:root {
  --color-bg-primary: #050A18;
  --color-bg-secondary: #0D1526;
  --color-surface: #18233F;
  --color-accent: #39FF88;
  --color-accent-hot: #FF8A29;
  --color-text-main: #F2F6FF;
  --color-text-secondary: #A8B3CC;
  --color-text-muted: #6B7A99;
  --color-success: #1CCC72;
  --color-warning: #FFC84A;
  --color-link: #5B82C7;
  --color-border: #293B5F;
  --color-border-light: #34497A;
  --font-display: 'Archivo Black', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'Roboto Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --container-max: 1440px;
  --container-padding: 24px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
  --header-top-h: 42px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  background: var(--color-bg-primary);
  color: var(--color-text-secondary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-main);
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.2rem, 4.5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.12rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
  line-height: 1.75;
  font-size: 15px;
  margin-bottom: 1em;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

strong {
  color: var(--color-text-main);
  font-weight: 600;
}

code,
.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.skip-link {
  position: fixed;
  top: -100%;
  left: 16px;
  z-index: 2000;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-bg-primary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transition: top 0.25s ease;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(5, 10, 24, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(5, 10, 24, 0.97);
  box-shadow: var(--shadow-md);
}

.header-top {
  position: relative;
  overflow: hidden;
  z-index: 2;
  max-height: var(--header-top-h);
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  transition: max-height 0.3s ease, opacity 0.25s ease;
}

.header-top::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(57, 255, 136, 0.10) 0%, rgba(57, 255, 136, 0) 30%, rgba(255, 138, 41, 0.08) 75%, rgba(255, 138, 41, 0) 100%);
  pointer-events: none;
}

.site-header.is-scrolled .header-top {
  max-height: 0;
  opacity: 0;
}

.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  min-height: var(--header-top-h);
}

.header-top-slogan {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-top-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.header-top-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(57, 255, 136, 0.06);
}

.header-top-link--hot {
  background: rgba(57, 255, 136, 0.12);
  border-color: rgba(57, 255, 136, 0.35);
  color: var(--color-accent);
}

.header-top-link--hot:hover {
  background: rgba(57, 255, 136, 0.2);
  border-color: rgba(57, 255, 136, 0.6);
}

.header-top-link-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

.header-top-link--hot .header-top-link-dot {
  animation: header-dot-pulse 2.4s ease-out infinite;
}

.header-top-link:not(.header-top-link--hot) .header-top-link-dot {
  background: var(--color-text-muted);
}

@keyframes header-dot-pulse {
  0% { box-shadow: 0 0 0 0 rgba(57, 255, 136, 0.45); }
  70% { box-shadow: 0 0 0 6px rgba(57, 255, 136, 0); }
  100% { box-shadow: 0 0 0 0 rgba(57, 255, 136, 0); }
}

.header-main {
  position: relative;
  z-index: 3;
}

.header-main-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  min-height: 80px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  color: var(--color-text-main);
  text-decoration: none;
  flex-shrink: 0;
}

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

.site-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-bg-primary);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  position: relative;
  flex-shrink: 0;
  box-shadow: 0 0 0 4px rgba(57, 255, 136, 0.12);
}

.site-brand-mark::after {
  content: '';
  position: absolute;
  right: 3px;
  bottom: 3px;
  width: 9px;
  height: 9px;
  background: var(--color-accent-hot);
  border: 2px solid var(--color-bg-primary);
  border-radius: 50%;
}

.site-brand-text {
  font-size: 24px;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.site-nav {
  display: flex;
  justify-content: flex-end;
  flex: 1;
}

.site-nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.site-nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.site-nav-link:hover {
  color: var(--color-text-main);
  background: var(--color-surface);
  transform: translateY(-1px);
}

.site-nav-link[aria-current="page"] {
  color: var(--color-bg-primary);
  background: var(--color-accent);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: background 0.2s ease;
}

.nav-toggle:hover {
  background: var(--color-border);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-main);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s 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-progress-track {
  height: 3px;
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
}

.site-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hot));
  transition: width 0.08s ease-out;
  will-change: width;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  background: transparent;
  border: 2px solid transparent;
  color: var(--color-text-main);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

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

.btn--primary:hover {
  background: transparent;
  color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(57, 255, 136, 0.2);
}

.btn--outline {
  border-color: var(--color-border);
  color: var(--color-text-main);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}

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

.btn--hot:hover {
  background: transparent;
  color: var(--color-accent-hot);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(255, 138, 41, 0.2);
}

.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-light);
}

.card--surface {
  background: var(--color-surface);
}

.card--accent {
  border-left: 4px solid var(--color-accent);
}

.card--hot {
  border-left: 4px solid var(--color-accent-hot);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.2;
  white-space: nowrap;
}

.tag--hot {
  background: rgba(255, 138, 41, 0.1);
  border-color: rgba(255, 138, 41, 0.3);
  color: var(--color-accent-hot);
}

.tag--accent {
  background: rgba(57, 255, 136, 0.1);
  border-color: rgba(57, 255, 136, 0.3);
  color: var(--color-accent);
}

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

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

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

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-size: 13px;
  color: var(--color-text-muted);
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
}

.breadcrumb-item:not(:last-child)::after {
  content: '/';
  color: var(--color-text-muted);
  opacity: 0.5;
}

.breadcrumb-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.breadcrumb-current {
  color: var(--color-text-main);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 240px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.table-wrap th,
.table-wrap td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.table-wrap th {
  background: var(--color-surface);
  color: var(--color-text-main);
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.table-wrap tr:last-child td {
  border-bottom: none;
}

.table-wrap tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.legend-dot {
  display: inline-block;
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.legend-dot--hot {
  background: var(--color-accent-hot);
}

.legend-dot--muted {
  background: var(--color-text-muted);
}

.media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  aspect-ratio: 16 / 9;
}

.media--portrait {
  aspect-ratio: 4 / 5;
}

.media--square {
  aspect-ratio: 1 / 1;
}

.media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-muted);
  background: linear-gradient(135deg, rgba(57, 255, 136, 0.06) 0%, rgba(57, 255, 136, 0) 40%), var(--color-bg-secondary);
}

.site-footer {
  position: relative;
  margin-top: 80px;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent) 0%, transparent 35%, var(--color-border) 60%, var(--color-accent-hot) 100%);
  opacity: 0.75;
  pointer-events: none;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 56px var(--container-padding) 44px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 24px;
  color: var(--color-text-main);
  text-decoration: none;
  margin-bottom: 16px;
}

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

.footer-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-bg-primary);
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: 12px;
}

.footer-trust {
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-text-muted);
  max-width: 420px;
  margin-bottom: 0;
}

.footer-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-main);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
}

.footer-heading::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 14px;
  border-radius: 2px;
  background: var(--color-accent);
  flex-shrink: 0;
}

.footer-links {
  display: grid;
  gap: 12px;
  list-style: none;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-secondary);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-links a::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-border);
  transition: background 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-accent);
  transform: translateX(2px);
}

.footer-links a:hover::before {
  background: var(--color-accent);
}

.footer-contact-list {
  display: grid;
  gap: 14px;
  list-style: none;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.contact-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 3px;
}

.footer-bottom {
  background: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 18px var(--container-padding);
  font-size: 13px;
  color: var(--color-text-muted);
}

.footer-copyright,
.footer-icp {
  margin: 0;
  font-size: 13px;
  color: var(--color-text-muted);
}

.scroll-top-btn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text-main);
  font-size: 18px;
  line-height: 1;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s linear 0.25s, background 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}

.scroll-top-btn.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s;
}

.scroll-top-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg-primary);
}

.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;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 8px;
}

@media (max-width: 1023px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 10;
    flex: none;
    display: block;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 16px var(--container-padding) 24px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0s linear 0.22s;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0s;
  }

  .site-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .site-nav-link {
    justify-content: flex-start;
    padding: 14px 18px;
    font-size: 16px;
    border-radius: var(--radius-md);
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding-top: 44px;
    padding-bottom: 36px;
  }

  .site-brand-text {
    font-size: 21px;
  }

  .header-main-inner {
    min-height: 72px;
  }
}

@media (max-width: 767px) {
  :root {
    --container-padding: 16px;
  }

  .header-top-slogan {
    display: none;
  }

  .header-top-inner {
    justify-content: flex-end;
  }

  .header-top-link {
    padding: 4px 10px;
    font-size: 11px;
  }

  .header-main-inner {
    min-height: 64px;
    gap: 12px;
  }

  .site-brand-mark {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px var(--container-padding) 28px;
  }

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

  .scroll-top-btn {
    right: 16px;
    bottom: 16px;
  }

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

@media (max-width: 1023px) and (min-width: 768px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@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;
  }

  .header-top-link--hot .header-top-link-dot {
    animation: none;
  }
}