:root{--bg:#fafaf9;--surface:#fff;--ink:#18181b;--muted:#6b7280;--line:#e7e5e4;--accent:#4f46e5;--accent-hover:#4338ca;--accent-ink:#fff;--dark:#111113;--body-strong:#3f3f46;--nav-bg:hsla(60,9%,98%,.85);--contrast-bg:#18181b;--contrast-ink:#fff;--input-bg:#fafaf9;--radius:12px;--max:1080px}[data-theme=dark]{--bg:#0e0e11;--surface:#16161a;--ink:#ececee;--muted:#9a9aa3;--line:#26262c;--accent:#7b78ff;--accent-hover:#918fff;--accent-ink:#0e0e11;--dark:#0a0a0c;--body-strong:#c9c9d1;--nav-bg:rgba(14,14,17,.85);--contrast-bg:#ececee;--contrast-ink:#131316;--input-bg:#0e0e11}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica 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