:root{--bg:#ffffff;--bg2:#f3f7ff;--dark:#081022;--dark2:#0d1b33;--panel:#12234a;--card:#ffffff;--brand:#2b6cff;--brand2:#00c2ff;--grad:linear-gradient(135deg,#2b6cff 0%,#00c2ff 100%);--grad-soft:linear-gradient(135deg,rgba(43,108,255,.12),rgba(0,194,255,.12));--text:#1a2438;--muted:#5b6b85;--line:#e3eaf6;--orange:#ff8a00;--gold:#ffb300;--green:#0fbf7f;--red:#ff5a5a;--radius:16px;--shadow:0 10px 30px rgba(16,40,110,.10);--shadow-lg:0 20px 60px rgba(16,40,110,.16)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 34px;border-radius:50px;font-size:16px;font-weight:600;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;white-space:nowrap}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(43,108,255,.38)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(43,108,255,.5)}
.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);transform:translateY(-2px)}
.btn-lg{padding:16px 44px;font-size:17px}
.btn-sm{padding:10px 22px;font-size:14px}
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:16px 0;transition:background .3s ease,box-shadow .3s ease,padding .3s ease}
.nav.scrolled{background:rgba(8,16,34,.94);backdrop-filter:blur(12px);box-shadow:0 6px 24px rgba(0,0,0,.25);padding:10px 0}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:#fff}
.logo img{width:36px;height:36px;border-radius:9px}
.logo span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-item>a,.nav-item>button{display:flex;align-items:center;gap:6px;padding:10px 16px;color:rgba(255,255,255,.86);font-size:15px;font-weight:500;border-radius:10px;transition:color .2s,background .2s}
.nav-item>a:hover,.nav-item>button:hover{color:#fff;background:rgba(255,255,255,.1)}
.nav-item .arrow{display:inline-block;font-size:11px;transition:transform .25s ease}
.nav-item:hover .arrow{transform:rotate(180deg)}
.dropdown{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(8px);min-width:210px;background:#fff;border-radius:14px;box-shadow:var(--shadow-lg);padding:10px;opacity:0;visibility:hidden;transition:opacity .25s ease,transform .25s ease;z-index:100}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown a{display:block;padding:10px 16px;color:var(--text);font-size:14px;border-radius:9px;transition:background .2s,color .2s}
.dropdown a:hover{background:var(--bg2);color:var(--brand)}
.nav-cta{display:flex;align-items:center;gap:14px}
.burger{display:none;flex-direction:column;gap:5px;padding:8px}
.burger i{display:block;width:24px;height:2px;background:#fff;border-radius:2px;transition:transform .3s,opacity .3s}
.burger.open i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open i:nth-child(2){opacity:0}
.burger.open i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.hero{position:relative;background:radial-gradient(1200px 600px at 70% -10%,rgba(43,108,255,.35),transparent 60%),radial-gradient(900px 500px at 10% 110%,rgba(0,194,255,.22),transparent 55%),var(--dark);color:#fff;padding:160px 0 90px;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse at 50% 0%,#000 30%,transparent 75%)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(43,108,255,.18);border:1px solid rgba(0,194,255,.4);color:#7fd6ff;font-size:13px;font-weight:600;padding:8px 18px;border-radius:50px;margin-bottom:22px}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--brand2);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(0,194,255,.6)}50%{box-shadow:0 0 0 7px rgba(0,194,255,0)}}
.hero-title{font-size:clamp(32px,4.4vw,54px);line-height:1.22;font-weight:800;margin-bottom:18px;letter-spacing:.5px}
.hero-sub{font-size:17px;color:rgba(226,238,255,.82);max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:38px}
.hero-stats{display:flex;gap:0;flex-wrap:wrap}
.stat{min-width:150px;padding-right:32px;margin-right:32px;border-right:1px solid rgba(255,255,255,.14)}
.stat:last-child{border-right:none;margin-right:0}
.stat b{display:block;font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13px;color:rgba(226,238,255,.7)}
.demo{background:linear-gradient(160deg,#10203f,#0b1630);border:1px solid rgba(0,194,255,.28);border-radius:22px;box-shadow:0 30px 80px rgba(0,0,0,.45),0 0 0 1px rgba(255,255,255,.05) inset;overflow:hidden}
.demo-top{display:flex;align-items:center;gap:12px;padding:14px 20px;background:rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.08)}
.demo-dots{display:flex;gap:6px}
.demo-dots i{width:11px;height:11px;border-radius:50%}
.demo-dots i:nth-child(1){background:#ff5f57}
.demo-dots i:nth-child(2){background:#febc2e}
.demo-dots i:nth-child(3){background:#28c840}
.demo-brand{margin-left:6px;font-size:13px;color:rgba(255,255,255,.75)}
.demo-status{margin-left:auto;font-size:12px;font-weight:600;color:#ffb4a9;background:rgba(255,90,90,.16);padding:4px 12px;border-radius:20px;transition:all .3s}
.demo-status.on{color:#7ff0c4;background:rgba(15,191,127,.16)}
.demo-body{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:22px 24px}
.gauge{position:relative;width:190px;margin:0 auto}
.gauge svg{width:100%;display:block}
.gauge-track{fill:none;stroke:rgba(255,255,255,.12);stroke-width:13;stroke-linecap:round}
.gauge-fill{fill:none;stroke:url(#gaugeGrad);stroke-width:13;stroke-linecap:round;stroke-dasharray:251;stroke-dashoffset:251;transition:stroke-dashoffset 1s cubic-bezier(.4,0,.2,1)}
.gauge-needle{position:absolute;left:50%;bottom:6px;width:3px;height:64px;background:linear-gradient(180deg,#fff,var(--brand2));border-radius:3px;transform-origin:50% 100%;transform:translateX(-50%) rotate(-90deg);transition:transform 1s cubic-bezier(.4,0,.2,1)}
.gauge-center{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);text-align:center}
.gauge-center b{display:block;font-size:30px;font-weight:800;color:#fff;line-height:1.1}
.gauge-center span{font-size:11px;color:rgba(255,255,255,.6)}
.demo-side{display:flex;flex-direction:column;justify-content:center;gap:14px}
.demo-speed{text-align:center;padding:12px;background:rgba(43,108,255,.12);border:1px solid rgba(0,194,255,.25);border-radius:14px}
.demo-speed b{font-size:34px;font-weight:800;color:#fff;transition:opacity .2s}
.demo-speed span{font-size:13px;color:rgba(255,255,255,.65);margin-left:4px}
.demo-meta{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.demo-meta>div{background:rgba(255,255,255,.05);border-radius:12px;padding:10px 14px}
.demo-meta span{display:block;font-size:11px;color:rgba(255,255,255,.55)}
.demo-meta b{font-size:14px;color:#fff}
.demo-toggles{display:flex;gap:8px;flex-wrap:wrap}
.toggle{padding:8px 14px;border-radius:20px;font-size:12px;font-weight:600;color:rgba(255,255,255,.65);background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);transition:all .25s}
.toggle.on{color:#fff;background:rgba(43,108,255,.5);border-color:var(--brand2);box-shadow:0 0 14px rgba(0,194,255,.35)}
.demo-nodes{display:flex;gap:8px;flex-wrap:wrap;padding:0 24px 16px}
.node{padding:7px 14px;border-radius:18px;font-size:12.5px;font-weight:500;color:rgba(255,255,255,.68);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);transition:all .25s}
.node:hover{color:#fff;border-color:rgba(0,194,255,.5)}
.node.active{color:#fff;background:var(--grad);border-color:transparent;box-shadow:0 4px 14px rgba(43,108,255,.45)}
.demo-connect{padding:0 24px 22px}
.demo-connect .btn{width:100%}
.section{padding:88px 0}
.section.dark{background:var(--dark);color:#fff}
.section.tint{background:var(--bg2)}
.section-head{text-align:center;max-width:680px;margin:0 auto 54px}
.section-head .kicker{display:inline-block;font-size:13px;font-weight:700;color:var(--brand);background:var(--grad-soft);padding:6px 16px;border-radius:20px;margin-bottom:14px;letter-spacing:1px}
.section-head h2{font-size:clamp(26px,3vw,36px);font-weight:800;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px}
.section.dark .section-head p{color:rgba(226,238,255,.65)}
.section.dark .section-head .kicker{color:var(--brand2)}
.node-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.node-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:22px;transition:transform .25s,border-color .25s}
.node-card:hover{transform:translateY(-5px);border-color:rgba(0,194,255,.5)}
.node-card .region{font-size:15px;font-weight:700;color:#fff;display:flex;align-items:center;gap:8px}
.node-card .flag{width:26px;height:18px;border-radius:4px;background:var(--grad);display:inline-flex;align-items:center;justify-content:center;font-size:10px;color:#fff;flex:none}
.node-card .ping{margin-top:10px;font-size:22px;font-weight:800;color:var(--brand2)}
.node-card .ping small{font-size:12px;color:rgba(255,255,255,.55);font-weight:400}
.node-card .bar{height:5px;border-radius:3px;background:rgba(255,255,255,.12);margin-top:10px;overflow:hidden}
.node-card .bar i{display:block;height:100%;background:var(--grad);border-radius:3px;transition:width 1.2s ease}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feature-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:transform .25s,box-shadow .25s,border-color .25s;position:relative;overflow:hidden}
.feature-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(43,108,255,.35)}
.feature-card:hover::before{transform:scaleX(1)}
.feature-ico{width:52px;height:52px;border-radius:14px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
.feature-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--muted)}
.speed-compare{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}
.speed-panel{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:var(--shadow)}
.speed-panel h3{font-size:18px;margin-bottom:22px;display:flex;align-items:center;gap:10px}
.speed-row{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.speed-row .label{width:88px;font-size:13px;color:var(--muted);flex:none}
.speed-row .track{flex:1;height:10px;border-radius:6px;background:var(--bg2);overflow:hidden}
.speed-row .track i{display:block;height:100%;border-radius:6px;background:var(--grad);width:0;transition:width 1.4s cubic-bezier(.25,.8,.3,1)}
.speed-row .val{width:64px;text-align:right;font-size:14px;font-weight:700;flex:none}
.speed-note{display:flex;gap:22px;flex-wrap:wrap;margin-top:26px}
.speed-note .s-item{flex:1;min-width:120px;background:var(--grad-soft);border-radius:14px;padding:16px;text-align:center}
.speed-note b{display:block;font-size:22px;font-weight:800;color:var(--brand)}
.speed-note span{font-size:12px;color:var(--muted)}
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tech-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:28px;transition:transform .25s,border-color .25s}
.tech-card:hover{transform:translateY(-5px);border-color:rgba(0,194,255,.5)}
.tech-card .num{font-size:13px;font-weight:700;color:var(--brand2);letter-spacing:1px}
.tech-card h3{font-size:18px;font-weight:700;color:#fff;margin:10px 0}
.tech-card p{font-size:14px;color:rgba(226,238,255,.65)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:step}
.step-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:34px 26px;transition:transform .25s,box-shadow .25s}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.step-card::before{counter-increment:step;content:"0" counter(step);position:absolute;top:22px;right:24px;font-size:44px;font-weight:800;color:var(--bg2);line-height:1}
.step-ico{width:56px;height:56px;border-radius:16px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:18px;box-shadow:0 8px 20px rgba(43,108,255,.35)}
.step-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step-card p{font-size:14px;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:transform .25s,box-shadow .25s,border-color .25s;scroll-margin-top:100px}
.scenario-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(43,108,255,.35)}
.scenario-ico{width:50px;height:50px;border-radius:14px;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.scenario-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.scenario-card p{font-size:14px;color:var(--muted)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:34px 30px;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.price-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.price-card.popular{border:2px solid transparent;background:linear-gradient(var(--card),var(--card)) padding-box,var(--grad) border-box;box-shadow:var(--shadow-lg)}
.popular-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:20px;letter-spacing:1px;box-shadow:0 6px 16px rgba(43,108,255,.4)}
.price-card h3{font-size:17px;font-weight:700}
.price-card .desc{font-size:13px;color:var(--muted);margin:6px 0 18px}
.price{display:flex;align-items:baseline;gap:6px;margin-bottom:6px}
.price b{font-size:42px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.price span{font-size:14px;color:var(--muted)}
.price-sub{font-size:12px;color:var(--muted);margin-bottom:22px}
.price-features{flex:1;margin-bottom:26px}
.price-features li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text);padding:7px 0}
.price-features li::before{content:"✓";flex:none;width:20px;height:20px;border-radius:50%;background:var(--grad-soft);color:var(--brand);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px}
.price-card .btn{width:100%}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:16px;margin-bottom:14px;overflow:hidden;transition:border-color .25s}
.faq-item.open{border-color:rgba(43,108,255,.4);box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font-size:16px;font-weight:600;color:var(--text);text-align:left}
.faq-q .qico{flex:none;width:26px;height:26px;border-radius:8px;background:var(--grad-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.faq-q .plus{flex:none;font-size:20px;color:var(--brand);transition:transform .3s}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-a-inner{padding:0 24px 24px;color:var(--muted);font-size:14.5px}
.faq-a-inner .steps-mini{margin-top:10px;display:flex;flex-direction:column;gap:8px}
.faq-a-inner .steps-mini li{display:flex;gap:10px;align-items:flex-start}
.faq-a-inner .steps-mini b{flex:none;width:20px;height:20px;border-radius:50%;background:var(--grad);color:#fff;font-size:11px;display:flex;align-items:center;justify-content:center;margin-top:3px}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.t-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.t-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.t-stars{color:#ffb300;font-size:14px;letter-spacing:2px;margin-bottom:12px}
.t-card>p{font-size:14.5px;color:var(--text);flex:1;margin-bottom:18px}
.t-user{display:flex;align-items:center;gap:12px}
.t-avatar{width:42px;height:42px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;flex:none}
.t-user b{display:block;font-size:14px}
.t-user span{font-size:12px;color:var(--muted)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s,border-color .25s}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(43,108,255,.35)}
.news-card .cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.news-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .cover img{transform:scale(1.06)}
.news-card .cate{position:absolute;top:12px;left:12px;background:rgba(8,16,34,.8);color:#7fd6ff;font-size:11px;font-weight:600;padding:4px 12px;border-radius:16px;backdrop-filter:blur(4px)}
.news-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.news-card .date{font-size:12px;color:var(--muted);margin-bottom:8px}
.news-card h3{font-size:16px;font-weight:700;line-height:1.5;margin-bottom:8px;transition:color .2s}
.news-card:hover h3{color:var(--brand)}
.news-card p{font-size:13.5px;color:var(--muted);flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .more{margin-top:12px;font-size:13px;font-weight:600;color:var(--brand)}
.cta-band{position:relative;background:radial-gradient(900px 400px at 50% 0%,rgba(43,108,255,.45),transparent 60%),var(--dark);border-radius:28px;padding:64px 40px;text-align:center;color:#fff;overflow:hidden}
.cta-band h2{font-size:clamp(24px,3vw,34px);font-weight:800;margin-bottom:14px}
.cta-band p{color:rgba(226,238,255,.75);margin-bottom:30px;font-size:16px}
.footer{background:#060d1f;color:rgba(226,238,255,.72);padding:64px 0 0}
.footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:13.5px;color:rgba(226,238,255,.55);max-width:280px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col a{display:block;font-size:13.5px;padding:6px 0;color:rgba(226,238,255,.6);transition:color .2s,padding-left .2s}
.footer-col a:hover{color:var(--brand2);padding-left:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:rgba(226,238,255,.45)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted);transition:color .2s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#c3cfe2}
.breadcrumb .cur{color:var(--brand);font-weight:600}
.page-hero{background:radial-gradient(1000px 500px at 70% -20%,rgba(43,108,255,.35),transparent 60%),var(--dark);color:#fff;padding:140px 0 70px;text-align:center}
.page-hero h1{font-size:clamp(28px,3.6vw,44px);font-weight:800;margin-bottom:14px}
.page-hero p{color:rgba(226,238,255,.75);max-width:640px;margin:0 auto;font-size:16px}
.article-layout{display:grid;grid-template-columns:1fr 330px;gap:36px;align-items:start}
.article-main{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:36px;box-shadow:var(--shadow)}
.article-main .article-title{font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.4;margin-bottom:16px}
.article-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:26px}
.article-meta .m-item{display:flex;align-items:center;gap:6px}
.article-content h2{font-size:21px;font-weight:700;margin:34px 0 14px;scroll-margin-top:110px;display:flex;align-items:center;gap:10px}
.article-content h2::before{content:"";width:5px;height:22px;border-radius:3px;background:var(--grad);flex:none}
.article-content p{margin-bottom:16px;font-size:15.5px;color:#37445c;text-align:justify}
.article-content img{border-radius:14px;margin:22px 0;width:100%}
.article-content .img-caption{font-size:12px;color:var(--muted);text-align:center;margin:-14px 0 22px}
.article-content blockquote{border-left:4px solid var(--brand2);background:var(--bg2);border-radius:0 12px 12px 0;padding:16px 22px;margin:20px 0;font-size:15px;color:#33415e;font-style:normal}
.article-content blockquote b{color:var(--brand)}
.article-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
.article-tags a{font-size:12px;color:var(--brand);background:var(--grad-soft);padding:5px 14px;border-radius:16px;transition:background .2s}
.article-tags a:hover{background:rgba(43,108,255,.18)}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:30px}
.pager a{display:block;border:1px solid var(--line);border-radius:14px;padding:16px 20px;transition:border-color .2s,box-shadow .2s;background:var(--card)}
.pager a:hover{border-color:rgba(43,108,255,.4);box-shadow:var(--shadow)}
.pager .dir{font-size:12px;color:var(--muted)}
.pager .tt{font-size:14.5px;font-weight:600;margin-top:4px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.pager a.next{text-align:right}
.comments{margin-top:36px}
.comments h3{font-size:19px;font-weight:700;margin-bottom:20px;display:flex;align-items:center;gap:10px}
.comment{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}
.comment:last-child{border-bottom:none}
.c-avatar{flex:none;width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700}
.comment .c-head{display:flex;align-items:center;gap:10px;margin-bottom:4px}
.comment .c-head b{font-size:14px}
.comment .c-head span{font-size:12px;color:var(--muted)}
.comment p{font-size:14px;color:#37445c;margin:0}
.sidebar{position:sticky;top:100px;display:flex;flex-direction:column;gap:22px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.side-card h4{font-size:15px;font-weight:700;margin-bottom:16px;padding-left:12px;border-left:4px solid var(--brand);line-height:1.3}
.toc-list{position:relative}
.toc-list::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:var(--line)}
.toc-item{position:relative;padding:7px 0 7px 26px;font-size:13.5px;color:var(--muted);cursor:pointer;transition:color .2s;line-height:1.5}
.toc-item::before{content:"";position:absolute;left:2px;top:13px;width:10px;height:10px;border-radius:50%;background:#fff;border:2px solid #c3cfe2;transition:all .25s}
.toc-item:hover{color:var(--brand)}
.toc-item.active{color:var(--brand);font-weight:700}
.toc-item.active::before{background:var(--brand);border-color:var(--brand);box-shadow:0 0 0 4px rgba(43,108,255,.18)}
.hot-list li{display:flex;align-items:flex-start;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line)}
.hot-list li:last-child{border-bottom:none}
.rank-badge{flex:none;width:24px;height:24px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff;background:#a8b4c8;transition:transform .2s}
.rank-badge.r1{background:var(--grad);box-shadow:0 4px 10px rgba(43,108,255,.4)}
.rank-badge.r2{background:linear-gradient(135deg,#ff8a00,#ffb300)}
.rank-badge.r3{background:linear-gradient(135deg,#d4a017,#ffd54a)}
.hot-list a{font-size:13.5px;color:var(--text);line-height:1.5;transition:color .2s;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-list li:hover .rank-badge{transform:scale(1.12)}
.hot-list li:hover a{color:var(--brand)}
.tags{display:flex;flex-wrap:wrap;gap:9px}
.tags a{font-size:12.5px;color:var(--muted);border:1px solid var(--line);padding:6px 14px;border-radius:16px;transition:all .2s}
.tags a::before{content:"#";color:#c3cfe2;margin-right:2px}
.tags a:hover{color:var(--brand);border-color:var(--brand);background:var(--grad-soft)}
.related{margin-top:36px;padding-top:28px;border-top:1px solid var(--line)}
.related h3{font-size:18px;font-weight:700;margin-bottom:16px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.related a{display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color .2s,transform .2s}
.related a:hover{border-color:rgba(43,108,255,.4);transform:translateY(-3px)}
.related img{aspect-ratio:16/9;object-fit:cover;width:100%}
.related span{display:block;padding:10px 14px;font-size:13px;font-weight:600;line-height:1.5;color:var(--text)}
.version-list{display:flex;flex-direction:column;gap:18px;max-width:900px;margin:0 auto}
.version-card{display:grid;grid-template-columns:1.2fr 1.6fr auto;gap:24px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px 30px;transition:border-color .25s,box-shadow .25s}
.version-card:hover{border-color:rgba(43,108,255,.4);box-shadow:var(--shadow-lg)}
.version-card .v-name{font-size:18px;font-weight:700;display:flex;align-items:center;gap:10px}
.version-card .v-badge{font-size:11px;font-weight:700;color:var(--brand);background:var(--grad-soft);padding:3px 10px;border-radius:12px}
.version-card .v-meta{font-size:12.5px;color:var(--muted);margin-top:6px}
.version-card ul li{font-size:13.5px;color:#37445c;padding:3px 0;display:flex;gap:8px;align-items:flex-start}
.version-card ul li::before{content:"✓";color:var(--green);font-weight:700;flex:none}
.sysreq-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:980px;margin:0 auto}
.sysreq-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;transition:transform .25s,box-shadow .25s}
.sysreq-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.sysreq-card .s-ico{font-size:26px;margin-bottom:12px}
.sysreq-card h3{font-size:15px;font-weight:700;margin-bottom:8px}
.sysreq-card p{font-size:13.5px;color:var(--muted)}
.install-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:ins}
.install-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px 22px;position:relative;transition:transform .25s,box-shadow .25s}
.install-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.install-card::before{counter-increment:ins;content:counter(ins);position:absolute;top:16px;right:20px;font-size:38px;font-weight:800;color:var(--bg2)}
.install-card .i-ico{width:46px;height:46px;border-radius:13px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:14px}
.install-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.install-card p{font-size:13.5px;color:var(--muted)}
.page-404{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(1000px 500px at 50% 0%,rgba(43,108,255,.3),transparent 60%),var(--dark);color:#fff;text-align:center;padding:120px 24px 60px}
.e404{font-size:clamp(90px,16vw,170px);font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-404 h1{font-size:26px;margin:18px 0 12px}
.page-404 p{color:rgba(226,238,255,.7);margin-bottom:10px;font-size:15px}
.page-404 .countdown{color:var(--brand2);font-weight:700}
.sitemap-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;text-align:left;max-width:1000px;margin:0 auto}
.sitemap-col{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px}
.sitemap-col h3{font-size:16px;font-weight:700;margin-bottom:14px;padding-left:12px;border-left:4px solid var(--brand)}
.sitemap-col a{display:block;font-size:14px;color:var(--muted);padding:6px 0;transition:color .2s,padding-left .2s}
.sitemap-col a:hover{color:var(--brand);padding-left:8px}
.to-top{position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;font-size:18px;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 22px rgba(43,108,255,.45);opacity:0;visibility:hidden;transition:all .3s;z-index:900}
.to-top.show{opacity:1;visibility:visible}
.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:130px 0 60px}
.hero-grid{grid-template-columns:1fr;gap:44px}
.burger{display:flex}
.nav-links{position:fixed;top:64px;left:0;right:0;background:rgba(8,16,34,.98);backdrop-filter:blur(14px);flex-direction:column;align-items:stretch;gap:4px;padding:18px 24px 30px;display:none;max-height:calc(100vh - 64px);overflow-y:auto;box-shadow:0 30px 50px rgba(0,0,0,.5)}
.nav-links.open{display:flex}
.nav-item>a,.nav-item>button{width:100%;justify-content:space-between;padding:13px 16px;font-size:16px}
.dropdown{position:static;transform:none;min-width:0;background:rgba(255,255,255,.06);box-shadow:none;opacity:1;visibility:visible;display:none;margin:2px 0 8px;padding:6px}
.nav-item.drop-open .dropdown{display:block}
.nav-item:hover .dropdown{transform:none}
.dropdown a{color:rgba(255,255,255,.85);padding:11px 18px}
.dropdown a:hover{background:rgba(255,255,255,.1);color:#fff}
.nav-cta .btn{padding:11px 24px;font-size:14px}
.features-grid{grid-template-columns:repeat(2,1fr)}
.node-grid{grid-template-columns:repeat(2,1fr)}
.tech-grid{grid-template-columns:repeat(2,1fr)}
.steps{grid-template-columns:1fr}
.speed-compare{grid-template-columns:1fr}
.scenario-grid{grid-template-columns:repeat(2,1fr)}
.pricing-grid{grid-template-columns:1fr;max-width:440px;margin:0 auto}
.testimonials-grid{grid-template-columns:repeat(2,1fr)}
.news-grid{grid-template-columns:repeat(2,1fr)}
.article-layout{grid-template-columns:1fr}
.sidebar{position:static;display:grid;grid-template-columns:1fr;gap:22px}
.footer-cols{grid-template-columns:repeat(2,1fr)}
.version-card{grid-template-columns:1fr;gap:16px}
.install-steps{grid-template-columns:repeat(2,1fr)}
.sysreq-grid{grid-template-columns:repeat(2,1fr)}
.sitemap-wrap{grid-template-columns:1fr}
.related-grid{grid-template-columns:repeat(2,1fr)}
.demo-body{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
.section{padding:60px 0}
.hero{padding:120px 0 50px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.stat{min-width:0;padding:0 14px;margin:0;border-right:1px solid rgba(255,255,255,.14)}
.stat b{font-size:24px}
.demo-body{grid-template-columns:1fr}
.demo-side{margin-top:6px}
.features-grid{grid-template-columns:1fr}
.node-grid{grid-template-columns:1fr}
.tech-grid{grid-template-columns:1fr}
.scenario-grid{grid-template-columns:1fr}
.testimonials-grid{grid-template-columns:1fr}
.news-grid{grid-template-columns:1fr}
.footer-cols{grid-template-columns:1fr;gap:26px}
.article-main{padding:24px 20px}
.pager{grid-template-columns:1fr}
.related-grid{grid-template-columns:1fr}
.install-steps{grid-template-columns:1fr}
.sysreq-grid{grid-template-columns:1fr}
.cta-band{padding:48px 24px}
.btn-lg{padding:14px 34px;font-size:16px}
}
@media(max-width:480px){
.container{padding:0 16px}
.hero-title{font-size:28px}
.hero-sub{font-size:15px}
.hero-actions{flex-direction:column}
.hero-actions .btn{width:100%}
.stat b{font-size:21px}
.stat span{font-size:11px}
.gauge{width:160px}
.demo-nodes{padding:0 16px 14px}
.section-head h2{font-size:24px}
.price b{font-size:34px}
}