* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: #fff;
  color: #222;
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.site-header { text-align: center; margin-bottom: 40px; }
.site-header h1 { margin: 0; font-size: 1.6rem; font-weight: 500; }
.site-header p { margin: 0 0 8px; color: #777; }

.section { margin-bottom: 48px; }
.section h2 { font-size: 1rem; font-weight: 500; margin: 0 0 16px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 32px 24px;
}

.card { display: block; }
.card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #eee;
}
.card .title { margin: 8px 0 0; font-weight: 500; }
.card .summary { margin: 0; font-size: 0.9rem; color: #666; }

.site-footer { color: #999; font-size: 0.8rem; margin-top: 48px; text-align: center; }