*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;
  color:#f2f7ff;
  background:
    radial-gradient(circle at 15% 15%, rgba(32,116,255,.18), transparent 30%),
    radial-gradient(circle at 85% 20%, rgba(38,143,255,.12), transparent 26%),
    linear-gradient(180deg, #04111f 0%, #030c17 100%);
}
a{text-decoration:none;color:inherit}
.container{width:min(1200px, calc(100% - 48px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:10;
  background:rgba(3,12,23,.75);
  backdrop-filter: blur(12px);
  border-bottom:1px solid rgba(86,140,208,.18);
}
.header-inner{
  height:78px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-badge{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;font-weight:700;
  background:linear-gradient(180deg,#4aa2ff,#1e74ff);
  box-shadow:0 10px 24px rgba(30,116,255,.35);
}
.brand-text{font-size:34px;font-weight:700;letter-spacing:.2px}
.nav{display:flex;gap:28px;color:#c7ddff;font-size:15px}
.nav a:hover{color:#fff}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;border-radius:999px;
  background:linear-gradient(180deg,#37a0ff,#1978ff);
  color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 12px 30px rgba(30,116,255,.28);
}
.btn:hover{transform:translateY(-1px)}
.btn-small{height:42px;padding:0 20px;font-size:14px}
.btn-ghost{
  background:transparent;border:1px solid rgba(90,151,226,.35);
  box-shadow:none;color:#d8e9ff;
}
.hero{padding:72px 0 56px}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
}
.eyebrow{
  color:#57abff;font-size:14px;font-weight:700;letter-spacing:1.6px;
  text-transform:uppercase;margin-bottom:18px;
}
.hero h1{
  margin:0;font-size:76px;line-height:1.02;font-weight:800;letter-spacing:-1.2px;
}
.hero h1 span{
  background:linear-gradient(180deg,#7bc2ff 0%, #2f8cff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-desc{
  margin:24px 0 0;max-width:620px;
  color:#b8d0ef;font-size:18px;line-height:1.95;
}
.hero-actions{display:flex;gap:14px;margin-top:28px}
.hero-points{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;
}
.hero-points span{
  padding:10px 14px;border-radius:999px;
  background:rgba(10,31,57,.76);
  border:1px solid rgba(81,133,197,.22);
  color:#d8e9ff;font-size:14px;
}
.product-card{
  position:relative;min-height:500px;display:flex;align-items:center;
}
.product-glow{
  position:absolute;inset:30px 60px 40px;
  background:radial-gradient(circle, rgba(42,132,255,.22), transparent 65%);
  filter:blur(32px);
}
.product-shell{
  position:relative;width:100%;
  background:linear-gradient(180deg,rgba(8,28,54,.92),rgba(7,22,41,.94));
  border:1px solid rgba(72,132,205,.36);
  border-radius:30px;padding:28px;
  box-shadow:0 30px 70px rgba(0,0,0,.32), inset 0 1px 0 rgba(255,255,255,.04);
}
.shell-top{
  display:flex;justify-content:space-between;align-items:center;
  margin-bottom:20px;
}
.shell-title{font-size:28px;font-weight:800}
.shell-status{
  padding:8px 14px;border-radius:999px;font-size:13px;font-weight:700;
  background:rgba(30,116,255,.14);border:1px solid rgba(73,143,255,.35);color:#85c2ff;
}
.shell-hero{
  background:linear-gradient(180deg, rgba(20,49,84,.95), rgba(13,36,64,.95));
  border:1px solid rgba(72,132,205,.2);
  border-radius:24px;padding:28px;min-height:180px;
}
.assistant-small{color:#eaf4ff;font-size:18px;font-weight:700}
.assistant-big{margin-top:10px;font-size:34px;font-weight:800}
.assistant-desc{margin-top:10px;color:#bad1ee;line-height:1.8}
.module-grid{
  margin-top:20px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
}
.module-card{
  background:rgba(11,37,66,.92);
  border:1px solid rgba(72,132,205,.2);
  border-radius:18px;padding:18px 14px;text-align:center;
}
.module-icon{
  width:58px;height:58px;margin:0 auto 12px;
  border-radius:16px;display:grid;place-items:center;
  font-size:12px;font-weight:800;
  background:linear-gradient(180deg,#47a7ff,#1d79ff);
  box-shadow:0 10px 24px rgba(30,116,255,.25);
}
.module-name{font-size:14px;color:#dcebff;font-weight:700}
.section{padding:54px 0}
.section-alt{padding-top:38px}
.section-head{text-align:center;max-width:760px;margin:0 auto 30px}
.section-head h2{margin:0;font-size:46px;letter-spacing:-.8px}
.section-head p{margin:14px 0 0;color:#b8d0ef;font-size:18px;line-height:1.85}
.feature-grid,.workflow-grid{
  display:grid;gap:20px;
}
.feature-grid{grid-template-columns:repeat(4,1fr)}
.workflow-grid{grid-template-columns:repeat(3,1fr)}
.feature-card,.step-card{
  background:linear-gradient(180deg, rgba(9,28,51,.96), rgba(7,22,40,.96));
  border:1px solid rgba(74,132,201,.22);
  border-radius:24px;padding:26px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
}
.feature-card h3,.step-card h3{margin:16px 0 10px;font-size:24px}
.feature-card p,.step-card p{margin:0;color:#b8d0ef;line-height:1.85}
.feature-no,.step-no{
  width:48px;height:48px;border-radius:16px;display:grid;place-items:center;
  background:rgba(30,116,255,.16);
  border:1px solid rgba(84,144,219,.28);
  color:#83c0ff;font-weight:800;
}
.download-panel{
  display:grid;grid-template-columns:1.15fr .85fr;gap:20px;
  background:linear-gradient(180deg, rgba(9,28,51,.96), rgba(7,22,40,.96));
  border:1px solid rgba(74,132,201,.24);
  border-radius:30px;padding:32px;
}
.download-copy h2{margin:8px 0 14px;font-size:44px}
.download-copy p{margin:0;color:#b8d0ef;font-size:18px;line-height:1.9}
.download-meta{
  display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-content:start;
}
.meta-card{
  background:rgba(11,37,66,.92);
  border:1px solid rgba(72,132,205,.2);
  border-radius:20px;padding:18px;
}
.meta-card span{display:block;color:#93bdea;font-size:13px;margin-bottom:6px}
.meta-card strong{font-size:24px}
.btn-download{grid-column:1/-1;height:54px;font-size:16px}
.site-footer{
  margin-top:28px;padding-top:30px;border-top:1px solid rgba(86,140,208,.16);
}
.footer-grid{
  display:grid;grid-template-columns:1.3fr .6fr .6fr;gap:20px;padding:18px 0 28px;
}
.footer-brand .brand-text{font-size:26px}
.footer-desc{color:#a9c5e7;max-width:420px;line-height:1.85}
.site-footer h4{margin:0 0 12px;font-size:16px}
.site-footer a{display:block;color:#b8d0ef;margin:8px 0}
.site-footer a:hover{color:#fff}
.copyright{
  padding:16px 0 26px;text-align:center;color:#8fb1d7;font-size:14px;
}
@media (max-width: 1080px){
  .hero-grid,.download-panel{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .module-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 760px){
  .container{width:min(100% - 28px, 1200px)}
  .header-inner{height:auto;padding:16px 0;flex-wrap:wrap}
  .nav{gap:16px;flex-wrap:wrap}
  .brand-text{font-size:26px}
  .hero{padding-top:42px}
  .hero h1{font-size:50px}
  .hero-desc,.section-head p,.download-copy p{font-size:16px}
  .feature-grid,.workflow-grid,.download-meta,.footer-grid{grid-template-columns:1fr}
  .hero-actions{flex-wrap:wrap}
}