:root {
  --color-primary: #e43a3d;
  --color-primary-dark: #bd2228;
  --color-primary-soft: #fff0ef;
  --color-accent: #f2a44a;
  --color-ink: #171718;
  --color-text: #3f3a38;
  --color-muted: #6d6663;
  --color-surface: #ffffff;
  --color-bg: #fff9f7;
  --color-bg-soft: #f4f2f1;
  --color-border: #e6dfdc;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;
  --text-4xl: 3rem;
  --text-5xl: 4rem;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --radius-sm: 0.75rem;
  --radius-md: 1.25rem;
  --radius-lg: 2rem;
  --shadow-sm: 0 8px 24px rgba(42, 24, 21, 0.07);
  --shadow-md: 0 20px 60px rgba(42, 24, 21, 0.12);
  --shadow-button: 0 6px 0 #171718;
  --container: 76rem;
  --reading: 46rem;
  --transition: 240ms ease;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-bg);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
}
.container { width: min(calc(100% - 2rem), var(--container)); margin-inline: auto; }
.reading-width { width: min(100%, var(--reading)); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary-dark);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.16em;
}
.eyebrow::before { content: ""; width: 1.5rem; height: 2px; background: currentColor; }
.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  background: rgba(255, 249, 247, 0.94);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.site-header.is-scrolled { border-color: var(--color-border); box-shadow: var(--shadow-sm); }
.header-inner { min-height: 4.75rem; display: flex; align-items: center; gap: var(--space-4); }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); flex: 0 0 auto; }
.brand-mark {
  display: block;
  width: 6.8rem;
  height: 3rem;
  overflow: hidden;
  color: transparent;
  background: url("../images/official-logo.png") center / contain no-repeat;
  font-size: 0;
}
.brand-copy { display: none; }
.brand-name { display: block; color: var(--color-ink); font-weight: 800; line-height: 1.25; }
.brand-note { display: block; color: var(--color-muted); font-size: var(--text-xs); line-height: 1.3; }
.site-nav {
  position: absolute;
  top: calc(100% + 1px);
  left: 1rem;
  right: 1rem;
  display: none;
  padding: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}
.site-nav.is-open { display: grid; }
.site-nav a { min-height: 2.75rem; display: flex; align-items: center; padding-inline: var(--space-4); border-radius: var(--radius-sm); font-size: var(--text-sm); font-weight: 650; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--color-primary-dark); background: var(--color-primary-soft); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: var(--space-3); }
.menu-button {
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  cursor: pointer;
}
.menu-button svg { width: 1.25rem; height: 1.25rem; }
.visit-button {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-5);
  color: #fff;
  background: var(--color-primary);
  border: 2px solid var(--color-ink);
  border-radius: 999px;
  box-shadow: 3px 3px 0 var(--color-ink);
  font-size: var(--text-sm);
  font-weight: 800;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}
.visit-button:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: 4px 5px 0 var(--color-ink); }
.hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-12) 0 var(--space-16);
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.18), var(--color-bg) 82%), url("../images/official-background.png");
  background-position: center top, center top;
  background-repeat: no-repeat, repeat-x;
  background-size: 100% 100%, auto 15rem;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 52%;
  height: 28rem;
  opacity: 0.32;
  background-image: radial-gradient(var(--color-primary) 1.2px, transparent 1.2px);
  background-size: 17px 17px;
  pointer-events: none;
}
.hero-grid { position: relative; display: grid; gap: var(--space-10); }
.hero h1 {
  max-width: 12ch;
  margin: var(--space-4) 0 var(--space-5);
  color: var(--color-ink);
  font-size: clamp(2.25rem, 9vw, var(--text-5xl));
  line-height: 1.16;
  letter-spacing: -0.055em;
}
.hero-lead { max-width: 36rem; margin: 0; color: var(--color-muted); font-size: var(--text-lg); line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-4); margin-top: var(--space-6); }
.hero-actions .visit-button { min-height: 3.25rem; padding-inline: var(--space-8); font-size: var(--text-base); }
.hero-note { color: var(--color-muted); font-size: var(--text-sm); font-weight: 650; }
.interface-stack { position: relative; min-height: 22rem; display: grid; place-items: center; }
.interface-card {
  width: min(100%, 31rem);
  overflow: hidden;
  background: #fff;
  border: 2px solid var(--color-ink);
  border-radius: var(--radius-md);
  box-shadow: 14px 16px 0 rgba(23, 23, 24, 0.12);
}
.interface-card.secondary { position: absolute; width: 74%; transform: translate(2.4rem, -1.8rem) rotate(4deg); opacity: 0.5; }
.interface-card.primary { position: relative; transform: rotate(-2deg); }
.browser-bar { height: 2.75rem; display: flex; align-items: center; gap: 0.4rem; padding: 0 var(--space-4); background: var(--color-bg-soft); border-bottom: 1px solid var(--color-border); }
.browser-bar span { width: 0.62rem; height: 0.62rem; border-radius: 50%; background: #c9c2bf; }
.browser-bar span:first-child { background: var(--color-primary); }
.interface-body { padding: var(--space-5); }
.interface-brand { display: flex; align-items: center; justify-content: space-between; padding-bottom: var(--space-4); border-bottom: 2px solid var(--color-ink); }
.interface-brand strong { color: var(--color-ink); font-size: var(--text-xl); letter-spacing: -0.04em; }
.interface-brand small { color: var(--color-primary-dark); font-weight: 800; }
.interface-tabs { display: flex; gap: var(--space-2); padding: var(--space-4) 0; overflow: hidden; }
.interface-tabs span { flex: 0 0 auto; padding: 0.3rem 0.65rem; background: var(--color-primary-soft); border-radius: 999px; color: var(--color-primary-dark); font-size: var(--text-xs); font-weight: 700; }
.interface-row { display: grid; grid-template-columns: 3.25rem 1fr auto; align-items: center; gap: var(--space-3); padding: var(--space-3) 0; border-top: 1px solid var(--color-border); }
.interface-thumb { aspect-ratio: 1; display: grid; place-items: center; color: #fff; background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); border-radius: 0.6rem; font-weight: 900; }
.interface-row strong { display: block; color: var(--color-ink); font-size: var(--text-sm); line-height: 1.4; }
.interface-row small { color: var(--color-muted); font-size: var(--text-xs); }
.interface-row b { color: var(--color-primary-dark); font-size: var(--text-xs); }
.fact-strip { border-block: 1px solid var(--color-border); background: var(--color-surface); }
.fact-list { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; padding: var(--space-5) 0; list-style: none; }
.fact-list li { padding: var(--space-2) var(--space-3); border-right: 1px solid var(--color-border); text-align: center; }
.fact-list li:nth-child(even) { border-right: 0; }
.fact-list strong { display: block; color: var(--color-ink); font-size: var(--text-lg); }
.fact-list span { color: var(--color-muted); font-size: var(--text-xs); }
.home-section { padding: var(--space-16) 0; }
.home-section.alt { background: var(--color-surface); border-block: 1px solid var(--color-border); }
.section-grid { display: grid; gap: var(--space-10); align-items: center; }
.section-copy h2, .section-heading h2 { margin: var(--space-3) 0 var(--space-4); color: var(--color-ink); font-size: clamp(var(--text-2xl), 7vw, var(--text-4xl)); line-height: 1.25; letter-spacing: -0.04em; }
.section-copy p { margin: 0 0 var(--space-4); }
.text-link { color: var(--color-primary-dark); font-weight: 750; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
.content-window { padding: var(--space-6); background: var(--color-ink); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.content-window-head { display: flex; justify-content: space-between; align-items: center; color: #fff; border-bottom: 1px solid #3c3c3e; padding-bottom: var(--space-4); }
.content-window-head strong { font-size: var(--text-lg); }
.content-window-head span { color: #bdb8b6; font-size: var(--text-xs); }
.category-cloud { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); padding-top: var(--space-5); }
.category-tag { min-height: 5.5rem; display: flex; flex-direction: column; justify-content: space-between; padding: var(--space-4); color: #fff; background: #262628; border: 1px solid #3d3d40; border-radius: var(--radius-sm); }
.category-tag:nth-child(3n+1) { background: var(--color-primary); border-color: var(--color-primary); }
.category-tag strong { font-size: var(--text-base); }
.category-tag small { color: #ddd7d4; font-size: var(--text-xs); }
.category-tag:nth-child(3n+1) small { color: #fff4f3; }
.ticket-grid { display: grid; gap: var(--space-4); margin-top: var(--space-8); }
.ticket {
  position: relative;
  min-height: 12rem;
  padding: var(--space-6);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.ticket::after { content: ""; position: absolute; right: -2rem; bottom: -2rem; width: 7rem; height: 7rem; border: 1rem solid var(--color-primary-soft); border-radius: 50%; }
.ticket:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.ticket-number { color: var(--color-primary); font-size: var(--text-sm); font-weight: 900; }
.ticket h3 { margin: var(--space-5) 0 var(--space-2); color: var(--color-ink); font-size: var(--text-xl); }
.ticket p { position: relative; z-index: 1; margin: 0; color: var(--color-muted); font-size: var(--text-sm); }
.official-gallery { display: grid; gap: var(--space-4); margin-top: var(--space-8); }
.official-shot { margin: 0; overflow: hidden; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.official-shot img { width: 100%; border-bottom: 1px solid var(--color-border); }
.official-shot figcaption { padding: var(--space-4) var(--space-5); color: var(--color-muted); font-size: var(--text-sm); }
.steps { display: grid; gap: var(--space-5); margin-top: var(--space-8); counter-reset: steps; }
.step { counter-increment: steps; display: grid; grid-template-columns: 3.25rem 1fr; gap: var(--space-4); align-items: start; padding-top: var(--space-5); border-top: 1px solid var(--color-border); }
.step::before { content: counter(steps, decimal-leading-zero); color: var(--color-primary); font-size: var(--text-xl); font-weight: 800; }
.step h3 { margin: 0 0 var(--space-2); color: var(--color-ink); font-size: var(--text-lg); }
.step p { margin: 0; color: var(--color-muted); }
.scene-grid { display: grid; gap: var(--space-4); margin-top: var(--space-8); }
.scene-card { padding: var(--space-6); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.scene-card svg { width: 2rem; height: 2rem; color: var(--color-primary); }
.scene-card h3 { margin: var(--space-5) 0 var(--space-2); color: var(--color-ink); font-size: var(--text-lg); }
.scene-card p { margin: 0; color: var(--color-muted); }
.safety-panel { display: grid; gap: var(--space-6); padding: var(--space-8); color: #fff; background: var(--color-ink); border-radius: var(--radius-lg); }
.safety-panel h2 { margin: 0; color: #fff; font-size: var(--text-2xl); line-height: 1.35; }
.safety-panel p { margin: 0; color: #d6d0ce; }
.safety-list { display: grid; gap: var(--space-3); margin: 0; padding: 0; list-style: none; }
.safety-list li { position: relative; padding-left: 1.6rem; }
.safety-list li::before { content: ""; position: absolute; left: 0; top: 0.68rem; width: 0.6rem; height: 0.6rem; background: var(--color-primary); border-radius: 50%; }
.breadcrumbs { padding: var(--space-6) 0 var(--space-3); color: var(--color-muted); font-size: var(--text-sm); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: var(--space-2); margin: 0; padding: 0; list-style: none; }
.breadcrumbs li + li::before { content: "/"; margin-right: var(--space-2); color: #a39b97; }
.breadcrumbs a:hover { color: var(--color-primary-dark); }
.page-intro { padding: var(--space-5) 0 var(--space-12); border-bottom: 1px solid var(--color-border); }
.page-intro h1 { max-width: 18ch; margin: 0 0 var(--space-4); color: var(--color-ink); font-size: clamp(1.75rem, 7vw, 2.75rem); line-height: 1.3; letter-spacing: -0.035em; }
.page-intro p { max-width: 44rem; margin: 0; color: var(--color-muted); font-size: var(--text-lg); }
.article { padding: var(--space-4) 0 var(--space-16); }
.article-section { padding: var(--space-10) 0; border-bottom: 1px solid var(--color-border); }
.article-section:last-child { border-bottom: 0; }
.article-section h2 { position: relative; margin: 0 0 var(--space-5); padding-left: 3.75rem; color: var(--color-ink); font-size: var(--text-2xl); line-height: 1.4; }
.article-section h2::before { content: attr(data-index); position: absolute; left: 0; top: 0.1rem; color: var(--color-primary); font-size: var(--text-sm); font-weight: 900; letter-spacing: 0.08em; }
.article-section p { margin: 0 0 var(--space-4); }
.article-section ul { margin: var(--space-4) 0 0; padding-left: 1.35rem; }
.article-section li { margin-bottom: var(--space-2); }
.info-grid { display: grid; gap: var(--space-3); margin-top: var(--space-5); }
.info-card { padding: var(--space-5); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-sm); }
.info-card strong { display: block; color: var(--color-ink); margin-bottom: var(--space-2); }
.note-box { margin-top: var(--space-5); padding: var(--space-5); background: var(--color-primary-soft); border-left: 4px solid var(--color-primary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.note-box strong { color: var(--color-primary-dark); }
.data-table { width: 100%; margin-top: var(--space-5); border-collapse: collapse; background: var(--color-surface); border-radius: var(--radius-sm); overflow: hidden; box-shadow: 0 0 0 1px var(--color-border); }
.data-table th, .data-table td { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-border); text-align: left; vertical-align: top; }
.data-table th { width: 34%; color: var(--color-ink); background: var(--color-bg-soft); font-size: var(--text-sm); }
.data-table tr:last-child th, .data-table tr:last-child td { border-bottom: 0; }
.faq-groups { display: grid; gap: var(--space-10); }
.faq-group h2 { margin: 0 0 var(--space-4); color: var(--color-ink); font-size: var(--text-xl); }
.faq-item { border-top: 1px solid var(--color-border); }
.faq-item:last-child { border-bottom: 1px solid var(--color-border); }
.faq-item summary { min-height: 3.75rem; display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); color: var(--color-ink); font-weight: 750; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--color-primary); font-size: var(--text-xl); font-weight: 500; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 0 var(--space-5); color: var(--color-muted); }
.faq-answer p { margin: 0; }
.site-footer { padding: var(--space-10) 0; background: var(--color-surface); border-top: 1px solid var(--color-border); }
.footer-grid { display: grid; gap: var(--space-6); }
.footer-copy { max-width: 40rem; }
.footer-copy p { margin: var(--space-3) 0 0; color: var(--color-muted); font-size: var(--text-sm); }
.footer-meta { color: var(--color-muted); font-size: var(--text-sm); }
.footer-meta p { margin: 0 0 var(--space-2); }
.footer-warning { color: var(--color-primary-dark); font-weight: 750; }
.has-motion .home-page .reveal { opacity: 0; transform: translateY(18px); transition: opacity 520ms ease, transform 520ms ease; }
.has-motion .home-page .reveal.is-visible { opacity: 1; transform: none; }

@media (min-width: 48rem) {
  .container { width: min(calc(100% - 4rem), var(--container)); }
  .brand-mark { width: 7.6rem; }
  .hero { padding: var(--space-20) 0; }
  .hero-grid { grid-template-columns: repeat(12, 1fr); align-items: center; }
  .hero-copy { grid-column: span 6; }
  .interface-stack { grid-column: span 6; min-height: 30rem; }
  .fact-list { grid-template-columns: repeat(4, 1fr); }
  .fact-list li:nth-child(even) { border-right: 1px solid var(--color-border); }
  .fact-list li:last-child { border-right: 0; }
  .home-section { padding: var(--space-24) 0; }
  .section-grid { grid-template-columns: repeat(12, 1fr); gap: var(--space-12); }
  .section-copy { grid-column: span 5; }
  .section-visual { grid-column: span 7; }
  .section-grid.reverse .section-copy { grid-column: 8 / span 5; }
  .section-grid.reverse .section-visual { grid-column: 1 / span 6; grid-row: 1; }
  .ticket-grid { grid-template-columns: repeat(3, 1fr); }
  .official-gallery { grid-template-columns: repeat(2, 1fr); }
  .official-shot:first-child { grid-column: 1 / -1; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .step { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: repeat(3, 1fr); }
  .safety-panel { grid-template-columns: 5fr 7fr; align-items: center; padding: var(--space-12); }
  .footer-grid { grid-template-columns: 7fr 5fr; align-items: end; }
  .footer-meta { text-align: right; }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 64rem) {
  .site-nav { position: static; display: flex; align-items: center; justify-content: center; gap: var(--space-1); margin-inline: auto; padding: 0; background: transparent; border: 0; border-radius: 0; box-shadow: none; }
  .site-nav a { padding-inline: var(--space-3); }
  .menu-button { display: none; }
  .header-actions { margin-left: 0; }
}

@media (max-width: 27rem) {
  .visit-button { padding-inline: var(--space-4); }
  .brand-mark { width: 5.8rem; height: 2.65rem; }
  .hero { padding-top: var(--space-8); }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .interface-stack { min-height: 19rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}