:root{--bg:#faf8f4;--surface:#ffffff;--ink:#1c1a17;--muted:#6f6a62;--line:#e7e2d9;--accent:#b4540a;--accent-ink:#ffffff;--ok:#1a7f4e;--err:#c0392b;--radius:12px}*{box-sizing:border-box}body,html{margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);font-family:-apple-system,Segoe UI,Roboto,Helvetica Neue,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:880px;margin:0 auto;padding:24px 20px 80px}.narrow{max-width:560px}.topbar{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;border-bottom:1px solid var(--line);background:var(--surface)}.topbar .brand{font-weight:800;font-size:18px;color:var(--ink);letter-spacing:-.02em}.topbar .brand span{color:var(--accent)}h1{font-size:26px;letter-spacing:-.02em;margin:24px 0 8px}h2{font-size:19px;margin:28px 0 10px}h3{font-size:16px;margin:18px 0 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