:root{--b1:#2563eb;--b2:#7c3aed;--cy:#22d3ee;--bg:#070d1a;--bg2:#0b1424;--card:#0e1a30;--line:rgba(148,163,184,.14);--tx:#e8eef7;--mut:#8fa0b8;--grad:linear-gradient(135deg,#2563eb,#7c3aed)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--tx);font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
h1,h2,h3{line-height:1.3}
section{scroll-margin-top:90px}
.container{max-width:1200px;margin:0 auto;padding:0 22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:999px;font-size:16px;font-weight:700;cursor:pointer;border:0;transition:all .25s;letter-spacing:.5px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 30px rgba(37,99,235,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(124,58,237,.45)}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--tx);border:1px solid rgba(255,255,255,.16)}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-3px)}
.btn-sm{padding:10px 22px;font-size:14px}
.sec-head{text-align:center;max-width:760px;margin:0 auto 56px}
.sec-tag{display:inline-block;padding:6px 18px;border-radius:999px;background:rgba(34,211,238,.1);color:var(--cy);border:1px solid rgba(34,211,238,.25);font-size:13px;font-weight:600;letter-spacing:2px;margin-bottom:16px}
.sec-title{font-size:38px;font-weight:800;margin-bottom:14px}
.sec-title span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-sub{color:var(--mut);font-size:16px}
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:16px 0;transition:all .3s}
.nav.scrolled{background:rgba(7,13,26,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);padding:10px 0;box-shadow:0 10px 34px rgba(0,0,0,.4)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:#fff;letter-spacing:.5px}
.nav-logo img{height:36px;width:auto;border-radius:8px}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:6px;padding:10px 14px;color:#c7d2e3;font-size:15px;font-weight:500;border-radius:8px;transition:.2s;cursor:pointer;background:none;border:0;font-family:inherit}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-link .arr{font-size:9px;transition:transform .3s;display:inline-block}
.nav-item.has-drop:hover .arr{transform:rotate(180deg)}
.drop-menu{position:absolute;top:100%;left:50%;transform:translate(-50%,14px);min-width:200px;background:#fff;border-radius:14px;box-shadow:0 24px 60px rgba(0,0,0,.45);padding:8px;opacity:0;visibility:hidden;transition:all .25s;z-index:1001}
.nav-item.has-drop:hover .drop-menu{opacity:1;visibility:visible;transform:translate(-50%,6px)}
.drop-item{display:block;padding:9px 16px;color:#334155;font-size:14px;border-radius:9px;transition:.2s;white-space:nowrap}
.drop-item:hover{background:#eef2ff;color:var(--b1)}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-cta{background:var(--grad);color:#fff;padding:11px 24px;border-radius:999px;font-size:14px;font-weight:700;box-shadow:0 8px 24px rgba(37,99,235,.35);transition:.25s;display:inline-flex;align-items:center;gap:8px}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(124,58,237,.45)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.hero{position:relative;padding:170px 0 90px;overflow:hidden}
.hero::before{content:"";position:absolute;top:-180px;left:50%;transform:translateX(-50%);width:1100px;height:640px;background:radial-gradient(ellipse at center,rgba(37,99,235,.28),rgba(124,58,237,.12) 45%,transparent 70%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.28);color:var(--cy);font-size:13px;font-weight:600;margin-bottom:22px}
.hero-h1{font-size:52px;font-weight:900;letter-spacing:1px;margin-bottom:20px}
.hero-h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:18px;color:var(--mut);margin-bottom:34px;max-width:520px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:44px}
.hero-stats{display:flex;gap:44px;flex-wrap:wrap}
.stat-item{position:relative}
.stat-num{font-size:34px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;display:flex;align-items:baseline}
.stat-num small{font-size:18px;margin-left:2px}
.stat-label{color:var(--mut);font-size:13px;margin-top:2px}
.demo-wrap{position:relative}
.demo-window{background:linear-gradient(160deg,#101b33,#0a1325);border:1px solid rgba(255,255,255,.1);border-radius:22px;box-shadow:0 40px 90px rgba(0,0,0,.5);overflow:hidden}
.demo-bar{display:flex;align-items:center;gap:8px;padding:14px 18px;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03)}
.demo-dot{width:11px;height:11px;border-radius:50%}
.demo-body{display:grid;grid-template-columns:1fr 1fr;gap:0}
.demo-panel{padding:24px}
.demo-panel+.demo-panel{border-left:1px solid rgba(255,255,255,.08)}
.demo-state{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.state-dot{width:9px;height:9px;border-radius:50%;background:#f59e0b;box-shadow:0 0 0 5px rgba(245,158,11,.15);transition:.3s}
.state-dot.on{background:#10b981;box-shadow:0 0 0 5px rgba(16,185,129,.15)}
.state-txt{font-size:13px;color:var(--mut)}
.state-txt b{color:var(--tx);font-weight:600}
.demo-connect{width:118px;height:118px;margin:0 auto 20px;border-radius:50%;background:var(--grad);border:0;color:#fff;font-size:16px;font-weight:800;cursor:pointer;position:relative;transition:.3s;box-shadow:0 0 0 12px rgba(37,99,235,.14)}
.demo-connect:hover{transform:scale(1.05)}
.demo-connect.on{background:#10b981;box-shadow:0 0 0 12px rgba(16,185,129,.14);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 12px rgba(16,185,129,.18)}70%{box-shadow:0 0 0 26px rgba(16,185,129,0)}100%{box-shadow:0 0 0 12px rgba(16,185,129,0)}}
.demo-toggles{display:flex;flex-direction:column;gap:12px}
.tgl-row{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:11px 15px}
.tgl-row .tgl-name{font-size:13px;color:var(--tx);font-weight:600}
.tgl-row .tgl-name small{display:block;color:var(--mut);font-weight:400;font-size:11px}
.tgl{position:relative;width:44px;height:24px;border-radius:999px;background:rgba(148,163,184,.3);border:0;cursor:pointer;transition:.25s;flex:none}
.tgl::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:.25s}
.tgl.on{background:var(--grad)}
.tgl.on::after{left:23px}
.demo-gauge{text-align:center;padding:6px 0 4px}
.gauge-box{position:relative;width:200px;height:130px;margin:0 auto}
.gauge-box svg{width:100%;height:100%}
.gauge-val{position:absolute;left:0;right:0;bottom:2px;text-align:center}
.gauge-val .gv-num{font-size:26px;font-weight:900;color:var(--cy)}
.gauge-val .gv-unit{font-size:12px;color:var(--mut)}
.demo-metrics{display:flex;justify-content:space-between;gap:8px;margin-top:16px}
.metric{flex:1;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:10px 8px;text-align:center}
.metric b{display:block;font-size:15px;color:var(--cy);font-weight:700}
.metric span{font-size:11px;color:var(--mut)}
.demo-nodes{display:flex;flex-direction:column;gap:8px}
.node-item{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:11px 15px;cursor:pointer;transition:.2s;font-size:13px;color:#c7d2e3}
.node-item .ni-l{display:flex;align-items:center;gap:9px}
.node-item .flag{width:22px;height:22px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;color:#fff;flex:none}
.node-item .ni-ping{color:var(--mut);font-size:12px}
.node-item.active{background:rgba(37,99,235,.14);border-color:rgba(59,130,246,.5);color:#fff}
.node-item.active .ni-ping{color:var(--cy)}
.steps{padding:90px 0;background:var(--bg2)}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:34px 28px;transition:.3s}
.step:hover{transform:translateY(-8px);border-color:rgba(59,130,246,.5);box-shadow:0 24px 50px rgba(0,0,0,.35)}
.step-num{width:52px;height:52px;border-radius:14px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:900;color:#fff;margin-bottom:20px;box-shadow:0 10px 24px rgba(37,99,235,.35)}
.step h3{font-size:20px;margin-bottom:10px}
.step p{color:var(--mut);font-size:14px}
.step-arrow{position:absolute;top:50%;right:-20px;transform:translateY(-50%);color:rgba(148,163,184,.4);font-size:22px;z-index:2}
.nodes-sec{padding:90px 0}
.nodes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.node-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px;cursor:pointer;transition:.3s;overflow:hidden}
.node-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);opacity:0;transition:.3s}
.node-card:hover,.node-card.active{transform:translateY(-6px);border-color:rgba(59,130,246,.5);box-shadow:0 22px 46px rgba(0,0,0,.35)}
.node-card.active::before{opacity:1}
.node-card .nc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.node-card .nc-name{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700}
.node-card .nc-flag{width:32px;height:32px;border-radius:10px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:13px}
.node-card .nc-load{font-size:12px;padding:4px 10px;border-radius:999px;background:rgba(16,185,129,.12);color:#10b981;border:1px solid rgba(16,185,129,.3)}
.node-card .nc-load.hot{background:rgba(245,158,11,.12);color:#f59e0b;border-color:rgba(245,158,11,.3)}
.node-card .nc-stats{display:flex;gap:20px}
.node-card .nc-stats div b{display:block;font-size:19px;color:var(--cy)}
.node-card .nc-stats div span{font-size:12px;color:var(--mut)}
.speed-sec{padding:90px 0;background:var(--bg2)}
.speed-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:center}
.speed-bars{display:flex;flex-direction:column;gap:18px}
.bar-row{display:grid;grid-template-columns:86px 1fr 86px;align-items:center;gap:14px}
.bar-name{font-size:14px;color:#c7d2e3;text-align:right}
.bar-track{height:14px;border-radius:999px;background:rgba(255,255,255,.06);overflow:hidden}
.bar-fill{height:100%;border-radius:999px;background:var(--grad);width:0;transition:width 1.2s cubic-bezier(.22,.8,.3,1)}
.bar-val{font-size:14px;font-weight:700;color:var(--cy)}
.speed-note{color:var(--mut);font-size:13px;margin-top:14px}
.proto-sec{padding:90px 0}
.proto-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.proto-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px 24px;transition:.3s}
.proto-card:hover{transform:translateY(-6px);border-color:rgba(34,211,238,.45);box-shadow:0 22px 46px rgba(0,0,0,.35)}
.proto-ico{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,rgba(37,99,235,.25),rgba(124,58,237,.25));display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}
.proto-card h3{font-size:18px;margin-bottom:10px}
.proto-card p{color:var(--mut);font-size:13px}
.feat-sec{padding:90px 0;background:var(--bg2)}
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feat-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px 24px;transition:.3s;position:relative;overflow:hidden}
.feat-card::after{content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.18),transparent 70%);pointer-events:none}
.feat-card:hover{transform:translateY(-6px);border-color:rgba(59,130,246,.5)}
.feat-ico{width:50px;height:50px;border-radius:13px;background:var(--grad);display:flex;align-items:center;justify-content:center;margin-bottom:18px;font-size:23px;box-shadow:0 8px 20px rgba(37,99,235,.3)}
.feat-card h3{font-size:17px;margin-bottom:9px}
.feat-card p{color:var(--mut);font-size:13px}
.scene-sec{padding:90px 0}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scene-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:30px 26px;transition:.3s;scroll-margin-top:110px}
.scene-card:hover{transform:translateY(-6px);border-color:rgba(124,58,237,.5);box-shadow:0 22px 46px rgba(0,0,0,.35)}
.scene-emoji{font-size:34px;margin-bottom:16px}
.scene-card h3{font-size:19px;margin-bottom:10px}
.scene-card p{color:var(--mut);font-size:14px}
.price-sec{padding:90px 0;background:var(--bg2)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:36px 30px;display:flex;flex-direction:column;position:relative;transition:.3s}
.price-card:hover{transform:translateY(-8px)}
.price-card.hot{border:2px solid transparent;background:linear-gradient(var(--bg2),var(--bg2)) padding-box,var(--grad) border-box;box-shadow:0 30px 70px rgba(37,99,235,.25);transform:scale(1.04)}
.price-card.hot:hover{transform:scale(1.04) translateY(-8px)}
.hot-tag{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;letter-spacing:1px;white-space:nowrap}
.price-name{font-size:18px;font-weight:700;margin-bottom:6px}
.price-desc{color:var(--mut);font-size:13px;margin-bottom:22px}
.price-num{font-size:44px;font-weight:900;display:flex;align-items:baseline;gap:4px}
.price-num small{font-size:15px;color:var(--mut);font-weight:500}
.price-num .free{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.price-list{list-style:none;margin:26px 0 30px;flex:1}
.price-list li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;color:#c7d2e3;font-size:14px;border-bottom:1px dashed rgba(148,163,184,.14)}
.price-list li::before{content:"✓";color:var(--cy);font-weight:800;flex:none}
.price-btn{width:100%}
.faq-sec{padding:90px 0}
.faq-wrap{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.3s}
.faq-item.open{border-color:rgba(59,130,246,.5)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:20px 24px;background:none;border:0;color:var(--tx);font-size:16px;font-weight:600;cursor:pointer;text-align:left;font-family:inherit}
.faq-q .fq-ico{flex:none;width:28px;height:28px;border-radius:50%;background:rgba(37,99,235,.15);color:var(--cy);display:flex;align-items:center;justify-content:center;font-size:18px;transition:.3s}
.faq-item.open .fq-ico{transform:rotate(45deg);background:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-in{padding:0 24px 22px;color:var(--mut);font-size:14px}
.faq-a-in ol{margin:10px 0 0 18px;display:flex;flex-direction:column;gap:6px}
.tst-sec{padding:90px 0;background:var(--bg2)}
.tst-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.tst-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px}
.tst-stars{color:#fbbf24;font-size:15px;letter-spacing:3px;margin-bottom:14px}
.tst-txt{color:#c7d2e3;font-size:14px;margin-bottom:20px}
.tst-user{display:flex;align-items:center;gap:12px}
.tst-avatar{width:42px;height:42px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:16px;flex:none}
.tst-user b{display:block;font-size:14px}
.tst-user span{font-size:12px;color:var(--mut)}
.news-sec{padding:90px 0}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-8px);border-color:rgba(59,130,246,.5);box-shadow:0 24px 50px rgba(0,0,0,.4)}
.news-img{aspect-ratio:16/9;overflow:hidden;background:#111c33}
.news-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .news-img img{transform:scale(1.07)}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.news-cat{font-size:12px;padding:3px 12px;border-radius:999px;background:rgba(37,99,235,.14);color:#7aa2f7;border:1px solid rgba(59,130,246,.3);font-weight:600}
.news-date{font-size:12px;color:var(--mut)}
.news-card h3{font-size:17px;margin-bottom:10px;line-height:1.5}
.news-card h3 a:hover{color:var(--cy)}
.news-card p{color:var(--mut);font-size:13px;flex:1}
.news-more{display:inline-flex;align-items:center;gap:6px;color:var(--cy);font-size:13px;font-weight:600;margin-top:14px}
.cta-sec{position:relative;padding:100px 0;overflow:hidden}
.cta-sec::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(37,99,235,.3),rgba(124,58,237,.1) 50%,transparent 75%)}
.cta-card{position:relative;background:linear-gradient(140deg,#111e3d,#0c1430);border:1px solid rgba(255,255,255,.12);border-radius:30px;padding:70px 40px;text-align:center;box-shadow:0 40px 90px rgba(0,0,0,.5)}
.cta-card h2{font-size:36px;font-weight:900;margin-bottom:16px}
.cta-card p{color:var(--mut);max-width:560px;margin:0 auto 34px}
.footer{background:#050a16;border-top:1px solid var(--line);padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.foot-brand p{color:var(--mut);font-size:13px;margin-top:16px;max-width:280px}
.foot-title{font-size:15px;font-weight:700;margin-bottom:18px}
.foot-link{display:block;color:var(--mut);font-size:13px;padding:6px 0;transition:.2s}
.foot-link:hover{color:var(--cy);transform:translateX(3px)}
.foot-bottom{border-top:1px solid rgba(148,163,184,.1);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;color:var(--mut);font-size:12px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--mut);padding:120px 0 26px;max-width:1200px;margin:0 auto;width:calc(100% - 44px);flex-wrap:wrap}
.crumb a:hover{color:var(--cy)}
.crumb .sep{opacity:.5}
.page-head{padding:40px 0 20px}
.page-title{font-size:40px;font-weight:900;text-align:center;margin-bottom:14px}
.page-sub{color:var(--mut);text-align:center;max-width:640px;margin:0 auto}
.dl-hero{padding:60px 0 90px}
.dl-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.dl-data{display:flex;gap:34px;flex-wrap:wrap;margin:34px 0 6px}
.dl-data .dd-item b{display:block;font-size:26px;font-weight:900;color:var(--cy)}
.dl-data .dd-item span{font-size:13px;color:var(--mut)}
.ver-sec{padding:90px 0;background:var(--bg2)}
.ver-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.ver-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:30px 24px;display:flex;flex-direction:column;transition:.3s}
.ver-card:hover{transform:translateY(-8px);border-color:rgba(59,130,246,.5)}
.ver-ico{font-size:38px;margin-bottom:16px}
.ver-card h3{font-size:19px;margin-bottom:4px}
.ver-ver{color:var(--cy);font-size:13px;font-weight:600;margin-bottom:4px}
.ver-size{color:var(--mut);font-size:13px;margin-bottom:18px}
.ver-list{list-style:none;flex:1;margin-bottom:24px}
.ver-list li{display:flex;gap:8px;align-items:flex-start;padding:5px 0;color:#c7d2e3;font-size:13px}
.ver-list li::before{content:"✓";color:var(--cy);font-weight:800;flex:none}
.req-sec{padding:90px 0}
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.req-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px}
.req-card .rq-ico{font-size:24px;margin-bottom:12px}
.req-card h3{font-size:16px;margin-bottom:8px}
.req-card p{color:var(--mut);font-size:13px}
.install-sec{padding:90px 0;background:var(--bg2)}
.install-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.article-wrap{display:grid;grid-template-columns:1fr 330px;gap:44px;max-width:1200px;margin:0 auto;padding:40px 22px 90px;align-items:start}
.article{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:44px 48px}
.article h1{font-size:30px;font-weight:900;margin:16px 0 18px;line-height:1.45}
.article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:26px;color:var(--mut);font-size:13px}
.article h2{font-size:22px;font-weight:800;margin:34px 0 16px;padding-left:14px;border-left:4px solid;border-image:var(--grad) 1;scroll-margin-top:100px}
.article p{color:#c7d2e3;font-size:15px;margin-bottom:18px;text-align:justify}
.article-img{aspect-ratio:2/1;border-radius:16px;overflow:hidden;margin:26px 0;background:#111c33}
.article-img img{width:100%;height:100%;object-fit:cover}
.article .lead{font-size:16px;color:var(--tx)}
.data-dense{background:rgba(37,99,235,.08);border:1px solid rgba(59,130,246,.3);border-radius:16px;padding:22px 26px;margin:26px 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.data-dense .dd b{display:block;font-size:24px;font-weight:900;color:var(--cy)}
.data-dense .dd span{font-size:12px;color:var(--mut)}
.article-end{background:rgba(124,58,237,.08);border:1px solid rgba(124,58,237,.3);border-radius:16px;padding:22px 26px;margin-top:28px}
.article-end p{color:#c7d2e3;font-size:14px;margin:0 0 14px}
.pager{display:flex;gap:12px;flex-wrap:wrap;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.pager a{flex:1;min-width:150px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:14px;padding:14px 18px;transition:.2s;font-size:13px}
.pager a:hover{border-color:rgba(59,130,246,.5);color:var(--cy)}
.pager a small{display:block;color:var(--mut);font-size:11px;margin-bottom:4px}
.pager a.back{flex:0 0 auto;display:flex;align-items:center;gap:6px;color:var(--tx);font-weight:600}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}
.rel-card{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.2s}
.rel-card:hover{border-color:rgba(59,130,246,.5);transform:translateY(-4px)}
.rel-card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.rel-card span{display:block;padding:12px 14px;font-size:13px;line-height:1.5}
.side{position:sticky;top:100px;display:flex;flex-direction:column;gap:22px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 16px 40px rgba(0,0,0,.25)}
.side-title{position:relative;display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800;margin-bottom:18px;padding-left:12px}
.side-title::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:2px;background:var(--grad)}
.toc-list{position:relative;padding-left:18px}
.toc-list::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:2px;background:rgba(148,163,184,.2)}
.toc-item{position:relative;display:block;padding:7px 0 7px 14px;color:var(--mut);font-size:13px;transition:.2s;line-height:1.5}
.toc-item::before{content:"";position:absolute;left:-16px;top:13px;width:9px;height:9px;border-radius:50%;background:var(--card);border:2px solid rgba(148,163,184,.45);transition:.2s}
.toc-item:hover{color:var(--cy)}
.toc-item.active{color:var(--cy);font-weight:700}
.toc-item.active::before{background:var(--cy);border-color:var(--cy);box-shadow:0 0 0 4px rgba(34,211,238,.15)}
.rank-item{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px dashed rgba(148,163,184,.14);transition:.2s}
.rank-item:last-child{border-bottom:0}
.rank-item:hover .rank-title{color:var(--cy)}
.rank-badge{flex:none;width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;color:#fff;background:#334155;transition:.2s}
.rank-item:hover .rank-badge{transform:scale(1.15)}
.rank-item:nth-child(1) .rank-badge{background:var(--grad)}
.rank-item:nth-child(2) .rank-badge{background:linear-gradient(135deg,#f59e0b,#f97316)}
.rank-item:nth-child(3) .rank-badge{background:linear-gradient(135deg,#eab308,#f59e0b)}
.rank-title{font-size:13px;line-height:1.5;color:#c7d2e3}
.tag-wrap{display:flex;flex-wrap:wrap;gap:10px}
.tag-pill{font-size:12px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--mut);transition:.2s}
.tag-pill:hover{color:var(--cy);border-color:var(--cy);background:rgba(34,211,238,.08)}
.comments{margin-top:44px;padding-top:34px;border-top:1px solid var(--line)}
.comments h2{font-size:20px;font-weight:800;margin-bottom:24px;padding-left:14px;border-left:4px solid;border-image:var(--grad) 1}
.comment{display:flex;gap:14px;padding:18px 0;border-bottom:1px dashed rgba(148,163,184,.14)}
.c-avatar{flex:none;width:42px;height:42px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:16px}
.c-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:6px}
.c-head b{font-size:14px}
.c-head span{font-size:12px;color:var(--mut)}
.c-body{color:#c7d2e3;font-size:13px}
.nf-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:120px 22px 60px;text-align:center}
.nf-num{font-size:120px;font-weight:900;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:6px}
.nf-wrap h1{font-size:26px;margin:18px 0 12px}
.nf-wrap p{color:var(--mut);margin-bottom:30px}
.sm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:0 22px 90px;max-width:1200px;margin:0 auto}
.sm-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px}
.sm-card h2{font-size:17px;margin-bottom:16px;padding-left:12px;border-left:3px solid;border-image:var(--grad) 1}
.sm-link{display:flex;align-items:center;gap:8px;color:var(--mut);font-size:13px;padding:7px 0;transition:.2s}
.sm-link:hover{color:var(--cy);transform:translateX(4px)}
.sm-link::before{content:"›";color:var(--cy);font-weight:800}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media(max-width:992px){
.hero{padding:140px 0 70px}
.hero-grid,.dl-grid,.speed-grid{grid-template-columns:1fr;gap:40px}
.hero-h1{font-size:38px}
.sec-title{font-size:30px}
.steps-grid,.nodes-grid,.proto-grid,.scene-grid,.ver-grid,.install-grid{grid-template-columns:repeat(2,1fr)}
.feat-grid{grid-template-columns:repeat(2,1fr)}
.step-arrow{display:none}
.price-grid{grid-template-columns:1fr;max-width:430px;margin:0 auto}
.price-card.hot{transform:none}
.price-card.hot:hover{transform:translateY(-8px)}
.burger{display:flex}
.nav-menu{position:fixed;top:0;right:-320px;width:300px;height:100vh;background:#0a1325;flex-direction:column;align-items:stretch;gap:0;padding:90px 20px 30px;transition:right .35s;box-shadow:-20px 0 60px rgba(0,0,0,.5);overflow-y:auto}
.nav-menu.open{right:0}
.nav-item{width:100%}
.nav-link{width:100%;justify-content:space-between;padding:14px 12px;font-size:16px}
.nav-link .arr{transition:transform .3s}
.nav-item.open .arr{transform:rotate(180deg)}
.drop-menu{position:static;transform:none;opacity:1;visibility:visible;background:transparent;box-shadow:none;display:none;padding:0 0 8px 14px;min-width:0}
.nav-item.open .drop-menu{display:block}
.drop-item{color:#c7d2e3;padding:10px 14px;font-size:14px}
.drop-item:hover{background:rgba(255,255,255,.06);color:var(--cy)}
.nav-right{margin-left:auto}
.nav-cta{display:none}
.burger{display:flex}
.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)}
.article-wrap{grid-template-columns:1fr;padding-top:20px}
.side{position:static}
.tst-grid,.req-grid,.sm-grid{grid-template-columns:1fr}
.demo-body{grid-template-columns:1fr}
.demo-panel+.demo-panel{border-left:0;border-top:1px solid rgba(255,255,255,.08)}
}
@media(max-width:768px){
.hero-h1{font-size:30px}
.hero-sub{font-size:15px}
.hero-stats{gap:26px}
.stat-num{font-size:27px}
.sec-title{font-size:25px}
.steps-grid,.nodes-grid,.proto-grid,.feat-grid,.scene-grid,.ver-grid,.install-grid,.rel-grid{grid-template-columns:1fr}
.news-grid{grid-template-columns:1fr}
.article{padding:30px 22px}
.article h1{font-size:23px}
.article h2{font-size:19px}
.data-dense{grid-template-columns:1fr;gap:12px}
.foot-grid{grid-template-columns:1fr 1fr}
.cta-card h2{font-size:26px}
.crumb{padding-top:100px}
.page-title{font-size:30px}
}
@media(max-width:480px){
.hero-btns .btn{width:100%}
.hero-stats{gap:20px}
.stat-num{font-size:23px}
.demo-window{border-radius:16px}
.demo-connect{width:100px;height:100px}
.bar-row{grid-template-columns:64px 1fr 64px;gap:8px}
.bar-name,.bar-val{font-size:12px}
.price-num{font-size:36px}
.foot-grid{grid-template-columns:1fr}
.nf-num{font-size:80px}
}
.page-sec{padding:40px 0 80px}
.sitemap-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px;max-width:960px;margin:0 auto}
.map-col{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:26px 28px;box-shadow:0 4px 16px rgba(15,23,42,.05)}
.map-col h2{font-size:19px;font-weight:800;color:#0f172a;margin:0 0 14px}
.map-col h2:not(:first-child){margin-top:24px}
.map-list{list-style:none;margin:0;padding:0}
.map-list li{border-bottom:1px dashed #e2e8f0}
.map-list li:last-child{border-bottom:none}
.map-list a{display:block;padding:10px 0;color:#475569;font-size:15px;text-decoration:none}
.map-list a:hover{color:#2563eb}
@media(max-width:768px){.sitemap-grid{grid-template-columns:1fr}.page-sec{padding:24px 0 60px}}