:root{--bg: #f5f6f8;--card: #ffffff;--ink: #1f2430;--muted: #8a90a0;--line: #eceef2;--green: #1dbf73;--green-pressed: #17a863;--green-soft: #e6f8ef;--orange: #ff9f43;--orange-soft: #fff3e6;--purple: #7b61ff;--purple-soft: #efecff;--blue: #3d8bfd;--blue-soft: #e8f1ff;--yellow: #ffc83d;--red: #f0524f;--radius: 16px;--shadow: 0 4px 16px rgba(31, 36, 48, .06), 0 1px 3px rgba(31, 36, 48, .04);--tabbar-h: 64px;--safe-b: env(safe-area-inset-bottom, 0px);--safe-t: env(safe-area-inset-top, 0px);--safe-l: env(safe-area-inset-left, 0px);--safe-r: env(safe-area-inset-right, 0px);color-scheme:light}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Helvetica 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16px;text-align:center;color:var(--muted)}.score-status a{color:var(--green)}.midi-preview{height:calc(100% - 36px);min-height:160px;border-radius:12px;overflow:hidden;background:#1f2430;margin:0 4px}.midi-preview canvas{display:block;width:100%;height:100%}.midi-caption{text-align:center;color:var(--muted);margin:8px 0 0;font-size:14px}.song-actions{flex:none;display:flex;gap:12px;margin-top:12px}.pill{flex:1;min-height:64px;border-radius:999px;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:6px 12px;text-align:center}.pill b{font-size:20px;font-weight:800;letter-spacing:1px}.pill small{font-size:12px;opacity:.92}.pill-green{background:var(--green);box-shadow:0 8px 18px -10px #1dbf73e6}.pill-green:active{background:var(--green-pressed)}.pill-orange{background:var(--orange);box-shadow:0 8px 18px -10px #ff9f43e6}.pill-orange:active{background:#f08a2a}@media (orientation: landscape) and (max-height: 500px){.song-page{padding-top:calc(8px + var(--safe-t));padding-bottom:calc(8px + var(--safe-b))}.song-topbar{min-height:48px;margin-bottom:6px}.tool-btn{flex-direction:row;gap:6px;padding-right:8px}.tool-circle{width:36px;height:36px}.tool-label{font-size:12px}.song-actions{margin-top:8px}.pill{min-height:52px;flex-direction:row;gap:10px}.pill b{font-size:18px}}@media (max-width: 360px){.tool-btn{min-width:42px}.tool-label{display:none}}.stat-tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}.stat-tile{border-radius:var(--radius);padding:14px 10px;display:flex;flex-direction:column;align-items:flex-start;gap:4px;min-width:0}.stat-tile .icon{width:22px;height:22px;margin-bottom:4px}.stat-tile b{font-size:clamp(16px,5.4vw,22px);font-weight:800;white-space:nowrap}.stat-tile span{font-size:13px;color:var(--muted)}.t-orange{background:var(--orange-soft);color:var(--orange)}.t-green{background:var(--green-soft);color:var(--green)}.t-purple{background:var(--purple-soft);color:var(--purple)}.stat-tile b{color:var(--ink)}.record-row{cursor:default}.record-row .spark{flex:none;display:flex}.record-row .best{flex:none;color:var(--green);font-weight:800;font-size:15px;min-width:56px;text-align:right}@media (max-width: 400px){.record-row .spark svg{width:72px}}.settings{padding:6px 16px 16px}.setting{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;border-bottom:1px solid var(--line)}.setting-col{flex-direction:column;align-items:stretch;justify-content:center;padding:12px 0;gap:10px}.setting-label{font-size:16px;font-weight:600;display:flex;flex-direction:column;gap:2px}.setting-col>.setting-label{flex-direction:row;justify-content:space-between}.setting-label small{font-size:12px;color:var(--muted);font-weight:400}.setting-label b{color:var(--green)}.segmented{display:flex;background:#f0f1f4;border-radius:999px;padding:3px}.segmented button{border:0;background:none;min-height:38px;min-width:76px;padding:0 14px;border-radius:999px;font-size:15px;font-weight:600;color:var(--muted)}.segmented button.on{background:var(--green);color:#fff;box-shadow:0 2px 6px #1dbf7359}.switch{-moz-appearance:none;appearance:none;-webkit-appearance:none;flex:none;width:52px;height:30px;border-radius:999px;background:#dcdfe5;position:relative;cursor:pointer;transition:background .15s;margin:0}.switch:after{content:"";position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0003;transition:transform .15s}.switch:checked{background:var(--green)}.switch:checked:after{transform:translate(22px)}.slider{width:100%;accent-color:var(--green);height:32px;margin:0}.import-row{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px}.import-row span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.import-row small{margin-left:8px;color:var(--muted);font-size:12px}.about{text-align:center;color:var(--muted);font-size:12px;margin:24px 0 0}.toast{position:fixed;left:50%;bottom:calc(var(--tabbar-h) + var(--safe-b) + 24px);z-index:200;transform:translate(-50%,12px);opacity:0;pointer-events:none;background:#1f2430e6;color:#fff;padding:12px 20px;border-radius:999px;font-size:15px;max-width:calc(100vw - 48px);text-align:center;transition:opacity .2s,transform .2s}.toast.show{opacity:1;transform:translate(-50%)}.dialog-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:150;background:#1f243073;display:grid;place-items:center;padding:24px}.dialog{background:#fff;border-radius:20px;padding:22px 20px 16px;width:min(340px,100%);box-shadow:0 20px 50px #0003}.dialog-msg{margin:0 0 18px;font-size:16px;line-height:1.5}.dialog-actions{display:flex;gap:10px}.dialog-actions .btn{flex:1}@media (orientation: landscape) and (max-height: 500px){:root{--tabbar-h: 56px}.page-title{font-size:26px}.page-tabbed{padding-top:calc(10px + var(--safe-t))}.quick{margin:12px 0 14px;max-width:520px}.quick-icon{width:48px;height:48px;border-radius:15px}.quick-icon .icon{width:24px;height:24px}.today-time b{font-size:40px}.btn-hero{min-height:56px;margin-top:14px}.tab{flex-direction:row;gap:6px;font-size:13px}.tab .icon{width:22px;height:22px}}.tool-btn.playing .tool-circle{background:var(--green);color:#fff}.tool-btn.playing 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