:root {
  --bg: #050711;
  --bg-soft: #0b1022;
  --panel: rgba(14, 22, 48, .78);
  --panel-strong: rgba(18, 29, 68, .92);
  --line: rgba(109, 202, 255, .22);
  --text: #f3f7ff;
  --muted: #aab8d8;
  --blue: #2ad9ff;
  --violet: #8b5cff;
  --cyan: #65fff2;
  --pink: #ff6ff0;
  --shadow: 0 24px 70px rgba(20, 95, 255, .22);
  --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(42, 217, 255, .22), transparent 32rem),
    radial-gradient(circle at 80% 0%, rgba(139, 92, 255, .20), transparent 30rem),
    linear-gradient(180deg, #050711 0%, #080b18 48%, #050711 100%);
  line-height: 1.72;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.85), rgba(0,0,0,.18));
  z-index: -1;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px clamp(18px, 5vw, 70px);
  background: rgba(5, 7, 17, .78);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(101, 255, 242, .12);
}
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark, .footer-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 54px;
  height: 42px;
  padding: 0 12px;
  border: 1px solid rgba(42,217,255,.55);
  border-radius: 16px;
  color: #fff;
  font-weight: 800;
  letter-spacing: .06em;
  background: linear-gradient(135deg, rgba(42,217,255,.25), rgba(139,92,255,.28));
  box-shadow: 0 0 28px rgba(42,217,255,.2);
}
.brand-text { color: var(--muted); font-size: 14px; white-space: nowrap; }
.main-nav { display: flex; gap: 8px; align-items: center; }
.main-nav a {
  padding: 10px 12px;
  color: #cbd7f5;
  border-radius: 999px;
  font-size: 14px;
  border: 1px solid transparent;
}
.main-nav a:hover, .main-nav a.active {
  color: #fff;
  border-color: rgba(42,217,255,.35);
  background: rgba(42,217,255,.09);
}
.nav-toggle { display: none; }
.hero, .page-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(56px, 8vw, 100px) clamp(18px, 5vw, 70px) clamp(34px, 5vw, 70px);
}
.page-hero { grid-template-columns: minmax(0, .85fr) minmax(300px, .75fr); padding-bottom: 48px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  color: var(--cyan);
  border: 1px solid rgba(101,255,242,.28);
  border-radius: 999px;
  background: rgba(101,255,242,.06);
  font-size: 13px;
}
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 16px var(--cyan); }
h1, h2, h3 { margin: 0 0 16px; line-height: 1.16; }
h1 { font-size: clamp(38px, 7vw, 82px); letter-spacing: -0.04em; }
h2 { font-size: clamp(28px, 4.6vw, 54px); letter-spacing: -0.03em; }
h3 { font-size: 22px; }
.gradient-text { background: linear-gradient(90deg, #fff, var(--blue), var(--violet)); -webkit-background-clip: text; color: transparent; }
.lead { color: #c7d4f2; font-size: clamp(17px, 2vw, 21px); max-width: 760px; }
.hero-actions, .section-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.06);
  color: #fff;
  transition: transform .2s ease, box-shadow .2s ease, border .2s ease;
}
.btn:hover { transform: translateY(-2px); border-color: rgba(42,217,255,.45); box-shadow: 0 14px 30px rgba(42,217,255,.16); }
.btn.primary { background: linear-gradient(135deg, rgba(42,217,255,.95), rgba(139,92,255,.92)); border: 0; color: #04111f; font-weight: 800; }
.btn.ghost { color: var(--cyan); }
.hero-visual, .page-visual {
  position: relative;
  border: 1px solid rgba(42,217,255,.2);
  border-radius: 32px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(42,217,255,.1), rgba(139,92,255,.08));
  box-shadow: var(--shadow);
}
.hero-visual::after, .page-visual::after {
  content: "";
  position: absolute;
  inset: 18px -12px -12px 18px;
  border-radius: 32px;
  border: 1px solid rgba(139,92,255,.18);
  z-index: -1;
}
.hero-visual img, .page-visual img { border-radius: 22px; width: 100%; }
.kpi-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 30px; }
.kpi {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,.045);
}
.kpi strong { display: block; font-size: 24px; color: var(--cyan); }
.kpi span { color: var(--muted); font-size: 13px; }
.section { padding: clamp(46px, 7vw, 86px) clamp(18px, 5vw, 70px); }
.section-head { max-width: 840px; margin-bottom: 30px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { color: var(--muted); font-size: 17px; margin: 0; }
.grid { display: grid; gap: 20px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid rgba(101,255,242,.14);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18,29,68,.72), rgba(8,13,30,.72));
  box-shadow: 0 18px 50px rgba(0,0,0,.18);
}
.card::before {
  content: "";
  position: absolute;
  inset: -80px -120px auto auto;
  width: 210px;
  height: 210px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(42,217,255,.18), transparent 65%);
}
.card > * { position: relative; }
.card p { color: var(--muted); margin: 0 0 14px; }
.icon {
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border-radius: 18px;
  background: rgba(42,217,255,.1);
  border: 1px solid rgba(42,217,255,.24);
  color: var(--cyan);
  font-size: 24px;
}
.feature-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 10px; }
.feature-list li { color: #d7e2ff; padding-left: 28px; position: relative; }
.feature-list li::before { content: "✦"; position: absolute; left: 0; color: var(--cyan); }
.split {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1fr);
  gap: 30px;
  align-items: center;
}
.panel {
  border: 1px solid rgba(42,217,255,.18);
  border-radius: 30px;
  background: var(--panel);
  padding: clamp(22px, 4vw, 38px);
  box-shadow: var(--shadow);
}
.panel img { border-radius: 20px; }
.band {
  margin: 0 clamp(18px, 5vw, 70px);
  border: 1px solid rgba(101,255,242,.16);
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(42,217,255,.14), rgba(139,92,255,.12));
  padding: clamp(28px, 5vw, 54px);
  overflow: hidden;
}
.band p { color: #d9e6ff; max-width: 900px; }
.timeline { display: grid; gap: 14px; counter-reset: step; }
.timeline-item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 20px;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,.1);
  background: rgba(255,255,255,.045);
}
.timeline-item::before {
  counter-increment: step;
  content: "0" counter(step);
  width: 52px;
  height: 52px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  border: 1px solid rgba(101,255,242,.28);
  background: rgba(101,255,242,.08);
  font-weight: 800;
}
.badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.badge { padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); color: #dfe8ff; font-size: 13px; }
.data-card { display: grid; gap: 14px; }
.data-bar { height: 12px; border-radius: 999px; background: rgba(255,255,255,.08); overflow: hidden; }
.data-bar span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--blue), var(--violet)); }
.data-bar.w-74 span { width: 74%; }
.data-bar.w-68 span { width: 68%; }
.data-bar.w-82 span { width: 82%; }
.video-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.video-card {
  overflow: hidden;
  border-radius: 26px;
  border: 1px solid rgba(42,217,255,.16);
  background: rgba(10, 17, 40, .86);
}
.video-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.video-card .video-body { padding: 20px; }
.video-card p { color: var(--muted); margin: 0; }
.faq { display: grid; gap: 12px; }
details {
  border: 1px solid rgba(101,255,242,.15);
  border-radius: 20px;
  background: rgba(255,255,255,.045);
  padding: 18px 20px;
}
summary { cursor: pointer; font-weight: 700; color: #fff; }
details p { color: var(--muted); margin: 12px 0 0; }
.form {
  display: grid;
  gap: 14px;
}
.form label { display: grid; gap: 8px; color: #dce7ff; }
.form input, .form textarea, .form select {
  width: 100%;
  border: 1px solid rgba(101,255,242,.18);
  border-radius: 16px;
  padding: 13px 14px;
  color: #fff;
  background: rgba(5,7,17,.72);
  outline: none;
}
.form textarea { min-height: 132px; resize: vertical; }
.form input:focus, .form textarea:focus, .form select:focus { border-color: rgba(42,217,255,.55); box-shadow: 0 0 0 4px rgba(42,217,255,.08); }
.form-note { color: var(--muted); font-size: 14px; }
.site-footer {
  margin-top: 50px;
  padding: 44px clamp(18px, 5vw, 70px) 24px;
  border-top: 1px solid rgba(101,255,242,.12);
  background: rgba(2,4,10,.62);
}
.footer-grid { display: grid; grid-template-columns: 1.25fr .9fr 1fr; gap: 24px; }
.site-footer p, .site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--cyan); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.08); color: #8796ba; font-size: 14px; }
.reveal { opacity: 0; transform: translateY(20px); transition: .55s ease; }
.reveal.show { opacity: 1; transform: translateY(0); }
@media (max-width: 1120px) {
  .main-nav { position: fixed; top: 74px; left: 18px; right: 18px; display: none; flex-direction: column; padding: 18px; background: rgba(7,10,24,.96); border: 1px solid rgba(101,255,242,.18); border-radius: 22px; box-shadow: var(--shadow); }
  .main-nav.open { display: flex; }
  .main-nav a { width: 100%; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 14px; border: 1px solid rgba(101,255,242,.22); background: rgba(255,255,255,.05); color: #fff; font-size: 20px; }
  .hero, .page-hero, .split { grid-template-columns: 1fr; }
  .grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .site-header { padding: 12px 16px; }
  .brand-text { display: none; }
  .hero, .page-hero, .section { padding-left: 16px; padding-right: 16px; }
  .band { margin-left: 16px; margin-right: 16px; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4, .video-grid, .footer-grid, .kpi-row { grid-template-columns: 1fr; }
  .footer-bottom { display: grid; }
  h1 { font-size: 40px; }
}