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#0006;--btc-shadow-lg:0 8px 32px #0009;--btc-btn-primary:#6366f1;--btc-btn-primary-hover:#818cf8;--btc-btn-text:#fff;--btc-btn-dark-bg:#1a1a4a;--toggle-bg:#ffffff1f;--toggle-border:#fff3;--toggle-shadow:0 4px 12px #0000004d}:root[data-theme=light]{--game-ink:#1a1040;--game-muted:#1a104099;--game-bg:radial-gradient(ellipse at 25% 15%, #4f46e51a, transparent 55%), linear-gradient(135deg, #f0f2ff 0%, #fafbff 100%);--game-card-bg:#fff;--game-card-border:#00000014;--game-card-shadow:0 4px 20px #0000001a;--game-star:#4f46e540;--game-star-gold:#b4530966;--game-score:#b45309;--game-score-glow:#b4530940;--game-good:#15803d;--game-bad:#dc2626;--game-verse-ink:#92400e;--game-verse-bg:#b4530914;--game-verse-border:#b4530959;--game-flame-ink:#b45309;--game-flame-bg:#b453091a;--game-flame-border:#b453094d;--game-row-bg:#0f0a2e0d;--game-row-border:#0f0a2e1f;--game-chip-bg:#4f46e514;--game-chip-border:#4f46e559;--game-chip-ink:#4338ca;--game-btn-grad:linear-gradient(180deg, #5b2bd0 0%, #3d1a9e 100%);--game-btn-shadow:#2a1060;--game-btn-glow:#5b2bd059;--game-letter-bg:#ffd70033;--game-letter-border:#ffd70080;--game-letter-ink:gold;--game-timer-track:#0f0a2e1f;--app-root-bg:#f5f7ff;--app-card-bg:#fff;--app-card-border:#0000000f;--app-card-shadow:0 8px 32px #0000001f;--btc-surface:#fff;--btc-panel-bg:#f5f7ff;--btc-elevated:#f0f2ff;--btc-selected-bg:#4f46e51a;--btc-border:#00000014;--btc-border-strong:#00000026;--btc-text-strong:#1a1040;--btc-text-mid:#3f3a5e;--btc-nav-bg:#fffffff7;--btc-nav-border:#00000014;--btc-nav-active:#4f46e5;--btc-nav-inactive:#6b7280;--btc-hero-grad:linear-gradient(135deg, #f0f2ff 0%, #fafbff 100%);--btc-deco-grad:radial-gradient(circle at top left, #e0e7ff, #fafbff 60%, #f0f2ff);--btc-section-tint:#f5f7ff;--btc-ink:#0f0a2e;--btc-text-main:#1a1040;--btc-text-subtle:#565e70;--btc-text-muted:#6f7787;--btc-accent:#4f46e5;--btc-accent-deep:#4338ca;--btc-accent-soft:#4f46e51a;--btc-accent-border:#4f46e54d;--btc-gold:#b45309;--btc-green:#15803d;--btc-red:#dc2626;--btc-success-soft:#dcfce7;--btc-warn-soft:#fff7ed;--btc-tip-bg:linear-gradient(160deg, #fef3c7 0%, #fffbeb 100%);--btc-tip-border:#b4530966;--btc-tip-ink:#92400e;--btc-tip-text:#713f12;--btc-red-soft:#fee2e2;--btc-shadow:0 2px 12px #00000014;--btc-shadow-lg:0 8px 32px #0000001f;--btc-btn-primary:#4f46e5;--btc-btn-primary-hover:#4338ca;--btc-btn-text:#fff;--btc-btn-dark-bg:#0f0a2e;--toggle-bg:#4f46e5;--toggle-border:transparent;--toggle-shadow:0 4px 12px #4f46e566}@media (prefers-color-scheme:light){:root:not([data-theme=dark]){--game-ink:#1a1040;--game-muted:#1a104099;--game-bg:radial-gradient(ellipse at 25% 15%, #4f46e51a, transparent 55%), linear-gradient(135deg, #f0f2ff 0%, #fafbff 100%);--game-card-bg:#fff;--game-card-border:#00000014;--game-card-shadow:0 4px 20px #0000001a;--game-star:#4f46e540;--game-star-gold:#b4530966;--game-score:#b45309;--game-score-glow:#b4530940;--game-good:#15803d;--game-bad:#dc2626;--game-verse-ink:#92400e;--game-verse-bg:#b4530914;--game-verse-border:#b4530959;--game-flame-ink:#b45309;--game-flame-bg:#b453091a;--game-flame-border:#b453094d;--game-row-bg:#0f0a2e0d;--game-row-border:#0f0a2e1f;--game-chip-bg:#4f46e514;--game-chip-border:#4f46e559;--game-chip-ink:#4338ca;--game-btn-grad:linear-gradient(180deg, #5b2bd0 0%, #3d1a9e 100%);--game-btn-shadow:#2a1060;--game-btn-glow:#5b2bd059;--game-letter-bg:#ffd70033;--game-letter-border:#ffd70080;--game-letter-ink:gold;--game-timer-track:#0f0a2e1f;--app-root-bg:#f5f7ff;--app-card-bg:#fff;--app-card-border:#0000000f;--app-card-shadow:0 8px 32px #0000001f;--btc-surface:#fff;--btc-panel-bg:#f5f7ff;--btc-elevated:#f0f2ff;--btc-selected-bg:#4f46e51a;--btc-border:#00000014;--btc-border-strong:#00000026;--btc-text-strong:#1a1040;--btc-text-mid:#3f3a5e;--btc-nav-bg:#fffffff7;--btc-nav-border:#00000014;--btc-nav-active:#4f46e5;--btc-nav-inactive:#6b7280;--btc-hero-grad:linear-gradient(135deg, #f0f2ff 0%, #fafbff 100%);--btc-deco-grad:radial-gradient(circle at top left, #e0e7ff, #fafbff 60%, #f0f2ff);--btc-section-tint:#f5f7ff;--btc-ink:#0f0a2e;--btc-text-main:#1a1040;--btc-text-subtle:#565e70;--btc-text-muted:#6f7787;--btc-accent:#4f46e5;--btc-accent-deep:#4338ca;--btc-accent-soft:#4f46e51a;--btc-accent-border:#4f46e54d;--btc-gold:#b45309;--btc-green:#15803d;--btc-red:#dc2626;--btc-success-soft:#dcfce7;--btc-warn-soft:#fff7ed;--btc-tip-bg:linear-gradient(160deg, #fef3c7 0%, #fffbeb 100%);--btc-tip-border:#b4530966;--btc-tip-ink:#92400e;--btc-tip-text:#713f12;--btc-red-soft:#fee2e2;--btc-shadow:0 2px 12px #00000014;--btc-shadow-lg:0 8px 32px #0000001f;--btc-btn-primary:#4f46e5;--btc-btn-primary-hover:#4338ca;--btc-btn-text:#fff;--btc-btn-dark-bg:#0f0a2e;--toggle-bg:#4f46e5;--toggle-border:transparent;--toggle-shadow:0 4px 12px #4f46e566}}.btc-game{color:var(--game-ink);background:var(--game-bg);border-radius:20px;padding:16px;transition:background .3s,color .3s;position:relative;overflow:hidden}.btc-game h2,.btc-card .btc-game h2,.btc-game h3,.btc-card .btc-game h3{color:var(--game-ink)!important}.btc-game .btc-text-muted,.btc-card .btc-game .btc-text-muted{color:var(--game-muted)!important}.btc-starfield{pointer-events:none;z-index:0;position:absolute;inset:0;overflow:hidden}.btc-game>:not(.btc-starfield){z-index:1;position:relative}.btc-star{background:var(--game-star);opacity:.5;animation:btc-twinkle var(--twinkle-dur,3s) ease-in-out infinite alternate, btc-drift var(--drift-dur,40s) linear infinite alternate;border-radius:50%;position:absolute}.btc-star.gold{background:var(--game-star-gold)}@keyframes btc-twinkle{0%{opacity:.15}to{opacity:.9}}@keyframes btc-drift{0%{transform:translateY(0)}to{transform:translateY(14px)}}.coach-card{border-radius:24px;transition:transform .3s,box-shadow .3s;transform:perspective(1000px)rotateX(2deg);box-shadow:0 20px 40px #0f172a40,0 0 0 1px #ffd70040,inset 0 1px #ffffff59}.coach-card:hover{transform:perspective(1000px)rotateX(0)scale(1.02);box-shadow:0 24px 48px #0f172a4d,0 0 0 1px #ffd70066,inset 0 1px #ffffff59}.answer-btn{background:var(--game-btn-grad);box-shadow:0 6px 0 var(--game-btn-shadow), 0 8px 20px var(--game-btn-glow), inset 0 1px 0 #fff3;color:#fff;cursor:pointer;text-align:left;border:none;border-radius:16px;align-items:center;gap:10px;width:100%;padding:16px 18px;font-size:16px;font-weight:700;transition:all .1s;display:flex}.answer-btn:active{box-shadow:0 1px 0 var(--game-btn-shadow), 0 2px 8px var(--game-btn-glow);transform:translateY(5px)}.answer-btn:disabled{cursor:default}.answer-btn .answer-letter{border:1px solid var(--game-letter-border);background:var(--game-letter-bg);width:26px;height:26px;color:var(--game-letter-ink);border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;font-weight:800;display:inline-flex}.answer-btn.correct{color:#052e0a;background:linear-gradient(#7be87a 0%,#4caf50 100%);animation:.5s correct-pulse;box-shadow:0 6px #2e7d32,0 0 30px #7be87a99}.answer-btn.correct .answer-letter{color:#052e0a;border-color:#00000040}.answer-btn.wrong{background:linear-gradient(#ff6b6b 0%,#c62828 100%);animation:.4s wrong-shake;box-shadow:0 6px #7b1a1a}.answer-btn.dimmed{opacity:.55}@keyframes correct-pulse{0%{transform:scale(1)}50%{transform:scale(1.05)translateY(-2px)}to{transform:scale(1)}}@keyframes wrong-shake{0%,to{transform:translate(0)}25%{transform:translate(-8px)}75%{transform:translate(8px)}}.score-display{color:var(--game-score);text-shadow:0 0 20px var(--game-score-glow), 0 4px 8px #0000004d;letter-spacing:4px;font-family:Courier 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14px;overflow:hidden}.timer-bar{background:#7be87a;border-radius:3px;height:100%;transition:width 1s linear,background-color .5s}.timer-bar.warn{background:#ffd54f}.timer-bar.danger{background:#ff6b6b;animation:.6s ease-in-out infinite btc-timer-pulse}@keyframes btc-timer-pulse{0%,to{opacity:1}50%{opacity:.55}}.btc-streak-flame{background:var(--game-flame-bg);border:1px solid var(--game-flame-border);color:var(--game-flame-ink);border-radius:999px;align-items:center;gap:6px;padding:4px 12px;font-size:13px;font-weight:800;animation:.45s btc-flame-pop;display:inline-flex}@keyframes btc-flame-pop{0%{transform:scale(.7)}60%{transform:scale(1.15)}to{transform:scale(1)}}.verse-reveal{border:1px solid var(--game-verse-border);background:var(--game-verse-bg);color:var(--game-verse-ink);border-radius:14px;margin-top:12px;padding:12px 14px;font-size:14px;animation:.6s btc-verse-in;box-shadow:0 0 24px #ffd70038}@keyframes btc-verse-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.btc-winner{text-align:center;padding:24px 12px;animation:.5s cubic-bezier(.34,1.56,.64,1) question-enter}.btc-winner .btc-winner-avatar{margin-bottom:8px;font-size:64px;line-height:1;animation:.9s ease-out btc-perfect-bounce;display:block}.btc-podium-row{background:var(--game-row-bg);border:1px solid var(--game-row-border);border-radius:12px;justify-content:space-between;align-items:center;margin-bottom:6px;padding:8px 12px;font-size:15px;display:flex}.btc-podium-row.leader{background:var(--game-verse-bg);border-color:var(--game-verse-border)}.tts-playing-indicator{color:var(--btc-gold,#b8860b);align-items:center;gap:6px;margin-top:4px;font-size:12px;font-weight:600;animation:1s infinite tts-pulse;display:inline-flex}@keyframes tts-pulse{0%,to{opacity:1}50%{opacity:.4}}.answer-grid{flex-direction:column;gap:10px;display:flex}@media (min-width:768px){.btc-game{padding:24px}.answer-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.answer-btn{padding:20px 16px;font-size:17px}.question-card{padding:28px}.question-card .q-text{font-size:20px}.score-display{font-size:64px}}.pro-locked{opacity:.6;position:relative}.pro-locked:after{content:"🔒 Pro";color:var(--btc-gold,#b8860b);background:#ffd70033;border:1px solid #ffd70066;border-radius:8px;padding:2px 8px;font-size:11px;position:absolute;top:8px;right:8px}.btc-game .pro-locked:after{color:var(--game-score)}.btc-modal-overlay{z-index:2000;background:#020617b3;justify-content:center;align-items:center;padding:20px;animation:.25s btc-verse-in;display:flex;position:fixed;inset:0}.btc-modal{background:var(--app-card-bg,#fff);border-radius:20px;width:100%;max-width:420px;max-height:85vh;padding:22px;animation:.35s cubic-bezier(.34,1.56,.64,1) question-enter;overflow-y:auto;box-shadow:0 24px 60px #0f172a80}.btc-modal h3{margin-top:0}.btc-modal-row{align-items:flex-start;gap:10px;margin:10px 0;font-size:14px;display:flex}.btc-modal-row .icon{flex-shrink:0;font-size:16px}.btc-name-grid{grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:6px;margin-top:8px;display:grid}.btc-name-chip{border:1px solid var(--btc-border);background:var(--btc-surface);cursor:pointer;color:var(--btc-ink);white-space:nowrap;text-overflow:ellipsis;border-radius:999px;padding:6px 8px;font-size:12.5px;font-weight:600;transition:background-color .12s,transform 80ms;overflow:hidden}.btc-name-chip:active{transform:scale(.95)}.btc-name-chip.picked{background:var(--btc-selected-bg);border-color:var(--btc-accent);color:var(--btc-accent-deep)}.theme-toggle{top:calc(12px + env(safe-area-inset-top));z-index:1500;border:1px solid var(--toggle-border);background:var(--toggle-bg);width:44px;height:44px;box-shadow:var(--toggle-shadow);cursor:pointer;border-radius:14px;justify-content:center;align-items:center;padding:0;font-size:22px;line-height:1;transition:transform 80ms,background .2s,box-shadow .2s;display:flex;position:fixed;right:16px}.theme-toggle:active{transform:scale(.92)}.theme-toggle.below-family-banner{top:calc(64px + env(safe-area-inset-top))}:root{--btc-input-bg:var(--btc-elevated);--btc-input-border:var(--btc-border-strong);--btc-text:var(--btc-ink);--btc-btn-bg:var(--btc-surface)}.btc-card input[type=text],.btc-card input[type=search],.btc-card input[type=number],.btc-card input[type=password],.btc-card select{background:var(--btc-elevated);color:var(--btc-ink);border:1px solid var(--btc-border-strong);border-radius:12px}.btc-card input::placeholder{color:var(--btc-text-muted);opacity:1}select option{background:var(--btc-surface);color:var(--btc-ink)}input[type=range],input[type=checkbox]{accent-color:var(--btc-accent)}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}