:root {
  --bg: #070707;
  --bg-soft: #111111;
  --panel: rgba(18, 18, 18, 0.94);
  --panel-strong: rgba(25, 25, 25, 0.98);
  --line: rgba(255, 215, 130, 0.20);
  --gold: #d8a94d;
  --gold-strong: #f6d889;
  --gold-deep: #8f6424;
  --text: #f7f2ea;
  --muted: #c9bead;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.40);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: min(1240px, calc(100% - 32px));
  --transition: 0.25s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(216, 169, 77, 0.16), transparent 28%),
    radial-gradient(circle at left center, rgba(143, 100, 36, 0.16), transparent 30%),
    linear-gradient(180deg, #0b0b0b 0%, #050505 100%);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Yu Gothic Medium", "Meiryo", sans-serif;
  line-height: 1.8;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button,
input {
  font: inherit;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

#wrapper {
  overflow: clip;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topline {
  background: rgba(0, 0, 0, 0.72);
  border-bottom: 1px solid rgba(255, 215, 130, 0.08);
  font-size: 13px;
}

.topline__inner,
.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topline__inner {
  min-height: 42px;
}

.topline p,
.brand-copy,
.hero-lead,
.section-heading p,
.content-card p,
.term-card p,
.footer-brand p,
.notice-card p,
.faq-item p,
.kana-section__head p,
.search-status p,
.empty-state p,
.related-card span,
.detail-card p {
  margin: 0;
  color: var(--muted);
}

.utility-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.utility-links a,
.category-chip,
.kana-nav a,
.stat-chip,
.term-tag,
.text-link,
.footer-links a,
.pager-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  transition: var(--transition);
}

.utility-links a:hover,
.utility-links a:focus-visible,
.kana-nav a:hover,
.kana-nav a:focus-visible,
.text-link:hover,
.text-link:focus-visible,
.category-chip:hover,
.category-chip:focus-visible,
.term-card:hover,
.term-card:focus-within,
.footer-links a:hover,
.footer-links a:focus-visible,
.pager-links a:hover,
.pager-links a:focus-visible,
.related-card:hover,
.related-card:focus-visible {
  border-color: rgba(246, 216, 137, 0.48);
  background: linear-gradient(135deg, rgba(216, 169, 77, 0.15), rgba(255, 255, 255, 0.03));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(5, 5, 5, 0.84);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.24);
}

.header-main {
  min-height: 88px;
}

.brand-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.site-logo img {
  width: 248px;
  height: auto;
}

.brand-copy {
  font-size: 12px;
  letter-spacing: 0.08em;
}

.global-nav {
  width: 100%;
  max-width: 780px;
}

.global-nav ul {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
  margin: 0;
  padding: 6px;
  list-style: none;
  border-radius: 18px;
  background: linear-gradient(135deg, #f7df9c 0%, #d7a749 48%, #8f6424 100%);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.32);
}

.global-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 42px;
  padding: 8px 6px;
  border-radius: 12px;
  color: #1d1307;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.35;
  text-align: center;
  transition: var(--transition);
}

.global-nav a:hover,
.global-nav a:focus-visible {
  color: #fff7e6;
  background: rgba(0, 0, 0, 0.18);
}

.menu-toggle {
  display: none;
  min-width: 72px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-weight: 700;
}

.breadcrumb {
  border-top: 1px solid rgba(255, 215, 130, 0.08);
  border-bottom: 1px solid rgba(255, 215, 130, 0.08);
  background: rgba(255, 255, 255, 0.02);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 12px 0;
  list-style: none;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumb li + li::before {
  content: ">";
  margin-right: 8px;
  color: rgba(246, 216, 137, 0.8);
}

.hero-section {
  position: relative;
  padding: 44px 0 30px;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('../img/bg-noise-gold.svg') center/cover no-repeat;
  opacity: 0.28;
  pointer-events: none;
}

.hero-grid,
.notes-grid,
.detail-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 24px;
}

.hero-copy,
.hero-panel__inner,
.search-card,
.content-card,
.kana-section,
.empty-state,
.faq-item,
.detail-card,
.related-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015));
  box-shadow: var(--shadow);
}

.hero-copy,
.hero-panel__inner,
.search-card,
.content-card,
.kana-section,
.empty-state,
.faq-item,
.detail-card {
  border-radius: var(--radius-lg);
}

.hero-copy,
.hero-panel__inner,
.search-card,
.content-card,
.kana-section,
.faq-item,
.empty-state,
.detail-card {
  padding: clamp(24px, 4vw, 38px);
}

.hero-label,
.section-label,
.eyebrow,
.term-reading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold-strong);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-copy h1,
.section-heading h2,
.content-card h2,
.content-card h3,
.kana-section__head h3,
.term-card h4,
.faq-item h3,
.empty-state h3,
.notice-card h2,
.detail-card h2 {
  margin: 0;
  line-height: 1.25;
}

.hero-copy h1 {
  margin-top: 12px;
  font-size: clamp(38px, 5vw, 70px);
}

.hero-subreading {
  margin: 8px 0 0;
  color: var(--gold-strong);
  font-size: 14px;
  letter-spacing: 0.12em;
}

.hero-lead {
  margin-top: 18px;
  max-width: 760px;
  font-size: 16px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 14px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  cursor: pointer;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  color: #211506;
  background: linear-gradient(-135deg, #f4d07a 0%, #d8a94d 52%, #b47e30 100%);
  box-shadow: 0 10px 30px rgba(216, 169, 77, 0.22);
}

.btn-secondary {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.btn-block {
  width: 100%;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0;
  margin: 26px 0 0;
  list-style: none;
}

.stat-chip {
  gap: 10px;
  padding-inline: 16px;
}

.stat-chip strong {
  color: var(--gold-strong);
  font-size: 20px;
}

.stat-chip span {
  color: var(--muted);
  font-size: 13px;
}

.hero-panel__inner {
  display: grid;
  gap: 22px;
  height: 100%;
}

.chip-grid,
.definition-facts,
.footer-links,
.pager-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.definition-facts div {
  flex: 1 1 140px;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(255, 215, 130, 0.14);
  background: rgba(255, 255, 255, 0.03);
}

.definition-facts span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.definition-facts strong {
  display: block;
  margin-top: 4px;
  color: var(--text);
  font-size: 15px;
}

.category-chip {
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.notice-card {
  padding: 22px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 215, 130, 0.18);
  background: linear-gradient(180deg, rgba(216, 169, 77, 0.14), rgba(255, 255, 255, 0.04));
}

.notice-card h2 {
  margin-bottom: 10px;
  font-size: 22px;
}

.section-space {
  padding: 34px 0;
}

.section-heading {
  display: grid;
  gap: 12px;
  margin-bottom: 22px;
}

.section-heading h2 {
  font-size: clamp(28px, 4vw, 46px);
}

.search-card {
  padding: 24px;
}

.search-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 12px;
}

.search-form input {
  width: 100%;
  min-height: 56px;
  padding: 0 18px;
  border: 1px solid rgba(255, 215, 130, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  outline: none;
}

.search-form input::placeholder {
  color: rgba(247, 242, 234, 0.55);
}

.search-form input:focus {
  border-color: rgba(246, 216, 137, 0.48);
  box-shadow: 0 0 0 4px rgba(216, 169, 77, 0.08);
}

.search-status {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 18px;
  margin-top: 12px;
}

#resultsCount {
  color: var(--gold-strong);
  font-weight: 800;
}

.kana-nav {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.kana-nav a {
  flex-direction: column;
  gap: 3px;
  min-height: 72px;
  padding: 10px 12px;
  border-radius: 18px;
}

.kana-nav a span {
  font-size: 16px;
  font-weight: 800;
}

.kana-nav a small {
  color: var(--muted);
  font-size: 12px;
}

.kana-nav a.is-empty {
  opacity: 0.45;
}

.glossary-stack,
.faq-list,
.detail-main {
  display: grid;
  gap: 18px;
}

.kana-section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 24px;
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 215, 130, 0.10);
}

.kana-section__head h3 {
  margin-top: 8px;
  font-size: 28px;
}

.kana-section__head p {
  max-width: 620px;
}

.term-grid,
.content-grid,
.related-grid {
  display: grid;
  gap: 18px;
}

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

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

.term-card,
.content-card,
.faq-item,
.related-card {
  padding: 22px;
}

.term-card {
  display: grid;
  gap: 12px;
  border: 1px solid rgba(255, 215, 130, 0.14);
  border-radius: 22px;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.term-card:hover,
.term-card:focus-within,
.related-card:hover,
.related-card:focus-visible {
  transform: translateY(-4px);
}

.term-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.term-card h4 {
  font-size: 24px;
}

.term-card h4 a {
  color: var(--text);
}

.term-tag {
  min-height: 34px;
  padding: 6px 12px;
  color: var(--gold-strong);
  font-size: 12px;
  font-weight: 700;
}

.keyword-list,
.plain-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.keyword-list li,
.plain-list li {
  padding: 8px 12px;
  border: 1px solid rgba(255, 215, 130, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 12px;
}

.keyword-list--detail li {
  font-size: 13px;
}

.content-card h2,
.content-card h3,
.detail-card h2 {
  margin-top: 10px;
  font-size: 28px;
}

.text-link {
  width: fit-content;
  margin-top: 6px;
  color: var(--gold-strong);
  font-weight: 800;
}

.empty-state {
  padding: 24px;
  margin-bottom: 20px;
  text-align: center;
}

.empty-state h3 {
  font-size: 24px;
  margin-bottom: 10px;
}

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

.detail-side {
  position: relative;
}

.sticky-card {
  position: sticky;
  top: 112px;
}

.lead-text {
  color: var(--text) !important;
  font-size: 18px;
}

.detail-card {
  display: grid;
  gap: 14px;
}

.related-card {
  display: grid;
  gap: 8px;
  border-radius: 22px;
}

.related-card strong {
  font-size: 18px;
  color: var(--text);
}

.pager-links {
  margin-bottom: 8px;
}

.is-hidden {
  display: none !important;
}

.site-footer {
  margin-top: 28px;
  padding: 32px 0 18px;
  border-top: 1px solid rgba(255, 215, 130, 0.08);
  background: rgba(0, 0, 0, 0.55);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: end;
}

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

.footer-copy {
  padding-top: 18px;
}

.footer-copy small {
  color: var(--muted);
}

@media (max-width: 1180px) {
  .term-grid,
  .content-grid--three,
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .notes-grid,
  .footer-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .global-nav ul {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .topline__inner,
  .header-main,
  .kana-section__head,
  .search-status {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-main {
    padding: 18px 0;
  }

  .global-nav {
    display: none;
    max-width: none;
  }

  .global-nav.is-open {
    display: block;
    width: 100%;
  }

  .global-nav ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .search-form,
  .kana-nav,
  .term-grid,
  .content-grid--three,
  .related-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions,
  .hero-stats,
  .utility-links,
  .footer-links,
  .pager-links {
    width: 100%;
  }

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

  .sticky-card {
    position: static;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 20px, 100% - 20px);
  }

  .hero-copy,
  .hero-panel__inner,
  .search-card,
  .content-card,
  .kana-section,
  .faq-item,
  .empty-state,
  .detail-card,
  .related-card {
    padding: 20px;
    border-radius: 22px;
  }

  .hero-copy h1 {
    font-size: clamp(32px, 10vw, 46px);
  }

  .section-heading h2,
  .content-card h2,
  .content-card h3,
  .kana-section__head h3,
  .term-card h4,
  .faq-item h3,
  .detail-card h2 {
    font-size: 24px;
  }

  .global-nav ul {
    grid-template-columns: 1fr;
  }
}