*,*::before,*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
:root {
  --clr-primary-deep-blue: #0B1A33;
  --clr-accent-orange-red: #FF4B2B;
  --clr-accent-gold: #F5A623;
  --clr-surface-dark: #1A2A44;
  --clr-surface-medium: #14203A;
  --clr-text-primary: #FFFFFF;
  --clr-text-secondary: #B0C4DE;
  --clr-text-high-contrast: #FFD700;
  --clr-border-subtle: #2E4A6E;
  --font-heading: 'Source Han Sans CN Bold','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --font-body: 'Noto Sans SC Regular','PingFang SC',system-ui,-apple-system,sans-serif;
  --font-mono: 'JetBrains Mono','Cascadia Code',monospace;
  --radius-lg: 16px;
  --radius-pill: 9999px;
  --transition-base: 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
  --container-max: 1200px;
}
body {
  font-family: var(--font-body);
  background-color: var(--clr-primary-deep-blue);
  color: var(--clr-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--clr-accent-orange-red);
  color: #fff;
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius-pill);
  z-index: 1000;
  font-weight: bold;
  text-decoration: none;
  transition: top var(--transition-base);
}
.skip-link:focus {
  top: 0.5rem;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1rem;
}
a {
  color: var(--clr-accent-gold);
  text-decoration: none;
  transition: color var(--transition-base);
}
a:hover,a:focus-visible {
  color: var(--clr-accent-orange-red);
}
img {
  max-width: 100%;
  display: block;
}
button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
  color: inherit;
}

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--clr-primary-deep-blue) 0%, #0A152A 100%);
  border-bottom: 1px solid var(--clr-border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  gap: 1rem;
}
.site-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex-shrink: 0;
}
.site-brand__name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: #fff;
  letter-spacing: 0.05em;
}
.site-brand__tagline {
  font-size: 0.75rem;
  color: var(--clr-text-secondary);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.site-brand--footer .site-brand__name {
  font-size: 1.25rem;
}
.site-brand--footer .site-brand__tagline {
  font-size: 0.7rem;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  background: transparent;
  border: 1px solid var(--clr-border-subtle);
  border-radius: 8px;
  transition: border-color var(--transition-base);
}
.nav-toggle__line {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}
[data-nav-toggle][aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
[data-nav-toggle][aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
}
[data-nav-toggle][aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.site-nav__link {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  color: var(--clr-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-base);
  position: relative;
}
.site-nav__link:hover,.site-nav__link:focus-visible {
  color: #fff;
  background: rgba(255,255,255,0.05);
}
.site-nav__link[aria-current="page"] {
  color: #fff;
  background: rgba(255,75,43,0.15);
  box-shadow: inset 0 -2px 0 var(--clr-accent-orange-red);
}
.site-nav__link--highlight {
  border: 1px solid var(--clr-accent-gold);
  color: var(--clr-accent-gold);
}
.site-nav__link--highlight:hover {
  background: var(--clr-accent-gold);
  color: var(--clr-primary-deep-blue);
}

/* Footer */
.site-footer {
  background: linear-gradient(0deg, #060D1A 0%, var(--clr-primary-deep-blue) 100%);
  border-top: 1px solid var(--clr-border-subtle);
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 2rem;
}
.footer-col__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--clr-text-secondary);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--clr-border-subtle);
}
.footer__trust {
  color: var(--clr-text-secondary);
  font-size: 0.9rem;
  margin-top: 0.5rem;
  line-height: 1.5;
}
.footer-links,.footer-contact {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.footer-links__item {
  color: var(--clr-text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-base), padding-left var(--transition-base);
}
.footer-links__item:hover {
  color: var(--clr-accent-orange-red);
  padding-left: 4px;
}
.footer-contact__item {
  color: var(--clr-text-secondary);
  font-size: 0.9rem;
}
.footer-contact__item a {
  color: var(--clr-accent-gold);
}
.footer-contact__note {
  font-size: 0.8rem;
  color: var(--clr-text-secondary);
  margin-top: 1rem;
  padding: 0.75rem;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  border-left: 3px solid var(--clr-accent-orange-red);
}
.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--clr-border-subtle);
  text-align: center;
}
.footer-copyright {
  font-size: 0.8rem;
  color: var(--clr-text-secondary);
  font-family: var(--font-mono);
}

/* Bento Grid System */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin: 2rem 0;
}
.card {
  background: var(--clr-surface-dark);
  border: 1px solid var(--clr-border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.card--featured {
  grid-column: span 2;
  grid-row: span 2;
  background: linear-gradient(135deg, var(--clr-surface-dark) 0%, #1F3456 100%);
  border-color: var(--clr-accent-orange-red);
}

/* Buttons & Pills */
.btn {
  display: inline-block;
  padding: 0.6em 1.8em;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: bold;
  text-align: center;
  letter-spacing: 0.03em;
  transition: all var(--transition-base);
  border: 2px solid transparent;
}
.btn--primary {
  background: var(--clr-accent-orange-red);
  color: #fff;
  border-color: var(--clr-accent-orange-red);
}
.btn--primary:hover {
  background: #e0301a;
  border-color: #e0301a;
  color: #fff;
  transform: scale(1.02);
}
.btn--ghost {
  background: transparent;
  color: var(--clr-text-primary);
  border-color: var(--clr-border-subtle);
}
.btn--ghost:hover {
  border-color: var(--clr-accent-gold);
  color: var(--clr-accent-gold);
}
.pill {
  display: inline-block;
  padding: 0.2em 0.8em;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: bold;
  font-family: var(--font-mono);
  background: rgba(255,75,43,0.15);
  color: var(--clr-accent-orange-red);
  border: 1px solid rgba(255,75,43,0.3);
}
.pill--gold {
  background: rgba(245,166,35,0.15);
  color: var(--clr-accent-gold);
  border-color: rgba(245,166,35,0.3);
}

/* Section Title */
.section-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: #fff;
  position: relative;
  display: inline-block;
  margin-bottom: 1.5rem;
  padding-left: 1rem;
}
.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--clr-accent-orange-red);
  transform: skewX(-15deg);
  border-radius: 2px;
}

/* Data Highlight & Animation */
.data-highlight {
  color: var(--clr-accent-gold);
  font-family: var(--font-mono);
  font-weight: bold;
  font-size: 1.2em;
}
@keyframes dataPulse {
  0%, 100% { text-shadow: 0 0 8px rgba(245,166,35,0.2); }
  50% { text-shadow: 0 0 20px rgba(245,166,35,0.6); }
}
.data-pulse {
  animation: dataPulse 1.5s ease-in-out infinite;
}

/* Reveal Animation */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Back to Top */
[data-scroll-top] {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--clr-accent-orange-red);
  color: #fff;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 99;
  box-shadow: 0 4px 20px rgba(255,75,43,0.3);
}
[data-scroll-top].visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}
[data-scroll-top]:hover {
  background: var(--clr-accent-gold);
  color: var(--clr-primary-deep-blue);
}

/* Responsive */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .card--featured {
    grid-column: span 2;
    grid-row: span 1;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-col--brand {
    grid-column: span 2;
  }
}
@media (max-width: 768px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--clr-primary-deep-blue);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 2px solid var(--clr-border-subtle);
    gap: 0.5rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  }
  .site-nav[data-open] {
    display: flex;
  }
  .site-nav__link {
    width: 100%;
    text-align: center;
    padding: 0.75rem;
  }
  .nav-toggle {
    display: flex;
  }
  .header-inner {
    position: relative;
  }
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .card--featured {
    grid-column: span 1;
    grid-row: span 1;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-col--brand {
    grid-column: span 1;
  }
  .footer-col__title {
    margin-bottom: 0.75rem;
  }
  [data-scroll-top] {
    bottom: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
  [data-scroll-top] {
    transition: none;
  }
}

/* Utility Focus */
:focus-visible {
  outline: 2px solid var(--clr-accent-orange-red);
  outline-offset: 2px;
  border-radius: 4px;
}