:root {
  --bg: #0b1020;
  --bg-soft: #11182d;
  --card: rgba(22, 31, 56, 0.82);
  --card-strong: rgba(18, 25, 46, 0.96);
  --text: #f8fafc;
  --muted: #a8b3cf;
  --line: rgba(255,255,255,0.08);
  --primary: #3b82f6;
  --cyan: #22d3ee;
  --violet: #8b5cf6;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(34, 211, 238, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(139, 92, 246, 0.18), transparent 24%),
    linear-gradient(180deg, #070b16 0%, var(--bg) 50%, #09101f 100%);
  color: var(--text);
}
.page-shell { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.site-header, .site-footer {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.site-header {
  position: sticky; top: 0; z-index: 20; padding: 18px 0;
  backdrop-filter: blur(14px);
  background: rgba(11, 16, 32, 0.72);
}
.brand { font-size: 18px; font-weight: 700; letter-spacing: .02em; }
.nav-links { display: flex; gap: 18px; }
.nav-links a, .site-footer p, .footer-meta span { color: var(--muted); text-decoration: none; }
.section { padding: 56px 0; }
.section-alt { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.hero { display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: center; padding-top: 44px; }
.eyebrow {
  display: inline-block; margin-bottom: 12px; color: var(--cyan); font-size: 13px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(38px, 6vw, 64px); line-height: 1.04; margin-bottom: 18px; }
h2 { font-size: clamp(28px, 3.6vw, 42px); line-height: 1.12; margin-bottom: 12px; }
h3 { font-size: 22px; margin-bottom: 10px; }
p { color: var(--muted); font-size: 17px; line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 16px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 18px;
  border-radius: 14px; border: 1px solid transparent; text-decoration: none; font-weight: 700;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--violet)); color: #fff; box-shadow: 0 18px 44px rgba(59,130,246,.35); }
.btn-secondary { background: rgba(255,255,255,.04); border-color: var(--line); color: var(--text); }
.btn-ghost { color: var(--cyan); border-color: rgba(34,211,238,.24); background: rgba(34,211,238,.06); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 16px; color: var(--muted); font-size: 14px; }
.hero-card, .info-card, .contact-card {
  position: relative; border: 1px solid var(--line); background: var(--card); border-radius: 24px; box-shadow: var(--shadow);
}
.hero-card { min-height: 380px; overflow: hidden; }
.hero-card-glow {
  position: absolute; inset: auto -40px -80px auto; width: 280px; height: 280px; border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,.45), rgba(139,92,246,.12), transparent 68%);
  filter: blur(8px);
}
.hero-card-content { position: relative; padding: 28px; }
.mini-tag {
  display: inline-flex; padding: 8px 12px; border-radius: 999px; background: rgba(34,211,238,.08); color: var(--cyan); font-size: 13px; font-weight: 700;
}
.hero-card ul { margin: 18px 0 24px; padding-left: 18px; color: var(--text); line-height: 1.9; }
.hero-highlight {
  display: grid; gap: 6px; padding: 16px 18px; border-radius: 18px; background: rgba(255,255,255,.04); border: 1px solid var(--line);
}
.section-heading { max-width: 760px; margin-bottom: 24px; }
.card-grid { display: grid; gap: 18px; }
.three-up { grid-template-columns: repeat(3, minmax(0,1fr)); }
.two-up { grid-template-columns: repeat(2, minmax(0,1fr)); }
.info-card { padding: 24px; }
.info-card p { margin-bottom: 0; font-size: 15px; }
.timeline { display: grid; gap: 16px; }
.timeline-item {
  display: grid; grid-template-columns: 64px 1fr; gap: 16px; align-items: start; padding: 20px 22px;
  border-radius: 22px; background: var(--card-strong); border: 1px solid var(--line);
}
.timeline-item span {
  display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(59,130,246,.2), rgba(139,92,246,.2)); color: var(--text); font-weight: 800;
}
.contact-card { padding: 28px; display: grid; gap: 18px; background: linear-gradient(180deg, rgba(17,24,45,.96), rgba(13,19,35,.96)); }
.contact-details { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.contact-details div { padding: 18px; border-radius: 18px; background: rgba(255,255,255,.04); border: 1px solid var(--line); }
.contact-details label { display: block; margin-bottom: 8px; color: var(--muted); font-size: 13px; }
.contact-details strong { font-size: 20px; }
.site-footer { padding: 30px 0 40px; border-top: 1px solid var(--line); }
.footer-meta { display: grid; gap: 6px; text-align: right; }

@media (max-width: 960px) {
  .hero, .three-up, .two-up, .contact-details { grid-template-columns: 1fr; }
  .site-header, .site-footer { flex-direction: column; align-items: flex-start; }
  .footer-meta { text-align: left; }
}

@media (max-width: 640px) {
  .page-shell { width: min(100% - 24px, 1180px); }
  .section { padding: 42px 0; }
  .nav-links { gap: 12px; flex-wrap: wrap; }
  .hero-card { min-height: auto; }
  .timeline-item { grid-template-columns: 1fr; }
}