:root {
  --space-blue: #0A1E3C;
  --neon: #39FF14;
  --voltage: #FF6A00;
  --teal: #0F4C5C;
  --wine: #722F37;
  --indigo: #3D348B;
  --navy: #0B2B4F;
  --sand: #F4F1DE;
  --steel: #8D9AA5;
  --mist: #D3E0EA;
  --font-head: "DIN Condensed", "Arial Narrow", sans-serif;
  --font-body: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-data: "Roboto Mono", "SF Mono", monospace;
  --rail-width: 260px;
  --header-h: 64px;
  --ease: 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  background: var(--space-blue);
  color: var(--sand);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--sand);
  margin: 0 0 16px;
}

p {
  margin: 0 0 16px;
}

a {
  color: var(--neon);
  text-underline-offset: 3px;
}

button {
  font-family: inherit;
  cursor: pointer;
}

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

::selection {
  background: var(--neon);
  color: var(--space-blue);
}

.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: -48px;
  left: 16px;
  z-index: 2000;
  padding: 12px 16px;
  background: var(--neon);
  color: var(--space-blue);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  border-radius: 0 0 4px 4px;
  transition: top var(--ease);
}

.skip-link:focus {
  top: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 2px;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease), border-color var(--ease);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--voltage);
  color: var(--space-blue);
}

.btn-primary:hover {
  background: #ff8138;
  box-shadow: 0 0 24px rgba(255, 106, 0, 0.45);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(57, 255, 20, 0.5);
  color: var(--neon);
}

.btn-ghost:hover {
  background: rgba(57, 255, 20, 0.1);
  box-shadow: 0 0 18px rgba(57, 255, 20, 0.25);
}

.btn-nav {
  background: var(--voltage);
  color: var(--space-blue);
  justify-content: center;
  padding: 14px 16px;
  font-weight: 700;
  border-radius: 0;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.btn-nav:hover {
  background: #ff8138;
  box-shadow: 0 0 24px rgba(255, 106, 0, 0.5);
  transform: translateX(-2px);
}

.site-header {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 1000;
  width: var(--rail-width);
  display: flex;
  flex-direction: column;
  padding: 28px 24px 20px;
  background: linear-gradient(180deg, rgba(10, 30, 60, 0.78) 0%, rgba(11, 43, 79, 0.6) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-right: 1px solid rgba(211, 224, 234, 0.14);
  transition: background var(--ease), box-shadow var(--ease);
}

.site-header.is-solid {
  background: linear-gradient(180deg, rgba(10, 30, 60, 0.98) 0%, rgba(11, 43, 79, 0.96) 100%);
  box-shadow: 8px 0 32px rgba(0, 0, 0, 0.36);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--sand);
  padding: 4px 0;
}

.brand-mark {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
  padding: 8px 10px;
  background: rgba(57, 255, 20, 0.12);
  border: 1px solid rgba(57, 255, 20, 0.45);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.brand-name {
  display: flex;
  flex-direction: column;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.06em;
  color: var(--sand);
}

.brand-cn {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.32em;
  color: var(--steel);
  text-transform: none;
}

.nav-toggle {
  display: none;
}

.primary-nav {
  margin-top: 40px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  color: var(--mist);
  text-decoration: none;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease), background var(--ease), padding-left var(--ease);
}

.nav-link:hover {
  color: var(--sand);
  background: rgba(15, 76, 92, 0.35);
  padding-left: 16px;
}

.nav-link[aria-current="page"] {
  color: var(--neon);
  border-left-color: var(--neon);
  background: linear-gradient(90deg, rgba(57, 255, 20, 0.14), transparent);
}

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

.nav-index {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--steel);
  min-width: 18px;
}

.btn-nav {
  margin-top: auto;
}

.rail-status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 8px 4px;
  border-top: 1px solid rgba(211, 224, 234, 0.16);
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--steel);
}

.rail-status-icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 8px var(--neon);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(0.8);
  }
}

.header-progress {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  width: 3px;
  height: 0;
  background: linear-gradient(180deg, var(--neon), var(--voltage));
  z-index: 5;
}

.site-main {
  padding-left: var(--rail-width);
  min-height: 60vh;
}

.container {
  width: min(1120px, 100% - 48px);
  margin-inline: auto;
}

.page-section {
  padding: 72px 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  font-size: 13px;
}

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

.breadcrumb a {
  color: var(--steel);
  text-decoration: none;
}

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

.breadcrumb [aria-current="page"] {
  color: var(--sand);
  font-weight: 600;
}

.section-head {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 32px;
}

.section-index {
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--neon);
  letter-spacing: 0.1em;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 0.95;
  text-transform: uppercase;
  margin: 0;
}

.section-desc {
  max-width: 60ch;
  color: var(--steel);
  font-size: 15px;
  line-height: 1.7;
}

.clip-panel {
  position: relative;
  background: rgba(11, 43, 79, 0.82);
  border: 1px solid rgba(211, 224, 234, 0.15);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  padding: 28px;
}

.data-num {
  font-family: var(--font-data);
  font-size: 32px;
  font-weight: 700;
  color: var(--neon);
  line-height: 1;
}

.data-label {
  font-size: 13px;
  color: var(--steel);
}

.status-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 10px var(--neon);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--sand);
  background: rgba(57, 255, 20, 0.1);
  border: 1px solid rgba(57, 255, 20, 0.4);
  border-radius: 2px;
  text-decoration: none;
}

.filter-btn {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  background: rgba(15, 76, 92, 0.3);
  border: 1px solid rgba(141, 154, 165, 0.4);
  color: var(--mist);
  transition: all var(--ease);
}

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

.filter-btn[aria-pressed="true"] {
  background: var(--neon);
  color: var(--space-blue);
  border-color: var(--neon);
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.3);
}

.divider {
  height: 2px;
  border: 0;
  margin: 24px 0;
  background: linear-gradient(90deg, var(--neon), transparent);
}

.card {
  background: rgba(11, 43, 79, 0.82);
  border: 1px solid rgba(211, 224, 234, 0.14);
  padding: 24px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-data);
  font-size: 14px;
}

.data-table th {
  text-align: left;
  padding: 10px 12px;
  color: var(--steel);
  border-bottom: 1px solid rgba(211, 224, 234, 0.2);
  font-weight: 500;
}

.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(211, 224, 234, 0.08);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

[data-filter-item][data-hidden] {
  display: none !important;
}

.data-stream-bg {
  position: relative;
  overflow: hidden;
}

.data-stream-bg::before {
  content: "";
  position: absolute;
  inset: -50%;
  background: repeating-linear-gradient(45deg, transparent 0 24px, rgba(57, 255, 20, 0.06) 24px 25px);
  animation: stream 24s linear infinite;
  pointer-events: none;
}

@keyframes stream {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(24px, -24px, 0);
  }
}

.grid-lines {
  background-image:
    linear-gradient(rgba(211, 224, 234, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(211, 224, 234, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
}

.site-footer {
  padding-left: var(--rail-width);
  background: var(--space-blue);
  border-top: 1px solid rgba(57, 255, 20, 0.3);
  color: var(--mist);
  position: relative;
}

.footer-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin: 48px 56px 0;
  padding: 28px 32px;
  background: linear-gradient(135deg, var(--teal), var(--navy));
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

.footer-banner-text {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  color: var(--sand);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr;
  gap: 48px;
  padding: 64px 56px 48px;
}

.footer-logo {
  font-family: var(--font-head);
  font-size: 26px;
  font-weight: 700;
  color: var(--sand);
  text-decoration: none;
}

.footer-logo-cn {
  display: block;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--steel);
  text-transform: none;
}

.footer-about {
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
  max-width: 40ch;
  margin-top: 16px;
}

.footer-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  align-content: start;
}

.footer-nav a {
  color: var(--mist);
  text-decoration: none;
  font-size: 14px;
  padding: 4px 0;
  transition: color var(--ease), padding-left var(--ease);
}

.footer-nav a:hover {
  color: var(--neon);
  padding-left: 4px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
}

.footer-contact a {
  color: var(--mist);
  text-decoration: none;
}

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

.footer-contact-note {
  font-size: 12px;
  color: var(--steel);
  line-height: 1.6;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  padding: 20px 56px;
  border-top: 1px solid rgba(211, 224, 234, 0.14);
  font-size: 13px;
  color: var(--steel);
}

.footer-meta-links {
  display: flex;
  gap: 20px;
}

.footer-meta-links a {
  color: var(--steel);
  text-decoration: none;
}

.footer-meta-links a:hover {
  color: var(--neon);
}

.footer-icp {
  margin: 0;
}

.footer-copyright {
  margin: 0;
  padding: 16px 56px 40px;
  font-size: 12px;
  color: var(--steel);
  border-top: 1px dashed rgba(141, 154, 165, 0.25);
  text-align: center;
}

[data-year] {
  font-family: var(--font-data);
}

@media (max-width: 1280px) {
  :root {
    --rail-width: 240px;
  }
}

@media (max-width: 960px) {
  :root {
    --rail-width: 240px;
  }

  .site-header {
    inset: 0 0 auto 0;
    width: 100%;
    height: var(--header-h);
    flex-direction: row;
    align-items: center;
    gap: 16px;
    padding: 0 16px;
    border-right: none;
    border-bottom: 1px solid rgba(211, 224, 234, 0.14);
    background: rgba(10, 30, 60, 0.95);
  }

  .site-header.is-solid {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  }

  .brand {
    flex: 1;
  }

  .brand-mark {
    font-size: 24px;
    padding: 6px 8px;
  }

  .brand-name {
    font-size: 16px;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: rgba(15, 76, 92, 0.4);
    border: 1px solid rgba(211, 224, 234, 0.3);
    border-radius: 2px;
  }

  .nav-toggle-line {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--neon);
    transition: transform var(--ease), opacity var(--ease);
  }

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

  .primary-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    width: min(340px, 88vw);
    margin: 0;
    padding: 24px 20px 32px;
    background: rgba(10, 30, 60, 0.98);
    border-left: 1px solid rgba(57, 255, 20, 0.25);
    box-shadow: -16px 0 40px rgba(0, 0, 0, 0.4);
    transform: translateX(105%);
    transition: transform var(--ease);
    z-index: 999;
    overflow-y: auto;
  }

  .primary-nav[data-open] {
    transform: none;
  }

  .btn-nav {
    margin-top: 32px;
  }

  .rail-status {
    display: none;
  }

  .header-progress {
    top: auto;
    bottom: 0;
    right: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--neon), var(--voltage));
  }

  .site-main,
  .site-footer {
    padding-left: 0;
  }

  .site-main {
    padding-top: var(--header-h);
  }
}

@media (max-width: 720px) {
  .container {
    width: min(1120px, 100% - 32px);
  }

  .page-section {
    padding: 48px 0;
  }

  .footer-banner {
    margin: 24px 24px 0;
    padding: 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    padding: 40px 24px;
    gap: 32px;
  }

  .footer-meta {
    flex-direction: column;
    padding: 16px 24px;
  }

  .footer-copyright {
    padding: 16px 24px 32px;
  }
}

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

  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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