.skip-link {
  position: fixed;
  z-index: 1200;
  top: var(--space-3);
  left: var(--space-3);
  padding: 10px 16px;
  color: var(--color-surface);
  background: var(--color-brand-900);
  transform: translateY(-180%);
  transition: transform 120ms ease;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 700;
  top: 0;
  height: var(--header-height);
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.98);
}

.header-inner {
  width: min(100% - 48px, var(--site-max));
  height: 100%;
  margin-inline: auto;
  display: flex;
  align-items: stretch;
  gap: var(--space-6);
}

.site-identity {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  color: var(--color-heading);
  text-decoration: none;
}

.site-logo { width: 112px; height: auto; flex: 0 0 auto; display: block; }

.desktop-navigation {
  min-width: 0;
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.primary-navigation,
.navigation-dropdown,
.mobile-navigation-list,
.mobile-submenu,
.breadcrumb ol,
.site-footer ul,
.site-directory ul,
.document-list,
.category-navigation ol,
.overflow-navigation-children,
.article-toc ol {
  padding: 0;
  margin: 0;
  list-style: none;
}

.primary-navigation { display: flex; align-items: stretch; }
.navigation-item { position: relative; display: flex; align-items: stretch; }
.navigation-row { display: flex; align-items: stretch; }

.navigation-link,
.submenu-toggle {
  min-height: 44px;
  border: 0;
  color: var(--color-ink-700);
  background: transparent;
}

.navigation-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.navigation-link::after {
  position: absolute;
  right: 10px;
  bottom: 0;
  left: 10px;
  height: 3px;
  background: var(--color-accent);
  content: "";
  opacity: 0;
  transform: scaleX(0.25);
  transition: opacity 120ms ease, transform 120ms ease;
}

.navigation-item[data-active="true"] .navigation-link::after { opacity: 1; transform: scaleX(1); }
.navigation-link:hover { color: var(--color-label-green); text-decoration: none; }

.submenu-toggle {
  width: 28px;
  padding: 0 6px 0 0;
  cursor: pointer;
}

.submenu-toggle svg,
.mobile-submenu-toggle svg { width: 14px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.submenu-toggle[aria-expanded="true"] svg,
.mobile-submenu-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }

.overflow-toggle {
  width: auto;
  gap: 6px;
  padding: 0 10px;
}

.overflow-toggle svg { margin-top: 2px; }

.navigation-dropdown {
  position: fixed;
  z-index: 720;
  top: var(--header-height);
  left: 0;
  width: 100%;
  max-height: calc(100vh - var(--header-height));
  overflow-y: auto;
  padding: var(--space-6) max(var(--space-6), calc((100vw - var(--content-max)) / 2));
  display: grid;
  grid-template-columns: repeat(var(--navigation-columns, 1), minmax(0, 1fr));
  gap: var(--space-2) var(--space-8);
  border-top: 2px solid var(--color-action-600);
  border-bottom: 1px solid var(--color-border);
  background: #f7f9fb;
  box-shadow: var(--shadow-menu);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  visibility: hidden;
  transition: opacity 170ms ease, transform 170ms ease, visibility 0s linear 170ms;
}

.navigation-dropdown[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  visibility: visible;
  transition-delay: 0s;
}

.navigation-dropdown a {
  min-height: 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 10px var(--space-3);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-ink-700);
  font-size: 14px;
  text-decoration: none;
}

.navigation-dropdown .inline-icon,
.category-link .inline-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 1.6;
}

.overflow-navigation-group { min-width: 0; }
.overflow-navigation-group-link { font-weight: 700; }
.overflow-navigation-group-link.dropdown-group-label { min-height: auto; color: var(--color-label-green); }
.overflow-navigation-children { padding-left: 0; }
.overflow-navigation-children a { min-height: 40px; padding-left: var(--space-6); color: var(--color-ink-700); font-size: 13px; font-weight: 400; }

.navigation-dropdown a[aria-current="page"],
.navigation-dropdown a:hover,
.navigation-dropdown a:focus,
.navigation-dropdown a:focus-visible { color: var(--color-surface); background: var(--color-label-green); }

.header-actions { flex: 0 0 auto; display: flex; align-items: center; gap: var(--space-2); }

.menu-button {
  width: 44px;
  height: 44px;
  display: none;
  place-items: center;
  padding: 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-brand-900);
  background: transparent;
  cursor: pointer;
}

.menu-button svg { width: 24px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: square; }
.menu-button:hover { border-color: var(--color-border); background: var(--color-surface-muted); }

.navigation-backdrop { position: fixed; z-index: 780; inset: 0; background: rgba(16, 32, 47, 0.55); }

.mobile-navigation {
  position: fixed;
  z-index: 800;
  inset: 0 0 0 auto;
  width: min(88vw, 390px);
  overflow-y: auto;
  color: var(--color-surface);
  background: var(--color-brand-900);
  box-shadow: -18px 0 40px rgba(10, 24, 37, 0.25);
}

.mobile-navigation-header {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.menu-button.inverse { display: grid; color: var(--color-surface); }
.mobile-navigation-list > li { border-bottom: 1px solid rgba(255, 255, 255, 0.16); }
.mobile-navigation-row { display: flex; align-items: center; }
.mobile-navigation-row > a { flex: 1; font-weight: 600; }
.mobile-navigation a { display: flex; min-height: 52px; align-items: center; padding: 12px var(--space-5); color: var(--color-surface); text-decoration: none; }
.mobile-navigation-row > a[aria-current="page"] { color: var(--color-label-green); }
.mobile-submenu { padding: 0 0 var(--space-3) var(--space-4); }
.mobile-submenu-toggle { width: 48px; height: 48px; border: 0; color: var(--color-surface); background: transparent; }
.mobile-submenu a { min-height: 46px; padding: 6px 12px; border-left: 2px solid rgba(255, 255, 255, 0.3); color: var(--color-label-green); font-size: 15px; }
.mobile-submenu a:hover,
.mobile-submenu a[aria-current="page"] { border-left-color: #8ed1f8; color: var(--color-surface); background: rgba(255, 255, 255, 0.08); }

.page-heading-shell { padding-block: var(--space-5) var(--space-10); border-bottom: 1px solid var(--color-border); background: var(--color-surface); }
.breadcrumb-home { margin-bottom: var(--space-5); color: var(--color-ink-500); font-size: 14px; }
.breadcrumb { margin-bottom: var(--space-5); font-size: 14px; }
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.breadcrumb li + li::before { margin-right: 6px; color: var(--color-border-strong); content: "/"; }
.page-heading-shell h1 { margin: 0; padding-left: var(--space-6); border-left: 4px solid var(--color-action-600); font-size: 34px; font-weight: 600; letter-spacing: 0.015em; line-height: 1.45; }
.page-intro { max-width: var(--reading-max); margin: var(--space-5) 0 0; color: var(--color-ink-700); }

.section-heading { margin-bottom: var(--space-5); padding-bottom: var(--space-3); border-bottom: 2px solid var(--color-brand-900); }
.section-heading h2 { margin: 0; font-size: 22px; }
.updates { margin-top: var(--space-12); }

.site-directory { display: grid; grid-template-columns: 220px 1fr; }
.directory-group { display: grid; grid-column: 1 / -1; grid-template-columns: subgrid; gap: var(--space-8); padding: var(--space-6) 0; border-bottom: 1px solid var(--color-border); }
.directory-group h3 { margin: 0 0 var(--space-3); font-size: 19px; }
.directory-group h3 a { display: inline-flex; align-items: baseline; gap: var(--space-2); color: var(--color-heading); text-decoration: none; }
.directory-group ul { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: baseline; gap: 4px var(--space-6); }
.directory-group li a { position: relative; display: block; padding: 6px 0 6px 14px; color: var(--color-heading); font-size: 15px; text-decoration: none; }
.directory-group li a::before { position: absolute; top: 1.08em; left: 0; width: 5px; height: 5px; background: var(--color-action-600); content: ""; }

.document-list { background: var(--color-surface); }
.document-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: var(--space-6); padding: var(--space-5) var(--space-4); border-bottom: 1px solid var(--color-border); }
.document-item > div { min-width: 0; }
.document-item:hover { background: #fbfdfe; }
.document-item h3 { margin: 0 0 5px; color: var(--color-heading); font-size: 16px; font-weight: 650; line-height: 1.5; }
.document-meta { display: flex; flex-wrap: wrap; gap: 4px 0; margin: 0; color: var(--color-ink-500); font-size: 13px; font-variant-numeric: tabular-nums; }
.document-meta span { display: inline-flex; align-items: center; white-space: nowrap; }
.document-meta span:not(:last-child)::after { height: 12px; margin: 0 9px; border-left: 1px solid var(--color-border-strong); content: ""; }
.document-action,
.text-button { flex: 0 0 auto; min-height: 42px; display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); padding: 8px 14px; border: 1px solid var(--color-action-700); border-radius: var(--radius-sm); color: var(--color-heading); background: var(--color-surface); font-size: 14px; font-weight: 700; line-height: 1.3; text-decoration: none; white-space: nowrap; cursor: pointer; }
.document-action:hover,
.text-button:hover { color: var(--color-surface); background: var(--color-action-700); text-decoration: none; }
.document-action .inline-icon { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-linecap: square; stroke-linejoin: miter; stroke-width: 1.6; }

.category-navigation { border-top: 2px solid var(--color-brand-900); }
.category-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--space-10); counter-reset: category-item; }
.category-list li { border-bottom: 1px solid var(--color-border); counter-increment: category-item; }
.category-link { min-height: 76px; display: grid; grid-template-columns: 34px 1fr 24px; align-items: center; gap: var(--space-3); padding: var(--space-3) var(--space-2); color: var(--color-heading); text-decoration: none; }
.category-link:hover { color: var(--color-heading); background: var(--color-action-100); text-decoration: none; }
.category-index { color: var(--color-label-green); font-size: 13px; font-variant-numeric: tabular-nums; font-weight: 700; }
.category-index::before { content: counter(category-item, decimal-leading-zero); }
.category-label { font-size: 17px; font-weight: 600; }
.category-description { display: block; margin-top: 2px; color: var(--color-ink-500); font-size: 14px; font-weight: 400; }

.key-value-list,
.contact-list { margin: 0; border-top: 2px solid var(--color-brand-900); }
.key-value-list > div { display: grid; grid-template-columns: minmax(150px, 28%) 1fr; border-bottom: 1px solid var(--color-border); }
.contact-list > div { display: grid; grid-template-columns: 220px 1fr; border-bottom: 1px solid var(--color-border); }
.key-value-list dt,
.contact-list dt { margin: 0; color: var(--color-heading); background: var(--color-surface-muted); font-weight: 650; white-space: nowrap; }
.key-value-list dd,
.contact-list dd { min-width: 0; margin: 0; background: var(--color-surface); overflow-wrap: anywhere; }
.key-value-list dt,
.key-value-list dd { padding: 15px 18px; }
.contact-list dt,
.contact-list dd { padding: 17px 20px; }

.article-layout { display: grid; grid-template-columns: 210px minmax(0, 1fr); align-items: start; gap: var(--space-12); }
.article-toc { position: sticky; top: calc(var(--header-height) + var(--space-6)); padding-top: var(--space-1); border-top: 0; background: transparent; }
.article-toc strong { display: block; margin-bottom: var(--space-3); color: var(--color-heading); font-size: 15px; font-weight: 700; }
.article-toc ol { border-top: 1px solid var(--color-border-strong); }
.article-toc li + li { margin-top: 0; }
.article-toc a { display: block; padding: 10px 8px; border-bottom: 1px solid var(--color-border); color: var(--color-heading); font-size: 14px; text-decoration: none; }
.article-toc a:hover { color: var(--color-heading); background: var(--color-action-100); }
.reading-content { min-width: 0; }
.reading-content h2 { margin: var(--space-12) 0 var(--space-5); font-size: 24px; font-weight: 650; line-height: 1.45; }
.reading-content section:first-child h2 { margin-top: 0; }
.reading-content p,
.reading-content ul { max-width: var(--reading-max); }
.reading-content section { scroll-margin-top: calc(var(--header-height) + var(--space-6)); }
.reading-content section + section { margin-top: var(--space-12); padding-top: var(--space-1); border-top: 1px solid var(--color-border); }
.reading-content p,
.reading-content li { color: var(--color-ink-700); }
.reading-content li + li { margin-top: var(--space-2); }

.table-region { max-width: 100%; overflow-x: auto; border: 1px solid var(--color-border); background: var(--color-surface); scrollbar-color: var(--color-border-strong) var(--color-surface-muted); }
.table-region:focus-visible { outline-offset: 4px; }
.data-table { width: 100%; min-width: 720px; border-collapse: collapse; background: var(--color-surface); font-size: 15px; }
.data-table th,
.data-table td { padding: 13px 15px; border-right: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); text-align: left; vertical-align: top; }
.data-table th:last-child,
.data-table td:last-child { border-right: 0; }
.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table thead th { color: var(--color-heading); background: var(--color-surface-muted); font-weight: 700; white-space: nowrap; }
.data-table tbody th { color: var(--color-heading); font-weight: 650; white-space: nowrap; }
.data-table tbody tr:hover { background: #fbfdfe; }
.briefing-table thead th { color: var(--color-surface); background: var(--color-brand-900); border-bottom: 3px solid var(--color-label-green); }
.briefing-table thead th:not(:last-child) { border-right-color: rgba(255, 255, 255, 0.24); }
.briefing-table tbody td:nth-child(2) { white-space: pre-line; }
.table-file-link { width: 36px; height: 36px; color: var(--color-action-700); display: inline-grid; place-items: center; border: 1px solid var(--color-action-700); border-radius: var(--radius-sm); background: var(--color-surface); text-decoration: none; }
.table-file-link:hover { color: var(--color-surface); background: var(--color-action-700); text-decoration: none; }
.table-file-link .inline-icon { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.7; }
.table-empty-row td { padding-block: var(--space-8); color: var(--color-ink-500); text-align: left; }
.numeric { text-align: right; font-variant-numeric: tabular-nums; }
.data-note { width: 100%; color: var(--color-ink-500); font-size: 14px; }

.year-group + .year-group { margin-top: var(--space-12); }
.year-heading { display: flex; align-items: baseline; gap: var(--space-4); margin-bottom: var(--space-4); padding-bottom: var(--space-3); border-bottom: 2px solid var(--color-brand-900); }
.year-heading h2 { margin: 0; }
.year-heading span { color: var(--color-ink-500); font-size: 14px; }

.empty-state { max-width: 760px; padding: var(--space-10) 0; border: 0; background: transparent; text-align: left; }
.empty-state-mark { width: 48px; height: 4px; display: block; margin: 0 0 var(--space-6); background: var(--color-action-600); }
.empty-state h2 { margin: 0 0 var(--space-3); font-size: 24px; }
.empty-state p { margin-bottom: var(--space-6); color: var(--color-ink-500); }

.site-footer { padding-block: var(--space-10) var(--space-6); border-top: 1px solid var(--color-border); background: var(--color-surface-muted); }
.footer-inner { width: min(100% - 48px, var(--content-max)); margin-inline: auto; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--space-10); }
.site-footer h2 { margin-bottom: var(--space-3); font-size: 15px; }
.site-footer p,
.site-footer li { color: var(--color-ink-700); font-size: 14px; }
.site-footer li + li { margin-top: var(--space-2); }
.footer-meta { margin: var(--space-8) 0 0; padding-top: var(--space-5); border-top: 1px solid var(--color-border); color: var(--color-ink-500); font-size: 13px; }

@media (max-width: 1179px) {
  .site-directory { grid-template-columns: 190px 1fr; }
}

@media (max-width: 959px) {
  .desktop-navigation { display: none; }
  .header-inner { justify-content: space-between; }
  .menu-button { display: grid; }
  .article-layout { grid-template-columns: 1fr; gap: var(--space-8); }
  .article-toc { position: static; }
}

@media (max-width: 767px) {
  :root { --header-height: 60px; }
  .header-inner { width: calc(100% - 28px); gap: var(--space-2); }
  .site-logo { width: 96px; height: auto; }
  .page-heading-shell { padding-block: var(--space-4) var(--space-8); }
  .page-heading-shell h1 { padding-left: var(--space-4); font-size: 27px; }
  .site-directory { display: block; }
  .directory-group { display: block; padding: var(--space-5) 0; }
  .directory-group ul { grid-template-columns: 1fr; margin-top: var(--space-3); }
  .document-item { grid-template-columns: 1fr; align-items: flex-start; gap: var(--space-4); padding-inline: 0; }
  .document-action { width: 100%; }
  .category-list { grid-template-columns: 1fr; }
  .category-link { min-height: 68px; }
  .data-table { font-size: 14px; }
  .key-value-list > div,
  .contact-list > div { grid-template-columns: 1fr; }
  .key-value-list dt,
  .contact-list dt { padding-bottom: 6px; white-space: normal; }
  .key-value-list dd,
  .contact-list dd { padding-top: 10px; }
  .footer-inner { width: calc(100% - 36px); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-meta { margin-top: var(--space-6); }
}

@media (max-width: 420px) {
  .header-inner { width: calc(100% - 20px); }
  .header-actions { gap: 0; }
  .site-logo { width: 88px; }
  .document-meta { display: grid; gap: 2px; }
  .document-meta span::after { display: none; }
}

@media print {
  .site-header,
  .site-footer,
  .skip-link,
  .article-toc { display: none !important; }

  body { color: #000; background: #fff; }
  .page-heading-shell,
  .document-list,
  .data-table { background: #fff; }
  .content-container { width: 100%; }
  .page-body { padding: 24px 0; }
}