*,
*::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:#0b1120;
  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:1160px;margin:0 auto;padding:0 16px}

/* 头部：居中品牌 + 下沉导航条 */
.site-header{
  background:radial-gradient(900px 260px at 50% 0,#1d4ed8,#0b1120);
  border-bottom:1px solid rgba(30,64,175,.7);
  box-shadow:0 18px 50px rgba(15,23,42,.9);
}
.site-header__top{
  padding:14px 0 10px;
  text-align:center;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
}
.brand__mark{
  width:38px;height:38px;border-radius:12px;
  background:conic-gradient(from 180deg,#22c55e,#0ea5e9,#22c55e);
  padding:2px;
}
.brand__mark span{
  width:100%;height:100%;border-radius:10px;
  background:#020617;color:#bbf7d0;
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:900;font-size:18px;
}
.brand__name{display:flex;flex-direction:column;line-height:1.1}
.brand__name strong{font-size:16px}
.brand__name small{font-size:12px;color:rgba(148,163,184,.96);font-weight:700}

.site-header__bottom{
  border-top:1px solid rgba(30,64,175,.7);
  background:rgba(15,23,42,.9);
}
.nav{
  display:flex;align-items:center;justify-content:center;
  gap:14px;padding:8px 0 9px;flex-wrap:wrap;
  font-size:13px;
}
.nav a{
  padding:6px 12px;border-radius:999px;
  border:1px solid transparent;
  color:rgba(226,232,240,.96);
  font-weight:700;
  transition:background .18s,border-color .18s,color .18s,transform .18s;
}
.nav a:hover{
  background:rgba(37,99,235,.25);
  border-color:rgba(96,165,250,.8);
}
.nav a.active{
  background:#22c55e;
  border-color:#22c55e;
  color:#022c22;
}

.cta-top{
  display:inline-flex;align-items:center;justify-content:center;
  margin-left:8px;
  padding:7px 14px;border-radius:999px;
  background:#22c55e;color:#022c22;
  font-size:12px;font-weight:800;
  box-shadow:0 14px 40px rgba(22,163,74,.6);
}

main{flex:1;}

/* Hero：三列信息带结构 */
.hero{
  padding:26px 0 20px;
}
.hero-shell{
  border-radius:22px;
  border:1px solid rgba(51,65,85,.9);
  background:
    radial-gradient(900px 520px at 0 0,rgba(37,99,235,.45),rgba(15,23,42,0)),
    radial-gradient(900px 520px at 100% 0,rgba(16,185,129,.38),rgba(15,23,42,0)),
    #020617;
  box-shadow:0 26px 80px rgba(15,23,42,.95);
  padding:18px 18px 16px;
}
.hero-top{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:14px;margin-bottom:14px;flex-wrap:wrap;
}
.hero-tag{
  font-size:11px;color:rgba(191,219,254,.95);
  display:inline-flex;align-items:center;gap:8px;
}
.hero-tag i{
  width:9px;height:9px;border-radius:999px;
  background:conic-gradient(from 180deg,#22c55e,#0ea5e9,#22c55e);
}
.hero-title{flex:1;min-width:240px}
.hero-title h1{
  font-size:26px;line-height:1.3;margin-bottom:4px;
}
.hero-title p{
  font-size:13px;color:rgba(191,219,254,.96);max-width:440px;
}
.hero-meta{
  font-size:11px;color:rgba(148,163,184,.96);text-align:right;
}

.hero-grid{
  display:grid;
  grid-template-columns: minmax(0,1.15fr) minmax(0,1.15fr) minmax(0,.9fr);
  gap:16px;
}

.hero-col--text p{
  font-size:14px;color:rgba(226,232,240,.98);
}
.hero-actions{
  margin-top:14px;
  display:flex;flex-wrap:wrap;gap:10px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:8px 14px;border-radius:999px;border:1px solid transparent;
  font-size:13px;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 18px 50px 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,.7);color:rgba(226,232,240,.96);
}
.btn--ghost:hover{border-color:#e5e7eb}

.hero-col--list{
  font-size:12px;color:rgba(191,219,254,.96);
}
.hero-col--list h2{
  font-size:14px;margin-bottom:6px;color:#e5e7eb;
}
.hero-list{
  list-style:none;
}
.hero-list li{
  padding:5px 0;
  border-bottom:1px dashed rgba(51,65,85,.8);
}
.hero-list li:last-child{border-bottom:none}
.hero-list b{color:#bbf7d0}

.hero-col--media{
  display:grid;grid-template-rows:auto auto;gap:10px;
}
.mediaCard{
  border-radius:16px;
  border:1px solid rgba(51,65,85,.9);
  overflow:hidden;
  background:#020617;
}
.mediaCard img{
  width:100%;height:190px;object-fit:cover;
}
.mediaCard__pad{
  padding:9px 11px;font-size:12px;color:rgba(191,219,254,.96);
}
.mediaCard__pad strong{display:block;margin-bottom:2px;color:#e5e7eb}

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

/* 频道分区：上下两块卡片 */
.section{padding:20px 0}
.card{
  border-radius:20px;
  border:1px solid rgba(30,64,175,.9);
  background:#020617;
  box-shadow:0 22px 70px rgba(15,23,42,.95);
  padding:16px 16px 14px;
}
.card-head{
  display:flex;align-items:baseline;justify-content:space-between;
  gap:12px;flex-wrap:wrap;margin-bottom:12px;
}
.card-head h2{font-size:18px}
.card-head p{font-size:13px;color:rgba(148,163,184,.96);max-width:640px}

.grid-4{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;
}
.pill{
  border-radius:15px;
  background:radial-gradient(circle at 0 0,rgba(56,189,248,.45),rgba(15,23,42,0) 65%);
  border:1px solid rgba(51,65,85,.9);
  padding:10px 10px 9px;
  font-size:12px;color:rgba(209,213,219,.96);
}
.pill strong{display:block;font-size:14px;margin-bottom:3px;color:#e5e7eb}

.strip{
  margin-top:10px;
  border-radius:14px;
  background:linear-gradient(135deg,#1d4ed8,#0f766e);
  padding:9px 10px;
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;
  font-size:11px;color:#e5e7eb;
}
.strip b{display:block;margin-bottom:2px}

/* FAQ 栅格 */
.faq-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;
}
.faq-grid details{
  border-radius:15px;
  border:1px solid rgba(51,65,85,.9);
  background:#020617;
  padding:8px 10px;
  font-size:12px;color:rgba(226,232,240,.96);
}
.faq-grid summary{cursor:pointer;font-weight:700}
.faq-grid summary::-webkit-details-marker{display:none}
.faq-grid p{margin-top:6px}

/* 页脚 */
.footer{
  margin-top:26px;
  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: 980px){
  .hero-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,1.2fr);grid-auto-rows:auto}
  .hero-col--media{grid-column:1 / -1;grid-template-columns:minmax(0,1.1fr) minmax(0,1.1fr)}
  .metricRow{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .strip{grid-template-columns:1fr 1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 640px){
  .hero-title h1{font-size:24px}
  .hero-grid{grid-template-columns:1fr}
  .hero-col--media{grid-template-columns:1fr}
  .metricRow{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr}
  .strip{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
}