:root {
  --color-night: #0B0E1A;
  --color-nebula: #2B1D4A;
  --color-gold: #F5C044;
  --color-green: #00E58F;
  --color-silver: #E6E8F0;
  --color-steel: #9AA3B2;
  --color-moon: #1C2230;
  --color-red: #E46962;
  --color-line: rgba(230,232,240,0.12);
  --color-line-strong: rgba(245,192,68,0.3);
  --font-head: "Chakra Petch", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Space Grotesk", "JetBrains Mono", "SFMono-Regular", "Consolas", "Menlo", monospace;
  --container-w: 1200px;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-night);
  color: var(--color-silver);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1100px 700px at 85% -10%, rgba(43,29,74,0.55), transparent 60%),
    radial-gradient(800px 500px at 0% 100%, rgba(0,229,143,0.05), transparent 55%),
    radial-gradient(600px 400px at 30% 10%, rgba(245,192,68,0.06), transparent 60%);
}

#main-content {
  position: relative;
  z-index: 1;
}

.site-footer {
  position: relative;
  z-index: 1;
}

ul,
ol {
  list-style: none;
}

a {
  color: var(--color-gold);
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

a:hover {
  color: var(--color-green);
}

button {
  font-family: inherit;
  cursor: pointer;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-silver);
  letter-spacing: 0.02em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

h3 {
  font-size: 1.25rem;
}

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

:focus-visible {
  outline: 2px solid var(--color-green);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 300;
  background: var(--color-gold);
  color: #1a1200;
  padding: 0.6rem 1.2rem;
  font-family: var(--font-head);
  font-weight: 700;
  transform: translateY(-150%);
  transition: transform 0.3s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

.progress-star {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 200;
  pointer-events: none;
  background: transparent;
}

.progress-star span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-green) 100%);
  box-shadow: 0 0 10px rgba(245,192,68,0.7);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,14,26,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-line);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(90deg, var(--color-gold) 0%, rgba(245,192,68,0) 40%);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1200px, calc(100% - 2rem));
  margin-inline: auto;
  min-height: var(--header-h);
  padding-block: 0.5rem;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.brand-mark {
  position: relative;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid rgba(245,192,68,0.6);
  transform: rotate(45deg);
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(245,192,68,0.12), rgba(0,229,143,0.05));
}

.brand-mark__star {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.8rem;
  height: 0.8rem;
  transform: translate(-50%, -50%) rotate(-45deg);
  background: var(--color-gold);
  clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}

.brand-mark__orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1.5rem;
  height: 1.5rem;
  transform: translate(-50%, -50%) rotate(-45deg);
  border: 1px solid rgba(0,229,143,0.7);
  border-radius: 50%;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  min-width: 0;
}

.brand-name {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  color: var(--color-steel);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 24ch;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid var(--color-line);
  color: var(--color-silver);
  padding: 0.6rem 0.9rem;
  transition: border-color 0.3s, color 0.3s;
}

.nav-toggle:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.nav-toggle__line {
  width: 18px;
  height: 2px;
  background: currentColor;
  display: block;
}

.nav-toggle__text {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-drawer {
  display: flex;
  align-items: center;
}

.nav-drawer__header,
.nav-drawer__close,
.nav-drawer__note {
  display: none;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav-link {
  display: inline-block;
  padding: 0.55rem 0.85rem;
  color: var(--color-silver);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-bottom: 2px solid transparent;
  transition: color 0.3s, border-color 0.3s, background 0.3s;
}

.nav-link:hover {
  color: var(--color-gold);
  border-bottom-color: rgba(245,192,68,0.4);
  background: rgba(245,192,68,0.06);
}

.nav-link[aria-current="page"] {
  color: var(--color-gold);
  border-bottom-color: var(--color-green);
  background: rgba(0,229,143,0.07);
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 98;
  background: rgba(11,14,26,0.72);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}

.nav-backdrop.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.content-container {
  width: min(1200px, calc(100% - 2rem));
  margin-inline: auto;
}

.section {
  padding: 3rem 0;
}

.breadcrumbs {
  padding: 1rem 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-steel);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--color-steel);
  opacity: 0.5;
}

.breadcrumbs a {
  color: var(--color-gold);
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-steel);
}

.page-hero {
  position: relative;
  padding: clamp(2.5rem, 6vw, 5.5rem) 0 2.5rem;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  clip-path: polygon(0 0, 100% 0, 100% 82%, 0 100%);
  background: linear-gradient(120deg, rgba(43,29,74,0.5), transparent 60%);
  pointer-events: none;
}

.page-hero__inner {
  position: relative;
  z-index: 1;
  width: min(1200px, calc(100% - 2rem));
  margin-inline: auto;
}

.page-hero__title {
  max-width: 14em;
}

.page-hero__lead {
  margin-top: 1rem;
  max-width: 60ch;
  color: var(--color-steel);
}

.page-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.hero-index {
  margin-top: 2rem;
  display: grid;
  gap: 0;
  max-width: 760px;
  border-top: 1px solid var(--color-line);
}

.hero-index__item {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--color-line);
}

.hero-index__num {
  font-family: var(--font-mono);
  color: var(--color-gold);
  font-size: 0.7rem;
}

.hero-index__label {
  color: var(--color-steel);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-index__link {
  color: var(--color-silver);
  font-weight: 500;
  transition: color 0.3s, padding-left 0.3s;
}

.hero-index__link:hover {
  color: var(--color-green);
  padding-left: 0.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.5rem;
  border: 1px solid var(--color-line);
  background: transparent;
  color: var(--color-silver);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all 0.3s var(--ease);
}

.btn:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.btn-primary {
  background: var(--color-gold);
  color: #201500;
  border-color: var(--color-gold);
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--color-green);
  border-color: var(--color-green);
  color: #001a10;
  box-shadow: 0 0 24px rgba(0,229,143,0.25);
}

.btn-ghost {
  border-color: rgba(245,192,68,0.4);
  color: var(--color-gold);
}

.btn-ghost:hover {
  border-color: var(--color-green);
  color: var(--color-green);
  box-shadow: 0 0 16px rgba(0,229,143,0.15);
}

.btn[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}

.exhibit-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid rgba(245,192,68,0.35);
  color: var(--color-gold);
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  font-family: var(--font-mono);
}

.exhibit-label::before {
  content: "◆";
  color: var(--color-green);
  font-size: 0.5rem;
}

.zone-topic {
  position: relative;
  padding: 3.5rem 0;
  border-top: 1px solid var(--color-line);
}

.zone-topic::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(245,192,68,0.3), transparent 50%);
}

.zone-topic__header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.zone-topic__header::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(245,192,68,0.3), transparent);
}

.zone-topic__title {
  font-size: 1.75rem;
}

.plate-note {
  position: relative;
  padding: 1rem 1.25rem 1rem 1.5rem;
  border-left: 2px solid var(--color-gold);
  background: rgba(230,232,240,0.03);
  color: var(--color-steel);
  font-size: 0.875rem;
}

.plate-note::after {
  content: "NOTE";
  position: absolute;
  top: -0.55rem;
  right: 0.75rem;
  background: var(--color-night);
  padding: 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
}

.info-card {
  position: relative;
  padding: 1.5rem;
  background: linear-gradient(150deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  border: 1px solid var(--color-line);
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}

.info-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-top: 26px solid rgba(245,192,68,0.25);
  border-left: 26px solid transparent;
}

.info-card:hover {
  border-color: rgba(0,229,143,0.5);
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(0,0,0,0.3);
}

.info-card__title {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--color-silver);
  margin-bottom: 0.5rem;
}

.info-card__text {
  color: var(--color-steel);
  font-size: 0.9rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 1.5rem;
}

.tag-pill {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--color-line);
  border-radius: 0;
  color: var(--color-steel);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  background: rgba(230,232,240,0.03);
}

.tag-pill--gold {
  color: var(--color-gold);
  border-color: rgba(245,192,68,0.5);
}

.tag-pill--green {
  color: var(--color-green);
  border-color: rgba(0,229,143,0.5);
}

.meta-line {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-steel);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.meta-line span::before {
  content: "//";
  color: var(--color-green);
  margin-right: 0.25rem;
}

.panel {
  border: 1px solid var(--color-line);
  background: var(--color-moon);
}

.panel__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 1.25rem;
  background: none;
  border: none;
  color: var(--color-silver);
  font-family: var(--font-head);
  font-size: 1rem;
  text-align: left;
}

.panel__toggle::after {
  content: "+";
  color: var(--color-gold);
  font-family: var(--font-mono);
  font-size: 1.2rem;
  transition: transform 0.3s;
}

.panel[data-open] .panel__toggle::after {
  transform: rotate(45deg);
  color: var(--color-green);
}

.panel__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s var(--ease);
}

.panel__body > div {
  overflow: hidden;
}

.panel[data-open] .panel__body {
  grid-template-rows: 1fr;
}

.panel[data-open] .panel__body > div {
  padding: 0 1.25rem 1rem;
}

.timeline {
  list-style: none;
  border-left: 1px solid var(--color-line);
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.timeline__item {
  position: relative;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -1.88rem;
  top: 0.35rem;
  width: 0.6rem;
  height: 0.6rem;
  background: var(--color-gold);
  transform: rotate(45deg);
  border: 2px solid var(--color-night);
}

.timeline__meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-green);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline__title {
  font-weight: 700;
  color: var(--color-silver);
  margin-top: 0.25rem;
}

.timeline__text {
  color: var(--color-steel);
  font-size: 0.875rem;
}

.image-ratio {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-nebula), var(--color-night));
  border: 1px solid var(--color-line);
}

.image-ratio::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 70% 20%, rgba(245,192,68,0.18), transparent 50%),
    radial-gradient(circle at 20% 90%, rgba(0,229,143,0.12), transparent 45%);
}

.image-ratio::after {
  content: "◆";
  position: absolute;
  right: 0.75rem;
  bottom: 0.5rem;
  color: var(--color-gold);
  opacity: 0.4;
  font-size: 0.8rem;
}

.image-ratio--portrait {
  aspect-ratio: 4 / 5;
}

.image-ratio--wide {
  aspect-ratio: 21 / 9;
}

.image-ratio img,
.image-ratio video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.site-footer {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-night) 0%, #14102B 100%);
  border-top: 1px solid var(--color-line);
  margin-top: 4rem;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(500px 300px at 85% 0%, rgba(245,192,68,0.08), transparent 70%),
    radial-gradient(700px 400px at 5% 100%, rgba(0,229,143,0.05), transparent 70%);
}

.site-footer__inner {
  position: relative;
  z-index: 1;
  width: min(1200px, calc(100% - 2rem));
  margin-inline: auto;
  padding: 3.5rem 0 1.75rem;
}

.footer-primary {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 2rem;
  align-items: start;
  margin-bottom: 2.5rem;
}

.footer-brand .brand-lockup {
  margin-bottom: 1.25rem;
}

.footer-tagline {
  color: var(--color-silver);
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

.trust-statement {
  color: var(--color-steel);
  font-size: 0.8rem;
  max-width: 38ch;
  line-height: 1.8;
  border-left: 2px solid rgba(245,192,68,0.4);
  padding-left: 0.75rem;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 0 0 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-line);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-links a {
  color: var(--color-steel);
  font-size: 0.875rem;
  transition: color 0.3s, padding-left 0.3s;
}

.footer-links a:hover {
  color: var(--color-green);
  padding-left: 0.25rem;
}

.footer-info {
  color: var(--color-steel);
  font-size: 0.8rem;
  line-height: 1.9;
  margin-top: 0.75rem;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  border-top: 1px solid var(--color-line);
  padding-top: 1.25rem;
  color: var(--color-steel);
  font-size: 0.75rem;
}

.footer-meta__line {
  margin: 0;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

[data-spy-link] {
  transition: color 0.3s, border-color 0.3s;
}

[data-spy-link][aria-current="true"] {
  color: var(--color-green);
  border-bottom-color: var(--color-green);
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 99;
    width: min(84vw, 340px);
    flex-direction: column;
    align-items: stretch;
    background: linear-gradient(160deg, #171129 0%, var(--color-nebula) 100%);
    border-left: 1px solid rgba(245,192,68,0.25);
    padding: 1.25rem 1.5rem 2rem;
    transform: translateX(105%);
    transition: transform 0.45s var(--ease);
    box-shadow: -30px 0 60px rgba(0,0,0,0.5);
    overflow-y: auto;
  }

  .nav-drawer[data-open] {
    transform: translateX(0%);
  }

  .nav-drawer__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-line);
  }

  .nav-drawer__title {
    font-family: var(--font-mono);
    color: var(--color-gold);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
  }

  .nav-drawer__close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    background: transparent;
    border: 1px solid var(--color-line);
    color: var(--color-silver);
    font-size: 1.25rem;
  }

  .nav-drawer__close:hover {
    border-color: var(--color-green);
    color: var(--color-green);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
  }

  .nav-link {
    display: block;
    padding: 0.9rem 0.75rem;
    border-bottom: none;
    border-left: 2px solid transparent;
  }

  .nav-link:hover,
  .nav-link[aria-current="page"] {
    border-left-color: var(--color-green);
    background: linear-gradient(90deg, rgba(0,229,143,0.08), transparent);
  }

  .nav-drawer__note {
    display: block;
    margin-top: auto;
    padding-top: 2rem;
    color: var(--color-steel);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    border-top: 1px solid var(--color-line);
    letter-spacing: 0.08em;
  }

  .footer-primary {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .brand-sub {
    max-width: 18ch;
  }

  .footer-primary {
    grid-template-columns: 1fr;
  }

  .footer-meta {
    flex-direction: column;
    gap: 0.25rem;
  }
}

@media (max-width: 480px) {
  .nav-toggle__text {
    display: none;
  }

  .nav-toggle {
    padding: 0.6rem;
  }

  .brand-sub {
    max-width: 15ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .nav-drawer {
    transition: none;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}