:root{color-scheme:light;--surface-1: #fcfcfb;--surface-2: #f4f4f2;--surface-3: #e9e9e6;--border: #dcdcd8;--text-primary: #0b0b0b;--text-secondary: #52514e;--text-muted: #7a7975;--series-1: #2a78d6;--series-2: #eb6834;--positive: #008300;--negative: #e34948;--warning: #b45309;--radius: 10px;--gap: 12px}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){color-scheme:dark;--surface-1: #1a1a19;--surface-2: #232322;--surface-3: #2e2e2c;--border: #3a3a37;--text-primary: #ffffff;--text-secondary: #c3c2b7;--text-muted: #94938b;--series-1: #3987e5;--series-2: #d95926;--positive: #4ac24a;--negative: #e66767;--warning: #eda100}}:root[data-theme=dark]{color-scheme:dark;--surface-1: #1a1a19;--surface-2: #232322;--surface-3: #2e2e2c;--border: #3a3a37;--text-primary: #ffffff;--text-secondary: #c3c2b7;--text-muted: #94938b;--series-1: #3987e5;--series-2: #d95926;--positive: #4ac24a;--negative: #e66767;--warning: #eda100}*{box-sizing:border-box}body{margin:0;background:var(--surface-1);color:var(--text-primary);font:15px/1.5 system-ui,-apple-system,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased}.app{max-width:720px;margin:0 auto;padding:16px 16px calc(76px + env(safe-area-inset-bottom))}.page-title{font-size:20px;font-weight:650;margin:4px 0 16px}.card{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:14px;margin-bottom:var(--gap)}.nav{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--surface-2);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}.nav a{flex:1;padding:14px 4px;text-align:center;font-size:13px;text-decoration:none;color:var(--text-secondary);border-top:2px solid transparent}.nav a.active{color:var(--text-primary);border-top-color:var(--series-1);font-weight:600}.muted{color:var(--text-muted)}.error{background:color-mix(in srgb,var(--negative) 12%,var(--surface-2));border:1px solid var(--negative);border-radius:var(--radius);padding:12px;margin-bottom:var(--gap)}