:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --ink: #182033;
  --muted: #647085;
  --line: #e6eaf2;
  --brand: #7762ff;
  --brand-2: #21c6a8;
  --warm: #ffb766;
  --shadow: 0 18px 45px rgba(31, 37, 68, .12);
  --radius: 26px;
}
* { 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(--ink);
  background: radial-gradient(circle at top left, #eef1ff 0, rgba(247,248,251,0) 34rem), var(--bg);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.topbar {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 15px 22px 10px;
}
.logo, .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: .03em;
}
.logo img, .footer-logo img { width: 42px; height: 42px; border-radius: 14px; box-shadow: 0 8px 20px rgba(119,98,255,.2); }
.main-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.main-nav a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
}
.main-nav a:hover, .main-nav .active { color: var(--ink); background: #f0f2ff; }
.nav-toggle { display: none; border: 0; background: var(--brand); color: white; padding: 8px 12px; border-radius: 999px; }
.search-box {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px 14px;
}
.search-box label { display: block; font-weight: 700; margin-bottom: 6px; font-size: 14px; }
.search-row { display: flex; gap: 10px; }
.search-row input {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 12px 16px;
  outline: none;
  background: #fff;
}
.search-row button, .btn, .ghost-btn {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(119,98,255,.2);
}
.ghost-btn { color: var(--brand); background: #f0f2ff; box-shadow: none; }
.search-hint { margin: 7px 0 0; color: var(--muted); font-size: 13px; }
main { overflow: hidden; }
.section, .hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: 64px 22px;
}
.hero {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 36px;
  align-items: center;
  min-height: 650px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  color: #45506a;
  background: #fff;
  border: 1px solid var(--line);
  font-weight: 700;
  font-size: 14px;
}
h1, h2, h3 { line-height: 1.2; margin: 0; }
h1 { font-size: clamp(38px, 7vw, 72px); letter-spacing: -.06em; margin: 18px 0 18px; }
h2 { font-size: clamp(28px, 4vw, 46px); letter-spacing: -.04em; }
h3 { font-size: 21px; }
p { margin: 0; }
.lead { color: var(--muted); font-size: 18px; max-width: 720px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.trust-row span { background: rgba(255,255,255,.8); border: 1px solid var(--line); border-radius: 999px; padding: 7px 12px; color: var(--muted); font-size: 14px; }
.hero-media { position: relative; }
.hero-media figure, .image-card figure {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow);
}
figcaption { color: var(--muted); font-size: 13px; margin-top: 10px; }
.hero-stats {
  position: absolute;
  left: -18px;
  bottom: 38px;
  display: grid;
  gap: 10px;
  padding: 16px;
  border-radius: 20px;
  background: rgba(255,255,255,.92);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.hero-stats strong { display: block; font-size: 22px; }
.section-title { display: flex; justify-content: space-between; gap: 18px; align-items: end; margin-bottom: 26px; }
.section-title p { color: var(--muted); max-width: 560px; }
.grid-3, .grid-4, .grid-2 { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card, .metric, .timeline-item, .faq-item, .review-card, .video-card, .data-panel {
  background: rgba(255,255,255,.92);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 12px 32px rgba(31, 37, 68, .06);
}
.card h3, .review-card h3, .faq-item h3 { margin-bottom: 10px; }
.card p, .review-card p, .faq-item p, .timeline-item p { color: var(--muted); }
.badge-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.badge-list span, .tag { border-radius: 999px; background: #f3f5fb; color: #536076; padding: 6px 10px; font-size: 13px; }
.video-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.video-card { padding: 12px; }
.video-shell { position: relative; border-radius: 22px; overflow: hidden; background: #10131e; }
.video-shell video, .video-shell img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; opacity: .92; }
.play-button {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%) scale(.95);
  width: 62px;
  height: 62px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,.8);
  background: rgba(255,255,255,.88);
  color: var(--brand);
  font-weight: 900;
  opacity: 0;
  transition: .2s ease;
  cursor: pointer;
}
.video-shell:hover .play-button, .video-shell.is-playing .play-button { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-card h3 { margin: 14px 8px 8px; }
.video-card p { margin: 0 8px; color: var(--muted); }
.video-meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 8px 4px; color: #536076; font-size: 13px; }
.story-band {
  background: linear-gradient(135deg, #ffffff, #eef1ff);
  border-block: 1px solid var(--line);
}
.metric { text-align: center; }
.metric strong { display: block; font-size: 34px; color: var(--brand); }
.product-card img { border-radius: 20px; margin-bottom: 16px; }
.breadcrumb { color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.breadcrumb a { color: var(--brand); }
.page-hero { max-width: 940px; padding-bottom: 30px; }
.timeline { display: grid; gap: 16px; }
.timeline-item { display: grid; grid-template-columns: 140px 1fr; gap: 18px; }
.timeline-item time { color: var(--brand); font-weight: 800; }
.faq-list { display: grid; gap: 14px; }
.contact-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.data-panel pre {
  overflow: auto;
  margin: 0;
  background: #111827;
  color: #e5e7eb;
  padding: 16px;
  border-radius: 18px;
  font-size: 13px;
}
.site-footer {
  margin-top: 40px;
  padding: 46px 22px 26px;
  background: #111827;
  color: #f7f8fb;
}
.footer-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 28px; }
.footer-grid p, .footer-grid a, .copyright { color: #bac3d5; }
.footer-grid h2 { font-size: 18px; margin-bottom: 12px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-logo { margin-bottom: 14px; color: #fff; }
.copyright { max-width: 1180px; margin: 30px auto 0; border-top: 1px solid rgba(255,255,255,.12); padding-top: 18px; font-size: 14px; }
@media (max-width: 900px) {
  .hero, .grid-2, .grid-3, .grid-4, .video-grid, .contact-panel, .footer-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 42px; }
  .main-nav { display: none; width: 100%; padding-top: 10px; }
  .main-nav.is-open { display: grid; }
  .topbar { flex-wrap: wrap; }
  .nav-toggle { display: inline-block; }
  .hero-stats { position: static; margin-top: 14px; }
  .section-title { display: grid; }
  .timeline-item { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .search-row { flex-direction: column; }
  .section, .hero { padding: 46px 16px; }
  .topbar, .search-box { padding-left: 16px; padding-right: 16px; }
}