:root {
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --text: #18202a;
  --muted: #5d6a79;
  --line: #dfe7f0;
  --primary: #0b5ed7;
  --primary-dark: #0848a6;
  --accent: #14a3a8;
  --card: #ffffff;
  --shadow: 0 20px 60px rgba(18, 38, 63, 0.12);
  --radius: 20px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(223, 231, 240, 0.85);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 74px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: .01em; }
.brand img { width: 42px; height: 42px; }
.nav { display: flex; align-items: center; gap: 28px; font-size: 15px; color: var(--muted); }
.nav a:hover { color: var(--primary); }
.nav-toggle { display: none; border: 0; background: var(--bg-soft); border-radius: 10px; padding: 8px 10px; font-size: 20px; }
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 15% 20%, rgba(20, 163, 168, 0.14), transparent 34%),
    radial-gradient(circle at 90% 15%, rgba(11, 94, 215, 0.16), transparent 34%),
    linear-gradient(135deg, #f8fbff 0%, #eef5ff 100%);
  padding: 92px 0;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 52px; align-items: center; }
.eyebrow, .section-kicker { color: var(--primary); text-transform: uppercase; letter-spacing: .16em; font-size: 13px; font-weight: 800; margin: 0 0 14px; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(38px, 6vw, 66px); line-height: 1.06; margin-bottom: 24px; letter-spacing: -0.04em; }
h2 { font-size: clamp(28px, 4vw, 42px); line-height: 1.18; margin-bottom: 16px; letter-spacing: -0.02em; }
h3 { font-size: 22px; line-height: 1.25; margin-bottom: 12px; }
.lead { font-size: 20px; color: var(--muted); margin-bottom: 32px; }
.lead.small { font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 30px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border-radius: 999px; font-weight: 700; border: 1px solid transparent; transition: all .2s ease; }
.btn.primary { background: var(--primary); color: #fff; box-shadow: 0 12px 28px rgba(11, 94, 215, .25); }
.btn.primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn.ghost { border-color: var(--line); background: #fff; color: var(--text); }
.btn.ghost:hover { border-color: var(--primary); color: var(--primary); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-tags span { padding: 8px 12px; background: rgba(255,255,255,.75); border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 13px; }
.hero-card { background: rgba(255,255,255,.82); border: 1px solid rgba(255,255,255,.9); border-radius: 28px; box-shadow: var(--shadow); padding: 34px; }
.hero-card .chip { display: inline-flex; color: #fff; background: linear-gradient(135deg, var(--primary), var(--accent)); border-radius: 999px; padding: 7px 12px; font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 22px; }
.hero-card ul { margin: 22px 0 0; padding-left: 18px; color: var(--muted); }
.hero-card li { margin: 10px 0; }
.section { padding: 86px 0; }
.section.muted { background: var(--bg-soft); }
.two-col { display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; }
.text-block p { font-size: 18px; color: var(--muted); }
.section-head { max-width: 780px; margin-bottom: 34px; }
.section-head p { color: var(--muted); font-size: 18px; }
.section-head.compact { margin-bottom: 30px; }
.cards { display: grid; gap: 22px; }
.solution-cards { grid-template-columns: repeat(3, 1fr); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; min-height: 238px; transition: transform .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card p { color: var(--muted); margin-bottom: 0; }
.capability-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.capability-item { display: grid; grid-template-columns: 180px 1fr; gap: 18px; align-items: start; border: 1px solid var(--line); border-radius: 18px; padding: 22px; background: #fff; }
.capability-item strong { color: var(--primary-dark); }
.capability-item span { color: var(--muted); }
.timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.step { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 24px; }
.step span { display: inline-flex; width: 42px; height: 42px; align-items: center; justify-content: center; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 800; margin-bottom: 18px; }
.step strong { display: block; font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--muted); margin-bottom: 0; font-size: 15px; }
.contact-section { background: linear-gradient(135deg, #10233e, #0a4c9a); color: #fff; }
.contact-section .section-kicker, .contact-section .lead { color: rgba(255,255,255,.72); }
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; align-items: start; }
.contact-card { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); border-radius: 24px; padding: 32px; }
dl { margin: 0; }
dl div { display: grid; grid-template-columns: 120px 1fr; gap: 18px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.16); }
dl div:last-child { border-bottom: 0; }
dt { color: rgba(255,255,255,.62); }
dd { margin: 0; font-weight: 700; }
.note { color: rgba(255,255,255,.7); font-size: 14px; margin: 18px 0 0; }
.site-footer { background: #071426; color: rgba(255,255,255,.68); padding: 24px 0; font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer-inner p { margin: 0; }
.footer-inner a:hover { color: #fff; }
.separator { margin: 0 8px; color: rgba(255,255,255,.35); }
@media (max-width: 920px) {
  .nav-toggle { display: inline-flex; }
  .nav { display: none; position: absolute; left: 20px; right: 20px; top: 74px; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 16px; flex-direction: column; align-items: flex-start; gap: 12px; box-shadow: var(--shadow); }
  .nav.is-open { display: flex; }
  .hero-grid, .two-col, .contact-grid { grid-template-columns: 1fr; }
  .hero { padding: 70px 0; }
  .solution-cards { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .capability-item { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 620px) {
  .container { width: min(100% - 28px, 1160px); }
  .brand span { font-size: 14px; }
  .brand img { width: 36px; height: 36px; }
  .hero, .section { padding: 56px 0; }
  .lead { font-size: 17px; }
  .solution-cards, .capability-grid, .timeline { grid-template-columns: 1fr; }
  .card { min-height: auto; }
  dl div { grid-template-columns: 1fr; gap: 4px; }
  .footer-inner { flex-direction: column; }
}