:root{--bg:#f6f5f2;--surface:#fff;--surface-2:#efeee9;--text:#1c1d21;--muted:#6a6c73;--line:#dddbd3;--accent:#2f5bd8;--accent-text:#fff;--ok:#1d7a46;--warn:#9a5b00;--bad:#b3261e;--exp:#6b3fb5;--ai:#0c6b74;--info-bg:#eaf0ff;--warn-bg:#fff4e0;--bad-bg:#fdecea;--ok-bg:#e7f5ec;--radius:12px;--shadow:0 1px 2px #0000000f, 0 2px 8px #0000000d;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#121316;--surface:#1b1d21;--surface-2:#24262b;--text:#ececef;--muted:#9a9ca4;--line:#33363c;--accent:#7c9cff;--accent-text:#0b0d12;--ok:#5ccf8e;--warn:#f0b45a;--bad:#ff8a80;--exp:#c4a4ff;--ai:#63d1da;--info-bg:#1c2540;--warn-bg:#3a2c12;--bad-bg:#3d1d1b;--ok-bg:#16301f;--shadow:none}}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%;font:16px/1.45 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;overflow-x:hidden}a{color:var(--accent)}code,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85em}h1{overflow-wrap:anywhere;margin:0;font-size:1.25rem;line-height:1.25}h2{margin:1.2rem 0 .5rem;font-size:1.1rem}h3{margin:0 0 .5rem;font-size:1rem}h4{margin:.6rem 0 .3rem;font-size:.95rem}.muted{color:var(--muted)}.small{font-size:.85rem}.center{text-align:center}.ok-text{color:var(--ok)}.warn-text{color:var(--warn)}.en{font-style:italic}.page{max-width:680px;padding:calc(env(safe-area-inset-top) + 8px) 16px calc(env(safe-area-inset-bottom) + 32px);margin:0 auto}.page.narrow{max-width:420px}.page-head{grid-template-columns:40px 1fr auto;align-items:center;gap:8px;min-height:44px;margin:4px 0 12px;display:grid}.back,.back-spacer{width:40px;height:40px;color:var(--text);border-radius:50%;justify-content:center;align-items:center;font-size:1.4rem;text-decoration:none;display:inline-flex}.back:active{background:var(--surface-2)}.head-actions{align-items:center;gap:6px;display:flex}.btn{appearance:none;border:1px solid var(--line);background:var(--surface);color:var(--text);font:inherit;cursor:pointer;text-align:center;border-radius:10px;justify-content:center;align-items:center;gap:6px;min-height:44px;padding:10px 14px;font-size:.95rem;line-height:1.2;text-decoration:none;display:inline-flex}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:600}.btn.danger{color:var(--bad);border-color:color-mix(in srgb, var(--bad) 40%, var(--line));background:0 0}.btn.ghost{background:0 0}.btn.small{min-height:34px;padding:6px 10px;font-size:.85rem}.btn.block{width:100%;margin:8px 0;display:flex}.btn.big{min-height:56px;font-size:1.1rem}.btn.on{background:var(--info-bg);border-color:var(--accent);color:var(--accent)}.btn.icon{width:48px;padding:0;font-size:1.1rem}.row{align-items:center;gap:8px;margin:8px 0;display:flex}.row.wrap{flex-wrap:wrap}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin:12px 0;padding:14px}.notice{border-radius:10px;flex-wrap:wrap;align-items:center;gap:8px;margin:10px 0;padding:10px 12px;font-size:.92rem;display:flex}.notice.info{background:var(--info-bg)}.notice.warn{background:var(--warn-bg)}.notice.error{background:var(--bad-bg);color:var(--bad)}.notice.ok{background:var(--ok-bg)}.spinner{color:var(--muted);align-items:center;gap:10px;padding:16px 0;display:flex}.spinner .dot{border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;width:14px;height:14px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.chip,.badge{white-space:nowrap;vertical-align:middle;border-radius:999px;padding:2px 9px;font-size:.78rem;font-weight:600;display:inline-block}.chip{background:var(--surface-2);color:var(--muted)}.chip.ok{background:var(--ok-bg);color:var(--ok)}.chip.bad{background:var(--bad-bg);color:var(--bad)}.chip.warn{background:var(--warn-bg);color:var(--warn)}.chip.info,.chip.busy{background:var(--info-bg);color:var(--accent)}.badge{background:var(--surface-2);color:var(--muted);font-weight:500}.badge.exp{background:color-mix(in srgb, var(--exp) 15%, transparent);color:var(--exp)}.badge.ai{background:color-mix(in srgb, var(--ai) 15%, transparent);color:var(--ai)}.badge.warn{background:var(--warn-bg);color:var(--warn)}.badge.ok{background:var(--ok-bg);color:var(--ok)}.form{flex-direction:column;gap:12px;display:flex}label{flex-direction:column;gap:4px;font-size:.92rem;display:flex}label.check{flex-direction:row;align-items:flex-start;gap:10px}label.check input{flex:none;width:20px;height:20px;margin-top:3px}input[type=text],input[type=url],input[type=password],textarea,select{font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:10px;width:100%;min-width:0;padding:10px 12px;font-size:16px}input[type=file]{max-width:100%;font-size:.9rem}textarea{resize:vertical}section h2{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.login-card{margin-top:12vh}.login-card h1{margin-bottom:6px;font-size:1.6rem}.song-list{flex-direction:column;gap:10px;margin:12px 0;padding:0;list-style:none;display:flex}.song-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);color:var(--text);box-shadow:var(--shadow);gap:12px;padding:10px;text-decoration:none;display:flex}.song-card .poster{background:var(--surface-2);width:56px;height:84px;color:var(--muted);border-radius:8px;flex:none;justify-content:center;align-items:center;font-size:1.5rem;display:flex;overflow:hidden}.song-card .poster img{object-fit:cover;width:100%;height:100%}.song-card .info{flex-direction:column;gap:4px;min-width:0;display:flex}.song-card .title{overflow-wrap:anywhere;font-weight:600}.song-card .meta{flex-wrap:wrap;align-items:center;gap:8px;font-size:.85rem;display:flex}.char-grid{grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px;display:grid}.char-pick{appearance:none;font:inherit;color:var(--text);background:var(--surface);border:2px solid var(--line);border-radius:var(--radius);cursor:pointer;flex-direction:column;align-items:center;gap:4px;min-width:0;padding:6px;display:flex}.char-pick.selected{border-color:var(--accent);background:var(--info-bg)}.char-pick .name{text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:.85rem;font-weight:600;overflow:hidden}.thumb{background:var(--surface-2);width:64px;height:96px;color:var(--muted);border-radius:8px;justify-content:center;align-items:center;font-size:1.6rem;display:flex;overflow:hidden}.thumb img{object-fit:cover;width:100%;height:100%}.portrait-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;margin:10px 0;display:grid}.portrait-opt{background:var(--surface);border:2px solid var(--line);border-radius:var(--radius);cursor:pointer;flex-direction:column;gap:6px;margin:0;padding:6px;display:flex}.portrait-opt.selected{border-color:var(--accent)}.portrait-opt.original{cursor:default}.portrait-opt input{opacity:0;pointer-events:none;position:absolute}.portrait-opt img{aspect-ratio:2/3;object-fit:cover;background:var(--surface-2);border-radius:8px;width:100%}.portrait-opt.original img{object-fit:contain}.portrait-opt figcaption{flex-wrap:wrap;align-items:center;gap:4px;font-size:.82rem;display:flex}.face-boxes{max-width:100%;display:inline-block;position:relative}.face-boxes img{border-radius:8px;max-width:100%;display:block}.face-box{border:2px solid var(--accent);color:#fff;cursor:pointer;background:#2f5bd826;border-radius:6px;font-weight:700;position:absolute}.copyable{background:var(--surface-2);border-radius:10px;flex-direction:column;gap:6px;margin:6px 0;padding:10px;display:flex}.copyable code{white-space:pre-wrap;word-break:break-all;-webkit-user-select:all;user-select:all}.copyable .btn{align-self:flex-start}.progress{background:var(--surface-2);border-radius:999px;height:8px;margin:8px 0;overflow:hidden}.progress>div{background:var(--accent);height:100%;transition:width .4s}.stages{margin:8px 0;padding:0;font-size:.9rem;list-style:none}.stages li{color:var(--muted);padding:3px 0 3px 24px;position:relative}.stages li:before{content:"○";position:absolute;left:4px}.stages li.done{color:var(--text)}.stages li.done:before{content:"✓";color:var(--ok)}.stages li.cur{color:var(--accent);font-weight:600}.stages li.cur:before{content:"●"}.render-opt{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:10px 0;display:flex}.render-opt>div{min-width:0}.render-opt .btn{flex:none}.danger-zone{border-top:1px dashed var(--line);margin-top:24px;padding-top:12px}.song-info{margin:12px 0}.player{--vbox-h:58vh;margin:0 0 12px}.video-box{border-radius:var(--radius);aspect-ratio:2/3;background:#000;width:min(100%,38.6667vh);max-height:58vh;margin:0 auto;position:relative;overflow:hidden}.player>.video-box{z-index:4;width:min(100%, calc(var(--vbox-h) * 2 / 3));max-height:var(--vbox-h);box-shadow:0 0 0 6px var(--bg);position:sticky;top:0}.player .lyrics .line,.player .lyrics .idle-row,.player .sounds-row{scroll-margin-top:calc(var(--vbox-h) + 12px)}@media (max-width:700px){.player{--vbox-h:40vh}}.video-box video{object-fit:contain;transform-origin:0 0;will-change:transform;width:100%;height:100%;display:block;position:absolute;inset:0}.video-box.practice{width:min(100%,26.6667vh);max-height:40vh}.video-box.solo video{opacity:0}.solo-cover{text-align:center;color:#fff;background:#1b1d21;justify-content:center;align-items:center;padding:16px;font-weight:600;display:flex;position:absolute;inset:0}.overlay{pointer-events:none;flex-wrap:wrap;gap:6px;display:flex;position:absolute;left:8px;right:8px}.overlay.top{top:8px}.overlay.bottom{bottom:8px}.overlay .badge{color:#fff;background:#0009}.pill{color:#fff;background:#000000a6;border-radius:999px;padding:3px 10px;font-size:.78rem}.pill.idle{background:#9a5b00d9}.rec{color:#ff5a4f;background:#0009;border-radius:999px;padding:2px 8px;font-size:.85rem;font-weight:700}.avatar-note{text-align:center;margin:6px 0}.controls{flex-wrap:wrap;align-items:center;gap:8px;margin:8px 0;display:flex}.controls .time{font-variant-numeric:tabular-nums;color:var(--muted);flex:1;font-size:.9rem}.seg{border:1px solid var(--line);border-radius:10px;display:inline-flex;overflow:hidden}.seg button{appearance:none;background:var(--surface);color:var(--text);font:inherit;cursor:pointer;border:0;min-height:40px;padding:8px 12px;font-size:.9rem}.seg button+button{border-left:1px solid var(--line)}.seg button.on{background:var(--accent);color:var(--accent-text)}.seg button:disabled{opacity:.4}.practice-links .btn{flex:140px}.tabs{border-bottom:1px solid var(--line);margin:12px 0 8px;display:flex}.tabs button{appearance:none;font:inherit;color:var(--muted);cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;min-height:44px;padding:10px 14px}.tabs button.on{color:var(--text);border-color:var(--accent);font-weight:600}.lyrics{flex-direction:column;gap:2px;display:flex}.line{border-radius:8px;align-items:baseline;gap:8px;padding:6px 4px;display:flex}.line.cur{background:var(--info-bg)}.line.disabled{opacity:.45}.line-time{appearance:none;color:var(--muted);font:inherit;font-variant-numeric:tabular-nums;cursor:pointer;text-align:left;background:0 0;border:0;flex:none;width:40px;padding:2px;font-size:.78rem}.words{flex-wrap:wrap;gap:2px 4px;min-width:0;display:flex}.word{appearance:none;font:inherit;color:var(--text);cursor:pointer;background:0 0;border:0;border-radius:5px;padding:2px 3px}.word.target{-webkit-text-decoration:underline dotted color-mix(in srgb, var(--accent) 60%, transparent);text-decoration:underline dotted color-mix(in srgb, var(--accent) 60%, transparent);text-underline-offset:3px}.word.cur{background:var(--accent);color:var(--accent-text)}.word:disabled{cursor:default}.idle-row{color:var(--warn);padding:4px 4px 4px 52px;font-size:.82rem}.idle-row.cur{background:var(--warn-bg);border-radius:8px}.sound-class{margin:14px 0}.sound-group{border-top:1px solid var(--line);padding:8px 0}.sg-head{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.sg-head .btn{margin-left:auto}.occ{flex-wrap:wrap;gap:4px;margin-top:6px;display:flex}.occ-btn{appearance:none;border:1px solid var(--line);background:var(--surface);color:var(--text);min-width:32px;min-height:32px;font:inherit;cursor:pointer;border-radius:6px;font-size:.8rem}.occ-btn.dim{opacity:.55;border-style:dashed}.setup-status{text-align:center;background:var(--surface-2);border-radius:10px;margin:10px 0;padding:12px;font-weight:600}.setup-status.ok{background:var(--ok-bg);color:var(--ok)}.setup-status.warn{background:var(--warn-bg);color:var(--warn)}.setup-status.small{padding:6px;font-size:.85rem}.calib-run{text-align:center;padding:16px 0}.calib-step{color:var(--muted);font-size:.9rem}.calib-cue{justify-content:center;align-items:center;min-height:4.5em;margin:12px 0 18px;font-size:1.5rem;font-weight:700;display:flex}.calib-results{margin:0;padding:0;list-style:none}.calib-results li{border-top:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:6px;padding:6px 0;display:flex}.calib-results li.ok span:first-child{color:var(--ok)}.calib-results li.bad span:first-child{color:var(--bad)}.calib-results .btn{margin-left:auto}.karaoke{text-align:center;min-height:1.6em;margin:10px 0;font-size:1.15rem}.karaoke .cur{color:var(--accent);font-weight:700}.dev-info{background:var(--surface-2);word-break:break-word;border-radius:8px;padding:8px}.finding h3{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.evidence{padding-left:18px;font-size:.88rem}.evidence li{margin:4px 0}.exercise{border-top:1px solid var(--line);margin-top:10px;padding-top:6px}.ladder{padding-left:20px}.ladder li{margin:8px 0}.ladder .btn{margin-top:4px}.items{flex-wrap:wrap;gap:6px;margin:4px 0;display:flex}.item{background:var(--surface-2);border-radius:6px;padding:2px 8px;font-size:.9rem}.table-wrap{max-width:100%;overflow-x:auto}table.coverage{border-collapse:collapse;table-layout:fixed;width:100%;margin:8px 0;font-size:.85rem}table.coverage th:first-child,table.coverage td:first-child{width:40%}table.coverage td,table.coverage th{overflow-wrap:anywhere}table.coverage th,table.coverage td{text-align:left;border-top:1px solid var(--line);vertical-align:top;padding:6px 4px}table.coverage th{color:var(--muted);font-size:.72rem;font-weight:500}.attempts{padding:0;list-style:none}.attempts li{flex-direction:column;align-items:flex-start;gap:6px;display:flex}details summary{cursor:pointer;padding:6px 0}
