:root{--brand:#2563eb;--brand2:#06b6d4;--brand3:#7c3aed;--accent:#f97316;--ink:#0e1526;--ink2:#1b2537;--muted:#5d6a80;--line:#e4eaf3;--bg:#f6f8fc;--card:#fff;--dark:#0a1124;--radius:18px;--shadow:0 8px 24px rgba(15,35,70,.07);--shadow2:0 18px 42px rgba(15,35,70,.14);--max:1180px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:#1d4ed8}
h1,h2,h3,h4{margin:0 0 14px;line-height:1.3;letter-spacing:-.01em}
h1{font-size:clamp(30px,4vw,50px);font-weight:800}
h2{font-size:clamp(24px,3vw,36px);font-weight:800}
h3{font-size:20px;font-weight:700}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 22px}
.section{padding:84px 0}
.section.tight{padding:56px 0}
.bg-white{background:#fff}
.bg-soft{background:linear-gradient(180deg,#f2f6fd 0%,#f8fafd 100%)}
.center{text-align:center}
.section-head{max-width:760px;margin:0 auto 46px;text-align:center}
.section-head p{color:var(--muted);margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(37,99,235,.09);color:var(--brand);font-size:13px;font-weight:700;letter-spacing:.04em;margin-bottom:14px}
.eyebrow.on-dark{background:rgba(255,255,255,.1);color:#a5f3fc}
.hl{background:linear-gradient(120deg,#2563eb,#06b6d4 60%,#7c3aed);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:18px;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 28px;border-radius:12px;font-weight:700;font-size:16px;border:1.5px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;min-height:48px}
.btn-primary{background:linear-gradient(120deg,#2563eb,#06b6d4);color:#fff;box-shadow:0 10px 24px rgba(37,99,235,.3)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(37,99,235,.38)}
.btn-ghost{border-color:rgba(255,255,255,.4);color:#fff;background:rgba(255,255,255,.06)}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px)}
.btn-outline{border-color:#c9d6ea;color:var(--ink);background:#fff}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px;min-height:42px;border-radius:10px}
.btn-block{width:100%}
header.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;transition:background .3s ease,box-shadow .3s ease,padding .3s ease;padding:14px 0;background:rgba(10,17,36,.28);backdrop-filter:blur(10px)}
header.site-header.scrolled{background:rgba(9,15,32,.94);box-shadow:0 10px 30px rgba(4,10,25,.35);padding:8px 0}
header.site-header.solid{background:rgba(9,15,32,.96);padding:8px 0;box-shadow:0 8px 26px rgba(4,10,25,.28)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:19px;letter-spacing:.01em}
.logo:hover{color:#fff}
.logo img{width:36px;height:36px;border-radius:9px;box-shadow:0 4px 14px rgba(6,182,212,.3)}
.logo small{display:block;font-size:10px;font-weight:600;letter-spacing:.22em;color:#7dd3fc;text-transform:uppercase;line-height:1.2}
.nav-toggle{display:none}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu>li{position:relative}
.nav-menu>li>a,.sub-head{display:flex;align-items:center;gap:5px;padding:10px 14px;color:#e6edf9;font-size:15px;font-weight:600;border-radius:9px;cursor:pointer}
.nav-menu>li>a:hover,.sub-head:hover{color:#fff;background:rgba(255,255,255,.1)}
.arrow{font-size:11px;transition:transform .25s ease;display:inline-block;color:#8fb6ff}
.has-sub:hover .arrow,.sub-toggle:checked~.sub-head .arrow{transform:rotate(180deg)}
.sub-toggle{display:none}
.submenu{position:absolute;top:calc(100% + 10px);left:0;min-width:214px;background:#fff;border-radius:14px;box-shadow:0 18px 44px rgba(10,25,55,.2);padding:9px;opacity:0;visibility:hidden;transform:translateY(8px);transition:all .22s ease}
.has-sub:hover .submenu{opacity:1;visibility:visible;transform:translateY(0)}
.sub-toggle:checked~.submenu{opacity:1;visibility:visible;transform:translateY(0)}
.submenu a{display:block;padding:10px 13px;border-radius:9px;color:var(--ink2);font-size:14px;font-weight:600}
.submenu a:hover{background:#f1f6ff;color:var(--brand)}
.nav-cta{background:linear-gradient(120deg,#2563eb,#06b6d4);color:#fff!important;padding:11px 20px;border-radius:10px;font-weight:700;font-size:15px;box-shadow:0 8px 20px rgba(6,182,212,.28)}
.nav-cta:hover{color:#fff!important;transform:translateY(-1px)}
.hamburger{display:none;width:44px;height:44px;border-radius:10px;background:rgba(255,255,255,.1);cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.hamburger span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:.25s}
.hero{position:relative;overflow:hidden;padding:158px 0 96px;background:radial-gradient(1200px 620px at 78% 8%,rgba(37,99,235,.4),transparent 62%),radial-gradient(900px 520px at 8% 88%,rgba(6,182,212,.24),transparent 60%),linear-gradient(160deg,#080e20 0%,#0d1730 55%,#0a1124 100%);color:#fff}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(circle at 50% 40%,#000 45%,transparent 80%);pointer-events:none}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}
.hero h1{color:#fff;margin:14px 0 18px}
.hero .lead{color:#c3d2ea;font-size:18px;max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-note{display:flex;flex-wrap:wrap;gap:20px;color:#9fb3d1;font-size:13px}
.hero-note b{color:#fff;font-weight:700}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:34px;max-width:540px}
.hero-stat{padding:16px 18px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1)}
.hero-stat b{display:block;font-size:26px;line-height:1.2;color:#fff;font-weight:800}
.hero-stat span{font-size:12px;color:#9fb3d1}
.demo-card{background:linear-gradient(165deg,rgba(20,34,64,.96),rgba(10,18,38,.98));border:1px solid rgba(120,180,255,.22);border-radius:22px;padding:18px;box-shadow:0 30px 70px rgba(2,8,24,.55);position:relative}
.demo-card::before{content:"";position:absolute;inset:-1px;border-radius:23px;padding:1px;background:linear-gradient(130deg,rgba(6,182,212,.5),rgba(124,58,237,.25),transparent 60%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.demo-head{display:flex;align-items:center;justify-content:space-between;padding:4px 4px 14px}
.demo-head .brandline{display:flex;align-items:center;gap:9px;font-weight:700;font-size:14px;color:#e8f2ff}
.demo-head .brandline img{width:24px;height:24px;border-radius:6px}
.demo-head .live{font-size:11px;color:#67e8f9;background:rgba(6,182,212,.14);border:1px solid rgba(6,182,212,.35);padding:4px 10px;border-radius:999px;font-weight:700;letter-spacing:.06em}
.demo-state{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 14px;border-radius:12px;background:rgba(6,182,212,.09);border:1px solid rgba(6,182,212,.22);margin-bottom:14px}
.demo-state b{font-size:14px;color:#7ff0ff;display:flex;align-items:center;gap:8px}
.demo-state b::before{content:"";width:8px;height:8px;border-radius:50%;background:#22d3ee;box-shadow:0 0 0 4px rgba(34,211,238,.18)}
.demo-state span{font-size:11px;color:#9fb3d1;letter-spacing:.04em}
.gauge{position:relative;width:200px;height:200px;margin:6px auto 14px;border-radius:50%;background:conic-gradient(from 210deg,#06b6d4 0deg,#2563eb 218deg,rgba(255,255,255,.07) 218deg 300deg,transparent 300deg);display:flex;align-items:center;justify-content:center;transition:filter .4s ease}
.gauge::after{content:"";position:absolute;inset:13px;border-radius:50%;background:radial-gradient(circle at 50% 35%,#142748,#0a142b 72%);border:1px solid rgba(120,180,255,.18)}
.gauge .gauge-in{position:relative;z-index:2;text-align:center}
.gauge .gauge-in b{display:block;font-size:34px;color:#fff;line-height:1.1;font-weight:800}
.gauge .gauge-in b i{font-size:14px;font-style:normal;color:#9fb3d1;font-weight:600}
.gauge .gauge-in span{font-size:11px;color:#7dd3fc;letter-spacing:.12em}
.gauge .needle{position:absolute;left:50%;bottom:50%;width:2px;height:66px;background:linear-gradient(to top,#7dd3fc,transparent);transform-origin:bottom center;transform:translateX(-50%) rotate(-26deg);z-index:3;transition:transform .8s cubic-bezier(.2,.8,.2,1)}
.gauge .needle::after{content:"";position:absolute;left:50%;bottom:-5px;width:10px;height:10px;border-radius:50%;background:#7dd3fc;transform:translateX(-50%)}
.demo:has(.demo-toggle:checked) .gauge .needle{transform:translateX(-50%) rotate(38deg)}
.demo:has(.demo-toggle:checked) .gauge{filter:saturate(1.3) brightness(1.08)}
.demo-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.demo-metric{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:9px 8px;text-align:center}
.demo-metric span{display:block;font-size:10px;color:#8ea6c8;letter-spacing:.04em}
.demo-metric b{font-size:17px;color:#eaf4ff;font-weight:800}
.demo-metric b small{font-size:9px;color:#8ea6c8;font-weight:600}
.node-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.node-row input{display:none}
.node-row label{font-size:11px;color:#a9bdd9;border:1px solid rgba(255,255,255,.14);padding:5px 9px;border-radius:8px;cursor:pointer;transition:.2s}
.node-row input:checked+label{background:rgba(6,182,212,.16);border-color:rgba(6,182,212,.5);color:#7ff0ff}
.demo-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:11px;color:#8ea6c8}
.demo-foot b{color:#eaf4ff}
.demo-connect{display:block;text-align:center;padding:11px;border-radius:10px;background:linear-gradient(120deg,#2563eb,#06b6d4);color:#fff;font-weight:700;font-size:14px;cursor:pointer;margin-top:12px}
.demo-connect::after{content:"立即连接"}
.demo:has(.demo-toggle:checked) .demo-connect{background:rgba(244,63,94,.16);border:1px solid rgba(251,113,133,.45);color:#fecdd3}
.demo:has(.demo-toggle:checked) .demo-connect::after{content:"断开连接"}
.demo-state .off{display:none}
.demo:has(.demo-toggle:checked) .demo-state .on{display:none}
.demo:has(.demo-toggle:checked) .demo-state .off{display:inline}
.demo:has(.demo-toggle:checked) .demo-state b{color:#fbbf24}
.demo:has(.demo-toggle:checked) .demo-state b::before{background:#fbbf24;box-shadow:0 0 0 4px rgba(251,191,36,.18)}
.trust{background:#0c1428;border-top:1px solid rgba(255,255,255,.06);padding:20px 0}
.trust .container{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.trust span{color:#8ea6c8;font-size:13px}
.trust ul{display:flex;flex-wrap:wrap;gap:26px;color:#c8d7ee;font-weight:700;font-size:14px}
.trust li{display:flex;align-items:center;gap:7px}
.trust li::before{content:"";width:6px;height:6px;border-radius:50%;background:#22d3ee}
.stats-band{background:#fff;border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding:38px 0}
.stat-item{text-align:center;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:none}
.stat-item b{display:block;font-size:34px;font-weight:800;background:linear-gradient(120deg,#2563eb,#06b6d4);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.25}
.stat-item span{font-size:13px;color:var(--muted)}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow2);border-color:#cfe0f8}
.feature-card{padding:26px}
.feature-card .ico{width:50px;height:50px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:23px;background:linear-gradient(135deg,rgba(37,99,235,.12),rgba(6,182,212,.14));margin-bottom:16px;border:1px solid rgba(37,99,235,.12)}
.feature-card h3{font-size:18px;margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--muted);margin:0}
.feature-card .mini{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.feature-card .mini span{font-size:11px;color:#2563eb;background:#eef5ff;border-radius:999px;padding:3px 9px;font-weight:600}
.node-panel{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.node-list{display:grid;gap:14px}
.node-item{display:flex;align-items:center;gap:14px;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
.node-item .flag{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:20px;background:#f1f6ff;border:1px solid #e0ecff}
.node-item h4{margin:0;font-size:15px}
.node-item p{margin:2px 0 0;font-size:12px;color:var(--muted)}
.node-item .ping{margin-left:auto;text-align:right}
.node-item .ping b{display:block;font-size:18px;color:#0f9d6f;font-weight:800;line-height:1.2}
.node-item .ping span{font-size:10px;color:var(--muted);letter-spacing:.08em}
.node-item .bar{width:82px;height:6px;border-radius:6px;background:#eef2f9;overflow:hidden;margin-left:12px}
.node-item .bar i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,#06b6d4,#2563eb)}
.node-chart{background:linear-gradient(160deg,#0d1730,#0a1124);border-radius:20px;padding:26px;color:#fff;box-shadow:0 24px 50px rgba(11,25,55,.28)}
.node-chart h3{color:#fff;font-size:17px;margin-bottom:4px}
.node-chart .sub{font-size:12px;color:#8ea6c8;margin-bottom:22px}
.chart-bars{display:flex;align-items:flex-end;gap:10px;height:190px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.1)}
.chart-bars div{flex:1;border-radius:7px 7px 0 0;background:linear-gradient(to top,#2563eb,#22d3ee);position:relative;min-height:14px}
.chart-bars div span{position:absolute;bottom:-22px;left:50%;transform:translateX(-50%);font-size:10px;color:#8ea6c8;white-space:nowrap}
.node-chart .legend{display:flex;justify-content:space-between;font-size:11px;color:#8ea6c8;margin-top:34px}
.node-chart .legend b{color:#7ff0ff}
.scenario-card{padding:24px;position:relative;overflow:hidden}
.scenario-card .num{position:absolute;right:18px;top:14px;font-size:34px;font-weight:800;color:#eef4ff;line-height:1}
.scenario-card h3{font-size:17px;margin-bottom:8px;position:relative}
.scenario-card p{font-size:14px;color:var(--muted);margin:0;position:relative}
.scenario-card .tagline{display:inline-block;margin-top:12px;font-size:12px;color:#0f9d6f;background:#ecfdf5;border-radius:6px;padding:3px 8px;font-weight:600}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step-card{position:relative;padding:28px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.step-card::before{counter-increment:step;content:"0" counter(step);font-size:15px;font-weight:800;color:#2563eb;background:#eef5ff;border-radius:999px;padding:5px 12px;display:inline-block;margin-bottom:14px}
.step-card h3{font-size:17px}
.step-card p{font-size:14px;color:var(--muted);margin:0}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{padding:30px 26px;border-radius:20px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);position:relative;display:flex;flex-direction:column}
.price-card.popular{border:2px solid transparent;background:linear-gradient(#fff,#fff) padding-box,linear-gradient(135deg,#2563eb,#06b6d4) border-box;box-shadow:0 24px 50px rgba(37,99,235,.16);transform:translateY(-8px)}
.price-card .badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:linear-gradient(120deg,#2563eb,#06b6d4);color:#fff;font-size:12px;font-weight:700;padding:5px 14px;border-radius:999px;white-space:nowrap}
.price-card h3{font-size:18px;margin-bottom:4px}
.price-card .desc{font-size:13px;color:var(--muted);margin-bottom:18px}
.price{display:flex;align-items:baseline;gap:6px;margin-bottom:20px}
.price b{font-size:40px;font-weight:800;line-height:1;color:var(--ink)}
.price span{font-size:13px;color:var(--muted)}
.price-card ul{display:grid;gap:10px;margin-bottom:24px;font-size:14px;color:#344256}
.price-card li{display:flex;gap:9px;align-items:flex-start}
.price-card li::before{content:"✓";color:#0f9d6f;font-weight:800;flex:none}
.price-card .btn{margin-top:auto}
.faq-list{max-width:880px;margin:0 auto;display:grid;gap:12px}
details.faq{background:#fff;border:1px solid var(--line);border-radius:14px;padding:4px 22px;box-shadow:var(--shadow);transition:border-color .2s ease}
details.faq[open]{border-color:#bcd6fb}
details.faq summary{list-style:none;cursor:pointer;padding:18px 34px 18px 0;font-weight:700;font-size:16px;position:relative}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:22px;font-weight:400;color:var(--brand);transition:transform .2s ease}
details.faq[open] summary::after{content:"−"}
details.faq .a{padding:0 0 18px;color:var(--muted);font-size:14.5px;border-top:1px dashed var(--line);padding-top:14px}
details.faq .a p:last-child{margin-bottom:0}
.quote-card{padding:26px;display:flex;flex-direction:column;gap:14px}
.stars{color:#f59e0b;letter-spacing:2px;font-size:14px}
.quote-card p{font-size:14.5px;color:#354358;margin:0}
.quote-person{display:flex;align-items:center;gap:11px;margin-top:auto}
.quote-person .avt{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,#2563eb,#06b6d4);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.quote-person b{display:block;font-size:14px}
.quote-person span{font-size:12px;color:var(--muted)}
.news-card{overflow:hidden;display:flex;flex-direction:column}
.news-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#e8eef8}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .thumb img{transform:scale(1.06)}
.news-card .thumb .cat{position:absolute;left:12px;top:12px;background:rgba(10,17,36,.78);color:#fff;font-size:11px;padding:4px 9px;border-radius:6px;backdrop-filter:blur(4px)}
.news-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:9px;flex:1}
.news-card .date{font-size:12px;color:var(--muted)}
.news-card h3{font-size:17px;margin:0;line-height:1.5}
.news-card h3 a{color:var(--ink)}
.news-card h3 a:hover{color:var(--brand)}
.news-card p{font-size:13.5px;color:var(--muted);margin:0}
.news-card .more{margin-top:auto;font-size:13px;font-weight:700;color:var(--brand)}
.cta-band{position:relative;overflow:hidden;background:linear-gradient(120deg,#0b1631 0%,#132a55 55%,#0d3b53 100%);color:#fff;border-radius:24px;padding:56px 48px;text-align:center;box-shadow:0 30px 60px rgba(10,25,55,.24)}
.cta-band::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(6,182,212,.3),transparent 68%);right:-100px;top:-140px}
.cta-band h2{color:#fff;position:relative}
.cta-band p{color:#bcd0ea;position:relative;margin-bottom:26px}
.cta-band .btn{position:relative}
footer.site-footer{background:#080e1e;color:#9fb3d1;padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:13.5px;color:#8ea6c8;max-width:320px}
.footer-col h4{color:#fff;font-size:14px;letter-spacing:.06em;margin-bottom:14px}
.footer-col ul{display:grid;gap:9px}
.footer-col a{color:#9fb3d1;font-size:13.5px}
.footer-col a:hover{color:#7dd3fc}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;padding-top:22px;font-size:12.5px;color:#7c8ea8}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:#9fb3d1}
.trust-badges{display:flex;gap:14px;flex-wrap:wrap;margin-top:16px}
.trust-badges span{font-size:11px;border:1px solid rgba(255,255,255,.14);border-radius:6px;padding:4px 9px;color:#a7bcd6}
.scroll-top{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:0 10px 24px rgba(15,35,70,.16);display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:18px;z-index:900;opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s}
.scroll-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.page-hero{position:relative;padding:142px 0 64px;background:radial-gradient(900px 420px at 85% 0%,rgba(37,99,235,.32),transparent 60%),linear-gradient(150deg,#081020,#0d1a38);color:#fff}
.page-hero h1{color:#fff;font-size:clamp(28px,3.6vw,44px);margin-bottom:12px}
.page-hero p{color:#b9cbe6;max-width:680px;margin:0}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:12.5px;color:#9fb3d1;margin-bottom:16px}
.breadcrumb a{color:#bfd4ef}
.breadcrumb span{color:#7c93b4}
.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:34px;align-items:start;padding:52px 0 84px}
.article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:40px 44px;box-shadow:var(--shadow);min-width:0}
.article .meta{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--muted);padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:24px}
.article .meta b{color:var(--brand);font-weight:600}
.article h1{font-size:clamp(26px,3vw,36px);margin-bottom:14px}
.article h2{font-size:24px;margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--brand);line-height:1.45}
.article h3{font-size:18px;margin-top:22px}
.article p{font-size:15.8px;color:#2c394e;line-height:1.95;margin-bottom:18px}
.article figure{margin:26px 0}
.article figure img{width:100%;border-radius:14px;box-shadow:0 10px 26px rgba(15,35,70,.1)}
.article figcaption{font-size:12.5px;color:var(--muted);text-align:center;margin-top:8px}
.article blockquote{margin:24px 0;padding:18px 22px;background:#f3f8ff;border-left:4px solid var(--brand);border-radius:0 12px 12px 0;color:#30405a}
.article blockquote p{margin:0;font-size:15px}
.article blockquote cite{display:block;margin-top:8px;font-size:12.5px;color:var(--muted);font-style:normal}
.article .key-points{background:#f7fbff;border:1px dashed #cfe3ff;border-radius:14px;padding:20px 24px;margin:24px 0}
.article .key-points h3{margin:0 0 10px;font-size:15px;color:var(--brand)}
.article .key-points li{font-size:14px;color:#344256;padding-left:20px;position:relative;margin-bottom:7px}
.article .key-points li::before{content:"▸";position:absolute;left:0;color:var(--brand)}
.article .post-nav{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:32px;padding-top:22px;border-top:1px solid var(--line);font-size:13.5px}
.article .post-nav a{font-weight:600}
.comments{margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.comments h2{font-size:20px;border-left:none;padding-left:0;margin:0 0 18px}
.comment{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line)}
.comment:last-child{border-bottom:none}
.comment .avt{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#2563eb,#06b6d4);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex:none;font-size:14px}
.comment .c-body b{font-size:14px}
.comment .c-body time{font-size:12px;color:var(--muted);margin-left:8px}
.comment .c-body p{margin:4px 0 0;font-size:14px;color:#3d4b60}
.sidebar{position:sticky;top:88px;display:grid;gap:18px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow)}
.side-card h3{font-size:15px;margin:0 0 16px;padding-left:10px;border-left:3px solid var(--brand);line-height:1.3}
.toc{position:relative;padding-left:18px}
.toc::before{content:"";position:absolute;left:4px;top:4px;bottom:4px;width:2px;background:#e6eef9}
.toc a{display:block;position:relative;font-size:13.5px;color:#4a5a72;padding:7px 0;line-height:1.5}
.toc a::before{content:"";position:absolute;left:-18px;top:14px;width:8px;height:8px;border-radius:50%;background:#c7d8ee;border:2px solid #fff;box-shadow:0 0 0 1px #c7d8ee}
.toc a.active{color:var(--brand);font-weight:700}
.toc a.active::before{background:var(--brand);box-shadow:0 0 0 1px var(--brand)}
.hot-list{display:grid;gap:12px;counter-reset:hot}
.hot-list li{display:flex;gap:11px;align-items:flex-start;font-size:13.5px;line-height:1.5}
.hot-list .rk{flex:none;width:22px;height:22px;border-radius:6px;background:#eef2f8;color:#6b7c93;font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center;transition:.2s}
.hot-list li:nth-child(1) .rk{background:linear-gradient(135deg,#2563eb,#06b6d4);color:#fff}
.hot-list li:nth-child(2) .rk{background:linear-gradient(135deg,#f97316,#fbbf24);color:#fff}
.hot-list li:nth-child(3) .rk{background:linear-gradient(135deg,#d4a017,#f3d47a);color:#fff}
.hot-list li:hover .rk{transform:scale(1.12)}
.hot-list a{color:#3b4a60}
.hot-list a:hover{color:var(--brand)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{font-size:12px;color:#4a5a72;border:1px solid var(--line);border-radius:999px;padding:5px 11px;transition:.2s}
.tag-cloud a:hover{color:var(--brand);border-color:var(--brand);background:#f2f7ff}
.news-hero-list{display:grid;gap:22px}
.news-row{display:grid;grid-template-columns:300px 1fr;gap:0;overflow:hidden}
.news-row .thumb{position:relative;min-height:190px;overflow:hidden}
.news-row .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-row:hover .thumb img{transform:scale(1.05)}
.news-row .body{padding:26px 28px;display:flex;flex-direction:column;gap:9px}
.news-row .date{font-size:12px;color:var(--muted)}
.news-row h2{font-size:20px;margin:0;line-height:1.5}
.news-row h2 a{color:var(--ink)}
.news-row h2 a:hover{color:var(--brand)}
.news-row p{font-size:14px;color:var(--muted);margin:0}
.news-row .more{margin-top:auto;font-size:13px;font-weight:700}
.dl-hero{padding-top:128px}
.dl-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}.dl-hero .hero-actions{margin-bottom:0}
.dl-meta{display:flex;flex-wrap:wrap;gap:22px;margin:18px 0 24px;color:#b9cbe6;font-size:13px}
.dl-meta b{display:block;color:#fff;font-size:16px}
.version-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.version-card{padding:26px;display:flex;flex-direction:column;gap:8px}
.version-card .vtag{display:inline-block;align-self:flex-start;font-size:11px;font-weight:700;color:#0f9d6f;background:#ecfdf5;padding:4px 10px;border-radius:999px;margin-bottom:4px}
.version-card h3{font-size:18px;margin:0}
.version-card .vmeta{font-size:12.5px;color:var(--muted);margin-bottom:10px}
.version-card ul{display:grid;gap:9px;font-size:13.5px;color:#3d4b60;margin-bottom:20px}
.version-card li{padding-left:18px;position:relative}
.version-card li::before{content:"·";position:absolute;left:4px;color:var(--brand);font-weight:800}
.version-card .btn{margin-top:auto}
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.req{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;display:flex;gap:14px;align-items:flex-start;box-shadow:var(--shadow)}
.req .ico{font-size:20px;width:42px;height:42px;border-radius:10px;background:#f1f6ff;display:flex;align-items:center;justify-content:center;flex:none}
.req b{display:block;font-size:14px;margin-bottom:3px}
.req span{font-size:13px;color:var(--muted)}
.install-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.install-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow);position:relative}
.install-card .n{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#2563eb,#06b6d4);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:12px}
.install-card h3{font-size:16px}
.install-card p{font-size:13.5px;color:var(--muted);margin:0}
.policy{max-width:900px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:20px;padding:44px 48px;box-shadow:var(--shadow)}
.policy h1{font-size:32px;margin-bottom:8px}
.policy .updated{font-size:13px;color:var(--muted);margin-bottom:26px}
.policy h2{font-size:20px;margin:30px 0 10px}
.policy p,.policy li{font-size:14.8px;color:#37455a}
.policy ul{margin:0 0 16px}
.policy ul li{padding-left:18px;position:relative;margin-bottom:6px}
.policy ul li::before{content:"•";position:absolute;left:2px;color:var(--brand)}
.map-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.map-col{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow)}
.map-col h2{font-size:17px;margin-bottom:14px}
.map-col ul{display:grid;gap:9px}
.map-col li{font-size:14px;color:#3d4b60;display:flex;gap:8px}
.map-col li::before{content:"›";color:var(--brand);font-weight:800}
.map-col a{color:#3d4b60}
.map-col a:hover{color:var(--brand)}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}
.about-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:var(--shadow)}
.about-card h3{font-size:17px;margin-bottom:10px}
.about-card p{font-size:14px;color:var(--muted);margin-bottom:0}
.error-wrap{padding:170px 0 110px;text-align:center;background:radial-gradient(700px 340px at 50% 0%,rgba(37,99,235,.18),transparent 70%),linear-gradient(150deg,#081020,#0d1a38);color:#fff;min-height:70vh}
.error-wrap .code{font-size:clamp(80px,14vw,150px);font-weight:800;line-height:1;background:linear-gradient(120deg,#60a5fa,#22d3ee);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-.03em}
.error-wrap h1{color:#fff;font-size:28px;margin:10px 0 12px}
.error-wrap p{color:#b9cbe6;margin-bottom:26px}
.error-wrap .hint{font-size:13px;color:#8ea6c8;margin-top:18px}
.inline-note{font-size:12.5px;color:var(--muted);margin-top:10px}
.updated-badge{display:inline-flex;gap:7px;align-items:center;font-size:12px;color:var(--muted)}
.notice{background:#fff8ed;border:1px solid #fde3c0;border-radius:12px;padding:14px 18px;font-size:13.5px;color:#8a5a1b;margin:18px 0}
html.js .reveal{opacity:0;transform:translateY(26px)}
html.js .reveal.in{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}html.js .reveal{opacity:1;transform:none}.gauge .needle{transition:none}}
@media (max-width:992px){
header.site-header{padding:10px 0}
.hamburger{display:flex}
.nav-menu{position:fixed;top:64px;left:0;right:0;background:rgba(8,14,30,.985);backdrop-filter:blur(12px);flex-direction:column;align-items:stretch;gap:2px;padding:14px 18px 26px;max-height:calc(100vh - 64px);overflow-y:auto;display:none;border-top:1px solid rgba(255,255,255,.08)}
.nav-toggle:checked~.nav-menu{display:flex}
.nav-menu>li>a,.sub-head{justify-content:space-between;padding:13px 10px;font-size:15.5px;border-radius:10px}
.submenu{position:static;opacity:1;visibility:visible;transform:none;display:none;background:rgba(255,255,255,.05);box-shadow:none;padding:4px 10px 8px;min-width:0;border-radius:10px;margin-bottom:6px}
.sub-toggle:checked~.submenu{display:block}
.submenu a{color:#c8d7ee}
.submenu a:hover{background:rgba(255,255,255,.1);color:#fff}
.nav-cta{text-align:center;margin-top:10px}
.hero{padding:126px 0 72px}
.hero-grid,.node-panel,.dl-grid,.about-grid{grid-template-columns:1fr}
.hero .lead{max-width:none}
.hero-stats{max-width:none}
.demo-card{max-width:460px;margin:0 auto;width:100%}
.stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
.stat-item:nth-child(2){border-right:none}
.grid-4{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(2,1fr)}
.price-grid{grid-template-columns:1fr;max-width:520px;margin:0 auto}
.price-card.popular{transform:none}
.version-grid{grid-template-columns:1fr;max-width:540px;margin:0 auto}
.req-grid{grid-template-columns:repeat(2,1fr)}
.install-grid{grid-template-columns:repeat(2,1fr)}
.article-wrap{grid-template-columns:1fr;padding:36px 0 64px}
.article{padding:30px 26px}
.sidebar{position:static;grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr;gap:28px}
.footer-brand{grid-column:1/-1}
.news-row{grid-template-columns:1fr}
.news-row .thumb{aspect-ratio:16/9;min-height:0}
.cta-band{padding:44px 28px}
.map-grid{grid-template-columns:repeat(2,1fr)}
.policy{padding:34px 28px}
.trust ul{gap:16px}
}
@media (max-width:768px){
.section{padding:60px 0}
.hero{padding:112px 0 56px}
.hero-stats{grid-template-columns:1fr 1fr}
.hero-actions .btn{flex:1 1 100%}
.grid-3,.grid-4{grid-template-columns:1fr}
.steps{grid-template-columns:1fr}
.req-grid{grid-template-columns:1fr}
.install-grid{grid-template-columns:1fr 1fr}
.stats-grid{grid-template-columns:1fr 1fr;padding:28px 0}
.stat-item{border-right:none}
.article h2{font-size:21px}
.footer-grid{grid-template-columns:1fr 1fr}
.footer-brand{grid-column:1/-1}
.map-grid{grid-template-columns:1fr}
.course-card img{height:auto}
.demo-card{padding:14px}
.gauge{width:180px;height:180px}
.cta-band{border-radius:18px;padding:36px 20px}
.page-hero{padding:122px 0 48px}
.error-wrap{padding:140px 0 80px}
}
@media (max-width:480px){
.container{padding:0 16px}
h1{font-size:29px}
.hero-stats{grid-template-columns:1fr}
.hero-stat b{font-size:23px}
.stats-grid{grid-template-columns:1fr}
.stat-item{padding:8px 0}
.demo-metrics{gap:6px}
.demo-metric b{font-size:15px}
.news-row .body{padding:20px}
.article{padding:24px 18px;border-radius:14px}
.article p{font-size:15px}
.article-wrap{padding:26px 0 52px}
.btn{width:100%}
.hero-actions{gap:10px}
.hero-note{gap:12px;font-size:12px}
.price-card{padding:26px 20px}
.install-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;align-items:flex-start}
.cta-band{padding:32px 18px}
}