:root {
  --color-primary-bg: #0B1026;
  --color-secondary-bg: #050A18;
  --color-surface: #11203F;
  --color-surface-highlight: #16284A;
  --color-surface-glass: rgba(17, 32, 63, 0.78);
  --color-surface-glass-strong: rgba(17, 32, 63, 0.94);
  --color-secondary-glass: rgba(5, 10, 24, 0.86);
  --color-text-primary: #E8ECF4;
  --color-text-secondary: #8C98B0;
  --color-accent: #00E5A8;
  --color-accent-alt: #00B8D9;
  --color-divider: #1E2B45;
  --color-success: #00E096;
  --color-warning: #FFB020;
  --color-error: #FF4D6A;
  --font-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --font-display: "Space Grotesk", "Arial Narrow", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
  --content-max: 1440px;
  --header-height: 72px;
  --nav-width: 208px;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-card: 0 14px 32px rgba(0, 0, 0, 0.30);
}

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

[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  min-width: 20rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text-primary);
  background-color: var(--color-primary-bg);
  background-image:
    radial-gradient(ellipse 55% 35% at 88% 8%, rgba(0, 184, 217, 0.07), transparent 70%),
    radial-gradient(ellipse 45% 30% at 8% 92%, rgba(0, 229, 168, 0.06), transparent 70%);
}

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

h1, h2, h3, h4, h5, h6, p, ul, ol, dl, figure, blockquote {
  margin-top: 0;
}

h1, h2, h3, h4 {
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

::selection {
  background: var(--color-accent);
  color: #04101A;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-primary-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-divider);
  border-radius: 5px;
  border: 2px solid var(--color-primary-bg);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-surface-highlight);
}

#main-content {
  scroll-margin-top: calc(var(--header-height) + 1rem);
}

.site-main {
  display: block;
  min-height: 60vh;
}

.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2rem);
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 1rem;
  z-index: 300;
  padding: 0.65rem 1.1rem;
  background: var(--color-accent);
  color: #04101A;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transform: translateY(calc(-100% - 1.5rem));
  transition: transform 0.2s ease;
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 220;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-alt));
  box-shadow: 0 0 10px rgba(0, 229, 168, 0.45);
  pointer-events: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-secondary-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-accent) 0 2rem, var(--color-divider) 2rem);
}

.header-frame {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  height: var(--header-height);
  padding-inline: clamp(1rem, 3vw, 2rem);
}

.brand {
  flex: 0 0 auto;
}

.brand__link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-primary);
}

.brand__link:hover,
.brand__link:focus {
  color: var(--color-text-primary);
  text-decoration: none;
}

.brand__symbol {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-alt) 100%);
  color: #04101A;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.2rem;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 0.6rem), calc(100% - 0.6rem) 100%, 0 100%);
}

.brand__names {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
  line-height: 1.05;
}

.brand__en {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
}

.brand__zh {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.32em;
}

.header-search {
  flex: 1 1 auto;
  max-width: 30rem;
  margin-left: auto;
}

.header-search__label {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.header-search__box {
  position: relative;
}

.header-search__icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  width: 1rem;
  height: 1rem;
  transform: translateY(-50%);
  pointer-events: none;
}

.header-search__icon::before {
  content: "";
  position: absolute;
  width: 0.6rem;
  height: 0.6rem;
  top: 0.08rem;
  left: 0.05rem;
  border: 1.5px solid var(--color-text-secondary);
  border-radius: 50%;
}

.header-search__icon::after {
  content: "";
  position: absolute;
  width: 0.42rem;
  height: 1.5px;
  left: 0.6rem;
  top: 0.68rem;
  background: var(--color-text-secondary);
  transform: rotate(45deg);
}

.header-search__input {
  width: 100%;
  padding: 0.55rem 0.875rem 0.55rem 2.25rem;
  background: rgba(5, 10, 24, 0.55);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.header-search__input::placeholder {
  color: var(--color-text-secondary);
}

.header-search__input:hover {
  background: rgba(5, 10, 24, 0.8);
}

.header-search__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 229, 168, 0.14);
  background: rgba(5, 10, 24, 0.85);
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 3px rgba(0, 224, 150, 0.16), 0 0 12px rgba(0, 224, 150, 0.4);
  animation: status-pulse 2.4s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.site-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  z-index: 90;
  width: var(--nav-width);
  height: calc(100vh - var(--header-height));
  background: var(--color-secondary-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-right: 1px solid var(--color-divider);
  overflow-y: auto;
}

.site-nav:focus {
  outline: none;
}

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 1.5rem 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.site-nav__item {
  margin: 0;
}

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.8rem 1.25rem 0.8rem 1.5rem;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  border-left: 2px solid transparent;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.site-nav__link:hover {
  color: var(--color-text-primary);
  background: rgba(17, 32, 63, 0.45);
  text-decoration: none;
}

.site-nav__link[aria-current="page"] {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
  background: linear-gradient(90deg, rgba(0, 229, 168, 0.08), transparent 70%);
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  line-height: 1;
}

.site-nav__link[aria-current="page"] .site-nav__index {
  color: var(--color-accent);
}

.site-nav__label {
  line-height: 1.1;
}

.nav-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 130;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.7rem;
  flex-direction: column;
  justify-content: center;
  gap: 0.3rem;
  background: var(--color-surface-glass-strong);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: var(--shadow-card);
}

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

.nav-toggle__line {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-accent);
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: translateY(0.42rem) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: translateY(-0.42rem) rotate(-45deg);
}

.nav-is-open {
  overflow: hidden;
}

.site-footer {
  background: var(--color-secondary-bg);
  border-top: 1px solid var(--color-divider);
  position: relative;
}

.site-footer__accent {
  position: absolute;
  top: -1px;
  left: 0;
  height: 3px;
  width: min(45%, 26rem);
  background: linear-gradient(90deg, var(--color-accent), rgba(0, 184, 217, 0.4), transparent);
}

.site-footer__inner {
  max-width: var(--content-max);
  margin-inline: auto;
  padding: clamp(2.5rem, 5vw, 4rem) clamp(1rem, 3vw, 2rem) 1.75rem;
}

.site-footer__grid {
  display: grid;
  gap: 2.25rem;
  grid-template-columns: 1fr;
}

.site-footer__heading {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 1.1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--color-divider);
}

.site-footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.site-footer__list a {
  color: var(--color-text-secondary);
  font-size: 0.925rem;
  transition: color 0.2s;
}

.site-footer__list a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.site-footer__statement {
  margin: 1.25rem 0 0;
  max-width: 22rem;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.75;
}

.site-footer__contact {
  gap: 1rem;
}

.site-footer__contact li {
  display: grid;
  gap: 0.15rem;
}

.site-footer__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--color-text-secondary);
}

.site-footer__value {
  color: var(--color-text-primary);
  font-size: 0.9rem;
  line-height: 1.55;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-divider);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.site-footer__copyright,
.site-footer__icp {
  margin: 0;
}

.section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.section__header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.section__title {
  margin: 0;
}

.exhibit-label {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--color-accent);
  text-transform: uppercase;
}

.exhibit-label::before {
  content: "";
  width: 2.25rem;
  height: 1px;
  background: var(--color-accent);
  flex: none;
}

.exhibit-caption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  border-left: 2px solid var(--color-divider);
  margin: 0;
  padding: 0.25rem 0 0.25rem 0.85rem;
  line-height: 1.6;
}

.layout-split {
  display: grid;
  gap: 1.5rem;
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
  gap: 1.25rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1.25rem;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.stack--lg {
  gap: 2rem;
}

.stack--xl {
  gap: 3rem;
}

.glass-panel {
  background: var(--color-surface-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.5vw, 2rem);
  box-shadow: var(--shadow-card);
}

.is-floating {
  box-shadow: 0 28px 64px -12px rgba(0, 0, 0, 0.5);
}

.data-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
  padding: 1.25rem;
  position: relative;
  transition: border-color 0.25s, background 0.25s, transform 0.25s, box-shadow 0.25s;
}

.data-card:hover {
  background: var(--color-surface-highlight);
  border-color: rgba(0, 229, 168, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
}

.data-card__metric {
  margin: 0 0 0.15rem;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-accent);
}

.data-card__label {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.data-card__note {
  margin: 0.75rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  text-decoration: none;
}

.btn--primary {
  background: var(--color-accent);
  color: #04101A;
}

.btn--primary:hover {
  background: #3BF0BE;
  color: #04101A;
  box-shadow: 0 8px 24px rgba(0, 229, 168, 0.25);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-divider);
  color: var(--color-text-primary);
}

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

.btn--sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
}

.breadcrumb {
  padding: 1.25rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-secondary);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--color-divider);
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.tabs {
  position: relative;
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0 0 1.5rem;
  padding: 0 0 0 0;
  border-bottom: 1px solid var(--color-divider);
}

.tab-button {
  appearance: none;
  padding: 0.65rem 1.1rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.tab-button:hover {
  color: var(--color-text-primary);
  background: rgba(17, 32, 63, 0.4);
}

.tab-button[aria-selected="true"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.tab-panel {
  padding-top: 0.25rem;
}

.tab-panel:not([hidden]) {
  animation: tab-in 0.3s ease both;
}

@keyframes tab-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(0, 184, 217, 0.1), transparent 55%),
    var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius);
}

.media-frame--tall {
  aspect-ratio: 3 / 4;
}

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

.media-frame__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--color-text-secondary);
  text-align: center;
  background-image: repeating-linear-gradient(
    -45deg,
    transparent 0 10px,
    rgba(255, 255, 255, 0.015) 10px 20px
  );
}

.diagonal-band {
  height: 4px;
  border: none;
  background: linear-gradient(105deg, var(--color-accent) 0%, var(--color-accent-alt) 55%, transparent 56%);
}

.text-mono {
  font-family: var(--font-mono);
}

.text-accent {
  color: var(--color-accent);
}

.text-secondary {
  color: var(--color-text-secondary);
}

.text-success {
  color: var(--color-success);
}

.text-warning {
  color: var(--color-warning);
}

.text-error {
  color: var(--color-error);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

[data-reveal][data-revealed="true"] {
  opacity: 1;
  transform: none;
}

@media (min-width: 1024px) {
  .site-main {
    padding-left: var(--nav-width);
  }

  .site-footer {
    margin-left: var(--nav-width);
  }

  .site-footer__grid {
    grid-template-columns: 1.5fr 0.9fr 0.9fr 1.2fr;
  }

  .header-frame {
    padding-left: 0;
  }

  .brand {
    width: var(--nav-width);
    align-self: stretch;
    display: flex;
    align-items: center;
    padding-left: clamp(1rem, 3vw, 1.75rem);
    margin-right: 1.5rem;
    border-right: 1px solid var(--color-divider);
  }

  .layout-split {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 2rem;
  }

  .layout-split--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  }

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

@media (max-width: 1023px) {
  :root {
    --header-height: 64px;
  }

  .site-header {
    position: relative;
  }

  .header-frame {
    padding-right: 4.75rem;
  }

  .header-status__text {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    top: 0;
    width: min(80vw, 20rem);
    height: 100vh;
    height: 100dvh;
    z-index: 120;
    padding: 4.5rem 0 2rem;
    transform: translateX(-102%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0s linear 0.3s;
    box-shadow: none;
  }

  .site-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
    box-shadow: 0 0 0 100vmax rgba(0, 0, 0, 0.55);
    transition: transform 0.3s ease, visibility 0s linear 0s;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .site-footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }

  .site-footer__col:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .header-search,
  .header-status {
    display: 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;
  }

  .status-dot {
    animation: none;
  }

  .scroll-progress {
    display: none;
  }

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