:root{--cat-red-text:#c4131a;--cat-red-fill:#fbdadb;--cat-red-card:#fdefef;--cat-orange-text:#b73a0c;--cat-orange-fill:#fde4db;--cat-orange-card:#fef3ef;--cat-amber-orange-text:#a2530a;--cat-amber-orange-fill:#fdebda;--cat-amber-orange-card:#fef6ef;--cat-amber-text:#8a6504;--cat-amber-fill:#fef4d9;--cat-amber-card:#fffaee;--cat-yellow-text:#787500;--cat-yellow-fill:#fefdd6;--cat-yellow-card:#fffeed;--cat-lime-text:#5d7520;--cat-lime-fill:#f0f6df;--cat-lime-card:#f8fbf1;--cat-green-text:#00773c;--cat-green-fill:#d6f0e3;--cat-green-card:#edf8f3;--cat-teal-brand-text:#007462;--cat-teal-brand-fill:#d6efeb;--cat-teal-brand-card:#edf8f6;--cat-teal-text:#007575;--cat-teal-fill:#d6f1f1;--cat-teal-card:#edf9f9;--cat-sky-text:#006f9e;--cat-sky-fill:#d6f1fd;--cat-sky-card:#edf9fe;--cat-blue-text:#0048a0;--cat-blue-fill:#d6e2f0;--cat-blue-card:#edf2f8;--cat-navy-text:#181060;--cat-navy-fill:#dad9e6;--cat-navy-card:#efeef4;--cat-violet-text:#802890;--cat-violet-fill:#ebdded;--cat-violet-card:#f6f0f7;--cat-black-text:#17181b;--cat-black-fill:#dadadb;--cat-black-card:#efefef;--cat-white-text:#1a2330;--cat-white-fill:#eceff4;--cat-white-card:#f6f7f9}html.dark{--cat-red-text:#f17075;--cat-red-fill:#511f26;--cat-red-card:#392027;--cat-orange-text:#f4875e;--cat-orange-fill:#532f26;--cat-orange-card:#3a2927;--cat-amber-orange-text:#f39843;--cat-amber-orange-fill:#533a24;--cat-amber-orange-card:#3a2e26;--cat-amber-text:#f8b810;--cat-amber-fill:#554822;--cat-amber-card:#3b3625;--cat-yellow-text:#f8f000;--cat-yellow-fill:#55571e;--cat-yellow-card:#3b3e22;--cat-lime-text:#a0c838;--cat-lime-fill:#3e4c2c;--cat-lime-card:#2e382a;--cat-green-text:#00bf5f;--cat-green-fill:#154232;--cat-green-card:#18332e;--cat-teal-brand-text:#00bc9e;--cat-teal-brand-fill:#15403f;--cat-teal-brand-card:#183234;--cat-teal-text:#00c2c2;--cat-teal-fill:#154449;--cat-teal-card:#18343a;--cat-sky-text:#15b9ff;--cat-sky-fill:#15445c;--cat-sky-card:#183444;--cat-blue-text:#3f95ff;--cat-blue-fill:#152b47;--cat-blue-card:#182639;--cat-navy-text:#877ce9;--cat-navy-fill:#1b1d37;--cat-navy-card:#1b1f30;--cat-violet-text:#c974d8;--cat-violet-fill:#362343;--cat-violet-card:#2a2237;--cat-black-text:#838795;--cat-black-fill:#1b1f25;--cat-black-card:#1b2026;--cat-white-text:#e8edf2;--cat-white-fill:#2a313b;--cat-white-card:#20252c}:root{--bg:#ffffff;--surface:#f4f6f9;--surface2:#eceff4;--border:rgba(0,0,0,.06);--border-strong:rgba(0,0,0,.1);--text:#1a2332;--muted:#8a9199;--primary:#009880;--primary-light:#00b399;--primary-bg:rgba(0,152,128,.06);--primary-ring:rgba(0,152,128,.15);--danger:#ef4444;--success:#22c55e;--warning:#f59e0b;--on-primary:#ffffff;--radius:16px;--radius-sm:8px;--shadow:0 1px 4px rgba(0,0,0,.04);--shadow-lg:0 8px 24px rgba(0,0,0,.06)}html.dark{--bg:#14181d;--surface:#1c2128;--surface2:#232a33;--border:rgba(255,255,255,.07);--border-strong:rgba(255,255,255,.13);--text:#e8edf2;--muted:#8b95a3;--primary:#10b89f;--primary-light:#1ccfb4;--primary-bg:rgba(16,184,159,.13);--primary-ring:rgba(16,184,159,.28);--danger:#f87171;--success:#34d399;--warning:#fbbf24;--on-primary:#ffffff;--shadow:0 1px 4px rgba(0,0,0,.3);--shadow-lg:0 10px 30px rgba(0,0,0,.45)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--surface2);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:13px;line-height:1.5;transition:background .2s,color .2s;display:flex;justify-content:center;align-items:stretch}#root{width:100%;display:flex;justify-content:center;align-items:stretch}button{font:inherit}.gate .btn.primary{flex:none}.fl-txt{font-family:Noto Sans SC,Inter,sans-serif}.mono{font-family:SF Mono,Menlo,monospace}.app{position:relative;width:100%;max-width:430px;min-height:100vh;background:var(--bg);overflow:hidden;display:flex;flex-direction:column}@media (min-width:470px){body{padding:24px 0}.app{min-height:auto;height:calc(100vh - 48px);border-radius:38px;box-shadow:var(--shadow-lg)}}.screen{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;background:var(--bg)}.screen.active{display:flex;animation:slideIn .28s cubic-bezier(.2,.8,.2,1)}.screen.back{animation:slideBack .28s cubic-bezier(.2,.8,.2,1)}@keyframes slideIn{0%{opacity:0;transform:translate(24px)}to{opacity:1;transform:none}}@keyframes slideBack{0%{opacity:0;transform:translate(-24px)}to{opacity:1;transform:none}}.scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.topbar{flex:none;display:flex;align-items:center;gap:12px;padding:16px 18px 10px}.topbar .grow{flex:1;min-width:0}.hi{font-size:12px;color:var(--muted);font-weight:500}.pt{font-size:22px;font-weight:700;letter-spacing:-.2px;margin-top:1px}.pt-sub{font-size:12.5px;color:var(--muted);margin-top:2px}.linklike{background:none;border:none;padding:0;font:inherit;color:var(--primary);cursor:pointer;text-decoration:underline}.linklike:disabled{opacity:.6;cursor:default}.iconbtn{width:38px;height:38px;border-radius:999px;border:none;background:var(--surface2);color:var(--text);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;flex:none;transition:color .12s,background .12s}.iconbtn:hover{color:var(--primary)}.iconbtn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.iconbtn:focus-visible{outline:none;box-shadow:0 0 0 2px var(--primary-ring)}.back{background:transparent;margin-left:-6px}.back:hover{background:var(--surface2)}.theme-toggle .moon{display:none}.theme-toggle .sun,html.dark .theme-toggle .moon{display:block}html.dark .theme-toggle .sun{display:none}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:6px 18px 4px}.stat{background:var(--surface);border-radius:var(--radius);padding:13px 14px;box-shadow:var(--shadow)}.stat .sl{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin-bottom:5px}.stat .sv{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:3px}.stat .sv.teal{color:var(--primary)}.stat .sv small{font-size:11px;font-weight:600;color:var(--muted)}.slabel{display:flex;align-items:center;justify-content:space-between;padding:20px 18px 10px;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--muted)}.slabel .add{font-size:12px;font-weight:600;color:var(--primary);text-transform:none;letter-spacing:0;background:none;border:none;cursor:pointer;display:inline-flex;align-items:center;gap:4px}.slabel .add{padding:6px 4px}.slabel .add svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}.plist{padding:0 18px;display:flex;flex-direction:column;gap:10px}.pcard{width:100%;text-align:left;background:var(--surface);border:none;border-radius:var(--radius);box-shadow:var(--shadow);padding:15px 16px;cursor:pointer;display:flex;gap:14px;align-items:center;transition:transform .12s,box-shadow .12s;font:inherit;color:inherit}.pcard:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg)}.pcard:focus-visible{outline:none;box-shadow:0 0 0 2px var(--primary-ring)}.flag{width:46px;height:46px;border-radius:var(--radius);flex:none;display:grid;place-items:center;font-size:26px;line-height:1;background:var(--surface2)}.pc-main{flex:1;min-width:0}.pc-top{display:flex;align-items:center;gap:8px}.pc-name{font-size:15px;font-weight:700}.pc-lvl{font-size:10px;font-weight:600;color:var(--muted);font-family:SF Mono,Menlo,monospace}.pc-topic{font-size:12.5px;color:var(--muted);margin:3px 0 9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.bar{height:6px;border-radius:999px;background:var(--surface2);overflow:hidden}.bar>i{display:block;height:100%;border-radius:999px;background:var(--primary)}.pc-meta{display:flex;align-items:center;justify-content:space-between;margin-top:7px}.pc-pct{font-size:11px;font-weight:600;color:var(--muted);font-variant-numeric:tabular-nums}.streak{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:600;color:var(--warning)}.streak svg{width:12px;height:12px;fill:currentColor;stroke:none}.chevr{width:18px;height:18px;color:var(--muted);flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.wrap{padding:0 18px}.callcard{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 20px;text-align:center;margin-top:4px}.teacher-av{width:76px;height:76px;border-radius:999px;margin:0 auto 12px;display:grid;place-items:center;font-size:30px;font-weight:700;color:var(--on-primary);background:var(--primary);position:relative}.teacher-av .ring{position:absolute;top:-5px;right:-5px;bottom:-5px;left:-5px;border-radius:999px;border:2px solid var(--primary-ring)}.tc-name{font-size:17px;font-weight:700}.tc-role{font-size:12.5px;color:var(--muted);margin-top:2px}.tc-chips{display:flex;justify-content:center;gap:6px;margin:12px 0 18px;flex-wrap:wrap}.chip{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:600;padding:5px 10px;border-radius:999px;background:var(--surface2);color:var(--muted)}.chip svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.btn-call{width:100%;height:52px;border:none;border-radius:var(--radius);cursor:pointer;background:var(--primary);color:var(--on-primary);font:inherit;font-size:15px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:9px;transition:background .12s,transform .12s}.btn-call:hover{background:var(--primary-light)}.btn-call:active{transform:scale(.99)}.btn-call:disabled{opacity:.6;cursor:default}.btn-call:focus-visible{outline:none;box-shadow:0 0 0 3px var(--primary-ring)}.btn-call svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.deck{padding:0 18px 28px;display:grid;grid-template-columns:1fr 1fr;gap:10px}.vcard{position:relative;height:132px;background:none;border:none;padding:0;cursor:pointer;perspective:900px;font:inherit;color:inherit;text-align:left;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.vcard:focus-visible{outline:none}.vcard:focus-visible .vc-inner{box-shadow:0 0 0 2px var(--primary-ring),var(--shadow)}.vc-inner{position:relative;width:100%;height:100%;border-radius:var(--radius);transition:transform .5s cubic-bezier(.2,.8,.2,1);transform-style:preserve-3d;box-shadow:var(--shadow)}.vcard.flipped .vc-inner{transform:rotateY(180deg)}.vc-face{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:var(--radius);padding:14px;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column}.vc-front{background:var(--surface)}.vc-back{background:var(--primary-bg);transform:rotateY(180deg)}.vc-fl{font-size:19px;font-weight:700;line-height:1.25}.vc-py{font-size:11.5px;color:var(--muted);margin-top:3px;font-style:italic}.vc-en{font-size:16px;font-weight:600;line-height:1.3;margin-top:2px}.vc-en-lbl{font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--primary)}.vc-bars{margin-top:auto;display:flex;gap:3px}.vc-bars span{flex:1;height:4px;border-radius:999px;background:var(--surface2)}.vc-bars span.on{background:var(--primary)}.vc-del{position:absolute;top:0;right:0;bottom:0;left:0;z-index:5;border-radius:var(--radius);background:#0000008c;display:grid;place-items:center;animation:fadeIn .15s ease}.vc-del-btn{display:inline-flex;align-items:center;gap:7px;border:none;border-radius:999px;background:var(--danger);color:#fff;font:inherit;font-size:13px;font-weight:600;padding:9px 16px;cursor:pointer}.vc-del-btn:active{transform:scale(.96)}.vc-del-btn:disabled{opacity:.7}.vc-del-btn svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.vcard.selectable{cursor:pointer}.vcard.selected .vc-inner{box-shadow:0 0 0 2px var(--primary),var(--shadow)}.vc-check{position:absolute;top:8px;left:8px;z-index:6;width:22px;height:22px;border-radius:999px;border:2px solid var(--border-strong);background:var(--bg);display:grid;place-items:center;color:transparent}.vc-check svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.vcard.selected .vc-check{background:var(--primary);border-color:var(--primary);color:#fff}.vc-front .vc-bars+.vc-hint{margin-top:6px}.vc-hint{margin-top:auto;font-size:10px;color:var(--muted);display:flex;align-items:center;gap:4px}.vc-hint svg{width:11px;height:11px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.vc-speak{position:absolute;top:10px;right:10px;width:32px;height:32px;border-radius:999px;border:none;background:var(--surface2);color:var(--primary);cursor:pointer;display:grid;place-items:center;transition:background .12s,transform .12s}.vc-speak:hover{background:var(--primary);color:var(--on-primary)}.vc-speak:active{transform:scale(.92)}.vc-speak:focus-visible{outline:none;box-shadow:0 0 0 2px var(--primary-ring)}.vc-speak svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.vc-speak.playing{background:var(--primary);color:var(--on-primary);animation:pulse 1s ease-in-out infinite}@keyframes pulse{0%,to{box-shadow:0 0 0 0 var(--primary-ring)}50%{box-shadow:0 0 0 6px transparent}}.concepts{padding:0 18px 20px;display:flex;flex-direction:column;gap:10px}.concept{background:var(--primary-bg);border-radius:var(--radius);padding:13px 15px}.concept-title{font-size:13.5px;font-weight:700;display:flex;align-items:center;gap:7px;color:var(--primary)}.concept-title svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.concept-exp{font-size:12.5px;color:var(--text);margin-top:5px;line-height:1.5}.empty{text-align:center;padding:34px 24px;color:var(--muted)}.empty .eico{width:44px;height:44px;margin:0 auto 12px;border-radius:16px;background:var(--surface2);display:grid;place-items:center}.empty .eico svg{width:22px;height:22px;fill:none;stroke:var(--muted);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.empty h4{font-size:14px;font-weight:600;color:var(--text);margin:0}.empty p{font-size:12.5px;margin:5px 0 0}#call{background:var(--bg)}.call-head{flex:none;display:flex;align-items:center;gap:12px;padding:16px 18px 12px}.call-head .grow{flex:1;min-width:0}.ch-name{font-size:15px;font-weight:700;display:flex;align-items:center;gap:7px}.livedot{width:8px;height:8px;border-radius:999px;background:var(--success);box-shadow:0 0 0 3px #22c55e2e;animation:live 1.6s ease-in-out infinite}@keyframes live{0%,to{opacity:1}50%{opacity:.35}}.ch-timer{font-size:12px;color:var(--muted);font-family:SF Mono,Menlo,monospace;margin-top:2px}.orb-stage{flex:none;display:grid;place-items:center;padding:8px 0 14px}.orb{width:96px;height:96px;border-radius:999px;position:relative;display:grid;place-items:center;font-size:36px;font-weight:700;color:var(--on-primary);background:var(--primary)}.orb .halo{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:999px;box-shadow:0 0 0 0 var(--primary-ring)}.orb.speaking .halo{animation:halo 1.4s ease-out infinite}@keyframes halo{0%{box-shadow:0 0 0 0 var(--primary-ring)}to{box-shadow:0 0 0 22px transparent}}.orb-cap{margin-top:9px;font-size:11px;color:var(--muted);text-align:center;height:14px}.chat{flex:1;overflow-y:auto;padding:6px 18px 12px;display:flex;flex-direction:column;gap:12px}.msg{max-width:84%;display:flex;flex-direction:column;gap:3px;animation:msgIn .28s ease}@keyframes msgIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.msg.agent{align-self:flex-start}.msg.user{align-self:flex-end;align-items:flex-end}.who{font-size:10px;font-weight:600;color:var(--muted);padding:0 4px;text-transform:uppercase;letter-spacing:.4px}.bubble{padding:10px 13px;border-radius:16px;font-size:13.5px;line-height:1.5}.msg.agent .bubble{background:var(--surface);border-bottom-left-radius:5px}.msg.user .bubble{background:var(--primary);color:var(--on-primary);border-bottom-right-radius:5px}.tr-fl{font-weight:700;font-family:Noto Sans SC,Inter,sans-serif}.typing{align-self:flex-start;display:flex;gap:4px;padding:12px 15px;background:var(--surface);border-radius:16px 16px 16px 5px}.typing i{width:6px;height:6px;border-radius:999px;background:var(--muted);animation:blink 1.2s infinite}.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}@keyframes blink{0%,60%,to{opacity:.3}30%{opacity:1}}.callbar{flex:none;display:flex;align-items:center;gap:12px;padding:14px 18px calc(16px + env(safe-area-inset-bottom));background:var(--surface);border-top:1px solid var(--border)}.cb-av{width:40px;height:40px;border-radius:999px;display:grid;place-items:center;color:var(--on-primary);font-weight:700;font-size:15px;background:var(--primary);flex:none}.cb-info{flex:1;min-width:0}.cb-name{font-size:13.5px;font-weight:600}.cb-status{font-size:11px;color:var(--muted);font-family:SF Mono,Menlo,monospace}.cb-btn{width:44px;height:44px;border-radius:999px;border:none;cursor:pointer;display:grid;place-items:center;flex:none;transition:background .12s,color .12s}.cb-btn.ghost{background:var(--surface2);color:var(--text)}.cb-btn.ghost:hover{color:var(--primary)}.cb-btn.ghost.muted{color:var(--danger)}.cb-btn.end{background:var(--danger);color:var(--on-primary)}.cb-btn.end:hover{filter:brightness(1.05)}.cb-btn:disabled{opacity:.4;cursor:default}.cb-btn:focus-visible{outline:none;box-shadow:0 0 0 2px var(--primary-ring)}.cb-btn svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.gen-hero{padding:12px 22px 2px;text-align:center}.gen-hero .spark{width:40px;height:40px;margin:0 auto 8px;border-radius:var(--radius);background:var(--primary-bg);display:grid;place-items:center;color:var(--primary)}.gen-hero .spark svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.gen-hero h2{font-size:17px;font-weight:700;margin:0;display:flex;align-items:center;justify-content:center;gap:7px}.gen-hero p{font-size:12.5px;color:var(--muted);margin:4px 0 0}#postcall .deck{padding-top:8px}.gen-spin{width:16px;height:16px;border-radius:999px;border:2px solid var(--surface2);border-top-color:var(--primary);display:inline-block;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.sk{background:linear-gradient(90deg,var(--surface2) 25%,var(--border) 37%,var(--surface2) 63%);background-size:400% 100%;animation:shimmer 1.4s infinite;border-radius:8px}@keyframes shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}.footer{flex:none;padding:12px 18px calc(16px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--border);display:flex;gap:10px}.btn{height:48px;border-radius:var(--radius);border:none;cursor:pointer;font:inherit;font-size:14px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:background .12s}.btn.primary{background:var(--primary);color:var(--on-primary);flex:1}.btn.primary:hover{background:var(--primary-light)}.btn.primary:disabled{opacity:.6;cursor:default}.btn.ghost{background:var(--surface2);color:var(--text)}.btn.ghost:hover{color:var(--primary)}.btn:focus-visible{outline:none;box-shadow:0 0 0 3px var(--primary-ring)}.btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.gate{flex:1;display:flex;flex-direction:column;justify-content:center;padding:28px 24px calc(28px + env(safe-area-inset-bottom))}.gate .brand{width:56px;height:56px;margin:0 auto 18px;border-radius:16px;background:var(--primary);display:grid;place-items:center;color:var(--on-primary);font-size:26px;font-weight:700}.gate h1{font-size:22px;font-weight:700;text-align:center;margin:0}.gate p{font-size:13px;color:var(--muted);text-align:center;margin:8px 0 22px}.gate label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);display:block;margin-bottom:6px}.gate input{width:100%;height:52px;border-radius:var(--radius);border:1px solid var(--border-strong);background:var(--surface);color:var(--text);padding:0 16px;font:inherit;font-size:16px;letter-spacing:2px;text-align:center;font-family:SF Mono,Menlo,monospace}.gate input:focus-visible{outline:none;box-shadow:0 0 0 3px var(--primary-ring);border-color:var(--primary)}.gate .err{color:var(--danger);font-size:12.5px;text-align:center;margin:12px 0 0;min-height:16px}.sheet-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:50;background:#0006;display:flex;align-items:flex-end;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.sheet{width:100%;background:var(--bg);border-radius:24px 24px 0 0;padding:20px 18px calc(20px + env(safe-area-inset-bottom));box-shadow:var(--shadow-lg);animation:sheetUp .28s cubic-bezier(.2,.8,.2,1)}@keyframes sheetUp{0%{transform:translateY(100%)}to{transform:none}}.sheet-title{font-size:16px;font-weight:700;margin-bottom:14px}.sheet-empty{font-size:13px;color:var(--muted);text-align:center;padding:14px}.lang-list{display:flex;flex-direction:column;gap:8px}.lang-opt{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:var(--surface);border:none;border-radius:var(--radius);padding:12px 14px;cursor:pointer;font:inherit;color:inherit;transition:transform .12s,box-shadow .12s}.lang-opt:hover{box-shadow:var(--shadow)}.lang-opt:active{transform:scale(.99)}.lang-opt:disabled{opacity:.6;cursor:default}.lang-opt:focus-visible{outline:none;box-shadow:0 0 0 2px var(--primary-ring)}.lang-name{flex:1;font-size:15px;font-weight:600}@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.gen-spin{animation:spin .7s linear infinite!important}.sk{animation:shimmer 1.4s infinite!important}.livedot{animation:live 1.6s ease-in-out infinite!important}.typing i{animation:blink 1.2s infinite!important}}