:root {
  --paper: #f2eadf;
  --paper-strong: #fff7ee;
  --paper-soft: #d9ccbb;
  --ink: #1a1511;
  --ink-soft: #4a4139;
  --panel: rgba(37, 30, 26, 0.86);
  --panel-alt: rgba(57, 45, 39, 0.82);
  --panel-soft: rgba(242, 234, 223, 0.08);
  --line: rgba(242, 234, 223, 0.18);
  --line-strong: rgba(242, 234, 223, 0.34);
  --red: #6b1717;
  --red-soft: #8e3535;
  --gold: #b88f4a;
  --glow: rgba(184, 143, 74, 0.22);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--paper);
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(184, 143, 74, 0.16), transparent 28%),
    radial-gradient(circle at 100% 20%, rgba(107, 23, 23, 0.26), transparent 34%),
    linear-gradient(160deg, #241d18 0%, #17120f 48%, #100c0a 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 246, 233, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 246, 233, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.4), transparent 78%);
  pointer-events: none;
  z-index: -2;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 12% 16%, rgba(255, 255, 255, 0.1) 0 1px, transparent 1px),
    radial-gradient(circle at 82% 30%, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px),
    radial-gradient(circle at 30% 76%, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px);
  opacity: 0.28;
  pointer-events: none;
  z-index: -1;
}

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

a {
  color: inherit;
}

a,
button,
summary {
  transition:
    transform 180ms ease,
    color 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease,
    opacity 180ms ease;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 30;
  padding: 0.75rem 1rem;
  color: var(--ink);
  background: var(--paper);
  border-radius: 999px;
}

.skip-link:focus {
  top: 1rem;
}

.page-shell {
  width: min(var(--max-width), calc(100% - 1.75rem));
  margin: 0 auto;
  padding-bottom: 4rem;
}

.section {
  margin-top: 4.5rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
  padding: 1rem 0;
}

.topbar.is-scrolled {
  backdrop-filter: blur(16px);
}

.topbar.is-scrolled::before {
  content: "";
  position: absolute;
  inset: 0 -1rem;
  background: rgba(20, 16, 13, 0.65);
  border-bottom: 1px solid rgba(242, 234, 223, 0.08);
  z-index: -1;
}

.brand {
  width: min(26rem, 48vw);
  flex: 0 0 auto;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem;
}

.nav a {
  text-decoration: none;
  padding: 0.75rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(242, 234, 223, 0.03);
  color: var(--paper-soft);
}

.nav a:hover,
.nav a[aria-current] {
  color: var(--paper);
  border-color: rgba(184, 143, 74, 0.48);
  background: rgba(184, 143, 74, 0.08);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 1.5rem;
  align-items: stretch;
  margin-top: 2rem;
}

.hero-copy,
.hero-panel,
.story-card,
.world-card,
.world-note,
.character-card,
.watch-card,
.faq-list details,
.footer {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(38, 31, 27, 0.92), rgba(22, 18, 15, 0.94));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-copy,
.hero-panel {
  border-radius: 2rem;
}

.hero-copy {
  padding: 3rem;
}

.hero-copy::before,
.hero-panel::before,
.story-card::before,
.world-card::before,
.character-card::before,
.watch-card::before,
.faq-list details::before,
.footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(transparent 0, rgba(255, 255, 255, 0.02) 44%, transparent 45%),
    radial-gradient(circle at top right, rgba(184, 143, 74, 0.12), transparent 32%);
  pointer-events: none;
}

.eyebrow,
.panel-label,
.role-tag,
.watch-label,
.story-kicker {
  margin: 0 0 1rem;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #ddc8a9;
}

h1,
h2,
h3,
.footer-title {
  margin: 0;
  font-family: "Songti SC", "Hiragino Mincho ProN", "Noto Serif CJK SC", serif;
  font-weight: 700;
}

h1 {
  font-size: clamp(3rem, 8vw, 5.2rem);
  line-height: 0.96;
}

h2 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.12;
}

h3 {
  font-size: 1.4rem;
  line-height: 1.2;
}

p,
dd,
dt,
li,
summary {
  line-height: 1.7;
}

.hero-subtitle {
  margin: 1.1rem 0 0;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  color: var(--paper-strong);
  max-width: 12.5em;
}

.hero-dek {
  margin: 1.25rem 0 0;
  max-width: 40rem;
  color: var(--paper-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.button {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(120deg, var(--red), #842121);
  color: var(--paper);
  box-shadow: 0 16px 36px rgba(107, 23, 23, 0.35);
}

.button-secondary {
  background: rgba(242, 234, 223, 0.04);
  border-color: var(--line);
  color: var(--paper);
}

.note-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-top: 2rem;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--gold);
  background: rgba(242, 234, 223, 0.05);
}

.note-card strong {
  flex: 0 0 auto;
}

.hero-panel {
  padding: 1.5rem;
}

.hero-panel-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.panel-badge {
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(184, 143, 74, 0.4);
  background: rgba(184, 143, 74, 0.1);
  color: var(--paper);
  font-size: 0.9rem;
}

.triad-graphic {
  position: relative;
  min-height: 17rem;
  margin-top: 1rem;
  border-radius: 1.5rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(130deg, rgba(242, 234, 223, 0.04), transparent 52%),
    radial-gradient(circle at top, rgba(184, 143, 74, 0.18), transparent 34%),
    rgba(10, 8, 7, 0.3);
}

.triad {
  position: absolute;
  inset-block: 1.5rem;
  border-radius: 1.2rem;
}

.triad-yamato {
  left: 1.4rem;
  width: 28%;
  background: linear-gradient(180deg, rgba(68, 58, 50, 0.96), rgba(42, 35, 30, 0.9));
  transform: skewX(-10deg);
}

.triad-buou {
  left: 36%;
  width: 29%;
  background: linear-gradient(180deg, rgba(126, 34, 34, 0.96), rgba(86, 19, 19, 0.9));
  transform: skewX(-12deg);
}

.triad-seii {
  right: 1.4rem;
  width: 27%;
  background: linear-gradient(180deg, rgba(84, 76, 69, 0.96), rgba(44, 40, 37, 0.9));
  transform: skewX(-8deg);
}

.seal {
  position: absolute;
  left: 50%;
  top: 50%;
  display: grid;
  place-items: center;
  width: 5.75rem;
  height: 5.75rem;
  transform: translate(-50%, -50%);
  border-radius: 1.2rem;
  border: 2px solid var(--paper);
  background: rgba(22, 18, 15, 0.8);
  color: var(--paper);
  font-family: "Songti SC", "Hiragino Mincho ProN", "Noto Serif CJK SC", serif;
  font-size: 2.4rem;
  box-shadow: 0 0 0 6px rgba(242, 234, 223, 0.05);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 1.25rem 0 0;
}

.stat-card {
  padding: 1rem;
  border-radius: 1.25rem;
  border: 1px solid var(--line);
  background: rgba(242, 234, 223, 0.04);
}

.stat-card dt {
  font-size: 0.88rem;
  color: var(--paper-soft);
}

.stat-card dd {
  margin: 0.35rem 0 0;
  font-size: 1.1rem;
  color: var(--paper);
}

.section-heading {
  display: grid;
  gap: 0.8rem;
  max-width: 56rem;
}

.story-grid,
.world-grid,
.character-grid,
.watch-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

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

.story-card,
.world-card,
.character-card,
.watch-card,
.world-note {
  border-radius: 1.5rem;
  padding: 1.4rem;
}

.story-card p:last-child,
.world-card p,
.character-card p,
.watch-card p {
  margin-bottom: 0;
}

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

.world-card {
  min-height: 16.5rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.world-yamato {
  background:
    linear-gradient(180deg, rgba(36, 31, 27, 0.22), rgba(36, 31, 27, 0.92)),
    linear-gradient(130deg, rgba(77, 67, 59, 0.72), rgba(29, 23, 20, 0.94));
}

.world-buou {
  background:
    linear-gradient(180deg, rgba(36, 31, 27, 0.18), rgba(36, 31, 27, 0.9)),
    linear-gradient(130deg, rgba(117, 27, 27, 0.92), rgba(44, 17, 17, 0.94));
}

.world-seii {
  background:
    linear-gradient(180deg, rgba(36, 31, 27, 0.16), rgba(36, 31, 27, 0.9)),
    linear-gradient(130deg, rgba(88, 77, 69, 0.82), rgba(30, 27, 24, 0.94));
}

.world-mark {
  position: absolute;
  top: 1rem;
  right: 1rem;
  color: rgba(242, 234, 223, 0.18);
  font-family: "Songti SC", "Hiragino Mincho ProN", "Noto Serif CJK SC", serif;
  font-size: 3.5rem;
}

.world-note {
  margin-top: 1rem;
}

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

.character-card {
  min-height: 14.25rem;
  display: flex;
  flex-direction: column;
}

.meta {
  margin-top: auto;
  color: #ddc8a9;
}

.watch-grid {
  grid-template-columns: 1fr 1fr 1.15fr;
}

.watch-links ul {
  margin: 0;
  padding-left: 1.1rem;
}

.watch-links a {
  color: var(--paper);
}

.watch-links a:hover {
  color: #f7deb0;
}

.faq-list {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.faq-list details {
  border-radius: 1.4rem;
  padding: 1rem 1.2rem;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  font-size: 1.1rem;
  font-weight: 600;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list p {
  margin: 0.9rem 0 0;
  color: var(--paper-soft);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
  margin-top: 4rem;
  border-radius: 1.75rem;
  padding: 1.5rem;
}

.footer-title {
  font-size: 1.45rem;
}

.footer p {
  margin: 0.4rem 0 0;
  color: var(--paper-soft);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links a {
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 143, 74, 0.45);
}

.footer-links a:hover {
  color: #f7deb0;
}

@media (max-width: 960px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .brand {
    width: min(26rem, 100%);
  }

  .hero,
  .story-grid,
  .world-grid,
  .character-grid,
  .watch-grid,
  .footer {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    padding: 2rem;
  }
}

@media (max-width: 680px) {
  .page-shell {
    width: min(var(--max-width), calc(100% - 1rem));
  }

  .section {
    margin-top: 3.5rem;
  }

  .nav {
    gap: 0.55rem;
  }

  .nav a {
    padding: 0.62rem 0.88rem;
    font-size: 0.92rem;
  }

  .hero-copy,
  .hero-panel,
  .story-card,
  .world-card,
  .world-note,
  .character-card,
  .watch-card,
  .faq-list details,
  .footer {
    border-radius: 1.35rem;
  }

  .hero-copy {
    padding: 1.45rem;
  }

  .hero-panel {
    padding: 1rem;
  }

  .triad-graphic {
    min-height: 14.5rem;
  }

  .seal {
    width: 4.7rem;
    height: 4.7rem;
    font-size: 2rem;
  }

  .stat-grid {
    grid-template-columns: 1fr;
  }

  h2 {
    font-size: 1.7rem;
  }
}