:root {
  --color-deep-night: #0B0E14;
  --color-warm-paper: #F5E6C8;
  --color-pitch-green: #00E676;
  --color-flame-red: #FF1744;
  --color-gold: #FFD700;
  --color-white: #FFFFFF;
  --color-dark-gray: #2C2F36;
  --color-deep-gray: #1A1D24;
  --font-heading: Impact, 'Stencil', sans-serif;
  --font-body: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-data: 'Courier New', monospace;
  --header-height: 72px;
  --max-width: 1280px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s ease;
  --shadow-card: 0 4px 20px rgba(0,0,0,0.4);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--color-deep-night);
  color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

::selection {
  background: var(--color-pitch-green);
  color: var(--color-deep-night);
}

.skip-link {
  position: absolute;
  top: -999px;
  left: var(--spacing-md);
  z-index: 1000;
  background: var(--color-pitch-green);
  color: var(--color-deep-night);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: var(--spacing-sm);
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-pitch-green), var(--color-flame-red));
  z-index: 1001;
  pointer-events: none;
  transition: width 0.1s linear;
}
@media (prefers-reduced-motion: reduce) {
  .progress-bar {
    display: none;
  }
}

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

.site-header {
  position: fixed;
  top: 3px;
  left: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(180deg, rgba(11,14,20,0.95) 0%, rgba(11,14,20,0.85) 60%, rgba(11,14,20,0.7) 100%);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  height: var(--header-height);
  border-bottom: 1px solid rgba(0,230,118,0.15);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-header__brand {
  text-decoration: none;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.brand-text {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--color-pitch-green) 40%, var(--color-gold) 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(0,230,118,0.3);
  line-height: 1.2;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  z-index: 1002;
}
.toggle-bar {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}
[data-open] .toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
[data-open] .toggle-bar:nth-child(2) {
  opacity: 0;
}
[data-open] .toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-header__nav {
  display: flex;
  align-items: center;
}
.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
}
.nav-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-white);
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  position: relative;
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
  letter-spacing: 0.5px;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-flame-red);
  border-radius: 1px;
  transition: width var(--transition-base), box-shadow var(--transition-base);
}
.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-flame-red);
  text-shadow: 0 0 12px rgba(255,23,68,0.5);
}
.nav-link:hover::after,
.nav-link:focus-visible::after {
  width: 70%;
  box-shadow: 0 0 12px var(--color-flame-red);
}
.nav-link[aria-current="page"] {
  color: var(--color-pitch-green);
  font-weight: 700;
}
.nav-link[aria-current="page"]::after {
  width: 70%;
  background: var(--color-pitch-green);
  box-shadow: 0 0 12px rgba(0,230,118,0.5);
}

@media (max-width: 768px) {
  .site-header__toggle {
    display: flex;
  }
  .site-header__nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: rgba(11,14,20,0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 1001;
  }
  .site-header__nav[data-open] {
    transform: translateX(0);
  }
  .nav-list {
    flex-direction: column;
    gap: var(--spacing-lg);
    text-align: center;
  }
  .nav-link {
    font-size: 1.4rem;
    padding: var(--spacing-md) var(--spacing-lg);
  }
  .nav-link::after {
    bottom: 0;
  }
}

.site-footer {
  background: var(--color-deep-night);
  border-top: 1px solid rgba(0,230,118,0.12);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-xl);
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-flame-red), var(--color-pitch-green), transparent);
  opacity: 0.5;
}
.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl) var(--spacing-lg);
}
.site-footer__brand-block {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.site-footer__brand {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--color-gold);
  letter-spacing: 2px;
  text-shadow: 0 0 20px rgba(255,215,0,0.2);
}
.site-footer__tagline {
  font-size: 0.85rem;
  color: var(--color-warm-paper);
  opacity: 0.7;
  line-height: 1.5;
}
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm) var(--spacing-lg);
  align-items: center;
  align-content: flex-start;
}
.footer-link {
  font-size: 0.85rem;
  color: var(--color-warm-paper);
  text-decoration: none;
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
  padding: var(--spacing-xs) 0;
}
.footer-link:hover,
.footer-link:focus-visible {
  color: var(--color-pitch-green);
  text-shadow: 0 0 8px rgba(0,230,118,0.3);
}
.footer-contact {
  opacity: 0.7;
  cursor: default;
}
.footer-contact:hover {
  color: var(--color-warm-paper);
  opacity: 0.9;
  text-shadow: none;
}
.site-footer__bottom {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(245,230,200,0.1);
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}
.site-footer__icp {
  font-size: 0.75rem;
  color: var(--color-warm-paper);
  opacity: 0.5;
}
.site-footer__address {
  font-size: 0.75rem;
  color: var(--color-warm-paper);
  opacity: 0.4;
}

@media (max-width: 768px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  .site-footer__links {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  .site-footer__bottom {
    flex-direction: column;
    gap: var(--spacing-xs);
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-md);
  border: none;
  background: var(--color-pitch-green);
  color: var(--color-deep-night);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 0.5px;
}
.btn:hover,
.btn:focus-visible {
  filter: brightness(1.15);
  box-shadow: 0 0 24px rgba(0,230,118,0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  border: 2px solid var(--color-flame-red);
  color: var(--color-flame-red);
}
.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: var(--color-flame-red);
  color: var(--color-white);
  box-shadow: 0 0 24px rgba(255,23,68,0.3);
  filter: none;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  font-size: 0.85rem;
  color: var(--color-warm-paper);
  opacity: 0.6;
  padding: var(--spacing-md) 0;
  list-style: none;
}
.breadcrumb li + li::before {
  content: '>';
  margin-right: var(--spacing-xs);
  color: var(--color-pitch-green);
  opacity: 0.5;
}
.breadcrumb a {
  color: var(--color-warm-paper);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.breadcrumb a:hover {
  color: var(--color-pitch-green);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--color-white);
  display: flex;
  align-items: baseline;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}
.section-title .num {
  font-size: 3.5rem;
  color: var(--color-pitch-green);
  opacity: 0.3;
  font-family: var(--font-data);
  letter-spacing: -2px;
}

.card {
  background: var(--color-dark-gray);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  border: 1px solid rgba(255,255,255,0.06);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.data-number {
  font-family: var(--font-data);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-gold);
  text-shadow: 0 0 12px rgba(255,215,0,0.2);
}

@media (max-width: 480px) {
  :root {
    --header-height: 60px;
  }
  .container {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
  .brand-text {
    font-size: 1.5rem;
  }
  .section-title {
    font-size: 1.8rem;
    flex-wrap: wrap;
  }
  .section-title .num {
    font-size: 2.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .site-header__nav {
    transition: none;
  }
  .card:hover {
    transform: none;
  }
}