.knowledge-hero { padding-top: 60px; }
.knowledge-hero .hero-layout { gap: 48px; padding-bottom: 58px; }
.knowledge-hero h1 { white-space: pre-line; font-size: clamp(2rem, 3.5vw, 3.15rem); line-height: 1.45; letter-spacing: -.04em; margin: 20px 0; }
.knowledge-hero .region-copy { max-width: 40rem; }
.knowledge-summary { border: 1px solid var(--light-line); padding: 32px; }
.knowledge-summary h2 { font-size: 1.2rem; font-weight: 500; }
.knowledge-summary ul { margin: 20px 0 0; padding-left: 1.1rem; color: #d0d5ca; }
.knowledge-summary li + li { margin-top: 12px; }
.knowledge-meta { font-size: .8rem; color: var(--muted); margin: 16px 0; }
.knowledge-toc { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 32px; }
.knowledge-toc a { padding: 8px 14px; border: 1px solid var(--line); font-size: .875rem; background: var(--white); }
.knowledge-toc a:hover { border-color: var(--bronze); }
.method-table-scroll { overflow-x: auto; margin-top: 24px; }
.method-table { border-collapse: collapse; width: 100%; min-width: 620px; text-align: left; }
.method-table caption { text-align: left; color: var(--muted); font-size: .85rem; margin-bottom: 12px; }
.method-table th, .method-table td { padding: 18px 20px; border-bottom: 1px solid var(--line); vertical-align: top; }
.method-table thead { background: #eae7df; }
.method-table tbody th { width: 22%; font-weight: 600; }
.method-table td:nth-child(2) { width: 30%; }
.knowledge-list { margin: 24px 0 0; padding-left: 1.35rem; }
.knowledge-list li { padding-left: .5rem; margin: 14px 0; }
.case-record + .case-record { margin-top: 38px; padding-top: 38px; border-top: 1px solid var(--line); }
.case-record h3 { font-size: 1.5rem; line-height: 1.6; margin-bottom: 20px; }
.case-photo-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.case-photo-pair img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: contain; background: #e7e8df; }
.case-photo-pair figcaption { padding: 10px 0; color: var(--muted); font-size: .8rem; }
.case-facts { margin: 14px 0 20px; }
.case-facts div { display: grid; grid-template-columns: 100px 1fr; gap: 18px; border-bottom: 1px solid var(--line); padding: 14px 0; }
.case-facts dt { font-weight: 600; }
.case-facts dd { margin: 0; }
.knowledge-home { padding: 52px 0 64px; border-top: 1px solid var(--line); }
.knowledge-home h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 14px; line-height: 1.5; }
.knowledge-home .guide-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 26px; }
.knowledge-home .guide-card { padding: 24px; border: 1px solid var(--line); background: var(--white); }
.knowledge-home .guide-card h3 { margin-bottom: 12px; font-size: 1.15rem; }
.knowledge-home .source-link { color: var(--bronze); }
.knowledge-home-links { display: flex; flex-wrap: wrap; gap: 12px 30px; margin-top: 26px; }
@media (max-width: 900px) {
  .knowledge-hero .hero-layout { grid-template-columns: 1fr; gap: 24px; }
  .knowledge-summary { padding: 24px; }
  .knowledge-summary ul { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-bottom: 0; }
  .knowledge-summary li + li { margin-top: 0; }
}
@media (max-width: 600px) {
  .main-nav { gap: 6px; }
  .knowledge-hero { padding-top: 32px; }
  .knowledge-hero .hero-layout { padding-bottom: 36px; }
  .knowledge-hero h1 { font-size: 1.85rem; }
  .knowledge-toc { display: grid; grid-template-columns: 1fr; }
  .method-table th, .method-table td { padding: 14px; }
  .case-photo-pair { gap: 8px; }
  .case-facts div { grid-template-columns: 1fr; gap: 5px; }
  .knowledge-home { padding-block: 36px; }
  .knowledge-home .guide-grid { grid-template-columns: 1fr; }
}