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

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

body {
  min-height: 100vh;
  font-family: 'Noto Sans SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-gray-green);
  background-color: #0a0f14;
  background-image:
    linear-gradient(rgba(45, 212, 191, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 212, 191, 0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  background-attachment: fixed;
}

:root {
  --color-bg: #0A0F14;
  --color-bg-deep: #060A0D;
  --color-green: #00B386;
  --color-green-deep: #0B7A5E;
  --color-gold: #D4AF37;
  --color-gold-pale: #F2E6C9;
  --color-gray-green: #BFE3D5;
  --color-teal: #2DD4BF;
  --color-cream: #EDF2EF;
  --color-red: #FF5C5C;
  --color-overlay: rgba(18, 63, 50, 0.8);
  --font-sans: 'Noto Sans SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Menlo, Consolas, monospace;
  --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.35);
  --transition-fast: 0.2s ease;
}

ul, ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: #edf2ef;
}

p {
  margin-bottom: 1em;
}

strong {
  color: #edf2ef;
}

:focus-visible {
  outline: 2px dashed var(--color-gold);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -100px;
  z-index: 300;
  padding: 8px 16px;
  background: var(--color-green);
  color: #fff;
  font-weight: 700;
  border-radius: 4px;
  transition: top var(--transition-fast);
}

.skip-link:focus-visible {
  top: 12px;
}

.site-container {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: 24px;
}

.page-container {
  max-width: 960px;
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding-block: 48px;
}

.section-heading {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
}

.coordinate {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  text-transform: uppercase;
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.btn-primary {
  background: var(--color-green);
  color: #fff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #00c793;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 179, 134, 0.25);
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background: rgba(212, 175, 55, 0.2);
  transform: translateY(-2px);
}

.breadcrumb {
  padding: 20px 0 8px;
  font-size: 14px;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

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

.breadcrumb-item + .breadcrumb-item::before {
  content: "·";
  color: var(--color-gold);
}

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

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

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

.panel-cut {
  position: relative;
  background: linear-gradient(145deg, rgba(11, 122, 94, 0.25), rgba(10, 15, 20, 0.9));
  padding: 28px;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
  box-shadow: var(--shadow-card);
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.data-number {
  font-family: var(--font-mono);
  font-size: 1.2em;
  font-weight: 500;
  color: var(--color-teal);
  font-variant-numeric: tabular-nums;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-red);
  box-shadow: 0 0 0 4px rgba(255, 92, 92, 0.15);
  animation: status-pulse 2s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(0.9);
  }
}

.map-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  padding: 12px 20px;
  background: var(--color-overlay);
  border-left: 3px solid var(--color-gold);
  font-size: 14px;
}

.legend-icon {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 6px;
  vertical-align: -1px;
  background: var(--color-green);
}

.figure {
  position: relative;
  overflow: hidden;
  background: var(--color-green-deep);
}

.figure-ratio-16-9 {
  aspect-ratio: 16 / 9;
}

.figure-ratio-4-3 {
  aspect-ratio: 4 / 3;
}

.figure-ratio-21-9 {
  aspect-ratio: 21 / 9;
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: calc(var(--scroll-progress, 0) * 1%);
  background: linear-gradient(90deg, var(--color-green), var(--color-teal) 60%, var(--color-gold));
  box-shadow: 0 0 8px rgba(0, 179, 134, 0.4);
  z-index: 1000;
  pointer-events: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--color-bg);
}

.header-upper {
  background: linear-gradient(90deg, var(--color-green-deep) 0%, rgba(11, 122, 94, 0.2) 40%, transparent 80%);
  border-bottom: 1px solid rgba(212, 175, 55, 0.3);
}

.header-upper-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 32px;
  font-size: 12px;
  color: var(--color-gray-green);
  letter-spacing: 0.06em;
}

.header-tagline::before {
  content: "◢";
  color: var(--color-gold);
  margin-right: 8px;
  font-size: 10px;
}

.header-icp {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-gold-pale);
}

.header-main {
  border-bottom: 1px solid rgba(0, 179, 134, 0.25);
  background:
    linear-gradient(rgba(45, 212, 191, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 212, 191, 0.03) 1px, transparent 1px),
    linear-gradient(180deg, rgba(0, 179, 134, 0.06) 0%, transparent 40%);
  background-size: 24px 24px, 24px 24px, auto;
}

.header-main-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--color-green) 0%, var(--color-green-deep) 100%);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.04em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

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

.brand-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--color-cream);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--color-teal);
  text-transform: uppercase;
}

.primary-nav {
  margin-left: auto;
}

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

.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-gray-green);
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-gold);
  opacity: 0.75;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: var(--color-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-cream);
  background: rgba(0, 179, 134, 0.08);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  transform: scaleX(1);
}

.nav-link[aria-current="page"] {
  color: var(--color-teal);
  font-weight: 700;
}

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--color-gold);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  background: transparent;
  border: 1px solid rgba(0, 179, 134, 0.35);
  padding: 8px;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.nav-toggle:hover {
  background: rgba(0, 179, 134, 0.1);
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-green);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-green);
}

.nav-toggle[data-open] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[data-open] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[data-open] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  position: relative;
  margin-top: 64px;
  border-top: 1px solid rgba(212, 175, 55, 0.4);
  background:
    linear-gradient(rgba(45, 212, 191, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 212, 191, 0.02) 1px, transparent 1px),
    var(--color-bg-deep);
  background-size: 32px 32px, 32px 32px, auto;
}

.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--color-green) 0%, var(--color-gold) 50%, transparent 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  padding-block: 48px 32px;
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.footer-brand .brand-name {
  color: var(--color-gold-pale);
}

.footer-tagline {
  max-width: 280px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-gray-green);
  margin-bottom: 0;
}

.footer-heading {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  font-size: 15px;
  color: var(--color-gray-green);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--color-teal);
  padding-left: 4px;
}

.footer-contact p {
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-gray-green);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(6, 10, 13, 0.6);
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding-block: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-gray-green);
}

@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;
  }

  .status-dot {
    animation: none;
  }

  .scroll-progress {
    display: none;
  }
}

@media (max-width: 1024px) {
  .nav-link {
    padding: 10px 8px;
    font-size: 14px;
  }

  .header-main-inner {
    gap: 16px;
  }

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

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

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

  .page-container {
    padding-inline: 16px;
  }

  .section {
    padding-block: 32px;
  }

  .section-heading {
    flex-wrap: wrap;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

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

  .brand-sub {
    font-size: 10px;
  }

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

  .nav-toggle {
    display: flex;
  }

  .primary-nav {
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    background: rgba(10, 15, 20, 0.98);
    border-bottom: 1px solid var(--color-green-deep);
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.5);
    display: none;
    margin-left: 0;
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    gap: 0;
  }

  .nav-link {
    display: flex;
    padding: 14px 16px;
    font-size: 16px;
  }

  .nav-link::after {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .footer-bottom-inner {
    flex-direction: column;
    gap: 6px;
  }
}