*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--brand:#0fb3a5;--brand2:#2f6bff;--ink:#0c2236;--muted:#5b7186;--bg:#f2f7fa;--line:#e2ebf2;--dark:#071a2b;--radius:18px;--shadow:0 10px 30px rgba(12,34,54,.08);--grad:linear-gradient(135deg,#12b6a6 0%,#2f6bff 100%)}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
h1,h2,h3,h4{line-height:1.3;font-weight:800;letter-spacing:-.02em}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
section{padding:84px 0;position:relative}
.sec-head{text-align:center;max-width:760px;margin:0 auto 48px}
.sec-head .tag{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--brand);background:rgba(15,179,165,.1);padding:6px 14px;border-radius:999px;margin-bottom:14px}
.sec-head h2{font-size:36px;margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:999px;font-weight:700;font-size:16px;border:0;cursor:pointer;transition:.25s;min-height:48px;text-align:center}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(47,107,255,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(47,107,255,.36)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.45);color:#fff;background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-line{border:1.5px solid #cfdfe9;color:var(--ink);background:#fff}
.btn-line:hover{border-color:var(--brand);color:var(--brand)}
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(7,26,43,.62);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:background .3s,box-shadow .3s}
.nav.scrolled{background:rgba(7,26,43,.94);box-shadow:0 6px 24px rgba(0,0,0,.18)}
.nav-inner{max-width:1180px;margin:0 auto;padding:0 24px;height:72px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:20px;flex-shrink:0}
.brand img{width:36px;height:36px;border-radius:9px;background:#fff}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-menu>li>a,.dd>summary{display:flex;align-items:center;gap:6px;color:#dbe7ef;font-size:15px;font-weight:600;padding:10px 14px;border-radius:10px;cursor:pointer;transition:.2s;list-style:none}
.nav-menu>li>a:hover,.dd>summary:hover,.nav-menu>li>a.act{color:#fff;background:rgba(255,255,255,.09)}
.dd{position:relative}
.dd>summary::-webkit-details-marker{display:none}
.dd>summary .arw{font-size:10px;transition:transform .25s;color:#8fb3c7}
.dd[open]>summary .arw{transform:rotate(180deg)}
.dd-panel{position:absolute;top:calc(100% + 10px);left:0;min-width:230px;background:#fff;border-radius:14px;box-shadow:0 18px 46px rgba(8,26,43,.2);padding:10px;display:grid;gap:2px}
.dd-panel a{display:block;padding:10px 14px;border-radius:9px;color:#2b3f52;font-size:14px;font-weight:600}
.dd-panel a:hover{background:#eef5fa;color:var(--brand)}
.nav-cta{margin-left:8px;padding:10px 22px;font-size:15px;min-height:42px}
.nav-toggle{display:none}
@media(min-width:993px){.dd:hover>.dd-panel{display:grid}.dd>.dd-panel{display:none}.dd[open]>.dd-panel{display:grid}}
@media(max-width:992px){
.nav-inner{height:64px;gap:10px}
.nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;background:rgba(255,255,255,.1);border:0;border-radius:10px;cursor:pointer;margin-left:auto;padding:0 10px}
.nav-toggle span{display:block;height:2px;background:#fff;border-radius:2px}
.nav-menu{position:fixed;top:64px;left:0;right:0;background:#081f33;flex-direction:column;align-items:stretch;gap:2px;padding:12px 16px 24px;margin:0;max-height:calc(100vh - 64px);overflow:auto;display:none}
.nav-menu.open{display:flex}
.nav-menu>li>a,.dd>summary{padding:14px 12px;font-size:16px}
.dd-panel{position:static;box-shadow:none;background:rgba(255,255,255,.06);padding:4px;margin-top:4px}
.dd-panel a{color:#cfe0ea}
.dd-panel a:hover{background:rgba(255,255,255,.1);color:#fff}
.nav-cta{display:none}
}
.hero{position:relative;background:radial-gradient(1200px 600px at 15% -10%,#0b4a63 0%,transparent 60%),radial-gradient(900px 500px at 92% 8%,#1a3a8f 0%,transparent 58%),linear-gradient(160deg,#05131f 0%,#072438 55%,#061a2b 100%);color:#fff;padding:150px 0 92px;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(70% 70% at 50% 30%,#000 30%,transparent 100%);pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:52px;margin-bottom:18px;letter-spacing:-.03em}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,#57f5dd,#7aa8ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{font-size:17px;color:#b9cddb;max-width:520px;margin-bottom:28px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:520px}
.hero-stats div{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:14px 16px}
.hero-stats b{display:block;font-size:24px;font-family:inherit;color:#6ef2dd}
.hero-stats span{font-size:12.5px;color:#a9c0d0}
.demo{background:rgba(10,32,50,.82);border:1px solid rgba(120,200,230,.24);border-radius:22px;padding:16px;box-shadow:0 26px 60px rgba(0,0,0,.4);position:relative;overflow:hidden}
.demo-top{display:flex;align-items:center;gap:10px;padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:14px}
.demo-top img{width:26px;height:26px;border-radius:7px;background:#fff}
.demo-top b{font-size:14px;color:#eaf6ff}
.demo-top .dots{margin-left:auto;display:flex;gap:6px}
.demo-top .dots i{width:8px;height:8px;border-radius:50%;background:#2f6bff;opacity:.6}
.demo-top .dots i:nth-child(2){background:#12b6a6}
.demo-top .dots i:nth-child(3){background:#57f5dd}
.d-pwr{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.dial{position:relative;display:grid;place-items:center;padding:6px 0 14px}
.dial svg{transform:rotate(-90deg);width:190px;height:190px}
.dial .track{fill:none;stroke:rgba(255,255,255,.1);stroke-width:10}
.dial .ring{fill:none;stroke:url(#dg);stroke-width:10;stroke-linecap:round;stroke-dasharray:471;stroke-dashoffset:471;transition:stroke-dashoffset 1.4s cubic-bezier(.3,.9,.3,1)}
.d-pwr:checked~.demo-body .ring{stroke-dashoffset:150}
.dial-face{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;width:150px}
.dial-face b{display:block;font-size:30px;color:#fff;letter-spacing:-.02em}
.dial-face span{display:block;font-size:12px;color:#93b4c8;margin-top:2px}
.v-on,.t-on{display:none}
.d-pwr:checked~.demo-body .v-on,.d-pwr:checked~.demo-body .t-on{display:inline}
.d-pwr:checked~.demo-body .v-off,.d-pwr:checked~.demo-body .t-off{display:none}
.demo-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.demo-stats div{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);border-radius:11px;padding:9px 6px;text-align:center}
.demo-stats span{display:block;font-size:10.5px;color:#8fadc1}
.demo-stats b{font-size:15px;color:#7ef0dc;font-weight:700}
.node-pick{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:10px}
.demo-body>.cnode{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.node-pick label{display:block;text-align:center;border:1px solid rgba(255,255,255,.14);border-radius:9px;padding:7px 2px;font-size:12px;color:#c2d6e3;cursor:pointer;transition:.2s;background:rgba(255,255,255,.03)}
.node-pick label:hover{border-color:rgba(110,242,221,.6)}
.cnode-gz:checked~.node-pick label[for=cnode-gz],.cnode-sh:checked~.node-pick label[for=cnode-sh],.cnode-bj:checked~.node-pick label[for=cnode-bj],.cnode-cd:checked~.node-pick label[for=cnode-cd]{background:rgba(18,182,166,.22);border-color:#2fe0cb;color:#b9fff5}
.node-info{font-size:12px;color:#a9c4d6;margin-bottom:12px;min-height:18px}
.node-info span{display:none;align-items:center;gap:6px}
.node-info span::before{content:"";width:6px;height:6px;border-radius:50%;background:#2fe0cb}
.cnode-gz:checked~.node-info .i-gz,.cnode-sh:checked~.node-info .i-sh,.cnode-bj:checked~.node-info .i-bj,.cnode-cd:checked~.node-info .i-cd{display:flex}
.cnode-bj:checked~.node-info .i-bj::before{background:#ffc857}
.demo-btn{width:100%;background:var(--grad);color:#fff;border:0;border-radius:12px;padding:13px;font-size:15px;font-weight:700;cursor:pointer;display:block;text-align:center;transition:.25s;min-height:46px}
.demo-btn:hover{filter:brightness(1.08)}
.d-pwr:checked~.demo-body .demo-btn{background:#133950;box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)}
.d-pwr:focus-visible~.demo-body .demo-btn{outline:2px solid #57f5dd;outline-offset:2px}
.speed-band{background:#0a2134;color:#fff;padding:46px 0}
.speed-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center}
.speed-grid b{display:block;font-size:34px;background:linear-gradient(100deg,#57f5dd,#8fb2ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.speed-grid span{font-size:13.5px;color:#a5bfd0}
.cards{display:grid;gap:22px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:transform .28s,box-shadow .28s;box-shadow:0 2px 6px rgba(12,34,54,.03)}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.card .ico{font-size:26px;width:52px;height:52px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,rgba(18,182,166,.14),rgba(47,107,255,.12));margin-bottom:16px}
.card h3{font-size:19px;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--muted)}
.nodes-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:start}
.node-map{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow)}
.node-chip{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.node-chip label,.node-chip span{display:block;text-align:center;padding:12px 4px;border-radius:12px;background:#f4f9fc;border:1px solid #e3edf4;font-size:13.5px;font-weight:600;color:#33495e;transition:.2s}
.node-chip label:hover,.node-chip span:hover{border-color:var(--brand);color:var(--brand)}
.node-table{width:100%;border-collapse:collapse;font-size:14px;margin-top:16px}
.node-table th,.node-table td{text-align:left;padding:11px 8px;border-bottom:1px solid var(--line)}
.node-table th{font-size:12.5px;color:#7a8fa2;font-weight:600;letter-spacing:.04em}
.node-table td b{color:var(--brand)}
.tech-list{display:grid;gap:14px}
.tech-item{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 18px}
.tech-item .n{width:36px;height:36px;flex:none;border-radius:10px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800;font-size:14px}
.tech-item h4{font-size:16px;margin-bottom:4px}
.tech-item p{font-size:13.5px;color:var(--muted)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;position:relative;overflow:hidden}
.step::before{content:attr(data-n);position:absolute;right:16px;top:2px;font-size:64px;font-weight:900;color:rgba(47,107,255,.07);line-height:1}
.step h3{font-size:19px;margin:12px 0 8px}
.step p{font-size:14px;color:var(--muted)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.plan{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px 26px;display:flex;flex-direction:column;position:relative;transition:.28s}
.plan:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.plan.hot{border:2px solid transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;box-shadow:0 18px 44px rgba(47,107,255,.16)}
.plan .badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:5px 16px;border-radius:999px;white-space:nowrap}
.plan h3{font-size:17px;color:var(--muted);font-weight:700}
.plan .amt{font-size:42px;font-weight:800;margin:10px 0 2px;letter-spacing:-.03em}
.plan .amt small{font-size:15px;font-weight:600;color:#7a8fa2}
.plan .sub{font-size:13px;color:var(--muted);margin-bottom:18px}
.plan ul{display:grid;gap:10px;margin-bottom:24px;font-size:14px;color:#3b5266}
.plan ul li{display:flex;gap:8px}
.plan ul li::before{content:"✓";color:var(--brand);font-weight:800}
.plan .btn{margin-top:auto;width:100%}
.faq{max-width:880px;margin:0 auto;display:grid;gap:12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.faq summary{list-style:none;cursor:pointer;padding:20px 52px 20px 22px;font-weight:700;font-size:16px;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--brand);font-weight:400;transition:.25s}
.faq details[open] summary::after{content:"−"}
.faq .ans{padding:0 22px 20px;color:var(--muted);font-size:14.5px}
.faq .ans ol{counter-reset:s;display:grid;gap:6px;margin-top:8px}
.faq .ans ol li{counter-increment:s;display:flex;gap:8px}
.faq .ans ol li::before{content:counter(s);flex:none;width:20px;height:20px;border-radius:50%;background:rgba(15,179,165,.12);color:var(--brand);font-size:12px;font-weight:700;display:grid;place-items:center;margin-top:4px}
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px}
.quote .stars{color:#f5a623;font-size:15px;letter-spacing:2px;margin-bottom:12px}
.quote p{font-size:14.5px;color:#3b5266;margin-bottom:18px}
.quote .who{display:flex;align-items:center;gap:10px}
.quote .av{width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700}
.quote .who b{display:block;font-size:14.5px}
.quote .who span{font-size:12.5px;color:#8098ab}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.28s}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#dfeaf1}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .thumb img{transform:scale(1.05)}
.news-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.news-card .meta{font-size:12px;color:#8ba2b4;display:flex;gap:10px;margin-bottom:8px}
.news-card .meta i{font-style:normal;color:var(--brand);font-weight:700}
.news-card h3{font-size:16.5px;margin-bottom:8px}
.news-card p{font-size:13.5px;color:var(--muted);flex:1}
.news-card .more{margin-top:14px;color:var(--brand);font-weight:700;font-size:13.5px}
.cta{background:radial-gradient(700px 320px at 20% 10%,#0e4d63,transparent 60%),linear-gradient(120deg,#061c2d,#0a3350);color:#fff;text-align:center;border-radius:28px;padding:60px 24px;margin:0 auto;max-width:1180px}
.cta h2{font-size:34px;margin-bottom:12px}
.cta p{color:#b6cddc;margin-bottom:26px}
.cta .hero-btns{justify-content:center;margin-bottom:0}
footer{background:#061625;color:#a9c0d0;padding:64px 0 0;margin-top:84px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:20px;margin-bottom:14px}
.foot-brand img{width:34px;height:34px;border-radius:8px;background:#fff}
.foot-grid p{font-size:13.5px;color:#8fa9bb;max-width:330px}
.foot-grid h4{color:#fff;font-size:15px;margin-bottom:14px}
.foot-grid ul{display:grid;gap:9px;font-size:13.5px}
.foot-grid ul a:hover{color:#57f5dd}
.copy{border-top:1px solid rgba(255,255,255,.09);margin-top:44px;padding:20px 0;font-size:13px;color:#8ba4b6;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}
.copy a:hover{color:#57f5dd}
.totop{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;display:none;place-items:center;font-size:18px;z-index:900;border:0;cursor:pointer;box-shadow:0 10px 24px rgba(47,107,255,.32)}
.totop.show{display:grid}
.page-hero{background:linear-gradient(150deg,#061a2b,#0b3b52);color:#fff;padding:140px 0 64px;text-align:center}
.page-hero h1{font-size:40px;margin-bottom:12px}
.page-hero p{color:#b6cddc;max-width:680px;margin:0 auto;font-size:16px}
.crumb{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;font-size:13px;color:#93b2c4;margin-top:16px}
.crumb a:hover{color:#fff}
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:34px;align-items:start;padding:56px 0 20px}
.article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:36px;min-width:0}
.article .kicker{display:flex;flex-wrap:wrap;gap:10px;font-size:13px;color:#8098ab;margin-bottom:14px}
.article .kicker i{font-style:normal;background:rgba(15,179,165,.1);color:var(--brand);padding:3px 10px;border-radius:999px;font-weight:700}
.article h1{font-size:31px;margin-bottom:16px}
.lead-box{border-left:4px solid var(--brand);background:#f5fafd;padding:16px 20px;border-radius:0 12px 12px 0;font-size:15px;color:#33495e;margin-bottom:24px}
.article h2{font-size:22px;margin:30px 0 12px;padding-left:12px;border-left:4px solid var(--brand)}
.article p{font-size:15.5px;color:#33495e;margin-bottom:16px}
.article figure{margin:24px 0}
.article figure img{width:100%;border-radius:14px}
.article figcaption{font-size:12.5px;color:#8098ab;margin-top:8px;text-align:center}
.article blockquote{margin:22px 0;padding:18px 22px;background:#f5fafd;border-radius:12px;border-left:4px solid var(--brand2);font-size:15px;color:#2b3f52}
.article blockquote b{display:block;color:var(--brand);font-size:13px;margin-top:8px}
.share-row{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0 8px;align-items:center;font-size:13.5px;color:#8098ab}
.share-row a{border:1px solid var(--line);padding:6px 14px;border-radius:999px;font-weight:600;color:#33495e}
.share-row a:hover{border-color:var(--brand);color:var(--brand)}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px;border-top:1px dashed var(--line);padding-top:22px}
.pager a{background:#f7fbfd;border:1px solid var(--line);border-radius:12px;padding:14px 16px;font-size:14px;color:#33495e}
.pager a:hover{border-color:var(--brand);color:var(--brand)}
.pager span{font-size:12px;color:#8ba2b4;display:block}
.relate{margin-top:30px}
.relate h3{font-size:17px;margin-bottom:12px}
.relate ul{display:grid;gap:8px}
.relate li a{font-size:14.5px;color:#33495e;display:flex;gap:8px}
.relate li a::before{content:"›";color:var(--brand);font-weight:800}
.relate li a:hover{color:var(--brand)}
.comments{margin-top:34px;border-top:1px solid var(--line);padding-top:26px}
.comments h3{font-size:18px;margin-bottom:18px}
.cmt{display:flex;gap:12px;margin-bottom:18px}
.cmt .av{width:40px;height:40px;flex:none;border-radius:50%;background:linear-gradient(135deg,#12b6a6,#2f6bff);color:#fff;display:grid;place-items:center;font-weight:700;font-size:15px}
.cmt .top{display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.cmt .top b{font-size:14.5px}
.cmt .top span{font-size:12px;color:#8ba2b4}
.cmt p{font-size:14px;color:#3b5266;margin:4px 0 0}
.side{position:sticky;top:92px;display:grid;gap:18px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 18px;box-shadow:0 4px 14px rgba(12,34,54,.04)}
.side-card h4{font-size:15px;margin-bottom:14px;padding-left:10px;border-left:4px solid var(--brand);line-height:1.2}
.toc{position:relative;padding-left:18px}
.toc::before{content:"";position:absolute;left:4px;top:6px;bottom:6px;width:2px;background:#e6eff5;border-radius:2px}
.toc a{position:relative;display:block;padding:7px 0;font-size:13.5px;color:#4d6579}
.toc a::before{content:"";position:absolute;left:-18px;top:15px;width:8px;height:8px;border-radius:50%;background:#cfdfe9;border:2px solid #fff}
.toc a:hover,.toc a.on{color:var(--brand);font-weight:700}
.toc a.on::before{background:var(--brand)}
.hot-list{display:grid;gap:12px}
.hot-list a{display:flex;gap:10px;font-size:13.5px;color:#33495e;line-height:1.5}
.hot-list b{flex:none;width:20px;height:20px;border-radius:6px;background:#c9d7e2;color:#fff;font-size:11px;display:grid;place-items:center;transition:.2s}
.hot-list a:hover b{transform:scale(1.15)}
.hot-list a:hover{color:var(--brand)}
.hot-list a:nth-child(1) b{background:var(--brand)}
.hot-list a:nth-child(2) b{background:#f5a623}
.hot-list a:nth-child(3) b{background:#d8a136}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags a,.tags span{border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:12.5px;color:#4d6579;transition:.2s}
.tags span:hover{border-color:var(--brand);color:var(--brand);background:rgba(15,179,165,.06);cursor:pointer}
.news-list{display:grid;gap:20px;padding:48px 0 20px}
.news-row{display:grid;grid-template-columns:280px 1fr;gap:24px;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.25s}
.news-row:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.news-row .thumb{aspect-ratio:16/9}
.news-row .thumb img{width:100%;height:100%;object-fit:cover}
.news-row .body{padding:22px 24px 22px 0}
.news-row h3{font-size:19px;margin:8px 0 8px}
.news-row p{font-size:14px;color:var(--muted)}
.news-row .meta{font-size:12.5px;color:#8098ab;display:flex;gap:12px}
.news-row .meta i{font-style:normal;color:var(--brand);font-weight:700}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.dl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;display:flex;flex-direction:column}
.dl-card .ver{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.dl-card .ver b{font-size:18px}
.dl-card .ver span{font-size:12px;color:#fff;background:var(--grad);padding:3px 10px;border-radius:999px}
.dl-card ul{display:grid;gap:8px;font-size:13.5px;color:#3b5266;margin:14px 0 20px}
.dl-card ul li::before{content:"·";color:var(--brand);font-weight:800;margin-right:6px}
.dl-card .btn{width:100%}
.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sys{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}
.sys b{display:block;font-size:12.5px;color:#8098ab;font-weight:600;margin-bottom:6px}
.sys span{font-size:15px;font-weight:700;color:#22394d}
.doc{max-width:880px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:20px;padding:40px;margin-top:44px;margin-bottom:20px}
.doc h2{font-size:21px;margin:26px 0 10px;padding-left:12px;border-left:4px solid var(--brand)}
.doc h2:first-child{margin-top:0}
.doc p,.doc li{font-size:15px;color:#3b5266;margin-bottom:10px}
.doc ul{list-style:disc;padding-left:22px;margin-bottom:10px}
.doc .note{background:#f5fafd;border-radius:12px;padding:16px 18px;font-size:13.5px;color:#4d6579}
.sitemap-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.sitemap-cols h3{font-size:17px;margin-bottom:14px;padding-left:10px;border-left:4px solid var(--brand)}
.sitemap-cols ul{display:grid;gap:8px;font-size:14px}
.sitemap-cols ul a{color:#3b5266}
.sitemap-cols ul a:hover{color:var(--brand)}
.err{min-height:70vh;display:grid;place-items:center;text-align:center;padding:140px 24px 60px}
.err .code{font-size:120px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.err h1{font-size:30px;margin:10px 0 12px}
.err p{color:var(--muted);margin-bottom:24px}
html.js .reveal{opacity:0;transform:translateY(22px)}
html.js .reveal.in{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease}
@media(max-width:992px){
section{padding:64px 0}
.hero{padding:120px 0 70px}
.hero-grid{grid-template-columns:1fr;gap:36px}
.hero h1{font-size:38px}
.hero-stats{max-width:none}
.g4,.g3,.steps,.price-grid,.quotes,.news-grid,.dl-grid,.sys-grid,.sitemap-cols{grid-template-columns:repeat(2,1fr)}
.speed-grid{grid-template-columns:repeat(2,1fr);gap:24px}
.nodes-wrap{grid-template-columns:1fr}
.article-wrap{grid-template-columns:1fr}
.side{position:static}
.news-row{grid-template-columns:220px 1fr}
.foot-grid{grid-template-columns:1fr 1fr}
.article{padding:26px 22px}
}
@media(max-width:768px){
.sec-head h2{font-size:28px}
.hero h1{font-size:32px}
.g4,.g3,.steps,.price-grid,.quotes,.news-grid,.dl-grid,.sys-grid,.sitemap-cols,.g2{grid-template-columns:1fr}
.news-row{grid-template-columns:1fr}
.news-row .body{padding:0 20px 20px}
.article h1{font-size:24px}
.article h2{font-size:19px}
.page-hero h1{font-size:29px}
.pager{grid-template-columns:1fr}
.doc{padding:24px 18px}
.cta{padding:44px 20px;border-radius:20px}
.cta h2{font-size:26px}
}
@media(max-width:480px){
.wrap{padding:0 16px}
.hero{padding:108px 0 56px}
.hero h1{font-size:27px}
.hero .lead{font-size:15px}
.hero-btns .btn{width:100%}
.hero-stats{grid-template-columns:1fr 1fr}
.hero-stats div:nth-child(3){grid-column:1/-1}
.speed-grid{grid-template-columns:1fr 1fr}
.speed-grid b{font-size:26px}
.card,.plan,.quote{padding:22px 18px}
.node-chip{grid-template-columns:repeat(3,1fr)}
.demo{padding:12px}
.dial svg{width:160px;height:160px}
.node-pick{grid-template-columns:repeat(2,1fr)}
.section{padding:52px 0}
.foot-grid{grid-template-columns:1fr;gap:26px}
.copy{flex-direction:column}
.article-wrap{padding:30px 0 10px}
.article{padding:22px 16px}
}