:root {
  --font-head: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-data: "Roboto Mono", "Courier New", monospace;
  --space-blue: #0B1B2B;
  --midnight-navy: #12293E;
  --neon-green: #39FF14;
  --energy-orange: #FF6B00;
  --sky-glow: #2A4B6B;
  --paper-white: #F5F7FA;
  --graphite: #333A44;
  --line-blue: #4A90E2;
  --success-green: #28C76F;
  --warning-yellow: #FFC107;
  --header-width: 280px;
  --content-max: 1600px;
  --radius-small: 4px;
  --radius-medium: 8px;
  --shadow-1: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-2: 0 10px 30px rgba(0, 0, 0, 0.45);
  --ease: cubic-bezier(0.25, 0.8, 0.4, 1);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--paper-white);
  background:
    radial-gradient(circle at 80% 0%, rgba(42, 75, 107, 0.35), transparent 42%),
    var(--space-blue);
  padding-left: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.25;
  color: var(--paper-white);
  margin: 0 0 0.6em;
}

p {
  margin: 0 0 1rem;
}

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

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

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

small {
  font-size: 92%;
}

button {
  font-family: inherit;
  font-size: 100%;
  line-height: 1;
  border: 0;
  background: none;
  cursor: pointer;
  color: inherit;
}

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

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

body.has-site-nav-open {
  overflow: hidden;
}

@media (min-width: 1024px) {
  body {
    padding-left: var(--header-width);
  }
}

@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;
    scroll-behavior: auto !important;
  }
}

.site-container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 48px);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
  margin: 0 0 24px;
}

.section-kicker {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--energy-orange);
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 900;
  color: var(--paper-white);
  margin-top: 6px;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 24px;
}

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

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

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

.card {
  background: var(--midnight-navy);
  border: 1px solid rgba(74, 144, 226, 0.25);
  border-radius: var(--radius-medium);
  padding: 24px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
}

.btn-primary {
  background: linear-gradient(90deg, var(--neon-green), #aef52a);
  color: var(--space-blue);
  box-shadow: 0 6px 18px rgba(57, 255, 20, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(57, 255, 20, 0.35);
}

.btn-ghost {
  border-color: rgba(74, 144, 226, 0.5);
  color: var(--paper-white);
  background: rgba(18, 41, 62, 0.6);
}

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

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 0;
  font-size: 0.85rem;
  color: rgba(245, 255, 250, 0.6);
}

.breadcrumbs a {
  color: var(--line-blue);
}

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

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

.tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: var(--radius-small);
  background: rgba(255, 107, 0, 0.15);
  color: var(--energy-orange);
  border: 1px solid rgba(255, 107, 0, 0.35);
}

.tag-badge[data-tone="success"] {
  background: rgba(40, 199, 111, 0.15);
  color: var(--success-green);
  border-color: rgba(40, 199, 111, 0.35);
}

.tag-badge[data-tone="warn"] {
  background: rgba(255, 193, 7, 0.15);
  color: var(--warning-yellow);
  border-color: rgba(255, 193, 7, 0.35);
}

.media-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(74, 144, 226, 0.3);
  background:
    linear-gradient(135deg, rgba(74, 144, 226, 0.45), rgba(18, 41, 62, 0.82) 60%),
    var(--midnight-navy);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.media-frame::before {
  content: attr(data-label);
  position: absolute;
  left: 14px;
  bottom: 12px;
  color: rgba(245, 255, 250, 0.7);
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.media-frame::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, transparent, rgba(255, 107, 0, 0.3));
}

.data-chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-data);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--neon-green);
  padding: 4px 8px;
  background: rgba(57, 255, 20, 0.1);
  border: 1px solid rgba(57, 255, 20, 0.3);
  border-radius: var(--radius-small);
}

.data-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(74, 144, 226, 0.15);
  font-family: var(--font-data);
  font-size: 0.9rem;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 300;
  background: var(--neon-green);
  color: var(--space-blue);
  padding: 12px 18px;
  border-radius: 6px;
  font-family: var(--font-head);
  font-weight: 700;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--header-width);
  background: var(--space-blue);
  border-right: 1px solid rgba(74, 144, 226, 0.32);
  z-index: 100;
  overflow: hidden;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(74, 144, 226, 0.06) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, rgba(74, 144, 226, 0.06) 1px, transparent 1px) 0 0 / 24px 24px;
  pointer-events: none;
}

.site-header::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 240px;
  height: 180px;
  background: linear-gradient(135deg, transparent 44%, rgba(255, 107, 0, 0.18) 44%);
  transform: rotate(-16deg);
  pointer-events: none;
}

.site-header-shell {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.site-header-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 18px 14px;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-brand-mark {
  display: inline-block;
  background: var(--neon-green);
  color: var(--space-blue);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1.35rem;
  line-height: 1;
  letter-spacing: -1px;
  padding: 8px 9px;
  border-radius: var(--radius-small);
  transform: skew(-12deg);
}

.site-brand-copy {
  display: flex;
  flex-direction: column;
}

.site-brand-name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.15rem;
  color: var(--paper-white);
  letter-spacing: 0.02em;
}

.site-brand-tagline {
  font-size: 0.72rem;
  color: var(--line-blue);
  letter-spacing: 0.12em;
}

.site-nav {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.site-nav-track {
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 27px;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--line-blue) 18%, var(--line-blue) 82%, transparent);
  opacity: 0.5;
}

.site-nav-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 8px 0 28px;
}

.site-nav-item {
  position: relative;
}

.site-nav-link {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 20px 12px 56px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  color: rgba(245, 255, 250, 0.72);
  border-left: 3px solid transparent;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.site-nav-link::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 8px;
  height: 8px;
  background: var(--space-blue);
  border: 1px solid var(--line-blue);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), box-shadow 0.2s var(--ease), left 0.2s var(--ease);
}

.site-nav-link:hover {
  color: var(--paper-white);
  background: linear-gradient(90deg, rgba(74, 144, 226, 0.18), transparent);
}

.site-nav-link:hover::before {
  border-color: var(--neon-green);
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.6);
}

.site-nav-link[aria-current="page"] {
  color: var(--neon-green);
  background: rgba(57, 255, 20, 0.08);
  border-left-color: var(--neon-green);
}

.site-nav-link[aria-current="page"]::before {
  left: 17px;
  background: var(--neon-green);
  border-color: var(--neon-green);
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.8);
  animation: nav-pulse 2s ease-in-out infinite;
}

@keyframes nav-pulse {
  0%, 100% {
    box-shadow: 0 0 4px rgba(57, 255, 20, 0.5);
  }
  50% {
    box-shadow: 0 0 16px rgba(57, 255, 20, 0.9);
  }
}

.site-header-cta {
  display: block;
  margin: 0 20px 18px;
  padding: 14px 16px;
  background: linear-gradient(90deg, var(--neon-green), #aef52a);
  color: #08121c;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 0.95rem;
  text-align: center;
  border-radius: var(--radius-small);
  position: relative;
  transform: skew(-6deg);
  box-shadow: 0 6px 18px rgba(57, 255, 20, 0.22);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.site-header-cta::after {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(11, 27, 43, 0.2);
  border-radius: 2px;
  pointer-events: none;
}

.site-header-cta:hover {
  transform: skew(-6deg) translateY(-2px);
  box-shadow: 0 10px 28px rgba(57, 255, 20, 0.32);
}

.site-header-coord {
  display: block;
  text-align: center;
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: rgba(245, 255, 250, 0.35);
  padding-bottom: 18px;
}

.site-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: rgba(18, 41, 62, 0.8);
  border: 1px solid rgba(74, 144, 226, 0.45);
  border-radius: 6px;
}

.site-nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--neon-green);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

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

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

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

.site-footer {
  position: relative;
  background: var(--space-blue);
  border-top: 1px solid rgba(74, 144, 226, 0.35);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(74, 144, 226, 0.07) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, rgba(74, 144, 226, 0.07) 1px, transparent 1px) 0 0 / 24px 24px;
  pointer-events: none;
}

.site-footer::after {
  content: "";
  position: absolute;
  top: 0;
  left: -20%;
  width: 120%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--energy-orange), var(--neon-green), transparent);
  opacity: 0.5;
  pointer-events: none;
}

.site-footer-top {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 48px clamp(16px, 4vw, 48px) 36px;
}

.site-footer-brand {
  max-width: 420px;
}

.site-footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.site-footer-logo-mark {
  display: inline-block;
  background: var(--neon-green);
  color: var(--space-blue);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1rem;
  padding: 7px 8px;
  border-radius: var(--radius-small);
  transform: skew(-12deg);
}

.site-footer-logo-text {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.05rem;
  line-height: 1.35;
  color: var(--paper-white);
}

.site-footer-logo-region {
  color: var(--line-blue);
  font-size: 0.9rem;
}

.site-footer-trust {
  font-size: 0.92rem;
  color: rgba(245, 255, 250, 0.62);
  margin-bottom: 14px;
}

.site-footer-coord {
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: rgba(245, 255, 250, 0.35);
}

.site-footer-col {
  min-width: 0;
}

.site-footer-title {
  position: relative;
  font-size: 0.85rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--neon-green);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-left: 14px;
}

.site-footer-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 6px;
  height: 6px;
  background: var(--energy-orange);
  transform: rotate(45deg);
}

.site-footer-list li {
  margin-bottom: 10px;
}

.site-footer-list a {
  color: rgba(245, 255, 250, 0.72);
  font-size: 0.92rem;
  transition: color 0.2s var(--ease);
}

.site-footer-list a:hover {
  color: var(--neon-green);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-footer-contact-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.88rem;
  color: rgba(245, 255, 250, 0.72);
}

.site-footer-label {
  color: rgba(245, 255, 250, 0.42);
}

.site-footer-value {
  font-family: var(--font-data);
  color: var(--line-blue);
}

.site-footer-bottom {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px 28px;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 18px clamp(16px, 4vw, 48px);
  border-top: 1px solid rgba(74, 144, 226, 0.18);
  color: rgba(245, 255, 250, 0.42);
}

.site-footer-copy,
.site-footer-icp,
.site-footer-address {
  margin: 0;
}

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

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

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .site-footer-top {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
    padding-top: 56px;
  }
}

@media (max-width: 1023px) {
  .site-header {
    position: sticky;
    top: 0;
    bottom: auto;
    width: 100%;
    border-right: 0;
    border-bottom: 1px solid rgba(74, 144, 226, 0.25);
  }

  .site-header-shell {
    height: auto;
  }

  .site-header-topbar {
    height: 68px;
    padding: 0 16px;
  }

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

  .site-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 99;
    display: none;
    flex-direction: column;
    overflow-y: auto;
    background:
      linear-gradient(rgba(74, 144, 226, 0.07) 1px, transparent 1px) 0 0 / 24px 24px,
      linear-gradient(90deg, rgba(74, 144, 226, 0.07) 1px, transparent 1px) 0 0 / 24px 24px,
      linear-gradient(180deg, var(--midnight-navy), var(--space-blue) 60%);
    padding: 20px 24px 28px;
  }

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

  .site-nav-track {
    left: 23px;
  }

  .site-nav-list {
    gap: 4px;
    margin: 4px 0 20px;
  }

  .site-nav-link {
    font-size: 1.05rem;
    padding: 14px 20px 14px 44px;
  }

  .site-nav-link::before {
    left: 20px;
  }

  .site-nav-link[aria-current="page"]::before {
    left: 14px;
  }

  .site-header-cta {
    margin-top: auto;
  }
}

@media (min-width: 1024px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .site-footer-top {
    gap: 28px;
  }

  .site-footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .site-footer-contact-line {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}