*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--brand:#4f6bff;--brand2:#00d9ff;--grad:linear-gradient(120deg,#4f6bff 0%,#00d9ff 100%);--ink:#0b1026;--navy:#0a1030;--navy2:#101c4d;--text:#202648;--muted:#626a8a;--line:#e7eaf6;--bg:#f5f7fe;--card:#ffffff;--radius:14px;--shadow:0 10px 30px rgba(18,26,66,.08);--shadow-lg:0 24px 60px rgba(18,26,66,.16)}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px}
.section{padding:78px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 46px}
.sec-title{font-size:32px;font-weight:800;color:var(--ink);line-height:1.35;letter-spacing:.5px}
.sec-title span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-sub{margin-top:14px;color:var(--muted);font-size:15px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:30px;font-size:15px;font-weight:700;transition:all .25s ease;white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(79,107,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(79,107,255,.45)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.2)}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 8px 22px rgba(10,16,48,.22)}
.btn-light:hover{transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--brand);border:2px solid var(--brand)}
.btn-outline:hover{background:var(--brand);color:#fff}
.btn-lg{padding:16px 38px;font-size:16px}
.top-nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s ease,box-shadow .3s ease;background:transparent}
.top-nav.scrolled{background:rgba(9,14,44,.88);backdrop-filter:blur(14px);box-shadow:0 6px 24px rgba(4,8,28,.35)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:#fff}
.nav-logo img{width:36px;height:36px;border-radius:9px}
.nav-logo b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:5px;padding:10px 15px;color:rgba(255,255,255,.88);font-size:15px;font-weight:600;border-radius:9px;transition:color .2s}
.nav-link:hover{color:#fff}
.drop-arrow{display:inline-block;transition:transform .3s ease;font-size:11px}
.nav-item:hover .drop-arrow,.nav-item.open .drop-arrow{transform:rotate(180deg)}
.drop-panel{position:absolute;top:calc(100% + 12px);left:0;min-width:210px;background:#fff;border-radius:12px;box-shadow:0 20px 50px rgba(8,14,44,.22);padding:9px;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease;z-index:110}
.nav-item:hover .drop-panel,.nav-item.open .drop-panel{opacity:1;visibility:visible;transform:translateY(0)}
.drop-item{display:block;padding:10px 14px;border-radius:8px;color:var(--text);font-size:14px;font-weight:500;transition:background .2s,color .2s}
.drop-item:hover{background:#f0f3ff;color:var(--brand)}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-cta{padding:11px 24px;border-radius:24px;background:var(--grad);color:#fff;font-size:14px;font-weight:700;box-shadow:0 6px 18px rgba(79,107,255,.4);transition:transform .25s}
.nav-cta:hover{transform:translateY(-2px)}
.hamburger{display:none;width:42px;height:42px;border-radius:10px;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:rgba(255,255,255,.12)}
.hamburger span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:all .3s}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.hero{position:relative;background:radial-gradient(1200px 600px at 85% -10%,rgba(0,217,255,.22),transparent 60%),radial-gradient(900px 500px at -10% 110%,rgba(79,107,255,.28),transparent 60%),linear-gradient(150deg,#070c26 0%,#0e1a4d 60%,#12225e 100%);color:#fff;padding:150px 0 96px;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(2px 2px at 20% 30%,rgba(255,255,255,.5),transparent 40%),radial-gradient(2px 2px at 70% 20%,rgba(255,255,255,.4),transparent 40%),radial-gradient(2px 2px at 40% 70%,rgba(255,255,255,.35),transparent 40%),radial-gradient(2px 2px at 85% 65%,rgba(255,255,255,.4),transparent 40%);background-size:240px 240px,300px 300px,260px 260px,280px 280px;pointer-events:none}
.hero-wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);padding:7px 16px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:22px}
.hero-badge i{width:8px;height:8px;border-radius:50%;background:#2bff9c;box-shadow:0 0 10px #2bff9c;animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero-title{font-size:46px;font-weight:900;line-height:1.22;letter-spacing:1px}
.hero-title em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:20px;font-size:17px;color:rgba(255,255,255,.78);max-width:520px}
.hero-btns{display:flex;gap:16px;margin-top:34px;flex-wrap:wrap}
.hero-stats{display:flex;gap:44px;margin-top:46px;flex-wrap:wrap}
.stat-item{display:flex;flex-direction:column}
.stat-num{font-size:32px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{font-size:13px;color:rgba(255,255,255,.66);margin-top:2px}
.demo-window{background:rgba(10,16,48,.66);border:1px solid rgba(255,255,255,.14);border-radius:18px;box-shadow:0 30px 70px rgba(0,0,0,.4);backdrop-filter:blur(10px);overflow:hidden}
.demo-titlebar{display:flex;align-items:center;gap:8px;padding:13px 16px;background:rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.1)}
.demo-dot{width:11px;height:11px;border-radius:50%}
.demo-dot:nth-child(1){background:#ff5f57}.demo-dot:nth-child(2){background:#febc2e}.demo-dot:nth-child(3){background:#28c840}
.demo-bar-title{margin-left:8px;font-size:12px;color:rgba(255,255,255,.6)}
.demo-content{padding:22px 24px 26px}
.demo-status{display:flex;align-items:center;justify-content:center;gap:9px;font-size:14px;font-weight:700;color:rgba(255,255,255,.85);margin-bottom:14px}
.demo-status .st-dot{width:9px;height:9px;border-radius:50%;background:#8b93b8}
.demo-status.connected .st-dot{background:#2bff9c;box-shadow:0 0 12px #2bff9c}
.demo-status.connecting .st-dot{background:#ffc531;animation:pulse 1s infinite}
.demo-gauge-wrap{display:flex;justify-content:center;margin-bottom:8px}
.demo-gauge{position:relative;width:190px;height:190px}
.demo-gauge svg{transform:rotate(-90deg)}
.gauge-bg{fill:none;stroke:rgba(255,255,255,.1);stroke-width:10}
.gauge-fg{fill:none;stroke:url(#gaugeGrad);stroke-width:10;stroke-linecap:round;transition:stroke-dashoffset .8s ease}
.gauge-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.gauge-val{font-size:34px;font-weight:900;color:#fff;line-height:1}
.gauge-unit{font-size:12px;color:rgba(255,255,255,.6);margin-top:6px}
.demo-metrics{display:flex;justify-content:center;gap:26px;margin-top:12px}
.demo-metric{text-align:center}
.demo-metric b{display:block;font-size:17px;color:#fff;font-weight:800}
.demo-metric span{font-size:12px;color:rgba(255,255,255,.58)}
.demo-node-row{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:11px;padding:11px 14px;margin-top:16px}
.demo-node-row label{font-size:13px;color:rgba(255,255,255,.72)}
.demo-node-select{background:rgba(10,16,48,.8);color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:8px;padding:7px 12px;font-size:13px;outline:none;cursor:pointer}
.demo-node-select option{background:#101c4d}
.demo-toggles{display:flex;gap:12px;margin-top:14px}
.demo-toggle{flex:1;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:11px;padding:10px 13px;font-size:13px;color:rgba(255,255,255,.8)}
.demo-toggle i{width:34px;height:18px;border-radius:10px;background:#39406b;position:relative;transition:background .25s;display:inline-block}
.demo-toggle i::after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:#fff;transition:left .25s}
.demo-toggle.on i{background:var(--brand2)}
.demo-toggle.on i::after{left:18px}
.demo-connect{display:block;width:100%;margin-top:16px;padding:14px;border-radius:12px;background:var(--grad);color:#fff;font-size:16px;font-weight:800;letter-spacing:2px;transition:all .25s;box-shadow:0 10px 26px rgba(0,217,255,.35)}
.demo-connect:hover{transform:translateY(-2px)}
.demo-connect.connected{background:rgba(43,255,156,.9);color:#05351c}
.demo-connect.connecting{background:#ffc531;color:#4a3204;pointer-events:none}
.nodes-board{background:linear-gradient(160deg,#0b1140,#141f63);border-radius:20px;padding:48px;position:relative;overflow:hidden}
.nodes-board::before{content:"";position:absolute;top:-80px;right:-60px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(0,217,255,.25),transparent 70%)}
.nodes-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:34px;position:relative;z-index:2}
.nodes-head .sec-title{color:#fff;text-align:left;margin:0}
.nodes-head .sec-sub{color:rgba(255,255,255,.62);margin-top:10px}
.nodes-stat{color:#2bff9c;font-size:14px;font-weight:700;background:rgba(43,255,156,.1);border:1px solid rgba(43,255,156,.3);padding:8px 16px;border-radius:20px}
.nodes-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative;z-index:2}
.node-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:18px;transition:all .3s}
.node-card:hover{transform:translateY(-5px);border-color:rgba(0,217,255,.55);box-shadow:0 16px 34px rgba(0,0,0,.3)}
.node-flag{font-size:24px}
.node-city{color:#fff;font-size:15px;font-weight:700;margin-top:10px}
.node-ping{display:inline-flex;align-items:center;gap:6px;margin-top:7px;font-size:12px;color:#2bff9c}
.node-ping i{width:6px;height:6px;border-radius:50%;background:#2bff9c;animation:pulse 1.5s infinite}
.node-tag{font-size:11px;color:rgba(255,255,255,.5)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:all .3s;position:relative;overflow:hidden}
.feature-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .35s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.feature-card:hover::before{transform:scaleX(1)}
.f-icon{width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,rgba(79,107,255,.14),rgba(0,217,255,.14));display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px}
.feature-card h3{font-size:17px;font-weight:800;color:var(--ink)}
.feature-card p{margin-top:9px;font-size:14px;color:var(--muted)}
.tech-panel{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:46px;box-shadow:var(--shadow)}
.tech-row{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:30px}
.tech-col{text-align:left}
.tech-col .t-num{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:2px}
.tech-col h3{font-size:18px;font-weight:800;color:var(--ink);margin-top:8px}
.tech-col p{margin-top:10px;font-size:14px;color:var(--muted)}
.protocol-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.protocol-tag{background:#eef2ff;color:var(--brand);font-size:12px;font-weight:700;padding:6px 13px;border-radius:16px;border:1px solid #dbe3ff}
.speed-board{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:46px;box-shadow:var(--shadow);display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.speed-list{margin-top:26px;display:flex;flex-direction:column;gap:20px}
.speed-item .s-top{display:flex;justify-content:space-between;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.speed-item .s-top b{color:var(--brand)}
.speed-bar{height:10px;border-radius:6px;background:#eef1fb;overflow:hidden}
.speed-fill{height:100%;border-radius:6px;background:var(--grad);width:0;transition:width 1.2s cubic-bezier(.25,.8,.3,1)}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;text-align:center;position:relative;transition:transform .3s}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.step-num{width:46px;height:46px;margin:0 auto 16px;border-radius:50%;background:var(--grad);color:#fff;font-size:19px;font-weight:900;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(79,107,255,.35)}
.step-card h3{font-size:16px;font-weight:800;color:var(--ink)}
.step-card p{margin-top:8px;font-size:13px;color:var(--muted)}
.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scenario-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:all .3s}
.scenario-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:#c9d6ff}
.sc-icon{font-size:30px}
.scenario-card h3{font-size:17px;font-weight:800;color:var(--ink);margin-top:14px}
.scenario-card p{margin-top:9px;font-size:14px;color:var(--muted)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{background:var(--card);border:2px solid var(--line);border-radius:20px;padding:36px 30px;text-align:center;position:relative;transition:all .3s;display:flex;flex-direction:column}
.price-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.price-card.pop{border-color:transparent;background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;box-shadow:0 24px 54px rgba(79,107,255,.25)}
.pop-badge{position:absolute;top:-15px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;font-weight:800;padding:6px 18px;border-radius:16px;white-space:nowrap;box-shadow:0 6px 16px rgba(0,217,255,.4)}
.price-name{font-size:16px;font-weight:800;color:var(--ink)}
.price-amount{margin-top:18px;display:flex;align-items:baseline;justify-content:center;gap:4px}
.price-amount b{font-size:44px;font-weight:900;color:var(--ink);line-height:1}
.price-amount span{font-size:14px;color:var(--muted)}
.price-desc{margin-top:8px;font-size:13px;color:var(--muted)}
.price-list{margin-top:24px;text-align:left;flex:1}
.price-list li{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:14px;color:var(--text);border-bottom:1px dashed var(--line)}
.price-list li::before{content:"✓";color:#19c98a;font-weight:900}
.price-btn{margin-top:24px;padding:14px;border-radius:26px;background:#eef2ff;color:var(--brand);font-weight:800;font-size:15px;transition:all .25s}
.price-btn:hover{background:var(--brand);color:#fff}
.price-card.pop .price-btn{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(79,107,255,.4)}
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden;transition:box-shadow .3s}
.faq-item.open{box-shadow:var(--shadow);border-color:#c9d6ff}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font-size:16px;font-weight:700;color:var(--ink);text-align:left}
.faq-q .q-icon{width:26px;height:26px;border-radius:50%;background:#eef2ff;color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:900;flex:none;transition:all .3s}
.faq-item.open .q-icon{background:var(--grad);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-a-in{padding:0 24px 22px;color:var(--muted);font-size:14px}
.faq-a ol{margin-top:10px;padding-left:0}
.faq-a ol li{padding:5px 0;display:flex;gap:10px}
.faq-a ol li b{color:var(--brand);flex:none}
.testi-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.t-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:all .3s}
.t-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.t-stars{color:#ffb020;font-size:14px;letter-spacing:2px}
.t-text{margin-top:13px;font-size:14.5px;color:var(--text)}
.t-user{display:flex;align-items:center;gap:13px;margin-top:18px}
.t-avatar{width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;font-size:17px;font-weight:800;display:flex;align-items:center;justify-content:center;flex:none}
.t-name{font-size:14px;font-weight:800;color:var(--ink)}
.t-role{font-size:12px;color:var(--muted)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:all .3s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.nc-img{position:relative;overflow:hidden}
.nc-img img{width:100%;height:200px;object-fit:cover;transition:transform .5s}
.news-card:hover .nc-img img{transform:scale(1.06)}
.nc-tag{position:absolute;top:12px;left:12px;background:rgba(10,16,48,.78);color:#fff;font-size:12px;font-weight:700;padding:5px 12px;border-radius:14px;backdrop-filter:blur(4px)}
.nc-body{padding:20px;display:flex;flex-direction:column;flex:1}
.nc-date{font-size:12px;color:var(--muted)}
.nc-title{font-size:16px;font-weight:800;color:var(--ink);margin-top:9px;line-height:1.5;transition:color .2s}
.news-card:hover .nc-title{color:var(--brand)}
.nc-desc{margin-top:9px;font-size:13px;color:var(--muted);flex:1}
.nc-more{margin-top:13px;font-size:13px;font-weight:700;color:var(--brand)}
.cta-band{background:linear-gradient(130deg,#0b1140,#1b2a7a 55%,#123a86);border-radius:24px;padding:64px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;top:-120px;left:50%;transform:translateX(-50%);width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(0,217,255,.3),transparent 65%)}
.cta-band h2{font-size:32px;font-weight:900;position:relative;z-index:2}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.75);position:relative;z-index:2}
.cta-band .hero-btns{justify-content:center;position:relative;z-index:2}
.footer{background:#070b22;color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.f-brand .nav-logo{margin-bottom:16px}
.f-brand p{font-size:13.5px;max-width:300px}
.f-title{font-size:15px;font-weight:800;color:#fff;margin-bottom:18px}
.f-link{display:block;padding:6px 0;font-size:13.5px;transition:color .2s}
.f-link:hover{color:var(--brand2)}
.f-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;font-size:13px;text-align:center;color:rgba(255,255,255,.45)}
.page-hero{background:linear-gradient(150deg,#070c26,#101c4d 60%,#15245f);color:#fff;padding:150px 0 74px;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(800px 380px at 50% -10%,rgba(0,217,255,.18),transparent 60%)}
.page-hero h1{font-size:38px;font-weight:900;position:relative;z-index:2}
.page-hero p{margin-top:14px;color:rgba(255,255,255,.72);position:relative;z-index:2;font-size:15.5px}
.breadcrumb{display:flex;align-items:center;justify-content:center;gap:9px;margin-top:20px;font-size:13px;color:rgba(255,255,255,.55);position:relative;z-index:2;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--brand2)}
.breadcrumb b{color:#fff;font-weight:600}
.dl-grid{display:grid;grid-template-columns:1fr .9fr;gap:50px;align-items:center}
.dl-title{font-size:40px;font-weight:900;line-height:1.25}
.dl-title em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.dl-sub{margin-top:18px;font-size:16px;color:rgba(255,255,255,.75)}
.dl-meta{display:flex;gap:34px;margin-top:32px;flex-wrap:wrap}
.dl-meta .dm-item b{display:block;font-size:22px;font-weight:900;color:#2bff9c}
.dl-meta .dm-item span{font-size:12.5px;color:rgba(255,255,255,.6)}
.ver-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.version-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:all .3s;display:flex;flex-direction:column}
.version-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.v-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.v-os{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--ink)}
.v-os .os-ic{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,rgba(79,107,255,.15),rgba(0,217,255,.15));display:flex;align-items:center;justify-content:center;font-size:20px}
.v-badge{background:#eef2ff;color:var(--brand);font-size:12px;font-weight:800;padding:5px 12px;border-radius:14px}
.v-list{flex:1}
.v-list li{display:flex;gap:9px;padding:7px 0;font-size:13.5px;color:var(--muted)}
.v-list li::before{content:"✓";color:#19c98a;font-weight:900;flex:none}
.v-btn{margin-top:18px;padding:12px;border-radius:24px;background:var(--grad);color:#fff;font-weight:800;font-size:14.5px;text-align:center;transition:transform .25s;display:block}
.v-btn:hover{transform:translateY(-2px)}
.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sys-item{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:22px;transition:transform .3s}
.sys-item:hover{transform:translateY(-4px)}
.sys-item .s-ic{font-size:22px}
.sys-item h3{font-size:15px;font-weight:800;color:var(--ink);margin-top:10px}
.sys-item p{margin-top:6px;font-size:13px;color:var(--muted)}
.news-list{display:flex;flex-direction:column;gap:20px}
.news-list-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:grid;grid-template-columns:230px 1fr;gap:24px;transition:all .3s}
.news-list-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.news-list-item img{width:230px;height:130px;object-fit:cover;border-radius:10px}
.nli-body{display:flex;flex-direction:column}
.nli-top{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted)}
.nli-tag{background:#eef2ff;color:var(--brand);font-weight:700;padding:3px 11px;border-radius:12px}
.nli-body h2{font-size:19px;font-weight:800;color:var(--ink);margin-top:10px;line-height:1.45;transition:color .2s}
.news-list-item:hover h2{color:var(--brand)}
.nli-body p{margin-top:9px;font-size:14px;color:var(--muted);flex:1}
.nli-more{margin-top:12px;font-size:13.5px;font-weight:700;color:var(--brand)}
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.article{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:44px 46px}
.article h1{font-size:27px;font-weight:900;color:var(--ink);line-height:1.45}
.article-meta{display:flex;align-items:center;gap:16px;margin-top:18px;padding-bottom:22px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.article-meta span{font-size:13px;color:var(--muted)}
.article-meta .m-tag{background:#eef2ff;color:var(--brand);font-weight:700;padding:3px 12px;border-radius:12px}
.article-body{margin-top:26px;font-size:15.5px;color:var(--text)}
.article-body p{margin-bottom:18px;text-align:justify}
.article-body h2{font-size:20px;font-weight:800;color:var(--ink);margin:30px 0 14px;padding-left:14px;border-left:4px solid;border-image:var(--grad) 1;scroll-margin-top:90px}
.article-body img{border-radius:12px;margin:20px 0}
.article-img-cap{font-size:12.5px;color:var(--muted);text-align:center;margin:-10px 0 20px}
.article-quote{background:#f4f7ff;border-left:4px solid var(--brand);padding:16px 20px;border-radius:0 12px 12px 0;margin:22px 0;font-size:14.5px;color:var(--text)}
.article-quote b{color:var(--brand)}
.sidebar{position:sticky;top:90px;display:flex;flex-direction:column;gap:20px}
.sb-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.sb-title{display:flex;align-items:center;gap:9px;font-size:16px;font-weight:800;color:var(--ink);margin-bottom:16px}
.sb-title::before{content:"";width:4px;height:17px;border-radius:2px;background:var(--grad)}
.toc-list{position:relative;padding-left:18px}
.toc-list::before{content:"";position:absolute;left:4px;top:6px;bottom:6px;width:2px;background:#e3e8f8}
.toc-item{position:relative;display:block;padding:8px 0 8px 10px;font-size:13.5px;color:var(--muted);transition:color .2s}
.toc-item::before{content:"";position:absolute;left:-18px;top:14px;width:9px;height:9px;border-radius:50%;background:#cbd3ee;border:2px solid #fff;box-shadow:0 0 0 1px #dbe1f5;transition:all .25s}
.toc-item:hover{color:var(--brand)}
.toc-item.active{color:var(--brand);font-weight:800}
.toc-item.active::before{background:var(--brand);box-shadow:0 0 0 3px rgba(79,107,255,.2)}
.hot-list{display:flex;flex-direction:column;gap:13px}
.hot-item{display:flex;align-items:flex-start;gap:12px;transition:all .2s}
.hot-item:hover .hot-title{color:var(--brand)}
.hot-badge{flex:none;width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:900;color:#fff;background:#c3cbe8;transition:transform .2s}
.hot-item:hover .hot-badge{transform:scale(1.12)}
.hot-badge.r1{background:linear-gradient(135deg,#4f6bff,#6f8bff)}
.hot-badge.r2{background:linear-gradient(135deg,#ff8a00,#ffb020)}
.hot-badge.r3{background:linear-gradient(135deg,#ffb020,#ffd76a)}
.hot-title{font-size:13.5px;color:var(--text);line-height:1.5;transition:color .2s}
.hot-date{font-size:11.5px;color:var(--muted);display:block;margin-top:2px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-pill{background:#f2f5ff;border:1px solid #e3e8fa;color:var(--text);font-size:12.5px;font-weight:600;padding:6px 14px;border-radius:16px;transition:all .2s}
.tag-pill:hover{color:var(--brand);border-color:var(--brand)}
.comments{margin-top:44px;padding-top:30px;border-top:1px solid var(--line)}
.comments h2{font-size:20px;font-weight:800;color:var(--ink);margin-bottom:24px;padding-left:14px;border-left:4px solid;border-image:var(--grad) 1}
.comment{display:flex;gap:15px;padding:18px 0;border-bottom:1px dashed var(--line)}
.c-avatar{flex:none;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;color:#fff}
.c-main{flex:1}
.c-top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}
.c-name{font-size:14.5px;font-weight:800;color:var(--ink)}
.c-date{font-size:12px;color:var(--muted)}
.c-text{margin-top:7px;font-size:14px;color:var(--text)}
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:34px}
.pn-card{background:#f4f7ff;border:1px solid var(--line);border-radius:13px;padding:16px 20px;transition:all .25s;display:block}
.pn-card:hover{background:#eaf0ff;transform:translateY(-2px)}
.pn-card span{font-size:12px;color:var(--muted);display:block}
.pn-card b{font-size:14px;color:var(--ink);margin-top:6px;display:block;line-height:1.5}
.pn-card.next{text-align:right}
.back-list{display:inline-flex;align-items:center;gap:7px;margin-top:24px;font-size:14px;font-weight:700;color:var(--brand)}
.back-list:hover{text-decoration:underline}
.rel-read{margin-top:44px}
.rel-read h2{font-size:20px;font-weight:800;color:var(--ink);margin-bottom:20px;padding-left:14px;border-left:4px solid;border-image:var(--grad) 1}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.rel-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:13px;overflow:hidden;transition:all .3s}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.rel-card img{height:120px;width:100%;object-fit:cover}
.rel-card b{display:block;padding:14px 16px 16px;font-size:14px;color:var(--ink);line-height:1.5}
.rel-card:hover b{color:var(--brand)}
.sm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.sm-col{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.sm-col h2{font-size:17px;font-weight:800;color:var(--ink);padding-left:12px;border-left:4px solid;border-image:var(--grad) 1;margin-bottom:18px}
.sm-col a{display:block;padding:8px 0;font-size:14px;color:var(--text);border-bottom:1px dashed var(--line);transition:color .2s}
.sm-col a:hover{color:var(--brand)}
.err-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(150deg,#070c26,#101c4d);color:#fff;text-align:center;padding:40px 20px}
.err-num{font-size:120px;font-weight:900;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.err-title{font-size:24px;font-weight:800;margin-top:16px}
.err-text{margin-top:12px;color:rgba(255,255,255,.7);font-size:15px}
.err-count{margin-top:18px;font-size:14px;color:var(--brand2)}
.err-btn{display:inline-block;margin-top:28px;padding:14px 36px;border-radius:28px;background:var(--grad);color:#fff;font-weight:800;transition:transform .25s}
.err-btn:hover{transform:translateY(-2px)}
.to-top{position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;font-size:19px;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 26px rgba(79,107,255,.4);opacity:0;visibility:hidden;transform:translateY(14px);transition:all .3s;z-index:90}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
@media (max-width:992px){
.hamburger{display:flex}
.nav-menu{position:fixed;top:70px;left:0;right:0;background:rgba(9,14,44,.97);backdrop-filter:blur(16px);flex-direction:column;align-items:stretch;gap:0;padding:12px 20px 22px;max-height:0;overflow:hidden;opacity:0;transition:all .35s ease;box-shadow:0 20px 40px rgba(0,0,0,.3)}
.nav-menu.open{max-height:calc(100vh - 70px);opacity:1;overflow-y:auto}
.nav-link{padding:13px 8px;border-bottom:1px solid rgba(255,255,255,.08)}
.drop-panel{position:static;opacity:1;visibility:visible;transform:none;background:rgba(255,255,255,.06);box-shadow:none;padding:4px 6px 8px;display:none;min-width:0;margin:0 0 4px}
.nav-item.open .drop-panel{display:block}
.drop-item{color:rgba(255,255,255,.8);padding:10px 14px}
.drop-item:hover{background:rgba(255,255,255,.1);color:#fff}
.nav-cta{display:none}
.hero{padding:130px 0 80px}
.hero-wrap{grid-template-columns:1fr;gap:48px}
.hero-title{font-size:36px}
.nodes-grid{grid-template-columns:repeat(2,1fr)}
.features-grid,.scenario-grid,.news-grid,.sys-grid,.rel-grid,.sm-grid{grid-template-columns:repeat(2,1fr)}
.tech-row{grid-template-columns:1fr;gap:22px}
.speed-board{grid-template-columns:1fr;gap:26px}
.steps-grid{grid-template-columns:repeat(2,1fr)}
.pricing-grid{grid-template-columns:1fr;max-width:440px;margin:0 auto}
.ver-grid{grid-template-columns:1fr}
.dl-grid{grid-template-columns:1fr;gap:44px}
.article-layout{grid-template-columns:1fr}
.sidebar{position:static;margin-top:34px}
.article{padding:32px 26px}
.footer-grid{grid-template-columns:1fr 1fr}
.testi-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
.section{padding:60px 0}
.sec-title{font-size:26px}
.hero-title{font-size:29px}
.hero-sub{font-size:15px}
.hero-stats{gap:30px}
.stat-num{font-size:26px}
.nodes-board{padding:32px 22px}
.features-grid,.scenario-grid,.news-grid,.sys-grid,.rel-grid,.sm-grid{grid-template-columns:1fr}
.news-list-item{grid-template-columns:1fr;gap:16px}
.news-list-item img{width:100%;height:170px}
.article h1{font-size:22px}
.article-body{font-size:14.5px}
.prev-next{grid-template-columns:1fr}
.pn-card.next{text-align:left}
.page-hero h1{font-size:29px}
.dl-title{font-size:28px}
.steps-grid{grid-template-columns:1fr 1fr;gap:14px}
.cta-band{padding:48px 22px}
.cta-band h2{font-size:24px}
.nodes-grid{grid-template-columns:repeat(2,1fr);gap:12px}
.demo-gauge{width:170px;height:170px}
}
@media (max-width:480px){
.container{padding:0 16px}
.hero-btns{flex-direction:column;align-items:stretch}
.hero-btns .btn{width:100%}
.hero-stats{gap:22px}
.stat-num{font-size:23px}
.nodes-grid{grid-template-columns:1fr}
.steps-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.article{padding:26px 18px}
.article h1{font-size:20px}
.dl-meta{gap:22px}
.demo-content{padding:16px 14px 20px}
.demo-metrics{gap:18px}
.price-amount b{font-size:36px}
.sec-title{font-size:23px}
}