:root{color-scheme:light dark;--bg: #fafaff;--surface: #ffffff;--band: #f0f2fd;--ink: #1c2150;--muted: #565d8f;--line: #e1e4f6;--accent: #4f6bed;--accent-strong: #3a4fd0;--on-accent: #ffffff;--amber: #f2a93b;--glow: rgba(79, 107, 237, .16);--radius: 14px}@media(prefers-color-scheme:dark){:root{--bg: #0e1124;--surface: #171b38;--band: #121530;--ink: #eceefe;--muted: #9aa1cf;--line: #272c57;--accent: #6a84f5;--accent-strong: #8197ff;--on-accent: #0e1124;--glow: rgba(106, 132, 245, .18)}}*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg)}a{color:var(--accent-strong)}h1,h2,h3{line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}h2{font-size:1.75rem}.wrap{max-width:64rem;margin:0 auto;padding:0 1.25rem}.site-header{border-bottom:1px solid 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