:root {
  --bg: #f7f7f9;
  --surface: #ffffff;
  --text: #1f2328;
  --muted: #6b7280;
  --border: #e3e5e8;
  --accent: #2563eb;
  --accent-weak: #dbeafe;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111318;
    --surface: #1a1d24;
    --text: #e6e8eb;
    --muted: #9aa1ab;
    --border: #2c313a;
    --accent: #60a5fa;
    --accent-weak: #1e3a5f;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.7;
}
a { color: var(--accent); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }
header.site { background: var(--surface); border-bottom: 1px solid var(--border); }
header.site .wrap { display: flex; align-items: center; gap: 16px; padding-top: 12px; padding-bottom: 12px; }
header.site .brand { font-weight: 800; font-size: 1.1rem; color: var(--text); text-decoration: none; margin-right: auto; }
header.site nav a { margin-left: 12px; font-size: 0.9rem; }
.hero { padding: 48px 0 24px; }
.hero h1 { font-size: 1.9rem; margin: 0 0 8px; line-height: 1.3; }
.hero p { margin: 0; color: var(--muted); }
h2 { font-size: 1.25rem; margin: 40px 0 12px; }
.sites { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.site-card {
  display: flex; flex-direction: column; gap: 8px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px;
}
.site-card h3 { margin: 0; font-size: 1.05rem; }
.site-card p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.site-card .tags { display: flex; gap: 6px; flex-wrap: wrap; }
.site-card .tag { font-size: 0.75rem; padding: 0 8px; border-radius: 999px; background: var(--accent-weak); }
.site-card .go { margin-top: auto; font-weight: 700; text-decoration: none; }
.site-card.coming { border-style: dashed; }
.prose { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 8px 24px 16px; }
.prose ul { padding-left: 1.2em; }
footer.site { margin-top: 56px; border-top: 1px solid var(--border); background: var(--surface); font-size: 0.85rem; color: var(--muted); }
footer.site .wrap { padding-top: 16px; padding-bottom: 24px; }
footer.site nav a { margin-right: 16px; }
.muted { color: var(--muted); }
@media (max-width: 480px) { .hero h1 { font-size: 1.55rem; } }