:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #666666;
  --link: #0066cc;
  --border: #e5e5e5;
  --card: #fafafa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --fg: #e8e8e8;
    --muted: #9aa0a6;
    --link: #5aa9ff;
    --border: #2a2d31;
    --card: #1c1f23;
  }
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 24px 80px;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.7;
}

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

header.site {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
header.site .name { font-weight: 600; font-size: 1.05rem; }
header.site nav { margin-left: auto; display: flex; gap: 18px; font-size: 0.95rem; }

h1 { font-size: 1.9rem; margin-bottom: 4px; }
h2 { font-size: 1.15rem; margin-top: 36px; }
.subtitle { color: var(--muted); margin-bottom: 40px; }

ul { padding-left: 22px; }
li { margin: 6px 0; }

.cards { display: grid; gap: 16px; margin-top: 32px; }
.card {
  display: block;
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 10px;
  padding: 18px 20px;
}
.card:hover { border-color: var(--link); text-decoration: none; }
.card .title { font-weight: 600; font-size: 1.05rem; color: var(--fg); }
.card .desc { color: var(--muted); font-size: 0.95rem; margin-top: 4px; }

footer.site {
  margin-top: 60px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.disclaimer {
  border-left: 3px solid var(--link);
  background: var(--card);
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  margin: 24px 0;
}