:root {
  --fg: #1a1a1a;
  --muted: #5b6470;
  --accent: #1f6feb;
  --bg: #ffffff;
  --border: #e6e8eb;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  color: var(--fg);
  background: var(--bg);
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.site-header h1 {
  margin: 0 0 4px;
  font-size: 1.9rem;
}

.tagline { color: var(--muted); margin: 0; }

h1, h2 { line-height: 1.25; }
h2 { margin-top: 2rem; font-size: 1.25rem; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.meta { color: var(--muted); font-size: 0.9rem; }

.links {
  display: flex;
  gap: 20px;
  margin: 28px 0;
}

.back { display: inline-block; margin-bottom: 24px; font-size: 0.95rem; }

.site-footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

ul { padding-left: 1.25rem; }

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6e8eb;
    --muted: #9aa4b2;
    --accent: #5a9bff;
    --bg: #0e1116;
    --border: #232a33;
  }
}