:root {
  --color-primary: #0A0F2E;
  --color-surface: #151B3C;
  --color-glass: rgba(255,255,255,0.08);
  --color-gold: #F5C518;
  --color-purple: #9D4EDD;
  --color-cyan: #00F0FF;
  --color-text: #E8EAF6;
  --color-text-secondary: #A0A6C8;
  --color-border: rgba(255,255,255,0.15);
  --color-success: #00E676;
  --gradient-main: linear-gradient(135deg, #0A0F2E 0%, #151B3C 50%, #0A0F2E 100%);
  --font-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
  --font-en: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", Consolas, "Menlo", monospace;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --container-width: 1280px;
  --header-height: 72px;
  --gap: 28px;
}

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

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

body {
  margin: 0;
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--gradient-main);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(760px 400px at 85% -5%, rgba(157,78,221,0.18), transparent 65%),
    radial-gradient(560px 340px at 5% 108%, rgba(0,240,255,0.10), transparent 65%),
    radial-gradient(420px 260px at 50% 40%, rgba(245,197,24,0.05), transparent 70%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(90% 70% at 50% 0%, #000 0%, transparent 100%);
  mask-image: radial-gradient(90% 70% at 50% 0%, #000 0%, transparent 100%);
}

h1, h2, h3, h4, h5 {
  margin: 0 0 0.55em;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

p {
  margin: 0 0 1em;
}

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

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

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.4em;
}

[hidden] {
  display: none !important;
}

::selection {
  background: rgba(245,197,24,0.25);
  color: var(--color-text);
}

main {
  display: block;
  position: relative;
  z-index: 1;
}

main:focus {
  outline: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 32px;
  padding-right: 32px;
}

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

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 200;
  background: var(--color-gold);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 14px;
  padding: 10px 18px;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(245,197,24,0.35);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
  outline: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  font-family: var(--font-cn);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  padding: 14px 22px;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-gold) 0%, #ffd75e 100%);
  color: var(--color-primary);
  box-shadow: 0 4px 24px rgba(245,197,24,0.30);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 36px rgba(245,197,24,0.45);
}

.btn--glass {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.btn--glass:hover {
  border-color: rgba(255,255,255,0.35);
  background: rgba(255,255,255,0.10);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 9px 16px;
  font-size: 14px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: background 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease;
}

.site-header.is-scrolled {
  background: rgba(10, 15, 46, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: var(--header-height);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--color-text);
}

.site-header__brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--color-text);
}

.site-header__brand-mark::before {
  content: "";
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-purple) 100%);
  box-shadow: 0 0 18px rgba(245,197,24,0.30);
  transform: rotate(10deg);
  flex-shrink: 0;
}

.site-header__brand-sub {
  display: block;
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  border-left: 1px solid var(--color-border);
  padding-left: 10px;
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__item {
  margin: 0;
  padding: 0;
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 12px 14px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  transition: color 0.25s ease;
}

.site-nav__link::before {
  content: attr(data-index);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  color: var(--color-purple);
  letter-spacing: 0.05em;
  vertical-align: 3px;
  margin-right: 5px;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-purple));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-text);
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.site-header__progress {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  z-index: 2;
  transform: scaleX(var(--scroll-progress, 0));
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--color-gold), var(--color-purple), var(--color-cyan));
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.site-header.is-scrolled .site-header__progress {
  opacity: 1;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 42px;
  height: 42px;
  padding: 10px;
  gap: 5px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  position: relative;
  z-index: 1;
  background: #070B20;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 64px;
  margin-top: 88px;
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 48px;
  padding-bottom: 56px;
}

.site-footer__brand {
  max-width: 32em;
}

.site-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 26px;
  font-weight: 900;
  color: var(--color-text);
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.site-footer__logo::before {
  content: "";
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-purple));
  transform: rotate(12deg);
  box-shadow: 0 0 18px rgba(245,197,24,0.3);
  flex-shrink: 0;
}

.site-footer__slogan {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin: 0 0 18px;
}

.site-footer__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.site-footer__col {
  min-width: 0;
}

.site-footer__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: 18px;
}

.site-footer__title::before {
  content: "";
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-purple));
  flex-shrink: 0;
}

.site-footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
}

.site-footer__list a {
  color: var(--color-text-secondary);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.site-footer__list a:hover {
  color: var(--color-gold);
  padding-left: 6px;
}

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

.site-footer__contact li {
  border-bottom: 1px dashed rgba(255,255,255,0.08);
  padding: 6px 0;
}

.site-footer__contact li:last-child {
  border-bottom: none;
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 22px;
  padding-bottom: 22px;
  border-top: 1px solid rgba(255,255,255,0.08);
  color: var(--color-text-secondary);
  font-size: 13px;
}

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

.glass-panel {
  background: var(--color-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--gap);
}

.data-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--color-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.data-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-purple), transparent 80%);
  opacity: 0.6;
  pointer-events: none;
}

.data-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,240,255,0.35);
  box-shadow: 0 18px 44px rgba(0,0,0,0.35);
}

.data-card__num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--color-purple);
}

.data-card__tag {
  align-self: flex-start;
}

.data-card__title {
  font-size: 20px;
  font-weight: 900;
  margin: 0;
  line-height: 1.3;
}

.data-card__desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
  flex: 1 1 auto;
}

.data-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 13px;
  color: var(--color-text-secondary);
}

.data-index {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border);
}

.data-index__item {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 24px 16px;
  border-bottom: 1px solid var(--color-border);
  transition: background 0.25s ease, padding-left 0.25s ease;
}

.data-index__item:hover {
  background: rgba(255,255,255,0.04);
  padding-left: 24px;
}

.data-index__num {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.05em;
  color: var(--color-purple);
}

.data-index__title {
  font-size: 20px;
  font-weight: 900;
  margin: 0 0 4px;
}

.data-index__desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
}

.data-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-gold);
  white-space: nowrap;
}

.data-index__link::after {
  content: "→";
  transition: transform 0.25s ease;
}

.data-index__item:hover .data-index__link::after {
  transform: translateX(4px);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 1px solid;
  background: rgba(255,255,255,0.03);
}

.tag--gold {
  color: var(--color-gold);
  border-color: rgba(245,197,24,0.45);
}

.tag--purple {
  color: #c08aff;
  border-color: rgba(157,78,221,0.5);
}

.tag--cyan {
  color: var(--color-cyan);
  border-color: rgba(0,240,255,0.4);
}

.section-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.section-head__num {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--color-purple);
}

.section-head__title {
  font-size: clamp(28px, 4vw, 44px);
  margin: 0;
  line-height: 1.15;
}

.section-head__sub {
  margin-left: auto;
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-purple);
  opacity: 0.7;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

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

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

.tabs-nav {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  margin-bottom: 32px;
  scrollbar-width: none;
}

.tabs-nav::-webkit-scrollbar {
  display: none;
}

.tabs-nav__btn {
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  font-family: var(--font-cn);
  font-size: 15px;
  font-weight: 700;
  padding: 14px 18px;
  cursor: pointer;
  position: relative;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.tabs-nav__btn:hover {
  color: var(--color-text);
}

.tabs-nav__btn[aria-selected="true"] {
  color: var(--color-gold);
}

.tabs-nav__btn[aria-selected="true"]::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: -1px;
  height: 2px;
  background: var(--color-gold);
  border-radius: 2px;
}

.tab-panel {
  animation: tab-reveal 0.35s ease;
}

@keyframes tab-reveal {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background:
    radial-gradient(90% 70% at 15% 15%, rgba(157,78,221,0.22), transparent 60%),
    radial-gradient(70% 60% at 85% 90%, rgba(0,240,255,0.12), transparent 60%),
    linear-gradient(135deg, rgba(255,255,255,0.06), rgba(255,255,255,0.01));
}

.media::before {
  content: "";
  display: block;
  padding-top: 62%;
}

.media--wide::before {
  padding-top: 46%;
}

.media--tall::before {
  padding-top: 78%;
}

.media img,
.media svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.beam {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), var(--color-purple), var(--color-cyan), transparent);
  opacity: 0.45;
  pointer-events: none;
}

.beam--vertical {
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, transparent, var(--color-purple), var(--color-cyan), transparent);
}

.layout-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gap);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}

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

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

@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;
  }

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

  .tab-panel {
    animation: none;
  }
}

@media (max-width: 1080px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-header__inner {
    min-height: 64px;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    background: rgba(10, 15, 46, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--color-border);
    padding: 24px 32px 28px;
    box-shadow: 0 24px 48px rgba(0,0,0,0.4);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    display: block;
    padding: 12px 8px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__link::before {
    margin-right: 8px;
  }
}

@media (max-width: 960px) {
  .site-footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .site-footer {
    padding-top: 48px;
    margin-top: 64px;
  }

  .site-footer__top {
    padding-bottom: 40px;
  }
}

@media (max-width: 640px) {
  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .site-footer__bottom {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .data-grid {
    grid-template-columns: 1fr;
  }

  .data-index__item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 16px;
  }

  .data-index__link {
    grid-column: 2;
  }

  .section-head__sub {
    margin-left: 0;
    width: 100%;
  }

  .layout-grid {
    gap: 20px;
  }
}

@media (max-width: 480px) {
  .site-header__brand-sub {
    display: none;
  }

  .site-header__actions {
    gap: 8px;
  }

  .btn--sm {
    padding: 7px 12px;
    font-size: 13px;
  }

  .site-nav {
    padding-left: 20px;
    padding-right: 20px;
  }
}