:root {
  --bg: #050814;
  --bg-soft: #0a1024;
  --card: rgba(255,255,255,.08);
  --card-strong: rgba(255,255,255,.13);
  --text: #eef4ff;
  --muted: #a8b3cf;
  --primary: #39d9ff;
  --secondary: #8a5cff;
  --accent: #00ffa3;
  --line: rgba(255,255,255,.14);
  --shadow: 0 30px 100px rgba(0,0,0,.45);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 5%, rgba(57,217,255,.18), transparent 32%), radial-gradient(circle at 80% 8%, rgba(138,92,255,.24), transparent 30%), var(--bg);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.grid-bg {
  position: fixed; inset: 0; z-index: -1;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
}
.site-header { position: sticky; top: 0; z-index: 10; backdrop-filter: blur(18px); background: rgba(5,8,20,.72); border-bottom: 1px solid var(--line); }
.nav { height: 76px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .5px; }
.brand-mark { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; box-shadow: 0 0 30px rgba(57,217,255,.45); }
.nav-links { display: flex; align-items: center; gap: 28px; color: var(--muted); font-size: 15px; }
.nav-links a:hover { color: var(--text); }
.nav-cta { padding: 10px 18px; border: 1px solid rgba(57,217,255,.45); border-radius: 999px; color: var(--text)!important; background: rgba(57,217,255,.1); }
.menu-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 26px; }
.hero { display: grid; grid-template-columns: 1.05fr .95fr; gap: 58px; align-items: center; padding: 94px 0 72px; min-height: 720px; }
.eyebrow { margin: 0 0 14px; color: var(--accent); font-size: 14px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(42px, 6vw, 76px); line-height: 1.05; letter-spacing: -3px; }
h2 { margin: 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.15; letter-spacing: -1.6px; }
h3 { margin: 0 0 12px; font-size: 22px; }
.hero-desc, .section-head p, .website-section p, .cta-card p, .footer p { color: var(--muted); font-size: 18px; }
.hero-desc { max-width: 640px; margin: 26px 0 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 34px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 24px; border-radius: 999px; font-weight: 800; transition: transform .25s ease, box-shadow .25s ease; }
.btn:hover { transform: translateY(-2px); }
.btn.primary { color: #03101c; background: linear-gradient(135deg, var(--primary), var(--accent)); box-shadow: 0 16px 44px rgba(57,217,255,.3); }
.btn.secondary { border: 1px solid var(--line); color: var(--text); background: rgba(255,255,255,.06); }
.btn.large { min-height: 58px; padding: 0 30px; }
.hero-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 42px; max-width: 620px; }
.hero-metrics div { padding: 18px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.055); }
.hero-metrics strong { display: block; font-size: 30px; color: var(--primary); }
.hero-metrics span { color: var(--muted); font-size: 14px; }
.hero-panel { position: relative; min-height: 520px; border-radius: 36px; background: linear-gradient(145deg, rgba(255,255,255,.12), rgba(255,255,255,.03)); border: 1px solid var(--line); box-shadow: var(--shadow); overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(2px); opacity: .7; }
.orb-one { width: 220px; height: 220px; background: var(--primary); top: -70px; right: -50px; }
.orb-two { width: 240px; height: 240px; background: var(--secondary); bottom: -80px; left: -80px; }
.panel-card { position: absolute; border: 1px solid rgba(255,255,255,.18); border-radius: 28px; background: rgba(6,12,30,.68); backdrop-filter: blur(18px); box-shadow: 0 22px 70px rgba(0,0,0,.35); }
.main-card { left: 48px; right: 48px; top: 130px; padding: 34px; }
.main-card h2 { font-size: 42px; }
.main-card p { color: var(--muted); font-size: 17px; }
.badge { display: inline-flex; padding: 8px 12px; margin-bottom: 18px; border-radius: 999px; color: var(--accent); background: rgba(0,255,163,.12); }
.mini-card { display: grid; gap: 4px; padding: 18px 22px; min-width: 210px; }
.mini-card span { color: var(--muted); }
.top-card { top: 58px; left: 26px; }
.bottom-card { right: 28px; bottom: 58px; }
.highlight-strip { border-block: 1px solid var(--line); background: rgba(255,255,255,.055); }
.strip-content { display: flex; justify-content: space-between; gap: 18px; padding: 20px 0; color: #dce8ff; font-weight: 700; }
.section { padding: 96px 0; }
.section-head { max-width: 760px; margin-bottom: 44px; }
.section-head.centered { text-align: center; margin-inline: auto; }
.listing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.listing-card, .service-grid article, .advantage-grid div { border: 1px solid var(--line); border-radius: 28px; padding: 30px; background: var(--card); box-shadow: 0 22px 70px rgba(0,0,0,.22); }
.listing-card.featured { background: linear-gradient(145deg, rgba(57,217,255,.18), rgba(255,255,255,.06)); position: relative; overflow: hidden; }
.listing-card.ios { background: linear-gradient(145deg, rgba(138,92,255,.2), rgba(255,255,255,.06)); }
.card-icon { width: 54px; height: 54px; border-radius: 18px; display: grid; place-items: center; margin-bottom: 20px; font-size: 24px; font-weight: 900; background: rgba(57,217,255,.14); color: var(--primary); }
.card-icon.apple { background: rgba(138,92,255,.18); color: #d7c7ff; }
.listing-card p, .service-grid p, .advantage-grid p, .step p { color: var(--muted); }
ul { padding-left: 20px; margin-bottom: 0; color: #d8e4ff; }
.process-section { background: linear-gradient(180deg, rgba(10,16,36,.7), rgba(10,16,36,.25)); }
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { padding: 26px; border: 1px solid var(--line); border-radius: 24px; background: rgba(255,255,255,.05); }
.step span { display: inline-flex; margin-bottom: 18px; color: var(--primary); font-weight: 900; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.website-section { background: radial-gradient(circle at 85% 20%, rgba(57,217,255,.14), transparent 28%), rgba(255,255,255,.03); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.check-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 28px; }
.check-list span { padding: 14px 16px; border-radius: 16px; background: rgba(0,255,163,.1); border: 1px solid rgba(0,255,163,.22); }
.mock-browser { border: 1px solid var(--line); border-radius: 28px; background: rgba(255,255,255,.08); overflow: hidden; box-shadow: var(--shadow); }
.browser-bar { display: flex; gap: 8px; padding: 18px; border-bottom: 1px solid var(--line); }
.browser-bar i { width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,.38); }
.mock-content { padding: 34px; min-height: 280px; }
.mock-line { height: 18px; width: 60%; border-radius: 999px; background: rgba(255,255,255,.18); margin-bottom: 16px; }
.mock-line.wide { width: 86%; height: 28px; background: linear-gradient(90deg, rgba(57,217,255,.5), rgba(138,92,255,.5)); }
.mock-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 40px; }
.mock-cards span { height: 110px; border-radius: 18px; background: rgba(255,255,255,.12); }
.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.advantage-grid strong { font-size: 20px; }
.cta-section { padding: 40px 0 110px; }
.cta-card { display: flex; justify-content: space-between; gap: 30px; align-items: center; padding: 44px; border-radius: 34px; border: 1px solid rgba(57,217,255,.35); background: linear-gradient(135deg, rgba(57,217,255,.18), rgba(138,92,255,.18)); box-shadow: var(--shadow); }
.footer { border-top: 1px solid var(--line); background: rgba(3,6,16,.82); }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 30px; padding: 44px 0; }
.footer h4 { margin: 0 0 14px; }
.footer a { display: block; color: var(--muted); margin: 9px 0; }
.footer .brand { color: var(--text); margin-bottom: 12px; }
.copyright { text-align: center; color: var(--muted); padding: 18px; border-top: 1px solid var(--line); font-size: 14px; }
@media (max-width: 920px) {
  .menu-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 76px; left: 20px; right: 20px; padding: 20px; flex-direction: column; align-items: stretch; background: rgba(5,8,20,.96); border: 1px solid var(--line); border-radius: 20px; }
  .nav-links.open { display: flex; }
  .hero, .split { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; }
  .hero-panel { min-height: 460px; }
  .listing-grid, .timeline, .service-grid, .advantage-grid, .footer-grid { grid-template-columns: 1fr; }
  .strip-content, .cta-card { flex-direction: column; align-items: flex-start; }
  .hero-metrics { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .container { width: min(100% - 28px, 1180px); }
  h1 { letter-spacing: -1.8px; }
  .main-card { left: 20px; right: 20px; top: 116px; padding: 24px; }
  .main-card h2 { font-size: 32px; }
  .top-card, .bottom-card { position: absolute; left: 20px; right: 20px; min-width: auto; }
  .top-card { top: 30px; }
  .bottom-card { bottom: 30px; }
  .check-list, .mock-cards { grid-template-columns: 1fr; }
}