:root {
  --ground: #ffffff;
  --ink: #0a0a0a;
  --muted: #6b6b6b;
  --line: #ededed;
  --accent: #ff4f00;
  --accent-text: #c2410c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0b0b0b;
    --ink: #f4f4f4;
    --muted: #9c9c9c;
    --line: #262626;
    --accent-text: #ff7a3d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: "Geist", -apple-system, system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
main { max-width: 680px; margin: 0 auto; padding: 56px 24px 96px; }
header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 56px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 19px; color: var(--ink); text-decoration: none; }
.dot { width: 12px; height: 12px; border-radius: 6px; background: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover { color: var(--ink); }
h1 { font-size: 44px; line-height: 1.08; letter-spacing: -0.03em; margin: 0 0 14px; font-weight: 600; }
h2 { font-size: 22px; letter-spacing: -0.01em; margin: 44px 0 10px; font-weight: 600; }
h3 { font-size: 17px; margin: 26px 0 6px; font-weight: 600; }
p, li { color: var(--ink); }
.lead { color: var(--muted); font-size: 19px; margin: 0 0 32px; }
.muted { color: var(--muted); font-size: 15px; }
a { color: var(--accent-text); }
ul { padding-left: 20px; }
hr { border: none; border-top: 1px solid var(--line); margin: 64px 0; }
.language { font-size: 14px; color: var(--muted); }
footer { margin-top: 72px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }