:root {
  --background: #121212;
  --surface: #1c1c1c;
  --text: #ffbb44;
  --text-muted: #ff9900;
  --accent: #ffaa00;
  --border: #2a2a2a;
  --max-width: 720px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Noto Sans JP", sans-serif;
  line-height: 1.85;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  padding: 32px 24px 16px;
  text-align: center;
}

.logo {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: 0.5px;
  line-height: 1.05;
  margin: 0;
  background: linear-gradient(135deg, #fff3d6, #ffd59a, #ffb4a2);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 0 24px 24px;
  border-bottom: 1px solid var(--border);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}

.card + .card {
  margin-top: 20px;
}

h1 {
  font-size: 1.6rem;
  margin: 0 0 8px;
}

h2 {
  font-size: 1.1rem;
  margin: 28px 0 12px;
  color: var(--text-muted);
}

p,
li {
  color: #ffdca8;
}

.meta {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 24px;
}

ul {
  padding-left: 1.2rem;
}

.site-footer {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 0.88rem;
  border-top: 1px solid var(--border);
}

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

.home-links a {
  display: block;
  padding: 20px 24px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 170, 0, 0.06);
  color: var(--text);
  font-size: 1.05rem;
}

.home-links a:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.home-links span {
  display: block;
  margin-top: 6px;
  font-size: 0.9rem;
  color: var(--text-muted);
}