*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#121722;background:#fbfbff;letter-spacing:0;overflow-x:hidden}
body:before{content:"";position:fixed;inset:0;z-index:-1;background:linear-gradient(115deg,#eef4ff 0 34%,transparent 34% 100%),linear-gradient(295deg,rgba(255,74,96,.1) 0 24%,transparent 24% 100%)}
a{color:inherit;text-decoration:none}
.topbar{width:min(1180px,92%);margin:18px auto 0;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 14px;border:1px solid #dfe6f2;background:rgba(255,255,255,.92);border-radius:8px;position:sticky;top:14px;z-index:30;box-shadow:0 14px 36px rgba(22,37,68,.08);backdrop-filter:blur(16px)}
.brand{display:flex;align-items:center;gap:10px;font-weight:950;font-size:19px;white-space:nowrap}
.brand img{width:38px;height:38px;border-radius:8px;display:block}
.topbar nav{display:flex;gap:28px;color:#59657a;font-size:14px}
.topbar-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.download,.ghost{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 24px;border-radius:8px;font-weight:950}
.download{background:#1d4ed8;color:#fff;box-shadow:0 18px 36px rgba(29,78,216,.18)}
.download.windows{background:#ff4a60;color:#fff;box-shadow:0 18px 36px rgba(255,74,96,.18)}
.download.small{min-height:40px;padding:0 18px}
.ghost{border:1px solid #d6deec;color:#182235;background:#fff}
.hero{width:min(1180px,92%);margin:64px auto 86px;display:grid;grid-template-columns:minmax(0,1fr) 520px;gap:54px;align-items:center}
.hero-panel{padding:22px 0}
.status-line{display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;color:#1d4ed8;font-weight:950;font-size:14px}
.status-line span{width:10px;height:10px;border-radius:50%;background:#ff4a60;box-shadow:0 0 0 7px rgba(255,74,96,.12)}
h1,h2,h3,p{letter-spacing:0}
h1{max-width:780px;margin:0;font-size:66px;line-height:1.05;color:#121722}
.hero-panel p{max-width:650px;margin:24px 0 0;color:#59657a;font-size:18px;line-height:1.8}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.network-stage{height:520px;position:relative;border:1px solid #dfe6f2;border-radius:8px;overflow:hidden;background:#121722;box-shadow:0 28px 72px rgba(18,23,34,.2)}
.stage-grid{position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(0deg,rgba(255,255,255,.08) 1px,transparent 1px);background-size:42px 42px}
.core{position:absolute;left:50%;top:50%;width:132px;height:132px;transform:translate(-50%,-50%);display:grid;place-items:center;border-radius:8px;background:#fff;box-shadow:0 0 0 12px rgba(29,78,216,.16),0 0 60px rgba(29,78,216,.28)}
.core img{width:70px;height:70px;border-radius:8px}
.core strong{position:absolute;bottom:22px;color:#121722;font-size:12px}
.link{position:absolute;height:3px;background:linear-gradient(90deg,transparent,#1d4ed8,#ff4a60,transparent);transform-origin:left center;opacity:.95}
.link-a{width:214px;left:256px;top:184px;transform:rotate(-23deg)}
.link-b{width:210px;left:118px;top:305px;transform:rotate(156deg)}
.link-c{width:216px;left:250px;top:330px;transform:rotate(28deg)}
.node{position:absolute;width:98px;height:76px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.16);border-radius:8px;background:#fff;color:#121722;box-shadow:0 18px 34px rgba(0,0,0,.22)}
.node b{font-size:26px;color:#1d4ed8}
.node span{color:#ff4a60;font-weight:950}
.node-a{right:48px;top:124px}
.node-b{left:44px;bottom:138px}
.node-c{right:78px;bottom:74px}
.metric{position:absolute;left:28px;top:28px;width:205px;padding:18px;border-radius:8px;background:#fff;color:#121722}
.metric span{display:block;font-size:13px;color:#59657a;font-weight:900}
.metric strong{display:block;margin:6px 0 14px;font-size:22px}
.metric em{display:block;height:8px;border-radius:999px;background:linear-gradient(90deg,#1d4ed8 0 62%,#ff4a60 62% 82%,#dbe3f0 82% 100%)}
section{width:min(1180px,92%);margin:0 auto 82px}
.nodes{display:grid;grid-template-columns:370px 1fr;gap:36px;align-items:start;padding:34px;background:#fff;border:1px solid #dfe6f2;border-radius:8px}
.node-copy p,.faq>div:first-child p{margin:0 0 12px;color:#ff4a60;font-weight:950}
.node-copy h2,.faq h2{margin:0;font-size:40px;line-height:1.18;color:#121722}
.node-table{display:grid;gap:10px}
.node-table div{display:grid;grid-template-columns:1fr 90px 110px;align-items:center;gap:14px;padding:18px 20px;border-radius:8px;background:#f6f8fc;border:1px solid #dfe6f2}
.node-table span{font-weight:950}
.node-table b{color:#1d4ed8;font-size:22px}
.node-table em{font-style:normal;color:#ff4a60;font-weight:950}
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.features article{padding:24px;border-radius:8px;background:#121722;color:#fff}
.features span{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:8px;background:#ff4a60;color:#fff;font-weight:950}
.features h3{margin:22px 0 10px;font-size:21px}
.features p{margin:0;color:#c2cad8;line-height:1.68}
.faq{display:grid;grid-template-columns:360px 1fr;gap:34px;align-items:start}
.faq-list{display:grid;gap:12px}
.faq details{padding:20px 22px;border-radius:8px;border:1px solid #dfe6f2;background:#fff}
.faq summary{cursor:pointer;font-size:18px;font-weight:950}
.faq p{margin:12px 0 0;color:#59657a;line-height:1.7}
footer{text-align:center;color:#69758a;padding:36px 16px 44px}
@media(max-width:980px){
  .topbar nav{display:none}
  .hero{grid-template-columns:1fr;gap:36px;margin-top:46px}
  h1{font-size:50px}
  .network-stage{height:470px}
  .nodes,.faq{grid-template-columns:1fr}
  .features{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .topbar{width:94%;gap:10px}
  .topbar-actions{gap:8px}
  .brand span{font-size:16px}
  .download.small{padding:0 10px;font-size:13px}
  h1{font-size:38px}
  .hero-panel p{font-size:16px}
  .download,.ghost{width:100%;min-height:50px}
  .network-stage{height:430px}
  .core{width:108px;height:108px}
  .core img{width:58px;height:58px}
  .metric{left:14px;top:14px;width:160px}
  .metric strong{font-size:18px}
  .node{width:82px;height:66px}
  .node-a{right:18px;top:126px}
  .node-b{left:18px;bottom:120px}
  .node-c{right:30px;bottom:54px}
  .features,.node-table div{grid-template-columns:1fr}
  .node-table div{gap:8px}
  .nodes{padding:22px}
}