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i{background:var(--accent);border-radius:4px;flex:1;height:10px}.gap-preview i.mute{border:1.5px dashed var(--warn);background:0 0}.preset-form{gap:8px;display:flex}.preset-form input{border:1px solid var(--line-strong);background:var(--surface-2);min-width:0;min-height:42px;color:var(--text);font:inherit;border-radius:12px;flex:1;padding:0 14px;font-size:16px}.preset-list{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.preset-list li{background:var(--surface-2);border-radius:12px;align-items:center;gap:4px;display:flex}.preset-main{text-align:left;flex-direction:column;flex:1;min-width:0;padding:10px 14px;display:flex}.preset-name{text-overflow:ellipsis;white-space:nowrap;font-weight:600;overflow:hidden}.preset-sub{color:var(--muted);font-size:12.5px}.calibrate{flex-direction:column;gap:12px;display:flex}.shortcuts{grid-template-columns:auto 1fr;gap:8px 16px;margin:0;font-size:14px;display:grid}.shortcuts dt{font-family:var(--font-num);background:var(--surface-2);border:1px solid var(--line);text-align:center;border-radius:6px;padding:1px 8px;font-weight:600}.shortcuts dd{color:var(--text-2);margin:0}.about{text-align:center;color:var(--muted);padding:4px 12px 8px;font-size:12.5px}.flash{pointer-events:none;z-index:40;background:var(--accent);opacity:.18;animation:.18s ease-out forwards flash;position:fixed;inset:0}.flash.strong{opacity:.35}@keyframes flash{to{opacity:0}}@media (width>=600px){.app{border-left:1px solid var(--line);border-right:1px solid var(--line)}}@media (height<=700px){.beat-row{height:84px}.beat.lvl-2 .beat-bar{height:56px}.beat.lvl-1 .beat-bar{height:36px}.metronome-view{gap:10px}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.topbar-end{align-items:center;gap:8px;min-width:0;display:flex}.lang-toggle{border:1px solid 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