:root {
  --bg: #f6f5f1; --fg: #15161b; --muted: #5c5e68; --line: #dddbd3; --accent: #3557c9; --card: #ffffff;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b0c10; --fg: #f3f1ec; --muted: #a3a5b0; --line: #262832; --accent: #8fb0ff; --card: #13151b; color-scheme: dark; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.65 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.wrap { max-width: 720px; margin: 0 auto; padding-block: 40px 64px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--fg); text-decoration: none; }
.brand svg { width: 32px; height: 32px; }
nav { display: flex; gap: 16px; font-size: 14px; }
a { color: var(--accent); }
h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; text-wrap: balance; }
h2 { font-size: 20px; margin: 36px 0 8px; text-wrap: balance; }
p, li { max-width: 65ch; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
.note { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; margin: 24px 0; }
footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }