:root {
  --bg: #05070d;
  --panel: #0c1018;
  --panel-2: #121826;
  --text: #f5f7fb;
  --muted: #a8b0c1;
  --line: rgba(255,255,255,.12);
  --blue: #002fa7;
  --blue-2: #2e6cff;
  --green: #adff2f;
  --white: #ffffff;
  --shadow: 0 24px 80px rgba(0,0,0,.35);
  --radius: 28px;
  --radius-sm: 18px;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 8%, rgba(46,108,255,.3), transparent 26rem),
    radial-gradient(circle at 90% 12%, rgba(173,255,47,.12), transparent 22rem),
    linear-gradient(180deg, #05070d 0%, #090b12 58%, #05070d 100%);
  line-height: 1.7;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: rgba(5, 7, 13, .76);
  backdrop-filter: blur(16px);
}
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 18px;
  background: linear-gradient(135deg, var(--blue), #0f172a 60%, rgba(173,255,47,.25));
  color: var(--white);
  font-weight: 900;
  letter-spacing: -.05em;
}
.brand-text { font-weight: 700; white-space: nowrap; }
.site-nav { display: flex; gap: 8px; align-items: center; }
.site-nav a {
  padding: 10px 14px;
  color: var(--muted);
  border: 1px solid transparent;
  border-radius: 999px;
  transition: .2s ease;
}
.site-nav a:hover, .site-nav a.active {
  color: var(--white);
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.14);
}
.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  color: var(--white);
  background: rgba(255,255,255,.05);
  border-radius: 999px;
  padding: 10px 14px;
}
main { overflow: hidden; }
.section, .hero, .page-hero { width: min(var(--max), calc(100% - 36px)); margin: 0 auto; }
.hero {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: clamp(28px, 5vw, 76px);
  align-items: center;
  padding: clamp(62px, 9vw, 120px) 0 clamp(48px, 7vw, 88px);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  margin: 0 0 18px;
  padding: 8px 12px;
  border: 1px solid rgba(173,255,47,.32);
  color: var(--green);
  background: rgba(173,255,47,.07);
  border-radius: 999px;
  font-size: 14px;
}
.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 18px var(--green);
}
h1, h2, h3 { line-height: 1.15; margin: 0; }
h1 { font-size: clamp(42px, 6vw, 82px); letter-spacing: -.07em; }
h2 { font-size: clamp(30px, 4vw, 52px); letter-spacing: -.05em; }
h3 { font-size: clamp(20px, 2.4vw, 28px); }
p { color: var(--muted); margin: 0; }
.lead { margin: 22px 0 0; font-size: clamp(17px, 2vw, 21px); color: #d9dfec; }
.hero-actions, .actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--white);
  background: rgba(255,255,255,.06);
  font-weight: 700;
  transition: .2s ease;
}
.btn.primary { background: var(--blue-2); border-color: var(--blue-2); box-shadow: 0 16px 48px rgba(46,108,255,.3); }
.btn:hover { transform: translateY(-2px); border-color: rgba(173,255,47,.52); }
.hero-card, .panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-card { padding: 18px; position: relative; }
.hero-card::after {
  content: "";
  position: absolute;
  inset: auto -40px -46px auto;
  width: 170px;
  height: 170px;
  background: radial-gradient(circle, rgba(173,255,47,.35), transparent 70%);
  pointer-events: none;
}
.hero-card img { border-radius: 22px; }
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}
.stat {
  padding: 16px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 18px;
  background: rgba(0,0,0,.18);
}
.stat strong { display: block; font-size: 24px; color: var(--white); }
.stat span { color: var(--muted); font-size: 13px; }
.section { padding: clamp(48px, 8vw, 96px) 0; }
.section-head { display: grid; grid-template-columns: minmax(0, .8fr) minmax(260px, .54fr); gap: 24px; align-items: end; margin-bottom: 34px; }
.section-head p { font-size: 17px; }
.grid { display: grid; gap: 18px; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card {
  position: relative;
  min-height: 100%;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.055);
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(46,108,255,.16), transparent 42%);
  opacity: 0;
  transition: .2s ease;
}
.card:hover::before { opacity: 1; }
.card > * { position: relative; }
.card-icon { width: 74px; height: 74px; margin-bottom: 20px; }
.card p, .work-card p { margin-top: 12px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.tag {
  display: inline-flex;
  padding: 6px 10px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  color: #d5dbea;
  background: rgba(255,255,255,.04);
  font-size: 13px;
}
.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 28px;
  align-items: center;
}
.visual-panel { padding: 18px; }
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 38px;
  left: 9%;
  right: 9%;
  height: 1px;
  background: linear-gradient(90deg, rgba(46,108,255,.1), var(--blue-2), rgba(173,255,47,.8));
}
.step {
  position: relative;
  padding: 78px 22px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.05);
}
.step strong {
  position: absolute;
  top: 20px;
  left: 22px;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--blue-2);
}
.work-masonry {
  columns: 3 260px;
  column-gap: 18px;
}
.work-card {
  display: inline-block;
  width: 100%;
  margin: 0 0 18px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.055);
  break-inside: avoid;
}
.work-card img { border-radius: 16px; margin-bottom: 16px; }
.feature-list { display: grid; gap: 14px; margin-top: 22px; }
.feature-list li {
  list-style: none;
  padding: 18px 18px 18px 52px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,.045);
  color: #d9dfec;
  position: relative;
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 20px rgba(173,255,47,.6);
}
.page-hero {
  padding: clamp(56px, 8vw, 96px) 0 36px;
  display: grid;
  gap: 22px;
}
.page-hero .lead { max-width: 820px; }
.service-table {
  display: grid;
  gap: 14px;
}
.service-row {
  display: grid;
  grid-template-columns: 1fr 1.5fr .8fr;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,.045);
}
.service-row strong { color: var(--white); }
.video-list { display: grid; gap: 18px; }
.video-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 18px;
  align-items: center;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.05);
}
.video-thumb { position: relative; border-radius: 18px; overflow: hidden; }
.video-thumb::after {
  content: "播放演示";
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(0,0,0,.66);
  border: 1px solid rgba(255,255,255,.2);
}
.notice {
  padding: 20px;
  border: 1px solid rgba(173,255,47,.34);
  border-radius: var(--radius-sm);
  background: rgba(173,255,47,.07);
  color: #e9f7d7;
}
.contact-card { padding: 28px; }
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 8px; color: #dfe5f4; }
.form input, .form textarea, .form select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--white);
  background: rgba(255,255,255,.055);
  padding: 13px 14px;
  font: inherit;
}
.form textarea { min-height: 150px; resize: vertical; }
.form-note { min-height: 28px; color: var(--green); }
.faq { display: grid; gap: 12px; }
.faq details {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 20px;
  background: rgba(255,255,255,.05);
}
.faq summary { cursor: pointer; font-weight: 700; }
.faq p { margin-top: 12px; }
.site-footer {
  width: min(var(--max), calc(100% - 36px));
  margin: 36px auto 0;
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
}
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 18px; }
.footer-grid strong, .footer-grid span { color: var(--white); }
.host-line { word-break: break-all; }
@media (max-width: 920px) {
  .hero, .split, .section-head { grid-template-columns: 1fr; }
  .grid.three, .grid.two, .timeline, .footer-grid { grid-template-columns: 1fr 1fr; }
  .service-row { grid-template-columns: 1fr; }
  .video-item { grid-template-columns: 180px 1fr; }
}
@media (max-width: 720px) {
  .site-header { align-items: flex-start; }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    top: 76px;
    left: 18px;
    right: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(5,7,13,.96);
  }
  .site-nav.open { display: flex; }
  .site-nav a { text-align: center; }
  h1 { font-size: clamp(38px, 13vw, 60px); }
  .stats, .grid.three, .grid.two, .timeline, .footer-grid, .video-item { grid-template-columns: 1fr; }
  .timeline::before { display: none; }
  .hero-actions, .actions { align-items: stretch; }
  .btn { width: 100%; }
  .section, .hero, .page-hero, .site-footer { width: min(100% - 28px, var(--max)); }
}