:root {
  --bg: #0b0b0c;
  --card: #ffffff;
  --text: #1c1c1e;
  --muted: #6b6b70;
  --accent: #f5c518;
  --accent-dark: #caa010;
  --border: #e6e6e8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

header.site-header {
  background: #000;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header.site-header .logo {
  color: #fff;
  font-weight: 700;
  font-size: 20px;
  text-decoration: none;
  letter-spacing: 0.5px;
}

header.site-header nav a {
  color: #ddd;
  text-decoration: none;
  margin-left: 20px;
  font-size: 14px;
}

header.site-header nav a:hover { color: var(--accent); }

main {
  max-width: 760px;
  margin: 0 auto;
  background: var(--card);
  padding: 48px 40px 80px;
  min-height: 70vh;
}

@media (max-width: 640px) {
  main { padding: 32px 20px 60px; }
}

h1 {
  font-size: 28px;
  margin-bottom: 4px;
}

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

h2 {
  font-size: 19px;
  margin-top: 36px;
  margin-bottom: 10px;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 6px;
}

h3 {
  font-size: 16px;
  margin-top: 20px;
  margin-bottom: 6px;
}

p, li { color: #333; font-size: 15px; }

ul, ol { padding-left: 22px; }

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

.placeholder {
  background: #fff8e1;
  border: 1px dashed var(--accent-dark);
  padding: 1px 6px;
  border-radius: 4px;
  font-style: normal;
  color: #7a5c00;
}

.notice {
  background: #f4f4f5;
  border-left: 4px solid var(--accent);
  padding: 12px 16px;
  margin: 24px 0;
  font-size: 14px;
  color: #444;
}

footer {
  text-align: center;
  color: #888;
  font-size: 13px;
  padding: 24px;
}

.home-links {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.home-links a.card-link {
  display: block;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}

.home-links a.card-link:hover {
  border-color: var(--accent);
}

.home-links a.card-link span {
  display: block;
  font-weight: 400;
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}