:root {
  --bg: #ffffff; --fg: #17181c; --dim: #5d6270; --line: #e2e4ea; --accent: #2457d6; --on-accent: #ffffff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e0f12; --fg: #e8e9ed; --dim: #9aa0ae; --line: #2a2d35; --accent: #6ea8fe; --on-accent: #0e0f12; }
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
.top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 24px; padding: 16px clamp(16px, 5vw, 48px); border-bottom: 1px solid var(--line); }
.brand { color: var(--fg); font-weight: 650; font-size: 18px; text-decoration: none; }
nav { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
nav a { color: var(--dim); text-decoration: none; }
nav a:hover { color: var(--fg); }
nav a.cta { background: var(--accent); color: var(--on-accent); padding: 6px 14px; border-radius: 6px; }
main { flex: 1; width: 100%; max-width: 860px; margin: 0 auto; padding: 0 16px 48px; }
.hero { padding: clamp(40px, 10vw, 96px) 0 24px; }
.hero h1 { margin: 0; font-size: clamp(32px, 7vw, 52px); line-height: 1.1; }
.lede { color: var(--dim); font-size: 20px; margin: 12px 0 0; }
.content { margin-top: 24px; overflow-wrap: anywhere; }
.content pre { overflow-x: auto; padding: 12px; border: 1px solid var(--line); border-radius: 6px; }
footer { padding: 16px; text-align: center; color: var(--dim); font-size: 13px; border-top: 1px solid var(--line); }