:root{--bg: #faf8f5;--surface: #fff;--text: #1a1714;--muted: #5c5650;--accent: #6b4f2a;--border: #e8e2d9;--shadow: rgba(26, 23, 20, .06)}[data-theme=dark]{--bg: #141210;--surface: #1c1916;--text: #e8e4dd;--muted: #9a948c;--accent: #c4a574;--border: #2e2a26;--shadow: rgba(0, 0, 0, .35)}[data-theme=sepia]{--bg: #f5ecdd;--surface: #fff9ef;--text: #3a2d1e;--muted: #7e6652;--accent: #9a5f32;--border: #e0cfb7;--shadow: rgba(58, 45, 30, .12)}[data-theme=midnight]{--bg: #0a1020;--surface: #121a2d;--text: #e4eaff;--muted: #9aa7c9;--accent: #64b5ff;--border: #26324d;--shadow: rgba(0, 0, 0, .45)}*,*:before,*:after{box-sizing:border-box}html{font-size:18px;-webkit-font-smoothing:antialiased}body{margin:0;min-height:100vh;font-family:"Source Sans 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