:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f3f9fd;
  --text: #102a43;
  --muted: #4f6475;
  --primary: #0068b7;
  --primary-dark: #004b8d;
  --accent: #00a6d6;
  --border: #d8e8f2;
  --shadow: 0 12px 30px rgba(0, 75, 141, 0.10);
  --max-width: 1120px;
  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.7;
  background: var(--bg);
}

a {
  color: var(--primary-dark);
}

a:hover,
a:focus-visible {
  color: var(--primary);
}

.container {
  width: min(100% - 40px, var(--max-width));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: 12px;
  left: 16px;
  z-index: 10;
  padding: 8px 12px;
  color: #ffffff;
  text-decoration: none;
  background: var(--primary-dark);
  border-radius: 999px;
  transform: translateY(-150%);
}

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

.site-header {
  background: #ffffff;
  border-top: 8px solid var(--primary);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  padding: 18px 0;
}

.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: var(--primary-dark);
  font-weight: 900;
  text-decoration: none;
}

.brand-mark {
  width: 48px;
  height: auto;
}

.brand-text {
  font-size: clamp(1rem, 2vw, 1.35rem);
  letter-spacing: -0.02em;
}

.breadcrumb {
  padding: 14px 0 10px;
  font-size: 0.92rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.breadcrumb li:not(:last-child)::after {
  margin-left: 6px;
  color: var(--muted);
  content: ">";
}

.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumb [aria-current="page"] {
  color: var(--primary-dark);
  font-weight: 700;
}

.page-hero {
  background: #f7fbfe;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.page-hero-inner {
  padding: 30px 0 34px;
}

.page-hero h1 {
  margin: 0;
  color: var(--primary-dark);
  font-size: clamp(1.85rem, 4vw, 3rem);
  line-height: 1.25;
}

.lead {
  max-width: var(--max-width);
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  padding-top: 24px;
  padding-bottom: 46px;
}

.main-content {
  min-width: 0;
}

.content-card {
  padding: 24px;
  margin-bottom: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.content-card h2 {
  margin: 0 0 12px;
  color: var(--primary-dark);
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
}

.content-card p {
  margin: 0 0 10px;
}

.year-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px;
  margin-top: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.year-nav a,
.year-nav span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 120px;
  padding: 9px 14px;
  color: var(--primary-dark);
  font-weight: 700;
  text-decoration: none;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 999px;
}

.year-nav a:hover,
.year-nav a:focus-visible {
  background: #f8fcff;
  border-color: var(--accent);
}

.year-nav .current {
  color: #ffffff;
  background: var(--primary);
  border-color: var(--primary);
}

.publication-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.publication-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  color: var(--text);
  text-decoration: none;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 8px 22px rgba(0, 75, 141, 0.05);
}

.publication-item:hover,
.publication-item:focus-visible {
  background: #f8fcff;
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(0, 166, 214, 0.18), 0 8px 22px rgba(0, 75, 141, 0.08);
}

.publication-number {
  display: inline-flex;
  justify-content: center;
  padding: 3px 10px;
  color: var(--primary-dark);
  font-weight: 900;
  background: var(--surface-soft);
  border-radius: 999px;
}

.publication-area {
  font-weight: 700;
}

.notice-note {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.95rem;
}

.notice-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 14px;
}

.notice-summary-single {
  grid-template-columns: 1fr;
}

.notice-summary-card {
  padding: 14px 16px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
}

.notice-summary-card strong {
  display: inline-flex;
  align-items: center;
  margin-bottom: 4px;
  padding: 2px 10px;
  color: var(--primary-dark);
  background: var(--surface-soft);
  border-radius: 999px;
}

.notice-summary-card p + p {
  margin-top: 4px;
}

.related-categories {
  padding-bottom: 42px;
}

.related-categories h2 {
  margin: 0 0 14px;
  color: var(--primary-dark);
  font-size: 1.25rem;
}

.related-category-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.related-category-list a {
  display: block;
  padding: 14px 16px;
  color: var(--primary-dark);
  font-weight: 700;
  text-decoration: none;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.related-category-list a:hover,
.related-category-list a:focus-visible {
  background: #ffffff;
  border-color: var(--accent);
}

.site-footer {
  background: #ffffff;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: var(--primary-dark);
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 760px) {
.container {
    width: min(100% - 28px, var(--max-width));
  }

  .header-inner {
    padding: 14px 0;
  }

  .brand-mark {
    width: 42px;
  }

  .content-card {
    padding: 18px;
  }

  .publication-item {
    display: revert;
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .publication-number {
    justify-self: start;
  }

  .notice-summary,
  .related-category-list {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
.page-hero-inner { padding: 22px 0 24px; }
  .content-layout { padding-top: 18px; padding-bottom: 32px; }
  .year-nav a, .year-nav span { min-width: auto; }
  body { font-size: 1.05rem; }
  .brand-text { font-size: clamp(1.02rem, 4.4vw, 1.2rem); }
  .breadcrumb { font-size: 1rem; }
  .page-hero h1 { font-size: clamp(1.75rem, 7vw, 2.25rem); }
  .lead { font-size: 1.05rem; }
  .content-card h2 { font-size: 1.4rem; }
  .content-card p,
  .year-nav a,
  .year-nav span,
  .publication-area,
  .notice-summary-card,
  .related-category-list a { font-size: 1.05rem; }
  .publication-number,
  .notice-note { font-size: 1rem; }
  .related-categories h2 { font-size: 1.35rem; }
  .footer-inner { font-size: 1rem; }
}

@media (min-width: 901px) {
  .site-header { border-top-width: 6px; }
  .header-inner { padding: 10px 0; }
  .brand-mark { width: 42px; }
  .breadcrumb { padding: 8px 0 6px; font-size: 0.86rem; }
  .page-hero-inner { padding: 18px 0 20px; }
  .page-hero h1 { font-size: clamp(1.55rem, 3vw, 2.35rem); }
  .lead { margin-top: 8px; font-size: 0.96rem; line-height: 1.55; }
  .content-layout { gap: 14px; padding-top: 16px; padding-bottom: 26px; }
  .content-card { padding: 16px; margin-bottom: 12px; border-radius: 14px; }
  .content-card h2 { margin-bottom: 8px; font-size: clamp(1.12rem, 2vw, 1.38rem); }
  .content-card p { margin-bottom: 6px; line-height: 1.55; }
  .year-nav { gap: 8px; padding: 8px; margin-top: 10px; border-radius: 12px; }
  .year-nav a, .year-nav span { min-width: 104px; padding: 6px 12px; }
  .publication-list { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 12px; }
  .publication-item { grid-template-columns: 48px minmax(0, 1fr); gap: 8px; align-items: center; padding: 9px 10px; border-radius: 11px; box-shadow: none; }
  .publication-number { padding: 2px 8px; font-size: 0.88rem; }
  .publication-area { font-size: 0.93rem; line-height: 1.45; }
  .notice-note { margin-top: 10px; font-size: 0.86rem; }
  .notice-summary { gap: 10px; margin-top: 10px; }
  .notice-summary-card { padding: 11px 12px; border-radius: 12px; }
  .notice-summary-card strong { margin-bottom: 3px; padding: 1px 9px; }
  .related-categories { padding-bottom: 24px; }
  .related-categories h2 { margin-bottom: 10px; font-size: 1.12rem; }
  .related-category-list a { padding: 11px 14px; border-radius: 12px; }
  .footer-inner { padding: 16px 0; }
}

@media (min-width: 761px) and (max-width: 1050px) {
  .publication-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.brand:focus-visible,
.breadcrumb a:focus-visible,
.year-nav a:focus-visible,
.publication-item:focus-visible,
.related-category-list a:focus-visible,
.footer-inner a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}