:root {
  --bg-deep: #0D1220;
  --bg-panel: #151D2E;
  --neon: #00FF9C;
  --blue: #00D4FF;
  --text: #F0F4FF;
  --text-2: #A0B0C8;
  --line: #2A3A4E;
  --red: #FF3B30;
  --font-display: "Anton", "Impact", "Arial Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --silk: linear-gradient(135deg, #E84855 0%, #F4A259 22%, #4EA699 44%, #2E86C1 66%, #8E6C95 100%);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --radius: 2px;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  letter-spacing: 0.01em;
}

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

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

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

button {
  font-family: inherit;
  font-size: inherit;
}

p,
ul,
ol,
dl,
blockquote,
figure {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 0.95;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

h1 {
  font-size: clamp(3rem, 8vw, 6rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.1rem;
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
}

.container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.section {
  position: relative;
  padding-block: clamp(3rem, 7vw, 6rem);
}

.section-head {
  max-width: 860px;
  margin-bottom: 2rem;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  color: var(--neon);
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.lead {
  max-width: 70ch;
  color: var(--text-2);
  font-size: 1.125rem;
}

.data-number {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  line-height: 1;
  color: var(--neon);
  letter-spacing: -0.02em;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 1300;
  background: var(--neon);
  color: #07110C;
  padding: 0.85rem 1.4rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: relative;
  z-index: 500;
  background: rgba(13, 18, 32, 0.97);
  border-bottom: 1px solid var(--line);
}

.header-shell {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 1rem;
  padding-block: 1.25rem 1rem;
}

.masthead-meta {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.masthead-meta::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 0.55rem;
  background: var(--neon);
  box-shadow: 0 0 12px rgba(0, 255, 156, 0.7);
  animation: pulse 2s ease-in-out infinite;
}

.masthead-action {
  display: flex;
  justify-content: flex-end;
  white-space: nowrap;
}

.brand-logo {
  display: inline-grid;
  justify-items: center;
  gap: 0.2rem;
  color: var(--text);
  line-height: 1;
}

.brand-cn {
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 5.4vw, 4rem);
  line-height: 0.95;
  letter-spacing: 0.12em;
  color: var(--text);
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.brand-en {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.46em;
  padding-left: 0.46em;
  color: var(--neon);
  text-transform: uppercase;
}

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

.brand-logo:hover .brand-cn {
  color: var(--neon);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 1200;
  pointer-events: none;
}

.scroll-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--neon), var(--blue));
  box-shadow: 0 0 8px rgba(0, 255, 156, 0.55);
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: clamp(0.75rem, 2.6vw, 2.5rem);
  border-block: 1px solid var(--line);
  background: rgba(21, 29, 46, 0.7);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.8rem 0.1rem;
  color: var(--text-2);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  background: var(--neon);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.22s ease;
}

.nav-link:hover {
  color: var(--text);
}

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

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-toggle {
  display: none;
  appearance: none;
  position: absolute;
  top: 1.05rem;
  left: 1rem;
  z-index: 30;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  transition: transform 0.22s ease, opacity 0.22s 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);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  line-height: 1;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--neon);
  color: #07110C;
  transform: skewX(-10deg);
  box-shadow: 0 8px 24px rgba(0, 255, 156, 0.22);
}

.btn-primary::after {
  content: "↗";
  margin-left: 0.5rem;
}

.btn-primary:hover {
  background: #B5FFDE;
  color: #07110C;
  transform: skewX(-10deg) translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 255, 156, 0.3);
}

.btn-secondary {
  background: transparent;
  border-color: var(--blue);
  color: var(--blue);
}

.btn-secondary:hover {
  background: rgba(0, 212, 255, 0.08);
  color: var(--text);
  border-color: var(--blue);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text-2);
}

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

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.75rem;
}

.grid {
  display: grid;
  gap: 1.25rem;
}

.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));
}

.panel,
.card {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 2rem;
  background: var(--blue);
}

.card:hover {
  border-color: rgba(0, 255, 156, 0.4);
}

.card-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.card-text {
  color: var(--text-2);
  font-size: 0.9rem;
  margin-bottom: 0;
}

.stat {
  display: grid;
  gap: 0.25rem;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-2);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--blue);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--blue);
  background: rgba(0, 212, 255, 0.06);
}

.tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.tag-warning {
  border-color: var(--red);
  color: var(--red);
  background: rgba(255, 59, 48, 0.08);
}

.tag-solid {
  background: var(--neon);
  border-color: var(--neon);
  color: #07110C;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  padding-block: 1rem 0;
  font-size: 0.8rem;
  color: var(--text-2);
}

.breadcrumb a {
  color: var(--text-2);
}

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

.breadcrumb-sep {
  color: var(--line);
}

.breadcrumb [aria-current="page"] {
  color: var(--text);
  font-weight: 700;
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(circle at 75% 20%, rgba(0, 212, 255, 0.12), transparent 50%),
    linear-gradient(145deg, var(--bg-panel), var(--bg-deep));
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.media-frame[data-ratio="4/3"] {
  aspect-ratio: 4 / 3;
}

.media-frame[data-ratio="21/9"] {
  aspect-ratio: 21 / 9;
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(0, 255, 156, 0.05) 45%, transparent 55%);
  pointer-events: none;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.media-frame:hover img {
  transform: scale(1.02);
}

.media-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.75rem 1rem;
  background: linear-gradient(transparent, rgba(13, 18, 32, 0.85));
  font-size: 0.8rem;
  color: var(--text-2);
  margin: 0;
}

.silk-line {
  display: block;
  height: 3px;
  width: 100%;
  border: 0;
  background: var(--silk);
  opacity: 0.9;
  margin-block: 2rem;
}

.tabs {
  margin-bottom: 1.5rem;
}

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

.tab {
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 0.85rem 1.25rem;
  color: var(--text-2);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  margin-bottom: -1px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

.tab[aria-selected="true"],
.tab.is-active {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.tab-panel {
  animation: tabIn 0.3s ease both;
}

@keyframes tabIn {
  from {
    opacity: 0;
    transform: translateX(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th,
.data-table td {
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-2);
}

.data-table td.num {
  font-family: var(--font-mono);
  color: var(--neon);
}

.data-table tr:hover td {
  background: rgba(0, 255, 156, 0.04);
}

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

.footer-silk {
  height: 3px;
  background: var(--silk);
}

.footer-shell {
  padding-block: 3rem 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}

.footer-branding {
  min-width: 0;
}

.footer-brand {
  display: grid;
  gap: 0.3rem;
  color: var(--text);
}

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

.footer-brand-cn {
  font-family: var(--font-display);
  font-size: 2.2rem;
  letter-spacing: 0.15em;
  color: var(--text);
}

.footer-brand-en {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--neon);
}

.footer-trust {
  max-width: 44ch;
  margin: 1rem 0 0;
  color: var(--text-2);
  font-size: 0.85rem;
  line-height: 1.7;
}

.footer-nav,
.footer-contact {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}

.footer-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.footer-nav a,
.footer-contact-link {
  color: var(--text-2);
  font-size: 0.9rem;
  text-decoration: none;
}

.footer-nav a:hover,
.footer-contact-link:hover {
  color: var(--neon);
}

.footer-contact-item {
  display: block;
  color: var(--text-2);
  font-size: 0.9rem;
}

.footer-address {
  margin: 0;
  color: var(--text-2);
  font-size: 0.85rem;
  font-style: normal;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  padding-top: 1.25rem;
  font-size: 0.8rem;
  color: var(--text-2);
}

.footer-legal-link {
  color: var(--text-2);
  text-decoration: none;
}

.footer-legal-link:hover {
  color: var(--neon);
}

.back-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 900;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1rem;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.back-to-top[data-visible="true"],
.back-to-top:focus-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--neon);
  border-color: var(--neon);
  color: #07110C;
}

.back-to-top-icon {
  line-height: 1;
}

.back-to-top-label {
  line-height: 1;
}

html.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(1rem);
  transition:
    opacity 0.5s ease var(--reveal-delay, 0s),
    transform 0.5s ease var(--reveal-delay, 0s);
}

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

[data-reveal-delay="1"] {
  --reveal-delay: 0.08s;
}

[data-reveal-delay="2"] {
  --reveal-delay: 0.16s;
}

[data-reveal-delay="3"] {
  --reveal-delay: 0.24s;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.45;
    transform: scale(0.8);
  }
}

@media (max-width: 960px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

@media (max-width: 860px) {
  .site-header {
    position: sticky;
    top: 0;
  }

  .masthead {
    grid-template-columns: 1fr auto 1fr;
    padding-block: 0.9rem 0.75rem;
  }

  .masthead-meta {
    display: none;
  }

  .brand-cn {
    font-size: 1.9rem;
  }

  .brand-en {
    font-size: 0.52rem;
    letter-spacing: 0.3em;
    padding-left: 0.3em;
  }

  .masthead-action {
    grid-column: 3;
  }

  .masthead-action .btn {
    padding: 0.6rem 1.1rem;
    font-size: 0.75rem;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 0;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-6px);
    overflow: hidden;
    background: rgba(13, 18, 32, 0.98);
    border-block: 0;
    transition: opacity 0.24s ease, transform 0.24s ease, visibility 0.24s ease, max-height 0.24s ease;
  }

  .site-nav[data-open] {
    max-height: calc(100vh - 4.5rem);
    max-height: calc(100dvh - 4.5rem);
    visibility: visible;
    opacity: 1;
    transform: none;
    overflow-y: auto;
    border-bottom: 1px solid var(--line);
  }

  .nav-link {
    padding: 1rem 1.25rem;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--line);
  }

  .nav-link:last-child {
    border-bottom: 0;
  }

  .nav-link::after {
    display: none;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-branding {
    grid-column: auto;
  }

  .footer-legal {
    align-items: flex-start;
  }

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

  .header-shell {
    padding-inline: 0.75rem;
  }

  .back-to-top {
    right: 0.75rem;
    bottom: 0.75rem;
  }
}

@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;
  }

  .masthead-meta::before {
    animation: none;
  }

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