:root {
  --bg: #f7f3ea;
  --bg-accent: #efe2d1;
  --paper: rgba(255, 252, 247, 0.92);
  --paper-strong: #fffdf9;
  --ink: #1d2a3a;
  --ink-soft: #546171;
  --line: rgba(29, 42, 58, 0.12);
  --line-strong: rgba(29, 42, 58, 0.2);
  --brand: #ba4a2f;
  --brand-deep: #8d3623;
  --brand-soft: rgba(186, 74, 47, 0.12);
  --accent: #0b6b69;
  --accent-soft: rgba(11, 107, 105, 0.12);
  --shadow: 0 18px 40px rgba(29, 42, 58, 0.08);
  --radius: 22px;
  --radius-sm: 14px;
  --content-width: 1100px;
  --font-sans: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP",
    sans-serif;
  --font-serif: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.7;
  background:
    radial-gradient(circle at top left, rgba(186, 74, 47, 0.14), transparent 22%),
    radial-gradient(circle at top right, rgba(11, 107, 105, 0.1), transparent 24%),
    linear-gradient(180deg, #fbf7f0 0%, var(--bg) 50%, #f2ede3 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(29, 42, 58, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 42, 58, 0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.35;
}

a {
  color: var(--brand-deep);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

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

img {
  max-width: 100%;
  display: block;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--ink);
  color: #fff;
  border-radius: 999px;
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(251, 247, 240, 0.86);
  border-bottom: 1px solid var(--line);
}

.header-inner,
.page-shell,
.footer-inner {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--brand) 0%, #d48744 100%);
  color: #fffaf4;
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: var(--shadow);
}

.brand-copy strong {
  display: block;
  font-size: 1rem;
  font-family: var(--font-serif);
  letter-spacing: 0.04em;
}

.brand-copy span {
  display: block;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--ink);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid transparent;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a.is-current {
  background: var(--paper-strong);
  border-color: var(--line-strong);
  color: var(--brand-deep);
}

.page-shell {
  padding: 28px 0 72px;
  position: relative;
  z-index: 1;
}

.hero,
.section-card,
.note-card,
.table-panel,
.faq-item,
.source-list,
.legal-card {
  background: var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero {
  padding: 34px;
  margin-bottom: 24px;
  overflow: hidden;
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -120px -120px auto;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(11, 107, 105, 0.16), transparent 70%);
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(250px, 1fr);
  gap: 28px;
  align-items: end;
}

.eyebrow,
.meta-inline,
.status-pill,
.year-nav span,
.year-nav a {
  font-size: 0.84rem;
  letter-spacing: 0.04em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-deep);
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0 0 14px;
  line-height: 1.2;
  font-family: var(--font-serif);
  letter-spacing: 0.02em;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.3rem);
}

h2 {
  font-size: clamp(1.45rem, 2vw, 2rem);
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 14px;
}

.lead {
  font-size: 1.04rem;
  color: var(--ink-soft);
  max-width: 68ch;
}

.hero-summary {
  display: grid;
  gap: 12px;
}

.summary-card {
  padding: 18px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.summary-card strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
}

.meta-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
  color: var(--ink-soft);
}

.meta-inline span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  background: rgba(255, 255, 255, 0.72);
  border-radius: 999px;
}

.year-nav,
.chip-row,
.link-grid,
.stat-grid,
.faq-grid,
.card-grid {
  display: grid;
  gap: 12px;
}

.year-nav {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 20px;
}

.year-nav a,
.year-nav span {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px;
  border-radius: 16px;
  text-decoration: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.year-nav strong {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
}

.year-nav small {
  display: block;
  margin-top: 4px;
  font-size: 0.8rem;
  line-height: 1.25;
  color: var(--ink-soft);
}

.year-nav a {
  color: var(--brand-deep);
  font-weight: 700;
}

.year-nav .is-current {
  background: linear-gradient(135deg, rgba(186, 74, 47, 0.16), rgba(11, 107, 105, 0.08));
  border-color: rgba(186, 74, 47, 0.28);
  color: var(--ink);
}

.year-nav .is-pending {
  color: var(--ink-soft);
}

.chip-row,
.link-grid,
.card-grid,
.faq-grid,
.stat-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.chip-link,
.link-card,
.stat-card {
  display: block;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
}

.chip-link strong,
.link-card strong,
.stat-card strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
}

.chip-link span,
.link-card span,
.stat-card span {
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.chip-link:hover,
.link-card:hover,
.stat-card:hover,
.chip-link:focus-visible,
.link-card:focus-visible,
.stat-card:focus-visible {
  border-color: rgba(186, 74, 47, 0.24);
  transform: translateY(-2px);
}

.section-stack {
  display: grid;
  gap: 20px;
}

.section-card,
.table-panel,
.legal-card {
  padding: 28px;
}

.year-calendar-section {
  overflow: hidden;
}

.calendar-frame {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
}

.calendar-banner {
  padding: 26px 28px;
  background: #4f5a87;
  color: #fff;
  font-size: clamp(1.55rem, 2.5vw, 2rem);
  font-family: var(--font-serif);
  letter-spacing: 0.04em;
}

.calendar-stripe {
  height: 110px;
  background:
    repeating-linear-gradient(
      -45deg,
      rgba(79, 90, 135, 0.04),
      rgba(79, 90, 135, 0.04) 6px,
      rgba(255, 255, 255, 0.7) 6px,
      rgba(255, 255, 255, 0.7) 12px
    ),
    rgba(255, 255, 255, 0.92);
}

.year-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  padding: 18px 18px 8px;
}

.mini-month {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
}

.mini-month-head {
  padding: 6px 10px;
  background: #163d78;
  color: #fff;
  text-align: center;
  font-weight: 700;
  font-size: 1.08rem;
}

.mini-weekdays,
.mini-days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.mini-weekdays span,
.mini-days span {
  display: grid;
  place-items: center;
  min-height: 28px;
  border-right: 1px solid rgba(22, 61, 120, 0.12);
  border-bottom: 1px solid rgba(22, 61, 120, 0.12);
  font-size: 0.92rem;
}

.mini-weekdays span:nth-child(7n),
.mini-days span:nth-child(7n) {
  border-right: none;
}

.mini-weekdays span {
  min-height: 24px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
}

.mini-days span {
  color: #243a55;
  background: rgba(241, 243, 247, 0.65);
}

.mini-days .is-empty {
  background: rgba(235, 237, 241, 0.72);
}

.mini-days .is-sun {
  color: #c75a5a;
}

.mini-days .is-sat {
  color: #5d78b7;
}

.mini-days .is-holiday {
  background: rgba(243, 146, 146, 0.52);
}

.mini-days .is-observed {
  background: rgba(107, 193, 214, 0.45);
}

.calendar-note {
  margin: 0;
  padding: 0 20px 18px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.section-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.section-header p {
  max-width: 72ch;
  color: var(--ink-soft);
}

.breadcrumbs {
  margin-bottom: 14px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.breadcrumbs a {
  color: inherit;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

.table-scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
}

th,
td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

thead th {
  font-size: 0.9rem;
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.64);
}

tbody tr:last-child td {
  border-bottom: none;
}

.table-note {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.calendar-list,
.source-list ul,
.plain-list,
.faq-list {
  margin: 0;
  padding-left: 1.1rem;
}

.calendar-list li,
.source-list li,
.plain-list li,
.faq-list li {
  margin-bottom: 8px;
}

.source-list {
  padding: 22px 24px;
}

.source-list h3 {
  margin-bottom: 10px;
}

.note-card {
  padding: 20px 22px;
}

.note-card p:last-child,
.legal-card p:last-child,
.section-card p:last-child,
.faq-item p:last-child,
.source-list p:last-child {
  margin-bottom: 0;
}

.faq-grid {
  align-items: start;
}

.faq-item {
  padding: 20px 22px;
}

.faq-item h3 {
  margin-bottom: 8px;
  font-size: 1.02rem;
}

.legal-card h2 {
  margin-bottom: 12px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(255, 252, 247, 0.8);
  backdrop-filter: blur(10px);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 20px;
  padding: 26px 0 34px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

.footer-links a {
  color: var(--ink-soft);
  text-decoration: none;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--brand-deep);
}

.muted {
  color: var(--ink-soft);
}

.compact {
  font-size: 0.94rem;
}

.callout {
  border-left: 4px solid var(--brand);
  padding-left: 14px;
}

@media (max-width: 920px) {
  .hero-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-links {
    justify-content: flex-start;
  }

  .year-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav {
    justify-content: flex-start;
  }

  .page-shell {
    width: min(calc(100% - 22px), var(--content-width));
    padding-bottom: 48px;
  }

  .hero,
  .section-card,
  .table-panel,
  .legal-card {
    padding: 22px;
  }

  .calendar-banner {
    padding: 20px 22px;
  }

  .calendar-stripe {
    height: 72px;
  }

  .year-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    padding: 14px 14px 6px;
  }

  .mini-weekdays span,
  .mini-days span {
    min-height: 26px;
    font-size: 0.84rem;
  }

  .link-grid,
  .card-grid,
  .faq-grid,
  .stat-grid {
    grid-template-columns: 1fr;
  }

  table,
  thead,
  tbody,
  th,
  td,
  tr {
    display: block;
    min-width: 100%;
  }

  thead {
    display: none;
  }

  tbody {
    display: grid;
    gap: 14px;
  }

  tr {
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.76);
    overflow: hidden;
  }

  td {
    border-bottom: 1px solid var(--line);
    padding: 10px 14px;
  }

  td:last-child {
    border-bottom: none;
  }

  td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 4px;
    color: var(--ink-soft);
    font-size: 0.82rem;
    font-weight: 700;
  }
}

@media (max-width: 520px) {
  .year-grid {
    grid-template-columns: 1fr;
  }
}