:root{--bg:#0c0e12;--panel:#151922;--panel-2:#1d222d;--line:#2a3140;--text:#e8ecf4;--dim:#8b94a7;--dim-2:#5b6478;--accent:#ffd479;--accent-dim:#7a6537;--danger:#ff6b6b;--ok:#6bd6a0;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none;font-family:Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,Malgun Gothic,system-ui,sans-serif}button{font:inherit;color:inherit;background:var(--panel-2);border:1px solid var(--line);cursor:pointer;white-space:nowrap;border-radius:10px;padding:9px 14px;transition:background .12s,border-color .12s,color .12s}button:hover:not(:disabled){background:#262d3b}button:disabled{opacity:.4;cursor:default}button.primary{background:var(--accent);border-color:var(--accent);color:#201a08;font-weight:700}button.primary:hover:not(:disabled){background:#ffe0a0}button.ghost{background:0 0}button.on{background:var(--accent);border-color:var(--accent);color:#201a08;font-weight:700}input,textarea{font:inherit;color:var(--text);background:var(--panel-2);border:1px solid var(--line);border-radius:10px;width:100%;padding:10px 12px}input:focus,textarea:focus{outline:2px solid var(--accent-dim);outline-offset:1px}textarea{resize:vertical;line-height:1.6}.app{flex-direction:column;height:100%;display:flex}.topbar{border-bottom:1px solid var(--line);background:var(--panel);flex:none;align-items:center;gap:12px;padding:10px 16px;display:flex}.topbar h1{letter-spacing:-.2px;margin:0;font-size:17px;font-weight:700}.topbar .spacer{flex:1}.badge{background:var(--panel-2);color:var(--dim);border:1px solid var(--line);border-radius:999px;padding:3px 8px;font-size:11px}.badge.yt{color:#ff9a9a;background:#241a1a;border-color:#4a2a2a}.badge.file{color:#9ad0ff;background:#16202b;border-color:#26405a}.segmented{background:var(--panel-2);border:1px solid var(--line);border-radius:10px;gap:3px;padding:3px;display:flex}.segmented button{color:var(--dim);background:0 0;border:none;border-radius:8px;padding:6px 14px;font-size:14px}.segmented button.on{background:var(--accent);color:#201a08}.library{flex:1;padding:24px;overflow-y:auto}.songs{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;max-width:1200px;margin:0 auto;display:grid}.song-card{background:var(--panel);border:1px solid var(--line);cursor:pointer;text-align:left;border-radius:14px;flex-direction:column;gap:10px;padding:16px;display:flex}.song-card:hover{border-color:var(--accent-dim);background:var(--panel-2)}.song-card .name{font-size:16px;font-weight:700;line-height:1.35}.song-card .meta{color:var(--dim);align-items:center;gap:8px;font-size:12px;display:flex}.progress{background:var(--panel-2);border-radius:99px;height:4px;overflow:hidden}.progress i{background:var(--accent);height:100%;display:block}.empty{text-align:center;color:var(--dim);max-width:480px;margin:0 auto;padding:70px 20px;line-height:1.75}.add{flex:1;padding:24px;overflow-y:auto}.add-inner{flex-direction:column;gap:18px;max-width:640px;margin:0 auto;display:flex}.field{flex-direction:column;gap:7px;display:flex}.field label{color:var(--dim);font-size:13px;font-weight:600}.hint{color:var(--dim-2);font-size:12px;line-height:1.6}.drop{border:1.5px dashed var(--line);text-align:center;color:var(--dim);cursor:pointer;background:var(--panel);border-radius:14px;padding:30px}.drop.over{border-color:var(--accent);color:var(--accent);background:#1c1a12}.error{color:var(--danger);font-size:13px}.notice{color:#ffb3b3;background:#241a1a;border:1px solid #4a2a2a;border-radius:10px;padding:12px 14px;font-size:13px;line-height:1.6}.stage{flex:1;grid-template-rows:auto minmax(0,1fr);grid-template-columns:minmax(0,1fr) 380px;min-height:0;display:grid}.lyrics-pane{scroll-behavior:smooth;grid-area:1/1/span 2;min-width:0;padding:22vh 32px 40vh;overflow-y:auto}.lyrics-pane.sync-pane{padding:20px 32px 40vh}.lines{flex-direction:column;max-width:900px;margin:0 auto;display:flex}.line{cursor:pointer;border:1px solid #0000;border-radius:10px;align-items:baseline;gap:14px;padding:8px 12px;display:flex}.line .tc{text-align:right;font-variant-numeric:tabular-nums;width:62px;color:var(--dim-2);flex:none;font-size:13px}.line .tx{color:var(--dim);font-size:26px;line-height:1.45;transition:color .15s,font-size .15s}.line.blank{min-height:16px}.line.stamped .tc{color:var(--accent-dim)}.line:hover{background:var(--panel)}.line.active .tx{color:var(--text)}.line.cursor{border-color:var(--accent);background:#1a1811}.line.cursor .tc{color:var(--accent)}.practice .line .tx{color:var(--dim-2);font-size:30px}.practice .line.near .tx{color:var(--dim)}.practice .line.active .tx{color:var(--accent);font-size:42px;font-weight:700}.practice .line .tc{opacity:0}.practice .line:hover .tc{opacity:1}.player-box{background:var(--panel);border-left:1px solid var(--line);grid-area:1/2;justify-content:center;display:flex}.side{border-left:1px solid var(--line);background:var(--panel);grid-area:2/2;min-height:0;overflow-y:auto}.sheet-grip,.sheet-scrim,.mobile-bar{display:none}.video-box{aspect-ratio:16/9;background:#000;flex:none;width:100%}.video-box iframe,.video-box>div{border:0;width:100%;height:100%}.file-box{aspect-ratio:16/9;color:var(--dim-2);background:#0a0c10;flex-direction:column;justify-content:center;align-items:center;gap:6px;font-size:13px;display:flex}.side-body{flex-direction:column;gap:16px;padding:16px;display:flex}.group{flex-direction:column;gap:8px;display:flex}.group h3{color:var(--dim);letter-spacing:.3px;margin:0;font-size:12px;font-weight:700}.row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.grow{flex:1}.rates{grid-template-columns:repeat(4,1fr);gap:6px;display:grid}.rates button{padding:7px 0;font-size:13px}.ab{grid-template-columns:1fr 1fr;gap:6px;display:grid}.ab-info{color:var(--dim);font-variant-numeric:tabular-nums;font-size:12px}.marks{flex-direction:column;gap:5px;display:flex}.mark{align-items:center;gap:6px;display:flex}.mark button.jump{text-align:left;flex:1;padding:7px 10px;font-size:13px}.mark .del{color:var(--dim);padding:6px 9px;font-size:12px}.tips{color:var(--dim-2);font-size:11.5px;line-height:1.9}.tips kbd{background:var(--panel-2);border:1px solid var(--line);color:var(--dim);border-bottom-width:2px;border-radius:5px;padding:1px 5px;font-family:inherit;font-size:11px}.transport{border-top:1px solid var(--line);background:var(--panel);flex:none;align-items:center;gap:14px;padding:10px 16px;display:flex}.time{font-variant-numeric:tabular-nums;color:var(--dim);flex:none;font-size:13px}.scrub{cursor:pointer;flex:1;align-items:center;height:26px;display:flex;position:relative}.scrub .track{background:var(--panel-2);border-radius:99px;width:100%;height:5px;position:relative;overflow:hidden}.scrub .fill{background:var(--accent);position:absolute;top:0;bottom:0;left:0}.scrub .ab-range{background:#6bd6a066;position:absolute;top:0;bottom:0}.play-btn{border-radius:50%;flex:none;place-items:center;width:46px;height:46px;font-size:15px;display:grid}.sync-banner{z-index:5;background:var(--bg);text-align:center;color:var(--dim);border-bottom:1px solid var(--line);margin:-20px 0 6px;padding:14px 0;font-size:13.5px;position:sticky;top:-20px}.sync-banner strong{color:var(--accent)}@media (width<=900px){.stage{flex-direction:column;display:flex}.player-box{border-left:none;border-bottom:1px solid var(--line);flex:none;order:0}.lyrics-pane{flex:1;order:1;min-height:0;padding:18px 14px 26px}.side{z-index:30;border-left:none;border-top:1px solid var(--line);width:auto;max-height:78vh;padding-bottom:env(safe-area-inset-bottom);border-radius:18px 18px 0 0;transition:transform .22s;position:fixed;bottom:0;left:0;right:0;transform:translateY(101%);box-shadow:0 -12px 40px #00000080}.side.open{transform:none}.sheet-scrim{z-index:29;background:#0000008c;display:block;position:fixed;inset:0}.sheet-grip{text-align:center;cursor:pointer;padding:10px 0 2px;display:block}.sheet-grip span{background:var(--line);border-radius:99px;width:44px;height:4px;display:inline-block}.mobile-bar{border-top:1px solid var(--line);background:var(--panel);flex:none;align-items:center;gap:8px;padding:8px 12px;display:flex}.mobile-bar button{padding:13px 14px;font-size:15px}.side .stamp-group{display:none}.topbar{gap:8px;padding:8px 12px}.topbar h1{text-overflow:ellipsis;white-space:nowrap;font-size:15px;overflow:hidden}.topbar .badge,.topbar .time{display:none}.segmented button{padding:7px 12px}.sync-banner{margin:-18px 0 4px;padding:10px 0;font-size:12.5px}.line{gap:10px;padding:10px}.line .tc{width:50px;font-size:12px}.line .tx,.practice .line .tx{font-size:21px}.practice .line.near .tx{font-size:22px}.practice .line.active .tx{font-size:29px}.practice .line .tc{display:none}.transport{padding:8px 12px calc(8px + env(safe-area-inset-bottom));gap:10px}.play-btn{width:42px;height:42px}.add,.library{padding:16px 14px 40px}.songs{grid-template-columns:1fr}}@media (width<=900px) and (orientation:landscape){.stage{flex-flow:wrap}.player-box{border-bottom:none;border-left:1px solid var(--line);order:1;align-items:flex-start;padding:8px}.video-box{aspect-ratio:16/9;width:auto;height:min(46vh,220px)}.lyrics-pane{flex:1;order:0;padding:12px 14px 20px}.practice .line.active .tx{font-size:26px}}.stamp-btn{padding:16px 0;font-size:16px}.hint kbd{background:var(--panel-2);border:1px solid var(--line);color:var(--dim);border-bottom-width:2px;border-radius:5px;padding:1px 5px;font-family:inherit;font-size:11px}