:root{--bg:#070b16;--bg2:#0a1120;--card:#101a30;--card2:#0c1526;--line:rgba(148,163,184,.16);--txt:#e8eefb;--muted:#93a3bd;--brand:#22d3ee;--brand2:#4f7cff;--grad:linear-gradient(135deg,#22d3ee,#4f7cff);--radius:18px;--shadow:0 18px 44px rgba(2,7,18,.45)}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--txt);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:#7fe9f7}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:800;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit}
.wrap{max-width:1200px;margin:0 auto;padding:0 22px}
.skip{position:absolute;left:-9999px;top:0;background:#fff;color:#0b1224;padding:10px 16px;z-index:300;border-radius:0 0 10px 0}
.skip:focus{left:0}
.hd{position:fixed;left:0;right:0;top:0;z-index:100;background:rgba(7,11,22,.74);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:background .3s,border-color .3s}
.hd.scrolled{background:rgba(7,11,22,.96);border-bottom-color:var(--line)}
.hd-in{max-width:1200px;margin:0 auto;padding:0 22px;height:70px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:800;white-space:nowrap}
.brand:hover{color:#fff}
.brand img{width:36px;height:36px;border-radius:10px;border:1px solid rgba(34,211,238,.35)}
.navt{position:absolute;opacity:0;pointer-events:none}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:11px;align-items:center;justify-content:center;cursor:pointer;margin-left:auto}
.burger span,.burger span::before,.burger span::after{display:block;width:18px;height:2px;background:var(--txt);border-radius:2px;position:relative;content:""}
.burger span::before{position:absolute;top:-6px}
.burger span::after{position:absolute;top:6px}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.ng{position:relative}
.ngt{position:absolute;opacity:0;pointer-events:none}
.ngl{display:flex;align-items:center;gap:5px;padding:9px 12px;color:var(--muted);font-size:15px;cursor:pointer;border-radius:9px;transition:.2s;white-space:nowrap}
.ngl:hover,.ng:hover .ngl,.ngt:checked+.ngl,.ngl:focus-visible{color:#fff;background:rgba(255,255,255,.06)}
.car{font-size:9px;transition:transform .25s;color:var(--brand)}
.ng:hover .car,.ngt:checked+.ngl .car{transform:rotate(180deg)}
.np{position:absolute;top:calc(100% + 6px);left:0;min-width:196px;background:#fff;border-radius:14px;padding:8px;box-shadow:0 20px 46px rgba(0,0,0,.4);display:none;z-index:110}
.ng:hover .np,.ng:focus-within .np,.ngt:checked+.ngl+.np{display:block}
.np a{display:block;padding:9px 12px;color:#1b2740;font-size:14px;border-radius:9px;transition:.18s}
.np a:hover{background:#eef4ff;color:#1d4ed8}
.nav-cta{margin-left:10px}
.nav-cta .btn{padding:10px 18px;font-size:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:12px;background:var(--grad);color:#04121c;font-weight:800;font-size:15px;border:0;cursor:pointer;box-shadow:0 12px 28px rgba(34,211,238,.22);transition:transform .22s,box-shadow .22s}
.btn:hover{color:#04121c;transform:translateY(-2px);box-shadow:0 16px 34px rgba(34,211,238,.32)}
.btn-ghost{background:transparent;color:var(--txt);border:1px solid rgba(148,163,184,.4);box-shadow:none}
.btn-ghost:hover{color:#fff;border-color:var(--brand);background:rgba(34,211,238,.07);box-shadow:none}
.btn-sm{padding:10px 18px;font-size:14px}
.hero{position:relative;padding:148px 0 66px;overflow:hidden;background:radial-gradient(900px 520px at 80% -12%,rgba(79,124,255,.28),transparent 70%),radial-gradient(700px 440px at 6% 18%,rgba(34,211,238,.14),transparent 72%)}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(148,163,184,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.055) 1px,transparent 1px);background-size:52px 52px;-webkit-mask-image:radial-gradient(62% 62% at 50% 34%,#000,transparent);mask-image:radial-gradient(62% 62% at 50% 34%,#000,transparent);pointer-events:none}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border:1px solid rgba(34,211,238,.3);border-radius:999px;color:var(--brand);font-size:12.5px;letter-spacing:.6px;background:rgba(34,211,238,.07)}
.hero h1{font-size:50px;margin:18px 0 18px;letter-spacing:-.5px}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.hero .lead{font-size:17px;color:var(--muted);max-width:560px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:26px}
.hstat b{display:block;font-size:26px;color:#fff;line-height:1.2}
.hstat span{font-size:12.5px;color:var(--muted)}
.demo{background:linear-gradient(160deg,rgba(19,31,54,.96),rgba(8,14,27,.98));border:1px solid rgba(148,163,184,.22);border-radius:22px;box-shadow:var(--shadow);overflow:hidden;position:relative}
.demo::before{content:"";position:absolute;inset:0;background:radial-gradient(420px 220px at 78% 0,rgba(34,211,238,.16),transparent 70%);pointer-events:none}
.demo-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted);position:relative}
.dot{width:9px;height:9px;border-radius:50%;background:#334155}
.dot.r{background:#f87171}.dot.y{background:#fbbf24}.dot.g{background:#34d399}
.demo-bar .mock-t{margin-left:8px;color:#cbd5e1}
.demo-bar .pill{margin-left:auto;padding:2px 9px;border:1px solid var(--line);border-radius:999px;font-size:11px;color:var(--brand)}
.demo-body{padding:18px 18px 20px;position:relative}
.conn-toggle{position:absolute;opacity:0;pointer-events:none}
.conn-btn{display:flex;align-items:center;gap:12px;cursor:pointer;padding:12px 14px;border:1px solid rgba(34,211,238,.28);border-radius:14px;background:rgba(34,211,238,.06);transition:.25s}
.conn-btn:hover{background:rgba(34,211,238,.1)}
.conn-ico{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--grad);color:#04121c;font-size:18px;font-weight:800;flex:none}
.conn-txt{font-size:13px;color:var(--muted);display:flex;flex-direction:column;line-height:1.4}
.conn-txt b{color:#fff;font-size:15px}
.conn-txt .on{display:none}
.conn-toggle:checked~.conn-btn .on{display:block}
.conn-toggle:checked~.conn-btn .off{display:none}
.conn-toggle:checked~.conn-btn{border-color:rgba(52,211,153,.5);background:rgba(52,211,153,.07)}
.conn-toggle:checked~.conn-btn .conn-ico{background:linear-gradient(135deg,#34d399,#22d3ee)}
.conn-state{margin-left:auto;font-size:11px;color:var(--muted);border:1px solid var(--line);padding:3px 8px;border-radius:999px}
.gauge{position:relative;margin:10px auto 4px;width:190px}
.gauge svg{width:100%;height:auto;display:block}
.gauge .track{fill:none;stroke:rgba(148,163,184,.18);stroke-width:10;stroke-linecap:round}
.gauge .arc{fill:none;stroke:url(#gg);stroke-width:10;stroke-linecap:round;stroke-dasharray:251;stroke-dashoffset:74;transition:stroke-dashoffset .9s ease}
.conn-toggle:not(:checked)~.gauge .arc{stroke-dashoffset:243}
.g-num{position:absolute;left:0;right:0;bottom:8px;text-align:center;line-height:1.1}
.g-num b{font-size:32px;color:#fff;letter-spacing:-1px}
.g-num span{font-size:12px;color:var(--muted);display:block;margin-top:2px}
.nodes{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin:8px 0 14px}
.node input{position:absolute;opacity:0;pointer-events:none}
.node label{display:block;text-align:center;padding:9px 4px;border:1px solid var(--line);border-radius:10px;font-size:11.5px;color:var(--muted);cursor:pointer;transition:.2s;line-height:1.5}
.node label b{display:block;color:#dbe7f8;font-size:12.5px;font-weight:600}
.node input:checked+label{border-color:var(--brand);background:rgba(34,211,238,.1);color:var(--brand)}
.node input:focus-visible+label{outline:2px solid var(--brand)}
.demo-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;border-top:1px solid var(--line);padding-top:13px;text-align:center}
.demo-metrics b{display:block;font-size:15px;color:#fff}
.demo-metrics span{font-size:10.5px;color:var(--muted)}
.band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(10,17,32,.6)}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.band-item{padding:26px 18px;text-align:center;border-right:1px solid var(--line)}
.band-item:last-child{border-right:0}
.band-item b{display:block;font-size:28px;color:#fff}
.band-item span{font-size:13px;color:var(--muted)}
.sec{padding:82px 0}
.sec-alt{background:linear-gradient(180deg,rgba(10,17,32,.65),rgba(7,11,22,0))}
.sec-hd{max-width:780px;margin:0 auto 44px;text-align:center}
.sec-tag{display:inline-block;padding:5px 12px;border-radius:999px;background:rgba(34,211,238,.09);border:1px solid rgba(34,211,238,.22);color:var(--brand);font-size:12px;letter-spacing:1px}
.sec-title{font-size:36px;margin:12px 0 14px}
.sec-desc{color:var(--muted);font-size:16px}
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:linear-gradient(180deg,rgba(19,30,52,.92),rgba(11,19,34,.94));border:1px solid var(--line);border-radius:var(--radius);padding:25px;transition:transform .26s,box-shadow .26s,border-color .26s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-5px);box-shadow:0 20px 42px rgba(2,7,18,.5);border-color:rgba(34,211,238,.34)}
.ico{width:46px;height:46px;display:grid;place-items:center;border-radius:13px;background:rgba(34,211,238,.1);font-size:22px;margin-bottom:15px}
.card h3{font-size:17px;margin-bottom:9px}
.card p{font-size:14px;color:var(--muted);line-height:1.8}
.net-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:22px;align-items:stretch}
.net-panel{background:linear-gradient(180deg,rgba(19,30,52,.92),rgba(11,19,34,.94));border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.net-panel h3{font-size:19px;margin-bottom:18px}
.region{padding:13px 0;border-bottom:1px dashed rgba(148,163,184,.16)}
.region:last-child{border-bottom:0;padding-bottom:0}
.region-top{display:flex;align-items:center;justify-content:space-between;font-size:14px;margin-bottom:8px}
.region-top span{color:var(--muted)}
.region-top b{color:#fff}
.region-top em{font-style:normal;color:var(--brand);font-size:12.5px;margin-left:8px}
.bar{height:8px;border-radius:9px;background:rgba(148,163,184,.14);overflow:hidden}
.bar i{display:block;height:100%;border-radius:9px;background:var(--grad)}
.net-side{display:grid;grid-template-rows:auto 1fr;gap:18px}
.net-note{background:linear-gradient(140deg,rgba(34,211,238,.12),rgba(79,124,255,.13));border:1px solid rgba(34,211,238,.28);border-radius:var(--radius);padding:26px}
.net-note h3{font-size:20px;margin-bottom:10px}
.net-note p{color:#c6d5ea;font-size:14px}
.net-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:18px}
.net-stats div{background:rgba(4,10,20,.42);border:1px solid var(--line);border-radius:12px;padding:12px;text-align:center}
.net-stats b{display:block;font-size:20px;color:#fff}
.net-stats span{font-size:11px;color:var(--muted)}
.net-list{background:linear-gradient(180deg,rgba(19,30,52,.92),rgba(11,19,34,.94));border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.net-list h4{font-size:14px;color:var(--muted);font-weight:500;letter-spacing:1px;margin-bottom:12px}
.city{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid rgba(148,163,184,.1);font-size:14px}
.city:last-child{border-bottom:0}
.city span{color:#dbe7f8}
.city b{color:var(--brand);font-weight:600}
.scen-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.scen{background:linear-gradient(160deg,rgba(19,30,52,.9),rgba(11,19,34,.92));border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.26s}
.scen:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.36);box-shadow:0 18px 38px rgba(2,7,18,.45)}
.scen-ico{font-size:26px;margin-bottom:12px}
.scen h3{font-size:17px;margin-bottom:8px}
.scen p{font-size:14px;color:var(--muted)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:st}
.step{position:relative;background:rgba(16,26,48,.7);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px}
.step-no{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:1px;margin-bottom:12px}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
.price{position:relative;background:linear-gradient(180deg,rgba(19,30,52,.94),rgba(11,19,34,.96));border:1px solid var(--line);border-radius:20px;padding:30px 26px;display:flex;flex-direction:column;transition:.26s}
.price:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.34)}
.price.pop{border-color:var(--brand);box-shadow:0 22px 48px rgba(34,211,238,.16);transform:translateY(-8px)}
.price.pop:hover{transform:translateY(-12px)}
.badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--grad);color:#04121c;font-size:12px;font-weight:800;padding:4px 14px;border-radius:999px;white-space:nowrap}
.price h3{font-size:18px;color:#dbe7f8}
.price-amt{margin:14px 0 2px;font-size:38px;font-weight:800;color:#fff;letter-spacing:-1px}
.price-amt small{font-size:13px;font-weight:500;color:var(--muted);letter-spacing:0}
.price .p-note{font-size:12.5px;color:var(--muted);margin-bottom:18px}
.price-list{margin:0 0 24px;display:grid;gap:10px;font-size:14px;color:#c6d5ea}
.price-list li{display:flex;gap:9px;align-items:flex-start}
.price-list li::before{content:"✓";color:var(--brand);font-weight:800;flex:none}
.price .btn{margin-top:auto;width:100%}
.faq-grid{max-width:900px;margin:0 auto}
.faq-grid details{background:rgba(16,26,48,.8);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
.faq-grid summary{cursor:pointer;padding:17px 54px 17px 20px;font-weight:600;font-size:15.5px;position:relative;list-style:none}
.faq-grid summary::-webkit-details-marker{display:none}
.faq-grid summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--brand);line-height:1}
.faq-grid details[open] summary::after{content:"−"}
.faq-grid details[open] summary{color:#fff}
.faq-a{padding:0 20px 19px;color:var(--muted);font-size:14.5px;line-height:1.9}
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.rev{background:linear-gradient(170deg,rgba(19,30,52,.92),rgba(11,19,34,.94));border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.stars{color:#fbbf24;font-size:14px;letter-spacing:2px;margin-bottom:12px}
.rev p{font-size:14.5px;color:#c6d5ea;margin-bottom:16px}
.rev-who{display:flex;align-items:center;gap:10px}
.av{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:rgba(34,211,238,.14);color:var(--brand);font-weight:800;font-size:13px;flex:none}
.rev-who b{display:block;font-size:13.5px;color:#fff;font-weight:600;line-height:1.4}
.rev-who span{font-size:11.5px;color:var(--muted)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{display:flex;flex-direction:column;background:rgba(16,26,48,.82);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.26s;color:var(--txt)}
.news-card:hover{transform:translateY(-5px);border-color:rgba(34,211,238,.36);box-shadow:0 20px 42px rgba(2,7,18,.5);color:var(--txt)}
.news-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0b1224}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .thumb img{transform:scale(1.04)}
.nc-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:9px;flex:1}
.nc-meta{display:flex;align-items:center;gap:10px;font-size:11.5px;color:var(--muted)}
.nc-tag{color:var(--brand);background:rgba(34,211,238,.09);border:1px solid rgba(34,211,238,.2);padding:1px 8px;border-radius:999px}
.news-card h3{font-size:16.5px;line-height:1.55;color:#fff}
.news-card .nc-desc{font-size:13px;color:var(--muted);line-height:1.75}
.nc-more{margin-top:auto;font-size:12.5px;color:var(--brand)}
.cta{position:relative;padding:70px 0;overflow:hidden;background:radial-gradient(620px 300px at 50% 0,rgba(34,211,238,.16),transparent 70%),linear-gradient(180deg,rgba(10,17,32,.4),rgba(7,11,22,1))}
.cta-box{text-align:center;border:1px solid rgba(34,211,238,.26);border-radius:24px;padding:52px 26px;background:linear-gradient(160deg,rgba(19,30,52,.92),rgba(9,15,29,.96))}
.cta-box h2{font-size:34px;margin-bottom:12px}
.cta-box p{color:var(--muted);margin-bottom:24px}
.ft{background:#050912;border-top:1px solid var(--line);padding:56px 0 24px}
.ft-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.ft-brand p{color:var(--muted);font-size:13.5px;margin-top:12px;max-width:320px}
.ft h4{font-size:14px;color:#fff;margin-bottom:14px}
.ft-col a{display:block;color:var(--muted);font-size:13.5px;padding:5px 0}
.ft-col a:hover{color:var(--brand)}
.ft-bottom{border-top:1px solid var(--line);margin-top:38px;padding-top:20px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.ft-bottom a{color:var(--muted)}
.ft-bottom a:hover{color:var(--brand)}
.to-top{position:fixed;right:22px;bottom:24px;width:44px;height:44px;border-radius:50%;background:rgba(16,26,48,.92);border:1px solid var(--line);display:grid;place-items:center;color:var(--brand);z-index:90;box-shadow:0 10px 24px rgba(0,0,0,.35)}
.to-top:hover{color:#fff;border-color:var(--brand)}
.page-hero{padding:136px 0 44px;text-align:center;background:radial-gradient(700px 360px at 50% -10%,rgba(79,124,255,.24),transparent 70%)}
.page-hero h1{font-size:42px;margin-bottom:14px}
.page-hero p{color:var(--muted);max-width:720px;margin:0 auto;font-size:16px}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:16px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs span{margin:0 7px;color:#4b5b75}
.article-hero{padding:130px 0 0}
.article-head h1{font-size:38px;margin-bottom:16px;line-height:1.32}
.meta{display:flex;flex-wrap:wrap;gap:14px;color:var(--muted);font-size:13.5px;align-items:center}
.meta .m-tag{color:var(--brand);border:1px solid rgba(34,211,238,.24);background:rgba(34,211,238,.07);padding:1px 9px;border-radius:999px}
.cover{border-radius:18px;overflow:hidden;margin:24px 0 36px;border:1px solid var(--line);background:#0b1224}
.cover img{width:100%;height:auto}
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:38px;align-items:start;padding-bottom:70px}
.article-body{font-size:16.5px;color:#c9d5e8;min-width:0}
.article-body p{margin:0 0 20px;line-height:1.95}
.article-body h2{font-size:26px;color:#fff;margin:38px 0 16px;padding-left:14px;border-left:4px solid var(--brand);scroll-margin-top:96px}
.article-body strong{color:#fff}
.article-body img{width:100%;border-radius:14px;margin:8px 0 24px;border:1px solid var(--line)}
.article-body blockquote{margin:28px 0;padding:20px 22px;background:rgba(34,211,238,.06);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:#dbe7f8;font-size:15.5px;line-height:1.9}
.article-body blockquote cite{display:block;margin-top:9px;font-style:normal;font-size:12.5px;color:var(--brand)}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin:30px 0 0}
.article-tags a{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:4px 11px}
.article-tags a:hover{color:var(--brand);border-color:var(--brand)}
.share{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px}
.pager a{display:block;background:rgba(16,26,48,.75);border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:#dbe7f8;font-size:13.5px}
.pager a:hover{border-color:var(--brand);color:var(--brand)}
.pager span{display:block;font-size:11px;color:var(--muted);margin-bottom:4px}
.pager .next{text-align:right}
.pager-empty{display:block;background:rgba(16,26,48,.4);border:1px dashed var(--line);border-radius:12px;padding:14px 16px;color:var(--muted);font-size:13px}
.pager-empty.next{text-align:right}
.back-list{display:inline-block;margin-top:22px;font-size:13.5px}
.comments{margin-top:38px;border-top:1px solid var(--line);padding-top:28px}
.comments h2{font-size:22px;margin-bottom:18px;padding:0;border:0}
.comment{display:flex;gap:12px;padding:16px 0;border-bottom:1px solid rgba(148,163,184,.12)}
.comment:last-child{border-bottom:0}
.cmt-main{min-width:0}
.cmt-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:4px}
.cmt-head b{color:#fff;font-size:13.5px}
.cmt-main p{font-size:14px;color:#c6d5ea;line-height:1.8;margin:0}
.related{margin-top:36px}
.related h2{font-size:22px;margin-bottom:16px;padding:0;border:0}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.related-grid a{display:block;background:rgba(16,26,48,.78);border:1px solid var(--line);border-radius:12px;padding:14px;font-size:13.5px;color:#dbe7f8;line-height:1.65}
.related-grid a:hover{border-color:var(--brand);color:var(--brand)}
.side{position:sticky;top:92px;display:grid;gap:16px}
.side-card{background:#fff;border-radius:14px;padding:18px;color:#1b2740;box-shadow:0 14px 36px rgba(2,7,18,.35)}
.side-t{font-size:14px;font-weight:800;color:#101b30;position:relative;padding-left:11px;margin-bottom:14px}
.side-t::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:3px;border-radius:3px;background:linear-gradient(180deg,#22d3ee,#4f7cff)}
.toc{position:relative;padding-left:16px}
.toc::before{content:"";position:absolute;left:4px;top:6px;bottom:6px;width:1px;background:#e2e8f0}
.toc a{position:relative;display:block;padding:6px 0;font-size:13px;color:#64748b;line-height:1.6}
.toc a::before{content:"";position:absolute;left:-15px;top:13px;width:7px;height:7px;border-radius:50%;background:#cbd5e1;border:1px solid #fff}
.toc a.active{color:#0e7490;font-weight:700}
.toc a.active::before{background:#22d3ee}
.hot a{display:flex;gap:9px;align-items:flex-start;padding:8px 0;font-size:12.5px;color:#3b4a63;line-height:1.6;border-bottom:1px solid #f1f5f9}
.hot a:last-child{border-bottom:0}
.hot a:hover{color:#0e7490}
.rank{flex:none;width:19px;height:19px;border-radius:5px;display:grid;place-items:center;font-size:11px;font-weight:800;background:#e2e8f0;color:#64748b;margin-top:1px}
.rank.r1{background:linear-gradient(135deg,#22d3ee,#4f7cff);color:#fff}
.rank.r2{background:linear-gradient(135deg,#fb923c,#f97316);color:#fff}
.rank.r3{background:linear-gradient(135deg,#facc15,#eab308);color:#fff}
.tags{display:flex;flex-wrap:wrap;gap:7px}
.tags a{font-size:11.5px;color:#475569;border:1px solid #e2e8f0;border-radius:999px;padding:3px 9px}
.tags a:hover{color:#0e7490;border-color:#22d3ee;background:#ecfeff}
.legal{max-width:860px;margin:0 auto;padding-bottom:70px;color:#c9d5e8;font-size:15.5px}
.legal h2{font-size:23px;color:#fff;margin:34px 0 12px}
.legal h2:first-child{margin-top:0}
.legal p{margin:0 0 15px;line-height:1.95}
.legal ul{margin:0 0 15px;display:grid;gap:8px}
.legal li{padding-left:16px;position:relative;line-height:1.9}
.legal li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.legal .upd{color:var(--muted);font-size:13px;margin-bottom:24px}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.dl-card{background:linear-gradient(180deg,rgba(19,30,52,.94),rgba(11,19,34,.96));border:1px solid var(--line);border-radius:18px;padding:26px;display:flex;flex-direction:column}
.dl-card .os{font-size:15px;color:#fff;font-weight:700;display:flex;align-items:center;gap:8px}
.dl-card .ver{font-size:12px;color:var(--brand);margin:8px 0 2px}
.dl-card .size{font-size:12.5px;color:var(--muted);margin-bottom:16px}
.dl-card ul{display:grid;gap:8px;font-size:13px;color:#c6d5ea;margin-bottom:22px}
.dl-card li{display:flex;gap:8px}
.dl-card li::before{content:"✓";color:var(--brand);flex:none}
.dl-card .btn{margin-top:auto;width:100%}
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.req{background:rgba(16,26,48,.72);border:1px solid var(--line);border-radius:13px;padding:18px}
.req b{display:block;font-size:12px;color:var(--brand);letter-spacing:.5px;margin-bottom:5px}
.req span{font-size:14px;color:#dbe7f8}
.install-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.install{background:rgba(16,26,48,.72);border:1px solid var(--line);border-radius:14px;padding:22px}
.install b{display:block;font-size:12px;color:var(--brand);margin-bottom:8px;letter-spacing:1px}
.install h3{font-size:16px;margin-bottom:6px}
.install p{font-size:13px;color:var(--muted)}
.map-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.map-col{background:rgba(16,26,48,.72);border:1px solid var(--line);border-radius:14px;padding:22px}
.map-col h2{font-size:16px;margin-bottom:12px;color:#fff}
.map-col a{display:block;padding:6px 0;font-size:13.5px;color:var(--muted)}
.map-col a:hover{color:var(--brand)}
.nf{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:120px 22px 80px}
.nf-code{font-size:110px;font-weight:900;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-4px}
.nf h1{font-size:28px;margin:14px 0 10px}
.nf p{color:var(--muted);margin-bottom:22px}
.nf-links{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.mt-8{margin-top:8px}
.mt-24{margin-top:24px}
.center{text-align:center}
.note{font-size:12.5px;color:var(--muted)}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}
@media(max-width:992px){
.nav{position:fixed;left:0;right:0;top:70px;background:#0a1120;border-bottom:1px solid var(--line);display:none;flex-direction:column;align-items:stretch;gap:2px;padding:12px 18px 22px;max-height:calc(100vh - 70px);overflow:auto;box-shadow:0 24px 40px rgba(0,0,0,.45)}
.navt:checked~.nav{display:flex}
.burger{display:flex}
.nav-cta{margin:10px 0 0}
.nav-cta .btn{width:100%}
.ngl{justify-content:space-between;padding:12px 10px;font-size:15.5px}
.np{position:static;display:none;background:rgba(255,255,255,.05);box-shadow:none;margin:0 0 8px;padding:5px;border-radius:10px}
.ng:hover .np,.ng:focus-within .np{display:none}
.ngt:checked+.ngl+.np{display:block}
.np a{color:#c6d5ea;padding:9px 12px}
.np a:hover{background:rgba(34,211,238,.1);color:var(--brand)}
.hero{padding:120px 0 56px}
.hero-grid{grid-template-columns:1fr;gap:38px}
.hero h1{font-size:42px}
.demo{max-width:560px}
.band-grid{grid-template-columns:repeat(2,1fr)}
.band-item:nth-child(2){border-right:0}
.band-item:nth-child(1),.band-item:nth-child(2){border-bottom:1px solid var(--line)}
.feat-grid{grid-template-columns:repeat(2,1fr)}
.net-grid{grid-template-columns:1fr}
.scen-grid{grid-template-columns:repeat(2,1fr)}
.steps{grid-template-columns:1fr}
.price-grid{grid-template-columns:1fr;gap:26px}
.price.pop{transform:none}
.price.pop:hover{transform:translateY(-4px)}
.rev-grid{grid-template-columns:1fr}
.news-grid{grid-template-columns:repeat(2,1fr)}
.ft-grid{grid-template-columns:1.4fr 1fr 1fr}
.ft-brand{grid-column:1/-1}
.article-wrap{grid-template-columns:1fr}
.side{position:static;grid-template-columns:1fr;order:2}
.article-body{order:1}
.dl-grid{grid-template-columns:1fr}
.req-grid{grid-template-columns:repeat(2,1fr)}
.install-grid{grid-template-columns:repeat(2,1fr)}
.map-grid{grid-template-columns:repeat(2,1fr)}
.article-head h1{font-size:32px}
.page-hero h1{font-size:36px}
}
@media(max-width:768px){
.wrap{padding:0 16px}
.sec{padding:62px 0}
.sec-title{font-size:29px}
.hero h1{font-size:34px}
.hero .lead{font-size:15.5px}
.hero-stats{gap:20px}
.hstat b{font-size:22px}
.band-item b{font-size:23px}
.feat-grid{gap:12px}
.card{padding:20px}
.scen-grid{grid-template-columns:1fr}
.news-grid{grid-template-columns:1fr}
.cta-box h2{font-size:26px}
.ft-grid{grid-template-columns:1fr 1fr}
.related-grid{grid-template-columns:1fr}
.pager{grid-template-columns:1fr}
.article-head h1{font-size:28px}
.article-body{font-size:15.5px}
.article-body h2{font-size:22px}
.article-hero{padding-top:112px}
.cover{margin:18px 0 26px;border-radius:12px}
.install-grid{grid-template-columns:1fr}
.req-grid{grid-template-columns:1fr}
.map-grid{grid-template-columns:1fr}
.nf-code{font-size:84px}
}
@media(max-width:480px){
.hero{padding:104px 0 44px}
.hero h1{font-size:29px}
.hero-btns .btn{width:100%}
.demo-body{padding:14px}
.nodes{gap:5px}
.demo-bar .mock-t{font-size:11px}
.band-grid{grid-template-columns:1fr 1fr}
.band-item{padding:18px 10px}
.band-item b{font-size:20px}
.band-item span{font-size:11.5px}
.feat-grid{grid-template-columns:1fr}
.sec-title{font-size:25px}
.ft-grid{grid-template-columns:1fr}
.ft-bottom{flex-direction:column;align-items:flex-start}
.g-num b{font-size:27px}
.article-head h1{font-size:24px}
.article-tags,.meta{gap:8px}
.to-top{right:14px;bottom:14px;width:40px;height:40px}
}