*,
*::before,
*::after{box-sizing:border-box;margin:0;padding:0}

html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:#020617;
  color:#e5e7eb;
  line-height:1.8;
  display:flex;
  flex-direction:column;
  min-height:100vh;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 16px}

/* 顶部：极简细导航条 */
.topbar{
  background:rgba(15,23,42,.96);
  border-bottom:1px solid rgba(30,64,175,.6);
  backdrop-filter:blur(12px);
  position:sticky;top:0;z-index:20;
}
.topbar__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:10px;padding:8px 0;
}
.brand{
  display:flex;align-items:center;gap:10px;
}
.brand__mark{
  width:30px;height:30px;border-radius:10px;
  background:conic-gradient(from 180deg,#22c55e,#0ea5e9,#4f46e5,#22c55e);
  padding:2px;
}
.brand__mark span{
  width:100%;height:100%;border-radius:8px;
  background:#020617;color:#bbf7d0;
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:900;font-size:15px;
}
.brand__name{display:flex;flex-direction:column;line-height:1.1}
.brand__name strong{font-size:14px}
.brand__name small{font-size:11px;color:rgba(148,163,184,.96);font-weight:700}

.nav{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
}
.nav a{
  font-size:12px;font-weight:700;
  padding:5px 10px;border-radius:999px;
  border:1px solid transparent;
  color:rgba(226,232,240,.96);
  transition:background .18s,border-color .18s,color .18s,transform .18s;
}
.nav a:hover{
  background:rgba(15,118,110,.4);
  border-color:rgba(45,212,191,.6);
}
.nav a.active{
  background:#22c55e;
  border-color:#22c55e;
  color:#022c22;
}

.topbar__cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:6px 12px;border-radius:999px;
  background:#22c55e;color:#022c22;
  font-size:12px;font-weight:800;
  box-shadow:0 10px 26px rgba(22,163,74,.6);
}
.topbar__cta:hover{transform:translateY(-1px);filter:saturate(1.05)}

main{flex:1;}

/* Hero：全宽分层带状布局 */
.hero{
  background:
    radial-gradient(900px 360px at 0 0,rgba(56,189,248,.48),rgba(15,23,42,0)),
    radial-gradient(900px 360px at 100% 0,rgba(34,197,94,.45),rgba(15,23,42,0)),
    linear-gradient(180deg,#020617,#020617);
  border-bottom:1px solid rgba(30,64,175,.6);
}
.hero__shell{
  padding:26px 0 18px;
}
.hero__tagline{
  font-size:11px;color:rgba(191,219,254,.96);
  text-transform:uppercase;letter-spacing:.08em;
  margin-bottom:8px;
}
.hero__header{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1.1fr);
  gap:18px;align-items:flex-end;
}
.hero__title h1{
  font-size:26px;line-height:1.3;margin-bottom:6px;
}
.hero__title p{
  font-size:13px;color:rgba(191,219,254,.96);max-width:460px;
}
.hero__meta{
  font-size:11px;color:rgba(148,163,184,.96);text-align:right;
}

.hero__bands{
  margin-top:18px;
  display:grid;
  gap:10px;
}
.band{
  border-radius:18px;
  border:1px solid rgba(51,65,85,.95);
  overflow:hidden;
}
.band--primary{
  background:linear-gradient(135deg,rgba(15,23,42,.98),rgba(15,23,42,.94));
}
.band--mid{
  background:radial-gradient(circle at 0 0,rgba(56,189,248,.28),rgba(15,23,42,.98));
}
.band--light{
  background:radial-gradient(circle at 100% 0,rgba(34,197,94,.28),rgba(15,23,42,.98));
}

.band__inner{
  display:grid;
  grid-template-columns:minmax(0,1.3fr) minmax(0,1.1fr);
  gap:16px;
  padding:12px 14px 11px;
}
.band__title{
  font-size:14px;font-weight:800;margin-bottom:4px;color:#e5e7eb;
}
.band__text{
  font-size:13px;color:rgba(226,232,240,.96);
}
.band__actions{
  margin-top:10px;
  display:flex;gap:10px;flex-wrap:wrap;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:7px 14px;border-radius:999px;border:1px solid transparent;
  font-size:12px;font-weight:800;
  transition:background .18s,border-color .18s,color .18s,transform .18s,box-shadow .18s;
}
.btn--primary{
  background:linear-gradient(135deg,#22c55e,#0ea5e9);
  color:#022c22;
  box-shadow:0 12px 32px rgba(16,185,129,.65);
}
.btn--primary:hover{transform:translateY(-1px);filter:saturate(1.05)}
.btn--ghost{
  background:transparent;border-color:rgba(148,163,184,.85);color:rgba(226,232,240,.96);
}
.btn--ghost:hover{border-color:#e5e7eb}

.band__media{
  display:grid;grid-template-rows:auto auto;gap:9px;
}
.mediaCard{
  border-radius:14px;
  border:1px solid rgba(51,65,85,.95);
  overflow:hidden;
  background:#020617;
}
.mediaCard img{
  width:100%;height:170px;object-fit:cover;
}
.mediaCard__pad{
  padding:8px 10px;font-size:12px;color:rgba(191,219,254,.96);
}
.mediaCard__pad strong{display:block;margin-bottom:2px;color:#e5e7eb}

.metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;
}
.metric{
  border-radius:12px;
  border:1px solid rgba(30,64,175,.9);
  background:rgba(15,23,42,.95);
  padding:7px 8px;
  font-size:11px;color:rgba(191,219,254,.96);
}
.metric b{display:block;font-size:13px;color:#bfdbfe}

/* 内容带：三条信息带结构 */
.section{
  padding:18px 0;
}
.stripe{
  border-radius:18px;
  border:1px solid rgba(51,65,85,.95);
  background:#020617;
  box-shadow:0 20px 60px rgba(15,23,42,.95);
  padding:14px 14px 12px;
}
.stripe__head{
  display:flex;align-items:baseline;justify-content:space-between;
  gap:12px;flex-wrap:wrap;margin-bottom:10px;
}
.stripe__head h2{font-size:18px}
.stripe__head p{font-size:13px;color:rgba(148,163,184,.96);max-width:640px}

.columns-3{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;
}
.pill{
  border-radius:14px;
  background:radial-gradient(circle at 0 0,rgba(56,189,248,.35),rgba(15,23,42,.98));
  border:1px solid rgba(51,65,85,.95);
  padding:10px 10px 9px;
  font-size:12px;color:rgba(226,232,240,.96);
}
.pill strong{display:block;font-size:13px;margin-bottom:3px;color:#e5e7eb}

.stripe--alt{
  margin-top:12px;
  background:radial-gradient(circle at 100% 0,rgba(34,197,94,.35),rgba(15,23,42,.98));
}
.columns-4{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;
}

.faq-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;
  margin-top:8px;
}
.faq-grid details{
  border-radius:14px;
  border:1px solid rgba(51,65,85,.95);
  background:#020617;
  padding:8px 10px;
  font-size:12px;color:rgba(226,232,240,.96);
}
.faq-grid summary{cursor:pointer;font-weight:800}
.faq-grid summary::-webkit-details-marker{display:none}
.faq-grid p{margin-top:6px}

/* 页脚 */
.footer{
  margin-top:22px;
  background:#020617;
  border-top:1px solid rgba(30,64,175,.7);
}
.footer__grid{
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.9fr) minmax(0,.9fr);
  gap:12px;padding:16px 0 10px;
  font-size:13px;color:rgba(148,163,184,.96);
}
.footer h4{font-size:14px;margin-bottom:6px;color:#e5e7eb}
.footer a{display:block;padding:3px 0;color:rgba(191,219,254,.96)}
.footer a:hover{color:#f9fafb;text-decoration:underline}
.footer__bottom{
  border-top:1px solid rgba(30,64,175,.7);
  padding:8px 0 10px;
  font-size:12px;color:rgba(148,163,184,.9);
}

@media (max-width: 960px){
  .hero__header{grid-template-columns:1fr}
  .band__inner{grid-template-columns:1fr}
  .metrics{grid-template-columns:repeat(3,minmax(0,1fr))}
  .columns-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .columns-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 640px){
  .hero__title h1{font-size:24px}
  .metrics{grid-template-columns:1fr}
  .columns-3{grid-template-columns:1fr}
  .columns-4{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
}