@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  color-scheme: light;
  --ink: #020617;
  --panel: rgba(15, 23, 42, 0.72);
  --line: rgba(148, 163, 184, 0.22);
  --teal: #5eead4;
  --amber: #f59e0b;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Plus Jakarta Sans', 'Noto Sans SC', system-ui, sans-serif;
  background: #f8fafc;
}

html[lang='zh-CN'] body {
  font-family: 'Plus Jakarta Sans', 'Noto Sans SC', system-ui, sans-serif;
}

html[lang='en'] body {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
}

.hero-grid {
  background:
    radial-gradient(circle at 16% 18%, rgba(45, 212, 191, 0.22), transparent 30%),
    radial-gradient(circle at 78% 12%, rgba(245, 158, 11, 0.16), transparent 26%),
    linear-gradient(135deg, #061117 0%, #020617 52%, #08111f 100%);
}

.hero-grid::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: '';
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.88), transparent 92%);
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.72;
}

.glass-panel {
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.74), rgba(15, 23, 42, 0.42));
  box-shadow: 0 24px 90px rgba(2, 6, 23, 0.26);
  backdrop-filter: blur(22px);
}

.soft-card {
  border: 1px solid rgba(148, 163, 184, 0.22);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 60px rgba(15, 23, 42, 0.07);
}

.dark-card {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.055);
}

.lang-link[aria-current='page'] {
  background: #5eead4;
  color: #020617;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 620ms ease,
    transform 620ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-canvas {
    display: none;
  }

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