:root{--bg:#0d1022;--bg-2:#141833;--card:#1a2044;--card-2:#222a55;--text:#f0f3ff;--muted:#98a2cc;--line:#2b3462;--accent:#6c8cff;--accent-2:#9a6cff;--good:#3ddc97;--bad:#ff5d73;--warn:#ffc857;--radius:14px;--shadow:0 10px 30px #04061073;--shadow-sm:0 4px 14px #04061052;--glow-accent:0 0 0 1px #6c8cff59, 0 6px 24px #6c8cff38;--font-bopomofo:"Noto Sans TC", "PMingLiU", "MingLiU", sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%}body{color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none;-webkit-user-select:none;user-select:none;background:radial-gradient(1100px 480px at 50% -8%, #6c8cff29, transparent 62%), radial-gradient(820px 420px at 88% 112%, #9a6cff1a, transparent 60%), var(--bg);background-attachment:fixed;margin:0;font-family:-apple-system,BlinkMacSystemFont,Noto Sans TC,PingFang TC,Microsoft JhengHei,system-ui,sans-serif}button{font-family:inherit}input{-webkit-user-select:text;user-select:text;font-family:inherit}input::placeholder{color:#98a2cc80}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#3a4480}.app{max-width:560px;min-height:100%;padding-bottom:env(safe-area-inset-bottom);flex-direction:column;margin:0 auto;animation:.18s appin;display:flex}@keyframes appin{0%{opacity:0}to{opacity:1}}.topbar{-webkit-backdrop-filter:blur(14px)saturate(1.3);z-index:20;background:#0d1022d1;border-bottom:1px solid #2b3462b3;align-items:center;gap:10px;padding:14px 16px;display:flex;position:sticky;top:0}.topbar .title{letter-spacing:.2px;flex:1;font-size:17px;font-weight:700}.icon-btn{background:linear-gradient(180deg, #ffffff0d, transparent 60%), var(--card);border:1px solid var(--line);color:var(--text);cursor:pointer;width:38px;height:38px;box-shadow:var(--shadow-sm);border-radius:11px;place-items:center;font-size:18px;transition:transform 80ms,border-color .12s;display:grid}.icon-btn:active{border-color:var(--accent);transform:scale(.94)}.icon-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.card{background:linear-gradient(180deg, #ffffff09, #fff0 45%), var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:16px}.card+.card{margin-top:12px}.muted{color:var(--muted)}.small{font-size:13px}.btn{cursor:pointer;color:#0f1220;background:linear-gradient(135deg, var(--accent), var(--accent-2));border:none;border-radius:12px;width:100%;padding:13px 18px;font-size:15px;font-weight:600;transition:transform 80ms,box-shadow .12s;box-shadow:0 6px 18px #6c8cff47,inset 0 1px #ffffff38}.btn:active{transform:scale(.97)translateY(1px);box-shadow:0 3px 10px #6c8cff38}.btn:disabled{opacity:.5;box-shadow:none}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn.secondary{background:linear-gradient(180deg, var(--card-2), var(--card));color:var(--text);border:1px solid var(--line);box-shadow:inset 0 1px #ffffff0f}.btn.ghost{color:var(--muted);border:1px dashed var(--line);box-shadow:none;background:0 0}.btn.good{background:linear-gradient(135deg, var(--good), #22b381);box-shadow:0 6px 18px #3ddc9740,inset 0 1px #ffffff40}.mode-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.mode-card{background:linear-gradient(180deg, #ffffff0a, #fff0 50%), var(--card);border:2px solid var(--line);border-radius:var(--radius);cursor:pointer;text-align:left;box-shadow:var(--shadow-sm);flex-direction:column;gap:6px;padding:16px 14px;transition:border-color .12s,transform 80ms,box-shadow .12s;display:flex}.mode-card:active{border-color:var(--accent);box-shadow:var(--glow-accent);transform:scale(.97)}.mode-card.active{border-color:var(--accent);background:linear-gradient(180deg, #6c8cff1f, #6c8cff00 60%), var(--card-2);box-shadow:var(--glow-accent)}.mode-card .ico{background:#6c8cff21;border:1px solid #6c8cff47;border-radius:12px;place-items:center;width:44px;height:44px;font-size:24px;display:grid}.mode-card .name{font-size:15px;font-weight:700}.mode-card .desc{color:var(--muted);font-size:12px;line-height:1.4}.practice{flex-direction:column;flex:1;display:flex}.progress{background:var(--bg-2);border-radius:6px;height:8px;margin:12px 16px 0;overflow:hidden;box-shadow:inset 0 1px 3px #00000073}.progress>i{background:linear-gradient(90deg, var(--accent), var(--accent-2));height:100%;transition:width .2s;display:block;box-shadow:0 0 12px #6c8cff8c}.stimulus{text-align:center;padding:22px 16px 8px}.stimulus .zh{text-shadow:0 2px 28px #6c8cff47;font-size:44px;font-weight:700;line-height:1.2}.stimulus .bo{font-family:var(--font-bopomofo);color:var(--accent);letter-spacing:2px;text-shadow:0 0 18px #6c8cff59;min-height:30px;margin-top:8px;font-size:26px}.stimulus .en-target{letter-spacing:2px;text-shadow:0 2px 28px #6c8cff47;font-size:40px;font-weight:700}.stimulus .hint{color:var(--warn);letter-spacing:3px;min-height:26px;margin-top:6px;font-size:22px}.stimulus .example{color:var(--muted);-webkit-user-select:text;user-select:text;margin-top:10px;font-size:13px}.answer-line{background:var(--bg-2);border:2px solid var(--line);letter-spacing:2px;border-radius:12px;flex-wrap:wrap;align-items:center;gap:2px;min-height:56px;margin:8px 16px 0;padding:10px 14px;font-size:26px;transition:border-color .12s,box-shadow .12s;display:flex;box-shadow:inset 0 2px 8px #00000059}.answer-line.correct{border-color:var(--good);box-shadow:inset 0 2px 8px #00000059,0 0 18px #3ddc9740}.answer-line.wrong{border-color:var(--bad);box-shadow:inset 0 2px 8px #00000059,0 0 18px #ff5d7340}.answer-line .ch{text-align:center;min-width:16px}.answer-line .ch.done{color:var(--muted)}.answer-line .ch.cur{color:var(--text);background:#6c8cff40;border-radius:4px;box-shadow:0 0 10px #6c8cff59}.answer-line .ch.bad{color:var(--bad)}.bo-answer{flex-wrap:wrap;justify-content:center;gap:8px;margin-top:6px;display:flex}.bo-answer span{font-family:var(--font-bopomofo);background:var(--bg-2);border:1px solid var(--line);color:var(--muted);border-radius:8px;padding:4px 8px;font-size:22px}.bo-answer span.done{color:var(--good);border-color:var(--good);box-shadow:0 0 10px #3ddc9733}.bo-answer span.cur{color:var(--text);border-color:var(--accent);background:#6c8cff2e}.bo-answer span.bad{color:var(--bad);border-color:var(--bad)}.live-stats{gap:8px;margin:14px 16px 0;display:flex}.live-stats .pill{background:linear-gradient(180deg, #ffffff0a, #fff0 55%), var(--card);border:1px solid var(--line);text-align:center;box-shadow:var(--shadow-sm);border-radius:12px;flex:1;padding:10px}.live-stats .pill .v{background:linear-gradient(135deg, var(--text), #bcc9ff);color:#0000;-webkit-background-clip:text;background-clip:text;font-size:20px;font-weight:700}.live-stats .pill .l{color:var(--muted);margin-top:2px;font-size:11px}.vk{padding:12px 10px 18px}.vk-row{justify-content:center;gap:6px;margin-bottom:6px;display:flex}.vk-row.center{justify-content:center}.key{background:linear-gradient(180deg, #ffffff0f, #fff0 55%), var(--card);border:1px solid var(--line);cursor:pointer;min-width:34px;height:46px;color:var(--text);border-radius:10px;place-items:center;font-size:19px;transition:transform 60ms,background 60ms;display:grid;box-shadow:0 2px #0000004d,inset 0 1px #ffffff12}.key:active{transform:scale(.9)}.key.wide{min-width:90px;font-size:14px}.key.tone{background:linear-gradient(180deg, #9a6cff3d, #9a6cff12), var(--card);border-color:#5a48a8}.key.tone:active{background:#9a6cff57}.key.final{background:linear-gradient(180deg, #3ddc972e, #3ddc970d), var(--card);border-color:#2f6f63}.key.initial{background:linear-gradient(180deg, #ffffff0f, #fff0 55%), var(--card)}.key.flash{background:linear-gradient(135deg, var(--accent), var(--accent-2));color:#0f1220;box-shadow:0 0 16px #6c8cff99}.report-hero{text-align:center;padding:8px 0 4px}.report-hero .big{letter-spacing:-1px;background:linear-gradient(135deg, #a8bbff, var(--accent) 45%, var(--accent-2));color:#0000;filter:drop-shadow(0 6px 24px #6c8cff59);-webkit-background-clip:text;background-clip:text;font-size:64px;font-weight:800}.report-hero .cap{color:var(--muted);margin-top:2px;font-size:13px}.stat-row{grid-template-columns:1fr 1fr 1fr;gap:10px;display:grid}.stat-box{background:linear-gradient(180deg, #ffffff0a, #fff0 55%), var(--card);border:1px solid var(--line);text-align:center;box-shadow:var(--shadow-sm);border-radius:12px;padding:12px}.stat-box .v{font-size:24px;font-weight:700}.stat-box .l{color:var(--muted);margin-top:2px;font-size:11px}.word-chip{background:var(--bg-2);border:1px solid var(--line);border-radius:10px;align-items:center;gap:6px;padding:6px 10px;font-size:13px;display:inline-flex}.word-chip .en{color:var(--muted)}.word-chip.new{background:#3ddc9714;border-color:#3ddc978c;box-shadow:0 0 0 1px #3ddc9740,0 0 14px #3ddc9726}.rater{background:var(--bg-2);border:1px solid var(--line);border-radius:12px;justify-content:space-between;align-items:center;margin-top:8px;padding:10px 12px;display:flex}.rater .zh{font-size:17px;font-weight:700}.rater .en{color:var(--muted);font-size:13px}.rater .ex{color:var(--muted);-webkit-user-select:text;user-select:text;margin-top:2px;font-size:11px}.seg{gap:4px;display:flex}.seg button{background:var(--card);border:1px solid var(--line);color:var(--text);cursor:pointer;border-radius:8px;min-width:26px;height:26px;font-size:12px;transition:background .1s}.seg button:active{transform:scale(.92)}.seg button.on{background:linear-gradient(135deg, var(--accent), var(--accent-2));color:#0f1220;border-color:#0000;font-weight:700}.seg button.warn.on{background:linear-gradient(135deg, var(--warn), #f0a83c);border-color:var(--warn)}.rater .correct-btn{background:linear-gradient(135deg, var(--good), #22b381);color:#06251b;cursor:pointer;border:none;border-radius:8px;padding:6px 12px;font-size:12px;font-weight:700;box-shadow:0 3px 10px #3ddc9740}.rater .correct-btn:active{transform:scale(.94)}.upload-drop{border:2px dashed var(--line);border-radius:var(--radius);text-align:center;color:var(--muted);background:#ffffff04;padding:24px}.upload-drop:active{border-color:var(--accent);background:#6c8cff0d}.tag-row{flex-wrap:wrap;gap:6px;display:flex}.tag{background:var(--card);border:1px solid var(--line);cursor:pointer;color:var(--text);border-radius:20px;padding:6px 12px;font-size:12px;transition:background .12s,transform 80ms}.tag:active{transform:scale(.95)}.tag.active{background:linear-gradient(135deg, var(--accent), var(--accent-2));color:#0f1220;border-color:#0000;font-weight:700;box-shadow:0 4px 14px #6c8cff4d}.list-item{background:linear-gradient(180deg, #ffffff08, #fff0 55%), var(--card);border:1px solid var(--line);border-radius:10px;justify-content:space-between;align-items:center;margin-top:8px;padding:10px 14px;font-size:14px;display:flex}.list-item .zh{font-weight:600}.list-item .meta{color:var(--muted);font-size:12px}.field{margin-bottom:14px}.field label{color:var(--muted);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.field input{border:1px solid var(--line);background:var(--bg-2);width:100%;color:var(--text);border-radius:12px;outline:none;padding:12px 14px;font-size:15px;transition:border-color .15s,box-shadow .15s}.field input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #6c8cff38}.error{color:#ffb9c4;background:#ff5d731f;border:1px solid #ff5d7366;border-radius:10px;margin-bottom:10px;padding:10px 12px;font-size:13px}.or-divider{color:var(--muted);align-items:center;gap:12px;margin:16px 0;font-size:12px;display:flex}.or-divider:before,.or-divider:after{content:"";background:var(--line);flex:1;height:1px}.or-divider{text-align:center}.onb{padding:24px 20px}.onb h2{margin:0 0 8px;font-size:22px}.onb p{color:var(--muted);font-size:14px;line-height:1.6}.steps{gap:6px;margin-top:12px;display:flex}.steps i{background:var(--line);border-radius:3px;flex:1;height:5px;transition:background .2s}.steps i.on{background:linear-gradient(90deg, var(--accent), var(--accent-2));box-shadow:0 0 8px #6c8cff80}.footer-actions{gap:10px;margin-top:16px;display:flex}.footer-actions .btn{flex:1}.section-title{color:var(--muted);letter-spacing:.4px;margin:18px 4px 10px;font-size:13px;font-weight:600}.heatmap{flex-direction:column;gap:4px;display:flex}.heat-row{gap:4px;display:flex}.heat-cell{aspect-ratio:1.6;color:var(--muted);background:var(--card);border-radius:6px;flex:1;place-items:center;font-size:12px;display:grid}.toast{bottom:calc(24px + env(safe-area-inset-bottom));background:var(--card-2);border:1px solid var(--accent);z-index:50;box-shadow:var(--shadow), 0 0 16px #6c8cff40;border-radius:12px;padding:10px 18px;font-size:13px;animation:.2s fadein;position:fixed;left:50%;transform:translate(-50%)}@keyframes fadein{0%{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%)}}.hidden-focus{opacity:0;border:none;outline:none;width:1px;height:1px;position:absolute}.pwabar{z-index:100;background:linear-gradient(90deg, var(--accent), var(--accent-2));width:0;height:3px;position:fixed;top:0;left:0;box-shadow:0 0 10px #6c8cff99}