.arc{text-align:center;max-width:560px;margin:0 auto;padding-bottom:16px}.arc-stage{justify-content:center;padding:0 8px;display:flex;position:relative}.arc-canvas{border:4px solid var(--ink);box-shadow:0 6px 0 var(--ink);touch-action:none;-webkit-user-select:none;user-select:none;cursor:pointer;background:#fff;border-radius:20px;display:block}.arc-overlay{cursor:pointer;border:3px solid var(--ink);width:min(300px,80%);box-shadow:0 6px 0 var(--ink);background:#fffaf0f2;border-radius:20px;flex-direction:column;gap:10px;padding:18px;display:flex;position:absolute;top:50%;left:50%;translate:-50% -50%}.arc-overlay b{font-size:1.4rem}.arc-overlay span{color:var(--muted);font-weight:600}.arc-overlay .arc-go{color:var(--ink);font-weight:800;animation:1.4s ease-in-out infinite rv-pulse}.arc-overlay.hidden{display:none}.arc-doll{vertical-align:-.2em;width:1.2em;height:1.2em}.mode-icon .arc-doll{width:2.4rem;height:2.4rem}.arc .arc-music{min-width:0;padding:4px 10px;font-size:1.1rem}.arc .arc-music.off{opacity:.6}.arc-songs{flex-direction:column;gap:10px;max-width:560px;margin:12px auto;display:flex}.arc-songs h2{margin:0}.arc-song{justify-content:space-between;align-items:center;gap:10px;padding:12px 16px;font-size:1.1rem;display:flex}.arc-song span{color:var(--muted);font-size:.9rem;font-weight:600}.arc-song-row{gap:8px;display:flex}.arc-song-row .arc-song{flex:1}.arc-listen{min-width:52px;padding:0 12px;font-size:1.2rem}.arc-listen.on{background:var(--yellow,#ffc93c)}.arc-song-row{align-items:center}.arc-song-name{text-align:left;flex-direction:column;flex:1;min-width:0;display:flex}.arc-song-name span{color:var(--muted);font-size:.85rem;font-weight:600}.arc-song-row .arc-keys{flex:none;min-width:0;padding:8px 10px;font-size:1rem}@media (width<=480px){.arc-song-row .arc-keys{padding:6px;font-size:.9rem}}.arc-keys small{font-size:.75em;font-weight:600}