@import url("https://fonts.googleapis.com/css2?family=Cinzel:wght@500;600;700;800&family=Noto+Sans+SC:wght@400;500;700;900&family=Noto+Serif+SC:wght@500;700;900&display=swap");

:root {
  color-scheme: dark;
  --bg: #070508;
  --bg-deep: #0d0810;
  --surface: rgba(23, 13, 20, 0.86);
  --surface-strong: rgba(30, 16, 27, 0.94);
  --surface-soft: rgba(255, 255, 255, 0.05);
  --line: rgba(255, 222, 173, 0.16);
  --line-strong: rgba(239, 187, 109, 0.34);
  --text: #f8f0e6;
  --muted: #cab8a7;
  --accent: #de5931;
  --accent-2: #f0bf72;
  --accent-3: #8b1d20;
  --shadow: 0 32px 90px rgba(0, 0, 0, 0.42);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max-width: 1220px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 10% 12%, rgba(176, 23, 43, 0.22), transparent 28%),
    radial-gradient(circle at 82% 14%, rgba(242, 185, 114, 0.16), transparent 25%),
    radial-gradient(circle at 50% 54%, rgba(135, 27, 34, 0.14), transparent 36%),
    linear-gradient(180deg, #090609 0%, #0a0710 32%, #070508 100%);
  color: var(--text);
  font-family: "Noto Sans SC", "PingFang SC", sans-serif;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
}

body::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent 88%);
}

body::after {
  background:
    radial-gradient(circle at 18% 16%, rgba(255, 235, 205, 0.1) 0 1px, transparent 1px),
    radial-gradient(circle at 72% 20%, rgba(255, 235, 205, 0.09) 0 1px, transparent 1px),
    radial-gradient(circle at 40% 40%, rgba(255, 235, 205, 0.12) 0 1px, transparent 1px),
    radial-gradient(circle at 65% 67%, rgba(255, 235, 205, 0.08) 0 1px, transparent 1px),
    radial-gradient(circle at 28% 74%, rgba(255, 235, 205, 0.08) 0 1px, transparent 1px);
}

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

a {
  color: inherit;
}

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

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 50;
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: #fff6ea;
  color: #180d0a;
}

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

.site-shell {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  padding-bottom: 4rem;
}

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

.topbar.is-scrolled::before {
  opacity: 1;
}

.topbar::before {
  content: "";
  position: absolute;
  inset: 0 -1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: linear-gradient(180deg, rgba(9, 6, 9, 0.9), rgba(9, 6, 9, 0.72));
  backdrop-filter: blur(18px);
  opacity: 0;
  transition: opacity 200ms ease;
  z-index: -1;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-mark {
  width: 2.95rem;
  height: 2.95rem;
  border-radius: 18px;
  box-shadow: 0 16px 40px rgba(157, 37, 32, 0.35);
}

.brand-wordmark {
  width: clamp(172px, 24vw, 268px);
  height: auto;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 2.9rem;
  min-height: 2.9rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  cursor: pointer;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.8rem;
}

.nav a {
  padding: 0.72rem 1.05rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.035);
  color: var(--muted);
  text-decoration: none;
}

.nav a[aria-current="page"],
.nav a:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  color: var(--text);
}

main {
  display: grid;
  gap: 4.5rem;
}

.section {
  display: grid;
  gap: 1.5rem;
}

.panel,
.hero-copy,
.hero-stage,
.card,
.feature-card,
.detail-card,
.faq-item,
.timeline-item,
.guide-step,
.footer-panel {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(24, 13, 21, 0.96), rgba(14, 8, 14, 0.94));
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 1.6rem;
  align-items: stretch;
}

.hero-copy {
  position: relative;
  padding: 2.5rem;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.hero-copy::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(130deg, rgba(255, 255, 255, 0.04), transparent 42%),
    radial-gradient(circle at 78% 18%, rgba(244, 189, 113, 0.12), transparent 27%),
    radial-gradient(circle at 90% 82%, rgba(200, 37, 47, 0.18), transparent 24%);
  pointer-events: none;
}

.eyebrow,
.eyebrow-stack {
  margin: 0;
  color: var(--accent-2);
  font-family: "Cinzel", "Times New Roman", serif;
  font-size: 0.88rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.eyebrow-stack {
  display: inline-flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

h1,
h2,
h3,
h4,
summary {
  margin: 0;
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 {
  max-width: 10ch;
  font-size: clamp(3.1rem, 7vw, 6.1rem);
  line-height: 0.96;
}

h2 {
  font-size: clamp(1.95rem, 4vw, 3.2rem);
  line-height: 1.04;
}

h3 {
  font-size: 1.35rem;
  line-height: 1.2;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.78;
}

.lead {
  max-width: 62ch;
  font-size: 1.03rem;
}

.hero-copy .lead {
  margin-top: 1.15rem;
}

.actions,
.chip-row,
.nav,
.metrics,
.timeline-meta,
.keyword-grid,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.actions {
  margin-top: 1.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.85rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
}

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

.button-primary {
  background: linear-gradient(135deg, #dc6139, #f0bf72);
  color: #1b0a03;
  font-weight: 800;
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.035);
}

.signal-note {
  margin-top: 1.55rem;
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 1rem 1.05rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: #f2ddca;
}

.signal-note strong {
  color: var(--text);
}

.signal-dot {
  width: 0.78rem;
  height: 0.78rem;
  margin-top: 0.3rem;
  border-radius: 50%;
  background: radial-gradient(circle, #fff6dd 0, var(--accent-2) 48%, rgba(240, 191, 114, 0.18) 100%);
  box-shadow: 0 0 24px rgba(240, 191, 114, 0.72);
  flex: none;
}

.metrics {
  margin-top: 1.8rem;
}

.metric {
  min-width: 150px;
  flex: 1 1 160px;
  padding: 1rem 1.05rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.035);
}

.metric-label {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric strong {
  display: block;
  margin-top: 0.45rem;
  font-size: 1rem;
  color: var(--text);
}

.hero-stage {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  padding: 1.15rem;
}

.hero-stage::before {
  content: "";
  position: absolute;
  inset: 2.5rem;
  border-radius: 50%;
  border: 1px solid rgba(240, 191, 114, 0.15);
  box-shadow:
    0 0 0 22px rgba(255, 255, 255, 0.02),
    0 0 90px rgba(200, 39, 48, 0.18);
}

.hero-visual-card {
  position: relative;
  overflow: hidden;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  min-height: 100%;
}

.hero-visual-card img {
  width: 100%;
  height: 100%;
  min-height: 500px;
  object-fit: cover;
}

.hero-visual-caption {
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  display: grid;
  gap: 0.45rem;
  padding: 1rem;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(9, 6, 9, 0.28), rgba(9, 6, 9, 0.86));
  backdrop-filter: blur(10px);
}

.hero-visual-caption strong {
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: 1.15rem;
}

.section-heading {
  display: grid;
  gap: 0.7rem;
  max-width: 54rem;
}

.grid-3,
.grid-2,
.story-grid,
.guide-grid,
.faq-grid,
.footer-grid,
.keyword-grid {
  display: grid;
  gap: 1.15rem;
}

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

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.feature-card,
.detail-card,
.guide-step,
.timeline-item,
.faq-item,
.footer-panel {
  padding: 1.35rem;
  border-radius: var(--radius-lg);
}

.card strong,
.detail-card strong,
.guide-step strong,
.timeline-item strong {
  color: var(--text);
}

.card-title,
.detail-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.card-index {
  color: var(--accent-2);
  font-family: "Cinzel", serif;
  font-size: 0.96rem;
  letter-spacing: 0.18em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.15rem;
}

.feature-card {
  grid-column: span 4;
  display: grid;
  gap: 0.85rem;
}

.feature-card.wide {
  grid-column: span 8;
}

.feature-card .brand-mark-large {
  width: 5rem;
  height: 5rem;
  border-radius: 28px;
}

.chip-row span,
.keyword-grid span,
.timeline-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.35rem 0.72rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(255, 255, 255, 0.04);
  color: #e6d6c7;
  font-size: 0.84rem;
}

.character-card {
  position: relative;
  overflow: hidden;
}

.character-card::after {
  content: "";
  position: absolute;
  inset: auto -2.5rem -3rem auto;
  width: 7rem;
  height: 7rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 191, 114, 0.13), transparent 70%);
}

.character-card h3,
.timeline-item h3,
.guide-step h3,
.faq-item summary {
  margin-bottom: 0.6rem;
}

.timeline {
  position: relative;
  display: grid;
  gap: 1rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 1rem;
  top: 1rem;
  bottom: 1rem;
  width: 1px;
  background: linear-gradient(180deg, rgba(240, 191, 114, 0.5), rgba(255, 255, 255, 0.06));
}

.timeline-item {
  position: relative;
  padding-left: 3rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0.58rem;
  top: 1.45rem;
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 6px rgba(240, 191, 114, 0.08);
}

.keyword-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.keyword-grid span {
  justify-content: center;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
}

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

.faq-item summary {
  list-style: none;
  cursor: pointer;
  color: var(--text);
}

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

.faq-item p {
  margin-top: 0.75rem;
}

.footer-grid {
  grid-template-columns: 1.1fr 0.9fr;
}

.footer-panel {
  display: grid;
  gap: 0.9rem;
}

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

.muted-line {
  color: #dbc9ba;
  font-size: 0.95rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 520ms ease, transform 520ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.page-hero {
  padding-top: 0.4rem;
}

.page-summary {
  max-width: 48rem;
}

@media (max-width: 1080px) {
  .hero,
  .footer-grid,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .feature-card.wide {
    grid-column: span 12;
  }
}

@media (max-width: 860px) {
  .site-shell {
    width: min(var(--max-width), calc(100% - 1rem));
  }

  .topbar {
    align-items: flex-start;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    right: 0;
    display: none;
    padding: 0.8rem;
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(18, 10, 16, 0.98), rgba(11, 7, 12, 0.98));
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow);
  }

  .nav a {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  body.nav-open .nav {
    display: flex;
  }

  .hero-copy,
  .hero-stage {
    padding: 1.4rem;
  }

  .hero-visual-card img {
    min-height: 380px;
  }

  .timeline-item {
    padding-left: 2.5rem;
  }
}

@media (max-width: 560px) {
  h1 {
    max-width: 100%;
    font-size: clamp(2.7rem, 14vw, 4rem);
  }

  .actions,
  .metrics,
  .chip-row {
    gap: 0.65rem;
  }

  .button {
    width: 100%;
  }

  .brand-wordmark {
    width: 172px;
  }
}