.quiz-overlay,.quiz-modal,.feedback-card,.modal-header h2,.question-text,.option-text,.topic-card h3,.difficulty-card h3,.results-card,.score-number,.score-percentage,.stars-display h3{font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.quiz-overlay{position:fixed!important;top:0!important;left:0!important;width:100%!important;height:100%!important;background-size:cover!important;background-position:center!important;background-repeat:no-repeat!important;display:flex!important;align-items:center!important;justify-content:center!important;z-index:10000!important}.quiz-overlay--loading{background:#000000b8!important;backdrop-filter:blur(8px)!important;-webkit-backdrop-filter:blur(8px)!important}.quiz-modal{background:#13131f!important;backdrop-filter:blur(20px)!important;-webkit-backdrop-filter:blur(20px)!important;border:1px solid rgba(255,255,255,.1)!important;border-radius:20px!important;box-shadow:0 24px 80px #0009!important;max-width:90vw!important;max-height:90vh!important;overflow:hidden!important;animation:modalSlideIn .3s ease-out!important;color:#f0f0ff!important}.sb-book-loader-modal{display:flex;align-items:center;justify-content:center;padding:0!important;background:transparent!important;border:0!important;box-shadow:none!important}.sb-book-loader__card{background:#ffffff0a;border:1px solid rgba(255,255,255,.08);border-radius:28px;padding:46px 52px 38px;display:flex;flex-direction:column;align-items:center;gap:22px;width:min(520px,92vw);box-shadow:0 24px 64px #0000008c,inset 0 1px #ffffff0f;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.sb-book-loader__book{position:relative;width:110px;height:80px;perspective:600px}.sb-book-spine{position:absolute;left:50%;top:4px;transform:translate(-50%);width:6px;height:72px;border-radius:3px;background:linear-gradient(180deg,#a78bfa,#7c3aed,#a78bfa);box-shadow:0 0 12px #7c3aedb3,0 0 24px #7c3aed4d;z-index:2}.sb-book-page{position:absolute;top:4px;width:48px;height:72px;border-radius:3px;transform-style:preserve-3d}.sb-page-left{left:4px;transform-origin:right center;animation:sbFlipLeft 1.8s ease-in-out infinite}.sb-page-right{right:4px;transform-origin:left center;animation:sbFlipRight 1.8s ease-in-out infinite}.sb-page-face{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:3px;backface-visibility:hidden}.sb-page-left .sb-page-face{background:linear-gradient(160deg,#1e1b4b,#2e1b6e);border:1px solid rgba(124,58,237,.35);border-right:none}.sb-page-right .sb-page-face{background:linear-gradient(200deg,#1e1b4b,#2e1b6e);border:1px solid rgba(124,58,237,.35);border-left:none}.sb-page-lines{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.sb-page-lines span{display:block;position:absolute;left:8px;right:8px;height:2px;border-radius:2px;background:#a78bfa2e}.sb-page-lines span:nth-child(1){top:38px;width:70%}.sb-page-lines span:nth-child(2){top:48px}.sb-page-lines span:nth-child(3){top:58px;width:45%}.sb-page-face-shine{position:absolute;top:0;left:0;right:0;height:40%;border-radius:3px 3px 0 0;background:linear-gradient(180deg,rgba(255,255,255,.07),transparent);pointer-events:none}@keyframes sbFlipLeft{0%,to{transform:rotateY(0)}40%,60%{transform:rotateY(-28deg)}}@keyframes sbFlipRight{0%,to{transform:rotateY(0)}40%,60%{transform:rotateY(28deg)}}.sb-book-particle{position:absolute;font-size:11px;font-weight:900;color:#a78bfab3;pointer-events:none;animation:sbParticleFly 2.4s ease-out infinite}.sb-book-p1{left:20px;top:10px;animation-delay:0s}.sb-book-p2{left:55px;top:5px;animation-delay:.6s}.sb-book-p3{left:80px;top:15px;animation-delay:1.2s}.sb-book-p4{left:35px;top:0;animation-delay:1.8s}@keyframes sbParticleFly{0%{opacity:0;transform:translateY(0) scale(.5)}20%{opacity:.85}to{opacity:0;transform:translateY(-30px) scale(1.2)}}.sb-book-loader__text{text-align:center}.sb-book-loader__title{font-size:18px;font-weight:900;color:#e8f0ff;margin-bottom:6px;letter-spacing:-.2px}.sb-book-loader__sub{font-size:13px;font-weight:700;color:#b4c8ff73}.sb-book-loader__progress{width:100%;height:4px;border-radius:100px;background:#ffffff12;overflow:hidden}.sb-book-loader__progress-fill{height:100%;border-radius:100px;background:linear-gradient(90deg,#6366f1,#a855f7,#ec4899,#a855f7,#6366f1);background-size:200% 100%;animation:sbBookShimmer 2s linear infinite}@keyframes sbBookShimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@keyframes modalSlideIn{0%{opacity:0;transform:scale(.9) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-header{padding:20px 24px 14px;border-bottom:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:space-between;background:linear-gradient(135deg,#8b5cf633,#ec48991f)!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important}.modal-header h2{margin:0;font-size:1.3rem;font-weight:700;color:#f0f0ff}.close-btn{background:#ffffff12!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;border:1px solid rgba(255,255,255,.12)!important;border-radius:50%!important;width:36px;height:36px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1rem;color:#88a;transition:all .2s ease;box-shadow:none}.close-btn:hover{background:#ef444426!important;border-color:#ef44444d!important;color:#ef4444;transform:scale(1.05)}.modal-content{padding:24px 32px 32px;max-height:70vh;overflow-y:auto}@media (max-width: 768px){.quiz-modal.question-modal:not(.loading-modal):not(.streaming-builder-modal),.quiz-modal.mcq-ref-modal{width:calc(100vw - 16px)!important;max-width:calc(100vw - 16px)!important;max-height:90vh!important;height:auto!important;display:flex;flex-direction:column}.quiz-modal.question-modal .modal-content{flex:1;min-height:0;max-height:none;overflow-y:auto;padding-bottom:20px!important}.quiz-modal.question-modal:not(.quiz-modal--answered) .quiz-actions{position:sticky;bottom:0;padding:10px 0 0;margin-top:8px;background:linear-gradient(180deg,#13131f00,#13131feb 35%);border-top:1px solid rgba(255,255,255,.08)}.quiz-q-header-row{gap:6px 8px}.quiz-q-subject{max-width:100%;flex:1 1 140px}.quiz-q-header-spacer{display:none}.quiz-q-streak{margin-left:auto}}.topics-scroll-container{max-height:60vh;overflow-y:auto;padding-right:8px}.topics-list{display:flex;flex-direction:column;gap:16px}.topic-card{background:#ffffff0d!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;border:1px solid rgba(255,255,255,.1)!important;border-radius:14px;padding:20px;cursor:pointer;transition:all .2s ease;position:relative;box-shadow:none;color:#f0f0ff}.topic-card:hover{transform:translateY(-2px);background:#ffffff14!important;border-color:#8b5cf666!important;box-shadow:0 0 24px #8b5cf626}.topic-card.custom-topic{background:#10b9810f!important;border-color:#10b98140!important}.topic-card.default-topic{background:#8b5cf60f!important;border-color:#8b5cf633!important}.topic-icon{font-size:2.5rem;margin-bottom:12px;display:block}.topic-card h3{margin:0 0 8px;font-size:1.2rem;font-weight:600;color:#3a3a3a}.topic-card p{margin:0 0 12px;color:#666;font-size:.9rem}.topic-progress{display:flex;align-items:center;gap:12px;margin-top:12px}.progress-bar{flex:1;height:6px;background:#0000001a;border-radius:3px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,#4caf50,#8bc34a);border-radius:3px;transition:width .3s ease}.progress-text{font-size:.8rem;color:#666;font-weight:500}.topic-badge{position:absolute;top:12px;right:12px;background:#4caf50;color:#fff;padding:4px 8px;border-radius:12px;font-size:.7rem;font-weight:600}.topic-badge.custom{background:#ff9800}.topic-badge.new{background:#2196f3}.difficulties-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:20px}.difficulty-modal-fullbleed{border-radius:0}.difficulty-modal-content{padding-left:0!important;padding-right:0!important}.difficulty-carousel{display:flex;gap:0;overflow-x:auto;overflow-y:hidden;padding:0;margin:0;width:100%;scroll-snap-type:x mandatory;scrollbar-width:thin;-webkit-overflow-scrolling:touch}.difficulty-carousel::-webkit-scrollbar{height:6px}.difficulty-carousel::-webkit-scrollbar-track{background:#0000000d;border-radius:999px}.difficulty-carousel::-webkit-scrollbar-thumb{background:#f7c7dbb3;border-radius:999px}.difficulty-carousel{padding:0 16px 8px;gap:16px;scroll-padding:0 16px}.difficulty-carousel .difficulty-card{flex:0 0 auto;min-width:min(260px,78vw);width:min(260px,78vw);scroll-snap-align:center;border-radius:16px;box-shadow:0 2px 12px #0000000f}.carousel-hint{text-align:center;font-size:.85rem;color:#8a7f86;margin-top:12px;padding:0 24px;font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.quiz-overlay.diff-selection-overlay{display:flex!important;align-items:center!important;justify-content:center!important;padding:24px!important;background:#0d0d14f0!important;background-image:none!important}#difficulty-selection-root{--diff-bg: #0d0d14;--diff-surface: #13131f;--diff-card: #1a1a2e;--diff-border: rgba(255, 255, 255, .07);--diff-text: #e8e8f0;--diff-muted: #6b6b8a;--easy-color: #22c55e;--easy-glow: rgba(34, 197, 94, .35);--easy-bg: rgba(34, 197, 94, .08);--medium-color: #eab308;--medium-glow: rgba(234, 179, 8, .35);--medium-bg: rgba(234, 179, 8, .08);--hard-color: #f97316;--hard-glow: rgba(249, 115, 22, .35);--hard-bg: rgba(249, 115, 22, .08);--expert-color: #ef4444;--expert-glow: rgba(239, 68, 68, .35);--expert-bg: rgba(239, 68, 68, .08);--unreal-color: #a855f7;--unreal-glow: rgba(168, 85, 247, .45);--unreal-bg: rgba(168, 85, 247, .1);width:100%;max-width:1100px;max-height:90vh;overflow-y:auto;background:var(--diff-surface);border:1px solid var(--diff-border);border-radius:24px;box-shadow:0 32px 80px #0009;font-family:system-ui,-apple-system,sans-serif;color:var(--diff-text)}#difficulty-selection-root .modal-header{padding:24px 32px 20px;border-bottom:1px solid var(--diff-border);display:flex;align-items:center;justify-content:space-between;background:linear-gradient(135deg,rgba(168,85,247,.06) 0%,transparent 60%)}#difficulty-selection-root .header-left{display:flex;align-items:center;gap:16px;flex-wrap:wrap}#difficulty-selection-root .back-btn{display:flex;align-items:center;gap:6px;background:#ffffff0d;border:1px solid var(--diff-border);border-radius:10px;padding:8px 14px;font-size:13px;color:var(--diff-muted);cursor:pointer;transition:all .2s}#difficulty-selection-root .back-btn:hover{background:#ffffff17;color:var(--diff-text)}#difficulty-selection-root .header-title{font-size:22px;font-weight:800;letter-spacing:-.5px;margin:0}#difficulty-selection-root .close-btn{width:36px;height:36px;border-radius:10px;border:1px solid var(--diff-border);background:#ffffff0a;color:var(--diff-muted);font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}#difficulty-selection-root .close-btn:hover{background:#ef444426;color:#ef4444;border-color:#ef44444d}#difficulty-selection-root .topic-banner{margin:28px 32px 0;padding:18px 24px;background:var(--diff-card);border:1px solid var(--diff-border);border-radius:16px;display:flex;align-items:center;gap:16px}#difficulty-selection-root .topic-icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,#7c3aed,#a855f7);display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;box-shadow:0 0 20px #a855f766}#difficulty-selection-root .topic-info{flex:1;min-width:0}#difficulty-selection-root .topic-name{font-size:17px;font-weight:700;margin-bottom:4px}#difficulty-selection-root .topic-meta{font-size:13px;color:var(--diff-muted);display:flex;align-items:center;flex-wrap:wrap;gap:12px}#difficulty-selection-root .topic-meta span{display:flex;align-items:center;gap:4px}#difficulty-selection-root .topic-badge{padding:4px 10px;border-radius:20px;font-size:12px;font-weight:600;background:#a855f726;color:#a855f7;border:1px solid rgba(168,85,247,.25);flex-shrink:0}#difficulty-selection-root .section-label{margin:28px 32px 16px;font-size:12px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:var(--diff-muted)}#difficulty-selection-root .difficulty-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;padding:0 32px 32px}#difficulty-selection-root .diff-card{position:relative;background:var(--diff-card);border:1.5px solid var(--diff-border);border-radius:20px;padding:24px 16px 20px;cursor:pointer;transition:all .25s cubic-bezier(.34,1.56,.64,1);overflow:hidden;display:flex;flex-direction:column;align-items:center;text-align:center}#difficulty-selection-root .diff-card:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--c);opacity:0;transition:opacity .25s;border-radius:20px 20px 0 0}#difficulty-selection-root .diff-card:after{content:"";position:absolute;top:-40px;left:50%;transform:translate(-50%);width:120px;height:120px;border-radius:50%;background:var(--c);opacity:0;filter:blur(40px);transition:opacity .3s;pointer-events:none}#difficulty-selection-root .diff-card:hover{transform:translateY(-6px) scale(1.02);border-color:var(--c);box-shadow:0 12px 40px var(--glow),0 0 0 1px var(--c);background:var(--cbg)}#difficulty-selection-root .diff-card:hover:before{opacity:1}#difficulty-selection-root .diff-card:hover:after{opacity:.15}#difficulty-selection-root .diff-card.selected{transform:translateY(-4px) scale(1.02);border-color:var(--c);box-shadow:0 8px 32px var(--glow),0 0 0 1px var(--c);background:var(--cbg)}#difficulty-selection-root .diff-card.selected:before{opacity:1}#difficulty-selection-root .diff-card.selected:after{opacity:.12}#difficulty-selection-root .diff-orb{width:64px;height:64px;border-radius:50%;background:radial-gradient(circle at 35% 35%,rgba(255,255,255,.45),var(--c));box-shadow:0 0 0 8px var(--cbg),0 0 24px var(--glow);margin-bottom:16px;position:relative;z-index:1;transition:all .25s;display:flex;align-items:center;justify-content:center;font-size:26px}#difficulty-selection-root .diff-card:hover .diff-orb,#difficulty-selection-root .diff-card.selected .diff-orb{box-shadow:0 0 0 10px var(--cbg),0 0 40px var(--glow);transform:scale(1.1)}#difficulty-selection-root .diff-name{font-size:16px;font-weight:800;color:var(--diff-text);margin-bottom:6px;position:relative;z-index:1}#difficulty-selection-root .diff-desc{font-size:12px;color:var(--diff-muted);line-height:1.5;margin-bottom:16px;position:relative;z-index:1;min-height:36px}#difficulty-selection-root .diff-xp{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:20px;font-size:11px;font-weight:700;background:#ffffff0f;border:1px solid rgba(255,255,255,.1);color:var(--diff-muted);margin-bottom:16px;position:relative;z-index:1;transition:all .25s}#difficulty-selection-root .diff-card:hover .diff-xp,#difficulty-selection-root .diff-card.selected .diff-xp{background:var(--cbg);border-color:var(--c);color:var(--c)}#difficulty-selection-root .diff-reward-hint{font-size:10px;color:var(--diff-muted);margin:-8px 0 12px;position:relative;z-index:1}#difficulty-selection-root .diff-play-btn{width:100%;padding:11px 0;border-radius:12px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s;position:relative;z-index:1;background:#ffffff0f;color:var(--diff-muted);border:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;gap:6px}#difficulty-selection-root .diff-play-btn--done{cursor:default;opacity:.85;background:#22c55e1f;border-color:#22c55e59;color:#86efac}#difficulty-selection-root .diff-card:hover .diff-play-btn:not(.diff-play-btn--done),#difficulty-selection-root .diff-card.selected .diff-play-btn:not(.diff-play-btn--done){background:var(--c);color:#fff;border-color:var(--c);box-shadow:0 4px 16px var(--glow)}#difficulty-selection-root .diff-card:hover .diff-play-btn:not(.diff-play-btn--done):hover{filter:brightness(1.1);transform:scale(1.02)}#difficulty-selection-root .diff-easy{--c: var(--easy-color);--glow: var(--easy-glow);--cbg: var(--easy-bg)}#difficulty-selection-root .diff-medium{--c: var(--medium-color);--glow: var(--medium-glow);--cbg: var(--medium-bg)}#difficulty-selection-root .diff-hard{--c: var(--hard-color);--glow: var(--hard-glow);--cbg: var(--hard-bg)}#difficulty-selection-root .diff-expert{--c: var(--expert-color);--glow: var(--expert-glow);--cbg: var(--expert-bg)}#difficulty-selection-root .diff-unreal{--c: var(--unreal-color);--glow: var(--unreal-glow);--cbg: var(--unreal-bg);background:linear-gradient(var(--diff-card),var(--diff-card)) padding-box,linear-gradient(135deg,#a855f7,#ec4899,#6366f1,#a855f7) border-box;border:1.5px solid transparent;animation:diffBorderRotate 3s linear infinite}@keyframes diffBorderRotate{0%{background:linear-gradient(var(--diff-card),var(--diff-card)) padding-box,linear-gradient(0deg,#a855f7,#ec4899,#6366f1,#a855f7) border-box}25%{background:linear-gradient(var(--diff-card),var(--diff-card)) padding-box,linear-gradient(90deg,#a855f7,#ec4899,#6366f1,#a855f7) border-box}50%{background:linear-gradient(var(--diff-card),var(--diff-card)) padding-box,linear-gradient(180deg,#a855f7,#ec4899,#6366f1,#a855f7) border-box}75%{background:linear-gradient(var(--diff-card),var(--diff-card)) padding-box,linear-gradient(270deg,#a855f7,#ec4899,#6366f1,#a855f7) border-box}to{background:linear-gradient(var(--diff-card),var(--diff-card)) padding-box,linear-gradient(360deg,#a855f7,#ec4899,#6366f1,#a855f7) border-box}}#difficulty-selection-root .diff-unreal .diff-orb{background:radial-gradient(circle at 35% 35%,#c084fc,#7e22ce);animation:diffOrbPulse 2s ease-in-out infinite}@keyframes diffOrbPulse{0%,to{box-shadow:0 0 0 8px var(--cbg),0 0 24px var(--glow)}50%{box-shadow:0 0 0 12px var(--cbg),0 0 48px var(--glow)}}#difficulty-selection-root .diff-card.locked{cursor:not-allowed;pointer-events:none}#difficulty-selection-root .diff-card.is-recommended{border-color:#ec48998c!important;box-shadow:0 0 0 1px #ec489938,0 10px 34px #ec489924}#difficulty-selection-root .diff-reco-badge{position:absolute;top:10px;left:10px;z-index:5;padding:4px 8px;border-radius:999px;background:#ec489929;border:1px solid rgba(236,72,153,.3);color:#f9abd4;font-size:10px;font-weight:800;letter-spacing:.2px}#difficulty-selection-root .diff-card--completed{opacity:1;border-color:#22c55e73!important;box-shadow:0 0 0 1px #22c55e33,0 8px 28px #22c55e1f;background:#22c55e0f}#difficulty-selection-root .diff-card--completed:before{opacity:1;background:linear-gradient(90deg,#22c55e,#4ade80)}#difficulty-selection-root .diff-card--completed .selected-indicator{display:none!important}#difficulty-selection-root .diff-complete-badge{position:absolute;top:10px;left:10px;z-index:4;width:26px;height:26px;border-radius:50%;background:linear-gradient(145deg,#22c55e,#16a34a);color:#fff;font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 2px #0f172ae6,0 4px 14px #22c55e73}#difficulty-selection-root .best-score--done{color:#86efac!important;border-color:#22c55e59!important;background:#22c55e1f!important}#difficulty-selection-root .best-score{position:absolute;top:12px;right:12px;background:#ffffff0f;border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:3px 8px;font-size:10px;font-weight:600;color:var(--diff-muted);display:flex;align-items:center;gap:3px}#difficulty-selection-root .best-score.has-score{color:#eab308;border-color:#eab3084d;background:#eab30814}#difficulty-selection-root .footer-hint{padding:0 32px 28px;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--diff-muted)}#difficulty-selection-root .footer-hint span{display:flex;align-items:center;gap:4px}#difficulty-selection-root .footer-hint .dot{width:6px;height:6px;border-radius:50%;background:var(--diff-muted)}#difficulty-selection-root .selected-indicator{position:absolute;top:10px;left:10px;width:20px;height:20px;border-radius:50%;background:var(--c);display:flex;align-items:center;justify-content:center;font-size:11px;color:#fff;opacity:0;transform:scale(0);transition:all .2s cubic-bezier(.34,1.56,.64,1);z-index:2}#difficulty-selection-root .diff-card.selected .selected-indicator{opacity:1;transform:scale(1)}#difficulty-selection-root .ripple{position:absolute;border-radius:50%;background:#ffffff26;transform:scale(0);animation:diffRippleAnim .5s linear;pointer-events:none;z-index:10}@keyframes diffRippleAnim{to{transform:scale(4);opacity:0}}#difficulty-selection-root .diff-tooltip{position:absolute;bottom:calc(100% + 10px);left:50%;transform:translate(-50%) translateY(4px);background:#1e1e30;border:1px solid var(--diff-border);border-radius:10px;padding:8px 12px;font-size:11px;color:var(--diff-muted);white-space:nowrap;opacity:0;pointer-events:none;transition:all .2s;z-index:100;box-shadow:0 8px 24px #0006}#difficulty-selection-root .diff-tooltip:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:5px solid transparent;border-top-color:#1e1e30}#difficulty-selection-root .diff-card:hover .diff-tooltip{opacity:1;transform:translate(-50%) translateY(0)}@media (max-width: 900px){#difficulty-selection-root .difficulty-grid{grid-template-columns:repeat(3,1fr)}}@media (max-width: 600px){#difficulty-selection-root .difficulty-grid{grid-template-columns:1fr 1fr}#difficulty-selection-root .topic-banner{margin-left:16px;margin-right:16px;flex-wrap:wrap}#difficulty-selection-root .modal-header{padding:16px}#difficulty-selection-root .header-title{font-size:1.05rem}}.difficulty-selection-modal.difficulty-clay-modal{max-width:95%;width:-moz-fit-content;width:fit-content;border-radius:70px;background:#e3e9ff!important;padding:0;overflow:hidden;box-shadow:30px 30px 70px #0000001a,inset 10px 10px 20px #fffc,inset -10px -10px 20px #0000000d;animation:clayPop .5s cubic-bezier(.175,.885,.32,1.275)}.difficulty-clay-modal .modal-header{border-radius:0}.difficulty-clay-modal .modal-content.difficulty-modal-content{padding:48px 40px 40px!important}@keyframes clayPop{0%{opacity:0;transform:scale(.8) translateY(40px)}to{opacity:1;transform:scale(1) translateY(0)}}.difficulty-clay-modal .topic-info{margin-bottom:32px!important}.difficulty-clay-modal .topic-info h3,.difficulty-clay-modal .topic-info p{font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.difficulty-cards-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:25px;margin:0 auto;max-width:100%}.difficulty-clay-card{background:#ffffff59!important;backdrop-filter:blur(18px)!important;-webkit-backdrop-filter:blur(18px)!important;border:1px solid rgba(255,255,255,.4)!important;border-radius:40px;padding:28px 20px 24px;display:flex;flex-direction:column;align-items:center;text-align:center;min-width:0;box-shadow:20px 20px 40px #5d477740,inset 10px 10px 20px #ffffff4d,inset -10px -10px 20px #fff3;transition:transform .3s ease;cursor:pointer;font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.difficulty-clay-card:hover{transform:translateY(-12px)}.difficulty-clay-card.clay-card-no-play{cursor:not-allowed;opacity:.9}.difficulty-clay-card .clay-dot{width:50px;height:50px;border-radius:50%;margin-bottom:20px;flex-shrink:0;box-shadow:inset -4px -4px 8px #0000001a,inset 4px 4px 8px #fff6}.difficulty-clay-card .clay-dot-green{background:#56e393}.difficulty-clay-card .clay-dot-yellow{background:#fbd34d}.difficulty-clay-card .clay-dot-orange{background:#fb923c}.difficulty-clay-card .clay-dot-red{background:#f87171}.difficulty-clay-card .clay-dot-black{background:#1a1a1a}.difficulty-clay-card h3{margin:0 0 8px;font-size:1.05rem;font-weight:700;color:#3a3a3a;font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.difficulty-clay-card .clay-card-desc{margin:0 0 20px;font-size:.8rem;color:#666;line-height:1.4;font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.difficulty-play-btn{margin-top:auto;border:none;padding:14px 28px;border-radius:22px;background:linear-gradient(135deg,#f7c7db,#e8b5d1);color:#3a3a3a;font-weight:700;font-size:.95rem;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;box-shadow:4px 4px 8px #0000000d,inset -2px -2px 5px #0000000d;transition:all .2s;font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.difficulty-play-btn:hover{transform:scale(1.05);box-shadow:6px 6px 12px #f7c7db66}.difficulty-clay-card .difficulty-progress-line{font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.difficulty-clay-card .clay-completed-badge{margin-top:auto;padding:10px 20px;border-radius:22px;background:#4caf50;color:#fff;font-weight:700;font-size:.9rem;font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}@media (max-width: 1200px){.difficulty-cards-grid{grid-template-columns:repeat(3,1fr);justify-content:center}}@media (max-width: 768px){.difficulty-cards-grid{grid-template-columns:1fr}.difficulty-selection-modal.difficulty-clay-modal{border-radius:40px;padding:32px 20px}}.difficulty-card{background:#fffffff2;border-radius:16px;padding:20px;text-align:center;cursor:pointer;transition:all .25s ease;border:2px solid transparent;position:relative;min-height:200px;display:flex;flex-direction:column;justify-content:space-between}.difficulty-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px #0000001a}.difficulty-card.completed{background:linear-gradient(135deg,#4caf501f,#8bc34a1f);border-color:#4caf5059;box-shadow:inset 0 0 0 2px #4caf5026}.difficulty-card.attempted{border-color:#f7c7db66}.difficulty-card-footer{margin-top:12px;padding-top:10px;border-top:1px solid rgba(0,0,0,.06)}.difficulty-progress-line{font-size:.8rem;color:#555;margin:2px 0;line-height:1.35}.difficulty-progress-line.completed-line{color:#2e7d32;font-weight:600}.difficulty-progress-line.reward-line{color:#c2185b;font-weight:600}.difficulty-emoji{font-size:3rem;margin-bottom:12px;display:block}.difficulty-card h3{margin:0 0 8px;font-size:1.3rem;font-weight:600;color:#3a3a3a}.difficulty-card p{margin:0 0 16px;color:#666;font-size:.9rem}.completed-badge{background:#4caf50;color:#fff;padding:8px 16px;border-radius:20px;font-size:.8rem;font-weight:600}.play-badge{background:linear-gradient(135deg,#f7c7db,#e8b5d1);color:#3a3a3a;padding:8px 16px;border-radius:20px;font-size:.8rem;font-weight:600}.progress-info{display:flex;flex-direction:column;gap:8px;flex:1}.question-counter{font-size:1rem;font-weight:600;color:#3a3a3a}.difficulty-indicator{font-size:.9rem;color:#666}.question-card{background:#ffffff59!important;backdrop-filter:blur(18px)!important;-webkit-backdrop-filter:blur(18px)!important;border:1px solid rgba(255,255,255,.4)!important;border-radius:20px;padding:32px;margin:20px 0;box-shadow:20px 20px 40px #5d477740,inset 10px 10px 20px #ffffff4d,inset -10px -10px 20px #fff3}.question-text{font-size:1.4rem;font-weight:600;color:#3a3a3a;margin-bottom:32px;line-height:1.5}.options-container{display:flex;flex-direction:column;gap:12px;margin-bottom:32px}.option-btn{background:#ffffff0d!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;border:1.5px solid rgba(255,255,255,.1)!important;border-radius:14px;padding:16px 20px;cursor:pointer;transition:all .18s ease;display:flex;align-items:center;gap:14px;text-align:left;color:#f0f0ff;box-shadow:none}.option-btn:hover{background:#8b5cf61a!important;border-color:#8b5cf666!important;transform:translateY(-1px);box-shadow:none}.option-btn.selected{background:#8b5cf62e!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;border-color:#8b5cf6!important;color:#a78bfa;transform:none;box-shadow:0 0 16px #8b5cf633}.option-btn.correct{background:#10b98124!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;border-color:#10b981!important;color:#10b981;box-shadow:none}.option-btn.incorrect{background:#ef44441f!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;border-color:#ef4444!important;color:#ef4444;box-shadow:none}.option-btn:disabled{cursor:not-allowed}.option-letter{background:#ffffff14;border:1px solid rgba(255,255,255,.12);color:#88a;width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;flex-shrink:0}.option-btn.selected .option-letter{background:#8b5cf6;border-color:#8b5cf6;color:#fff}.option-btn.correct .option-letter{background:#10b981;border-color:#10b981;color:#fff}.option-btn.incorrect .option-letter{background:#ef4444;border-color:#ef4444;color:#fff}.option-text{flex:1;font-size:1rem;line-height:1.4}.matching-card .question-text{margin-bottom:12px}.matching-hint{margin:0 0 20px;font-size:.95rem;color:#666}.matching-columns{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}.matching-column{display:flex;flex-direction:column;gap:12px}.matching-btn{background:#fff6!important;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.4);border-radius:16px;padding:14px 18px;cursor:pointer;transition:all .2s ease;text-align:left;font-size:1rem;color:#3a3a3a;box-shadow:8px 8px 16px #5d477733,inset 4px 4px 8px #ffffff4d}.matching-btn:hover:not(.matched){background:#ffffff8c!important;transform:translate(4px)}.matching-btn.selected{background:#f7c7db80!important;border-color:#f7c7db99;box-shadow:0 0 0 2px #f7c7db66}.matching-btn.pair-c1{background:#7c83ff5c!important;border-color:#7c83ff9e!important}.matching-btn.pair-c2{background:#4caf5057!important;border-color:#4caf5094!important}.matching-btn.pair-c3{background:#ffa72657!important;border-color:#ffa7269e!important}.matching-btn.pair-c4{background:#e91e6347!important;border-color:#e91e638f!important}@media (max-width: 768px){.matching-columns{grid-template-columns:1fr}}.fill-blank-sentence{line-height:1.55}.fill-blank-inline-input{display:inline-block;width:min(140px,46vw);padding:10px 12px;margin:0 8px;border-radius:14px;border:1px solid rgba(255,255,255,.55);background:#ffffff59!important;color:#2b2140;box-shadow:8px 8px 16px #5d47771f,inset 4px 4px 8px #ffffff38;vertical-align:baseline}.fill-blank-inline-input:focus{outline:none;box-shadow:0 0 0 3px #7c83ff40,8px 8px 16px #5d47771f,inset 4px 4px 8px #ffffff38}.order-sentence{margin-top:10px;padding:12px 14px;border-radius:16px;border:1px solid rgba(255,255,255,.4);background:#ffffff2e;line-height:1.75}.order-blank{display:inline-flex;width:-moz-fit-content;width:fit-content;max-width:100%;min-width:2.75ch;min-height:1.35em;height:auto;padding:3px 6px;margin:0 3px;border-radius:999px;border:1px dashed rgba(247,199,219,.65);background:#f7c7db1a;vertical-align:middle;align-items:center;justify-content:center;box-sizing:border-box}.order-blank.order-blank--filled{padding:2px 4px;min-width:0}.order-blank.is-over{box-shadow:0 0 0 2px #7c83ff40}.order-blank .order-token{cursor:pointer;margin:0;padding:5px 12px;font-size:inherit;line-height:1.35;border-radius:999px;flex-shrink:0}.order-board{display:grid;grid-template-columns:1fr;gap:14px;margin-top:16px}.order-pool{min-height:64px;padding:12px;border-radius:18px;border:1px dashed rgba(255,255,255,.55);background:#ffffff38;display:flex;flex-wrap:wrap;gap:10px;align-items:center}.order-pool.is-over,.order-blank.is-over{box-shadow:0 0 0 2px #7c83ff40}.order-pool .order-token{border:0;border-radius:14px;padding:11px 14px;cursor:grab;-webkit-user-select:none;-moz-user-select:none;user-select:none;background:#ffffff73!important;border:1px solid rgba(255,255,255,.5);box-shadow:8px 8px 16px #5d47772e,inset 4px 4px 8px #ffffff47;transition:transform .12s ease,background .12s ease}.order-pool .order-token:hover{transform:translateY(-1px);background:#ffffff8c!important}.order-token.is-dragging{opacity:.6;transform:scale(.98)}.submit-btn{background:#4caf5099!important;backdrop-filter:blur(12px)!important;-webkit-backdrop-filter:blur(12px)!important;border:1px solid rgba(76,175,80,.5)!important;color:#fff;border-radius:16px;padding:16px 32px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .2s ease;width:100%;box-shadow:8px 8px 16px #4caf504d,inset 4px 4px 8px #fff3,inset -4px -4px 8px #0000001a}.submit-btn:hover:not(:disabled){transform:translateY(-2px);background:#4caf50b3!important;box-shadow:12px 12px 24px #4caf5066,inset 4px 4px 8px #ffffff4d,inset -4px -4px 8px #0000001a}.submit-btn:disabled{background:#ccc6!important;backdrop-filter:blur(8px)!important;-webkit-backdrop-filter:blur(8px)!important;cursor:not-allowed;transform:none;box-shadow:inset 4px 4px 8px #0000000d,inset -4px -4px 8px #fff3}.feedback-card{background:#ffffff59!important;backdrop-filter:blur(18px)!important;-webkit-backdrop-filter:blur(18px)!important;border:1px solid rgba(255,255,255,.4)!important;border-radius:28px;padding:32px;margin-top:24px;box-shadow:20px 20px 40px #5d477740,inset 10px 10px 20px #ffffff4d,inset -10px -10px 20px #fff3;position:relative;overflow:hidden}.feedback-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#4caf50,#8bc34a,#4caf50);border-radius:28px 28px 0 0}.feedback-card.incorrect:before{background:linear-gradient(90deg,#f44336,#e57373,#f44336)}.feedback-header{display:flex;align-items:center;gap:20px;margin-bottom:24px;padding:16px;border-radius:20px;position:relative}.feedback-header.correct{background:linear-gradient(135deg,#4caf501a,#8bc34a1a);border:2px solid rgba(76,175,80,.2);color:#2e7d32}.feedback-header.incorrect{background:linear-gradient(135deg,#f443361a,#e573731a);border:2px solid rgba(244,67,54,.2);color:#c62828}.feedback-icon{font-size:3.5rem;filter:drop-shadow(0 4px 8px rgba(0,0,0,.2));animation:bounceIn .6s ease-out}@keyframes bounceIn{0%{transform:scale(.3);opacity:0}50%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}.feedback-header h3{margin:0;font-size:2.2rem;font-weight:700;text-shadow:0 2px 4px rgba(0,0,0,.1);letter-spacing:-.5px}.feedback-explanation{background:linear-gradient(135deg,#fffc,#f8fafccc);border-radius:20px;padding:24px;margin-bottom:24px;border:1px solid rgba(0,0,0,.05);box-shadow:inset 0 2px 4px #00000005;position:relative}.feedback-explanation:before{content:"????";position:absolute;top:-8px;left:20px;background:#fff;padding:4px 8px;border-radius:12px;font-size:1.2rem;box-shadow:0 2px 4px #0000001a}.feedback-explanation p{margin:0;color:#2d3748;line-height:1.7;font-size:1.3rem;font-weight:500;padding-top:8px}.feedback-stats{text-align:center;margin-bottom:28px;padding:20px;background:linear-gradient(135deg,#2196f30d,#21cbf30d);border-radius:16px;border:1px solid rgba(33,150,243,.1)}.feedback-stats span{font-weight:700;color:#1976d2;font-size:1.4rem;text-shadow:0 1px 2px rgba(0,0,0,.1)}.next-btn{background:linear-gradient(135deg,#8b5cf6,#ec4899);color:#fff;border:none;border-radius:14px;padding:14px 28px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .2s ease;width:100%;letter-spacing:.02em;box-shadow:none;position:relative;overflow:hidden}.next-btn:before{display:none}.next-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px #8b5cf659;opacity:.9}.next-btn:active{transform:translateY(0);box-shadow:none}.results-card{background:#ffffff59!important;backdrop-filter:blur(18px)!important;-webkit-backdrop-filter:blur(18px)!important;border:1px solid rgba(255,255,255,.4)!important;border-radius:20px;padding:32px;text-align:center;box-shadow:20px 20px 40px #5d477740,inset 10px 10px 20px #ffffff4d,inset -10px -10px 20px #fff3}.results-modal{position:relative;overflow:hidden}.results-modal:before,.results-modal:after{content:"";position:absolute;width:200px;height:200px;border-radius:50%;filter:blur(0);opacity:.45;z-index:0}.results-modal:before{top:-60px;left:-60px;background:radial-gradient(circle,rgba(247,199,219,.8),transparent 70%)}.results-modal:after{bottom:-80px;right:-60px;background:radial-gradient(circle,rgba(124,131,255,.5),transparent 70%)}.results-card{position:relative;z-index:1;background:#ffffff59!important;backdrop-filter:blur(18px)!important;-webkit-backdrop-filter:blur(18px)!important;border:1px solid rgba(255,255,255,.4)!important;box-shadow:20px 20px 40px #5d477740,inset 10px 10px 20px #ffffff4d,inset -10px -10px 20px #fff3}.score-circle{box-shadow:0 12px 24px #f7c7db59}.stars-display{background:#f7c7db26;border-radius:16px;padding:16px}.weak-areas{background:linear-gradient(135deg,#fff0dcb3,#fffaf5e6);border:1px solid rgba(255,193,7,.2)}.score-display{margin-bottom:32px}.score-circle{width:120px;height:120px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;margin:0 auto 16px;position:relative}.score-circle.excellent{background:linear-gradient(135deg,#4caf50,#8bc34a)}.score-circle.good{background:linear-gradient(135deg,#ff9800,#ffc107)}.score-circle.needs-improvement{background:linear-gradient(135deg,#f44336,#e57373)}.score-number{font-size:2.5rem;font-weight:700;color:#fff}.score-total{font-size:1.2rem;color:#fffc}.score-percentage{font-size:1.5rem;font-weight:600;color:#3a3a3a;margin-bottom:8px}.difficulty-info{font-size:1rem;color:#666;margin-bottom:24px}.stars-display{margin-bottom:32px}.stars-display h3{margin:0 0 16px;color:#3a3a3a}.stars{font-size:2rem;margin-bottom:12px}.stars-display p{margin:0;color:#666;font-size:1rem}.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:32px}.stat-item{background:#0000000d;border-radius:12px;padding:16px;display:flex;justify-content:space-between;align-items:center}.stat-label{color:#666;font-size:.9rem}.stat-value{color:#3a3a3a;font-weight:600}.weak-areas{background:#ffc1071a;border-radius:12px;padding:20px;margin-bottom:32px;text-align:left}.weak-areas h4{margin:0 0 12px;color:#f57c00}.weak-areas ul{margin:0;padding-left:20px}.weak-areas li{color:#666;margin-bottom:4px}.results-actions{display:flex;gap:16px}.retry-btn{background:linear-gradient(135deg,#ff9800,#ffc107);color:#fff;border:none;border-radius:16px;padding:16px 24px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease;flex:1}.retry-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #ff98004d}.finish-btn{background:linear-gradient(135deg,#f7c7db,#e8b5d1);color:#3a3a3a;border:none;border-radius:16px;padding:16px 24px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease;flex:1}.finish-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #f7c7db4d}.loading-content{text-align:center;padding:40px}.loading-spinner{width:40px;height:40px;border:4px solid rgba(247,199,219,.3);border-top:4px solid #F7C7DB;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 20px}.loading-content h3{margin:0 0 8px;color:#3a3a3a}.loading-content p{margin:0;color:#666}.streaming-builder-modal .modal-header{background:linear-gradient(135deg,#f7c7db,#e8b5d1);border-radius:70px 70px 0 0}.question-counter-badge,.diff-badge{font-size:.82rem;font-weight:600;padding:4px 10px;border-radius:999px;background:#ffffff73;color:#3a3a3a;white-space:nowrap}.progress-bar-wrap{height:6px;border-radius:999px;background:#fff6;overflow:hidden}.progress-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#f7c7db,#c77dff)}.streaming-typing-area{background:#ffffff8c;border:1px solid rgba(255,255,255,.6);border-radius:18px;padding:18px 20px 14px;margin-bottom:16px;min-height:80px}.streaming-gen-label{font-size:.78rem;font-weight:600;color:#9b59b6;letter-spacing:.04em;margin-bottom:10px;text-transform:uppercase}.streaming-question-text{font-size:1.08rem;line-height:1.55;color:#2d2d2d;margin:0;min-height:1.6em;word-break:break-word}.streaming-cursor{display:inline-block;width:2px;height:1.1em;background:#c77dff;margin-left:1px;vertical-align:text-bottom;border-radius:2px;animation:blink-cursor .75s step-end infinite}@keyframes blink-cursor{0%,to{opacity:1}50%{opacity:0}}.streaming-options-skeleton{display:flex;flex-direction:column;gap:10px}.streaming-opt-skel{height:46px;border-radius:14px;background:#ffffff80;border:1px solid rgba(255,255,255,.55);animation:shimmer 1.4s ease-in-out infinite}.streaming-opt-skel:nth-child(2){animation-delay:.15s}.streaming-opt-skel:nth-child(3){animation-delay:.3s}.streaming-opt-skel:nth-child(4){animation-delay:.45s}@keyframes shimmer{0%,to{opacity:.55}50%{opacity:.9}}.loading-stream{margin:14px auto 0;max-width:min(560px,85vw);max-height:220px;overflow:auto;text-align:left;white-space:pre-wrap;word-break:break-word;padding:12px 14px;border-radius:14px;border:1px solid rgba(255,255,255,.5);background:#ffffff59;color:#2d3748;font-size:.9rem;line-height:1.35}.loading-skeleton-head{display:flex;gap:10px;justify-content:center;margin-bottom:12px}.loading-counter-skel,.loading-diff-skel{height:14px;border-radius:999px;background:#ffffff6b;border:1px solid rgba(255,255,255,.5);box-shadow:inset 4px 4px 8px #0000000d}.loading-counter-skel{width:110px}.loading-diff-skel{width:84px}.error-content{text-align:center;padding:40px}.error-icon{font-size:3rem;margin-bottom:20px}.error-content h3{margin:0 0 16px;color:#f44336}.error-content p{margin:0 0 24px;color:#666}.input-group{display:flex;flex-direction:column;gap:16px;margin-bottom:20px}.topic-input{background:#fffc;border:2px solid rgba(0,0,0,.1);border-radius:16px;padding:16px 20px;font-size:1rem;color:#3a3a3a;transition:all .2s ease}.topic-input:focus{outline:none;border-color:#f7c7db;background:#fffffff2}.topic-input::-moz-placeholder{color:#999}.topic-input::placeholder{color:#999}.start-btn{background:linear-gradient(135deg,#4caf50,#8bc34a);color:#fff;border:none;border-radius:16px;padding:16px 32px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .2s ease}.start-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #4caf504d}.help-text{text-align:center;color:#666;font-size:.9rem;margin:0}.topic-info{text-align:center;margin-bottom:24px;padding:20px;background:#f7c7db1a;border-radius:16px}.topic-info h3{margin:0 0 8px;color:#3a3a3a;font-size:1.3rem}.topic-info p{margin:0;color:#666}@media (max-width: 768px){.quiz-modal{max-width:95vw;margin:20px}.modal-header{padding:20px 24px 12px}.modal-header h2{font-size:1.3rem}.modal-content{padding:20px 24px 24px}.difficulties-grid{grid-template-columns:1fr}.difficulty-carousel .difficulty-card{min-width:min(260px,80vw);width:min(260px,80vw)}.question-text{font-size:1.2rem}.option-btn{padding:14px 16px}.results-actions{flex-direction:column}.stats-grid{grid-template-columns:1fr}}.answer-feedback-image{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);z-index:2000;max-width:200px;max-height:200px;border-radius:20px;box-shadow:0 20px 40px #0000004d;opacity:0;animation:fadeInOut 1.4s ease-in-out}@keyframes fadeInOut{0%{opacity:0;transform:translate(-50%,-50%) scale(.8)}20%{opacity:1;transform:translate(-50%,-50%) scale(1)}80%{opacity:1;transform:translate(-50%,-50%) scale(1)}to{opacity:0;transform:translate(-50%,-50%) scale(.8)}}.topics-scroll-container::-webkit-scrollbar{width:6px}.topics-scroll-container::-webkit-scrollbar-track{background:#0000001a;border-radius:3px}.topics-scroll-container::-webkit-scrollbar-thumb{background:#f7c7db80;border-radius:3px}.topics-scroll-container::-webkit-scrollbar-thumb:hover{background:#f7c7dbb3}.quiz-audio-player{position:fixed;bottom:20px;right:20px;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;padding:12px 16px;box-shadow:0 8px 24px #00000026;z-index:10001;min-width:280px;border:1px solid rgba(247,199,219,.3)}.audio-player-header{margin-bottom:10px}.audio-player-title{font-size:.9rem;font-weight:700;color:#3a3a3a;display:block;text-align:center}.audio-player-controls{display:flex;align-items:center;gap:8px;justify-content:center}.audio-btn{background:linear-gradient(135deg,#f7c7db,#e8b5d1);border:none;border-radius:8px;width:36px;height:36px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1rem;transition:all .2s ease;color:#3a3a3a;box-shadow:0 2px 8px #f7c7db4d}.audio-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #f7c7db80}.audio-btn:active{transform:translateY(0)}.audio-volume-control{display:flex;align-items:center;gap:6px;margin-left:8px}.audio-volume-control input[type=range]{width:80px;height:4px;background:#f7c7db4d;border-radius:2px;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.audio-volume-control input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;background:linear-gradient(135deg,#f7c7db,#e8b5d1);border-radius:50%;cursor:pointer;box-shadow:0 2px 4px #0003}.audio-volume-control input[type=range]::-moz-range-thumb{width:14px;height:14px;background:linear-gradient(135deg,#f7c7db,#e8b5d1);border-radius:50%;cursor:pointer;border:none;box-shadow:0 2px 4px #0003}.audio-volume-icon{font-size:1rem;color:#3a3a3a}@media (max-width: 768px){.quiz-audio-player{bottom:15px;right:15px;min-width:240px;padding:10px 12px}.audio-btn{width:32px;height:32px;font-size:.9rem}.audio-volume-control input[type=range]{width:60px}}.difficulty-clay-modal .modal-header,[class*=difficulty] .modal-header{background:linear-gradient(135deg,#8b5cf638,#ec489924)!important}.difficulty-card{background:#ffffff0d!important;border:1.5px solid rgba(255,255,255,.1)!important;color:#f0f0ff!important;box-shadow:none!important}.difficulty-card:hover{background:#ffffff14!important;border-color:#8b5cf666!important;box-shadow:0 0 24px #8b5cf626!important;transform:translateY(-2px)!important}.difficulty-card h3,.difficulty-card p{color:inherit!important}.difficulty-card.completed{background:#10b9811a!important;border-color:#10b9814d!important}.difficulty-card.attempted{background:#f59e0b14!important;border-color:#f59e0b40!important}[style*=F7C7DB],[style*=E8B5D1]{background:linear-gradient(135deg,#8b5cf638,#ec489924)!important;color:#f0f0ff!important}.matching-btn{background:#ffffff0d!important;border:1.5px solid rgba(255,255,255,.1)!important;color:#f0f0ff!important;box-shadow:none!important}.matching-btn:hover:not(.matched){background:#8b5cf61a!important;border-color:#8b5cf659!important}.matching-btn.selected{background:#8b5cf62e!important;border-color:#8b5cf6!important;color:#a78bfa!important;box-shadow:0 0 16px #8b5cf633!important}.matching-btn.pair-c1{background:#8b5cf62e!important;border-color:#8b5cf6!important;color:#a78bfa!important}.results-card{background:#ffffff0a!important;backdrop-filter:blur(20px)!important;-webkit-backdrop-filter:blur(20px)!important;border:1px solid rgba(255,255,255,.1)!important;box-shadow:none!important;color:#f0f0ff!important}.stars-display{background:#f59e0b1a!important;border:1px solid rgba(245,158,11,.2)!important;border-radius:14px!important}.weak-areas{background:#f59e0b14!important;border:1px solid rgba(245,158,11,.2)!important}.score-circle{box-shadow:none!important}.fill-blank-sentence{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.09)!important;color:#f0f0ff!important;border-radius:14px!important}.fill-blank-inline-input{background:#8b5cf61a!important;border:2px solid rgba(139,92,246,.4)!important;color:#f0f0ff!important;border-radius:10px!important}.fill-blank-inline-input::-moz-placeholder{color:#56a!important}.fill-blank-inline-input::placeholder{color:#56a!important}.order-blank{background:#8b5cf614!important;border:1px dashed rgba(167,139,250,.55)!important;color:#a78bfa!important;border-radius:999px!important}.order-blank.order-blank--filled{background:#8b5cf629!important;border-style:solid!important;border-color:#a78bfad9!important;padding:2px 4px!important;min-width:0!important}.order-pool .order-token{background:#ffffff12!important;border:1px solid rgba(255,255,255,.14)!important;color:#f0f0ff!important;border-radius:12px!important;box-shadow:none!important}.order-pool .order-token:hover{border-color:#8b5cf6!important;background:#8b5cf61f!important;color:#a78bfa!important}.order-blank .order-token{background:#8b5cf638!important;border:1px solid rgba(167,139,250,.65)!important;color:#ede9fe!important;border-radius:999px!important;box-shadow:none!important;padding:5px 12px!important;font-weight:600!important}.order-token.used{opacity:.28!important}.order-sentence{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.09)!important;color:#f0f0ff!important;border-radius:14px!important}.quiz-progress-bar,.q-progress-track,.progress-track{background:#ffffff12!important}.quiz-progress-fill,.q-progress-fill,.progress-fill{background:linear-gradient(90deg,#8b5cf6,#ec4899)!important;box-shadow:0 0 10px #8b5cf680!important}.score-correct{color:#10b981!important}.score-wrong{color:#ef4444!important}.feedback-card.correct{background:#10b98114!important;border:1px solid rgba(16,185,129,.25)!important}.feedback-header.correct{background:#10b98126!important;color:#10b981!important}.feedback-header.incorrect{background:#ef44441f!important;color:#ef4444!important}.feedback-explanation p{color:#88a!important}.check-btn,.submit-btn,.start-btn,.confirm-btn,.retry-btn{background:linear-gradient(135deg,#8b5cf6,#ec4899)!important;color:#fff!important;border:none!important;border-radius:14px!important;font-weight:700!important;box-shadow:none!important}.check-btn:hover,.submit-btn:hover{opacity:.87!important;transform:translateY(-2px)!important;box-shadow:0 8px 24px #8b5cf659!important}.quiz-audio-player{background:#13131fe6!important;border:1px solid rgba(255,255,255,.1)!important;color:#f0f0ff!important;box-shadow:0 8px 32px #00000080!important}.audio-btn{background:#ffffff14!important;border:1px solid rgba(255,255,255,.12)!important;color:#f0f0ff!important;box-shadow:none!important}.audio-btn:hover{background:#8b5cf633!important}.audio-volume-icon{color:#88a!important}.streaming-builder-modal{background:#13131f!important;border-color:#ffffff1a!important}.streaming-builder-modal .modal-header{background:linear-gradient(135deg,#8b5cf638,#ec489924)!important}.streaming-typing-area{background:#ffffff0a!important;border-color:#ffffff17!important}.question-counter-badge,.diff-badge{background:#ffffff12!important;color:#f0f0ff!important}.progress-bar-wrap{background:#ffffff12!important}.progress-bar-fill{background:linear-gradient(90deg,#8b5cf6,#ec4899)!important}.loading-modal{background:#13131f!important;border-color:#ffffff1a!important}.loading-modal h3,.loading-content h3{color:#f0f0ff!important}.loading-modal p,.loading-content p{color:#88a!important}.loading-counter-skel,.loading-diff-skel{background:#ffffff14!important;border-color:#ffffff1a!important}@media (max-width: 768px){.quiz-modal.question-modal .quiz-actions{background:linear-gradient(180deg,#13131f00,#13131ff2 40%)!important;border-top:1px solid rgba(255,255,255,.08)!important;backdrop-filter:blur(12px)!important;-webkit-backdrop-filter:blur(12px)!important}}.quiz-modal.mcq-ref-modal{width:min(860px,calc(100vw - 20px))!important;max-width:min(860px,calc(100vw - 20px))!important;max-height:min(920px,94vh)!important;background:#080c1ce6!important;border:1px solid rgba(255,255,255,.1)!important;border-radius:18px!important;box-shadow:0 24px 60px #00000073!important;display:flex!important;flex-direction:column!important}.quiz-q-header{flex-shrink:0;padding:12px 18px 10px;border-bottom:1px solid rgba(255,255,255,.08);font-family:system-ui,-apple-system,sans-serif}.quiz-q-header-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;margin-bottom:10px}.quiz-q-header-spacer{flex:1 1 12px;min-width:4px}.quiz-q-counter{font-size:.86rem;font-weight:700;color:#c8d3fb;white-space:nowrap}.quiz-q-diff{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:.75rem;font-weight:600;color:#d8e2ff;border:1px solid rgba(255,255,255,.12);background:#ffffff0d;white-space:nowrap}.quiz-q-diff-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.quiz-q-diff--easy .quiz-q-diff-dot{background:#22c55e;box-shadow:0 0 8px #22c55e73}.quiz-q-diff--medium .quiz-q-diff-dot{background:#eab308;box-shadow:0 0 8px #eab30866}.quiz-q-diff--hard .quiz-q-diff-dot{background:#f97316;box-shadow:0 0 8px #f9731666}.quiz-q-diff--expert .quiz-q-diff-dot{background:#ef4444;box-shadow:0 0 8px #ef444466}.quiz-q-diff--unreal .quiz-q-diff-dot{background:#a855f7;box-shadow:0 0 8px #a855f773}.quiz-q-subject{display:inline-flex;align-items:center;gap:6px;max-width:min(200px,38vw);padding:4px 10px;border-radius:999px;font-size:.72rem;font-weight:600;color:#b8c5ff;border:1px solid rgba(96,165,250,.25);background:#3b82f61a;overflow:hidden}.quiz-q-subject-text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.quiz-q-streak{display:inline-flex;align-items:center;padding:5px 11px;border-radius:999px;font-size:.75rem;font-weight:700;color:#ffbf6e;border:1px solid rgba(245,158,11,.35);background:#f59e0b1f;white-space:nowrap}.quiz-q-header .close-btn{flex-shrink:0;margin-left:2px}.quiz-q-progress-line{height:6px;border-radius:999px;overflow:hidden;background:#ffffff14}.quiz-q-progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#8b5cf6,#ec4899);transition:width .25s ease}.quiz-q-progress-meta{display:flex;align-items:center;justify-content:space-between;margin-top:8px;font-size:.78rem;font-weight:600;color:#8b92b8}.quiz-q-progress-xp{color:#f6ac62}.order-drag-hint{margin:0 0 4px;font-size:.72rem;font-weight:800;letter-spacing:.06em;color:#a78bfa}.order-drag-accent{color:#8b5cf6;margin-right:6px}.order-dnd-subhint{margin-top:0!important}.order-pool-label{margin:14px 0 8px;font-size:.68rem;font-weight:800;letter-spacing:.12em;color:#6b7288}.mcq-ref-modal .modal-content{padding:12px 22px 22px!important}.mcq-question-card{border:1px solid rgba(255,255,255,.1)!important;border-radius:16px!important;background:#0d1226b8!important}.mcq-options{display:grid!important;grid-template-columns:1fr 1fr!important;gap:14px!important}.mcq-ref-modal .option-btn{min-height:88px;padding:14px 16px!important;border-radius:14px!important;background:#ffffff08!important;border:1px solid rgba(255,255,255,.12)!important;align-items:flex-start!important}.mcq-ref-modal .option-btn.selected{background:#8b5cf63d!important;border-color:#a78bfabf!important}.mcq-ref-modal .option-letter{width:34px;height:34px;min-width:34px;border-radius:10px;border:1px solid rgba(255,255,255,.17);background:#ffffff08;font-size:.9rem!important}.mcq-ref-modal .option-text{font-size:1.05rem!important;line-height:1.5!important;color:#e8e8f0!important;font-weight:500!important}.mcq-actions{justify-content:flex-end!important;margin-top:14px}.mcq-actions .check-btn{min-width:170px;border-radius:12px!important;background:linear-gradient(135deg,#8b5cf6,#ec4899)!important;color:#fff!important}.quiz-overlay .quiz-modal.question-modal:not(.loading-modal):not(.streaming-builder-modal){width:min(860px,calc(100vw - 20px))!important;max-width:min(860px,calc(100vw - 20px))!important;max-height:min(920px,94vh)!important;display:flex!important;flex-direction:column!important;margin:0 auto!important}.quiz-overlay .quiz-modal.question-modal.matching-modal{width:min(920px,calc(100vw - 16px))!important;max-width:min(920px,calc(100vw - 16px))!important;max-height:min(940px,95vh)!important}.quiz-modal.question-modal.matching-modal .matching-columns{grid-template-columns:minmax(200px,.95fr) minmax(240px,1.15fr);gap:20px 28px}.quiz-modal.question-modal.matching-modal .matching-btn{min-height:48px;padding:14px 16px!important;font-size:1.02rem!important;line-height:1.45!important}.quiz-modal.question-modal.matching-modal .matching-right .matching-btn{min-height:52px}@media (max-width: 768px){.quiz-modal.question-modal.matching-modal .matching-columns{grid-template-columns:1fr}}@keyframes quiz-stagger-fade-up{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}.quiz-stagger-question{opacity:0;animation:quiz-stagger-fade-up .52s cubic-bezier(.22,1,.36,1) forwards;animation-delay:.12s}.quiz-stagger-sentence-block{opacity:0;animation:quiz-stagger-fade-up .48s cubic-bezier(.22,1,.36,1) forwards;animation-delay:.32s}.quiz-stagger-opt{opacity:0;animation:quiz-stagger-fade-up .42s cubic-bezier(.22,1,.36,1) forwards;animation-delay:calc(var(--quiz-stagger-opt-base, .46s) + var(--stagger-i, 0) * 78ms)}.quiz-stagger-actions{opacity:0;animation:quiz-stagger-fade-up .45s cubic-bezier(.22,1,.36,1) forwards;animation-delay:calc(var(--quiz-stagger-opt-base, .46s) + var(--quiz-opt-count, 0) * 78ms + .12s)}.fill-blank-card .quiz-stagger-actions{animation-delay:.66s!important}@media (prefers-reduced-motion: reduce){.quiz-stagger-question,.quiz-stagger-sentence-block,.quiz-stagger-opt,.quiz-stagger-actions{animation:none!important;opacity:1!important;transform:none!important}}.quiz-modal.question-modal:not(.streaming-builder-modal) .modal-content{padding:16px 22px 20px!important;flex:1;min-height:0;overflow-y:auto!important;max-height:none!important}.quiz-modal.question-modal:not(.streaming-builder-modal) .question-card{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.12)!important;border-radius:14px!important;padding:16px 14px!important;margin:10px 0!important;box-shadow:none!important;backdrop-filter:blur(12px)!important;-webkit-backdrop-filter:blur(12px)!important}.quiz-modal.question-modal:not(.streaming-builder-modal) .question-text,.quiz-modal.question-modal:not(.streaming-builder-modal) .fill-blank-sentence{color:#e8e8f0!important;font-size:1.08rem!important;line-height:1.72!important;margin-bottom:16px!important;font-weight:600!important}.quiz-modal.question-modal:not(.streaming-builder-modal) .mcq-options,.quiz-modal.question-modal:not(.streaming-builder-modal) .options-container.mcq-options{gap:14px!important}.quiz-modal.question-modal:not(.streaming-builder-modal) .option-btn{min-height:88px!important;padding:14px 16px!important;align-items:flex-start!important}.quiz-modal.question-modal:not(.streaming-builder-modal) .option-letter{width:34px!important;height:34px!important;min-width:34px!important;font-size:.9rem!important}.quiz-modal.question-modal:not(.streaming-builder-modal) .option-text{font-size:1.05rem!important;line-height:1.5!important;color:#e8e8f0!important;font-weight:500!important}.quiz-modal.question-modal:not(.streaming-builder-modal) .fill-blank-inline-input{display:inline-block;width:auto;min-width:3.5ch;max-width:min(100%,42ch);margin:0 4px!important;vertical-align:middle;background:#8b5cf624!important;border:1px solid rgba(167,139,250,.55)!important;color:#ede9fe!important;border-radius:999px!important;padding:4px 12px!important;font-size:inherit!important;font-weight:600!important;line-height:1.35!important;field-sizing:content}@supports not (field-sizing: content){.quiz-modal.question-modal:not(.streaming-builder-modal) .fill-blank-inline-input{min-width:6ch}}.quiz-modal.question-modal:not(.streaming-builder-modal) .fill-blank-inline-input.is-readonly{opacity:.85;cursor:default}.quiz-modal--answered .quiz-actions{display:none!important}.quiz-feedback-block{margin-top:12px;padding:14px 14px 16px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:#0c1020eb;font-family:system-ui,-apple-system,sans-serif;text-align:left}.quiz-feedback-block.is-correct{border-color:#22c55e59;box-shadow:inset 3px 0 #22c55e}.quiz-feedback-block.is-wrong{border-color:#ef444459;box-shadow:inset 3px 0 #ef4444}.quiz-feedback-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}.quiz-feedback-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:1.2rem;font-weight:800;flex-shrink:0}.quiz-feedback-block.is-correct .quiz-feedback-icon{background:#22c55e2e;color:#4ade80}.quiz-feedback-block.is-wrong .quiz-feedback-icon{background:#ef444429;color:#fca5a5}.quiz-feedback-headlines{min-width:0}.quiz-feedback-title{margin:0;font-size:1.05rem;font-weight:700;color:#f1f5ff;letter-spacing:-.02em}.quiz-feedback-sub{margin:3px 0 0;font-size:.78rem;color:#94a3b8}.quiz-feedback-text{margin:0 0 12px;font-size:.88rem;line-height:1.55;color:#c4cffc}.quiz-feedback-meta{font-size:.78rem;color:#8b9cc9;margin-bottom:12px}.quiz-feedback-meta-item strong{color:#e2e8ff;font-weight:700}.quiz-feedback-block .quiz-feedback-next,.quiz-feedback-block .next-btn{width:100%;margin-top:2px;border-radius:12px!important;padding:12px 16px!important;font-size:.92rem!important;font-weight:700!important}:root{--bg: #0d0d14;--bg2: #13131f;--bg3: #1a1a2e;--ink: #f0f0ff;--muted: #8888aa;--line: rgba(255,255,255,.08);--card: rgba(255,255,255,.05);--primary: #8b5cf6;--primary-light: #a78bfa;--accent: #06b6d4;--pink: #ec4899;--yellow: #f59e0b;--green: #10b981;--red: #ef4444;--orange: #f97316;--shadow: 0 8px 32px rgba(0,0,0,.45);--radius: 14px;--grad1: linear-gradient(135deg, #8b5cf6, #ec4899);--grad2: linear-gradient(135deg, #06b6d4, #8b5cf6);--glass-bg: rgba(255,255,255,.05);--glass-bg-light: rgba(255,255,255,.08);--glass-border: rgba(255,255,255,.09);--glass-shadow: rgba(0,0,0,.45);--glass-sun-light: rgba(139,92,246,.12);--glass-blur: blur(20px);--bottom-nav-h: 74px}.sb-mixer-card .sb-mixer{display:grid;gap:12px;margin-top:0;width:100%}.sb-mix-row{display:grid;grid-template-columns:minmax(200px,34%) minmax(0,1fr) 88px;gap:12px;align-items:center;width:100%}.sb-mix-label{font-weight:900;color:#f0f0ff;text-align:left;line-height:1.25;padding-right:4px}.sb-mix-range{width:100%;min-width:0}.sb-mix-num{width:88px;max-width:100%;box-sizing:border-box;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:#0d0d1459;color:#f0f0ff;padding:10px 12px;font-weight:900}.sb-mixer-save-wrap{margin-top:16px;display:flex;justify-content:flex-start}.sb-mixer-save-wrap .btn{min-width:160px}.sb-mixer-total{margin-top:12px;display:flex;justify-content:space-between;align-items:center;padding:10px 12px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:#ffffff08;font-weight:900}@media (max-width: 520px){.sb-mix-row{grid-template-columns:1fr;gap:8px}.sb-mix-num{width:100%}}.sb-quiz-summary-modal{width:min(720px,96vw);max-width:min(720px,96vw)}.sb-quiz-summary-modal .sb-modal-body{width:100%;box-sizing:border-box}.sb-quiz-summary-mixer{width:100%}.sb-quiz-summary-mixer .sb-mix-row{grid-template-columns:minmax(200px,34%) minmax(0,1fr) 88px}.sb-quiz-instructions-block{margin-top:16px;width:100%}.sb-quiz-instructions-label{font-weight:900;margin-bottom:8px;color:#f0f0ff}textarea.sb-quiz-specific-instructions{resize:none!important;width:100%;min-height:104px;max-height:104px;box-sizing:border-box;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:#0d0d1459;color:#f0f0ff;padding:12px 14px;font-weight:700;line-height:1.45}.sb-quiz-instructions-hint{margin-top:8px}@media (max-width: 520px){.sb-quiz-summary-mixer .sb-mix-row{grid-template-columns:1fr}}.sb-hidden-topics-list{display:grid;gap:10px;max-height:min(360px,50vh);overflow-y:auto}.sb-hidden-topic-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;border:1px solid rgba(255,255,255,.1);background:#ffffff08}.sb-hidden-topic-title{font-weight:800;color:#f0f0ff;text-align:left;flex:1;min-width:0}.avatar-placeholder{position:relative;width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--primary));display:flex;align-items:center;justify-content:center;overflow:hidden;border:3px solid var(--card);box-shadow:var(--shadow)}.avatar-placeholder .avatar-icon{font-size:24px;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.2)}#catalog-page .avatar-placeholder{background:transparent;border:0;box-shadow:none}#catalog-page .avatar-placeholder .avatar-icon{font-size:28px;text-shadow:none}.sb-catalog-preview__cols{display:grid;grid-template-columns:1fr 1fr;gap:12px}.sb-catalog-preview__head{color:var(--muted);font-weight:900;margin-bottom:8px}.sb-catalog-preview__chapters,.sb-catalog-preview__topics{border:1px solid rgba(255,255,255,.1);background:#ffffff08;border-radius:14px;padding:10px;min-height:220px}.sb-catalog-chapter{width:100%;text-align:left;padding:10px 12px;border-radius:12px;border:1px solid rgba(255,255,255,.08);background:#0d0d1440;color:#f0f0ff;cursor:pointer;margin-bottom:8px}.sb-catalog-chapter.is-active{border-color:#a78bfa73;background:#8b5cf61f}.sb-catalog-chapter__row{display:flex;justify-content:space-between;align-items:center}.sb-catalog-chapter__num{color:var(--muted);font-weight:900;font-size:.82rem}.sb-catalog-chapter__title{font-weight:900}.sb-catalog-topic{padding:10px 12px;border-radius:12px;border:1px solid rgba(255,255,255,.08);background:#0d0d1438;margin-bottom:8px}.sb-catalog-topic__num{color:var(--muted);font-weight:900;font-size:.82rem}.sb-catalog-topic__title{font-weight:900;color:#fff}.sb-catalog-topic__desc{color:#f0f0ffd1;font-weight:700;margin-top:4px}@media (max-width: 900px){.sb-catalog-preview__cols{grid-template-columns:1fr}}.avatar-upload-btn{position:absolute;bottom:-2px;right:-2px;width:24px;height:24px;border-radius:50%;background:var(--primary);border:2px solid var(--card);display:flex;align-items:center;justify-content:center;font-size:12px;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 8px #00000026}.avatar-upload-btn:hover{transform:scale(1.1);background:var(--accent)}.avatar-upload-btn:active{transform:scale(.95)}.user .avatar{width:50px;height:50px;border-radius:50%;-o-object-fit:cover;object-fit:cover;border:2px solid var(--line);box-shadow:var(--shadow)}.user-avatar{width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--primary));display:flex;align-items:center;justify-content:center;overflow:hidden;border:2px solid var(--line);box-shadow:var(--shadow)}.user-avatar .avatar-face{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background-size:cover;background-position:center;background-repeat:no-repeat}.recommendation-btn.quiz-btn{background:linear-gradient(135deg,#ff6b6b,#ff8e8e);color:#fff;border:none;box-shadow:0 4px 15px #ff6b6b4d}.recommendation-btn.quiz-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #ff6b6b66}.recommendation-btn.quiz-btn .btn-icon{font-size:1.2em}*{box-sizing:border-box}html,body{height:100%}html{background:#0d0d14!important}body{margin:0;background:#0d0d14!important;background-image:none!important;background-color:#0d0d14!important;color:var(--ink);font-family:Comfortaa,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif;position:relative}.sb-app-loader{position:fixed;top:0;right:0;bottom:0;left:0;display:none;align-items:center;justify-content:center;background:#0d0d14eb;z-index:9999}.sb-orbit-loader{display:flex;align-items:center;justify-content:center;width:100%}.sb-orbit-card{background:#ffffff0a;border:1px solid rgba(255,255,255,.08);border-radius:28px;padding:48px 52px 40px;display:flex;flex-direction:column;align-items:center;gap:22px;min-width:320px;width:min(520px,92vw);box-shadow:0 24px 64px #00000080,inset 0 1px #ffffff0f;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.sb-orbit-system{position:relative;width:130px;height:130px}.sb-orbit-core{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:30px;height:30px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#c4b5fd,#7c3aed 55%,#4f46e5);box-shadow:0 0 14px #7c3aede6,0 0 32px #7c3aed73,0 0 60px #7c3aed33;animation:sbOrbitCorePulse 2.2s ease-in-out infinite}@keyframes sbOrbitCorePulse{0%,to{transform:translate(-50%,-50%) scale(1);box-shadow:0 0 14px #7c3aede6,0 0 32px #7c3aed73}50%{transform:translate(-50%,-50%) scale(1.18);box-shadow:0 0 22px #a78bfa,0 0 48px #a78bfa8c,0 0 80px #a78bfa33}}.sb-orbit-ring{position:absolute;top:50%;left:50%;border-radius:50%;border:1px solid transparent;transform-origin:center}.sb-orbit-ring:after{content:"";position:absolute;border-radius:50%;top:0;left:50%;transform:translate(-50%,-50%)}.sb-orbit-1{width:62px;height:62px;margin:-31px 0 0 -31px;border-color:#63b3ed33;animation:sbOrbitSpin 1.5s linear infinite}.sb-orbit-1:after{width:13px;height:13px;background:radial-gradient(circle at 35% 30%,#93c5fd,#3b82f6 60%,#1d4ed8);box-shadow:0 0 10px #3b82f6,0 0 20px #3b82f680}.sb-orbit-2{width:94px;height:94px;margin:-47px 0 0 -47px;border-color:#a855f72e;animation:sbOrbitSpin 2.4s linear infinite reverse}.sb-orbit-2:after{width:11px;height:11px;background:radial-gradient(circle at 35% 30%,#e9d5ff,#a855f7 60%,#7e22ce);box-shadow:0 0 10px #a855f7,0 0 20px #a855f780}.sb-orbit-3{width:128px;height:128px;margin:-64px 0 0 -64px;border-color:#ec489926;animation:sbOrbitSpin 3.5s linear infinite}.sb-orbit-3:after{width:9px;height:9px;background:radial-gradient(circle at 35% 30%,#fbcfe8,#ec4899 60%,#be185d);box-shadow:0 0 8px #ec4899,0 0 18px #ec489980}@keyframes sbOrbitSpin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.sb-orbit-text{text-align:center}.sb-orbit-title{font-size:18px;font-weight:900;color:#e8f0ff;margin-bottom:6px;letter-spacing:-.2px}.sb-orbit-subtitle{font-size:13px;font-weight:700;color:#b4c8ff73}.sb-orbit-dots span{display:inline-block;animation:sbOrbitDot 1.4s ease-in-out infinite}.sb-orbit-dots span:nth-child(2){animation-delay:.2s}.sb-orbit-dots span:nth-child(3){animation-delay:.4s}@keyframes sbOrbitDot{0%,80%,to{opacity:.3;transform:translateY(0)}40%{opacity:1;transform:translateY(-4px)}}.sb-orbit-progress{width:100%;height:4px;border-radius:100px;background:#ffffff12;overflow:hidden}.sb-orbit-progress-fill{height:100%;border-radius:100px;background:linear-gradient(90deg,#6366f1,#a855f7,#ec4899,#a855f7,#6366f1);background-size:200% 100%;animation:sbOrbitShimmer 2s linear infinite}@keyframes sbOrbitShimmer{0%{background-position:200% 0}to{background-position:-200% 0}}h1,h2,h3,p{margin:0}h2{font-size:1.15rem}button{font:inherit}.app{position:relative;display:grid;grid-template-columns:15% 1fr;gap:16px;min-height:100dvh;padding:16px;max-width:none;width:100%;background:#0d0d14}.side{position:sticky;top:16px;align-self:start;background:#13131f;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.09);border-radius:16px;padding:14px;box-shadow:0 8px 32px #00000059;width:100%;min-width:200px;max-width:300px;overflow:hidden}.brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;color:#f0f0ff}.brand .logo{width:46px;height:46px;border-radius:12px;display:block;-o-object-fit:contain;object-fit:contain;image-rendering:auto;background:transparent!important;filter:none}.brand span{font-weight:900;letter-spacing:.3px}.nav{display:grid;gap:6px;margin:10px 0 14px}.nav-item{display:flex;align-items:center;gap:10px;border:1px solid transparent;background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none;border-radius:10px;padding:10px 12px;cursor:pointer;color:#88a;font-size:.9rem;font-weight:500;box-shadow:none;transition:all .2s ease}.nav-item:hover{background:#ffffff0f;color:#f0f0ff;box-shadow:none}.nav-item.is-active{background:#8b5cf626;border-color:#8b5cf64d;color:#a78bfa;box-shadow:none}.nav-item.is-active:before,.nav-item.is-active:after{content:none!important;display:none!important;filter:none!important;box-shadow:none!important}.helper{font-size:.9rem;color:#88a;background:#8b5cf614;backdrop-filter:none;-webkit-backdrop-filter:none;border:1px solid rgba(139,92,246,.2);border-radius:10px;padding:10px}.currency-icon{width:20px;height:20px;-o-object-fit:contain;object-fit:contain;vertical-align:middle;margin:0 2px}.robux-large{width:96px;height:96px;-o-object-fit:contain;object-fit:contain}.robux-card-icon{width:60px;height:60px;-o-object-fit:contain;object-fit:contain;margin-bottom:12px}.nav-icon{width:22px;height:22px;-o-object-fit:contain;object-fit:contain;vertical-align:middle;display:inline-block}.main{position:relative;background:#13131f;backdrop-filter:none;-webkit-backdrop-filter:none;border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:18px;box-shadow:none;overflow:hidden;width:100%;max-width:none}.top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px;flex-wrap:wrap}.user{display:flex;align-items:center;gap:12px}.avatar{width:54px;height:54px;border-radius:50%;border:3px solid #fff;box-shadow:0 6px 18px #00000014}.subtitle{color:var(--muted);font-size:.95rem;margin-top:2px}.wave{display:inline-block;transform-origin:70% 70%;animation:wave 2.4s ease-in-out infinite}@keyframes wave{0%{transform:rotate(0)}15%{transform:rotate(14deg)}30%{transform:rotate(-8deg)}45%{transform:rotate(12deg)}60%{transform:rotate(-4deg)}to{transform:rotate(0)}}.hero-stats{display:flex;flex-wrap:wrap;gap:8px}.top-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.pill{display:flex;align-items:center;gap:8px;background:#ffffff0f;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.1);border-radius:999px;padding:8px 12px;box-shadow:none;font-weight:600;color:#f0f0ff;transition:all .2s ease}.pill:hover{background:#ffffff17;border-color:#8b5cf64d}.pill.streak{background:#f973161f;border-color:#f9731640;color:#f97316}.seg{display:flex;border:1px solid rgba(255,255,255,.08);border-radius:12px;overflow:hidden;background:#ffffff0a;backdrop-filter:none;-webkit-backdrop-filter:none;box-shadow:none}.seg-btn{border:0;background:transparent;padding:8px 14px;font-weight:500;cursor:pointer;transition:all .2s ease;color:#88a}.seg-btn.is-active{background:#8b5cf633;color:#a78bfa;box-shadow:none}.seg-btn:hover:not(.is-active){background:#ffffff0f;color:#f0f0ff}.summary{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:12px 0 6px}@media (max-width: 1200px){.summary{grid-template-columns:repeat(2,1fr)}}.card{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;padding:14px;border:1px solid rgba(255,255,255,.08);border-radius:14px;background:#ffffff0d;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:none;overflow:hidden;isolation:isolate;transition:all .25s ease}.card:hover{background:#ffffff14;border-color:#8b5cf64d;box-shadow:0 0 24px #8b5cf61f;transform:translateY(-2px)}.card:after{display:none}.card .icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:22px;background:#8b5cf626}.card h3{font-size:1rem;color:#f0f0ff}.card p{color:#88a;font-size:.9rem}.card .big{font-weight:800;font-size:1.4rem;color:#f0f0ff}.section{margin-top:10px}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.tabs{display:flex;gap:6px}.tab{border:1px solid rgba(255,255,255,.08);background:#ffffff0a;backdrop-filter:none;-webkit-backdrop-filter:none;border-radius:20px;padding:8px 14px;font-weight:500;color:#88a;cursor:pointer;box-shadow:none;transition:all .2s ease}.tab:hover{background:#ffffff12;color:#f0f0ff}.tab.is-active{background:#8b5cf62e;border-color:#8b5cf666;color:#a78bfa;box-shadow:none}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.subject{background:#ffffff0a;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:14px;box-shadow:none;display:grid;gap:8px;position:relative;transition:all .25s ease;overflow:hidden}.subject:hover{background:#ffffff12;border-color:#8b5cf659;box-shadow:0 0 28px #8b5cf626;transform:translateY(-2px)}.subject .head{display:flex;align-items:center;justify-content:space-between}.subject-title{display:flex;align-items:center;gap:8px}.subject .badge{padding:4px 10px;border-radius:999px;background:#8b5cf61f;backdrop-filter:none;-webkit-backdrop-filter:none;border:1px solid rgba(139,92,246,.25);color:#a78bfa;font-weight:600;font-size:.82rem}.subject .progress{height:6px;background:#ffffff0f;border-radius:999px;overflow:hidden}.subject .bar{height:100%;width:0;background:linear-gradient(90deg,#8b5cf6,#ec4899);border-radius:inherit;transition:width .6s cubic-bezier(.2,.8,.2,1)}.subject .meta{display:flex;justify-content:space-between;color:#88a;font-size:.9rem}.subject .cta{display:flex;gap:8px}.subject .btn{border:0;border-radius:12px;padding:10px 12px;font-weight:900;cursor:pointer}html.sb-guest .sb-guest-overlay{position:absolute;inset:auto 0 0 0;padding:18px 18px 14px;border-radius:18px;background:linear-gradient(180deg,#0d0d1400,#0d0d14cc 30%,#0d0d14f0);border:1px solid rgba(255,255,255,.1);box-shadow:0 24px 80px #00000073;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}html.sb-guest .sb-guest-overlay__row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}html.sb-guest .sb-guest-overlay__title{font-weight:900;font-size:1.02rem;color:#f0f0ff}html.sb-guest .sb-guest-overlay__sub{color:#f0f0ffb8;font-size:.9rem;margin-top:4px}html.sb-guest .sb-guest-overlay__cta{display:flex;gap:10px;align-items:center}html.sb-guest #sb-catalog-grid.sb-guest-preview{position:relative}html.sb-guest #sb-catalog-grid.sb-guest-preview .subject-card:nth-child(n+4){filter:blur(7px);opacity:.28;pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}html.sb-guest #sb-catalog-grid.sb-guest-preview .sb-guest-overlay{margin-top:0}.pricing-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:10px}.pricing-title{display:grid;gap:4px}.pricing-title h2{margin:0}.pricing-title p{margin:0;color:#f0f0ffb3;font-weight:700;font-size:.92rem}.pricing-billing{display:flex;align-items:center;gap:10px;background:#ffffff0a;border:1px solid rgba(255,255,255,.1);border-radius:999px;padding:8px 10px}.pricing-billing .lbl{font-weight:900;font-size:.86rem;color:#f0f0ffc7}.pricing-billing .save{font-size:.78rem;font-weight:900;padding:4px 8px;border-radius:999px;background:#10b9811f;border:1px solid rgba(16,185,129,.25);color:#10b981f2}.pricing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}@media (max-width: 1100px){.pricing-grid{grid-template-columns:1fr}}.plan{display:grid;gap:10px;padding:16px;border-radius:18px;border:1px solid rgba(255,255,255,.1);background:#ffffff0a;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.plan--featured{border-color:#06b6d459;box-shadow:0 0 0 1px #06b6d41f inset,0 24px 80px #00000059}.plan__top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.plan__name{font-weight:900;font-size:1.05rem}.plan__desc{color:#f0f0ffb3;font-weight:700;font-size:.9rem;margin-top:2px}.plan__badge{padding:6px 10px;border-radius:999px;font-weight:900;font-size:.75rem;background:#06b6d41a;border:1px solid rgba(6,182,212,.25);color:#06b6d4f2}.plan__price{display:flex;align-items:baseline;gap:8px}.plan__price .num{font-size:2.1rem;font-weight:1000;letter-spacing:-.5px}.plan__price .per{color:#f0f0ffb3;font-weight:800;font-size:.92rem}.plan__cta{display:grid;gap:8px}.plan__cta .btn{width:100%;justify-content:center}.plan__list{display:grid;gap:8px;margin:4px 0 0;padding:0;list-style:none}.plan__li{display:flex;gap:10px;align-items:flex-start;color:#f0f0ffdb;font-weight:750;font-size:.92rem}.plan__li .ico{width:18px;height:18px;border-radius:6px;display:grid;place-items:center;background:#10b9811f;border:1px solid rgba(16,185,129,.22);color:#10b981f2;flex-shrink:0;margin-top:2px;font-size:.8rem}.plan__li.is-off{color:#f0f0ff59}.plan__li.is-off .ico{background:#ffffff0a;border-color:#ffffff14;color:#f0f0ff59}.btn-primary{color:#fff;background:linear-gradient(135deg,#8b5cf6,#ec4899);backdrop-filter:none;-webkit-backdrop-filter:none;box-shadow:none;border:none;font-weight:600;transition:all .2s ease}.btn-primary:hover{transform:translateY(-1px);opacity:.87;box-shadow:0 6px 20px #8b5cf659}.btn-ghost{background:#ffffff0f;backdrop-filter:none;-webkit-backdrop-filter:none;border:1px solid rgba(255,255,255,.12);color:#88a;box-shadow:none;transition:all .2s ease}.btn-ghost:hover{background:#ffffff1a;color:#f0f0ff;border-color:#fff3}.btn.is-loading{cursor:progress!important;opacity:.9}.btn.is-loading:after{content:"";display:inline-block;width:14px;height:14px;margin-left:10px;border-radius:999px;border:2px solid rgba(255,255,255,.45);border-top-color:#fffffff2;animation:sb-spin .8s linear infinite;vertical-align:-2px}@keyframes sb-spin{to{transform:rotate(360deg)}}.subject-icon{width:24px;height:24px;border-radius:6px;flex-shrink:0}.achievements{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(160px,1fr);gap:10px;overflow:auto;padding-bottom:6px}.badge-card{min-width:160px;background:#ffffff0a;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:12px;box-shadow:none;text-align:center;transition:all .25s ease}.badge-card:hover{background:#ffffff12;border-color:#8b5cf64d;transform:translateY(-2px)}.badge-card .emoji{font-size:28px}.badge-card h4{margin-top:6px;font-size:.98rem;color:#f0f0ff}.badge-card p{color:#88a;font-size:.88rem}.milestone{background:#ffffff0a;border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:14px;box-shadow:none;text-align:center;min-width:180px;transition:transform .2s ease}.milestone:hover{transform:translateY(-2px);border-color:#8b5cf64d}.milestone .emoji{font-size:32px;margin-bottom:8px;display:block}.milestone h4{font-size:1rem;margin-bottom:4px;font-weight:700;color:#f0f0ff}.milestone p{color:#88a;font-size:.88rem;line-height:1.4}.activity{display:grid;gap:8px;list-style:none;padding:0;margin:0}.activity li{background:#ffffff0a;backdrop-filter:none;-webkit-backdrop-filter:none;border:1px solid rgba(255,255,255,.07);border-radius:10px;padding:10px 14px;display:flex;justify-content:space-between;align-items:center;box-shadow:none;color:#88a;font-size:.9rem;transition:all .2s ease}.activity li:hover{background:#ffffff12;border-color:#ffffff1f;color:#f0f0ff}.activity li span{color:#56a}.foot{margin-top:10px;color:#7a8c98;text-align:center}.avatar-placeholder{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,#f3f6ff,#fff);border:3px solid var(--line);box-shadow:0 6px 18px #00000014;position:relative;display:flex;align-items:center;justify-content:center;overflow:visible}.avatar-icon{font-size:32px}.avatar-upload-btn{position:absolute;bottom:-4px;right:-4px;width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));border:2px solid #fff;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:14px;box-shadow:0 4px 12px #00000026;transition:transform .2s ease}.avatar-upload-btn:hover{transform:scale(1.1)}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}.col-span-2{grid-column:span 2}.field{display:grid;gap:8px}.field label{font-weight:800;font-size:.95rem}input[type=text],input[type=number],textarea,select{border:1px solid var(--glass-border);background:#ffffff4d;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:inset 4px 4px 8px #0000000d,inset -4px -4px 8px #ffffff4d;border-radius:14px;padding:10px 12px;font-size:1rem;outline:none;transition:all .2s ease}input:focus,textarea:focus,select:focus{background:#ffffff80;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-color:var(--primary);box-shadow:0 0 0 3px #7c83ff33,inset 4px 4px 8px #0000000d,inset -4px -4px 8px #fff6}textarea{resize:vertical;font-family:inherit}select{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236a7b8a' d='M6 9L1 4h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}.stepper{display:flex;align-items:center;gap:10px}.stepper input{flex:1;text-align:center;font-weight:800}.step{border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px;font-weight:900;cursor:pointer;font-size:18px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.step:hover{background:linear-gradient(135deg,#f3f6ff,#fff);border-color:var(--primary)}.switch{position:relative;display:inline-block;width:48px;height:28px;flex-shrink:0}.switch input{display:none}.switch i{position:absolute;top:0;right:0;bottom:0;left:0;background:#e8eff4;border:1px solid var(--line);border-radius:999px;transition:.25s;cursor:pointer}.switch i:after{content:"";position:absolute;left:3px;top:3px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 2px 8px #0000001f;transition:.25s}.switch input:checked+i{background:linear-gradient(135deg,var(--primary),var(--accent))}.switch input:checked+i:after{transform:translate(20px)}.themes{display:flex;gap:10px;margin:8px 0 16px;flex-wrap:wrap}.chip{display:flex;align-items:center;gap:10px;border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;font-weight:800;cursor:pointer;transition:all .2s ease}.chip.is-active{box-shadow:inset 0 0 0 2px #7c83ff40;background:linear-gradient(135deg,#f3f6ff,#fff)}.chip:hover:not(.is-active){background:#f9fafb;transform:translateY(-1px)}.swatch{--c1:#7FE3E3;--c2:#7C83FF;width:28px;height:20px;border-radius:8px;background:linear-gradient(135deg,var(--c1),var(--c2));border:1px solid rgba(0,0,0,.05);box-shadow:0 2px 6px #00000014}.card-title{font-weight:900;margin-bottom:12px;font-size:1.05rem}.actions{display:flex;gap:10px;flex-wrap:wrap}.hint{color:#6a7b8a;margin:6px 0 12px;font-size:.9rem;line-height:1.4}.row{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:10px 0;font-size:.95rem}.card.danger:after{background:radial-gradient(closest-side,rgba(255,204,204,.5),transparent 65%)}.toast{position:fixed;left:50%;bottom:20px;transform:translate(-50%) translateY(20px);background:#111111f2;color:#fff;padding:12px 18px;border-radius:14px;opacity:0;pointer-events:none;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);font-weight:600;font-size:.95rem;box-shadow:0 8px 24px #0000004d;z-index:1000;min-width:200px;text-align:center}.toast.show{animation:toastSlide .9s ease}@keyframes toastSlide{0%{opacity:0;transform:translate(-50%) translateY(20px)}15%,85%{opacity:1;transform:translate(-50%) translateY(0)}to{opacity:0;transform:translate(-50%) translateY(10px)}}@media (max-width:1100px){.grid-2{grid-template-columns:1fr}}@media (max-width:820px){.stepper{flex-wrap:wrap}.themes{flex-direction:column}.chip{justify-content:center}}.trend .spark-wrap{height:160px;width:100%;position:relative}.trend svg{width:100%;height:100%}.progress-legend{display:flex;gap:16px;align-items:center;color:#5b7a88;font-size:.92rem;margin-top:8px;font-weight:600}.progress-legend .dot{width:12px;height:12px;border-radius:50%;display:inline-block;margin-right:4px}.progress-legend .dot.blue{background:#7c83ff}.progress-legend .dot.mint{background:#39c6cc}.heat{max-height:320px;overflow:hidden}.heat .head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.heat .head h3{font-size:1rem;font-weight:700}.heat .head span{font-size:.8rem;color:var(--muted)}.heat-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:3px;margin-bottom:8px}.heat-grid .cell{aspect-ratio:1/1;border-radius:5px;background:#e9f6f7;border:1px solid #d9ecee;transition:transform .2s ease;min-height:32px}.heat-grid .cell[data-i]{background:var(--c,#e9f6f7)}.heat-grid .cell:hover{transform:scale(1.1);z-index:1;box-shadow:0 4px 12px #0000001a}.heat-legend{display:flex;align-items:center;gap:5px;color:#5b7a88;font-size:.8rem;justify-content:center;flex-wrap:wrap}.heat-legend .scale{display:flex;gap:2px;margin:0 3px}.heat-legend .scale i{width:14px;height:9px;border-radius:3px;background:var(--c);border:1px solid rgba(0,0,0,.05)}.subject-card .mini-spark{width:120px;height:36px}.subject-card .mini-spark path{fill:none;stroke-width:2.5}.blob{position:fixed;z-index:-1;filter:blur(8px);opacity:.35;pointer-events:none;display:none!important}.b1{left:-120px;top:-80px;width:320px;height:320px;border-radius:45% 55% 60% 40%;background:radial-gradient(#ffd0da,#ffc6f3)}.b2{right:-140px;top:-40px;width:360px;height:360px;border-radius:50% 50% 40% 60%;background:radial-gradient(#d3e4ff,#b6f8f0)}.b3{right:-100px;bottom:-120px;width:320px;height:320px;border-radius:60% 40% 55% 45%;background:radial-gradient(#ffe49c,#ffc7c7)}@media (max-width: 1400px){.grid{grid-template-columns:repeat(3,1fr)}.side{padding:12px}#progress-page .split{grid-template-columns:1fr}}@media (max-width: 1100px){.summary{grid-template-columns:1fr 1fr}.grid{grid-template-columns:repeat(2,1fr)}.side{padding:10px}.nav-item{padding:8px 10px}.brand .logo{width:40px;height:40px}.brand span{font-size:.9rem}#progress-page .grid.subjects{grid-template-columns:1fr}}@media (max-width: 820px){.app{grid-template-columns:1fr;padding:12px;padding-bottom:calc(var(--bottom-nav-h) + env(safe-area-inset-bottom,0px) + 12px)}.side{display:none}.main{padding-bottom:calc(var(--bottom-nav-h) + env(safe-area-inset-bottom,0px) + 10px)}#hidden-pages>section{grid-column:1}.bottom-nav{position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));height:var(--bottom-nav-h);z-index:12000;display:grid;grid-template-columns:repeat(5,1fr);gap:8px;padding:10px;border-radius:22px;background:#ffffff61;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.45);box-shadow:18px 18px 40px #5d477738,inset 8px 8px 18px #ffffff4d}.bottom-nav-item{border:1px solid rgba(255,255,255,.35);background:#fff3;border-radius:16px;display:grid;place-items:center;padding:8px 6px;gap:2px;cursor:pointer;transition:transform .12s ease,background .12s ease,box-shadow .12s ease}.bottom-nav-item .bn-ico{font-size:18px;line-height:1}.bottom-nav-item .bn-lbl{font-size:11px;font-weight:800;color:#1f2b3ad1}.bottom-nav-item.is-active{background:#ffffff73;box-shadow:inset 0 0 0 2px #7c83ff38}.bottom-nav-item:active{transform:scale(.98)}.nav,.brand,.helper{display:none}.summary,.grid{grid-template-columns:1fr}.top{flex-direction:column;align-items:flex-start}.top-actions{width:100%}.seg{width:100%;justify-content:stretch}.seg-btn{flex:1}#progress-page .side-col{position:static;max-height:none}.carousel{grid-auto-columns:minmax(150px,1fr)}}.bottom-nav{display:none}@media (max-width: 820px){.home-week-strip{margin:8px 0 4px}#progress-page .split{grid-template-columns:1fr}#progress-page .side-col{position:static;max-height:none;overflow:visible}#progress-page .heat-grid .cell{min-height:22px}}@media (min-width: 1200px){.app{width:90%;max-width:none;margin:0 auto;padding:20px;gap:20px;grid-template-columns:15% 1fr}.side{padding:16px}.grid{grid-template-columns:repeat(4,1fr)}.summary{grid-template-columns:repeat(3,1fr)}}@media (min-width: 1600px){.app{width:88%;padding:24px;gap:24px;grid-template-columns:15% 1fr}.side{padding:18px}.grid{grid-template-columns:repeat(5,1fr)}.summary{grid-template-columns:repeat(3,1fr)}}@media (min-width: 2000px){.app{width:85%;padding:32px;gap:32px;grid-template-columns:15% 1fr}.side{padding:20px}.grid{grid-template-columns:repeat(6,1fr)}.summary{grid-template-columns:repeat(3,1fr)}}.week{display:flex;gap:10px;overflow:auto;padding-bottom:4px}.week--compact .day{min-width:54px;padding:8px;border-radius:14px}.week--compact .day .ring{width:38px;height:38px}.week--compact .day .ring span{width:26px;height:26px}.week--compact .day .label{font-size:.8rem}.day{min-width:70px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;box-shadow:var(--shadow);display:grid;justify-items:center;gap:6px}.day .ring{width:42px;height:42px;border-radius:50%;background:conic-gradient(var(--primary) calc(var(--p,0)*1%),#eef2f7 0);display:grid;place-items:center}.day .ring span{background:#fff;border:1px solid var(--line);border-radius:50%;width:30px;height:30px;display:grid;place-items:center;font-weight:900}.day .label{font-size:.9rem}.day.today{outline:2px solid rgba(124,131,255,.25)}.split{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:16px;align-items:start}.side-col{position:sticky;top:20px;max-height:calc(100vh - 40px);overflow-y:auto;display:flex;flex-direction:column;gap:14px}#progress-page .split{grid-template-columns:minmax(0,1fr) 380px}#progress-page .side-col{max-height:calc(100vh - 60px);gap:16px}#progress-page .side-col .card{padding:16px}#progress-page .heat,#progress-page .tiny-stats{flex-shrink:0}@media (max-width: 1400px){#subjects-page .split{grid-template-columns:1fr}#subjects-page .side-col{order:-1}}.grid.subjects{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}.subjects-progress-list{display:none}.subject-card{background:#ffffff0d;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.09);border-radius:16px;padding:20px;cursor:pointer;display:flex;flex-direction:column;gap:14px;transition:all .25s ease;position:relative;overflow:hidden}.subject-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent, var(--primary)),var(--primary));opacity:0;transition:opacity .2s}.subject-card:hover{background:#ffffff14;border-color:#8b5cf659;transform:translateY(-2px);box-shadow:0 8px 32px #8b5cf62e}.subject-card:hover:before{opacity:1}.subject-card-header{display:flex;align-items:center;gap:12px}.subject-icon-wrap{width:44px;height:44px;border-radius:12px;background:#8b5cf62e;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:22px}.subject-name{font-size:.95rem;font-weight:700;color:var(--ink);line-height:1.3}.subject-level{font-size:.78rem;color:var(--muted);margin-top:3px}.progress-bar-wrap{margin:0}.progress-bar-bg{height:6px;background:#ffffff12;border-radius:3px;overflow:hidden}.progress-bar-fill{height:100%;border-radius:3px;background:linear-gradient(90deg,var(--accent, var(--primary)),var(--primary));transition:width .5s ease}.progress-label{font-size:.75rem;color:var(--muted);margin-top:5px}.subject-card-actions{display:flex;gap:8px;margin-top:auto}.subject-card-actions .btn-primary{flex:1}.subject-card-actions .btn-ghost{flex-shrink:0}.add-subject-card{border-style:dashed;border-color:#8b5cf64d;align-items:center;justify-content:center;text-align:center;color:var(--muted);min-height:160px}.add-subject-card:hover{border-color:#8b5cf68c;color:var(--primary)}.add-subject-card .add-icon{font-size:28px;line-height:1;margin-bottom:2px}.add-subject-card .add-text{font-size:.95rem;font-weight:700;color:var(--ink)}.add-subject-card .add-sub{font-size:.78rem;opacity:.6}.btn{border:0;border-radius:12px;padding:10px 12px;font-weight:900;cursor:pointer}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent))}.btn-ghost{background:#ffffff12;border:1px solid rgba(255,255,255,.12);color:var(--ink)}.btn-ghost:hover{background:#ffffff1f;border-color:#8b5cf666;color:var(--ink)}.carousel{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(180px,1fr);gap:8px;overflow:auto;padding-bottom:4px;max-width:100%}.rec{background:#ffffff0d;border:1px solid rgba(255,255,255,.09);border-radius:14px;padding:10px;box-shadow:var(--shadow);min-width:180px;color:var(--ink);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.rec h3{font-size:.95rem;margin:4px 0}.rec .tag{display:inline-flex;gap:6px;align-items:center;border:1px solid var(--line);background:#f7fbff;border-radius:999px;padding:6px 10px;font-weight:800;margin-bottom:8px}.rec .tag .rec-subject-icon{width:24px;height:24px;border-radius:50%;-o-object-fit:contain;object-fit:contain}.rec-time{color:var(--muted);margin:6px 0 10px}.sb-managebar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:#ffffff0a;margin:6px 0 12px}.sb-managebar.hidden{display:none!important}.sb-managebar__left{color:var(--muted);font-weight:800}.sb-managebar__left b{color:var(--ink)}.sb-managebar__actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.sb-danger-text{padding:10px 12px;border-radius:14px;border:1px solid rgba(239,68,68,.25);background:#ef44441a;color:#f0f0ffeb;font-weight:800;line-height:1.35}.sb-folder-section{grid-column:1 / -1;margin-top:10px}.sb-folder-title{font-weight:900;color:var(--ink);margin:8px 2px;opacity:.95}.sb-folder-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;margin-bottom:6px}.sb-subject-check{position:absolute;top:10px;left:10px;display:flex;align-items:center;gap:8px;z-index:2}.sb-subject-check input{-moz-appearance:none;appearance:none;-webkit-appearance:none;width:22px;height:22px;border-radius:999px;border:1px solid rgba(255,255,255,.22);background:#0003;box-shadow:0 8px 24px #00000059;cursor:pointer;position:relative;outline:none}.sb-subject-check span{display:none}.sb-subject-check input:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;margin:auto;width:10px;height:10px;border-radius:999px;background:linear-gradient(135deg,#8b5cf600,#ec489900);transform:scale(.8);opacity:0;transition:opacity .15s ease,transform .15s ease}.sb-subject-check input:checked{border-color:#ec489966;background:#ec48991f}.sb-subject-check input:checked:after{opacity:1;transform:scale(1);background:linear-gradient(135deg,#8b5cf6f2,#ec4899f2)}.sb-subject-check input:focus-visible{box-shadow:0 0 0 3px #8b5cf638,0 8px 24px #00000059}.tasks{list-style:none;margin:0;padding:0;display:grid;gap:6px;max-height:180px;overflow-y:auto}.tasks li{background:#ffffff0d;border:1px solid rgba(255,255,255,.09);color:var(--ink);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:12px;padding:8px 10px;display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:.9rem}.tasks li strong{font-size:.9rem;color:var(--ink)}.tasks .when{color:var(--muted)}.badge{padding:6px 10px;border-radius:999px;font-weight:900;background:#8b5cf62e;border:1px solid rgba(139,92,246,.25);color:#d7c9ff}.card{position:relative;background:#ffffff0a;border:1px solid rgba(255,255,255,.1);border-radius:18px;padding:16px;box-shadow:0 10px 30px #03071459;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);overflow:hidden}.card:after{content:"";position:absolute;inset:auto -20% 0 -20%;height:36%;background:radial-gradient(closest-side,rgba(139,92,246,.24),transparent 65%);filter:blur(18px);z-index:-1}.mini-cal{max-height:420px;overflow:hidden}.mini-cal .head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;font-size:.95rem}.mini-cal h3{font-size:1.05rem;font-weight:800;color:var(--ink);letter-spacing:.04em;text-transform:uppercase}.calendar{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.calendar .cday{aspect-ratio:1/1;border:1px solid transparent;border-radius:8px;display:grid;place-items:center;background:#ffffff08;color:var(--muted);font-weight:800;font-size:.85rem;min-height:32px}.calendar .cday.week{background:transparent;border:0;color:#d7def7;font-weight:700;font-size:.78rem;min-height:18px;aspect-ratio:auto}.cday.done{background:linear-gradient(180deg,#10b98147,#10b9812e);color:#7ff2c9}.cday.planned{background:#ffffff08}.cday.today{background:linear-gradient(135deg,#8b5cf6,#a855f7);color:#fff;border-color:#c8afffb3}.legend{display:none}.legend .dot{width:12px;height:12px;border-radius:50%;flex-shrink:0}.legend .dot.done{background:#5ad0a2}.legend .dot.planned{background:#ffb45a}.tiny-stats{max-height:220px;overflow:hidden}.tiny-stats h3{margin-bottom:10px;font-size:1.02rem;font-weight:800;color:#d5def8;text-transform:uppercase;letter-spacing:.04em}.tiny-stats ul{margin:0;padding:0;list-style:none;display:grid;gap:0}.tiny-stats li{display:flex;align-items:center;justify-content:space-between;background:transparent;border:0;border-bottom:1px solid rgba(255,255,255,.1);border-radius:0;padding:10px 0;font-size:.95rem}.tiny-stats li span{font-size:.95rem;color:#b6c3ea;line-height:1.3}.tiny-stats b{font-size:1.9rem;font-weight:800;color:#f1f5ff}#subjects-page .section{margin-top:8px;margin-bottom:8px}#subjects-page .section-head{margin-bottom:6px}#subjects-page .section-head h2{font-size:1.1rem}#chapters-page{width:100%;max-width:none;padding:0 8px 10px}.chapter-page{padding:22px;background:radial-gradient(130% 120% at 40% 0%,rgba(7,68,108,.22),transparent 52%),#090d1e;border:1px solid rgba(255,255,255,.09);border-radius:22px}.chapter-page-header{display:flex;align-items:flex-start;gap:16px;margin-bottom:16px}.back-btn{border:1px solid rgba(255,255,255,.12);background:#ffffff0a;color:var(--ink);border-radius:12px;padding:10px 12px;font-weight:700;cursor:pointer;box-shadow:none!important}.back-btn:hover{border-color:#a78bfa73;background:#8b5cf61f}.back-btn:focus,.back-btn:focus-visible{outline:none;box-shadow:none!important}.chapter-page-title{font-size:2rem;font-weight:800;color:#e9edff}.chapter-page-sub{color:#a7b4da;font-size:.95rem}.chapter-page-tags{margin-left:auto;display:flex;gap:10px;align-items:center}.tag{padding:8px 10px;border-radius:999px;font-weight:700;font-size:.8rem}.tag.purple{background:#8b5cf638;color:#cab7ff}.tag.green{background:#10b98138;color:#8af5ce}.chapter-difficulty-row{display:flex;gap:8px;align-items:center;margin-bottom:18px}.difficulty-caption{font-size:.86rem;color:#a7b4da}.chapters-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.topics-head{margin-top:22px;padding-top:18px;position:relative}.topics-head:before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(236,72,153,.55),rgba(139,92,246,.55),transparent)}.topics-head h2{display:flex;align-items:center;gap:10px}.topics-head h2:after{content:"Подтемы выбранной главы";font-size:.78rem;font-weight:800;color:#a78bfae6;background:#8b5cf61a;border:1px solid rgba(139,92,246,.22);padding:6px 10px;border-radius:999px}.topics-list-page{margin-top:8px;padding:12px;border-radius:18px;background:#ffffff08;border:1px dashed rgba(255,255,255,.12)}.topic-card-page{background:#14182e9e;border-color:#ffffff14}.topic-card-page:hover{border-color:#a78bfa66;transform:translate(6px)}.chapter-card-page{background:#13172dd6;border:1px solid rgba(138,114,255,.18);border-radius:14px;padding:16px;position:relative}.chapter-card-page.is-selected{border-color:#ec489973;box-shadow:0 0 0 2px #ec48992e,0 18px 50px #00000059}.chapter-card-page.is-selected .chapter-card-title{color:#fff}.chapter-card-page:hover{border-color:#b8a1ff73;transform:translateY(-2px)}.chapter-card-page .chapter-card-badge{position:absolute;top:10px;right:10px;padding:4px 8px;border-radius:999px;font-size:.72rem}.badge-new{background:#8b5cf638;color:#d7c9ff}.chapter-card-page .chapter-card-icon{font-size:1.3rem}.chapter-card-page .chapter-number{margin-top:8px;color:#95a4d2;font-size:.72rem;text-transform:uppercase}.chapter-card-page .chapter-card-title{margin:7px 0 6px;font-size:1.02rem;color:#f3f5ff}.chapter-card-page .chapter-card-desc{font-size:.84rem;color:#95a4d2;line-height:1.45}.chapter-card-page .chapter-card-meta{margin-top:10px;display:flex;justify-content:space-between;color:#8ea0d8;font-size:.78rem}.topics-head{margin-top:20px}.topics-list-page{display:grid;gap:10px}.topic-card-page{background:#14182eb8;border:1px solid rgba(255,255,255,.09);border-radius:14px;padding:14px 16px}.topic-card-page,.topic-card-page h3,.topic-card-page p,.topic-card-page .topic-meta-row,.topic-card-page .topic-meta-row span{color:#eef2ff}.topic-card-page.is-loading{opacity:.85;pointer-events:none}.topic-card-page.is-loading .topic-arrow{color:transparent;position:relative}.topic-card-page.is-loading .topic-arrow:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;margin:auto;width:16px;height:16px;border-radius:999px;border:2px solid rgba(255,255,255,.2);border-top-color:#ec4899e6;border-right-color:#8b5cf6e6;animation:sbspin .9s linear infinite}.topic-card-page:hover{border-color:#e5a8ff6b;transform:translate(4px)}.topic-card-page--extra{border-style:dashed;border-color:#10b98140}.topic-card-page--extra .topic-chip{background:#10b98129;color:#b7f7df}.sb-topic-menu-btn{border:1px solid rgba(255,255,255,.12);background:#ffffff0a;color:#f0f0ff;width:34px;height:34px;border-radius:12px;cursor:pointer;font-weight:900}.sb-topic-menu-btn:hover{border-color:#a78bfa73;background:#8b5cf61f}.topic-card-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.topic-chip{display:block;width:-moz-fit-content;width:fit-content;padding:4px 8px;border-radius:999px;font-size:.72rem;background:#ec48992e;color:#f9abd4;margin-bottom:8px;text-align:left}.topic-chip__label{opacity:.9}.topic-chip__num{font-weight:900;color:#fff}.topic-page-title{margin:0 0 4px;color:#fff!important;opacity:1}.topic-page-desc{margin:0;color:#eef2ff;font-size:.88rem;opacity:.88}.topic-progress-line{margin-top:8px;height:5px;background:#ffffff14;border-radius:999px;overflow:hidden}.topic-progress-line>div{height:100%;background:linear-gradient(90deg,#9f6dff,#ec4899)}.topic-arrow{font-size:1.2rem;color:#c4b2ff;align-self:center}.topic-meta-row{margin-top:10px;display:flex;justify-content:space-between;font-size:.82rem;color:#eef2ff;opacity:.8}.sb-inline-loader{display:flex;align-items:center;gap:10px;padding:16px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:#ffffff0a}.sb-inline-loader__spinner{width:18px;height:18px;border-radius:999px;border:2px solid rgba(255,255,255,.18);border-top-color:#ec4899e6;border-right-color:#8b5cf6e6;animation:sbspin .9s linear infinite}.sb-inline-loader__text{color:var(--muted);font-weight:800}#subjects-page #weekStrip{display:none!important}.sb-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:20000;padding:16px}.sb-modal{width:min(980px,98vw);background:#0d0d14f5;color:var(--ink);border-radius:22px;border:1px solid rgba(255,255,255,.1);box-shadow:0 24px 70px #0000008c;overflow:hidden}.sb-modal.sb-modal--catalog{width:min(1180px,98vw)}.sb-modal.sb-modal--catalog .sb-modal-body{padding:14px 16px}.sb-modal.sb-modal--catalog .sb-catalog-preview__cols{gap:14px}.sb-modal.sb-modal--catalog .sb-catalog-preview__chapters,.sb-modal.sb-modal--catalog .sb-catalog-preview__topics{min-height:520px;max-height:min(62vh,640px);overflow:auto}.sb-modal.sb-modal--catalog .sb-catalog-preview__cols{grid-template-columns:minmax(320px,38%) minmax(0,1fr)}@media (max-width: 900px){.sb-modal.sb-modal--catalog{width:min(760px,98vw)}.sb-modal.sb-modal--catalog .sb-catalog-preview__cols{grid-template-columns:1fr}.sb-modal.sb-modal--catalog .sb-catalog-preview__chapters,.sb-modal.sb-modal--catalog .sb-catalog-preview__topics{min-height:240px;max-height:45vh}}.sb-modal-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;background:linear-gradient(135deg,#7c83fff2,#7fe3e3e6);color:#fff}.sb-modal-head h3{font-size:1.1rem;font-weight:900}.sb-icon-btn{border:0;background:#ffffff38;color:#fff;width:38px;height:38px;border-radius:999px;cursor:pointer;display:grid;place-items:center;font-weight:900}.sb-modal-body{padding:16px 18px;display:grid;gap:14px}.sb-field{display:grid;gap:8px}.sb-field input,.sb-field textarea{color:#111!important;background:#ffffffeb;border:1px solid rgba(255,255,255,.2)}.sb-field input::-moz-placeholder,.sb-field textarea::-moz-placeholder{color:#0000008c}.sb-field input::placeholder,.sb-field textarea::placeholder{color:#0000008c}.sb-field>span{font-weight:900;color:#f0f0ffe6}.sb-radio-group{display:grid;gap:10px}.sb-radio{display:grid;grid-template-columns:20px 1fr;gap:12px;align-items:start;padding:12px;border-radius:16px;border:1px solid rgba(255,255,255,.12);background:#ffffff0f;cursor:pointer;transition:background .15s ease,border-color .15s ease,transform .15s ease}.sb-radio input{margin-top:4px;width:18px;height:18px}.sb-radio:hover{background:#ffffff1a;border-color:#7c83ff59}.sb-radio strong{display:block;font-weight:900;color:#f0f0ffeb;line-height:1.2}.sb-radio small{display:block;margin-top:4px;line-height:1.35;color:var(--muted);font-weight:700}.sb-status{padding:10px 12px;border-radius:14px;border:1px solid rgba(124,131,255,.25);background:#7c83ff1a;color:#f0f0ffeb;font-weight:800}.sb-catalog-mini{display:grid;gap:8px}.sb-catalog-mini__item{width:100%;text-align:left;padding:10px 12px;border-radius:12px;border:1px solid rgba(255,255,255,.1);background:#ffffff08;color:#f0f0ff;cursor:pointer;font-weight:800}.sb-catalog-mini__item:hover{border-color:#a78bfa73;background:#8b5cf61a}.sb-modal-actions{padding:14px 18px 18px;display:flex;justify-content:flex-end;gap:10px;border-top:1px solid rgba(255,255,255,.1)}.sb-folders-note{color:var(--muted);font-weight:800;font-size:.86rem;margin-bottom:10px}.sb-folders-list{display:grid;gap:10px}.sb-folder-row{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:#ffffff08}.sb-folder-row.is-dragging{opacity:.65}.sb-folder-row.is-deleted{opacity:.55;filter:saturate(.6)}.sb-folder-drag{width:26px;text-align:center;color:#a78bfa;font-weight:900;cursor:grab;-webkit-user-select:none;-moz-user-select:none;user-select:none}.sb-folder-name{flex:1;min-width:0;border-radius:12px;border:1px solid rgba(255,255,255,.1);background:#0d0d1459;padding:10px 12px;color:#f0f0ff;font-weight:900}.sb-folder-name:disabled{opacity:.6}.grid.subjects::-webkit-scrollbar,.tasks::-webkit-scrollbar,.side-col::-webkit-scrollbar{width:6px}.grid.subjects::-webkit-scrollbar-track,.tasks::-webkit-scrollbar-track,.side-col::-webkit-scrollbar-track{background:#f2f5f8;border-radius:10px}.grid.subjects::-webkit-scrollbar-thumb,.tasks::-webkit-scrollbar-thumb,.side-col::-webkit-scrollbar-thumb{background:#c5cfd9;border-radius:10px}.grid.subjects::-webkit-scrollbar-thumb:hover,.tasks::-webkit-scrollbar-thumb:hover,.side-col::-webkit-scrollbar-thumb:hover{background:#a8b4c0}@media (max-width:1100px){#subjects-page .split{grid-template-columns:1fr}.side-col{position:static;max-height:none}}@media (max-width: 820px){#subjects-page .side-col{display:none}#subjects-page .grid.subjects{grid-template-columns:1fr;gap:10px}#progress-page .summary{grid-template-columns:1fr 1fr}}.subject-progress-row{display:grid;gap:8px;padding:12px;border-radius:16px;border:1px solid var(--glass-border);background:#ffffff4d;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:14px 14px 28px #5d47772e,inset 6px 6px 12px #ffffff38}.subject-progress-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.subject-progress-title{display:flex;align-items:center;gap:10px;font-weight:900}.subject-progress-title img{width:28px;height:28px;border-radius:10px;-o-object-fit:contain;object-fit:contain}.subject-progress-meta{font-size:.85rem;color:var(--muted);font-weight:700}.subject-progress-bar{height:10px;border-radius:999px;background:#ffffff59;border:1px solid rgba(255,255,255,.35);overflow:hidden}.subject-progress-bar i{display:block;height:100%;width:0%;border-radius:inherit;background:linear-gradient(90deg,var(--primary),var(--accent))}.subject-progress-actions{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center}.subject-progress-actions .btn-primary{width:100%}#subjects-page{width:100%;max-width:none}#subjects-page .split,#subjects-page .section,#subjects-page .top{width:100%}@media (min-width: 1200px){#subjects-page .split{grid-template-columns:minmax(0,1fr) 360px}#progress-page .split{grid-template-columns:minmax(0,1fr) 380px}}@media (min-width: 1600px){#subjects-page .grid.subjects{grid-template-columns:repeat(3,1fr)}#subjects-page .split{grid-template-columns:minmax(0,1fr) 360px}#progress-page .split{grid-template-columns:minmax(0,1fr) 400px}}@media (min-width: 2000px){#subjects-page .grid.subjects{grid-template-columns:repeat(4,1fr)}#subjects-page .split{grid-template-columns:minmax(0,1fr) 360px}#progress-page .split{grid-template-columns:minmax(0,1fr) 420px}}#rewards-page .banner{background:linear-gradient(135deg,#7c83ff,#7fe3e3);color:#fff;margin-bottom:10px}#rewards-page .banner .badge{display:inline-block;background:#ffffff1a;border:1px solid #ffffff3a;color:#fff;border-radius:999px;padding:6px 10px;font-weight:900;font-size:.85rem}#rewards-page .banner .big-num{display:flex;align-items:center;gap:8px;margin:10px 0 6px}#rewards-page .banner .big-num b{font-size:1.6rem}#rewards-page .banner .hex{filter:drop-shadow(0 6px 12px #0002);font-size:1.4rem}#rewards-page .banner .muted{opacity:.9;font-size:.9rem}#rewards-page .banner .progress{display:flex;align-items:center;gap:10px;margin-top:10px}#rewards-page .banner .bar{flex:1;height:12px;background:#fff3;border-radius:999px;overflow:hidden}#rewards-page .banner .bar i{display:block;height:100%;background:#fff;border-radius:inherit;transition:width .3s ease}#rewards-page .banner .progress-note{white-space:nowrap;font-size:.9rem}#rewards-page .tabs{display:flex;gap:6px;flex-wrap:wrap}#rewards-page .tab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 10px;font-weight:800;color:#355a64;cursor:pointer;font-size:.9rem;transition:all .2s ease}#rewards-page .tab.is-active{box-shadow:inset 0 0 0 2px #7c83ff40}#rewards-page .tab:hover:not(.is-active){background:#f9fafb}#rewards-page .grid.rewards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}#rewards-page .reward{position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:var(--shadow);display:grid;gap:8px;transition:all .2s ease}#rewards-page .reward:hover{transform:translateY(-2px);box-shadow:0 16px 36px #1f2b3a1f}#rewards-page .reward .head{display:flex;gap:8px;align-items:center}#rewards-page .reward .emoji{font-size:24px}#rewards-page .reward h3{font-size:1rem;margin:0}#rewards-page .reward .meta{color:var(--muted);font-size:.92rem;margin:0}#rewards-page .cost{display:inline-flex;align-items:center;gap:6px;background:#f7f9ff;border:1px solid #e3e9ff;border-radius:999px;padding:6px 10px;font-weight:900;font-size:.9rem}#rewards-page .cost img{width:16px;height:16px;-o-object-fit:contain;object-fit:contain}#rewards-page .lock{position:absolute;top:0;right:0;bottom:0;left:0;background:#fff6;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:grid;place-items:center;border-radius:18px;z-index:1}#rewards-page .lock span{background:#fff;border:1px solid var(--line);padding:6px 10px;border-radius:999px;font-size:.85rem;font-weight:700}#rewards-page .btn{border:0;border-radius:12px;padding:10px 12px;font-weight:900;cursor:pointer;transition:all .2s ease}#rewards-page .btn-primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent))}#rewards-page .btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 16px #7c83ff4d}#rewards-page .btn-ghost{background:#fff;border:1px solid var(--line);color:var(--muted)}#rewards-page .btn:disabled{opacity:.5;cursor:not-allowed}#rewards-page .history{list-style:none;margin:0;padding:0;display:grid;gap:8px}#rewards-page .history li{background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;display:flex;justify-content:space-between;align-items:center}#rewards-page .history .when{color:#6a7b8a;font-size:.9rem}#rewards-page .foot{margin-top:12px;color:#7a8c98;text-align:center;font-size:.9rem}@media (max-width: 1100px){#rewards-page .grid.rewards{grid-template-columns:1fr 1fr}}@media (max-width: 820px){#rewards-page .grid.rewards{grid-template-columns:1fr}#rewards-page .top{flex-direction:column;align-items:flex-start}#rewards-page .tabs{width:100%}#rewards-page .tab{flex:1;text-align:center}}.toast{position:fixed;left:50%;bottom:18px;transform:translate(-50%) translateY(20px);background:#111b;color:#fff;padding:10px 14px;border-radius:12px;opacity:0;pointer-events:none;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:1000;font-weight:600}.nav-item,.btn,button{pointer-events:auto!important;cursor:pointer!important;position:relative;z-index:1;user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.nav-item{pointer-events:auto!important;cursor:pointer!important;z-index:10}.nav-item:hover{background:linear-gradient(180deg,#fff,#f7f9ff);transform:translateY(-1px)}#hidden-pages{width:100%;max-width:none;display:contents}#hidden-pages>section{width:100%!important;max-width:none!important;grid-column:2}#hidden-pages>section>div{max-width:none!important;width:100%!important;margin:0!important}.sb-tests-ring{position:relative;width:48px;height:48px;flex-shrink:0;cursor:default}.sb-ring-svg{width:100%;height:100%;transform:rotate(-90deg)}.sb-ring-track{fill:none;stroke:#ffffff14;stroke-width:4}.sb-ring-fill{fill:none;stroke:#8b5cf6;stroke-width:4;stroke-linecap:round;transition:stroke-dashoffset .6s cubic-bezier(.4,0,.2,1),stroke .4s}.sb-tests-ring[data-tier=enthusiast] .sb-ring-fill{stroke:#8b5cf6}.sb-tests-ring[data-tier=prime] .sb-ring-fill{stroke:#06b6d4}.sb-tests-ring[data-tier=beast_mode] .sb-ring-fill{stroke:#10b981}.sb-tests-ring.sb-ring--warning .sb-ring-fill{stroke:#f59e0b!important}.sb-tests-ring.sb-ring--empty .sb-ring-fill{stroke:#ef4444!important}.sb-ring-label{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:0;pointer-events:none}#sb-ring-used{font-size:11px;font-weight:900;color:#f0f0ff;line-height:1}.sb-ring-sep{display:none}#sb-ring-max{font-size:8.5px;font-weight:700;color:#88a;line-height:1;margin-top:1px}.sb-tests-ring:after{content:attr(data-tooltip);position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%);background:#13131ff5;border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:5px 10px;font-size:11px;font-weight:700;color:#f0f0ff;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .15s;z-index:9999}.sb-tests-ring:hover:after{opacity:1}*,:before,:after{--tw-border-spacing-x: 0;--tw-border-spacing-y: 0;--tw-translate-x: 0;--tw-translate-y: 0;--tw-rotate: 0;--tw-skew-x: 0;--tw-skew-y: 0;--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-color: rgb(59 130 246 / .5);--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }::backdrop{--tw-border-spacing-x: 0;--tw-border-spacing-y: 0;--tw-translate-x: 0;--tw-translate-y: 0;--tw-rotate: 0;--tw-skew-x: 0;--tw-skew-y: 0;--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-color: rgb(59 130 246 / .5);--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }*,:before,:after{box-sizing:border-box;border-width:0;border-style:solid;border-color:#e5e7eb}:before,:after{--tw-content: ""}html,:host{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;-o-tab-size:4;tab-size:4;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent}body{margin:0;line-height:inherit}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-feature-settings:normal;font-variation-settings:normal;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}button,input,optgroup,select,textarea{font-family:inherit;font-feature-settings:inherit;font-variation-settings:inherit;font-size:100%;font-weight:inherit;line-height:inherit;letter-spacing:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,input:where([type=button]),input:where([type=reset]),input:where([type=submit]){-webkit-appearance:button;background-color:transparent;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dl,dd,h1,h2,h3,h4,h5,h6,hr,figure,p,pre{margin:0}fieldset{margin:0;padding:0}legend{padding:0}ol,ul,menu{list-style:none;margin:0;padding:0}dialog{padding:0}textarea{resize:vertical}input::-moz-placeholder,textarea::-moz-placeholder{opacity:1;color:#9ca3af}input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}button,[role=button]{cursor:pointer}:disabled{cursor:default}img,svg,video,canvas,audio,iframe,embed,object{display:block;vertical-align:middle}img,video{max-width:100%;height:auto}[hidden]:where(:not([hidden=until-found])){display:none}body{--tw-bg-opacity: 1;background-color:rgb(250 249 246 / var(--tw-bg-opacity, 1));font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;--tw-text-opacity: 1;color:rgb(58 58 58 / var(--tw-text-opacity, 1));-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-feature-settings:"cv11","ss01";min-height:100vh;background:radial-gradient(1200px 800px at 20% 10%,#fff6e8 10%,#faf9f6 55%) no-repeat,#faf9f6;margin:0;overflow-x:hidden}*{scroll-behavior:smooth;box-sizing:border-box;font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.\!container{width:100%!important}.container{width:100%}@media (min-width: 640px){.\!container{max-width:640px!important}.container{max-width:640px}}@media (min-width: 768px){.\!container{max-width:768px!important}.container{max-width:768px}}@media (min-width: 1024px){.\!container{max-width:1024px!important}.container{max-width:1024px}}@media (min-width: 1280px){.\!container{max-width:1280px!important}.container{max-width:1280px}}@media (min-width: 1536px){.\!container{max-width:1536px!important}.container{max-width:1536px}}.focus-visible-ring:focus-visible{outline:2px solid transparent;outline-offset:2px;--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(4px + var(--tw-ring-offset-width)) var(--tw-ring-color);box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow, 0 0 #0000);--tw-ring-color: rgb(247 199 219 / var(--tw-ring-opacity, 1));--tw-ring-opacity: .5}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.visible{visibility:visible}.static{position:static}.fixed{position:fixed}.absolute{position:absolute}.relative{position:relative}.sticky{position:sticky}.right-4{right:1rem}.top-20{top:5rem}.z-50{z-index:50}.col-span-2{grid-column:span 2 / span 2}.mx-auto{margin-left:auto;margin-right:auto}.mb-1{margin-bottom:.25rem}.mb-2{margin-bottom:.5rem}.mb-6{margin-bottom:1.5rem}.mb-8{margin-bottom:2rem}.mt-2{margin-top:.5rem}.mt-6{margin-top:1.5rem}.block{display:block}.inline{display:inline}.flex{display:flex}.table{display:table}.\!grid{display:grid!important}.grid{display:grid}.contents{display:contents}.h-12{height:3rem}.h-16{height:4rem}.h-40{height:10rem}.h-full{height:100%}.w-12{width:3rem}.w-16{width:4rem}.w-40{width:10rem}.w-full{width:100%}.max-w-2xl{max-width:42rem}.max-w-4xl{max-width:56rem}.max-w-xs{max-width:20rem}.flex-1{flex:1 1 0%}.translate-y-0{--tw-translate-y: 0px;transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.translate-y-8{--tw-translate-y: 2rem;transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.scale-110{--tw-scale-x: 1.1;--tw-scale-y: 1.1;transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.transform{transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}@keyframes pulse{50%{opacity:.5}}.animate-pulse{animation:pulse 2s cubic-bezier(.4,0,.6,1) infinite}.resize{resize:both}.items-center{align-items:center}.justify-start{justify-content:flex-start}.justify-end{justify-content:flex-end}.justify-center{justify-content:center}.gap-4{gap:1rem}.space-y-4>:not([hidden])~:not([hidden]){--tw-space-y-reverse: 0;margin-top:calc(1rem * calc(1 - var(--tw-space-y-reverse)));margin-bottom:calc(1rem * var(--tw-space-y-reverse))}.rounded-3xl{border-radius:1.5rem}.rounded-full{border-radius:9999px}.rounded-lg{border-radius:.5rem}.border{border-width:1px}.bg-background\/50{background-color:#faf9f680}.p-4{padding:1rem}.p-6{padding:1.5rem}.p-8{padding:2rem}.px-4{padding-left:1rem;padding-right:1rem}.px-6{padding-left:1.5rem;padding-right:1.5rem}.px-8{padding-left:2rem;padding-right:2rem}.py-2{padding-top:.5rem;padding-bottom:.5rem}.py-4{padding-top:1rem;padding-bottom:1rem}.text-center{text-align:center}.text-2xl{font-size:1.5rem;line-height:2rem}.text-3xl{font-size:1.875rem;line-height:2.25rem}.text-4xl{font-size:2.25rem;line-height:2.5rem}.text-5xl{font-size:3rem;line-height:1}.text-lg{font-size:1.125rem;line-height:1.75rem}.text-sm{font-size:.875rem;line-height:1.25rem}.text-xl{font-size:1.25rem;line-height:1.75rem}.text-xs{font-size:.75rem;line-height:1rem}.font-bold{font-weight:700}.text-text{--tw-text-opacity: 1;color:rgb(58 58 58 / var(--tw-text-opacity, 1))}.text-text\/50{color:#3a3a3a80}.text-text\/70{color:#3a3a3ab3}.opacity-0{opacity:0}.opacity-100{opacity:1}.outline{outline-style:solid}.\!ring{--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color) !important;--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color) !important;box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow, 0 0 #0000)!important}.ring{--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color);box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow, 0 0 #0000)}.blur{--tw-blur: blur(8px);filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.filter{filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.backdrop-filter{-webkit-backdrop-filter:var(--tw-backdrop-blur) var(--tw-backdrop-brightness) var(--tw-backdrop-contrast) var(--tw-backdrop-grayscale) var(--tw-backdrop-hue-rotate) var(--tw-backdrop-invert) var(--tw-backdrop-opacity) var(--tw-backdrop-saturate) var(--tw-backdrop-sepia);backdrop-filter:var(--tw-backdrop-blur) var(--tw-backdrop-brightness) var(--tw-backdrop-contrast) var(--tw-backdrop-grayscale) var(--tw-backdrop-hue-rotate) var(--tw-backdrop-invert) var(--tw-backdrop-opacity) var(--tw-backdrop-saturate) var(--tw-backdrop-sepia)}.transition{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,backdrop-filter;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-all{transition-property:all;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.duration-700{transition-duration:.7s}.clay-btn{position:relative;background:linear-gradient(135deg,#f7c7db,#e8b5d1);border-radius:24px;padding:16px 32px;font-weight:600;color:#3a3a3a;box-shadow:12px 12px 24px #f7c7db40,-12px -12px 24px #ffffffe6,inset 0 1px #fff9;transition:all .3s ease;border:none;cursor:pointer}.clay-btn:before{content:"";position:absolute;top:3px;right:3px;bottom:3px;left:3px;border-radius:20px;background:linear-gradient(135deg,#fff6,#ffffff1a);pointer-events:none}.clay-btn:hover{transform:translateY(-3px);box-shadow:16px 16px 32px #f7c7db4d,-16px -16px 32px #fff,inset 0 1px #fffc}.clay-btn:active{transform:translateY(1px);box-shadow:6px 6px 12px #f7c7db33,-6px -6px 12px #ffffffb3,inset 0 1px #fff6}.clay-btn-accent{background:linear-gradient(135deg,#b7e4d4,#a3d7c4);box-shadow:8px 8px 16px #b7e4d44d,-8px -8px 16px #fffc;position:relative;border-radius:9999px;padding:1rem 2.5rem;font-weight:600;color:#3a3a3a;transition:all .3s ease}.clay-btn-accent:before{content:"";position:absolute;top:2px;right:2px;bottom:2px;left:2px;border-radius:9999px;background:linear-gradient(135deg,#fff6,#ffffff1a);pointer-events:none}.clay-btn-accent:hover{transform:translateY(-2px);box-shadow:12px 12px 24px #b7e4d466,-12px -12px 24px #ffffffe6}.clay-btn-accent:active{transform:translateY(1px);box-shadow:4px 4px 8px #b7e4d433,-4px -4px 8px #fff9}.clay-card:before{content:"";position:absolute;top:1px;right:1px;bottom:1px;left:1px;border-radius:1.5rem;background:linear-gradient(135deg,#ffffff80,#fff0);pointer-events:none}.clay-card:hover{transform:translateY(-4px);box-shadow:16px 16px 32px #00000014,-16px -16px 32px #fff}.clay-card-primary{background:linear-gradient(135deg,#f7c7db,#f4bdd5);box-shadow:12px 12px 24px #f7c7db4d,-12px -12px 24px #fffc}.clay-card-accent{background:linear-gradient(135deg,#b7e4d4,#aedecb);box-shadow:12px 12px 24px #b7e4d44d,-12px -12px 24px #fffc}.clay-inset{box-shadow:inset 6px 6px 12px #00000014,inset -6px -6px 12px #ffffffe6}:root{--bg: #FAF9F6;--panel: #FFFFFF;--text: #3A3A3A;--muted: #60656d;--accent: #F7C7DB;--accent-2: #ffd6a8;--shadow: rgba(39, 37, 34, .12);--inner: rgba(255, 255, 255, .75);--radius-xl: 32px;--radius-lg: 24px;--radius-pill: 999px;--transition: .22s cubic-bezier(.2,.7,.2,1)}.nav-wrapper{display:flex;align-items:flex-start;position:relative;z-index:10}.nav-panel{position:relative;width:280px;padding:24px;border-radius:var(--radius-xl);background:linear-gradient(180deg,#fff,#fff 60%,#f7f4ee);box-shadow:0 20px 50px var(--shadow),inset 0 1px 0 var(--inner);outline:1px solid rgba(0,0,0,.02);z-index:10}.logo-container{display:flex;justify-content:center;margin-bottom:24px}.logo-image{width:80px;height:80px;border-radius:50%;-o-object-fit:cover;object-fit:cover;box-shadow:0 8px 20px #0000001a,inset 0 1px #fffc}.nav-list{list-style:none;margin:0;padding:8px;display:flex;flex-direction:column;gap:16px}.nav-item{position:relative;display:grid;grid-template-columns:44px 1fr;align-items:center;gap:16px;padding:16px 20px;border-radius:var(--radius-lg);cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;transition:transform var(--transition),box-shadow var(--transition),background var(--transition);color:var(--muted)}.nav-item .icon{width:36px;height:36px;display:grid;place-items:center}.nav-item svg{width:28px;height:28px}.nav-item .label{font-size:18px;font-weight:500;letter-spacing:.2px}.nav-item:hover{background:#fff;box-shadow:0 8px 24px #00000014,inset 0 1px #fff;color:var(--text);transform:translateY(-2px)}.nav-item:focus-visible{outline:3px solid rgba(247,199,219,.6);outline-offset:2px}.nav-item.active{color:var(--text);background:radial-gradient(120% 180% at 15% 0%,#fff7ee 10%,#fff 55%) #fff;box-shadow:0 12px 32px #f7c7db4d,inset 0 0 0 1px #fff,inset 0 -2px 8px #f7c7db40;transform:translateY(-2px)}.nav-item.active:before{content:"";position:absolute;top:-4px;right:-6px;bottom:-4px;left:-6px;border-radius:var(--radius-pill);background:radial-gradient(120px 60px at 20% 10%,var(--accent-2),transparent 60%);filter:blur(8px);z-index:-1}.nav-item.active .icon{color:var(--text)}.content{flex:1;padding:12px;position:relative;z-index:5;overflow-x:hidden}@media (max-width: 768px){body{grid-template-columns:1fr;grid-template-rows:auto 1fr;padding:16px}.nav-wrapper{order:2}.nav-panel{width:100%;max-width:100%;margin:0;padding:16px}.nav-list{flex-direction:row;gap:8px;overflow-x:auto;padding:8px 0}.nav-item{min-width:120px;flex-shrink:0;grid-template-columns:1fr;text-align:center;padding:12px 8px}.nav-item .label{font-size:14px;margin-top:4px}.content{order:1;padding:0}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}@keyframes pulse-glow{0%,to{box-shadow:0 0 20px #f7c7db66}50%{box-shadow:0 0 40px #f7c7dbcc}}@keyframes shimmer{0%{background-position:-1000px 0}to{background-position:1000px 0}}@keyframes bounce-subtle{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.animate-float{animation:float 6s ease-in-out infinite}.animate-pulse-glow{animation:pulse-glow 2s ease-in-out infinite}.animate-shimmer{background:linear-gradient(90deg,transparent,rgba(255,255,255,.8),transparent);background-size:1000px 100%;animation:shimmer 3s infinite}.animate-bounce-subtle{animation:bounce-subtle 2s ease-in-out infinite}.hover-lift{transition:transform .3s ease,box-shadow .3s ease}.hover-lift:hover{transform:translateY(-8px)}.chat-interface{height:100vh;display:flex;flex-direction:column;background:var(--bg);max-width:1200px;margin:0 auto}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 2rem;background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,0,0,.1);position:sticky;top:0;z-index:10}.back-btn{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:linear-gradient(135deg,#f7c7db,#e8b5d1);border:none;border-radius:2rem;color:var(--text);font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:8px 8px 16px #f7c7db4d,-8px -8px 16px #fffc}.back-btn:hover{transform:translateY(-2px);box-shadow:12px 12px 24px #f7c7db66,-12px -12px 24px #ffffffe6}#chat-subject-title{font-size:1.5rem;font-weight:700;color:var(--text);margin:0}.chat-controls{display:flex;gap:.5rem}.control-btn{width:3rem;height:3rem;border:none;border-radius:50%;background:linear-gradient(135deg,#f7c7db,#e8b5d1);color:var(--text);cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;box-shadow:6px 6px 12px #f7c7db4d,-6px -6px 12px #fffc}.control-btn:hover{transform:translateY(-2px);box-shadow:8px 8px 16px #f7c7db66,-8px -8px 16px #ffffffe6}.chat-messages{flex:1;overflow-y:auto;padding:2rem;display:flex;flex-direction:column;gap:1.5rem;scroll-behavior:smooth}.message{max-width:80%;animation:messageSlideIn .3s ease-out}.user-message{align-self:flex-end}.assistant-message{align-self:flex-start}.message-content{background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:1.5rem;padding:1rem 1.5rem;box-shadow:8px 8px 16px #00000014,-8px -8px 16px #fffc;position:relative}.user-message .message-content{background:linear-gradient(135deg,#f7c7db,#f4bdd5);color:var(--text)}.assistant-message .message-content{background:#fffffff2;color:var(--text)}.message-text{font-size:1rem;line-height:1.5;margin-bottom:.5rem}.message-time{font-size:.75rem;opacity:.6;text-align:right}.assistant-message .message-time{text-align:left}.chat-input-container{padding:1.5rem 2rem;background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid rgba(0,0,0,.1)}.input-wrapper{display:flex;align-items:flex-end;gap:1rem;background:#fffc;border-radius:2rem;padding:.5rem;box-shadow:inset 4px 4px 8px #0000000d,inset -4px -4px 8px #ffffffe6,8px 8px 16px #0000000f,-8px -8px 16px #fffc}#chat-input{flex:1;border:none;background:transparent;outline:none;resize:none;font-size:1rem;line-height:1.5;padding:1rem 1.5rem;max-height:120px;min-height:24px;font-family:inherit}#chat-input::-moz-placeholder{color:#3a3a3a80}#chat-input::placeholder{color:#3a3a3a80}.input-controls{display:flex;gap:.5rem;align-items:center}.voice-btn,.send-btn{width:3rem;height:3rem;border:none;border-radius:50%;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center}.voice-btn{background:linear-gradient(135deg,#b7e4d4,#aedecb);box-shadow:6px 6px 12px #b7e4d44d,-6px -6px 12px #fffc}.voice-btn.recording{background:linear-gradient(135deg,#ffb3ba,#ff9aa2);animation:pulse 1s infinite}.send-btn{background:linear-gradient(135deg,#f7c7db,#e8b5d1);box-shadow:6px 6px 12px #f7c7db4d,-6px -6px 12px #fffc}.voice-btn:hover,.send-btn:hover{transform:translateY(-2px)}.voice-status{margin-top:1rem;text-align:center}.recording-indicator{display:flex;align-items:center;justify-content:center;gap:.5rem;color:#ff6b6b;font-weight:600}.pulse{width:12px;height:12px;background:#ff6b6b;border-radius:50%;animation:pulse 1s infinite}.typing-indicator{opacity:.7}.typing-dots{display:flex;gap:4px;align-items:center}.typing-dots span{width:8px;height:8px;background:#999;border-radius:50%;animation:typingDot 1.4s infinite ease-in-out}.typing-dots span:nth-child(1){animation-delay:-.32s}.typing-dots span:nth-child(2){animation-delay:-.16s}.hidden{display:none!important}@keyframes messageSlideIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.7;transform:scale(1.05)}}@keyframes typingDot{0%,80%,to{transform:scale(.8);opacity:.5}40%{transform:scale(1);opacity:1}}.chat-page-container{display:grid;grid-template-columns:300px 1fr 280px;height:100vh;background:linear-gradient(135deg,#f0f8ff,#e6f3ff);gap:0}.left-panel{background:linear-gradient(135deg,#f7c7db,#f4bdd5);padding:2rem 1.5rem;display:flex;flex-direction:column;gap:2rem;box-shadow:4px 0 20px #0000001a}.subject-header{display:flex;align-items:center;gap:1rem}.subject-icon{font-size:2.5rem;background:#ffffff4d;width:4rem;height:4rem;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:inset 2px 2px 8px #0000001a}.subject-info h2{font-size:1.5rem;font-weight:700;color:var(--text);margin:0}.subject-info p{font-size:1rem;color:var(--text);opacity:.8;margin:.25rem 0 0}.timer-section h3{font-size:1rem;color:var(--text);margin:0 0 1rem;font-weight:600}.timer-circle{position:relative;width:120px;height:120px;margin:0 auto}.timer-segments{position:absolute;width:100%;height:100%;border-radius:50%;background:conic-gradient(#ff6b9d,#ff6b9d 90deg,#ffb347 90deg,#ffb347 180deg,#4ecdc4 180deg,#4ecdc4 270deg,#a8e6cf 270deg,#a8e6cf 360deg);padding:8px}.timer-segments:before{content:"";position:absolute;width:calc(100% - 16px);height:calc(100% - 16px);background:#ffffffe6;border-radius:50%;top:8px;left:8px}.timer-display{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:1.5rem;font-weight:700;color:var(--text)}.action-buttons{display:flex;flex-direction:column;gap:1rem}.hint-btn,.complete-btn,.timer-control-btn{padding:1rem 1.5rem;border:none;border-radius:1.5rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:6px 6px 12px #0000001a,-6px -6px 12px #fffc}.hint-btn{background:linear-gradient(135deg,#f7c7db,#f4bdd5);color:var(--text)}.complete-btn{background:linear-gradient(135deg,#87ceeb,#b0e0e6);color:var(--text)}.timer-control-btn{background:linear-gradient(135deg,#ffb347,#ff8c42);color:var(--text)}.timer-control-btn.start{background:linear-gradient(135deg,#4ecdc4,#44a08d)}.timer-control-btn.stop{background:linear-gradient(135deg,#ff6b6b,#ff5252)}.hint-btn:hover,.complete-btn:hover,.timer-control-btn:hover{transform:translateY(-2px);box-shadow:8px 8px 16px #00000026,-8px -8px 16px #ffffffe6}.middle-panel{background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;flex-direction:column;position:relative;overflow:hidden}.chat-header{padding:2rem 2rem 1rem;border-bottom:1px solid rgba(0,0,0,.1)}.chat-header h1{font-size:1.5rem;font-weight:700;color:var(--text);margin:0}.chat-messages-container{flex:1;padding:2rem;overflow-y:auto;display:flex;flex-direction:column;gap:1.5rem}.chat-message{max-width:70%;animation:messageSlideIn .3s ease-out}.chat-message.user{align-self:flex-end}.chat-message.assistant{align-self:flex-start}.chat-message-content{background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:1.5rem;padding:1rem 1.5rem;box-shadow:8px 8px 16px #00000014,-8px -8px 16px #fffc}.chat-message.user .chat-message-content{background:linear-gradient(135deg,#f7c7db,#f4bdd5);color:var(--text)}.chat-input-area{padding:1.5rem 2rem;border-top:1px solid rgba(0,0,0,.1)}.input-container{display:flex;gap:1rem;align-items:center;background:#fffc;border-radius:2rem;padding:.5rem;box-shadow:inset 4px 4px 8px #0000000d,inset -4px -4px 8px #ffffffe6}#chat-input-field{flex:1;border:none;background:transparent;outline:none;font-size:1rem;padding:1rem 1.5rem;font-family:inherit}#chat-input-field::-moz-placeholder{color:#3a3a3a80}#chat-input-field::placeholder{color:#3a3a3a80}.send-button{width:3rem;height:3rem;border:none;border-radius:50%;background:linear-gradient(135deg,#f7c7db,#e8b5d1);color:var(--text);cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:6px 6px 12px #f7c7db4d,-6px -6px 12px #fffc}.send-button:hover{transform:translateY(-2px)}.voice-button{width:3rem;height:3rem;border:none;border-radius:50%;background:linear-gradient(135deg,#4ecdc4,#44a08d);color:#fff;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:6px 6px 12px #4ecdc44d,-6px -6px 12px #fffc}.voice-button:hover{transform:translateY(-2px)}.voice-button.recording{background:linear-gradient(135deg,#ff6b6b,#ff5252);animation:pulse 1s infinite}.ai-character{position:absolute;bottom:2rem;right:2rem;z-index:10}.character-avatar{width:80px;height:80px;position:relative;animation:characterFloat 3s ease-in-out infinite}.character-face{width:60px;height:60px;background:#ffe4b5;border-radius:50%;position:relative;box-shadow:4px 4px 8px #0000001a,-4px -4px 8px #fffc}.eyes{position:absolute;top:18px;left:50%;transform:translate(-50%);display:flex;gap:8px}.eye{width:6px;height:6px;background:#333;border-radius:50%}.mouth{position:absolute;bottom:15px;left:50%;transform:translate(-50%);width:12px;height:6px;border:2px solid #333;border-top:none;border-radius:0 0 12px 12px}.character-hair{position:absolute;top:-10px;left:50%;transform:translate(-50%);width:70px;height:25px;background:#8b4513;border-radius:50% 50% 30% 30%}.character-sprout{position:absolute;top:-5px;left:50%;transform:translate(-50%);width:8px;height:15px;background:#4caf50;border-radius:50% 50% 0 0}.character-body{position:absolute;top:50px;left:50%;transform:translate(-50%);width:50px;height:40px;background:#87ceeb;border-radius:20px 20px 0 0}.right-panel{background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:2rem 1.5rem;display:flex;flex-direction:column;gap:2rem;box-shadow:-4px 0 20px #0000001a}.user-profile{display:flex;align-items:center;gap:1rem}.user-avatar{width:4rem;height:4rem;position:relative}.avatar-face{width:100%;height:100%;background:#ffe4b5;border-radius:50%;position:relative;box-shadow:4px 4px 8px #0000001a,-4px -4px 8px #fffc}.avatar-eyes{position:absolute;top:30%;left:50%;transform:translate(-50%);display:flex;gap:6px}.avatar-eye{width:4px;height:4px;background:#333;border-radius:50%}.avatar-smile{position:absolute;bottom:25%;left:50%;transform:translate(-50%);width:8px;height:4px;border:1px solid #333;border-top:none;border-radius:0 0 8px 8px}.avatar-hair{position:absolute;top:-8px;left:50%;transform:translate(-50%);width:100%;height:20px;background:#8b4513;border-radius:50% 50% 30% 30%}.user-info h3{font-size:1.25rem;font-weight:700;color:var(--text);margin:0}.user-info p{font-size:.9rem;color:var(--text);opacity:.8;margin:.25rem 0 0}.progress-section{background:#fff9;border-radius:1rem;padding:1.5rem;box-shadow:inset 2px 2px 8px #0000000d,inset -2px -2px 8px #ffffffe6}.progress-info{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem}.progress-label{font-weight:600;color:var(--text)}.progress-icon{font-size:1.2rem}.progress-fill{height:100%;background:linear-gradient(90deg,#4ecdc4,#44a08d);border-radius:4px;transition:width .3s ease}.recommendations h4{font-size:1rem;font-weight:600;color:var(--text);margin:0 0 1rem}.recommendation-btn{width:100%;padding:1rem;border:none;border-radius:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem;box-shadow:4px 4px 8px #0000001a,-4px -4px 8px #fffc}.recommendation-btn.primary,.recommendation-btn.secondary{background:linear-gradient(135deg,#f7c7db,#f4bdd5);color:var(--text)}.recommendation-btn.tertiary{background:linear-gradient(135deg,#b7e4d4,#aedecb);color:var(--text)}.recommendation-btn:hover{transform:translateY(-2px);box-shadow:6px 6px 12px #00000026,-6px -6px 12px #ffffffe6}.btn-icon{font-size:1.2rem}@keyframes characterFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@media (max-width: 768px){.chat-page-container{grid-template-columns:1fr;grid-template-rows:auto 1fr auto}.left-panel,.right-panel,.chat-messages-container,.chat-input-area{padding:1rem}.chat-message{max-width:90%}.ai-character{bottom:1rem;right:1rem}.character-avatar{width:60px;height:60px}}@media (max-width: 1024px){.chat-page-container{grid-template-columns:250px 1fr 200px}.left-panel,.right-panel{padding:1.5rem 1rem}}.quiz-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);z-index:9999;display:flex;align-items:center;justify-content:center;padding:1rem}.quiz-modal{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:2rem;box-shadow:20px 20px 40px #0000001a,-20px -20px 40px #fffc;max-width:600px;width:100%;max-height:90vh;overflow-y:auto;animation:modalSlideIn .3s ease-out;position:relative;z-index:10000}@keyframes modalSlideIn{0%{opacity:0;transform:translateY(-20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:2rem 2rem 1rem;border-bottom:1px solid rgba(0,0,0,.1)}.modal-header h2{font-size:1.5rem;font-weight:700;color:var(--text);margin:0}.close-btn{width:2.5rem;height:2.5rem;border:none;border-radius:50%;background:linear-gradient(135deg,#f7c7db,#e8b5d1);color:var(--text);font-size:1.2rem;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;box-shadow:4px 4px 8px #0000001a,-4px -4px 8px #fffc}.close-btn:hover{transform:translateY(-2px)}.modal-content{padding:2rem}.topic-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.topic-card{background:#fffc;border-radius:1.5rem;padding:2rem;text-align:center;cursor:pointer;transition:all .3s ease;box-shadow:8px 8px 16px #00000014,-8px -8px 16px #fffc;border:2px solid transparent}.topic-card:hover{transform:translateY(-5px);box-shadow:12px 12px 24px #0000001f,-12px -12px 24px #ffffffe6;border-color:#f7c7db80}.topic-card.custom-topic{background:linear-gradient(135deg,#b7e4d4,#aedecb)}.topic-icon{font-size:3rem;margin-bottom:1rem}.topic-card h3{font-size:1.2rem;font-weight:600;color:var(--text);margin:0 0 .5rem}.topic-card p{font-size:.9rem;color:var(--text);opacity:.7;margin:0}.input-group{display:flex;gap:1rem;margin-bottom:1rem}.topic-input{flex:1;padding:1rem 1.5rem;border:none;border-radius:1.5rem;background:#fffc;font-size:1rem;outline:none;box-shadow:inset 4px 4px 8px #0000000d,inset -4px -4px 8px #ffffffe6}.topic-input::-moz-placeholder{color:#3a3a3a80}.topic-input::placeholder{color:#3a3a3a80}.start-btn{padding:1rem 2rem;border:none;border-radius:1.5rem;background:linear-gradient(135deg,#f7c7db,#e8b5d1);color:var(--text);font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:6px 6px 12px #f7c7db4d,-6px -6px 12px #fffc}.start-btn:hover{transform:translateY(-2px)}.help-text{text-align:center;color:var(--text);opacity:.7;font-size:.9rem;margin:0}.progress-info{flex:1;margin-right:2rem}.question-counter{font-size:1rem;font-weight:600;color:var(--text);margin-bottom:.5rem;display:block}.progress-bar{width:100%;height:8px;background:#0000001a;border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,#f7c7db,#e8b5d1);border-radius:4px;transition:width .3s ease}.question-card{text-align:center}.question-text{font-size:1.4rem;font-weight:600;color:var(--text);margin:0 0 2rem;line-height:1.4}.options-container{display:grid;gap:1rem;margin-bottom:2rem}.option-btn{display:flex;align-items:center;gap:1rem;padding:1.5rem;border:none;border-radius:1.5rem;background:#fffc;cursor:pointer;transition:all .3s ease;text-align:left;box-shadow:6px 6px 12px #00000014,-6px -6px 12px #fffc;position:relative;z-index:10001;pointer-events:auto}.option-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:8px 8px 16px #0000001f,-8px -8px 16px #ffffffe6}.option-btn.selected{background:linear-gradient(135deg,#f7c7db,#e8b5d1);box-shadow:8px 8px 16px #f7c7db4d,-8px -8px 16px #ffffffe6}.option-btn.correct{background:linear-gradient(135deg,#b7e4d4,#aedecb)}.option-btn.incorrect{background:linear-gradient(135deg,#ffb3ba,#ff9aa2)}.option-btn:disabled{cursor:not-allowed;opacity:.7}.option-letter{width:2.5rem;height:2.5rem;border-radius:50%;background:#ffffffe6;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1.1rem;color:var(--text);flex-shrink:0}.option-text{font-size:1.1rem;color:var(--text);flex:1}.submit-btn{padding:1rem 2rem;border:none;border-radius:1.5rem;background:linear-gradient(135deg,#87ceeb,#b0e0e6);color:var(--text);font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:6px 6px 12px #87ceeb4d,-6px -6px 12px #fffc;position:relative;z-index:10001;pointer-events:auto}.submit-btn:hover:not(:disabled){transform:translateY(-2px)}.submit-btn:disabled{opacity:.5;cursor:not-allowed}.feedback-card{margin-top:2rem;padding:2rem;border-radius:1.5rem;background:#ffffffe6;box-shadow:8px 8px 16px #00000014,-8px -8px 16px #fffc}.feedback-header{text-align:center;margin-bottom:1.5rem}.feedback-header.correct{color:#4caf50}.feedback-header.incorrect{color:#f44336}.feedback-icon{font-size:3rem;margin-bottom:.5rem}.feedback-header h3{font-size:1.5rem;font-weight:600;margin:0}.feedback-explanation{margin-bottom:1.5rem}.feedback-explanation p{font-size:1.1rem;color:var(--text);line-height:1.5;margin:0}.feedback-stats{text-align:center;margin-bottom:1.5rem}.feedback-stats span{font-size:1.1rem;font-weight:600;color:var(--text)}.next-btn{width:100%;padding:1rem 2rem;border:none;border-radius:1.5rem;background:linear-gradient(135deg,#f7c7db,#e8b5d1);color:var(--text);font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:6px 6px 12px #f7c7db4d,-6px -6px 12px #fffc}.next-btn:hover{transform:translateY(-2px)}.results-card{text-align:center}.score-display{margin-bottom:2rem}.score-circle{width:120px;height:120px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;margin:0 auto 1rem;box-shadow:8px 8px 16px #0000001a,-8px -8px 16px #fffc}.score-circle.excellent{background:linear-gradient(135deg,#b7e4d4,#aedecb)}.score-circle.good{background:linear-gradient(135deg,#87ceeb,#b0e0e6)}.score-circle.needs-improvement{background:linear-gradient(135deg,#ffb3ba,#ff9aa2)}.score-number{font-size:2.5rem;font-weight:700;color:var(--text)}.score-total{font-size:1.2rem;color:var(--text);opacity:.7}.score-percentage{font-size:1.5rem;font-weight:600;color:var(--text)}.stars-display{margin-bottom:2rem}.stars-display h3{font-size:1.3rem;color:var(--text);margin:0 0 1rem}.stars{font-size:2rem;margin-bottom:.5rem}.stars-display p{font-size:1.1rem;color:var(--text);margin:0}.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:2rem}.stat-item{padding:1rem;background:#fff9;border-radius:1rem;box-shadow:inset 2px 2px 8px #0000000d,inset -2px -2px 8px #ffffffe6}.stat-label{display:block;font-size:.9rem;color:var(--text);opacity:.7;margin-bottom:.25rem}.stat-value{display:block;font-size:1.1rem;font-weight:600;color:var(--text)}.weak-areas{margin-bottom:2rem;padding:1.5rem;background:#fff3cdcc;border-radius:1rem;text-align:left}.weak-areas h4{font-size:1.1rem;color:var(--text);margin:0 0 1rem}.weak-areas ul{margin:0;padding-left:1.5rem}.weak-areas li{color:var(--text);margin-bottom:.5rem}.results-actions{display:flex;gap:1rem}.retry-btn,.finish-btn{flex:1;padding:1rem 2rem;border:none;border-radius:1.5rem;font-weight:600;cursor:pointer;transition:all .3s ease}.retry-btn{background:linear-gradient(135deg,#87ceeb,#b0e0e6);color:var(--text);box-shadow:6px 6px 12px #87ceeb4d,-6px -6px 12px #fffc}.finish-btn{background:linear-gradient(135deg,#f7c7db,#e8b5d1);color:var(--text);box-shadow:6px 6px 12px #f7c7db4d,-6px -6px 12px #fffc}.retry-btn:hover,.finish-btn:hover{transform:translateY(-2px)}.loading-content{text-align:center;padding:3rem}.loading-spinner{width:60px;height:60px;border:4px solid rgba(247,199,219,.3);border-top:4px solid #F7C7DB;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 2rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-content h3{font-size:1.3rem;color:var(--text);margin:0}.loading-content p{font-size:1rem;color:var(--text);opacity:.7;margin:1rem 0 0}.error-content{text-align:center;padding:2rem}.error-icon{font-size:3rem;margin-bottom:1rem}.error-content h3{font-size:1.5rem;color:var(--text);margin:0 0 1rem}.error-content p{font-size:1.1rem;color:var(--text);margin:0 0 2rem}@media (max-width: 768px){.quiz-modal{margin:1rem;max-width:none;width:calc(100% - 2rem)}.modal-header,.modal-content{padding:1.5rem}.topic-grid{grid-template-columns:1fr;gap:1rem}.input-group{flex-direction:column}.question-text{font-size:1.2rem}.option-btn{padding:1rem}.stats-grid{grid-template-columns:1fr}.results-actions{flex-direction:column}}.focus\:outline-none:focus{outline:2px solid transparent;outline-offset:2px}.focus\:ring-2:focus{--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color);box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow, 0 0 #0000)}.focus\:ring-primary:focus{--tw-ring-opacity: 1;--tw-ring-color: rgb(247 199 219 / var(--tw-ring-opacity, 1))}@media (max-width: 900px){html{-webkit-tap-highlight-color:transparent}.quiz-overlay{align-items:flex-start!important;justify-content:flex-start!important;padding-top:max(8px,env(safe-area-inset-top))!important;padding-right:max(8px,env(safe-area-inset-right))!important;padding-bottom:max(8px,env(safe-area-inset-bottom))!important;padding-left:max(8px,env(safe-area-inset-left))!important;overflow-y:auto!important;-webkit-overflow-scrolling:touch;min-height:100dvh}.quiz-overlay.diff-selection-overlay{padding:8px!important;align-items:flex-start!important}#difficulty-selection-root{max-height:min(96dvh,calc(100vh - 16px))!important;border-radius:18px!important;margin:0 auto}.quiz-modal.question-modal .quiz-actions{padding-bottom:max(10px,env(safe-area-inset-bottom))!important}.mcq-options{grid-template-columns:1fr!important}#chapters-page .chapter-page{padding:14px!important;border-radius:16px!important}#chapters-page .chapter-page-title{font-size:1.25rem!important;line-height:1.25!important}#chapters-page .chapter-page-header{flex-wrap:wrap;gap:10px}#chapters-page .chapters-grid{grid-template-columns:1fr!important;gap:10px!important}#chapters-page .chapter-card-page{padding:14px!important}#chapters-page .topics-head h2,#chapters-page #topicsSectionTitle{font-size:1rem!important}#chapters-page .topic-card-page{padding:12px 14px!important}#chapters-page .topic-page-title{font-size:.98rem!important;line-height:1.35!important}#subjects-page .sb-folder-grid,#subjectsPageGrid{gap:10px!important}}@media (max-width: 520px){#difficulty-selection-root .difficulty-grid{grid-template-columns:1fr!important;gap:12px!important;padding:0 12px 20px!important}#difficulty-selection-root .diff-card{padding:18px 14px 16px!important;min-height:auto}#difficulty-selection-root .diff-orb{width:56px!important;height:56px!important}#difficulty-selection-root .diff-play-btn{min-height:44px;padding:10px 16px!important}#difficulty-selection-root .modal-header{padding:12px 14px!important}#difficulty-selection-root .header-title{font-size:1rem!important}#difficulty-selection-root .topic-banner{margin:0 12px 12px!important;padding:12px!important}#difficulty-selection-root .footer-hint{padding:0 12px 20px!important;font-size:11px!important}}@media (max-width: 600px){#subjects-page .subject-card-actions{flex-direction:column;align-items:stretch}#subjects-page .subject-card-actions .btn{width:100%;min-height:44px}}html.sb-mobile{-webkit-tap-highlight-color:transparent}.lesson-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10050;display:flex;align-items:center;justify-content:center;padding:16px;background:#060814d1;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);font-family:system-ui,-apple-system,sans-serif}.lesson-shell{width:min(920px,100%);max-height:min(92vh,880px);display:flex;flex-direction:column;border-radius:20px;border:1px solid rgba(255,255,255,.1);background:#0c1024f0;box-shadow:0 28px 80px #0000008c;overflow:hidden}.lesson-shell-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;border-bottom:1px solid rgba(255,255,255,.08)}.lesson-shell-head h2{margin:0;font-size:1rem;font-weight:700;color:#e8e8f0}.lesson-wait-body{padding:28px 22px 32px;text-align:center;color:#b8c0e8}.lesson-wait-spinner{width:48px;height:48px;margin:0 auto 20px;border-radius:50%;border:3px solid rgba(139,92,246,.25);border-top-color:#a78bfa;animation:lesson-spin .85s linear infinite}@keyframes lesson-spin{to{transform:rotate(360deg)}}.lesson-wait-tip{margin-top:16px;font-size:.88rem;line-height:1.5;color:#8b92b8}.lesson-player-body{flex:1;min-height:0;display:flex;flex-direction:column;padding:0 0 16px}.lesson-slide-viewport{flex:1;min-height:220px;padding:20px 22px 12px;overflow-y:auto}.lesson-slide-title{margin:0 0 12px;font-size:1.35rem;font-weight:800;color:#f4f4ff;line-height:1.25}.lesson-slide-meta{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:#8b5cf6;margin-bottom:14px}.lesson-slide-content{font-size:1.05rem;line-height:1.55;color:#d8def8;margin-bottom:14px}.lesson-slide-bullets{margin:0;padding-left:1.2rem;color:#d8def8;line-height:1.55}.lesson-slide-bullets li{margin-bottom:8px}.lesson-visual-hint{margin-top:12px;padding:10px 14px;border-radius:12px;background:#8b5cf61f;border:1px solid rgba(167,139,250,.25);font-size:.85rem;color:#c4b5fd}.lesson-visual-wrap{margin-top:14px;border-radius:14px;overflow:hidden;border:1px solid rgba(167,139,250,.22);background:#00000038;min-height:140px}.lesson-visual-loading{padding:28px 16px;text-align:center;font-size:.88rem;color:#a5b4fc}.lesson-visual-figure{margin:0}.lesson-visual-img{display:block;width:100%;max-height:min(42vh,360px);-o-object-fit:cover;object-fit:cover;background:#00000059}.lesson-visual-cap{padding:8px 12px 10px;font-size:.72rem;line-height:1.35;color:#9ca3c7;background:#00000040}.sb-saved-lessons-wrap{margin:10px 0 4px}.sb-saved-lessons-label{margin-bottom:8px!important}.sb-saved-lessons-list{display:flex;flex-wrap:wrap;gap:8px}.sb-saved-lesson-chip{padding:8px 12px;border-radius:12px;border:1px solid rgba(139,92,246,.35);background:#8b5cf61f;color:#ede9fe;font-size:.8rem;font-weight:600;cursor:pointer;transition:background .15s ease,transform .12s ease}.sb-saved-lesson-chip:hover{background:#8b5cf638;transform:translateY(-1px)}.lesson-speaker{margin-top:18px;padding:14px 16px;border-radius:14px;background:#00000047;border:1px solid rgba(255,255,255,.08);min-height:4.5em}.lesson-speaker-label{font-size:.68rem;font-weight:800;letter-spacing:.1em;color:#f6ac62;margin-bottom:8px}.lesson-speaker-text{font-size:.95rem;line-height:1.55;color:#eef0ff}.lesson-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 18px 0;border-top:1px solid rgba(255,255,255,.06)}.lesson-nav-dots{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;flex:1}.lesson-dot{width:8px;height:8px;border-radius:50%;background:#ffffff26;border:none;padding:0;cursor:pointer}.lesson-dot.is-active{background:linear-gradient(90deg,#8b5cf6,#ec4899);transform:scale(1.15)}.lesson-nav-btn{padding:10px 18px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:#ffffff0f;color:#e8e8f0;font-weight:600;cursor:pointer}.lesson-nav-btn:hover{border-color:#a78bfa73;background:#8b5cf626}.lesson-nav-btn:disabled{opacity:.35;cursor:not-allowed}.lesson-err{color:#fca5a5;font-size:.9rem;margin-top:12px}.lesson-close-x{background:#ffffff0f;border:1px solid rgba(255,255,255,.12);color:#aaa;width:38px;height:38px;border-radius:50%;cursor:pointer;font-size:1.1rem}.lesson-close-x:hover{color:#fff;border-color:#ef444459}.lesson-theory-banner-btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;margin:12px 0 8px;padding:12px 16px;border-radius:14px;border:1px solid rgba(139,92,246,.35);background:linear-gradient(135deg,#8b5cf62e,#ec48991a);color:#ede9fe;font-size:.92rem;font-weight:700;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease}.lesson-theory-banner-btn:hover{transform:translateY(-1px);box-shadow:0 8px 28px #8b5cf633}@media (max-width: 600px){.lesson-slide-title{font-size:1.15rem}}#leaderboard-page .lb-subnav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}#leaderboard-page .lb-tab{border:1px solid rgba(58,58,58,.15);background:#ffffff8c;border-radius:999px;padding:8px 16px;font-weight:600;cursor:pointer;color:#3a3a3a;transition:background .15s ease,border-color .15s ease}#leaderboard-page .lb-tab.is-active{background:linear-gradient(135deg,#f4bdd5,#e8b5d1);border-color:transparent}#leaderboard-page .lb-panel.hidden{display:none}#leaderboard-page .lb-table{border-radius:16px;overflow:hidden;border:1px solid rgba(58,58,58,.1);background:#ffffffa6}#leaderboard-page .lb-head{display:grid;grid-template-columns:64px 1fr 88px;gap:8px;padding:12px 14px;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:#3a3a3a8c;border-bottom:1px solid rgba(58,58,58,.08)}#leaderboard-page .lb-list{max-height:min(62vh,520px);overflow-y:auto}#leaderboard-page .lb-row{display:grid;grid-template-columns:64px 1fr 88px;gap:8px;align-items:center;padding:12px 14px;border-bottom:1px solid rgba(58,58,58,.06)}#leaderboard-page .lb-row:last-child{border-bottom:none}#leaderboard-page .lb-row--self{background:#f4bdd533}#leaderboard-page .lb-row--pulse{animation:lb-pulse 1s ease}@keyframes lb-pulse{0%,to{box-shadow:none}40%{box-shadow:0 0 0 3px #e8b5d1e6}}#leaderboard-page .lb-rank{font-weight:800;font-size:.95rem}#leaderboard-page .lb-user{display:flex;align-items:center;gap:10px;min-width:0}#leaderboard-page .lb-av{width:36px;height:36px;border-radius:50%;-o-object-fit:cover;object-fit:cover;flex-shrink:0}#leaderboard-page .lb-av--ph{display:flex;align-items:center;justify-content:center;background:#3a3a3a14;font-size:1rem}#leaderboard-page .lb-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#leaderboard-page .lb-score{font-weight:800;text-align:right;color:#b84d7a}#leaderboard-page .lb-gap{text-align:center;padding:10px;color:#3a3a3a59;letter-spacing:.2em}#leaderboard-page .lb-sticky{position:sticky;bottom:0;margin-top:12px;padding:12px 14px;border-radius:14px;background:#ffffffeb;border:1px solid rgba(58,58,58,.12);box-shadow:0 -4px 20px #3a3a3a0f}#leaderboard-page .lb-sticky.hidden{display:none}#leaderboard-page .lb-sticky-btn{width:100%;text-align:left;border:none;background:transparent;font:inherit;cursor:pointer;padding:0;color:#3a3a3a}#leaderboard-page .lb-sticky-btn:hover{color:#b84d7a}#leaderboard-page .lb-sticky-note,#leaderboard-page .lb-sticky-txt{font-size:.92rem;color:#3a3a3abf}#leaderboard-page .lb-muted{color:#3a3a3a8c;line-height:1.5}#leaderboard-page .lb-prize-card{padding:16px 18px;border-radius:14px;border:1px solid rgba(58,58,58,.1);background:#ffffffb3;margin-bottom:12px}#leaderboard-page .lb-prize-place{font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:#b84d7a;margin-bottom:6px}#leaderboard-page .lb-prize-title{margin:0 0 8px;font-size:1.05rem}#leaderboard-page .lb-prize-desc{margin:0;font-size:.92rem;color:#3a3a3ab8}#leaderboard-page .lb-info-block{margin-bottom:20px;padding:16px 18px;border-radius:14px;border:1px solid rgba(58,58,58,.08);background:#ffffff8c}#leaderboard-page .lb-info-block h3{margin:0 0 10px;font-size:1rem}#leaderboard-page .lb-info-block p{margin:0 0 10px;line-height:1.55;color:#3a3a3acc}#leaderboard-page .lb-info-block p:last-child{margin-bottom:0}#leaderboard-page .lb-info-you{padding-top:8px;border-top:1px dashed rgba(58,58,58,.12)}#leaderboard-page .lb-error-banner{margin-bottom:14px;padding:12px 14px;border-radius:12px;background:#ffc8c873;color:#7a1e1e;font-size:.92rem}:root{--bg: #0d0d14;--bg2: #13131f;--bg3: #1a1a2e;--card: rgba(255,255,255,.04);--card-hover: rgba(255,255,255,.07);--line: rgba(255,255,255,.08);--glass-bg: rgba(255,255,255,.04);--glass-bg-light: rgba(255,255,255,.07);--glass-border: rgba(255,255,255,.09);--glass-shadow: rgba(0,0,0,.45);--glass-blur: blur(20px);--border-glow: rgba(139,92,246,.4);--primary: #8b5cf6;--primary-light: #a78bfa;--accent: #06b6d4;--pink: #ec4899;--yellow: #f59e0b;--green: #10b981;--red: #ef4444;--cyan: #06b6d4;--orange: #f97316;--grad1: linear-gradient(135deg, #8b5cf6, #ec4899);--grad2: linear-gradient(135deg, #06b6d4, #8b5cf6);--grad3: linear-gradient(135deg, #10b981, #06b6d4);--ink: #f0f0ff;--muted: #8888aa;--text-faint: #4455aa;--radius: 14px;--shadow: 0 8px 32px rgba(0,0,0,.4);--glass-sun-light: rgba(139,92,246,.15)}html,html body{background:var(--bg)!important;background-image:none!important;background-color:var(--bg)!important;color:var(--ink)!important;font-family:Comfortaa,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif!important}body:before{display:none!important}h1,h2,h3,h4,h5{color:var(--ink)}p,span{color:inherit}.app{background:transparent!important;gap:12px!important;padding:12px!important}.side{background:var(--bg2)!important;backdrop-filter:blur(20px)!important;-webkit-backdrop-filter:blur(20px)!important;border:1px solid var(--glass-border)!important;border-radius:16px!important;box-shadow:0 8px 32px #00000059!important;padding:16px 12px!important}.brand{color:var(--ink)!important}.brand .logo{background:transparent!important;box-shadow:none!important}.brand span{color:var(--ink)!important}.nav-item{background:transparent!important;border:1px solid transparent!important;border-radius:10px!important;color:var(--muted)!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;box-shadow:none!important;font-size:.9rem!important;font-weight:500!important}.nav-item:hover{background:#ffffff0f!important;color:var(--ink)!important;border-color:transparent!important;box-shadow:none!important}.nav-item.is-active{background:#8b5cf626!important;border-color:#8b5cf64d!important;color:var(--primary-light)!important;box-shadow:none!important}.helper{background:#8b5cf614!important;border:1px solid rgba(139,92,246,.2)!important;border-style:solid!important;color:var(--muted)!important;-webkit-backdrop-filter:none!important;backdrop-filter:none!important;border-radius:10px!important}.main{background:var(--bg2)!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;border:1px solid var(--glass-border)!important;border-radius:16px!important;box-shadow:none!important;color:var(--ink)!important}.top{border-bottom:1px solid rgba(255,255,255,.06)!important;padding-bottom:14px!important;margin-bottom:20px!important}.subtitle{color:var(--muted)!important}.pill{background:#ffffff0f!important;border:1px solid rgba(255,255,255,.1)!important;backdrop-filter:blur(12px)!important;-webkit-backdrop-filter:blur(12px)!important;box-shadow:none!important;color:var(--ink)!important}.pill:hover{background:#ffffff17!important;border-color:var(--border-glow)!important}.pill.streak{background:#f973161f!important;border-color:#f9731640!important;color:var(--orange)!important;animation:pulse-orange 2s ease infinite}@keyframes pulse-orange{0%,to{box-shadow:0 0 #f9731600}50%{box-shadow:0 0 12px #f973164d}}.summary{gap:12px!important}.card{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;backdrop-filter:blur(20px)!important;-webkit-backdrop-filter:blur(20px)!important;box-shadow:none!important;border-radius:14px!important;color:var(--ink)!important;position:relative;overflow:hidden}.card:hover{background:#ffffff12!important;border-color:#8b5cf64d!important;box-shadow:0 0 28px #8b5cf61f!important;transform:translateY(-2px)!important}.card:after{display:none!important}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad1);opacity:0;transition:opacity .2s}.card:hover:before{opacity:1}.card .icon{background:#8b5cf626!important;border-radius:12px!important}.card h3{color:var(--ink)!important;font-size:.9rem!important}.card .big{color:var(--ink)!important;font-size:1.6rem!important;font-weight:800!important}.card p{color:var(--muted)!important}.tabs{gap:6px!important}.tab{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;color:var(--muted)!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;box-shadow:none!important;border-radius:20px!important;font-weight:500!important}.tab:hover{background:#ffffff12!important;color:var(--ink)!important}.tab.is-active{background:#8b5cf62e!important;border-color:#8b5cf666!important;color:var(--primary-light)!important;box-shadow:none!important}.seg{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;box-shadow:none!important}.seg-btn{color:var(--muted)!important}.seg-btn.is-active{background:#8b5cf633!important;color:var(--primary-light)!important;box-shadow:none!important}.subject{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;backdrop-filter:blur(20px)!important;-webkit-backdrop-filter:blur(20px)!important;box-shadow:none!important;border-radius:16px!important;color:var(--ink)!important;transition:all .25s!important;overflow:hidden;position:relative}.subject:hover{background:#ffffff12!important;border-color:#8b5cf659!important;box-shadow:0 0 28px #8b5cf626!important;transform:translateY(-2px)!important}.subject .progress{height:6px!important;background:#ffffff0f!important;border-radius:3px!important}.subject .bar{background:var(--grad1)!important;border-radius:3px!important}.subject .badge{background:#8b5cf61f!important;border:1px solid rgba(139,92,246,.25)!important;color:var(--primary-light)!important;-webkit-backdrop-filter:none!important;backdrop-filter:none!important}.subject .meta{color:var(--muted)!important}.subject .head h3,.subject-title,.subject h3{color:var(--ink)!important}.chapter-card,.chapter-item{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;border-radius:16px!important;color:var(--ink)!important;box-shadow:none!important;transition:all .25s!important;position:relative;overflow:hidden}.chapter-card:hover,.chapter-item:hover{background:#ffffff12!important;border-color:#8b5cf659!important;box-shadow:0 0 28px #8b5cf626!important;transform:translateY(-3px)!important}.topic-row,.topic-item{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;border-radius:12px!important;color:var(--ink)!important;transition:all .2s!important}.topic-row:hover,.topic-item:hover{background:#ffffff12!important;border-color:#8b5cf64d!important;transform:translate(4px)!important}.btn-primary,button.btn-primary{background:var(--grad1)!important;color:#fff!important;border:none!important;box-shadow:none!important;font-weight:600!important;transition:all .2s!important}.btn-primary:hover,button.btn-primary:hover{opacity:.87!important;transform:translateY(-1px)!important;box-shadow:0 6px 20px #8b5cf659!important}.btn-ghost,button.btn-ghost{background:#ffffff0f!important;border:1px solid rgba(255,255,255,.12)!important;color:var(--muted)!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;box-shadow:none!important}.btn-ghost:hover,button.btn-ghost:hover{background:#ffffff1a!important;color:var(--ink)!important;border-color:#fff3!important}.activity li{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.07)!important;-webkit-backdrop-filter:none!important;backdrop-filter:none!important;box-shadow:none!important;border-radius:10px!important;color:var(--muted)!important}.activity li:hover{background:#ffffff12!important;border-color:#ffffff1f!important;color:var(--ink)!important}.activity li span{color:var(--text-faint)!important}.badge-card{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;backdrop-filter:blur(16px)!important;-webkit-backdrop-filter:blur(16px)!important;box-shadow:none!important;border-radius:14px!important}.badge-card:hover{background:#ffffff12!important;border-color:#8b5cf64d!important}.badge-card h4{color:var(--ink)!important}.badge-card p{color:var(--muted)!important}.week .day,.day-cell,.week--compact .day{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;color:var(--muted)!important;border-radius:10px!important}.week .day.done,.day-cell.done,.week--compact .day.done{background:#10b9811a!important;border-color:#10b9814d!important;color:var(--green)!important}.week .day.today,.day-cell.today,.week--compact .day.today{background:#8b5cf626!important;border-color:#8b5cf666!important;color:var(--primary-light)!important}.recommendation,.recommendation-card,.recommend-item{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;border-radius:14px!important;-webkit-backdrop-filter:none!important;backdrop-filter:none!important;box-shadow:none!important;color:var(--ink)!important;transition:all .2s!important}.recommendation:hover,.recommendation-card:hover,.recommend-item:hover{background:#ffffff12!important;border-color:#8b5cf64d!important;transform:translate(4px)!important}.recommendation-btn,.recommend-btn{background:var(--grad1)!important;color:#fff!important;border:none!important;border-radius:8px!important;font-weight:600!important}.recommendation-btn:hover,.recommend-btn:hover{opacity:.85!important}.bar,.progress-fill,.progress-bar,[class*=progress] [class*=fill],[class*=progress] [class*=bar]{background:var(--grad1)!important}.milestone{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;box-shadow:none!important;border-radius:14px!important}.milestone h4{color:var(--ink)!important}.milestone p{color:var(--muted)!important}.heat-grid .cell{background:#ffffff0d!important;border:1px solid rgba(255,255,255,.06)!important}.heat-grid .cell.active{background:#8b5cf666!important;border-color:#8b5cf699!important}input:not([type=checkbox]):not([type=radio]),textarea,select{background:#ffffff0f!important;border:1px solid rgba(255,255,255,.12)!important;color:var(--ink)!important;border-radius:10px!important}input::-moz-placeholder,textarea::-moz-placeholder{color:var(--text-faint)!important}input::placeholder,textarea::placeholder{color:var(--text-faint)!important}input:focus,textarea:focus,select:focus{border-color:#8b5cf680!important;box-shadow:0 0 0 3px #8b5cf626!important;outline:none!important;background:#ffffff12!important}.bottom-nav{background:#0d0d14eb!important;border-top:1px solid rgba(255,255,255,.08)!important;backdrop-filter:blur(20px)!important;-webkit-backdrop-filter:blur(20px)!important}.bottom-nav-item{color:var(--muted)!important}.bottom-nav-item.is-active,.bottom-nav-item[data-active=true]{color:var(--primary-light)!important}.modal-overlay{background:#000000a6!important;backdrop-filter:blur(8px)!important;-webkit-backdrop-filter:blur(8px)!important}*{scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.12) transparent}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff1f;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#ffffff38}.section-head strong,.section-head h2,.section-head h3{color:var(--ink)!important}#vocab-session .vocab-card,.vocab-card{background:#ffffff0d!important;border:1px solid rgba(255,255,255,.1)!important;color:var(--ink)!important;border-radius:20px!important;box-shadow:0 8px 32px #0000004d!important}.vocab-btn-row .btn{background:#ffffff0f!important;border:1px solid rgba(255,255,255,.12)!important;color:var(--muted)!important}#vocab-know{background:#10b98126!important;border-color:#10b9814d!important;color:var(--green)!important}#vocab-dont{background:#ef44441f!important;border-color:#ef444440!important;color:var(--red)!important}.subject-progress-row{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;border-radius:12px!important;color:var(--ink)!important}#add-subject-btn,.add-subject-btn{background:#8b5cf61f!important;border:1px dashed rgba(139,92,246,.4)!important;color:var(--primary-light)!important;border-radius:14px!important}#add-subject-btn:hover,.add-subject-btn:hover{background:#8b5cf633!important;border-color:#8b5cf699!important}.muted,[class*=muted],[class*=dim]{color:var(--muted)!important}.quiz-overlay{background:#000000b8!important;backdrop-filter:blur(8px)!important;-webkit-backdrop-filter:blur(8px)!important}.quiz-modal,.question-modal,.difficulty-selection-modal,.topic-selection-modal,.loading-modal,.error-modal,.results-modal{background:#13131f!important;border:1px solid rgba(255,255,255,.1)!important;box-shadow:0 24px 80px #0009!important;border-radius:20px!important;color:var(--ink)!important}.modal-header{background:linear-gradient(135deg,#8b5cf640,#ec489926)!important;border-bottom:1px solid rgba(255,255,255,.08)!important;border-radius:20px 20px 0 0!important;color:var(--ink)!important}.modal-header h2,.modal-header h3{color:var(--ink)!important}.option-btn,.answer-btn,.matching-btn{background:#ffffff0d!important;border:1.5px solid rgba(255,255,255,.1)!important;color:var(--ink)!important;border-radius:14px!important;transition:all .18s!important}.option-btn:hover,.answer-btn:hover{background:#8b5cf61a!important;border-color:#8b5cf666!important;transform:translateY(-1px)!important}.option-btn.selected,.answer-btn.selected,.matching-btn.selected{background:#8b5cf62e!important;border-color:#8b5cf6!important;color:var(--primary-light)!important;box-shadow:0 0 16px #8b5cf633!important}.option-btn.correct,.answer-btn.correct{background:#10b98124!important;border-color:#10b981!important;color:#10b981!important}.option-btn.incorrect,.option-btn.wrong,.answer-btn.incorrect{background:#ef44441f!important;border-color:#ef4444!important;color:#ef4444!important}.option-letter{background:#ffffff12!important;border:1px solid rgba(255,255,255,.12)!important;color:var(--muted)!important;border-radius:8px!important;font-weight:700!important}.option-btn.selected .option-letter{background:#8b5cf6!important;border-color:#8b5cf6!important;color:#fff!important}.option-btn.correct .option-letter{background:#10b981!important;border-color:#10b981!important;color:#fff!important}.option-btn.incorrect .option-letter,.option-btn.wrong .option-letter{background:#ef4444!important;border-color:#ef4444!important;color:#fff!important}.progress-bar,.q-progress-fill,.quiz-progress-fill{background:var(--grad1)!important;box-shadow:0 0 10px #8b5cf680!important}.progress-track,.q-progress-track{background:#ffffff12!important}.question-text{color:var(--ink)!important}.check-btn,.next-btn,.submit-btn,.start-btn{background:var(--grad1)!important;color:#fff!important;border:none!important;border-radius:14px!important;font-weight:700!important;box-shadow:none!important;transition:all .2s!important}.check-btn:hover,.next-btn:hover,.submit-btn:hover,.start-btn:hover{opacity:.87!important;transform:translateY(-2px)!important;box-shadow:0 8px 24px #8b5cf659!important}.close-btn{background:#ffffff12!important;border:1px solid rgba(255,255,255,.12)!important;color:var(--muted)!important;border-radius:50%!important}.close-btn:hover{background:#ef444426!important;border-color:#ef44444d!important;color:var(--red)!important}.diff-badge{border-radius:20px!important;font-weight:600!important;font-size:.75rem!important;padding:4px 10px!important}.score-correct{color:var(--green)!important}.score-wrong{color:var(--red)!important}.feedback-card.correct{background:#10b98117!important;border:1px solid rgba(16,185,129,.25)!important}.feedback-card.incorrect{background:#ef444412!important;border:1px solid rgba(239,68,68,.2)!important}.fill-blank-inline-input{display:inline-block!important;width:auto!important;min-width:3.5ch!important;max-width:min(100%,42ch)!important;margin:0 4px!important;vertical-align:middle!important;padding:4px 12px!important;font-weight:600!important;line-height:1.35!important;background:#8b5cf624!important;border:1px solid rgba(167,139,250,.55)!important;color:var(--ink)!important;border-radius:999px!important;field-sizing:content}.fill-blank-inline-input:focus{border-color:#8b5cf6!important;box-shadow:0 0 0 3px #8b5cf626!important}.order-blank{display:inline-flex!important;width:-moz-fit-content!important;width:fit-content!important;max-width:100%!important;min-width:2.75ch!important;min-height:1.35em!important;height:auto!important;padding:3px 6px!important;margin:0 3px!important;vertical-align:middle!important;align-items:center!important;justify-content:center!important;background:#8b5cf614!important;border:1px dashed rgba(167,139,250,.55)!important;border-radius:999px!important;box-sizing:border-box!important}.order-blank.order-blank--filled{padding:2px 4px!important;min-width:0!important;background:#8b5cf629!important;border-style:solid!important;border-color:#a78bfad9!important}.order-blank.drag-over,.order-blank.is-over{background:#8b5cf633!important;border-color:#8b5cf6!important;box-shadow:0 0 0 2px #8b5cf640!important}.order-blank.filled{background:#8b5cf629!important;border-style:solid!important;border-color:#a78bfad9!important}.order-pool .order-token{background:#ffffff12!important;border:1px solid rgba(255,255,255,.14)!important;color:var(--ink)!important;border-radius:12px!important}.order-pool .order-token:hover{border-color:#8b5cf6!important;background:#8b5cf61f!important;color:var(--primary-light)!important}.order-blank .order-token{margin:0!important;padding:5px 12px!important;border-radius:999px!important;font-weight:600!important;background:#8b5cf638!important;border:1px solid rgba(167,139,250,.65)!important;color:#ede9fe!important;box-shadow:none!important}.order-token.used{opacity:.3!important}.order-pool{background:#ffffff08!important;border:1px solid rgba(255,255,255,.07)!important;border-radius:12px!important}.fill-blank-sentence,.order-sentence{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.09)!important;color:var(--ink)!important;border-radius:14px!important}.matching-btn.pair-c1{background:#8b5cf626!important;border-color:#8b5cf6!important;color:#a78bfa!important}.matching-btn.pair-c2{background:#06b6d426!important;border-color:#06b6d4!important;color:#67e8f9!important}.matching-btn.pair-c3{background:#10b98126!important;border-color:#10b981!important;color:#6ee7b7!important}.matching-btn.pair-c4{background:#f59e0b26!important;border-color:#f59e0b!important;color:#fcd34d!important}.difficulty-clay-modal .modal-header{background:linear-gradient(135deg,#8b5cf640,#ec489926)!important}.difficulty-btn,.difficulty-card{background:#ffffff0d!important;border:1.5px solid rgba(255,255,255,.1)!important;color:var(--ink)!important;border-radius:14px!important;transition:all .2s!important}.difficulty-btn:hover,.difficulty-card:hover{border-color:#8b5cf666!important;background:#8b5cf61a!important;transform:translateY(-2px)!important}.difficulty-btn.selected,.difficulty-card.selected{background:#8b5cf633!important;border-color:#8b5cf6!important}.results-modal,.results-card{background:#13131f!important;border:1px solid rgba(255,255,255,.1)!important}.results-modal:before,.results-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#8b5cf6,#ec4899,#f59e0b)}.retry-btn{background:#8b5cf626!important;border:1px solid rgba(139,92,246,.3)!important;color:var(--primary-light)!important}.finish-btn{background:#ffffff0f!important;border:1px solid rgba(255,255,255,.12)!important;color:var(--muted)!important}.loading-modal{background:#13131f!important}.loading-modal h3{color:var(--ink)!important}.loading-modal p{color:var(--muted)!important}.streaming-builder-modal .modal-header{background:linear-gradient(135deg,#8b5cf640,#ec489926)!important;border-radius:20px 20px 0 0!important}.streaming-typing-area{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.09)!important}.streaming-opt-skel{background:#ffffff0d!important;border-color:#ffffff14!important}.chapter-page-header,.subject-page-header{color:var(--ink)!important}.back-btn{background:#ffffff0f!important;border:1px solid rgba(255,255,255,.1)!important;color:var(--muted)!important;border-radius:10px!important}.back-btn:hover{background:#ffffff1a!important;color:var(--ink)!important}.split>*{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;border-radius:14px!important}.settings-section,.settings-card{background:#ffffff0a!important;border:1px solid rgba(255,255,255,.08)!important;border-radius:14px!important;color:var(--ink)!important}#add-subject-modal,.add-subject-modal{background:#13131f!important;border:1px solid rgba(255,255,255,.1)!important;border-radius:20px!important;color:var(--ink)!important}.main:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:600px;height:300px;background:radial-gradient(ellipse at center top,rgba(139,92,246,.08) 0%,transparent 65%);pointer-events:none;z-index:0}.status-badge.new{background:#8b5cf626;color:var(--primary-light);border:1px solid rgba(139,92,246,.3)}.status-badge.done,.status-badge.complete{background:#10b9811f;color:var(--green);border:1px solid rgba(16,185,129,.3)}.status-badge.locked{background:#ffffff0d;color:var(--muted);border:1px solid rgba(255,255,255,.1)}.quiz-overlay.quiz-overlay--loading{background:#000000f0!important}.quiz-overlay .quiz-modal.loading-modal.sb-book-loader-modal{background:transparent!important;box-shadow:none!important}.sb-book-loader__card{background:#13131feb!important;border:1px solid rgba(255,255,255,.1)!important;box-shadow:0 24px 64px #000000a6!important}.quiz-overlay .quiz-modal.question-modal,.quiz-overlay .quiz-modal.question-modal .modal-content{background:#13131f!important}.quiz-overlay .quiz-modal.question-modal .question-card,.quiz-overlay .quiz-modal.question-modal .matching-card,.quiz-overlay .quiz-modal.question-modal .fill-blank-card{background:#0d1226b8!important;border:1px solid rgba(255,255,255,.1)!important;box-shadow:none!important}.quiz-overlay .quiz-modal.question-modal .question-text,.quiz-overlay .quiz-modal.question-modal .fill-blank-sentence,.quiz-overlay .quiz-modal.question-modal .matching-hint{color:#e8e8f0!important}:root{--glass-bg: rgba(255, 255, 255, .35);--sun-light: rgba(255, 236, 180, .6);--shadow-color: rgba(93, 71, 119, .25);--accent-gradient: linear-gradient(135deg, #1ee3b3, #35a7ff);--text-main: #4a3a5a;--error: #e74c3c;--success: #27ae60}*{font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}body,html{margin:0;padding:0;height:100%;font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.main-scene{width:100%;height:100vh;background:url(/assets/frutiger_aero_bg-CRJ85WBt.png) no-repeat center center;background-size:cover;display:flex;justify-content:center;align-items:center;perspective:1500px;overflow:hidden}.auth-card{width:380px;padding:45px;border-radius:55px;background:var(--glass-bg);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.4);box-shadow:25px 25px 50px var(--shadow-color),inset 12px 12px 25px var(--sun-light),inset -12px -12px 25px #fff3;transition:transform .1s ease-out;text-align:center}.title{color:var(--text-main);font-size:1.8rem;margin-bottom:30px;font-weight:800;font-family:Comfortaa,sans-serif}.desc{color:var(--text-main);font-size:.9rem;margin-bottom:20px;opacity:.8;font-family:Comfortaa,sans-serif}.tabs{display:flex;background:#0000000d;padding:6px;border-radius:25px;margin-bottom:35px;box-shadow:inset 2px 2px 5px #0000001a}.tab{flex:1;border:none;padding:10px;border-radius:20px;background:transparent;cursor:pointer;font-weight:700;color:var(--text-main);transition:.3s;font-family:Comfortaa,sans-serif}.tab.active{background:#fff;box-shadow:0 4px 10px #0000001a}.input-wrap{margin-bottom:18px;position:relative}input{width:100%;padding:16px 22px;border:none;border-radius:22px;background:#ffffff80;box-sizing:border-box;outline:none;color:var(--text-main);font-weight:600;font-family:Comfortaa,sans-serif;box-shadow:inset 4px 4px 8px #0000000d,inset -4px -4px 8px #ffffff80}input:focus{background:#fffc}input::-moz-placeholder{color:#4a3a5a80;font-family:Comfortaa,sans-serif}input::placeholder{color:#4a3a5a80;font-family:Comfortaa,sans-serif}.submit-btn{width:100%;padding:16px;border:none;border-radius:25px;background:var(--accent-gradient);color:#fff;font-weight:800;font-size:1rem;font-family:Comfortaa,sans-serif;cursor:pointer;box-shadow:0 10px 20px #9d81ba66;transition:.3s;margin-top:10px}.submit-btn:hover{transform:translateY(-2px);box-shadow:0 15px 25px #9d81ba80}.submit-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.link-text{margin-top:20px;font-size:.85rem;color:var(--text-main);font-family:Comfortaa,sans-serif;cursor:pointer;opacity:.7;transition:.2s}.link-text:hover{opacity:1}.hidden{display:none}.form-body{animation:fadeIn .4s ease}.progress-bar{height:5px;background:#0000001a;border-radius:10px;margin-top:8px;overflow:hidden}#strengthBar{height:100%;width:0;background:#9d81ba;transition:.4s;border-radius:10px}.auth-message{padding:12px 20px;border-radius:15px;margin-bottom:20px;font-family:Comfortaa,sans-serif;font-size:14px;text-align:center;animation:slideDown .3s ease}.auth-message.hidden{display:none}.auth-message.error{background-color:#e74c3c33;color:var(--error);border:1px solid rgba(231,76,60,.4);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.auth-message.success{background-color:#27ae6033;color:var(--success);border:1px solid rgba(39,174,96,.4);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 480px){.auth-card{width:90%;padding:30px 20px;border-radius:35px}.title{font-size:1.5rem}}body.sb-auth-page .main-scene .auth-card{width:min(380px,92vw)!important;max-width:420px!important;padding:45px!important;border-radius:55px!important;box-sizing:border-box!important}@media (max-width: 480px){body.sb-auth-page .main-scene .auth-card{width:90%!important;padding:30px 20px!important;border-radius:35px!important}body.sb-auth-page .main-scene .title{font-size:1.5rem!important}}body.sb-auth-page .main-scene .submit-btn{background:linear-gradient(135deg,#1ee3b3,#35a7ff)!important;color:#fff!important;border:none!important;border-radius:25px!important;font-weight:800!important;font-size:1rem!important;padding:16px!important;box-shadow:0 10px 20px #1ee3b347!important;width:100%!important;cursor:pointer!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important}body.sb-auth-page .main-scene .submit-btn:hover:not(:disabled){transform:translateY(-2px)!important;box-shadow:0 15px 25px #35a7ff59!important;opacity:1!important}body.sb-auth-page .main-scene .submit-btn:disabled{opacity:.6!important;cursor:not-allowed!important;transform:none!important}:root{--chat-ink: #243040;--chat-muted: #6c7a88;--chat-line: #ecf0f4;--chat-radius: 22px;--glass-bg: rgba(255, 255, 255, .35);--glass-border: rgba(255, 255, 255, .4);--glass-shadow: 25px 25px 50px rgba(93, 71, 119, .25);--glass-inset: inset 12px 12px 25px rgba(255, 236, 180, .6), inset -12px -12px 25px rgba(255, 255, 255, .2);--glass-blur: 18px}.chat-page{height:100vh;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:18px;padding:18px;background:radial-gradient(1200px 700px at -10% -10%,#ffd6e3 0%,transparent 40%),radial-gradient(900px 600px at 110% 0%,#cfd1ff 0%,transparent 45%),radial-gradient(800px 500px at 120% 120%,#ffe6a6 0%,transparent 50%),#faf6ff;color:var(--chat-ink);font-family:Comfortaa,ui-rounded,SF Pro Rounded,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.chat-page .back-link{position:absolute;top:18px;left:18px;z-index:100;color:var(--chat-muted);text-decoration:none;font-size:1.1rem;display:flex;align-items:center;gap:4px}.chat-page .back-link:hover{color:var(--chat-ink)}.chat-wrap{display:grid;grid-template-rows:auto 1fr auto;gap:14px;min-width:0;position:relative}.chat-top{padding:14px 18px;border-radius:var(--chat-radius);background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);box-shadow:var(--glass-shadow),var(--glass-inset)}.chat-top .topic{display:flex;align-items:center;gap:10px}.chat-top .topic h1{margin:0;font-size:1.25rem;font-weight:700}.chat-top .crumbs{color:var(--chat-muted);font-size:.9rem;margin-top:6px}.bubble-dot{width:10px;height:10px;border-radius:50%;background:#7c83ff;box-shadow:0 0 0 6px #7c83ff26}.chat{padding:16px;overflow:auto;min-height:0;border-radius:var(--chat-radius);background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);box-shadow:var(--glass-shadow),var(--glass-inset)}.msg{display:flex;align-items:flex-start;gap:10px;margin:10px 0}.msg .avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#ffffff80;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--glass-border)}.bubble{max-width:min(700px,72%);padding:12px 14px;border-radius:18px;background:#fff6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--glass-border);box-shadow:8px 8px 18px #1b273514}.msg.me{justify-content:flex-end}.msg.me .bubble{background:#ffffff80}.msg.me .avatar{order:2}.composer{display:flex;align-items:center;gap:10px;padding:12px;border-radius:var(--chat-radius);background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);box-shadow:var(--glass-shadow),var(--glass-inset)}.composer .input{flex:1;border:0;outline:none;font:inherit;padding:14px 18px;border-radius:16px;background:#fff6;border:1px solid var(--glass-border)}.composer .input::-moz-placeholder{color:var(--chat-muted)}.composer .input::placeholder{color:var(--chat-muted)}.composer .send{border:0;border-radius:14px;padding:14px 20px;cursor:pointer;font-weight:700;color:#fff;background:linear-gradient(135deg,#7c83ff,#9d81ba);box-shadow:0 4px 14px #7c83ff59;flex-shrink:0}.composer .send:hover{opacity:.95;transform:translateY(-1px)}.rail-right{display:grid;align-content:start;gap:14px}.progress{padding:18px;border-radius:var(--chat-radius);background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);box-shadow:var(--glass-shadow),var(--glass-inset)}.progress .head{font-weight:700;margin:0 0 10px;font-size:1rem}.progress .bar{height:14px;border-radius:999px;background:#fff6;overflow:hidden;border:1px solid var(--glass-border)}.progress .bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#7c83ff,#9d81ba);transition:width .3s ease}.progress .muted.small{margin:8px 0 0;font-size:.9rem;color:var(--chat-muted)}.quiz-block{padding:18px;border-radius:var(--chat-radius);background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);box-shadow:var(--glass-shadow),var(--glass-inset)}.quiz-block .quiz-title{font-weight:700;margin:0 0 4px;font-size:1rem}.quiz-block .quiz-sub{font-size:.9rem;color:var(--chat-muted);margin:0 0 14px}.quiz-block .btn.quiz{width:100%;padding:14px 20px;border-radius:16px;border:0;cursor:pointer;font-weight:700;font-size:1rem;background:linear-gradient(135deg,#ffb8c6e6,#ffd673e6);color:var(--chat-ink);box-shadow:0 4px 14px #5d477733;transition:transform .2s,box-shadow .2s}.quiz-block .btn.quiz:hover{transform:translateY(-2px);box-shadow:0 6px 20px #5d477740}.toast{position:fixed;left:50%;bottom:18px;transform:translate(-50%) translateY(20px);background:#111111d9;color:#fff;padding:10px 14px;border-radius:14px;opacity:0;pointer-events:none;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.toast.show{animation:toast .9s ease}@keyframes toast{0%{opacity:0;transform:translate(-50%) translateY(20px)}15%,85%{opacity:1;transform:translate(-50%) translateY(0)}to{opacity:0;transform:translate(-50%) translateY(10px)}}@media (max-width: 900px){.chat-page{grid-template-columns:1fr;grid-template-rows:auto 1fr}.rail-right{order:-1;grid-template-columns:1fr auto;align-items:start}.progress,.quiz-block{min-width:0}}@media (max-width: 600px){.rail-right{grid-template-columns:1fr}}:root{--glass-bg: rgba(255, 255, 255, .35);--sun-light: rgba(255, 255, 255, 0);--shadow-color: rgba(0, 0, 0, .16);--accent-gradient: linear-gradient(135deg, #f8ad9d, #9d81ba);--text-main: #4a3a5a;--error: #e74c3c;--success: #27ae60;--v-radius: 55px;--v-radius-inner: 22px;--v-blur: 18px}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Comfortaa,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.vocab-page{min-height:100vh;padding:72px 20px 40px;color:var(--text-main);background-color:#1a1525;background-image:linear-gradient(#1612266b,#16122661),url(/vocabulary-bg-pc.jpg);background-size:cover;background-position:center;background-attachment:fixed;background-repeat:no-repeat}.vocab-page .back-link{position:fixed;top:18px;left:18px;z-index:50;display:inline-flex;align-items:center;padding:10px 18px;border-radius:25px;text-decoration:none;font-size:.95rem;font-weight:700;color:var(--text-main);background:var(--glass-bg);backdrop-filter:blur(var(--v-blur));-webkit-backdrop-filter:blur(var(--v-blur));border:1px solid rgba(255,255,255,.4);box-shadow:12px 12px 28px var(--shadow-color),inset 6px 6px 14px var(--sun-light),inset -6px -6px 14px #fff3;transition:transform .15s ease,box-shadow .15s ease}.vocab-page .back-link:hover{transform:translateY(-1px);box-shadow:16px 16px 36px var(--shadow-color),inset 6px 6px 14px var(--sun-light),inset -6px -6px 14px #ffffff40}.vocab-wrap{max-width:420px;margin:0 auto}.vocab-card{border-radius:var(--v-radius);padding:2rem 1.75rem;background:var(--glass-bg);backdrop-filter:blur(var(--v-blur));-webkit-backdrop-filter:blur(var(--v-blur));border:1px solid rgba(255,255,255,.4);box-shadow:0 10px 30px var(--shadow-color);margin-bottom:1rem}.vocab-card--session{background:transparent;border:none;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;padding:0}.vocab-card h1{margin:0 0 .35rem;font-size:1.65rem;font-weight:800;color:var(--text-main)}.vocab-card .sub{margin:0 0 1rem;color:var(--text-main);opacity:.82;font-size:.92rem;line-height:1.45}.vocab-card--error .vocab-error-title{color:var(--error)}.vocab-step.hidden,.vocab-page .hidden{display:none!important}.vocab-label{display:block;font-size:.78rem;font-weight:700;color:var(--text-main);opacity:.75;margin-bottom:.45rem;text-transform:uppercase;letter-spacing:.05em}.vocab-chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:1rem;background:#0000000d;padding:6px;border-radius:25px;box-shadow:inset 2px 2px 5px #0000001a}.vocab-chip{border:none;border-radius:20px;padding:10px 16px;font-weight:700;font-size:.88rem;cursor:pointer;font-family:inherit;background:transparent;color:var(--text-main);transition:background .25s ease,box-shadow .25s ease,transform .12s ease}.vocab-chip:hover{transform:translateY(-1px)}.vocab-chip.is-active{background:#fff;box-shadow:0 4px 10px #0000001f}#practice-mode-chips{flex-wrap:nowrap}#practice-mode-chips .vocab-chip{flex:1 1 0;min-width:0;text-align:center}.vocab-select,.vocab-input{width:100%;border:none;border-radius:var(--v-radius-inner);padding:16px 20px;font-size:1rem;margin-bottom:1rem;background-color:#ffffff80;color:var(--text-main);font-weight:600;font-family:inherit;outline:none;box-shadow:inset 4px 4px 8px #0000000d,inset -4px -4px 8px #ffffff80}.vocab-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath fill='%234a3a5a' d='M7 9L0 0h14z'/%3E%3C/svg%3E");background-repeat:no-repeat,repeat;background-position:right 18px center,0 0;padding-right:44px}.vocab-input:focus,.vocab-select:focus{background-color:#ffffffd1}.vocab-input::-moz-placeholder{color:#4a3a5a73}.vocab-input::placeholder{color:#4a3a5a73}.vocab-row{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin-bottom:1rem}.vocab-toggle{display:inline-flex;border-radius:25px;overflow:hidden;background:#0000000d;padding:6px;box-shadow:inset 2px 2px 5px #0000001a}.vocab-toggle button{border:none;padding:10px 16px;font-weight:700;font-size:.85rem;cursor:pointer;font-family:inherit;border-radius:20px;background:transparent;color:var(--text-main);transition:background .25s ease,box-shadow .25s ease}.vocab-toggle button.is-active{background:#fff;box-shadow:0 4px 10px #0000001a}.vocab-btn{width:100%;border:none;border-radius:25px;padding:16px 1.2rem;font-weight:800;font-size:1rem;cursor:pointer;margin-top:.25rem;font-family:inherit;transition:transform .2s ease,box-shadow .2s ease}.vocab-btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:0 10px 20px #9d81ba66}.vocab-btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 15px 25px #9d81ba80}.vocab-btn-primary:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}.vocab-btn-ghost{background:#ffffff73;color:var(--text-main);margin-top:.5rem;box-shadow:inset 2px 2px 6px #0000000a,0 4px 12px #5d47771f}.vocab-btn-ghost:hover{background:#ffffffa6}.vocab-session-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;font-size:.88rem;color:var(--text-main);opacity:.85;font-weight:700}.vocab-session-top .vocab-btn-ghost{width:auto;margin:0;padding:8px 14px;font-size:.82rem;border-radius:20px}.vocab-prompt{font-size:1.45rem;font-weight:800;line-height:1.25;margin:.5rem 0 1rem;word-break:break-word;color:var(--text-main)}.vocab-flip-scene{margin:0 0 1rem;display:flex;justify-content:center;perspective:1200px}.vocab-session-card-wrap{position:relative;width:330px;max-width:calc(100vw - 40px);margin:0 auto}.vocab-abort-floating{position:absolute;right:0;top:-48px;width:auto;margin:0;padding:8px 14px;font-size:.86rem;border-radius:18px;z-index:5}.vocab-game-card{position:relative;width:100%;height:430px;border-radius:28px;transition:opacity .2s ease,transform .3s ease;transform-style:preserve-3d}.vocab-game-card.is-swapping{opacity:0;transform:translateY(12px) scale(.985)}.vocab-card-flip-inner{position:relative;width:100%;height:430px;transform-style:preserve-3d;transition:transform .62s cubic-bezier(.2,.85,.2,1)}.vocab-game-card.is-revealed .vocab-card-flip-inner{transform:rotateY(180deg)}.vocab-card-face{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:28px;padding:1.35rem 1rem 1rem;background:#ffffff57;border:1px solid rgba(255,255,255,.45);backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);box-shadow:0 16px 34px #0000003d,inset 0 1px #ffffff59;display:flex;flex-direction:column;justify-content:space-between;gap:.7rem;backface-visibility:hidden;-webkit-backface-visibility:hidden;overflow:hidden}.vocab-pronounce-btn{position:absolute;top:12px;right:12px;width:38px;height:38px;border:1px solid rgba(255,255,255,.52);border-radius:50%;background:#ffffff47;color:#2e2443;font-size:1rem;line-height:1;cursor:pointer;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.vocab-pronounce-btn:hover{background:#ffffff6b}.vocab-card-face-back{transform:rotateY(180deg)}.vocab-game-word{margin:0;min-height:180px;display:flex;align-items:center;justify-content:center;text-align:center;font-size:clamp(2.2rem,8.8vw,3rem);line-height:1.08;font-weight:800;color:#2e2443;text-shadow:none;transition:transform .32s ease,opacity .28s ease}.vocab-game-answer{margin:.25rem 0 0;text-align:center;font-size:clamp(1.8rem,7vw,2.4rem);font-weight:800;color:#2e2443}.vocab-game-card #answer-block{margin-top:.2rem;transition:opacity .22s ease,transform .22s ease}.vocab-game-card #answer-block .vocab-label{margin-bottom:.4rem;color:#2e2443cc;opacity:1}.vocab-game-card #answer-block .vocab-input{margin:0;background:#ffffff3d;color:#2e2443;border:1px solid rgba(255,255,255,.35);box-shadow:none}.vocab-game-card #answer-block .vocab-input::-moz-placeholder{color:#2e24436b}.vocab-game-card #answer-block .vocab-input::placeholder{color:#2e24436b}.vocab-game-card #reveal-block{margin:auto 0;text-align:center;min-height:140px;display:flex;align-items:center;justify-content:center}.vocab-game-card #reveal-block .vocab-flip-label{margin:0 0 .35rem}.vocab-card-progress{margin:.7rem auto .35rem;display:flex;align-items:center;gap:.55rem;width:min(100%,330px)}.vocab-card-progress-track{height:8px;border-radius:999px;background:#f0edf6b8;overflow:hidden;flex:1}#session-progress-fill{display:block;height:100%;width:0;border-radius:inherit;background:var(--accent-gradient);transition:width .28s ease}.vocab-card-progress #session-progress{font-size:.9rem;font-weight:700;color:#ffffffeb;text-shadow:0 1px 6px rgba(0,0,0,.28);opacity:1}.vocab-game-card #reveal-block .vocab-flip-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;color:#2e2443a6}.vocab-page.is-session-mode{display:flex;align-items:center;justify-content:center;padding:24px 20px}.vocab-page.is-session-mode .vocab-wrap{width:100%;display:flex;flex-direction:column;align-items:center}.vocab-page.is-session-mode #vocab-session .vocab-card{margin:0}@media (prefers-reduced-motion: reduce){.vocab-game-card,.vocab-card-flip-inner,#session-progress-fill,.vocab-confetti-particle{transition-duration:.01ms;animation-duration:.01ms!important}}.vocab-card-confetti{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:visible;z-index:8}.vocab-confetti-particle{position:absolute;bottom:42%;width:16px;height:16px;-o-object-fit:contain;object-fit:contain;left:50%;opacity:0;animation-name:vocabConfettiBurst;animation-timing-function:cubic-bezier(.12,.75,.25,1);animation-fill-mode:forwards}.vocab-falling-confetti .vocab-confetti-particle.is-block-anchored{bottom:auto;left:auto;margin-left:-8px;margin-top:-8px}@keyframes vocabConfettiBurst{0%{opacity:0;transform:translate(0) rotate(0) scale(.6)}10%{opacity:1}to{opacity:0;transform:translate(var(--tx),var(--ty)) rotate(var(--rx)) scale(1)}}.vocab-summary-shell{position:relative;width:min(100%,420px);margin:0 auto;padding-top:110px;z-index:2}.vocab-summary-card{position:relative;border-radius:34px;padding-top:4.9rem;border:1px solid rgba(255,255,255,.52);box-shadow:0 14px 28px #00000042,0 0 0 1px #d0b2ff52,0 0 22px #cb9aff59;text-align:center;z-index:2}.vocab-summary-card:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:34px;pointer-events:none;border:1px solid rgba(210,170,255,.4);box-shadow:inset 0 0 22px #cca3ff2e}.vocab-summary-trophy-wrap{position:absolute;top:0;left:50%;transform:translate(-50%);width:184px;height:184px;border-radius:30px;background:#ffffff5c;border:1px solid rgba(255,255,255,.48);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:0 12px 28px #0000003d;display:flex;align-items:center;justify-content:center;z-index:7}.vocab-summary-trophy{width:122px;height:122px;image-rendering:pixelated}.vocab-summary-title{margin:0 0 .35rem;font-size:2.05rem;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.22)}.vocab-summary-sub{margin-bottom:1.2rem!important;color:#ffffffe0!important}.vocab-summary-kpis{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.55rem;margin-bottom:1rem}.vocab-kpi{border-radius:18px;padding:.68rem .5rem;background:#ffffff24;border:1px solid rgba(255,255,255,.26);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.vocab-kpi strong{display:block;font-size:2rem;line-height:1;color:#fff}.vocab-kpi span{display:block;margin-top:.18rem;font-size:1.05rem;color:#ffffffe0}.vocab-summary-toggle{margin-top:.2rem}.vocab-mistakes-list{list-style:none;margin:0 0 1rem;padding:0}.vocab-mistakes-list li{border-radius:var(--v-radius-inner);padding:.85rem 1rem;margin-bottom:.5rem;background:#e74c3c1f;border:1px solid rgba(231,76,60,.28);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);font-size:.9rem;line-height:1.45;color:#f4ecff}.vocab-summary-primary{margin-top:.9rem}.vocab-summary-home{margin-top:.55rem}.vocab-mistakes-list .mistake-prompt{font-weight:800;display:block;margin-bottom:.25rem}.vocab-mistakes-list .mistake-detail{opacity:.8;font-size:.86rem}.vocab-mistakes-list .mistake-expected{color:#2e2443;font-weight:700}.vocab-err{color:var(--error);font-size:.9rem;margin-top:-.5rem;margin-bottom:.75rem;font-weight:600}.vocab-loading{text-align:center;color:var(--text-main);opacity:.85;padding:2.25rem 1rem;font-weight:600}@media (max-width: 480px){:root{--v-radius: 38px}.vocab-page{padding:68px 14px 28px;background-attachment:scroll}.vocab-page.is-session-mode{padding:16px 14px;align-items:center}.vocab-card{padding:1.5rem 1.25rem}.vocab-card h1{font-size:1.4rem}.vocab-flip-scene{margin-bottom:.8rem}.vocab-game-card{height:400px}.vocab-session-card-wrap{width:310px;max-width:calc(100vw - 28px)}.vocab-card-flip-inner{height:400px}.vocab-card-face{padding:.9rem .85rem .85rem}.vocab-abort-floating{top:-44px;padding:7px 12px;font-size:.82rem}.vocab-summary-shell{padding-top:96px}.vocab-summary-trophy-wrap{width:152px;height:152px;border-radius:24px}.vocab-summary-trophy{width:100px;height:100px}.vocab-summary-title{font-size:1.75rem}.vocab-summary-kpis{gap:.4rem}.vocab-kpi strong{font-size:1.55rem}}@media (max-width: 768px){.vocab-page{background-image:linear-gradient(#14102257,#14102247),var(--vocab-mobile-bg-image, url(/vocabulary-bg-pc.jpg));background-size:cover;background-position:center;background-attachment:scroll}.vocab-page.is-session-mode{padding-bottom:26px}#vocab-session .vocab-card{width:100%;max-width:420px}#vocab-session #btn-check,#vocab-session #btn-next{width:100%;border-radius:26px;padding:18px;font-size:1.05rem}#vocab-session .vocab-btn-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}#vocab-session #btn-know,#vocab-session #btn-dont-know{padding:18px;border-radius:26px}}.vocab-page.is-falling-game{display:block;padding:0;min-height:100vh}.vocab-page.is-falling-game .vocab-wrap{display:none}.vocab-page.is-falling-game .back-link{opacity:0;pointer-events:none}#vocab-falling-game{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;pointer-events:none}#vocab-falling-game .vocab-falling-layer{pointer-events:auto;position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;min-height:100%;min-height:100dvh;background:transparent}.vocab-falling-exit{position:absolute;top:14px;right:14px;width:auto;z-index:70;margin:0;padding:10px 18px;font-size:.88rem;border-radius:22px}.vocab-falling-hud{flex:0 0 auto;display:flex;align-items:center;justify-content:center;gap:12px;padding:56px 16px 10px;flex-wrap:wrap}.vocab-falling-progress,.vocab-falling-score{font-size:.92rem;font-weight:800;color:#fff;text-shadow:0 1px 8px rgba(0,0,0,.45);padding:8px 16px;border-radius:999px;background:#ffffff38;border:1px solid rgba(255,255,255,.38);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 6px 20px #0003}.vocab-falling-speak{width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.45);background:#ffffff47;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);font-size:1.1rem;cursor:pointer;box-shadow:0 6px 16px #0000002e}.vocab-falling-speak:hover{background:#ffffff6b}.vocab-falling-canvas-wrap{flex:1 1 auto;position:relative;margin:0 8px;min-height:220px;overflow:hidden;border-radius:16px;background:transparent}.vocab-falling-canvas{display:block;width:100%;height:100%;background:transparent;touch-action:none}.vocab-falling-confetti{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:6;overflow:visible}.vocab-falling-hint-row{flex:0 0 auto;display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:8px 14px 4px;min-height:52px}.vocab-falling-hint-row.hidden{display:none!important}.vocab-falling-hint-btn{flex:1 1 28%;min-width:92px;max-width:200px;padding:12px 10px;border-radius:18px;border:1px solid rgba(255,255,255,.48);background:#ffffff52;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);font-family:inherit;font-size:.88rem;font-weight:700;color:#2a1f3d;cursor:pointer;box-shadow:0 6px 18px #00000026;transition:transform .12s ease,background .15s ease}.vocab-falling-hint-btn:hover{transform:translateY(-2px);background:#ffffff7a}.vocab-falling-hint-btn.is-wrong-flash{animation:vocabFallingShake .45s ease;background:#e74c3c59}@keyframes vocabFallingShake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}.vocab-falling-dock{flex:0 0 auto;padding:12px 16px calc(16px + env(safe-area-inset-bottom,0));background:transparent}.vocab-falling-answer-form{display:flex;flex-direction:column;margin:0}.vocab-falling-submit-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;opacity:0;pointer-events:none}.vocab-falling-dock-label{display:block;font-size:.72rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#ffffffeb;text-shadow:0 1px 6px rgba(0,0,0,.4);margin-bottom:8px;padding-left:4px}.vocab-falling-input{width:100%;border:none;border-radius:26px;padding:18px 20px;font-size:1.08rem;font-weight:700;font-family:inherit;color:#2a1f3d;background:#ffffff6b;border:1px solid rgba(255,255,255,.55);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:0 10px 28px #0003,inset 0 1px #ffffff80;outline:none}.vocab-falling-input:focus{background:#ffffff94}.vocab-falling-input::-moz-placeholder{color:#2a1f3d73}.vocab-falling-input::placeholder{color:#2a1f3d73}.vocab-falling-input-bad{outline:2px solid #e74c3c!important;animation:vocabFallingShake .35s ease}.vocab-format-hint{font-size:.82rem!important;line-height:1.4}