.seo-main { width: min(calc(100% - 2rem), var(--content)); margin: 0 auto; padding: 2rem 0 4.5rem; }
.seo-breadcrumb { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-bottom: 1.5rem; color: var(--muted); font-size: 0.88rem; }
.seo-record, .seo-index-head, .seo-index-group, .seo-related { border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); }
.seo-record { padding: clamp(1.25rem, 4vw, 2.6rem); }
.seo-record h1, .seo-index-head h1 { margin: 0; color: var(--text-strong); font: 700 clamp(2rem, 7vw, 4.4rem)/1.08 var(--serif); }
.seo-record h2, .seo-related h2, .seo-index-group h2 { margin: 0 0 0.8rem; color: var(--accent); font-family: var(--serif); }
.seo-record section { margin-top: 2rem; }
.seo-lead { max-width: 76ch; color: var(--text); font-size: 1.05rem; }
.seo-name-en { margin: 0.35rem 0 0; color: var(--muted); font: 500 0.9rem/1.5 var(--mono); }
.seo-tags { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 1rem; }
.seo-tag { padding: 0.2rem 0.5rem; border: 1px solid var(--line); background: var(--surface-2); color: var(--muted); font-size: 0.72rem; }
.seo-hero-image { margin: 0 0 2rem; border-bottom: 4px solid var(--accent); background: var(--surface-2); }
.seo-hero-image img { display: block; width: 100%; height: auto; max-height: 32rem; object-fit: contain; }
.seo-hero-image figcaption, .seo-layouts figcaption { padding: 0.45rem 0.75rem; color: var(--muted); font-size: 0.78rem; }
.seo-layouts { display: grid; gap: 1rem; margin-bottom: 2rem; }
.seo-layouts figure { margin: 0; overflow: hidden; border: 1px solid var(--line); background: var(--paper); }
.seo-layouts img { display: block; width: 100%; height: auto; }
.seo-facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(11.5rem, 1fr)); gap: 1px; margin: 1.75rem 0 0; border: 1px solid var(--line); background: var(--line); }
.seo-facts > div { min-width: 0; padding: 0.9rem; background: var(--surface-2); }
.seo-facts dt { color: var(--muted); font-size: 0.75rem; letter-spacing: 0.04em; }
.seo-facts dd { margin: 0.25rem 0 0; overflow-wrap: anywhere; color: var(--text-strong); font-weight: 600; }
.seo-sections { max-width: 84ch; }
.seo-sections ul { padding-left: 1.25rem; }
.seo-actions { margin-top: 2rem; }
.seo-button { display: inline-block; padding: 0.75rem 1rem; background: var(--accent); color: var(--accent-ink); font-weight: 700; text-decoration: none; }
.seo-button:hover, .seo-button:focus-visible { filter: brightness(1.08); }
.seo-related { margin-top: 1.5rem; padding: 1.5rem; }
.seo-related ul { display: flex; flex-wrap: wrap; gap: 0.55rem 1.5rem; margin: 0; padding-left: 1.2rem; }
.seo-index-head { margin-bottom: 1.5rem; padding: clamp(1.4rem, 4vw, 2.5rem); }
.seo-index-group { margin-top: 1.5rem; padding: 1.5rem; }
.seo-index-group h2 small { color: var(--muted); font: 500 0.75rem/1 var(--mono); }
.seo-index-group > p { color: var(--muted); }
.seo-index-group ul { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1px; margin: 0; padding: 1px; list-style: none; background: var(--line); }
.seo-index-group li { min-width: 0; background: var(--surface-2); }
.seo-index-group li a { display: grid; gap: 0.35rem; height: 100%; padding: 0.9rem; color: var(--text); text-decoration: none; }
.seo-index-group li a:hover, .seo-index-group li a:focus-visible { background: var(--accent-soft); }
.seo-index-group li span { color: var(--muted); font-size: 0.82rem; }
@media (max-width: 680px) {
  .seo-main { width: min(calc(100% - 1rem), var(--content)); padding-top: 1.2rem; }
  .seo-record { padding: 1rem; }
  .seo-index-group { padding: 1rem; }
}