:root {
  --bg: #f7f7f5;
  --text: #111111;
  --muted: #6b6b6b;
  --line: #e4e4e0;
  --accent: #ff5a1f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111111;
    --text: #f2f2f0;
    --muted: #9a9a96;
    --line: #2a2a28;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  padding-inline: 20px;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding-block: 48px 64px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 40px;
}

.brand {
  font-weight: 700;
  font-size: 20px;
  color: var(--text);
  text-decoration: none;
}

.lang { font-size: 14px; }

h1 {
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

h2 {
  font-size: 19px;
  margin: 36px 0 8px;
}

h3 {
  font-size: 16px;
  margin: 24px 0 4px;
}

p, li { color: var(--text); }
ul { padding-left: 20px; }

.meta { color: var(--muted); font-size: 14px; margin: 0 0 32px; }

a { color: var(--accent); }

.links {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  border-top: 1px solid var(--line);
}

.links li { border-bottom: 1px solid var(--line); }

.links a {
  display: block;
  padding: 16px 0;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.links a::after { content: "→"; float: right; color: var(--muted); }

footer {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}

footer a { color: var(--muted); margin-right: 16px; }