*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#08060f;
  --card:#13101f;
  --line:rgba(255,255,255,.08);
  --txt:#f0ecfa;
  --muted:#9c96b8;
  --c1:#a78bfa;
  --c2:#22d3ee;
  --grad:linear-gradient(115deg,#a78bfa,#22d3ee);
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--txt);overflow-x:hidden;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.75;font-size:16px;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(700px 420px at 10% -5%,rgba(167,139,250,.13),transparent 62%),
    radial-gradient(760px 520px at 92% 6%,rgba(34,211,238,.13),transparent 62%),
    linear-gradient(180deg,#08060f 0%,#08060f 100%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1180px;margin:0 auto;padding:0 22px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ============ 导航 ============ */
.topbar{
  position:sticky;top:0;z-index:80;
  background:rgba(8,6,15,.82);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{position:relative;max-width:1180px;margin:0 auto;padding:0 22px;height:68px;display:flex;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:800;letter-spacing:.4px;color:#fff}
.logo img{border-radius:9px}
.nav-cb,.dd-cb{display:none}
.menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.menu>li{position:relative}
.menu>li>a,.dd-label{
  display:block;padding:9px 14px;border-radius:10px;font-size:15px;color:var(--muted);
  cursor:pointer;transition:.22s;white-space:nowrap;
}
.menu>li>a:hover,.dd-label:hover{color:#fff;background:rgba(255,255,255,.06)}
.arr{font-size:11px;margin-left:4px;display:inline-block;transition:.22s}
.dd-cb:checked ~ .dd-label{color:#fff;background:rgba(255,255,255,.06)}
.dd-cb:checked ~ .dd-label .arr{transform:rotate(180deg)}
.sub{
  position:absolute;top:calc(100% + 8px);left:0;min-width:205px;
  background:#100d1e;border:1px solid var(--line);border-radius:14px;padding:8px;
  display:none;flex-direction:column;gap:2px;z-index:90;
  box-shadow:0 24px 56px -22px rgba(0,0,0,.9);
}
.dd-cb:checked ~ .sub{display:flex}
.sub a{display:block;padding:8px 12px;border-radius:9px;font-size:14px;color:var(--muted);transition:.2s}
.sub a:hover{color:#fff;background:rgba(167,139,250,.14)}
.btn-nav{
  display:inline-block;padding:10px 20px;border-radius:999px;font-size:14px;font-weight:700;
  background:var(--grad);color:#0a0618;white-space:nowrap;
  box-shadow:0 10px 26px -12px rgba(167,139,250,.9);transition:.25s;
}
.btn-nav:hover{transform:translateY(-2px)}
.burger{display:none;margin-left:auto;font-size:22px;color:#fff;cursor:pointer;padding:4px 10px;border-radius:10px;border:1px solid var(--line)}

/* ============ Hero ============ */
.hero{padding:72px 0 40px}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
.hero h1{font-size:clamp(32px,4.6vw,54px);line-height:1.22;font-weight:800;letter-spacing:-.5px}
.hero .sub{margin-top:20px;font-size:17px;color:var(--muted);max-width:600px}
.hero-note{
  margin-top:20px;font-size:16px;color:var(--muted);max-width:600px;
  padding-left:14px;border-left:2px solid rgba(167,139,250,.5);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn{
  display:inline-block;padding:14px 30px;border-radius:999px;font-weight:700;font-size:15px;
  background:var(--grad);color:#0a0618;transition:.25s;
  box-shadow:0 16px 34px -16px rgba(167,139,250,.95);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 22px 44px -18px rgba(167,139,250,1)}
.btn-ghost{
  display:inline-block;padding:14px 28px;border-radius:999px;font-weight:600;font-size:15px;
  border:1px solid rgba(255,255,255,.2);color:#fff;transition:.25s;
}
.btn-ghost:hover{border-color:var(--c1);color:var(--c1);background:rgba(167,139,250,.1)}
.hero-stats{display:flex;flex-wrap:wrap;gap:34px;margin-top:40px}
.hs b{display:block;font-size:27px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.3}
.hs span{font-size:13px;color:var(--muted)}

/* ============ 演示窗口 ============ */
.demo input{display:none}
.demo-window{
  background:linear-gradient(160deg,#17122a,#0d0a18);
  border:1px solid var(--line);border-radius:22px;padding:22px;
  box-shadow:0 40px 80px -40px rgba(0,0,0,.95);transition:.4s;
}
#demo-connect:checked ~ .demo-window{
  border-color:rgba(167,139,250,.45);
  box-shadow:0 0 0 1px rgba(167,139,250,.3),0 40px 90px -42px rgba(167,139,250,.6);
}
.demo-top{display:flex;align-items:center;justify-content:space-between}
.dlogo{font-weight:800;letter-spacing:.5px}
.pill{font-size:12px;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.07);color:var(--muted)}
.pill .on{display:none;color:var(--c1)}
#demo-connect:checked ~ .demo-window .pill .off{display:none}
#demo-connect:checked ~ .demo-window .pill .on{display:inline}
#demo-connect:checked ~ .demo-window .pill{background:rgba(167,139,250,.16)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{
  font-size:13px;padding:6px 13px;border-radius:999px;cursor:pointer;
  border:1px solid var(--line);color:var(--muted);transition:.22s;
}
.chip:hover{color:#fff;border-color:rgba(255,255,255,.28)}
#node-hk:checked ~ .demo-window label[for="node-hk"],
#node-sg:checked ~ .demo-window label[for="node-sg"],
#node-jp:checked ~ .demo-window label[for="node-jp"],
#node-us:checked ~ .demo-window label[for="node-us"]{
  color:#0a0618;background:var(--grad);border-color:transparent;font-weight:700;
}
.gauge-zone{display:flex;flex-direction:column;align-items:center;gap:12px;margin:22px 0 6px}
.gauge{
  width:168px;height:168px;border-radius:50%;padding:6px;display:grid;place-items:center;
  background:conic-gradient(from 210deg,#a78bfa,#22d3ee 52%,rgba(255,255,255,.07) 74%);
  transition:.4s;
}
#demo-connect:not(:checked) ~ .demo-window .gauge{filter:grayscale(.65) brightness(.62)}
.gauge-core{
  width:100%;height:100%;border-radius:50%;background:#0f0b1c;
  display:grid;place-items:center;text-align:center;padding:8px;
}
.gv{display:none;font-size:29px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.25}
.gauge-core small{display:block;font-size:12px;color:var(--muted);margin-top:2px}
#node-hk:checked ~ .demo-window .g1,
#node-sg:checked ~ .demo-window .g2,
#node-jp:checked ~ .demo-window .g3,
#node-us:checked ~ .demo-window .g4{display:block}
.lat{font-size:12.5px;color:var(--muted)}
.node-info{min-height:22px;text-align:center;font-size:13px;color:var(--muted);margin-top:6px}
.nl{display:none}
#node-hk:checked ~ .demo-window .nl-1,
#node-sg:checked ~ .demo-window .nl-2,
#node-jp:checked ~ .demo-window .nl-3,
#node-us:checked ~ .demo-window .nl-4{display:block}
.connect-btn{
  display:block;margin-top:16px;padding:14px;border-radius:13px;text-align:center;cursor:pointer;
  font-weight:800;font-size:15px;color:#0a0618;background:var(--grad);transition:.25s;
}
.connect-btn:hover{filter:brightness(1.08)}
.c-on{display:none}
#demo-connect:checked ~ .demo-window .c-off{display:none}
#demo-connect:checked ~ .demo-window .c-on{display:inline}
.demo-toggles{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.dt{
  flex:1;min-width:96px;text-align:center;font-size:13px;padding:9px 6px;border-radius:11px;cursor:pointer;
  border:1px solid var(--line);color:var(--muted);transition:.22s;
}
.dt:hover{color:#fff}
#tg1:checked ~ .demo-window .dt[for="tg1"],
#tg2:checked ~ .demo-window .dt[for="tg2"],
#tg3:checked ~ .demo-window .dt[for="tg3"]{
  color:var(--c1);border-color:rgba(167,139,250,.55);background:rgba(167,139,250,.12);
}

/* ============ 通用区块 ============ */
.sec{padding:72px 0}
.sec-head{text-align:center;max-width:820px;margin:0 auto 42px}
.tag{
  display:inline-block;font-size:12.5px;letter-spacing:1.5px;padding:5px 14px;border-radius:999px;
  color:var(--c1);border:1px solid rgba(167,139,250,.38);background:rgba(167,139,250,.1);
}
.sec-head h2{font-size:clamp(24px,3.2vw,36px);font-weight:800;margin:16px 0 12px;line-height:1.35}
.sec-head p{color:var(--muted);font-size:15.5px}

/* 数据条 */
.band{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.b{
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:18px;padding:22px 18px;text-align:center;transition:.28s;
}
.b:hover{transform:translateY(-4px);border-color:rgba(167,139,250,.38)}
.b .ic{font-size:24px;margin-bottom:6px}
.b b{display:block;font-size:22px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.b span{font-size:13px;color:var(--muted)}

/* 功能卡 */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px 20px;transition:.28s;
}
.card:hover{transform:translateY(-5px);border-color:rgba(167,139,250,.38);background:#1a1430}
.card .ic{font-size:24px;margin-bottom:12px}
.card .step-no{
  display:inline-block;font-size:11.5px;letter-spacing:1px;color:var(--c1);
  border:1px solid rgba(167,139,250,.35);border-radius:999px;padding:2px 10px;margin-bottom:10px;
}
.card h3{font-size:17px;font-weight:700;margin-bottom:9px;line-height:1.5}
.card p{font-size:14px;color:var(--muted);line-height:1.8}

/* 节点 */
.nodes-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.node-card{
  background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;transition:.28s;
}
.node-card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.42)}
.nc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.nc-top b{font-size:15.5px}
.nc-top em{
  font-style:normal;font-size:11.5px;padding:2px 9px;border-radius:999px;
  color:#0a0618;background:var(--grad);font-weight:700;
}
.nc-top em:empty{display:none}
.lat2{font-size:13px;color:var(--muted);margin-bottom:10px}
.bar{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:var(--grad)}
.node-note{
  margin-top:22px;text-align:center;font-size:14px;color:var(--muted);
  border:1px dashed rgba(255,255,255,.14);border-radius:16px;padding:20px 22px;
}
.node-note b{color:var(--c1);font-weight:700}

/* 场景 */
.scenarios{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sc{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px 20px;transition:.28s}
.sc:hover{transform:translateY(-5px);border-color:rgba(167,139,250,.38)}
.sc .ic{font-size:24px;margin-bottom:10px}
.sc h3{font-size:17px;margin-bottom:9px}
.sc p{font-size:14px;color:var(--muted);line-height:1.8}
.sc .quote{display:block;margin-top:12px;font-size:13px;color:#8e88a8;border-left:2px solid rgba(167,139,250,.45);padding-left:10px}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{
  background:linear-gradient(160deg,rgba(167,139,250,.1),rgba(34,211,238,.06));
  border:1px solid var(--line);border-radius:18px;padding:26px 22px;transition:.28s;
}
.step:hover{transform:translateY(-4px)}
.step h3{font-size:17px;margin-bottom:10px;position:relative;padding-left:34px}
.step h3::before{
  content:"";position:absolute;left:0;top:6px;width:18px;height:18px;border-radius:50%;
  background:var(--grad);box-shadow:0 0 18px rgba(167,139,250,.75);
}
.step p{font-size:14px;color:var(--muted);line-height:1.8}
.step p + p{margin-top:8px}

/* 价格 */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.price{
  background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px 24px;transition:.28s;
}
.price:hover{transform:translateY(-5px)}
.price.hot{
  border-color:transparent;
  background:linear-gradient(#13101f,#13101f) padding-box,var(--grad) border-box;
  border:1.5px solid transparent;box-shadow:0 30px 70px -34px rgba(167,139,250,.65);
}
.price h3{font-size:18px}
.pdesc{font-size:13px;color:var(--muted);margin:6px 0 14px}
.amt{font-size:34px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.3}
.amt small{font-size:14px;font-weight:500;color:var(--muted);-webkit-text-fill-color:var(--muted)}
.price ul{margin:18px 0 22px;display:flex;flex-direction:column;gap:10px}
.price li{font-size:14px;color:var(--muted);padding-left:20px;position:relative}
.price li::before{content:"✓";position:absolute;left:0;color:var(--c1);font-weight:800}
.price .btn{display:block;text-align:center;padding:13px}
.pricing-note{margin-top:24px;text-align:center;font-size:13.5px;color:#8e88a8}

/* FAQ */
.faq{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
details{
  background:var(--card);border:1px solid var(--line);border-radius:15px;padding:16px 20px;transition:.25s;
}
details:hover{border-color:rgba(167,139,250,.32)}
details[open]{border-color:rgba(167,139,250,.45)}
summary{
  cursor:pointer;font-weight:700;font-size:15.5px;list-style:none;position:relative;padding-right:28px;
}
summary::-webkit-details-marker{display:none}
summary::after{
  content:"+";position:absolute;right:0;top:-2px;font-size:20px;color:var(--c1);transition:.25s;
}
details[open] summary::after{content:"−"}
details .a{margin-top:12px;font-size:14.5px;color:var(--muted)}
details .a p + p{margin-top:10px}
details .a ol{padding-left:20px;display:flex;flex-direction:column;gap:7px;list-style:decimal}
details .a ol li::marker{color:var(--c1);font-weight:700}

/* 用户评价 */
.testis{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ti{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;transition:.28s}
.ti:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.38)}
.stars{color:#fbbf24;font-size:14px;letter-spacing:2px;margin-bottom:10px}
.ti p{font-size:14px;color:#d3cde8;margin-bottom:16px}
.who{display:flex;align-items:center;gap:11px}
.av{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:15px;
  background:var(--grad);color:#0a0618;flex:0 0 auto;
}
.who b{display:block;font-size:14px}
.who span{font-size:12.5px;color:var(--muted)}

/* 资讯 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.28s;
}
.news-card:hover{transform:translateY(-5px);border-color:rgba(167,139,250,.38)}
.news-card img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;background:#15102a}
.nc-body{padding:18px 20px 22px}
.date{font-size:12.5px;color:var(--c1);margin-bottom:8px;letter-spacing:.5px}
.nc-body h3{font-size:16px;line-height:1.55;margin-bottom:8px}
.nc-body h3 a:hover{color:var(--c1)}
.nc-body p{font-size:13.5px;color:var(--muted)}

/* CTA */
.cta{padding:20px 0 80px}
.cta-box{
  text-align:center;padding:64px 26px;border-radius:26px;
  background:
    radial-gradient(600px 300px at 50% 0%,rgba(167,139,250,.2),transparent 70%),
    linear-gradient(160deg,#151029,#0d0a18);
  border:1px solid var(--line);
}
.cta-box h2{font-size:clamp(23px,3vw,33px);font-weight:800;margin-bottom:12px}
.cta-box p{color:var(--muted);margin-bottom:26px}

/* 页脚 */
footer{background:#050409;border-top:1px solid var(--line);padding:52px 0 24px}
.foot{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.fdesc{font-size:13.5px;color:var(--muted);margin-top:14px;max-width:340px}
footer h4{font-size:14.5px;margin-bottom:14px;color:#fff}
footer ul{display:flex;flex-direction:column;gap:9px}
footer ul a{font-size:13.5px;color:var(--muted);transition:.2s}
footer ul a:hover{color:var(--c1)}
.copy{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:#79738f;text-align:center;
}
.copy a{color:#9c96b4}
.copy a:hover{color:var(--c1)}

.totop{
  position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;font-size:18px;font-weight:700;
  background:var(--grad);color:#0a0618;box-shadow:0 14px 30px -14px rgba(167,139,250,.95);z-index:70;
}

/* 滚动动画 */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .62s ease,transform .62s ease}
.js .reveal.in{opacity:1;transform:none}

/* 响应式 */
@media(max-width:1000px){
  .features,.nodes-grid{grid-template-columns:repeat(2,1fr)}
  .scenarios,.steps,.pricing,.testis,.news-grid{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .foot{grid-template-columns:1fr 1fr}
  .band{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  .burger{display:block}
  .btn-nav{display:none}
  .menu{
    display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;
    background:#0d0a18;border-bottom:1px solid var(--line);padding:10px 18px 18px;gap:2px;margin-left:0;
  }
  .nav-cb:checked ~ .menu{display:flex}
  .menu>li>a,.dd-label{padding:11px 12px}
  .sub{position:static;display:none;box-shadow:none;background:transparent;border:none;padding:0 0 0 14px;min-width:0}
  .dd-cb:checked ~ .sub{display:flex}
}
@media(max-width:620px){
  .features,.nodes-grid,.scenarios,.steps,.pricing,.testis,.news-grid,.foot{grid-template-columns:1fr}
  .sec{padding:54px 0}
  .hero{padding:48px 0 24px}
  .hero-stats{gap:22px}
  .cta-box{padding:46px 20px}
}