:root {
  color-scheme: dark;
  --space-blue-950: #060914;
  --space-blue-900: #0B1026;
  --space-blue-700: #1E2A5A;
  --star-gold-400: #F5C518;
  --neon-purple-500: #9D4EDD;
  --vibrant-orange-500: #FF6B35;
  --text-primary: #F5F7FA;
  --text-secondary: #A0A8B8;
  --glass-light: rgba(255,255,255,0.08);
  --glass-border: rgba(255,255,255,0.16);

  --color-bg: var(--space-blue-950);
  --color-bg-content: var(--space-blue-900);
  --color-surface: var(--space-blue-700);
  --color-accent: var(--star-gold-400);
  --color-accent-soft: rgba(245,197,24,0.14);
  --color-data: var(--neon-purple-500);
  --color-action: var(--vibrant-orange-500);
  --color-text: var(--text-primary);
  --color-text-secondary: var(--text-secondary);
  --color-glass: var(--glass-light);
  --color-glass-border: var(--glass-border);

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-number: "Orbitron", "Bahnschrift", "DIN Alternate", "Roboto", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-index: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;

  --header-width: 280px;
  --header-height-mobile: 68px;
  --container-width: 1160px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --speed: 300ms;
}

html[data-theme="nebula"] {
  --color-accent: var(--neon-purple-500);
  --color-accent-soft: rgba(157,78,221,0.20);
  --color-data: var(--star-gold-400);
  --color-action: var(--vibrant-orange-500);
  --color-surface: #1A1530;
  --color-glass: rgba(157,78,221,0.10);
  --color-glass-border: rgba(157,78,221,0.28);
}

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

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

body,
h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd,
figure,
blockquote {
  margin: 0;
  padding: 0;
}

body {
  padding-left: var(--header-width);
  min-height: 100vh;
  background-color: var(--color-bg);
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(245,197,24,0.7) 0, transparent 100%),
    radial-gradient(1px 1px at 60% 70%, rgba(255,255,255,0.5) 0, transparent 100%),
    radial-gradient(1.5px 1.5px at 80% 20%, rgba(157,78,221,0.8) 0, transparent 100%),
    radial-gradient(1px 1px at 40% 80%, rgba(255,255,255,0.4) 0, transparent 100%),
    radial-gradient(2px 2px at 10% 60%, rgba(245,197,24,0.3) 0, transparent 100%),
    radial-gradient(600px 420px at 85% 5%, rgba(157,78,221,0.14) 0, transparent 70%),
    radial-gradient(800px 500px at 15% 95%, rgba(245,197,24,0.06) 0, transparent 70%);
  background-repeat: no-repeat;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

ul {
  list-style: none;
}

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

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

button {
  padding: 0;
  border: none;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--color-accent);
  color: #060914;
}

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

#main-content {
  display: block;
  min-height: 60vh;
}

html[data-nav-open="true"] {
  overflow: hidden;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
}

.index-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-index);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 4px;
  color: var(--color-accent);
}

.index-label::before {
  content: "[";
  letter-spacing: 0;
  opacity: 0.8;
}

.index-label::after {
  content: "]";
  letter-spacing: 0;
  opacity: 0.8;
}

.exhibition-title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: 2px;
  color: var(--color-text);
}

.exhibition-title::after {
  content: "";
  display: block;
  width: 64px;
  height: 2px;
  margin-top: 20px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
}

.exhibition-lead {
  max-width: 60ch;
  color: var(--color-text-secondary);
  font-size: 16px;
  line-height: 1.8;
}

.glass-card {
  position: relative;
  padding: 24px;
  border: 1px solid var(--color-glass-border);
  border-radius: 16px;
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.data-number {
  font-family: var(--font-number);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 1px;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-index);
  font-size: 13px;
  letter-spacing: 1px;
  cursor: pointer;
  transition: background 0.25s, border-color 0.25s, color 0.25s, box-shadow 0.25s;
}

.button--primary {
  background: var(--color-accent);
  color: #060914;
}

.button--primary:hover {
  box-shadow: 0 0 24px rgba(245,197,24,0.40);
}

html[data-theme="nebula"] .button--primary {
  color: #fff;
}

.button--ghost {
  border-color: var(--color-glass-border);
  background: transparent;
  color: var(--color-text);
}

.button--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-glass);
}

[data-filter] {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--color-glass-border);
  border-radius: 999px;
  background: transparent;
  color: var(--color-text-secondary);
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 1px;
  cursor: pointer;
  transition: background 0.25s, color 0.25s, border-color 0.25s;
}

[data-filter]:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

[data-filter][aria-pressed="true"] {
  border-color: var(--color-data);
  background: var(--color-data);
  color: #fff;
}

[data-filter][data-filter="all"][aria-pressed="true"] {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: #060914;
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

html.js [data-reveal].is-visible,
.is-visible {
  opacity: 1;
  transform: none;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: calc(var(--header-width) + 8px);
  z-index: 300;
  padding: 10px 18px;
  border-radius: 8px;
  background: var(--color-accent);
  color: #060914;
  font-size: 14px;
  transform: translateY(calc(-100% - 16px));
  transition: transform 0.25s;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  width: var(--header-width);
  display: flex;
  flex-direction: column;
  padding: 32px 20px 24px;
  border-right: 1px solid var(--color-glass-border);
  transition: border-color var(--speed) var(--ease-out);
}

.site-header__glaze {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 100%, rgba(245,197,24,0.08) 0, transparent 45%),
    radial-gradient(circle at 100% 40%, rgba(157,78,221,0.10) 0, transparent 38%),
    linear-gradient(165deg, rgba(30,42,90,0.66) 0%, rgba(11,16,38,0.92) 50%, rgba(6,9,20,0.96) 100%);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.site-header__glaze::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  left: -110px;
  bottom: -90px;
  border: 1px solid rgba(245,197,24,0.18);
  border-radius: 50%;
  box-shadow:
    0 0 0 32px rgba(245,197,24,0.04),
    0 0 0 64px rgba(245,197,24,0.025);
}

.site-header__glaze::after {
  content: "";
  position: absolute;
  width: 130px;
  height: 130px;
  left: -44px;
  bottom: 120px;
  border: 1px dashed rgba(157,78,221,0.35);
  border-radius: 50%;
}

.site-header > *:not(.site-header__glaze) {
  position: relative;
  z-index: 2;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: fit-content;
}

.site-brand__logo {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(245,197,24,0.35);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(245,197,24,0.2) 0, rgba(245,197,24,0.02) 100%);
  color: var(--color-accent);
  font-size: 22px;
  line-height: 1;
  box-shadow: 0 0 18px rgba(245,197,24,0.16);
}

.site-brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 6px;
  color: var(--color-text);
}

.site-brand__tag {
  display: block;
  margin-top: 2px;
  font-family: var(--font-index);
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--color-text-secondary);
}

.site-nav {
  z-index: 2;
  margin: 48px 0 32px;
}

.site-nav__list {
  margin: 0;
  padding: 0;
  counter-reset: nav;
}

.site-nav__item {
  counter-increment: nav;
  margin-bottom: 6px;
}

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  border-left: 2px solid transparent;
  border-radius: 10px;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.4;
  transition: color 0.25s, background 0.25s, border-color 0.25s;
}

.site-nav__link::before {
  content: "0" counter(nav);
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--color-accent);
  opacity: 0.7;
}

.site-nav__link:hover {
  border-left-color: var(--color-accent);
  background: var(--color-glass);
  color: var(--color-text);
}

.site-nav__link[aria-current="page"] {
  border-left-color: var(--color-accent);
  background: linear-gradient(90deg, var(--color-accent-soft) 0, transparent 75%);
  color: var(--color-accent);
}

.site-nav__link[aria-current="page"]::before {
  opacity: 1;
}

.site-nav__note {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-glass-border);
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 2px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.site-header__controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
}

.site-control {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--color-glass-border);
  border-radius: 10px;
  background: transparent;
  color: var(--color-text-secondary);
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 1px;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}

.site-control:hover {
  border-color: var(--color-accent);
  background: var(--color-glass);
  color: var(--color-accent);
}

.site-control[aria-pressed="true"] {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.site-control__icon {
  position: relative;
  display: inline-block;
  flex: none;
  width: 16px;
  height: 16px;
}

.site-control__icon::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 10px;
  height: 10px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

.site-control__icon::after {
  content: "";
  position: absolute;
  right: 2px;
  bottom: 3px;
  width: 5px;
  height: 1.5px;
  border-radius: 1px;
  background: currentColor;
  transform: rotate(45deg);
  transform-origin: right center;
}

.site-control__icon--theme::before {
  top: 1px;
  left: 1px;
  width: 14px;
  height: 14px;
  background: linear-gradient(90deg, currentColor 0 50%, transparent 50%);
}

.site-control__icon--theme::after {
  content: none;
}

.site-nav-toggle {
  display: none;
}

.site-index-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 120;
  width: min(420px, 92vw);
  border-left: 1px solid var(--color-glass-border);
  background: linear-gradient(160deg, rgba(30,42,90,0.96) 0%, rgba(11,16,38,0.98) 100%), var(--color-bg-content);
  box-shadow: -24px 0 48px rgba(0,0,0,0.35);
  visibility: hidden;
  opacity: 0;
  transform: translateX(110%);
  transition:
    transform 0.34s var(--ease-out),
    opacity 0.3s,
    visibility 0s linear 0.34s;
}

.site-index-panel[data-open] {
  visibility: visible;
  opacity: 1;
  transform: translateX(0);
  transition-delay: 0s;
}

.site-index-panel__inner {
  height: 100%;
  padding: 32px 28px;
  overflow-y: auto;
}

.site-index-panel__eyebrow {
  margin-bottom: 8px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--color-accent);
}

.site-index-panel__title {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 300;
  letter-spacing: 2px;
  color: var(--color-text);
}

.site-index-panel__list {
  margin: 24px 0 0;
  padding: 0;
}

.site-index-panel__list li {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.site-index-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 14px 4px;
  background: transparent;
  border: none;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  text-align: left;
  cursor: pointer;
  transition: color 0.25s, padding-left 0.25s;
}

.site-index-link:hover {
  color: var(--color-accent);
  padding-left: 10px;
}

.site-index-link__no {
  font-family: var(--font-number);
  font-size: 12px;
  color: var(--color-text-secondary);
}

.site-index-panel__empty {
  margin-top: 24px;
  color: var(--color-text-secondary);
  font-size: 14px;
}

.site-footer {
  position: relative;
  border-top: 1px solid var(--color-glass-border);
  background:
    radial-gradient(720px 320px at 92% 0%, rgba(157,78,221,0.16) 0, transparent 70%),
    radial-gradient(500px 260px at 20% 10%, rgba(245,197,24,0.06) 0, transparent 70%),
    var(--color-bg);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent) 0%, rgba(245,197,24,0.1) 30%, transparent 70%);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(260px, 2fr) minmax(140px, 1fr) minmax(140px, 1fr) minmax(200px, 1.3fr);
  gap: clamp(24px, 4vw, 48px);
  max-width: var(--container-width);
  margin-inline: auto;
  padding: clamp(36px, 6vw, 64px) clamp(20px, 4vw, 48px) 24px;
}

.site-footer__brand .site-brand {
  margin-bottom: 16px;
}

.site-footer__statement {
  max-width: 46ch;
  margin-top: 18px;
  padding-left: 14px;
  border-left: 2px solid var(--color-accent);
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.8;
}

.site-footer__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 6px 14px;
  border: 1px solid var(--color-glass-border);
  border-radius: 999px;
  background: var(--color-glass);
  color: var(--color-text-secondary);
  font-size: 12px;
}

.site-footer__badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent);
}

.site-footer__heading {
  margin: 0 0 18px;
  font-family: var(--font-index);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 4px;
  color: var(--color-accent);
}

.site-footer__nav ul,
.site-footer__legal ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.site-footer__nav a,
.site-footer__legal a {
  color: var(--color-text-secondary);
  font-size: 14px;
  transition: color 0.25s, padding-left 0.25s;
}

.site-footer__nav a:hover,
.site-footer__legal a:hover {
  color: var(--color-accent);
  padding-left: 6px;
}

.site-footer__contact {
  font-style: normal;
}

.site-footer__contact-item {
  margin: 0 0 6px;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.7;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  max-width: var(--container-width);
  margin-inline: auto;
  padding: 20px clamp(20px, 4vw, 48px) 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  color: var(--color-text-secondary);
  font-size: 13px;
  letter-spacing: 1px;
}

@media (max-width: 991px) {
  body {
    padding-top: var(--header-height-mobile);
    padding-left: 0;
  }

  .skip-link {
    left: 8px;
  }

  .site-header {
    width: 100%;
    height: var(--header-height-mobile);
    bottom: auto;
    flex-direction: row;
    align-items: center;
    padding: 0 16px;
    border-right: none;
    border-bottom: 1px solid var(--color-glass-border);
  }

  .site-header__glaze {
    background: linear-gradient(180deg, rgba(30,42,90,0.92) 0%, rgba(11,16,38,0.98) 100%);
  }

  .site-header__glaze::before,
  .site-header__glaze::after {
    display: none;
  }

  .site-brand {
    gap: 10px;
  }

  .site-brand__logo {
    width: 36px;
    height: 36px;
    font-size: 18px;
    box-shadow: 0 0 12px rgba(245,197,24,0.14);
  }

  .site-brand__name {
    font-size: 19px;
    letter-spacing: 4px;
  }

  .site-brand__tag {
    display: none;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height-mobile);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 50;
    margin: 0;
    padding: 32px clamp(20px, 6vw, 48px);
    border-top: 1px solid var(--color-glass-border);
    background: linear-gradient(180deg, rgba(11,16,38,0.98) 0%, rgba(6,9,20,0.995) 100%);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(calc(-100% - var(--header-height-mobile)));
    transition:
      transform 0.35s var(--ease-out),
      opacity 0.3s,
      visibility 0s linear 0.35s;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition-delay: 0s;
  }

  .site-nav__list {
    max-width: 720px;
  }

  .site-nav__item {
    margin-bottom: 4px;
  }

  .site-nav__link {
    padding: 14px 4px;
    border-left-width: 3px;
    border-radius: 0;
    font-size: 24px;
  }

  .site-nav__link::before {
    font-size: 12px;
  }

  .site-nav__note {
    display: none;
  }

  .site-header__controls {
    flex-direction: row;
    gap: 6px;
    margin-top: 0;
    margin-left: auto;
  }

  .site-control {
    padding: 9px;
    border-radius: 12px;
  }

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

  .site-nav-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    margin-left: 4px;
    border: 1px solid var(--color-glass-border);
    border-radius: 12px;
    color: var(--color-text);
    transition: color 0.25s, border-color 0.25s;
  }

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

  .site-nav-toggle__box {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .site-nav-toggle__bar {
    display: block;
    width: 16px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition: transform 0.3s, opacity 0.3s;
  }

  html[data-nav-open="true"] .site-nav-toggle__bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  html[data-nav-open="true"] .site-nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }

  html[data-nav-open="true"] .site-nav-toggle__bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .site-index-panel {
    top: var(--header-height-mobile);
    width: min(420px, 92vw);
  }

  .site-index-panel__inner {
    padding: 24px 20px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .site-footer__brand {
    grid-column: auto;
  }

  .site-footer__bottom {
    flex-direction: column;
  }

  .site-index-panel {
    width: 100%;
    border-left: none;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html.js [data-reveal],
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}