:root {
  color-scheme: dark;
  --bg-primary: #0B1E3A;
  --bg-secondary: #122A4A;
  --bg-deep: #081426;
  --gold: #D4AF37;
  --gold-light: #F5D061;
  --orange: #FF6B35;
  --text-primary: #E8EAF2;
  --text-secondary: #9BA7B9;
  --line-color: #2D4F7C;
  --font-head: 'Montserrat Black', '思源黑体 Heavy', sans-serif;
  --font-body: 'Inter Light', '思源黑体 Light', sans-serif;
  --font-data: 'Roboto Mono', 'SF Mono', monospace;
  --container-width: 1320px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --ease-out-back: cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(ellipse at 12% -10%, rgba(212, 175, 55, 0.08), transparent 55%),
    radial-gradient(ellipse at 88% 110%, rgba(45, 79, 124, 0.24), transparent 60%),
    linear-gradient(180deg, var(--bg-primary) 0%, #0D2344 50%, var(--bg-primary) 100%);
  min-height: 100vh;
}

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

ul, ol {
  list-style: none;
}

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

a:hover {
  text-decoration: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.2;
}

button {
  font-family: inherit;
}

::selection {
  background: rgba(212, 175, 55, 0.3);
  color: var(--text-primary);
}

:focus-visible {
  outline: 2px solid var(--gold-light);
  outline-offset: 3px;
  border-radius: 2px;
}

main:focus {
  outline: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 32px;
}

.skip-link {
  position: fixed;
  top: -120px;
  left: 20px;
  z-index: 1000;
  padding: 10px 22px;
  background: var(--gold);
  color: var(--bg-primary);
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: top 0.3s var(--ease-out-back);
}

.skip-link:focus-visible {
  top: 18px;
}

.site-topbar {
  background: linear-gradient(90deg, rgba(18, 42, 74, 0.96), rgba(11, 30, 58, 0.98));
  border-bottom: 1px solid rgba(212, 175, 55, 0.22);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 42px;
  padding-block: 6px;
}

.topbar-notice {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.topbar-notice:hover {
  color: var(--gold);
}

.topbar-notice::after {
  content: '→';
  color: var(--gold);
  font-family: var(--font-data);
  font-size: 0.8125rem;
  transition: transform 0.2s ease;
}

.topbar-notice:hover::after {
  transform: translateX(3px);
}

.topbar-badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--orange);
  color: #FFFFFF;
  font-family: var(--font-data);
  font-size: 0.625rem;
  line-height: 1.5;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.topbar-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  position: relative;
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold-light);
  box-shadow: 0 0 8px rgba(245, 208, 97, 0.5);
}

.status-dot::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--gold-light);
  animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }
  70% {
    transform: scale(2.6);
    opacity: 0;
  }
  100% {
    transform: scale(2.6);
    opacity: 0;
  }
}

.status-text {
  font-family: var(--font-data);
  font-size: 0.6875rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 30, 58, 0.97);
  border-bottom: 1px solid rgba(212, 175, 55, 0.16);
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(45, 79, 124, 0.16) 39px 40px),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(45, 79, 124, 0.12) 39px 40px);
  pointer-events: none;
}

.header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  height: 88px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.brand-emblem {
  position: relative;
  display: block;
  width: 40px;
  height: 40px;
  border: 2px solid var(--gold);
  border-radius: 8px;
  transform: rotate(45deg);
  flex-shrink: 0;
}

.brand-emblem::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid var(--orange);
  border-radius: 4px;
}

.brand-emblem::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 6px;
  background: var(--gold-light);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 10px rgba(245, 208, 97, 0.7);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.brand-sub {
  font-family: var(--font-data);
  font-size: 0.625rem;
  letter-spacing: 0.32em;
  color: var(--gold);
  text-transform: uppercase;
  margin-top: 2px;
}

.site-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item {
  margin: 0;
  padding: 0;
}

.nav-link {
  position: relative;
  display: block;
  padding: 12px 16px;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  white-space: nowrap;
  transition: color 0.2s ease;
}

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

@media (min-width: 961px) {
  .nav-link::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 4px;
    height: 2px;
    background: linear-gradient(90deg, var(--gold), var(--orange));
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.35s var(--ease-out-back);
  }

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

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

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: var(--radius-sm);
  background: rgba(212, 175, 55, 0.06);
  cursor: pointer;
  padding: 0;
  transition: border-color 0.25s ease, background 0.25s ease;
  position: relative;
  z-index: 310;
}

.nav-toggle:hover {
  border-color: var(--gold);
  background: rgba(212, 175, 55, 0.14);
}

.toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-out-back), opacity 0.2s ease;
}

.nav-toggle.is-active .toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0.3);
}

.nav-toggle.is-active .toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--orange));
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.4);
  z-index: 999;
  pointer-events: none;
}

.site-footer {
  background: var(--bg-deep);
  border-top: 4px solid var(--gold);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--gold-light) 30%, var(--orange) 70%, transparent 100%);
}

.footer-main {
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 56px;
  padding-bottom: 48px;
}

.footer-emblem {
  position: relative;
  display: block;
  width: 34px;
  height: 34px;
  border: 2px solid var(--gold);
  border-radius: 6px;
  transform: rotate(45deg);
  margin-bottom: 18px;
}

.footer-emblem::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid var(--orange);
  border-radius: 3px;
}

.footer-brand-name {
  font-family: var(--font-head);
  font-size: 1.25rem;
  color: var(--text-primary);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.footer-trust {
  font-size: 0.75rem;
  color: rgba(155, 167, 185, 0.7);
  line-height: 1.7;
  border-left: 2px solid rgba(212, 175, 55, 0.4);
  padding-left: 12px;
  margin-top: 20px;
}

.footer-heading {
  font-size: 0.875rem;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

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

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

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

.contact-line {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  margin-bottom: 8px;
}

.footer-note {
  font-size: 0.75rem;
  color: rgba(155, 167, 185, 0.72);
  line-height: 1.7;
  margin-top: 14px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 20px;
  border-top: 1px solid rgba(45, 79, 124, 0.5);
  padding-block: 20px 24px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.footer-icp {
  font-family: var(--font-data);
  color: rgba(155, 167, 185, 0.8);
}

.section {
  padding-block: 72px;
}

.section-head {
  max-width: 720px;
  margin-bottom: 44px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  line-height: 1.12;
}

.section-sub {
  margin-top: 12px;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.75;
}

.divider-gold {
  display: block;
  width: 72px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--orange) 100%);
  margin-bottom: 20px;
}

.data-note {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid rgba(212, 175, 55, 0.4);
  color: var(--gold);
  background: rgba(212, 175, 55, 0.1);
}

.chip[data-tone="warn"] {
  border-color: rgba(255, 107, 53, 0.5);
  color: var(--orange);
  background: rgba(255, 107, 53, 0.1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

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

.btn-gold:hover {
  background: var(--gold-light);
  border-color: var(--gold-light);
  box-shadow: 0 6px 24px rgba(212, 175, 55, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--gold);
  border-color: rgba(212, 175, 55, 0.5);
}

.btn-ghost:hover {
  border-color: var(--gold);
  background: rgba(212, 175, 55, 0.1);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.breadcrumbs li::after {
  content: '/';
  color: var(--line-color);
  margin-left: 6px;
}

.breadcrumbs li:last-child::after {
  content: '';
}

.breadcrumbs a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

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

.breadcrumbs .current {
  color: var(--gold);
}

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

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

@media (min-width: 641px) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.card-panel {
  background: linear-gradient(160deg, var(--bg-secondary), rgba(18, 42, 74, 0.78));
  border-radius: var(--radius-md);
  padding: 32px;
  border-left: 3px solid var(--gold);
  box-shadow: 0 12px 40px rgba(2, 8, 18, 0.35);
}

.img-holder {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  background-image: repeating-linear-gradient(45deg, transparent 0 12px, rgba(45, 79, 124, 0.14) 12px 14px);
  overflow: hidden;
}

.img-holder::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(212, 175, 55, 0.08) 48%, transparent 62%);
  background-size: 200% 100%;
  animation: shimmer 2.2s infinite;
  pointer-events: none;
}

@keyframes shimmer {
  from {
    background-position: 200% 0;
  }
  to {
    background-position: -100% 0;
  }
}

.img-holder[data-ratio="16/9"] {
  aspect-ratio: 16 / 9;
}

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

.img-holder[data-ratio="1/1"] {
  aspect-ratio: 1 / 1;
}

.img-holder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s var(--ease-out-back), transform 0.6s var(--ease-out-back);
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}

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

@media (max-width: 960px) {
  .header-inner {
    height: 74px;
  }

  .brand-name {
    font-size: 1.0625rem;
  }

  .brand-sub {
    font-size: 0.5625rem;
    letter-spacing: 0.24em;
  }

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

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(360px, 88vw);
    background: linear-gradient(180deg, #0D2344, #081426);
    border-left: 1px solid rgba(212, 175, 55, 0.2);
    z-index: 300;
    padding: 112px 32px 48px;
    overflow-y: auto;
    transform: translateX(105%);
    transition: transform 0.45s var(--ease-out-back);
    box-shadow: none;
  }

  .site-nav[data-open="true"] {
    transform: translateX(0);
    box-shadow: -32px 0 64px rgba(0, 0, 0, 0.55);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    padding: 14px 10px;
    font-size: 1rem;
    white-space: normal;
    border-bottom: 1px solid rgba(45, 79, 124, 0.32);
  }

  .nav-link[aria-current="page"] {
    color: var(--gold);
    border-left: 2px solid var(--gold);
    padding-left: 8px;
    background: rgba(212, 175, 55, 0.06);
  }

  body.nav-open {
    overflow: hidden;
  }

  body.nav-open::after {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(3, 10, 22, 0.66);
    z-index: 290;
    animation: overlay-in 0.3s ease both;
  }

  body.nav-open .site-header {
    z-index: 310;
  }

  @keyframes overlay-in {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

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

@media (max-width: 600px) {
  .container {
    padding-inline: 20px;
  }

  .topbar-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .topbar-notice {
    font-size: 0.6875rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@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;
  }

  .site-nav,
  .nav-toggle .toggle-bar {
    transition: none;
  }

  .status-dot::before {
    animation: none;
  }

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