:root {
  --bg-primary: #0B1B3B;
  --bg-secondary: #122A52;
  --bg-card: #1E3A6E;
  --accent-green: #00FF88;
  --accent-green-light: #8AFFC1;
  --accent-orange: #FF7A00;
  --text-primary: #F5F7FA;
  --text-secondary: #B0C4DE;
  --border: #2A5C8E;
  --light-panel: #EAF4FF;
  --font-heading: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-data: "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
  --container-max: 1200px;
  --transition-fast: 180ms ease;
  --transition-slow: 360ms cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-elevation: 0 8px 30px rgba(0, 0, 0, 0.35);
}

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.2;
  margin: 0 0 0.5em;
  color: var(--text-primary);
}

p {
  margin-top: 0;
}

a {
  color: var(--accent-green);
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-green-light);
}

ul, ol {
  padding-left: 1.2em;
}

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

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

.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;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding: 96px 0;
}

.section-narrow {
  max-width: 820px;
  margin-inline: auto;
}

.section-wide {
  max-width: 1360px;
  margin-inline: auto;
}

.section-lead {
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.6;
  color: var(--text-secondary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary {
  background: var(--accent-green);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: var(--accent-green-light);
  color: var(--bg-primary);
  box-shadow: 0 0 24px rgba(0, 255, 136, 0.4);
}

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

.btn-outline:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  box-shadow: 0 0 12px rgba(0, 255, 136, 0.2);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 17px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  margin: 0;
  list-style: none;
  color: var(--text-secondary);
  font-size: 14px;
}

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

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

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

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

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

.grid {
  display: grid;
  gap: 24px;
}

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

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

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

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow), border-color var(--transition-slow);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevation);
  border-color: var(--accent-green);
}

.card-title {
  font-size: 20px;
  margin-bottom: 8px;
}

.card-metric {
  font-family: var(--font-data);
  font-size: 64px;
  font-weight: 500;
  line-height: 1;
  color: var(--accent-green);
  display: block;
}

.tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 4px;
  background: rgba(255, 122, 0, 0.15);
  color: var(--accent-orange);
  border: 1px solid rgba(255, 122, 0, 0.4);
}

.tag-green {
  background: rgba(0, 255, 136, 0.15);
  color: var(--accent-green);
  border-color: rgba(0, 255, 136, 0.4);
}

.tag-outline {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}

.data-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-elevation);
}

.data-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.data-panel-body {
  padding: 24px;
}

.datagrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}

.data-number {
  font-family: var(--font-data);
  font-size: 48px;
  font-weight: 500;
  line-height: 1;
  color: var(--accent-green);
  display: block;
}

.data-label {
  font-size: 13px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.figure {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
}

.figure::before {
  content: "";
  display: block;
  padding-bottom: 56.25%;
}

.figure-4x3::before {
  padding-bottom: 75%;
}

.figure-1x1::before {
  padding-bottom: 100%;
}

.figure > img,
.figure > .media-placeholder {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.figure > img {
  object-fit: cover;
}

.figure-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 16px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  color: #fff;
  font-size: 13px;
  z-index: 1;
}

.media-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  background:
    radial-gradient(circle at 30% 30%, rgba(0, 255, 136, 0.12) 0, transparent 60%),
    radial-gradient(circle at 70% 70%, rgba(255, 122, 0, 0.12) 0, transparent 60%),
    var(--bg-card);
  color: var(--text-secondary);
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.05em;
  text-align: center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 27, 59, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-orange));
  z-index: 1;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent-green);
  color: var(--bg-primary);
  padding: 12px 20px;
  font-weight: 700;
  text-decoration: none;
  z-index: 200;
  border-radius: 0 0 6px 0;
}

.skip-link:focus {
  left: 0;
  color: var(--bg-primary);
}

.masthead {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 24px;
  padding-bottom: 16px;
  text-align: center;
  position: relative;
}

.masthead-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: 0.02em;
}

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

.brand-mark {
  position: relative;
  display: inline-block;
  width: 12px;
  height: 12px;
  background: var(--accent-green);
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(0, 255, 136, 0.7);
}

.brand-mark::after {
  content: "";
  position: absolute;
  top: -4px;
  right: -4px;
  width: 6px;
  height: 6px;
  background: var(--accent-orange);
  border-radius: 50%;
}

.brand-text {
  display: inline-block;
  white-space: nowrap;
}

.brand small {
  font-size: 0.6em;
  font-weight: 500;
  color: var(--text-secondary);
  margin-left: 2px;
}

.edition {
  display: inline-block;
  background: var(--accent-orange);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  letter-spacing: 0.08em;
  line-height: 1.2;
  box-shadow: 0 0 12px rgba(255, 122, 0, 0.3);
}

.tagline {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.35em;
  text-indent: 0.35em;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin: 12px 0 0;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-direction: column;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  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-nav {
  border-top: 1px solid var(--border);
  background: rgba(18, 42, 82, 0.55);
}

.nav-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0 24px;
}

.nav-list a {
  display: block;
  padding: 14px 22px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.02em;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.nav-list a:hover {
  color: var(--text-primary);
  border-color: var(--accent-green);
  background: rgba(0, 255, 136, 0.04);
}

.nav-list a[aria-current="page"] {
  color: var(--accent-green);
  border-color: var(--accent-green);
  font-weight: 700;
}

.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 64px 0 24px;
  margin-top: 80px;
}

.site-footer::before {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-green));
  margin-bottom: 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px 64px;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 900;
  margin: 0 0 8px;
}

.footer-brand small {
  font-size: 0.6em;
  color: var(--text-secondary);
  font-weight: 500;
}

.footer-tagline {
  font-size: 13px;
  letter-spacing: 0.25em;
  text-indent: 0.25em;
  text-transform: uppercase;
  color: var(--accent-green);
  margin: 8px 0 16px;
}

.footer-trust {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 480px;
}

.footer-col-title {
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li + li {
  margin-top: 12px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-green);
  padding-left: 4px;
}

.footer-contact {
  border-top: 1px solid var(--border);
  margin-top: 48px;
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 32px;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-contact p {
  margin: 0;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid var(--border);
  margin-top: 24px;
  padding-top: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-bottom p {
  margin: 0;
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (max-width: 900px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-brand-col {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .masthead {
    padding-top: 16px;
    padding-bottom: 12px;
  }

  .masthead-row {
    width: 100%;
    justify-content: space-between;
    padding-right: 56px;
  }

  .nav-toggle {
    display: flex;
    position: absolute;
    right: 16px;
    top: 16px;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-elevation);
  }

  .site-nav[data-open] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    padding: 8px 16px;
  }

  .nav-list a {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    border-left: 2px solid transparent;
  }

  .nav-list li:last-child a {
    border-bottom: 0;
  }

  .nav-list a[aria-current="page"] {
    border-left-color: var(--accent-green);
    background: rgba(0, 255, 136, 0.05);
  }
}

@media (max-width: 600px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .footer-brand-col {
    grid-column: auto;
  }

  .footer-contact {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 4px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

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

  .nav-list a,
  .btn,
  .card,
  .footer-links a,
  .brand-mark,
  .brand-mark::after {
    transition: none !important;
  }

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