:root {
  --bg: #07111f; --card: rgba(255,255,255,0.06); --line: rgba(255,255,255,0.12);
  --text: #eef4ff; --muted: #a8b6cf; --brand: #7cc4ff; --brand2: #4c89ff; --accent: #8df1d1;
  --shadow: 0 20px 60px rgba(0,0,0,0.28); --radius: 22px; --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif; color: var(--text);
  background: radial-gradient(circle at 20% 0%, rgba(76,137,255,0.22), transparent 28%), radial-gradient(circle at 80% 10%, rgba(141,241,209,0.16), transparent 24%), linear-gradient(180deg, var(--bg), #050c18 100%);
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
.wrap { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.topbar { position: sticky; top: 0; z-index: 20; backdrop-filter: blur(14px); background: rgba(4,12,24,0.68); border-bottom: 1px solid rgba(255,255,255,0.06); }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; gap: 18px; }
.logo { display: flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: .4px; }
.logo-mark { width: 42px; height: 42px; border-radius: 14px; background: linear-gradient(135deg, var(--brand), var(--accent)); box-shadow: 0 10px 30px rgba(124,196,255,.35); display: grid; place-items: center; color: #06213b; font-weight: 900; }
.nav-links { display: flex; gap: 22px; color: var(--muted); font-size: 14px; flex-wrap: wrap; }
.nav-cta { padding: 11px 18px; background: linear-gradient(135deg, var(--brand2), var(--brand)); color: white; border-radius: 999px; font-size: 14px; font-weight: 700; box-shadow: 0 12px 32px rgba(76,137,255,.28); }
.hero { padding: 74px 0 48px; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 30px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; padding: 8px 14px; border-radius: 999px; background: rgba(124,196,255,0.09); border: 1px solid rgba(124,196,255,0.22); color: var(--brand); font-size: 13px; margin-bottom: 18px; }
h1 { margin: 0; font-size: clamp(34px, 5vw, 62px); line-height: 1.08; letter-spacing: -1.5px; }
.hero p { margin: 18px 0 0; color: var(--muted); font-size: 17px; max-width: 760px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.btn { padding: 14px 22px; border-radius: 999px; border: 1px solid transparent; font-weight: 700; font-size: 15px; display:inline-block; }
.btn-primary { background: linear-gradient(135deg, var(--brand2), var(--brand)); box-shadow: 0 16px 36px rgba(76,137,255,.25); }
.btn-secondary { border-color: rgba(255,255,255,.12); background: rgba(255,255,255,.04); color: var(--text); }
.hero-card { background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04)); border: 1px solid rgba(255,255,255,0.12); border-radius: 28px; padding: 22px; box-shadow: var(--shadow); }
.stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 18px; }
.stat { padding: 16px; border-radius: 18px; background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08); }
.stat strong { display: block; font-size: 24px; margin-bottom: 5px; }
.section { padding: 30px 0 70px; }
.section-title { font-size: clamp(26px, 3vw, 40px); margin: 0 0 10px; }
.section-desc { margin: 0 0 28px; color: var(--muted); max-width: 760px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { padding: 24px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow); }
.card h3 { margin: 0 0 12px; font-size: 20px; }
.card p, .card li { color: var(--muted); font-size: 15px; }
.card ul { padding-left: 18px; margin: 12px 0 0; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.quote { padding: 30px; border-radius: 28px; background: linear-gradient(135deg, rgba(76,137,255,.14), rgba(141,241,209,.08)); border: 1px solid rgba(255,255,255,.12); font-size: 18px; color: #dce8ff; }
.quote strong { display: block; font-size: 28px; margin-bottom: 8px; color: white; }
.badges { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.badge { padding: 10px 14px; border-radius: 999px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1); color: #d8e4f8; font-size: 14px; }
.contact { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; align-items: stretch; }
.contact-item { padding: 14px 0; border-bottom: 1px dashed rgba(255,255,255,.1); color: var(--muted); }
.contact-item:last-child { border-bottom: 0; }
footer { padding: 26px 0 40px; color: #8da0bf; font-size: 14px; }
@media (max-width: 960px) {
  .hero-grid,.contact,.split,.grid-3 { grid-template-columns: 1fr; }
  .nav { flex-direction: column; align-items: stretch; }
  .logo { justify-content: center; }
  .nav-links { gap: 10px; justify-content: center; font-size: 13px; }
  .nav-cta { align-self: center; }
  .hero { padding: 48px 0 28px; }
  h1 { font-size: clamp(30px, 9vw, 46px); }
  .hero p,.section-desc,.card p,.card li,.contact-item { font-size: 14px; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
  .hero-card,.card,.quote { border-radius: 20px; }
  .section { padding: 22px 0 48px; }
}
@media (max-width: 640px) {
  .wrap { width: min(100% - 20px, var(--max)); }
  .topbar { position: static; }
  .nav { padding: 12px 0; gap: 12px; }
  .logo-mark { width: 36px; height: 36px; border-radius: 12px; font-size: 13px; }
  .nav-links { display: grid; grid-template-columns: repeat(2, 1fr); width: 100%; text-align: center; }
  .nav-links a { padding: 10px 8px; border: 1px solid rgba(255,255,255,.08); border-radius: 12px; background: rgba(255,255,255,.03); }
  .eyebrow { font-size: 12px; padding: 7px 12px; }
  h1 { letter-spacing: -.6px; line-height: 1.15; }
  .hero-card { padding: 18px; }
  .stat-grid { grid-template-columns: 1fr; }
  .stat strong { font-size: 20px; }
  .section-title { font-size: 24px; }
  .card { padding: 18px; }
  .quote { padding: 22px; font-size: 16px; }
  .quote strong { font-size: 22px; }
  .badges { gap: 10px; }
  .badge { width: 100%; text-align: center; }
  footer { padding: 18px 0 28px; text-align: center; }
}