:root {
  color-scheme: light;
  --bg: #fafafa;
  --card: #ffffff;
  --text: #171717;
  --muted: #737373;
  --border: #e5e5e5;
  --accent: #171717;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Hiragino Sans',
    'Noto Sans JP', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

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

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

header {
  margin-bottom: 28px;
}

.brand {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

h1 {
  margin: 0 0 8px;
  font-size: 28px;
  line-height: 1.3;
}

.meta {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin: 20px 0 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 22px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 16px;
}

.card p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

footer {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
}

footer p {
  margin: 0 0 8px;
}

.link-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.link-list li {
  margin-bottom: 12px;
}

.link-list a {
  font-weight: 600;
  text-decoration: none;
}

.link-list a:hover {
  text-decoration: underline;
}