:root {
  --paper: #f4f0e8;
  --paper-deep: #e6dfd2;
  --ink: #102b3f;
  --ink-soft: #4f6570;
  --teal: #1b9b98;
  --amber: #d69a3f;
  --line: #c8c1b5;
  --white: #fffdfa;
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--teal); }
h1, h2, h3, p { margin-top: 0; }
.index-shell { min-height: 100vh; }
.index-masthead { display: flex; align-items: center; min-height: 74px; gap: 20px; padding: 0 clamp(18px, 5vw, 78px); background: var(--paper); border-bottom: 1px solid var(--line); }
.index-brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 850; white-space: nowrap; }
.index-symbol { width: 27px; height: 27px; display: block; border: 2px solid var(--ink); border-radius: 50%; position: relative; }
.index-symbol::before, .index-symbol::after { content: ""; position: absolute; border-radius: 50%; }
.index-symbol::before { width: 7px; height: 7px; left: 4px; top: 4px; background: var(--teal); }
.index-symbol::after { width: 6px; height: 6px; right: 4px; bottom: 5px; background: var(--amber); }
.index-label { padding-left: 18px; border-left: 1px solid var(--line); color: var(--ink-soft); font-size: 12px; }
.index-nav { display: flex; gap: 18px; margin-left: auto; }
.index-nav a { padding: 24px 0 19px; border-bottom: 3px solid transparent; color: var(--ink-soft); font-size: 13px; }
.index-nav a:hover, .index-nav a.is-active { color: var(--ink); border-color: var(--teal); }
.index-menu { display: none; margin-left: auto; padding: 8px 12px; border: 1px solid var(--ink); background: transparent; color: var(--ink); border-radius: 3px; }
.index-mobile { display: none; }
.index-hero { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(28px, 6vw, 90px); max-width: 1480px; margin: 0 auto; padding: clamp(48px, 8vw, 110px) clamp(18px, 5vw, 78px) 70px; }
.hero-copy { align-self: center; }
.hero-kicker, .page-intro > span, .section-lead > span, .article-rubric { color: var(--teal); font-size: 11px; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.hero-kicker::before, .section-lead > span::before { content: ""; display: inline-block; width: 22px; height: 2px; margin: 0 9px 3px 0; background: var(--amber); }
.hero-copy h1 { max-width: 720px; margin: 20px 0 20px; font-size: clamp(40px, 5vw, 74px); line-height: 1.03; letter-spacing: -.02em; }
.hero-copy > p { max-width: 620px; color: var(--ink-soft); font-size: 18px; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 29px 0; }
.hero-actions a { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; padding: 0 17px; border: 1px solid var(--ink); border-radius: 3px; font-size: 13px; font-weight: 800; }
.hero-actions a:first-child { background: var(--ink); color: var(--white); }
.hero-actions a:last-child { border-color: var(--teal); color: var(--ink); }
.hero-stats { display: flex; gap: 28px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 12px; }
.hero-stats span { display: grid; gap: 2px; }
.hero-stats b { color: var(--ink); font-size: 20px; line-height: 1; }
.index-visual { margin: 0; }
.index-visual img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border: 1px solid var(--line); box-shadow: 16px 16px 0 var(--paper-deep); }
.index-visual figcaption { margin-top: 15px; color: var(--ink-soft); font-size: 12px; }
.directory-main { max-width: 1480px; margin: 0 auto; padding: 0 clamp(18px, 5vw, 78px) 90px; }
.topic-ledger, .reference-rail { padding: 58px 0; border-top: 1px solid var(--line); }
.section-lead { max-width: 700px; margin-bottom: 28px; }
.section-lead h2 { margin: 10px 0 9px; font-size: clamp(27px, 3vw, 43px); line-height: 1.12; }
.section-lead p { color: var(--ink-soft); }
.topic-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.topic-columns a { display: grid; grid-template-columns: 45px 1fr; gap: 6px 16px; padding: 26px; border-top: 5px solid var(--ink); background: var(--white); }
.topic-columns a:last-child { border-color: var(--teal); }
.topic-columns a:hover { background: #fff; }
.topic-number { grid-row: span 3; font-size: 27px; font-weight: 850; color: var(--amber); }
.topic-columns strong { font-size: 22px; }
.topic-columns p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.topic-columns em { color: var(--teal); font-size: 12px; font-style: normal; font-weight: 800; }
.directory-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 13px; }
.directory-card { min-height: 230px; display: flex; flex-direction: column; padding: 20px; border: 1px solid var(--line); background: var(--white); }
.directory-card:hover { border-color: var(--teal); }
.directory-meta { display: flex; justify-content: space-between; gap: 12px; color: var(--teal); font-size: 11px; }
.directory-meta time { color: var(--ink-soft); }
.directory-card h3 { margin: 17px 0 11px; font-size: 18px; line-height: 1.3; }
.directory-card p { margin-top: auto; margin-bottom: 0; color: var(--ink-soft); font-size: 13px; }
.section-link { display: inline-block; margin-top: 24px; border-bottom: 2px solid var(--amber); font-weight: 800; }
.topic-page, .simple-page, .article-sheet { max-width: 1100px; margin: 0 auto; padding: clamp(48px, 8vw, 100px) clamp(18px, 5vw, 70px) 96px; }
.page-intro { max-width: 780px; margin-bottom: 44px; }
.page-intro h1, .article-sheet h1 { margin: 17px 0 18px; font-size: clamp(36px, 5vw, 62px); line-height: 1.08; }
.page-intro p { color: var(--ink-soft); font-size: 17px; }
.topic-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 48px; }
.topic-notes section, .notice-box { padding: 24px; border-left: 4px solid var(--teal); background: var(--white); }
.topic-notes section:last-child { border-color: var(--amber); }
.topic-notes h2 { margin-bottom: 8px; font-size: 21px; }
.topic-notes p, .notice-box p { margin-bottom: 0; color: var(--ink-soft); }
.article-rubric { margin-bottom: 16px; }
.article-summary { max-width: 780px; color: var(--ink-soft); font-size: 19px; }
.article-copy { max-width: 820px; margin-top: 42px; font-size: 17px; }
.article-copy h2 { margin: 45px 0 12px; font-size: 27px; }
.article-copy table { width: 100%; margin: 28px 0; border-collapse: collapse; background: var(--white); font-size: 14px; }
.article-copy th, .article-copy td { padding: 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.article-copy th { background: var(--paper-deep); }
.related-strip { margin-top: 60px; padding-top: 25px; border-top: 1px solid var(--line); }
.related-strip h2 { font-size: 24px; }
.contact-address { font-size: 18px; font-weight: 800; }
.not-found { max-width: 760px; min-height: 54vh; margin: 0 auto; padding: 100px 20px; }
.not-found h1 { font-size: clamp(38px, 5vw, 64px); }
.not-found a { display: inline-block; margin-right: 18px; border-bottom: 2px solid var(--amber); font-weight: 800; }
.index-footer { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 34px; padding: 44px clamp(18px, 5vw, 78px); background: var(--ink); color: var(--white); font-size: 13px; }
.index-footer p { max-width: 380px; margin: 9px 0 0; color: #c7d4d5; }
.index-footer div { display: grid; align-content: start; gap: 8px; }
.index-footer span { color: var(--amber); font-size: 11px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.index-footer a { color: #e4eceb; }
@media (max-width: 920px) {
  .index-label, .index-nav { display: none; }
  .index-menu { display: block; }
  .index-mobile { padding: 12px 18px; background: var(--ink); color: var(--white); }
  .index-mobile.is-open { display: grid; gap: 7px; }
  .index-hero { grid-template-columns: 1fr; }
  .index-visual { order: -1; }
  .directory-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 580px) {
  .index-masthead { min-height: 62px; padding: 0 16px; }
  .index-brand { font-size: 14px; }
  .index-hero, .directory-main, .topic-page, .simple-page, .article-sheet { padding-left: 16px; padding-right: 16px; }
  .hero-copy h1 { font-size: 42px; overflow-wrap: anywhere; }
  .hero-copy > p { font-size: 16px; }
  .hero-actions a { width: 100%; }
  .hero-stats { gap: 17px; }
  .topic-columns, .topic-notes, .directory-grid { grid-template-columns: 1fr; }
  .index-visual img { aspect-ratio: 4 / 3; box-shadow: 8px 8px 0 var(--paper-deep); }
  .index-footer { grid-template-columns: 1fr; padding: 34px 16px; }
  .article-copy { font-size: 16px; }
  .article-copy table { display: block; overflow-x: auto; }
}