:root{--p:#ff6b00;--p2:#ffa800;--ac:#00c8ff;--dk:#0b1220;--dk2:#111a2e;--tx:#0f172a;--mu:#64748b;--bg:#fff;--soft:#f6f8fb;--line:#e7ecf3;--r:16px;--sh:0 20px 50px -20px rgba(11,18,32,.35);--gr:linear-gradient(135deg,#ff6b00,#ffa800)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--tx);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.h1,.h2{line-height:1.2;font-weight:800;letter-spacing:-.5px}
.h1{font-size:54px}
.h2{font-size:38px;text-align:center}
.lead{color:var(--mu);font-size:18px}
.grad-t{background:var(--gr);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:50px;font-weight:700;font-size:16px;cursor:pointer;transition:.25s;border:none;white-space:nowrap}
.btn.grad{background:var(--gr);color:#fff;box-shadow:0 12px 26px -10px rgba(255,107,0,.55)}
.btn.grad:hover{transform:translateY(-2px);box-shadow:0 16px 30px -10px rgba(255,107,0,.7)}
.btn.ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.45)}
.btn.ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn.dark{background:#0b1220;color:#fff}
.btn.dark:hover{background:#1b2740}
.btn.lg{padding:16px 36px;font-size:17px}
.section{padding:90px 0}
.sec-head{max-width:720px;margin:0 auto 56px;text-align:center}
.sec-head .tag{display:inline-block;padding:6px 16px;border-radius:50px;background:rgba(255,107,0,.1);color:var(--p);font-weight:700;font-size:13px;letter-spacing:1px;margin-bottom:16px}
.sec-head .h2{margin-bottom:14px}
.sec-head p{color:var(--mu);font-size:17px}
.sec-soft{background:var(--soft)}
.icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px}
.icon.o{background:linear-gradient(135deg,rgba(255,107,0,.14),rgba(255,168,0,.14));color:var(--p)}
.icon.b{background:linear-gradient(135deg,rgba(0,200,255,.14),rgba(0,120,255,.14));color:#0090e0}
.icon.g{background:linear-gradient(135deg,rgba(22,190,130,.14),rgba(0,180,140,.14));color:#0aa06f}
.icon.v{background:linear-gradient(135deg,rgba(140,90,255,.14),rgba(90,60,220,.14));color:#7a4df0}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:.3s;padding:18px 0}
.nav.scrolled{background:rgba(8,14,26,.92);backdrop-filter:blur(12px);box-shadow:0 8px 30px rgba(0,0,0,.25);padding:10px 0}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:#fff}
.brand img{width:36px;height:36px;border-radius:8px}
.menu{display:flex;align-items:center;gap:6px}
.menu>ul{display:flex;align-items:center;gap:2px}
.menu>ul>li{position:relative}
.menu>ul>li>a{display:flex;align-items:center;gap:6px;color:rgba(255,255,255,.86);font-size:15px;font-weight:600;padding:10px 14px;border-radius:10px;transition:.2s}
.menu>ul>li>a:hover{color:#fff;background:rgba(255,255,255,.08)}
.menu .arrow{font-size:11px;transition:.3s;display:inline-block}
.menu li.has-drop:hover>.drop-trigger .arrow{transform:rotate(180deg)}
.drop-panel{position:absolute;top:100%;left:0;min-width:190px;background:#fff;border-radius:14px;box-shadow:var(--sh);padding:10px;opacity:0;visibility:hidden;transform:translateY(12px);transition:.25s;z-index:120}
.menu li.has-drop:hover .drop-panel{opacity:1;visibility:visible;transform:translateY(6px)}
.drop-panel a{display:block;padding:9px 14px;border-radius:9px;color:var(--tx);font-size:14px;font-weight:600;transition:.15s}
.drop-panel a:hover{background:rgba(255,107,0,.08);color:var(--p)}
.nav-btns{display:flex;align-items:center;gap:10px;margin-left:14px}
.nav-btns .btn{padding:10px 22px;font-size:14px}
.burger{display:none;background:none;border:none;cursor:pointer;width:40px;height:40px;position:relative;z-index:130}
.burger span{display:block;width:24px;height:2px;background:#fff;margin:5px auto;transition:.3s;border-radius:2px}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.hero{position:relative;padding:150px 0 90px;background:radial-gradient(1200px 600px at 85% -10%,#17305c 0%,transparent 60%),radial-gradient(900px 500px at 0% 20%,#1b1f3a 0%,transparent 55%),var(--dk);color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Ccircle cx='1' cy='1' r='1' fill='%23ffffff' fill-opacity='0.05'/%3E%3C/svg%3E")}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero .h1{font-size:56px;margin-bottom:20px}
.hero .h1 em{font-style:normal}
.hero .lead{margin-bottom:34px;color:rgba(255,255,255,.75);font-size:19px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px}
.hero-stats{display:flex;gap:36px}
.stat .num{font-size:32px;font-weight:800;color:#fff}
.stat .lbl{font-size:13px;color:rgba(255,255,255,.6)}
.sim{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:24px;padding:26px;backdrop-filter:blur(8px)}
.sim-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.sim-dots{display:flex;gap:6px}
.sim-dots i{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.25)}
.sim-dots i:first-child{background:#ff5f57}
.sim-dots i:nth-child(2){background:#febc2e}
.sim-dots i:nth-child(3){background:#28c840}
.sim-status{font-size:13px;color:rgba(255,255,255,.7);display:flex;align-items:center;gap:7px}
.dot{width:8px;height:8px;border-radius:50%;background:#28c840;box-shadow:0 0 0 0 rgba(40,200,64,.6);animation:pulse 1.8s infinite}
.sim-gauge{text-align:center;padding:16px 0 22px}
.gauge{position:relative;width:190px;height:190px;margin:0 auto}
.gauge svg{transform:rotate(-90deg)}
.gauge .track{fill:none;stroke:rgba(255,255,255,.12);stroke-width:12}
.gauge .bar{fill:none;stroke:url(#g);stroke-width:12;stroke-linecap:round;transition:stroke-dashoffset 1.2s ease}
.gauge .gval{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.gauge .gval b{font-size:40px;font-weight:800}
.gauge .gval span{font-size:12px;color:rgba(255,255,255,.6)}
.sim-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-top:1px solid rgba(255,255,255,.08);font-size:14px}
.sim-row span{color:rgba(255,255,255,.65)}
.sim-row b{color:#fff}
.sim-switch{position:relative;width:44px;height:24px;background:rgba(255,255,255,.2);border-radius:50px;cursor:pointer;transition:.25s}
.sim-switch::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;background:#fff;border-radius:50%;transition:.25s}
.sim-switch.on{background:var(--gr)}
.sim-switch.on::after{left:23px}
.sim-connect{width:100%;margin-top:18px}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(40,200,64,.6)}70%{box-shadow:0 0 0 12px rgba(40,200,64,0)}100%{box-shadow:0 0 0 0 rgba(40,200,64,0)}}

.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.step-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px 30px;position:relative;transition:.3s}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--sh);border-color:transparent}
.step-card .n{position:absolute;top:20px;right:24px;font-size:52px;font-weight:800;color:var(--soft);line-height:1}
.step-card h3{font-size:20px;margin-bottom:10px}
.step-card p{color:var(--mu);font-size:15px}

.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;transition:.3s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--sh);border-color:transparent}
.feature-card h3{font-size:19px;margin-bottom:10px}
.feature-card p{color:var(--mu);font-size:15px}

.nodes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:50px}
.node-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;display:flex;align-items:center;gap:16px;transition:.3s}
.node-card:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.node-card .flag{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.node-card h4{font-size:16px}
.node-card p{font-size:13px;color:var(--mu)}
.node-card .lat{margin-left:auto;font-weight:800;color:var(--p);font-size:13px}
.perf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:20px}
.perf{background:linear-gradient(135deg,#fff,var(--soft));border:1px solid var(--line);border-radius:var(--r);padding:30px;text-align:center}
.perf .num{font-size:36px;font-weight:800;color:var(--p)}
.perf .lbl{font-size:14px;color:var(--mu);margin-top:4px}

.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.scenario-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;transition:.3s}
.scenario-card:hover{transform:translateY(-6px);box-shadow:var(--sh)}
.scenario-card h3{font-size:18px;margin-bottom:10px}
.scenario-card p{color:var(--mu);font-size:15px}

.protocols{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.protocol{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:50px;background:#fff;border:1px solid var(--line);font-weight:700;font-size:15px;transition:.25s}
.protocol:hover{border-color:var(--p);color:var(--p);transform:translateY(-3px);box-shadow:var(--sh)}

.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:stretch}
.price-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:38px 32px;position:relative;display:flex;flex-direction:column;transition:.3s}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--sh)}
.price-card.pop{background:linear-gradient(160deg,#0b1220,#182343);color:#fff;border:none;transform:scale(1.04);box-shadow:var(--sh)}
.price-card.pop:hover{transform:scale(1.04) translateY(-6px)}
.price-card .badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--gr);color:#fff;padding:5px 18px;border-radius:50px;font-size:13px;font-weight:700}
.price-card h3{font-size:20px;margin-bottom:6px}
.price-card .sub{font-size:14px;color:var(--mu);margin-bottom:22px}
.price-card.pop .sub{color:rgba(255,255,255,.6)}
.price-card .price{font-size:44px;font-weight:800;margin-bottom:4px}
.price-card .price span{font-size:16px;font-weight:600}
.price-card .per{font-size:13px;color:var(--mu);margin-bottom:26px}
.price-card.pop .per{color:rgba(255,255,255,.6)}
.price-card ul{flex:1;margin-bottom:28px}
.price-card ul li{padding:9px 0;font-size:15px;display:flex;gap:10px;align-items:flex-start;color:var(--tx)}
.price-card.pop ul li{color:rgba(255,255,255,.9)}
.price-card ul li::before{content:"✓";color:var(--p);font-weight:800;flex-shrink:0}
.price-card.pop ul li::before{color:var(--p2)}
.price-card .btn{width:100%}

.faq-list{max-width:840px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:20px 24px;font-size:17px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--tx)}
.faq-q .farrow{transition:.3s;color:var(--p);font-size:18px}
.faq-item.open .farrow{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 24px 22px;color:var(--mu);font-size:15px}
.faq-a ol{margin-left:20px}
.faq-a ol li{margin:8px 0}

.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--sh)}
.news-card img{width:100%;height:190px;object-fit:cover}
.news-card .nc-body{padding:22px}
.news-card .date{font-size:13px;color:var(--mu)}
.news-card h3{font-size:17px;margin:8px 0 10px;line-height:1.5}
.news-card p{font-size:14px;color:var(--mu);flex:1}
.news-card .more{color:var(--p);font-weight:700;font-size:14px;margin-top:14px;display:inline-block}

.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.testi{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px}
.testi .stars{color:#ffb300;font-size:18px;letter-spacing:2px;margin-bottom:14px}
.testi p{color:var(--tx);font-size:15px;margin-bottom:20px}
.testi .who{display:flex;align-items:center;gap:12px}
.testi .ava{width:44px;height:44px;border-radius:50%;background:var(--gr);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.testi .who b{font-size:15px;display:block}
.testi .who span{font-size:13px;color:var(--mu)}

.cta{background:radial-gradient(900px 500px at 50% -10%,#1d3463 0%,transparent 60%),var(--dk);color:#fff;text-align:center;padding:90px 24px}
.cta .h2{font-size:44px;margin-bottom:16px}
.cta p{color:rgba(255,255,255,.7);font-size:18px;margin-bottom:32px}
.cta .btn{margin:0 6px}

.footer{background:#070b14;color:rgba(255,255,255,.75);padding:70px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:50px}
.footer .brand{color:#fff;margin-bottom:16px}
.footer .about{font-size:14px;color:rgba(255,255,255,.55);max-width:280px}
.footer h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer ul li{margin:10px 0}
.footer ul li a{color:rgba(255,255,255,.6);font-size:14px;transition:.2s}
.footer ul li a:hover{color:var(--p2)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.45)}

.page-hero{background:var(--dk);color:#fff;padding:140px 0 70px;text-align:center}
.page-hero .h1{font-size:44px;margin-bottom:12px}
.page-hero p{color:rgba(255,255,255,.7);font-size:17px}
.crumb{font-size:13px;color:rgba(255,255,255,.55);margin-bottom:16px}
.crumb a{color:rgba(255,255,255,.8)}

.dl-hero{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;padding:60px 0}
.dl-hero .lead{margin:18px 0 28px}
.dl-meta{display:flex;gap:30px;margin-top:30px;flex-wrap:wrap}
.dl-meta .m b{display:block;font-size:22px}
.dl-meta .m span{font-size:13px;color:var(--mu)}
.ver-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.ver-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;display:flex;flex-direction:column}
.ver-card .ver{font-size:15px;font-weight:800;color:var(--p);margin-bottom:6px}
.ver-card .size{font-size:13px;color:var(--mu);margin-bottom:18px}
.ver-card ul{flex:1;margin-bottom:22px}
.ver-card ul li{padding:7px 0;font-size:14px;display:flex;gap:8px;align-items:flex-start}
.ver-card ul li::before{content:"✓";color:var(--p);font-weight:800}
.ver-card .btn{width:100%}
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.req{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px}
.req h4{font-size:16px;margin-bottom:6px}
.req p{font-size:14px;color:var(--mu)}
.install-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.install-step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px 24px;text-align:center;position:relative}
.install-step .sn{width:40px;height:40px;border-radius:50%;background:var(--gr);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:18px}
.install-step h4{font-size:17px;margin-bottom:8px}
.install-step p{font-size:14px;color:var(--mu)}

.article{max-width:820px;margin:0 auto}
.article .meta{display:flex;gap:16px;color:var(--mu);font-size:14px;margin:14px 0 22px;flex-wrap:wrap}
.article .meta .cat{color:var(--p);font-weight:700}
.article .cover{border-radius:18px;margin-bottom:30px;width:100%}
.article h2{font-size:26px;margin:36px 0 14px;line-height:1.3}
.article p{margin-bottom:18px;color:#334155;font-size:16.5px}
.article img.inline{border-radius:12px;margin:24px 0;width:100%}
.article .cite{border-left:4px solid var(--p);background:var(--soft);padding:18px 22px;border-radius:0 12px 12px 0;margin:24px 0;color:#334155}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin:50px 0;flex-wrap:wrap}
.article-nav a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;flex:1;min-width:220px;transition:.2s;font-size:14px}
.article-nav a:hover{border-color:var(--p);color:var(--p)}
.article-nav a.next{text-align:right}
.article-nav small{display:block;color:var(--mu);margin-bottom:6px}
.back{display:inline-flex;align-items:center;gap:6px;color:var(--p);font-weight:700;margin-bottom:24px}

.map-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:30px}
.map-list a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;transition:.2s;font-weight:600}
.map-list a:hover{border-color:var(--p);color:var(--p)}

.err-wrap{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px;background:var(--dk);color:#fff}
.err-wrap .code{font-size:120px;font-weight:800;background:var(--gr);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.err-wrap h1{font-size:28px;margin:10px 0 14px}
.err-wrap p{color:rgba(255,255,255,.7);margin-bottom:28px}
.err-wrap .back-btn{color:#fff}

.reveal{opacity:0;transform:translateY(30px);transition:.7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

@media(max-width:992px){
.burger{display:block}
.menu{position:fixed;top:0;right:-320px;width:300px;height:100vh;background:#0b1220;flex-direction:column;align-items:stretch;padding:90px 24px 30px;transition:.35s;gap:0;overflow-y:auto}
.menu.open{right:0;box-shadow:-20px 0 60px rgba(0,0,0,.4)}
.menu>ul{flex-direction:column;align-items:stretch;gap:4px}
.menu>ul>li>a{color:#fff;padding:13px 14px;justify-content:space-between}
.drop-panel{position:static;background:rgba(255,255,255,.04);box-shadow:none;padding:0 0 0 10px;opacity:1;visibility:visible;transform:none;max-height:0;overflow:hidden;transition:max-height .3s;min-width:0}
.menu li.has-drop.open .drop-panel{max-height:400px}
.menu li.has-drop.open>.drop-trigger .arrow{transform:rotate(180deg)}
.drop-panel a{color:rgba(255,255,255,.75)}
.drop-panel a:hover{color:var(--p2)}
.nav-btns{flex-direction:column;margin:20px 0 0}
.nav-btns .btn{width:100%}
.nav-btns .btn.ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.hero-grid,.dl-hero{grid-template-columns:1fr;gap:40px}
.hero .h1{font-size:44px}
.h1{font-size:40px}
.h2{font-size:32px}
.steps-grid,.features-grid,.nodes-grid,.scenario-grid,.pricing-grid,.news-grid,.testi-grid,.ver-grid,.req-grid{grid-template-columns:repeat(2,1fr)}
.perf-grid{grid-template-columns:repeat(2,1fr)}
.install-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.price-card.pop{transform:none}
.price-card.pop:hover{transform:translateY(-6px)}
}
@media(max-width:768px){
.section{padding:60px 0}
.hero{padding:120px 0 60px}
.hero .h1{font-size:36px}
.h2{font-size:28px}
.hero-stats{gap:22px}
.stat .num{font-size:26px}
.steps-grid,.features-grid,.nodes-grid,.scenario-grid,.pricing-grid,.news-grid,.testi-grid,.ver-grid,.req-grid{grid-template-columns:1fr}
.map-list{grid-template-columns:1fr}
.cta .h2{font-size:32px}
.page-hero .h1{font-size:34px}
}
@media(max-width:480px){
.container{padding:0 18px}
.hero .h1{font-size:30px}
.h1{font-size:30px}
.hero-btns{flex-direction:column}
.hero-btns .btn{width:100%}
.perf-grid{grid-template-columns:1fr 1fr}
.footer-grid{grid-template-columns:1fr}
.dl-meta{gap:18px}
.article h2{font-size:22px}
.err-wrap .code{font-size:80px}
}