*{margin:0;padding:0;box-sizing:border-box}
:root{--p1:#2563eb;--p2:#06b6d4;--p3:#22d3ee;--dark:#0b1220;--dark2:#111a2e;--ink:#0f172a;--gray:#5b6b84;--gray2:#8a99b3;--line:#e2e8f0;--bg:#f6f9fc;--card:#ffffff;--grad:linear-gradient(120deg,#2563eb,#06b6d4);--grad2:linear-gradient(120deg,#06b6d4,#22d3ee);--r:16px;--shadow:0 10px 30px rgba(11,18,32,.08)}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--p1);text-decoration:none}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.3}
.sec{padding:84px 0}
.sec-alt{background:#eef4fb}
.sec-head{text-align:center;max-width:720px;margin:0 auto 48px}
.sec-tag{display:inline-block;padding:6px 16px;border-radius:999px;background:rgba(34,211,238,.12);color:#0e7490;font-size:13px;font-weight:600;margin-bottom:14px;letter-spacing:1px}
.sec-title{font-size:34px;font-weight:800;color:var(--ink);margin-bottom:12px}
.sec-title span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-sub{color:var(--gray);font-size:16px}
html.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
html.js .reveal.in{opacity:1;transform:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;border:none;transition:transform .2s,box-shadow .2s;line-height:1.4}
.btn-main{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(37,99,235,.35)}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(6,182,212,.4)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.25)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-line{background:#fff;color:var(--p1);border:1px solid #bfdbfe}
.btn-line:hover{border-color:var(--p2)}
.btn-big{padding:16px 40px;font-size:17px}
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(11,18,32,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:background .3s}
html.js .nav{background:rgba(11,18,32,.45)}
html.js .nav.scrolled{background:rgba(11,18,32,.94);box-shadow:0 6px 24px rgba(2,6,23,.35)}
.nav-inner{display:flex;align-items:center;height:68px;gap:28px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:20px;flex-shrink:0}
.logo img{width:34px;height:34px;border-radius:9px}
.logo em{font-style:normal;background:var(--grad2);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:6px;color:#dbe6f5;padding:10px 14px;border-radius:10px;font-size:15px;font-weight:500;cursor:pointer}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-link .arr{transition:transform .25s;font-size:11px}
.nav-item:hover>.nav-link .arr,.nav-item:focus-within>.nav-link .arr{transform:rotate(180deg)}
.submenu{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(8px);min-width:190px;background:#fff;border-radius:14px;box-shadow:0 18px 40px rgba(2,6,23,.18);padding:8px;opacity:0;visibility:hidden;transition:all .25s}
.nav-item:hover .submenu,.nav-item:focus-within .submenu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.submenu a{display:block;padding:9px 14px;border-radius:9px;color:var(--ink);font-size:14px}
.submenu a:hover{background:#eef4fb;color:var(--p1)}
.nav-cta{margin-left:6px}
.nav-toggle{display:none}
.toggle-box{display:none;width:42px;height:42px;margin-left:auto;border-radius:10px;cursor:pointer;position:relative}
.toggle-box span,.toggle-box span::before,.toggle-box span::after{content:"";position:absolute;left:9px;width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.toggle-box span{top:20px}
.toggle-box span::before{top:-8px;left:0}
.toggle-box span::after{top:8px;left:0}
.nav-toggle:checked~.toggle-box span{background:transparent}
.nav-toggle:checked~.toggle-box span::before{top:0;transform:rotate(45deg)}
.nav-toggle:checked~.toggle-box span::after{top:0;transform:rotate(-45deg)}
.hero{position:relative;padding:150px 0 96px;background:radial-gradient(1200px 600px at 80% -10%,rgba(6,182,212,.35),transparent 60%),radial-gradient(900px 500px at 10% 10%,rgba(37,99,235,.4),transparent 55%),linear-gradient(160deg,#0b1220,#0d1b33 60%,#0b1220);color:#fff;overflow:hidden}
.hero::before{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(800px 500px at 50% 0,#000,transparent);-webkit-mask-image:radial-gradient(800px 500px at 50% 0,#000,transparent)}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;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,.14);border:1px solid rgba(34,211,238,.35);color:#a5f3fc;font-size:13px;font-weight:600;margin-bottom:22px}
.hero h1{font-size:46px;font-weight:800;margin-bottom:18px;letter-spacing:1px}
.hero h1 span{background:var(--grad2);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:18px;color:#b7c6dc;margin-bottom:32px;max-width:520px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);padding-top:28px}
.stat b{display:block;font-size:30px;font-weight:800;background:var(--grad2);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13px;color:#93a5c2}
.demo{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:20px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);padding:22px;box-shadow:0 30px 60px rgba(2,6,23,.4)}
.demo-bar{display:flex;align-items:center;gap:8px;margin-bottom:18px}
.demo-dot{width:11px;height:11px;border-radius:50%}
.demo-dot:nth-child(1){background:#f87171}.demo-dot:nth-child(2){background:#fbbf24}.demo-dot:nth-child(3){background:#34d399}
.demo-title{color:#93a5c2;font-size:13px;margin-left:10px}
.demo-status{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:14px;background:rgba(255,255,255,.06);margin-bottom:16px}
.demo-status i{width:12px;height:12px;border-radius:50%;background:#f87171;display:inline-block;flex-shrink:0}
.demo-status b{font-size:15px}
.demo-status small{color:#93a5c2;display:block;font-size:12px}
.demo-conn-check{display:none}
.demo-conn-check:checked~.demo-status i{background:#34d399;box-shadow:0 0 12px #34d399}
.demo-status .st-on{display:none}
.demo-conn-check:checked~.demo-status .st-off{display:none}
.demo-conn-check:checked~.demo-status .st-on{display:inline}
.demo-status .sm-on{display:none}
.demo-conn-check:checked~.demo-status .sm-off{display:none}
.demo-conn-check:checked~.demo-status .sm-on{display:inline}
.demo-connect{display:flex;align-items:center;justify-content:center;gap:10px;background:var(--grad);color:#fff;border:none;border-radius:14px;padding:15px;font-size:16px;font-weight:700;cursor:pointer;margin-bottom:16px;transition:transform .2s}
.demo-connect:hover{transform:translateY(-2px)}
.demo-connect::before{content:"";width:18px;height:18px;border:2px solid #fff;border-radius:50%;border-left-color:transparent;animation:spin 1.2s linear infinite}
.demo-conn-check:checked~.demo-connect::before{animation:none;border-color:#fff;border-radius:4px;background:radial-gradient(circle,#fff 40%,transparent 42%)}
@keyframes spin{to{transform:rotate(360deg)}}
.demo-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.metric{background:rgba(255,255,255,.06);border-radius:12px;padding:12px 14px}
.metric span{display:block;font-size:12px;color:#93a5c2;margin-bottom:2px}
.metric b{font-size:19px;color:#a5f3fc}
.demo-gauge{position:relative;width:132px;height:132px;margin:0 auto 6px;border-radius:50%;background:conic-gradient(rgba(255,255,255,.12) 0 100%)}
.demo-conn-check:checked~.demo-gauge{background:conic-gradient(var(--p3) 0 40%,rgba(255,255,255,.1) 40% 100%)}
.demo-gauge::before{content:"";position:absolute;inset:14px;border-radius:50%;background:var(--dark2)}
.demo-gauge .gauge-val{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;z-index:1}
.gauge-val b{font-size:26px;color:#a5f3fc}
.gauge-val span{font-size:11px;color:#93a5c2}
.demo-conn-check:checked~.demo-gauge{animation:gaugeIn .5s ease}
@keyframes gaugeIn{from{opacity:.4}to{opacity:1}}
.demo-gauge::after{content:"";position:absolute;top:8px;left:50%;margin-left:-2px;width:4px;height:12px;background:var(--p3);border-radius:2px;transform-origin:2px 58px;transform:rotate(-70deg);transition:transform 1.4s cubic-bezier(.3,.8,.3,1)}
.demo-conn-check:checked~.demo-gauge::after{transform:rotate(120deg)}
.demo-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.demo-select{flex:1;min-width:150px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:#fff;border-radius:10px;padding:9px 12px;font-size:13px;outline:none}
.demo-select option{color:#0f172a}
.switch{display:inline-flex;align-items:center;gap:8px;color:#c7d4e8;font-size:13px;cursor:pointer}
.switch input{display:none}
.switch i{width:36px;height:20px;border-radius:999px;background:rgba(255,255,255,.15);position:relative;transition:.3s}
.switch i::after{content:"";position:absolute;top:3px;left:3px;width:14px;height:14px;border-radius:50%;background:#fff;transition:.3s}
.switch input:checked+i{background:var(--p2)}
.switch input:checked+i::after{left:19px}
.f-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.f-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px 24px;transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden}
.f-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);transform:scaleX(0);transition:transform .3s}
.f-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.f-card:hover::before{transform:scaleX(1)}
.f-ico{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,rgba(37,99,235,.12),rgba(6,182,212,.12));display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
.f-title{font-size:17px;font-weight:700;margin-bottom:8px}
.f-desc{font-size:14px;color:var(--gray)}
.node-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.node-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:transform .25s}
.node-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.node-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.node-name{font-weight:700;font-size:17px}
.node-ping{color:#0e7490;font-weight:700;font-size:15px}
.ping-bar{height:8px;border-radius:4px;background:#eef4fb;overflow:hidden;margin-bottom:8px}
.ping-fill{height:100%;border-radius:4px;background:var(--grad)}
.node-meta{font-size:13px;color:var(--gray2);display:flex;justify-content:space-between}
.speed-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.speed-card{background:var(--dark);border-radius:var(--r);padding:28px 24px;color:#fff}
.speed-card h3{font-size:14px;color:#93a5c2;font-weight:500;margin-bottom:10px}
.speed-num{font-size:34px;font-weight:800;background:var(--grad2);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}
.speed-num i{font-style:normal;font-size:15px;margin-left:2px}
.speed-bar{height:8px;border-radius:4px;background:rgba(255,255,255,.1);overflow:hidden}
.bar-fill{height:100%;border-radius:4px;background:var(--grad)}
.speed-note{font-size:12px;color:#93a5c2;margin-top:10px}
.proto-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.proto-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px 24px;text-align:center;transition:transform .25s}
.proto-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.proto-card .f-ico{margin:0 auto 14px}
.proto-card h3{font-size:17px;margin-bottom:8px}
.proto-card p{font-size:14px;color:var(--gray)}
.sc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.sc-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;transition:transform .25s,box-shadow .25s}
.sc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.sc-card .f-ico{margin-bottom:14px}
.sc-card h3{font-size:17px;margin-bottom:8px}
.sc-card p{font-size:14px;color:var(--gray)}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step-card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:34px 26px;text-align:center}
.step-num{width:54px;height:54px;margin:0 auto 16px;border-radius:50%;background:var(--grad);color:#fff;font-size:22px;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(37,99,235,.3)}
.step-card h3{font-size:18px;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--gray)}
.pricing-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:20px;padding:34px 28px;position:relative;transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.price-hot{border:2px solid var(--p2);box-shadow:0 20px 50px rgba(6,182,212,.18);transform:scale(1.03)}
.price-hot:hover{transform:scale(1.03) translateY(-6px)}
.hot-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:5px 18px;border-radius:999px;white-space:nowrap}
.price-name{font-size:18px;font-weight:700;margin-bottom:16px}
.price{display:flex;align-items:baseline;gap:4px;margin-bottom:6px}
.price-num{font-size:42px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.price-unit{color:var(--gray);font-size:14px}
.price-sub{font-size:13px;color:var(--gray2);margin-bottom:22px}
.price-list li{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--gray);margin-bottom:12px}
.price-list li::before{content:"✓";color:var(--p2);font-weight:700;flex-shrink:0}
.price-btn{margin-top:auto}
.faq{max-width:840px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:20px 24px;font-weight:700;font-size:16px;user-select:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;color:var(--p2);transition:transform .3s;flex-shrink:0;margin-left:12px}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-a{padding:0 24px 22px;color:var(--gray);font-size:15px;border-top:1px dashed var(--line);padding-top:16px;margin:0 24px 22px}
.faq-a ol{padding-left:22px;margin-top:8px}
.faq-a li{margin-bottom:6px}
.t-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.t-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 24px}
.t-stars{color:#f59e0b;letter-spacing:2px;margin-bottom:12px;font-size:15px}
.t-text{font-size:14px;color:var(--gray);margin-bottom:18px}
.t-user{display:flex;align-items:center;gap:12px}
.t-ava{width:42px;height:42px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.t-name{font-weight:700;font-size:15px}
.t-role{font-size:12px;color:var(--gray2)}
.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(--r);overflow:hidden;transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.news-img{position:relative;aspect-ratio:16/9;overflow:hidden}
.news-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .news-img img{transform:scale(1.06)}
.news-tag{position:absolute;top:12px;left:12px;background:rgba(11,18,32,.75);color:#a5f3fc;font-size:12px;padding:4px 12px;border-radius:999px}
.news-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.news-date{font-size:12px;color:var(--gray2);margin-bottom:8px}
.news-title{font-size:16px;font-weight:700;color:var(--ink);line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-ex{font-size:13px;color:var(--gray);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-more{font-size:13px;font-weight:600;color:var(--p1);margin-top:auto}
.cta{background:radial-gradient(1000px 420px at 20% 0,rgba(6,182,212,.4),transparent 55%),linear-gradient(150deg,#0b1220,#0d1b33);color:#fff;text-align:center;padding:80px 24px}
.cta h2{font-size:34px;font-weight:800;margin-bottom:14px}
.cta p{color:#b7c6dc;margin-bottom:32px}
.cta .hero-btns{justify-content:center;margin-bottom:0}
.footer{background:#070d18;color:#93a5c2;padding:60px 0 0}
.f-grid4{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08)}
.f-brand img{width:38px;height:38px;border-radius:10px;margin-bottom:14px}
.f-brand p{font-size:14px;max-width:280px}
.f-brand .logo{font-size:18px;margin-bottom:12px}
.f-col h4{color:#fff;font-size:16px;margin-bottom:18px}
.f-col a{display:block;color:#93a5c2;font-size:14px;margin-bottom:12px}
.f-col a:hover{color:var(--p3)}
.f-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:22px 0 28px;font-size:13px}
.crumb{background:#eef4fb;padding:16px 0;font-size:14px;color:var(--gray)}
.crumb a{color:var(--gray)}
.crumb a:hover{color:var(--p1)}
.crumb b{color:var(--ink);font-weight:600}
.crumb span{margin:0 8px;color:#b6c3d6}
.page-hero{background:linear-gradient(150deg,#0b1220,#0d1b33);color:#fff;padding:120px 0 64px;text-align:center}
.page-hero h1{font-size:36px;font-weight:800;margin-bottom:12px}
.page-hero p{color:#b7c6dc;max-width:640px;margin:0 auto}
.dl-hero{background:radial-gradient(1100px 560px at 80% -10%,rgba(6,182,212,.35),transparent 60%),linear-gradient(160deg,#0b1220,#0d1b33 60%,#0b1220);color:#fff;padding:120px 0 80px}
.dl-grid-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.dl-hero h1{font-size:42px;font-weight:800;margin-bottom:16px}
.dl-hero h1 span{background:var(--grad2);-webkit-background-clip:text;background-clip:text;color:transparent}
.dl-hero .hero-sub{color:#b7c6dc;margin-bottom:28px}
.dl-meta{display:flex;gap:36px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);padding-top:24px;margin-top:28px}
.dl-meta .stat b{font-size:24px}
.v-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.vcard{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:30px 26px;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.vcard:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.vcard h3{font-size:19px;margin-bottom:6px}
.vcard .v-ver{color:#0e7490;font-size:13px;font-weight:600;margin-bottom:4px}
.vcard .v-size{font-size:13px;color:var(--gray2);margin-bottom:18px}
.vcard ul{margin-bottom:22px}
.vcard li{display:flex;gap:8px;font-size:14px;color:var(--gray);margin-bottom:10px}
.vcard li::before{content:"✓";color:var(--p2);font-weight:700;flex-shrink:0}
.sysreq{max-width:860px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden}
.sysreq table{width:100%;border-collapse:collapse}
.sysreq td{padding:16px 26px;font-size:15px;border-bottom:1px solid var(--line);color:var(--gray)}
.sysreq tr:last-child td{border-bottom:none}
.sysreq td:first-child{width:180px;color:var(--ink);font-weight:600;background:#f2f7fd}
.step-h{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step-h .step-card{padding:30px 22px}
.step-h .step-num{width:46px;height:46px;font-size:19px}
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.article-main{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:40px 44px;min-width:0}
.article-main h1{font-size:28px;font-weight:800;line-height:1.45;margin:18px 0 14px}
.article-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--gray2);padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:26px}
.article-cover{border-radius:14px;overflow:hidden;margin-bottom:26px}
.article-main h2{font-size:21px;font-weight:700;margin:32px 0 14px;padding-left:12px;border-left:4px solid var(--p2);scroll-margin-top:90px}
.article-main p{margin-bottom:16px;color:#33415c;text-align:justify}
.article-main img.body-img{border-radius:12px;margin:10px 0 22px}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);flex-wrap:wrap}
.article-nav a{font-size:14px;max-width:46%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.back-list{display:inline-block;margin-top:16px;font-size:14px}
.sidebar{position:sticky;top:88px;display:flex;flex-direction:column;gap:22px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 8px 24px rgba(11,18,32,.06)}
.side-card h3{font-size:16px;font-weight:700;padding-left:12px;border-left:4px solid var(--p2);margin-bottom:16px}
.toc-item{position:relative;padding:8px 0 8px 20px;display:block;color:var(--gray);font-size:14px;line-height:1.5}
.toc-item::before{content:"";position:absolute;left:4px;top:0;bottom:0;width:2px;background:var(--line)}
.toc-item::after{content:"";position:absolute;left:0;top:16px;width:10px;height:10px;border-radius:50%;background:#fff;border:2px solid #cbd5e1}
.toc-item:hover{color:var(--p1)}
.toc-item.active{color:var(--p1);font-weight:700}
.toc-item.active::after{background:var(--p2);border-color:var(--p2);box-shadow:0 0 8px rgba(34,211,238,.6)}
.rank-item{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line)}
.rank-item:last-child{border-bottom:none}
.rank-badge{width:24px;height:24px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff;background:#cbd5e1;flex-shrink:0;transition:transform .25s}
.rank-item:nth-child(1) .rank-badge{background:var(--grad)}
.rank-item:nth-child(2) .rank-badge{background:linear-gradient(135deg,#f97316,#fb923c)}
.rank-item:nth-child(3) .rank-badge{background:linear-gradient(135deg,#f59e0b,#fbbf24)}
.rank-item:hover .rank-badge{transform:scale(1.15)}
.rank-item a{font-size:13px;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.5}
.rank-item a:hover{color:var(--p1)}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag-pill{font-size:13px;color:var(--gray);border:1px solid var(--line);padding:6px 14px;border-radius:999px;transition:.25s}
.tag-pill:hover{color:var(--p1);border-color:var(--p1);background:rgba(37,99,235,.05)}
.comments{margin-top:36px;padding-top:28px;border-top:1px solid var(--line)}
.comments h3{font-size:18px;margin-bottom:20px}
.comment{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.comment:last-child{border-bottom:none}
.c-ava{width:38px;height:38px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.c-head{display:flex;gap:10px;align-items:baseline;margin-bottom:4px}
.c-name{font-weight:700;font-size:14px}
.c-date{font-size:12px;color:var(--gray2)}
.c-text{font-size:14px;color:var(--gray)}
.newslist{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.newslist .news-card{flex-direction:row}
.newslist .news-img{width:44%;aspect-ratio:auto;flex-shrink:0}
.newslist .news-img img{height:100%}
.policy{max-width:860px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:44px 48px}
.policy h2{font-size:21px;margin:30px 0 12px;padding-left:12px;border-left:4px solid var(--p2);scroll-margin-top:90px}
.policy h2:first-child{margin-top:0}
.policy p{margin-bottom:14px;color:#33415c}
.policy ul{padding-left:22px;margin-bottom:14px}
.policy li{margin-bottom:8px;color:#33415c;list-style:disc}
.policy .update{font-size:13px;color:var(--gray2);margin-bottom:26px}
.sm-wrap{max-width:960px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:44px}
.sm-col{margin-bottom:30px}
.sm-col h2{font-size:19px;margin-bottom:14px;padding-left:12px;border-left:4px solid var(--p2)}
.sm-col ul{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.sm-col a{display:block;padding:11px 16px;background:#f2f7fd;border-radius:10px;font-size:14px;color:var(--ink)}
.sm-col a:hover{background:#e0eefc;color:var(--p1)}
.e404{min-height:80vh;display:flex;align-items:center;justify-content:center;text-align:center;background:linear-gradient(160deg,#0b1220,#0d1b33);color:#fff}
.e404 .num{font-size:120px;font-weight:800;background:var(--grad2);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
.e404 h1{font-size:26px;margin:10px 0 14px}
.e404 p{color:#93a5c2;margin-bottom:30px}
.e404 a.btn-main{color:#fff}
.to-top{position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:12px;background:var(--grad);color:#fff;border:none;font-size:18px;cursor:pointer;box-shadow:0 10px 24px rgba(37,99,235,.4);display:none;z-index:90;transition:transform .25s}
.to-top:hover{transform:translateY(-3px)}
.to-top.show{display:block}
@media(max-width:992px){
.nav-toggle{display:none}
.toggle-box{display:block}
.nav-menu{position:fixed;top:68px;left:0;right:0;background:#0b1220;flex-direction:column;align-items:stretch;padding:16px 20px 26px;gap:4px;max-height:0;overflow:hidden;opacity:0;visibility:hidden;transition:.35s;margin-left:0;box-shadow:0 24px 40px rgba(2,6,23,.5)}
.nav-toggle:checked~.nav-menu{max-height:calc(100vh - 68px);overflow-y:auto;opacity:1;visibility:visible}
.nav-item{width:100%}
.nav-link{padding:13px 12px}
.submenu{position:static;transform:none;min-width:0;background:rgba(255,255,255,.05);box-shadow:none;opacity:1;visibility:visible;max-height:0;overflow:hidden;padding:0 8px;transition:.3s}
.nav-item:hover .submenu,.nav-item:focus-within .submenu,.nav-item.open .submenu{max-height:400px;padding:8px}
.submenu a{color:#c7d4e8;background:rgba(255,255,255,.04);margin-bottom:4px}
.nav-cta{margin:10px 0 0}
.nav-cta .btn{width:100%}
.hero-grid,.dl-grid-wrap{grid-template-columns:1fr;gap:44px}
.hero{padding:130px 0 80px}
.hero h1{font-size:38px}
.f-grid,.speed-grid{grid-template-columns:repeat(2,1fr)}
.node-grid,.proto-grid,.sc-grid,.step-grid,.pricing-grid,.t-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
.price-hot{transform:none}
.price-hot:hover{transform:translateY(-6px)}
.article-layout{grid-template-columns:1fr}
.sidebar{position:static;flex-direction:row;flex-wrap:wrap}
.side-card{flex:1 1 260px}
.step-h{grid-template-columns:repeat(2,1fr)}
.newslist{grid-template-columns:1fr}
.f-grid4{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
.sec{padding:60px 0}
.sec-title{font-size:27px}
.f-grid,.speed-grid,.node-grid,.proto-grid,.sc-grid,.step-grid,.pricing-grid,.t-grid,.news-grid,.v-grid{grid-template-columns:1fr}
.hero h1,.dl-hero h1{font-size:32px}
.hero-stats{gap:26px}
.article-main{padding:26px 22px}
.article-main h1{font-size:23px}
.policy{padding:30px 24px}
.sm-col ul{grid-template-columns:1fr}
.dl-meta{gap:22px}
.sysreq td{padding:13px 16px;font-size:14px}
.sysreq td:first-child{width:110px}
.footer .f-grid4{grid-template-columns:1fr 1fr;gap:28px}
}
@media(max-width:480px){
.container{padding:0 16px}
.hero{padding:120px 0 64px}
.hero h1,.dl-hero h1{font-size:27px}
.hero-sub{font-size:16px}
.hero-btns .btn{width:100%}
.demo{padding:16px}
.article-nav a{max-width:100%}
.newslist .news-card{flex-direction:column}
.newslist .news-img{width:100%;aspect-ratio:16/9}
.f-grid4{grid-template-columns:1fr}
.step-h{grid-template-columns:1fr}
.e404 .num{font-size:88px}
}