:root{--c1:#3d6bff;--c2:#7b3dff;--c3:#00d4ff;--ink:#0e1530;--ink2:#4a5578;--line:#e6eaf5;--bg:#f6f8fd;--w:#fff;--grad:linear-gradient(135deg,#3d6bff 0%,#7b3dff 100%);--grad2:linear-gradient(135deg,#00d4ff 0%,#3d6bff 100%);--r:18px;--sh:0 18px 50px rgba(30,50,120,.12)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.container-sm{max-width:1000px}
.section{padding:96px 0}
.section-alt{background:var(--w)}
.sec-head{max-width:720px;margin:0 auto 56px;text-align:center}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--c1);background:rgba(61,107,255,.08);padding:7px 16px;border-radius:999px;margin-bottom:18px}
.sec-head h2{font-size:clamp(28px,4vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.5px;margin-bottom:16px}
.sec-head p{color:var(--ink2);font-size:17px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:16px;padding:14px 30px;border-radius:14px;cursor:pointer;border:0;transition:.25s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 28px rgba(61,107,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(61,107,255,.45)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--c1);color:var(--c1)}
.btn-white{background:#fff;color:var(--ink);box-shadow:0 12px 28px rgba(0,0,0,.18)}
.btn-white:hover{transform:translateY(-2px)}
.btn-lg{padding:17px 36px;font-size:17px;border-radius:16px}
/* ===== 导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;transition:.3s;padding:18px 0;background:transparent}
.nav.scrolled{background:rgba(10,14,39,.85);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);padding:12px 0;box-shadow:0 6px 24px rgba(0,0,0,.18)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:21px;color:#fff;letter-spacing:-.3px}
.brand img{height:38px;width:auto;border-radius:9px}
.menu{display:flex;align-items:center;gap:6px}
.menu>li{position:relative}
.menu>li>a{display:flex;align-items:center;gap:5px;padding:9px 14px;border-radius:10px;color:rgba(255,255,255,.86);font-weight:600;font-size:15px;cursor:pointer;transition:.2s}
.menu>li>a:hover{color:#fff;background:rgba(255,255,255,.1)}
.menu>li>a .arr{font-size:11px;transition:transform .3s;display:inline-block}
.menu>li:hover>a .arr,.menu>li.open>a .arr{transform:rotate(180deg)}
.drop{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(10px);background:#fff;border-radius:16px;box-shadow:0 24px 60px rgba(20,30,80,.18);min-width:230px;padding:10px;opacity:0;visibility:hidden;transition:.25s}
.drop:before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}
.menu>li:hover .drop,.menu>li.open .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop a{display:block;padding:10px 14px;border-radius:10px;color:var(--ink);font-weight:500;font-size:14px;transition:.2s}
.drop a:hover{background:var(--bg);color:var(--c1)}
.drop .drop-title{font-size:11px;color:#9aa3bd;text-transform:uppercase;letter-spacing:1px;padding:6px 14px 4px}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .btn{padding:10px 20px;font-size:14px}
.hamb{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.hamb span{width:26px;height:2.5px;background:#fff;border-radius:2px;transition:.3s}
.hamb.active span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.hamb.active span:nth-child(2){opacity:0}
.hamb.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
/* ===== Hero ===== */
.hero{position:relative;padding:150px 0 90px;background:radial-gradient(1200px 600px at 80% -10%,#2b3b8f 0%,transparent 60%),radial-gradient(900px 500px at 0% 20%,#452b8f 0%,transparent 55%),linear-gradient(160deg,#0a0e27 0%,#111a44 55%,#0a0e27 100%);color:#fff;overflow:hidden}
.hero:after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:28px 28px;pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero h1{font-size:clamp(34px,5vw,58px);line-height:1.12;font-weight:800;letter-spacing:-1px;margin-bottom:20px}
.hero h1 .grad-text{background:linear-gradient(135deg,#4dffd2,#00d4ff 50%,#6b9bff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{font-size:19px;color:rgba(255,255,255,.78);max-width:520px;margin-bottom:30px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:36px}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.hero-stats .hs b{display:block;font-size:30px;font-weight:800;background:var(--grad2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-stats .hs span{font-size:13px;color:rgba(255,255,255,.6)}
/* 模拟器 */
.sim{position:relative;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:22px;padding:26px;backdrop-filter:blur(10px)}
.sim-bar{display:flex;align-items:center;gap:8px;margin-bottom:18px}
.sim-bar i{width:11px;height:11px;border-radius:50%;background:#ff5f57}
.sim-bar i:nth-child(2){background:#febc2e}
.sim-bar i:nth-child(3){background:#28c840}
.sim-bar .sim-title{margin-left:8px;font-size:13px;color:rgba(255,255,255,.7)}
.sim-status{display:flex;align-items:center;justify-content:space-between;background:rgba(0,0,0,.25);border-radius:14px;padding:16px 18px;margin-bottom:16px}
.sim-status .on{display:flex;align-items:center;gap:9px;font-weight:700;font-size:16px}
.sim-status .dot{width:10px;height:10px;border-radius:50%;background:#28c840;box-shadow:0 0 0 4px rgba(40,200,64,.25);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.3)}}
.sim-toggle{display:inline-flex;align-items:center;gap:8px;background:var(--grad);border:0;color:#fff;font-weight:700;padding:8px 16px;border-radius:10px;cursor:pointer}
.sim-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.sim-metric{background:rgba(255,255,255,.06);border-radius:12px;padding:14px}
.sim-metric span{font-size:11px;color:rgba(255,255,255,.55);text-transform:uppercase;letter-spacing:1px}
.sim-metric b{display:block;font-size:22px;font-weight:800;margin-top:4px;color:#4dffd2}
.sim-nodes{display:flex;flex-wrap:wrap;gap:8px}
.node-chip{font-size:12px;font-weight:600;padding:7px 13px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.85);cursor:pointer;transition:.2s}
.node-chip.active{background:var(--grad);border-color:transparent}
.node-chip:hover{background:rgba(255,255,255,.16)}
/* ===== 卡片通用 ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.card{background:var(--w);border:1px solid var(--line);border-radius:var(--r);padding:30px;transition:.3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh)}
.icon-badge{width:58px;height:58px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:20px;background:var(--grad2);color:#fff}
.icon-badge.p2{background:linear-gradient(135deg,#7b3dff,#ff4d94)}
.icon-badge.p3{background:linear-gradient(135deg,#00d4ff,#28c840)}
.card h3{font-size:20px;font-weight:700;margin-bottom:10px}
.card p{color:var(--ink2);font-size:15px}
.step-num{width:52px;height:52px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;font-size:22px;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
/* 数据节点 */
.nodes-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.perf{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.perf-item{background:var(--w);border:1px solid var(--line);border-radius:var(--r);padding:26px;text-align:center}
.perf-item b{display:block;font-size:34px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.perf-item span{font-size:13px;color:var(--ink2)}
.region-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.region-card{background:var(--w);border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;align-items:center;gap:11px;transition:.25s;cursor:pointer}
.region-card:hover{border-color:var(--c1);box-shadow:var(--sh);transform:translateY(-3px)}
.region-card .flag{width:38px;height:38px;border-radius:10px;background:var(--grad2);display:flex;align-items:center;justify-content:center;font-size:19px;flex-shrink:0}
.region-card b{font-size:14px;display:block}
.region-card span{font-size:12px;color:var(--ink2)}
.region-card .lat{margin-left:auto;font-size:12px;color:#28c840;font-weight:700}
/* 协议标签 */
.tags{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.tag{display:inline-flex;align-items:center;gap:8px;background:var(--w);border:1px solid var(--line);border-radius:999px;padding:13px 24px;font-weight:600;font-size:15px;transition:.25s}
.tag:hover{border-color:var(--c1);color:var(--c1);transform:translateY(-3px);box-shadow:var(--sh)}
.tag i{width:9px;height:9px;border-radius:50%;background:var(--c3)}
/* 价格 */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch}
.plan{background:var(--w);border:1px solid var(--line);border-radius:22px;padding:36px 30px;position:relative;display:flex;flex-direction:column;transition:.3s}
.plan.hot{background:linear-gradient(180deg,#141c4d,#0e1530);color:#fff;border-color:transparent;transform:scale(1.04);box-shadow:0 30px 70px rgba(20,28,77,.35)}
.plan.hot:hover{transform:scale(1.04) translateY(-4px)}
.plan-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:6px 18px;border-radius:999px;white-space:nowrap}
.plan h3{font-size:19px;margin-bottom:6px}
.plan .plan-desc{font-size:13px;color:var(--ink2);margin-bottom:22px}
.plan.hot .plan-desc{color:rgba(255,255,255,.6)}
.plan .price{font-size:46px;font-weight:800;letter-spacing:-1px}
.plan .price small{font-size:16px;font-weight:500}
.plan .per{font-size:13px;color:var(--ink2)}
.plan.hot .per{color:rgba(255,255,255,.6)}
.plan ul{margin:24px 0 28px;flex:1}
.plan li{display:flex;align-items:center;gap:10px;padding:8px 0;font-size:14px;color:var(--ink)}
.plan.hot li{color:rgba(255,255,255,.85)}
.plan li:before{content:"✓";color:var(--c3);font-weight:800}
/* FAQ */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--w);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.25s}
.faq-item.open{border-color:var(--c1);box-shadow:var(--sh)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;cursor:pointer;font-weight:700;font-size:16px}
.faq-q .faq-icon{width:28px;height:28px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:18px;transition:.3s;flex-shrink:0;color:var(--c1)}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 24px 22px;color:var(--ink2);font-size:15px}
.faq-a-inner ol{padding-left:20px;margin-top:10px}
.faq-a-inner li{margin:6px 0}
/* 新闻 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:var(--w);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 .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:.5s}
.news-card:hover .thumb img{transform:scale(1.06)}
.news-card .cat{position:absolute;top:12px;left:12px;background:rgba(10,14,39,.8);color:#fff;font-size:11px;padding:5px 12px;border-radius:999px}
.news-card .nc-body{padding:22px;flex:1;display:flex;flex-direction:column}
.news-card .date{font-size:12px;color:var(--ink2);margin-bottom:8px}
.news-card h3{font-size:17px;font-weight:700;line-height:1.4;margin-bottom:10px}
.news-card p{font-size:14px;color:var(--ink2);flex:1}
.news-card .more{color:var(--c1);font-weight:700;font-size:14px;margin-top:14px}
/* 评价 */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.testi{background:var(--w);border:1px solid var(--line);border-radius:var(--r);padding:30px}
.testi .stars{color:#ffb020;font-size:18px;letter-spacing:2px;margin-bottom:14px}
.testi p{color:var(--ink2);font-size:15px;margin-bottom:22px}
.testi-user{display:flex;align-items:center;gap:12px}
.testi-user .av{width:46px;height:46px;border-radius:50%;background:var(--grad2);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:18px}
.testi-user b{display:block;font-size:15px}
.testi-user span{font-size:13px;color:var(--ink2)}
/* CTA */
.cta{background:radial-gradient(900px 500px at 50% 0%,#2b3b8f 0%,transparent 60%),linear-gradient(150deg,#0a0e27,#141c4d);color:#fff;text-align:center;padding:96px 0;border-radius:0}
.cta h2{font-size:clamp(28px,4.5vw,46px);font-weight:800;letter-spacing:-1px;margin-bottom:18px}
.cta p{color:rgba(255,255,255,.7);font-size:17px;margin-bottom:32px}
/* 页脚 */
.footer{background:#080b1e;color:rgba(255,255,255,.7);padding:70px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer .brand{color:#fff;margin-bottom:16px}
.footer-desc{font-size:14px;max-width:300px}
.footer h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer ul li{margin:10px 0}
.footer ul a{font-size:14px;transition:.2s}
.footer ul a:hover{color:#fff}
.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}
/* 面包屑 */
.crumb{background:var(--w);border-bottom:1px solid var(--line);padding:14px 0;font-size:14px;color:var(--ink2)}
.crumb a:hover{color:var(--c1)}
.crumb span{color:var(--ink)}
.page-inner .nav{background:rgba(10,14,39,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);padding:12px 0;box-shadow:0 6px 24px rgba(0,0,0,.18)}
.page-inner .crumb{padding-top:88px}
/* 文章 */
.article-wrap{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
.article{background:var(--w);border:1px solid var(--line);border-radius:var(--r);padding:40px}
.article h1{font-size:32px;line-height:1.3;margin-bottom:18px;font-weight:800}
.article .meta{display:flex;gap:18px;color:var(--ink2);font-size:13px;margin-bottom:26px;flex-wrap:wrap}
.article .meta .cat{color:var(--c1);font-weight:700}
.article img{border-radius:14px;margin:22px 0}
.article h2{font-size:23px;margin:30px 0 14px;font-weight:800}
.article p{margin:14px 0;color:#333c5c;font-size:16px;line-height:1.9}
.article .lead{font-size:18px;color:var(--ink2);font-weight:500}
.article .quote{border-left:4px solid var(--c1);background:var(--bg);padding:18px 22px;border-radius:0 12px 12px 0;margin:22px 0;color:var(--ink);font-style:italic}
.aside{position:sticky;top:90px}
.aside-box{background:var(--w);border:1px solid var(--line);border-radius:var(--r);padding:24px;margin-bottom:22px}
.aside-box h3{font-size:16px;margin-bottom:14px}
.aside-box a{display:block;font-size:14px;color:var(--ink2);padding:7px 0;border-bottom:1px dashed var(--line)}
.aside-box a:last-child{border-bottom:0}
.aside-box a:hover{color:var(--c1)}
.pager{display:flex;justify-content:space-between;gap:16px;margin-top:34px;flex-wrap:wrap}
.pager a{flex:1;min-width:200px;background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:16px 20px;font-size:14px;transition:.25s}
.pager a:hover{border-color:var(--c1);color:var(--c1)}
.pager a.next{text-align:right}
.pager span{display:block;font-size:12px;color:var(--ink2);margin-bottom:4px}
/* 下载页 */
.dl-ver{background:var(--w);border:1px solid var(--line);border-radius:var(--r);padding:30px;display:flex;flex-direction:column}
.dl-ver .ver{font-size:26px;font-weight:800}
.dl-ver .size{font-size:13px;color:var(--ink2);margin-bottom:18px}
.dl-ver ul{margin-bottom:22px;flex:1}
.dl-ver li{font-size:14px;padding:7px 0;color:var(--ink)}
.dl-ver li:before{content:"✓";color:var(--c3);font-weight:800;margin-right:8px}
.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sys-item{background:var(--w);border:1px solid var(--line);border-radius:14px;padding:22px;display:flex;align-items:center;gap:14px}
.sys-item .icon-badge{width:44px;height:44px;font-size:20px;margin-bottom:0}
.sys-item b{display:block;font-size:15px}
.sys-item span{font-size:13px;color:var(--ink2)}
/* 404 */
.err{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;background:linear-gradient(160deg,#0a0e27,#111a44);color:#fff;padding:24px}
.err h1{font-size:120px;font-weight:800;background:var(--grad2);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.err p{font-size:20px;margin:20px 0 30px;color:rgba(255,255,255,.7)}
/* 站点地图 */
.sitemap{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.sitemap .col{background:var(--w);border:1px solid var(--line);border-radius:var(--r);padding:28px}
.sitemap h3{font-size:18px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.sitemap a{display:block;font-size:15px;color:var(--ink2);padding:9px 0;border-bottom:1px dashed var(--line)}
.sitemap a:last-child{border-bottom:0}
.sitemap a:hover{color:var(--c1)}
/* 返回顶部 */
.to-top{position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:12px;background:var(--grad);color:#fff;border:0;font-size:20px;cursor:pointer;opacity:0;visibility:hidden;transition:.3s;z-index:900}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-3px)}
/* 响应式 */
@media(max-width:992px){
.hamb{display:flex}
.menu{position:fixed;top:0;right:-100%;bottom:0;width:min(320px,86vw);background:#0e1530;flex-direction:column;align-items:stretch;gap:4px;padding:90px 20px 30px;transition:.35s;overflow-y:auto}
.menu.open{right:0}
.menu>li{position:static}
.menu>li>a{font-size:17px;padding:13px 14px;color:#fff}
.menu>li>a .arr{margin-left:auto}
.drop{position:static;transform:none;opacity:1;visibility:visible;max-height:0;overflow:hidden;padding:0;background:rgba(255,255,255,.05);border-radius:12px;min-width:0;box-shadow:none;transition:max-height .3s;margin:0 10px}
.drop:before{display:none}
.menu>li.open .drop{max-height:500px}
.drop a{color:rgba(255,255,255,.85)}
.drop a:hover{background:rgba(255,255,255,.08);color:#fff}
.hero-grid{grid-template-columns:1fr;gap:40px}
.grid-3,.grid-4,.news-grid,.testi-grid,.sys-grid,.sitemap,.pricing{grid-template-columns:repeat(2,1fr)}
.article-wrap{grid-template-columns:1fr}
.aside{position:static}
.nodes-wrap{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
.plan.hot{transform:none}
}
@media(max-width:768px){
.section{padding:68px 0}
.hero{padding:120px 0 70px}
.hero-stats{gap:24px}
.grid-3,.grid-4,.news-grid,.testi-grid,.sys-grid,.sitemap,.pricing{grid-template-columns:1fr}
.grid-2,.perf{grid-template-columns:1fr}
.region-grid{grid-template-columns:repeat(2,1fr)}
.article{padding:26px}
.article h1{font-size:26px}
.footer-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
.container{padding:0 18px}
.hero h1{font-size:30px}
.hero-cta .btn{width:100%}
.region-grid{grid-template-columns:1fr 1fr}
.sim-metrics{grid-template-columns:1fr}
.nav-cta .btn-ghost{display:none}
}