:root {
  --bg-deep: #0A0E27;
  --bg-panel: #11163D;
  --accent: #00FFA3;
  --accent-soft: #66FFCC;
  --white: #FFFFFF;
  --muted: #A0AAB8;
  --night: #05060F;
  --cyan: #00D1FF;
  --violet: #7B61FF;
  --warn: #FF7A45;
  --font-head: "Noto Sans SC", "Source Han 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: "Roboto Mono", "SF Mono", Consolas, "Liberation Mono", monospace;
  --radius: 18px;
  --radius-sm: 10px;
  --header-h: 76px;
  --content-w: 1280px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-deep);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

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

ul[class],
ol[class] {
  list-style: none;
  padding: 0;
  margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--white);
}

h1 {
  font-size: clamp(2.5rem, 7vw, 4.25rem);
}

h2 {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
}

h3 {
  font-size: clamp(1.3rem, 2.8vw, 1.75rem);
}

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

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

button {
  font-family: inherit;
  border: 0;
}

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

[hidden] {
  display: none !important;
}

#main-content {
  scroll-margin-top: calc(var(--header-h) + 12px);
}

#main-content:focus {
  outline: none;
}

.container {
  max-width: var(--content-w);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 40px);
}

.section {
  padding-block: clamp(72px, 10vw, 120px);
  position: relative;
}

.section--tight {
  padding-block: clamp(48px, 7vw, 72px);
}

.content {
  max-width: 72ch;
}

.content a:not([class]) {
  color: var(--cyan);
  border-bottom: 1px solid rgba(0, 209, 255, .42);
  padding-bottom: 2px;
  transition: color .25s;
}

.content a:not([class]):hover {
  color: var(--accent-soft);
  border-color: var(--accent);
}

.grid {
  display: grid;
  gap: clamp(16px, 3vw, 28px);
}

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

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 32px);
  border: 1px solid rgba(0, 255, 163, .12);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(17, 22, 61, .82), rgba(10, 14, 39, .74));
  box-shadow: 0 12px 40px rgba(0, 0, 0, .25);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color .3s var(--ease), transform .3s var(--ease), box-shadow .3s var(--ease);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--cyan), transparent);
  opacity: .8;
}

.card:hover {
  border-color: rgba(0, 255, 163, .35);
  transform: translateY(-2px);
  box-shadow: 0 18px 50px rgba(0, 0, 0, .35);
}

.stat-card {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid rgba(0, 255, 163, .14);
  border-radius: var(--radius);
  background: rgba(17, 22, 61, .72);
  box-shadow: 0 12px 32px rgba(0, 0, 0, .25);
}

.stat-card::after {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -45%;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, rgba(0, 255, 163, .18), transparent 70%);
  pointer-events: none;
}

.stat-card__value {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--accent);
  line-height: 1.15;
}

.stat-card__label {
  margin-top: 8px;
  font-size: .95rem;
  color: var(--muted);
}

.section-head {
  margin-bottom: 48px;
}

.section-head__index {
  display: block;
  font-family: var(--font-mono);
  font-size: .95rem;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 10px;
  text-transform: uppercase;
}

.section-head__title {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 12px;
}

.section-head__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 255, 163, .55), transparent);
}

.section-head__lead {
  max-width: 64ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.page-hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 100vh;
  padding: calc(var(--header-h) + 64px) clamp(20px, 4vw, 40px) 72px;
  overflow: hidden;
}

.page-hero--compact {
  min-height: 72vh;
  align-items: flex-end;
  padding-top: calc(var(--header-h) + 56px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .18em;
  color: var(--accent);
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.label-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid rgba(0, 255, 163, .3);
  border-radius: 999px;
  background: rgba(17, 22, 61, .6);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  white-space: nowrap;
}

.label-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  font-size: .9rem;
  color: var(--muted);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(160, 170, 184, .45);
}

.breadcrumb a {
  color: var(--muted);
  transition: color .25s;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  color: var(--night);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 8px 30px rgba(0, 255, 163, .18);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), filter .3s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(0, 255, 163, .28);
  filter: saturate(1.1);
}

.btn--ghost {
  background: transparent;
  border: 1px solid rgba(0, 255, 163, .4);
  color: var(--white);
  box-shadow: none;
}

.btn--ghost:hover {
  background: rgba(0, 255, 163, .08);
  border-color: var(--accent);
  color: var(--accent);
}

.skip-link {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 300;
  display: inline-block;
  padding: 10px 18px;
  background: var(--accent);
  color: var(--night);
  font-weight: 700;
  border-radius: 999px;
  transform: translateY(-160%);
  transition: transform .25s var(--ease);
}

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

.site-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 220;
  width: 100%;
  height: 3px;
  pointer-events: none;
  background: rgba(0, 0, 0, 0);
}

.site-progress__inner {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  box-shadow: 0 0 14px rgba(0, 255, 163, .9);
  transition: width .08s linear;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 150;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease), backdrop-filter .4s var(--ease);
}

.site-header[data-scrolled] {
  background: rgba(5, 6, 15, .78);
  border-bottom-color: rgba(0, 255, 163, .18);
  box-shadow: 0 8px 32px rgba(0, 0, 0, .45);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.site-header__inner {
  position: relative;
  max-width: var(--content-w);
  height: var(--header-h);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 40px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.3rem;
  letter-spacing: .04em;
  color: var(--white);
  line-height: 1;
  transition: color .25s;
}

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

.brand--footer {
  font-size: 1.55rem;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  color: var(--night);
  transform: skewX(-8deg);
  box-shadow: 0 0 24px rgba(0, 255, 163, .35);
}

.brand__mark-inner {
  display: block;
  transform: skewX(8deg);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--night);
}

.brand__text {
  position: relative;
  display: inline-block;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: rgba(17, 22, 61, .75);
  border: 1px solid rgba(0, 255, 163, .4);
  border-radius: 999px;
  color: var(--white);
  font-size: .9rem;
  font-weight: 700;
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color .25s, background .25s;
}

.nav-toggle:hover {
  background: rgba(17, 22, 61, .9);
  border-color: var(--accent);
}

.nav-toggle__line {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: background .25s;
}

.nav-toggle__line::before,
.nav-toggle__line::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform .3s var(--ease);
}

.nav-toggle__line::before {
  top: -6px;
}

.nav-toggle__line::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line::after {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-toggle__label {
  letter-spacing: .08em;
}

.site-nav {
  position: absolute;
  top: calc(100% + 10px);
  left: 16px;
  right: 16px;
  padding: 12px;
  background: rgba(5, 6, 15, .94);
  border: 1px solid rgba(0, 255, 163, .18);
  border-radius: 22px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .55);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px) scale(.98);
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s var(--ease);
  pointer-events: none;
}

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

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

.site-nav__link {
  display: block;
  position: relative;
  padding: 13px 16px;
  border-radius: 14px;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: .03em;
  color: rgba(255, 255, 255, .82);
  transition: color .25s, background .25s;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 8px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--accent);
  background: rgba(0, 255, 163, .06);
}

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

.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--night);
  color: var(--muted);
  border-top: 1px solid rgba(0, 255, 163, .14);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(0, 255, 163, .04) 1px, transparent 1px),
    linear-gradient(120deg, rgba(0, 209, 255, .04) 1px, transparent 1px);
  background-size: 64px 64px, 96px 96px;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 30%, #000);
  mask-image: linear-gradient(to bottom, transparent, #000 30%, #000);
}

.site-footer__inner {
  position: relative;
  z-index: 1;
  max-width: var(--content-w);
  margin-inline: auto;
  padding: 64px clamp(20px, 4vw, 40px) 28px;
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr;
  gap: 48px;
}

.site-footer__brand .brand {
  color: var(--white);
}

.site-footer__brand .brand:hover {
  color: var(--accent);
}

.site-footer__slogan {
  max-width: 36em;
  margin-top: 18px;
  color: var(--muted);
  font-size: .98rem;
  line-height: 1.8;
}

.site-footer__heading {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-size: 1rem;
  letter-spacing: .12em;
  color: var(--white);
}

.site-footer__heading::before {
  content: "";
  width: 20px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  border-radius: 2px;
}

.site-footer__links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 24px;
}

.site-footer__links a {
  position: relative;
  display: inline-block;
  padding: 4px 0;
  color: rgba(255, 255, 255, .78);
  font-size: .96rem;
  transition: color .25s, transform .25s var(--ease);
}

.site-footer__links a::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}

.site-footer__links a:hover {
  color: var(--accent);
  transform: translateX(4px);
}

.site-footer__links a:hover::before {
  transform: scaleX(1);
}

.site-footer__contact-list {
  display: grid;
  gap: 12px;
}

.site-footer__contact-list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.site-footer__contact-label {
  flex: 0 0 48px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: .86rem;
}

.site-footer__note {
  margin-top: 20px;
  padding-left: 14px;
  border-left: 2px solid rgba(0, 255, 163, .6);
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.7;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(160, 170, 184, .16);
}

.site-footer__copyright {
  font-size: .9rem;
  color: var(--muted);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.site-footer__legal a {
  padding: 4px 0;
  color: rgba(255, 255, 255, .75);
  font-size: .9rem;
  transition: color .25s;
}

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

.site-footer__icp {
  font-family: var(--font-mono);
  font-size: .84rem;
  color: rgba(160, 170, 184, .75);
}

.media-frame {
  --media-ratio: 16 / 9;
  position: relative;
  aspect-ratio: var(--media-ratio);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .08);
  background:
    radial-gradient(circle at 20% 15%, rgba(0, 255, 163, .18), transparent 32%),
    radial-gradient(circle at 80% 60%, rgba(0, 209, 255, .12), transparent 42%),
    linear-gradient(135deg, rgba(17, 22, 61, .92), rgba(5, 6, 15, .84));
  box-shadow: inset 0 0 60px rgba(0, 0, 0, .35);
}

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

.media-frame--ratio-21-10 {
  --media-ratio: 21 / 10;
}

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

.media-frame[data-label]::after {
  content: attr(data-label);
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 6px 10px;
  border: 1px solid rgba(0, 255, 163, .2);
  border-radius: 999px;
  background: rgba(5, 6, 15, .55);
  color: rgba(255, 255, 255, .7);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.tabs {
  margin: 28px 0;
}

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0 0 18px;
  border-bottom: 1px solid rgba(0, 255, 163, .14);
}

.tabs__button {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 1px solid rgba(160, 170, 184, .2);
  border-bottom: 0;
  border-radius: 12px 12px 0 0;
  color: var(--muted);
  padding: 12px 18px;
  font-size: .95rem;
  font-weight: 700;
  cursor: pointer;
  transition: color .25s, background .25s, border-color .25s;
}

.tabs__button:hover {
  color: var(--white);
  background: rgba(17, 22, 61, .7);
}

.tabs__button[aria-selected="true"] {
  color: var(--night);
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  border-color: transparent;
}

.tabs__panel {
  animation: fadeIn .3s var(--ease);
}

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

@media (max-width: 960px) {
  :root {
    --header-h: 64px;
  }

  .site-header__inner {
    height: var(--header-h);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: block;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 961px) {
  .site-nav {
    position: static;
    top: auto;
    left: auto;
    right: auto;
    width: auto;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .site-nav__list {
    flex-direction: row;
    align-items: center;
    gap: 2px;
  }

  .site-nav__link {
    padding: 10px 14px;
    border-radius: 999px;
    background: transparent;
  }

  .site-nav__link::after {
    left: 14px;
    right: 14px;
    bottom: 6px;
  }

  .site-nav__link:hover,
  .site-nav__link[aria-current="page"] {
    background: rgba(0, 255, 163, .08);
  }
}

@media (max-width: 640px) {
  .site-footer__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-footer__legal {
    flex-direction: column;
    gap: 8px;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .page-hero,
  .page-hero--compact {
    padding-left: 20px;
    padding-right: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

  .site-progress__inner {
    transition: none;
  }

  .cards-grid .card,
  .card {
    transform: none !important;
  }
}