:root{--bg:#fff;--ink:#17211f;--muted:#62716e;--subtle:#8b9995;--line:#dfe8e5;--surface:#f7fbfa;--surface-strong:#eef8f5;--mint:#61b7a6;--mint-dark:#2f8374;--coral:#f26f5e;--coral-dark:#c94a3a;--wake:#f2b95e;--poop:#d69b2d;--poop-dark:#946519;--pee:#5da8dd;--pee-dark:#2e6f9f;--danger:#c2413b;--shadow:0 14px 30px #1c393414;--font:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;color:var(--ink);background:var(--bg);font-family:var(--font);font-synthesis:none;letter-spacing:0;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html{background:var(--bg);min-height:100%}body{background:linear-gradient(180deg, #eef8f5cc, transparent 260px), var(--bg);min-width:320px;min-height:100svh;margin:0}button,input{font:inherit}button{cursor:pointer;border:0}button:focus-visible,input:focus-visible{outline-offset:3px;outline:3px solid #61b7a659}h1,h2,p{margin:0}#root{min-height:100svh}.app-shell{width:min(100%,760px);min-height:100svh;margin:0 auto;padding:20px 18px 104px}.app-header{justify-content:space-between;align-items:center;gap:16px;padding:6px 0 18px;display:flex}.brand{align-items:center;gap:12px;min-width:0;display:flex}.brand img{width:48px;height:48px;box-shadow:var(--shadow);border-radius:8px}.brand h1{font-size:24px;font-weight:760;line-height:1.1}.brand p{max-width:220px;color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:12px;line-height:1.35;overflow:hidden}.app-header time{color:var(--ink);flex:none;font-size:22px;font-weight:760;line-height:1}.status-strip{border:1px solid var(--line);background:var(--line);box-shadow:var(--shadow);border-radius:8px;grid-template-columns:1.2fr 1fr;gap:1px;margin-bottom:18px;display:grid;overflow:hidden}.status-strip>div{background:#ffffffeb;min-width:0;padding:16px}.status-strip span,.metric span,.insight-row span,.event-row 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span{font-size:30px;font-weight:800;line-height:1;display:block}.quick-action.sleep{background:var(--surface-strong);color:var(--mint-dark)}.quick-action.sleep.is-active{background:#e4f5f0;border-color:#2f837452}.quick-action.feed{color:var(--coral-dark);background:#fff0ed}.quick-action.feed.is-active{background:#ffe7e2;border-color:#c94a3a47}.quick-action.poop{color:var(--poop-dark);background:#fff6e5}.quick-action.pee{color:var(--pee-dark);background:#edf7ff}.split-card{padding:0;overflow:hidden}.split-card-header{flex:auto;grid-template-columns:auto 1fr;align-items:center;gap:6px 10px;width:100%;padding:13px 16px 8px;display:grid}.split-card-header small{grid-column:1/-1}.split-buttons{border-top:1px solid #17211f14;grid-template-columns:1fr 1fr;width:100%;display:grid}.split-buttons button{color:currentColor;background:#ffffff73;min-height:42px;font-size:15px;font-weight:780}.split-buttons button+button{border-left:1px solid #17211f14}.split-buttons button:disabled{cursor:not-allowed;opacity:.42}.split-buttons button:not(:disabled):active{background:#ffffffb8}.metric-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.metric{border:1px solid var(--line);background:#fffffff0;border-radius:8px;min-width:0;padding:12px}.metric strong{overflow-wrap:anywhere;color:var(--ink);margin-top:6px;font-size:18px;font-weight:780;line-height:1.15;display:block}.timeline-panel,.chart-panel,.event-list,.backup-panel{border:1px solid var(--line);box-shadow:var(--shadow);background:#fffffff0;border-radius:8px;padding:16px}.section-title{color:var(--mint-dark);flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:14px;display:flex}.section-title h2{color:var(--ink);margin-right:auto;font-size:16px;font-weight:760;line-height:1.2}.timeline-legend{color:var(--muted);flex-wrap:wrap;justify-content:flex-end;gap:8px;font-size:11px;line-height:1;display:flex}.timeline-legend span{align-items:center;gap:4px;display:inline-flex}.timeline-legend i{border-radius:999px;width:8px;height:8px}.timeline-legend .legend-sleep{background:var(--mint);border-radius:4px;width:15px}.timeline-legend .legend-feed{background:var(--coral)}.timeline-legend .legend-poop{background:var(--poop)}.timeline-legend .legend-pee{background:var(--pee)}.timeline{flex-direction:column;gap:8px;display:flex}.timeline-track{border:1px solid var(--line);background:repeating-linear-gradient(90deg, #61b7a61f 0, #61b7a61f 1px, transparent 1px, transparent 25%), var(--surface);border-radius:8px;height:42px;position:relative;overflow:hidden}.sleep-segment{background:#61b7a6c7;border-radius:6px;min-width:5px;position:absolute;top:8px;bottom:8px}.sleep-segment.active{background:var(--mint-dark)}.feed-segment{background:#f26f5eb3;border-radius:999px;min-width:5px;position:absolute;top:14px;bottom:14px}.feed-segment.active{background:var(--coral-dark)}.event-marker{border:2px solid 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var(--line);min-height:120px;color:var(--muted);text-align:center;border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:8px;padding:18px;display:flex}.empty-state strong{color:var(--ink);font-size:15px}.empty-state span{max-width:260px;font-size:13px;line-height:1.45}.bottom-tabs{z-index:20;width:min(100%,760px);padding:8px 14px calc(8px + env(safe-area-inset-bottom));border-top:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#ffffffe6;grid-template-columns:repeat(3,minmax(0,1fr));margin:0 auto;display:grid;position:fixed;bottom:0;left:0;right:0}.bottom-tabs button{min-height:52px;color:var(--muted);background:0 0;border-radius:8px;justify-content:center;align-items:center;gap:6px;font-size:13px;font-weight:720;display:inline-flex}.bottom-tabs button.active{background:var(--surface-strong);color:var(--mint-dark)}.visually-hidden{clip:rect(0 0 0 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