*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#0f1b33;background:#f6f9ff;line-height:1.7;font-size:15px}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.site-nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,box-shadow .3s;background:rgba(10,20,40,.25)}
.site-nav.scrolled{background:rgba(8,15,34,.92);box-shadow:0 8px 24px rgba(8,15,34,.25);backdrop-filter:blur(12px)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 20px;height:68px;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:19px;flex:none}
.brand img{height:34px;width:34px;border-radius:8px}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-item{position:relative}
.nav-item>a{display:flex;align-items:center;gap:6px;padding:10px 14px;color:#e8efff;font-size:14.5px;border-radius:8px;transition:.25s;cursor:pointer}
.nav-item>a:hover{color:#fff;background:rgba(255,255,255,.12)}
.nav-item>a .arr{transition:transform .3s;font-size:10px}
.nav-item:hover>a .arr{transform:rotate(180deg)}
.dropdown{position:absolute;top:100%;left:0;min-width:180px;background:#fff;border-radius:12px;box-shadow:0 16px 40px rgba(15,27,51,.16);padding:8px;opacity:0;visibility:hidden;transform:translateY(10px);transition:.28s}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:10px 14px;color:#33415f;border-radius:8px;font-size:14px;transition:.2s}
.dropdown a:hover{color:#2e5bff;background:#eef4ff}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:.25s;line-height:1.2}
.btn-primary{background:linear-gradient(135deg,#2e5bff,#00c6ff);color:#fff;box-shadow:0 10px 24px rgba(46,91,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(46,91,255,.45);color:#fff}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.25);color:#fff}
.btn-outline{background:#fff;color:#2e5bff;border:1.5px solid #2e5bff}
.btn-outline:hover{background:#eef4ff;color:#2e5bff}
.btn-sm{padding:9px 18px;font-size:14px}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none}
.hamburger span{width:24px;height:2.5px;background:#fff;border-radius:2px;transition:.3s}
.hamburger.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.hero{position:relative;padding:150px 0 90px;background:radial-gradient(1200px 600px at 80% -10%,rgba(0,198,255,.35),transparent 60%),radial-gradient(900px 500px at 10% 110%,rgba(46,91,255,.4),transparent 60%),linear-gradient(160deg,#071033,#0a1a4a 55%,#0c2260);color:#fff;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;background:rgba(0,198,255,.14);border:1px solid rgba(0,198,255,.4);color:#7fd8ff;font-size:13px;margin-bottom:22px}
.hero h1{font-size:46px;line-height:1.25;font-weight:800;margin-bottom:18px}
.hero h1 .grad{background:linear-gradient(90deg,#4facff,#00e5ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:#c4d2f2;margin-bottom:30px;max-width:520px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:38px}
.hero-data{display:flex;gap:34px;flex-wrap:wrap}
.hero-data .hd b{display:block;font-size:28px;font-weight:800;background:linear-gradient(90deg,#fff,#9fd4ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-data .hd span{font-size:13px;color:#9db2e0}
.demo-wrap{position:relative;z-index:2}
.demo-card{background:rgba(10,20,48,.72);border:1px solid rgba(120,160,255,.28);border-radius:20px;padding:22px;backdrop-filter:blur(14px);box-shadow:0 30px 60px rgba(0,10,40,.5)}
.demo-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.demo-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px}
.demo-brand img{width:28px;height:28px;border-radius:6px}
.demo-status{font-size:12.5px;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.1);color:#9db2e0;transition:.3s}
.demo-status.on{background:rgba(22,199,154,.18);color:#3ee6b4}
.demo-body{display:flex;gap:18px;align-items:center;margin-bottom:16px}
.ring{position:relative;width:150px;height:150px;flex:none}
.ring svg{transform:rotate(-90deg);width:150px;height:150px}
.ring .track{fill:none;stroke:rgba(255,255,255,.12);stroke-width:10}
.ring .bar{fill:none;stroke:url(#gradRing);stroke-width:10;stroke-linecap:round;stroke-dasharray:402;stroke-dashoffset:402;transition:stroke-dashoffset 1.1s cubic-bezier(.4,0,.2,1)}
.ring-center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.ring-center b{font-size:28px;font-weight:800;font-variant-numeric:tabular-nums}
.ring-center span{font-size:12px;color:#9db2e0}
.demo-metrics{flex:1;display:flex;flex-direction:column;gap:10px}
.metric{display:flex;justify-content:space-between;align-items:center;background:rgba(255,255,255,.06);border-radius:10px;padding:9px 14px}
.metric span{font-size:13px;color:#9db2e0}
.metric b{font-size:15px;color:#fff;font-variant-numeric:tabular-nums}
.demo-nodes{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.node-chip{padding:7px 14px;border-radius:999px;font-size:12.5px;background:rgba(255,255,255,.08);color:#b9c8ee;cursor:pointer;transition:.2s;border:1px solid transparent}
.node-chip:hover{border-color:rgba(0,198,255,.5);color:#fff}
.node-chip.active{background:linear-gradient(135deg,#2e5bff,#00c6ff);color:#fff;box-shadow:0 6px 16px rgba(46,91,255,.4)}
.demo-connect{width:100%;padding:14px;border:none;border-radius:14px;font-size:16px;font-weight:700;color:#fff;background:linear-gradient(135deg,#2e5bff,#00c6ff);cursor:pointer;transition:.25s}
.demo-connect:hover{filter:brightness(1.1);transform:translateY(-1px)}
.demo-connect.connected{background:linear-gradient(135deg,#ff5c7c,#ff9f1c)}
.section{padding:88px 0}
.section.alt{background:#fff}
.sec-head{text-align:center;max-width:680px;margin:0 auto 52px}
.sec-tag{display:inline-block;padding:6px 16px;border-radius:999px;background:#eef4ff;color:#2e5bff;font-size:13px;font-weight:600;margin-bottom:14px}
.sec-head h2{font-size:32px;font-weight:800;margin-bottom:12px}
.sec-head p{color:#5b6b8c;font-size:15.5px}
.node-bar{background:linear-gradient(90deg,#0a1a4a,#12307e);border-radius:20px;padding:34px 30px;color:#fff;display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center}
.node-bar .nb-title b{display:block;font-size:24px}
.node-bar .nb-title span{font-size:13px;color:#9db2e0}
.city-list{display:flex;flex-wrap:wrap;gap:10px}
.city-chip{display:flex;flex-direction:column;align-items:center;padding:10px 18px;border-radius:14px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);transition:.25s}
.city-chip:hover{transform:translateY(-3px);border-color:#00c6ff}
.city-chip b{font-size:15px}
.city-chip span{font-size:12px;color:#3ee6b4}
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{background:#fff;border:1px solid #e4ebf7;border-radius:16px;padding:26px;text-align:center;transition:.25s}
.stat-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(15,27,51,.1)}
.stat-card b{display:block;font-size:30px;font-weight:800;background:linear-gradient(90deg,#2e5bff,#00c6ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-card span{font-size:13.5px;color:#5b6b8c}
.proto-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.proto-card{background:#fff;border:1px solid #e4ebf7;border-radius:16px;padding:28px;transition:.25s}
.proto-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(15,27,51,.1)}
.proto-ico{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,#2e5bff,#00c6ff);display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;margin-bottom:16px}
.proto-card h3{font-size:18px;margin-bottom:8px}
.proto-card p{font-size:14px;color:#5b6b8c}
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.feat-card{background:#fff;border:1px solid #e4ebf7;border-radius:16px;padding:26px 22px;transition:.25s}
.feat-card:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(46,91,255,.12);border-color:#bcd0ff}
.feat-ico{width:46px;height:46px;border-radius:12px;background:#eef4ff;color:#2e5bff;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:14px}
.feat-card h3{font-size:16.5px;margin-bottom:8px}
.feat-card p{font-size:13.5px;color:#5b6b8c}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scene-card{position:relative;border-radius:16px;overflow:hidden;background:#fff;border:1px solid #e4ebf7;padding:26px;transition:.25s}
.scene-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#2e5bff,#00c6ff);opacity:0;transition:.25s}
.scene-card:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(15,27,51,.1)}
.scene-card:hover::before{opacity:1}
.scene-ico{width:46px;height:46px;border-radius:12px;background:#eef4ff;color:#2e5bff;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:14px}
.scene-card h3{font-size:17px;margin-bottom:8px}
.scene-card p{font-size:13.5px;color:#5b6b8c}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step-card{background:#fff;border:1px solid #e4ebf7;border-radius:16px;padding:30px 26px;text-align:center;transition:.25s}
.step-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(15,27,51,.08)}
.step-num{width:52px;height:52px;margin:0 auto 16px;border-radius:50%;background:linear-gradient(135deg,#2e5bff,#00c6ff);color:#fff;font-size:22px;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 22px rgba(46,91,255,.35)}
.step-card h3{font-size:17px;margin-bottom:8px}
.step-card p{font-size:13.5px;color:#5b6b8c}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{position:relative;background:#fff;border:1px solid #e4ebf7;border-radius:20px;padding:34px 30px;text-align:center;transition:.25s;display:flex;flex-direction:column}
.price-card:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(15,27,51,.12)}
.price-card.popular{border:2px solid #2e5bff;transform:scale(1.04);box-shadow:0 24px 54px rgba(46,91,255,.18)}
.price-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,#ff9f1c,#ff5c7c);color:#fff;font-size:12.5px;font-weight:700;padding:6px 18px;border-radius:999px;white-space:nowrap}
.price-name{font-size:16px;font-weight:700;color:#5b6b8c;margin-bottom:10px}
.price-num{font-size:44px;font-weight:800;margin-bottom:4px}
.price-num small{font-size:15px;font-weight:500;color:#5b6b8c}
.price-note{font-size:13px;color:#9aa7c4;margin-bottom:22px}
.price-list{text-align:left;margin-bottom:26px;flex:1}
.price-list li{display:flex;gap:9px;font-size:14px;color:#3b4a6b;padding:7px 0}
.price-list li::before{content:"✓";color:#16c79a;font-weight:700}
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid #e4ebf7;border-radius:14px;margin-bottom:14px;overflow:hidden;transition:.2s}
.faq-item.open{border-color:#bcd0ff;box-shadow:0 10px 24px rgba(46,91,255,.08)}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:18px 22px;cursor:pointer;font-weight:600;font-size:15.5px}
.faq-q .plus{flex:none;width:26px;height:26px;border-radius:50%;background:#eef4ff;color:#2e5bff;display:flex;align-items:center;justify-content:center;font-size:16px;transition:.3s}
.faq-item.open .plus{transform:rotate(45deg);background:linear-gradient(135deg,#2e5bff,#00c6ff);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 22px 20px;color:#5b6b8c;font-size:14px}
.faq-a ol{margin:10px 0 0 20px}
.faq-a ol li{padding:3px 0}
.testi-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.testi-card{background:#fff;border:1px solid #e4ebf7;border-radius:16px;padding:26px;transition:.25s}
.testi-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(15,27,51,.08)}
.testi-stars{color:#ffb400;letter-spacing:2px;margin-bottom:12px;font-size:14px}
.testi-text{font-size:14.5px;color:#3b4a6b;margin-bottom:18px}
.testi-user{display:flex;align-items:center;gap:12px}
.testi-ava{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#2e5bff,#00c6ff);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px}
.testi-user b{display:block;font-size:14.5px}
.testi-user span{font-size:12.5px;color:#9aa7c4}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid #e4ebf7;border-radius:16px;overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(15,27,51,.12)}
.news-card img{aspect-ratio:16/9;object-fit:cover}
.news-card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-date{font-size:12.5px;color:#9aa7c4;margin-bottom:8px}
.news-card h3{font-size:16px;line-height:1.5;margin-bottom:10px}
.news-card h3 a:hover{color:#2e5bff}
.news-card p{font-size:13.5px;color:#5b6b8c;flex:1;margin-bottom:14px}
.news-more{font-size:13.5px;color:#2e5bff;font-weight:600}
.cta{background:radial-gradient(800px 400px at 50% -20%,rgba(0,198,255,.4),transparent 60%),linear-gradient(135deg,#071033,#0d2a6b);border-radius:24px;color:#fff;text-align:center;padding:64px 30px}
.cta h2{font-size:32px;font-weight:800;margin-bottom:12px}
.cta p{color:#c4d2f2;margin-bottom:28px}
.footer{background:#08102a;color:#c6d2ef;padding:60px 0 0;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:36px;padding-bottom:40px}
.footer-brand p{font-size:13.5px;color:#8fa3d4;margin:14px 0;max-width:300px}
.footer h4{color:#fff;font-size:15.5px;margin-bottom:16px}
.footer-col a{display:block;font-size:13.5px;color:#9db2e0;padding:6px 0;transition:.2s}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:13px;color:#7e93c4}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:#9aa7c4;margin-bottom:16px;flex-wrap:wrap}
.breadcrumb a:hover{color:#2e5bff}
.breadcrumb .sep{color:#c3cfe8}
.page-hero{padding:130px 0 60px;background:radial-gradient(900px 400px at 80% -20%,rgba(0,198,255,.28),transparent 60%),linear-gradient(160deg,#071033,#0b2057);color:#fff;text-align:center}
.page-hero h1{font-size:38px;font-weight:800;margin-bottom:12px}
.page-hero p{color:#c4d2f2;max-width:640px;margin:0 auto}
.article-zone{padding:40px 0 80px}
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.article-main{background:#fff;border:1px solid #e4ebf7;border-radius:20px;padding:40px;min-width:0}
.article-main h1{font-size:28px;font-weight:800;line-height:1.4}
.article-meta{display:flex;align-items:center;gap:16px;color:#9aa7c4;font-size:13px;margin:16px 0 22px;flex-wrap:wrap}
.article-meta .chip{background:#eef4ff;color:#2e5bff;padding:3px 12px;border-radius:999px;font-size:12px}
.article-cover{border-radius:14px;margin-bottom:26px;aspect-ratio:16/9;object-fit:cover}
.article-main h2{font-size:22px;font-weight:800;margin:34px 0 14px;padding-left:14px;border-left:4px solid #2e5bff;scroll-margin-top:90px}
.article-main p{font-size:15.5px;color:#3b4a6b;margin-bottom:18px;text-align:justify}
.article-main blockquote{background:#eef4ff;border-radius:12px;padding:16px 20px;color:#2e5bff;font-weight:600;margin:20px 0;font-size:15px}
.article-img{border-radius:14px;margin:10px 0 26px;aspect-ratio:2/1;object-fit:cover}
.article-end{background:linear-gradient(135deg,#eef4ff,#e6fbff);border-radius:14px;padding:20px 22px;margin:30px 0;font-size:14.5px;color:#33415f}
.article-nav{display:flex;justify-content:space-between;gap:14px;margin:30px 0;flex-wrap:wrap}
.article-nav a{flex:1;min-width:200px;background:#fff;border:1px solid #e4ebf7;border-radius:12px;padding:14px 18px;font-size:13.5px;color:#3b4a6b;transition:.2s}
.article-nav a:hover{border-color:#2e5bff;color:#2e5bff}
.article-nav a small{display:block;color:#9aa7c4;margin-bottom:4px}
.article-nav a.next{text-align:right}
.side{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}
.side-card{background:#fff;border:1px solid #e4ebf7;border-radius:16px;padding:22px;box-shadow:0 10px 26px rgba(15,27,51,.06)}
.side-title{font-size:16px;font-weight:800;padding-left:12px;border-left:4px solid #2e5bff;margin-bottom:16px}
.toc-item{position:relative;display:block;padding:9px 0 9px 20px;font-size:13.5px;color:#5b6b8c;cursor:pointer;transition:.2s;border-left:2px solid #e4ebf7}
.toc-item::before{content:"";position:absolute;left:-5px;top:50%;transform:translateY(-50%);width:8px;height:8px;border-radius:50%;background:#c3cfe8;transition:.2s}
.toc-item:hover{color:#2e5bff}
.toc-item.active{color:#2e5bff;font-weight:700;border-left-color:#2e5bff}
.toc-item.active::before{background:#2e5bff}
.hot-item{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px dashed #e4ebf7}
.hot-item:last-child{border-bottom:none}
.hot-rank{flex:none;width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;color:#fff;background:#c3cfe8;transition:.2s}
.hot-rank.r1{background:linear-gradient(135deg,#2e5bff,#00c6ff)}
.hot-rank.r2{background:linear-gradient(135deg,#ff9f1c,#ffb400)}
.hot-rank.r3{background:linear-gradient(135deg,#ff8f5c,#ff5c7c)}
.hot-item a{font-size:13px;color:#3b4a6b;line-height:1.5;transition:.2s}
.hot-item:hover .hot-rank{transform:scale(1.12)}
.hot-item:hover a{color:#2e5bff}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-pill{font-size:12.5px;color:#5b6b8c;background:#f2f6ff;border:1px solid #e4ebf7;padding:6px 13px;border-radius:999px;transition:.2s}
.tag-pill:hover{color:#2e5bff;border-color:#2e5bff;background:#fff}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:16px}
.related-card{border:1px solid #e4ebf7;border-radius:12px;overflow:hidden;transition:.2s;background:#fff}
.related-card img{aspect-ratio:16/9;object-fit:cover}
.related-card span{display:block;padding:10px 12px;font-size:13px;color:#3b4a6b;line-height:1.5}
.related-card:hover{transform:translateY(-3px);border-color:#2e5bff}
.comments{margin-top:40px}
.comments h3{font-size:19px;font-weight:800;margin-bottom:10px}
.comment{display:flex;gap:14px;padding:18px 0;border-bottom:1px dashed #e4ebf7}
.comment:last-child{border-bottom:none}
.comment-ava{flex:none;width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px;background:linear-gradient(135deg,#2e5bff,#00c6ff)}
.comment-ava.c2{background:linear-gradient(135deg,#ff9f1c,#ff5c7c)}
.comment-ava.c3{background:linear-gradient(135deg,#16c79a,#00b8d9)}
.comment-head{display:flex;align-items:center;gap:10px;margin-bottom:6px;flex-wrap:wrap}
.comment-head b{font-size:14.5px}
.comment-head span{font-size:12px;color:#9aa7c4}
.comment p{font-size:14px;color:#3b4a6b}
.map-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.map-card{background:#fff;border:1px solid #e4ebf7;border-radius:16px;padding:24px}
.map-card h3{font-size:16px;margin-bottom:14px;padding-left:12px;border-left:4px solid #2e5bff}
.map-card a{display:block;font-size:14px;color:#5b6b8c;padding:7px 0;transition:.2s}
.map-card a:hover{color:#2e5bff;transform:translateX(3px)}
.err-wrap{padding:150px 0 90px;text-align:center}
.err-code{font-size:120px;font-weight:800;background:linear-gradient(135deg,#2e5bff,#00c6ff);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.err-wrap h2{font-size:26px;margin:16px 0 10px}
.err-wrap p{color:#5b6b8c;margin-bottom:26px}
.dl-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.ver-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.ver-card{background:#fff;border:1px solid #e4ebf7;border-radius:16px;padding:28px;transition:.25s;display:flex;flex-direction:column}
.ver-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(15,27,51,.1)}
.ver-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;gap:10px}
.ver-os{font-size:22px}
.ver-size{font-size:12.5px;color:#9aa7c4;background:#f2f6ff;padding:4px 12px;border-radius:999px;white-space:nowrap}
.ver-list{flex:1;margin-bottom:18px}
.ver-list li{font-size:13.5px;color:#5b6b8c;padding:6px 0;display:flex;gap:8px}
.ver-list li::before{content:"✓";color:#16c79a;font-weight:700}
.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sys-card{background:#fff;border:1px solid #e4ebf7;border-radius:14px;padding:20px;text-align:center;transition:.2s}
.sys-card:hover{transform:translateY(-3px);border-color:#bcd0ff}
.sys-card b{display:block;font-size:15px;margin-bottom:6px}
.sys-card span{font-size:13px;color:#5b6b8c}
.reveal{transition:opacity .6s ease,transform .6s ease}
.js .reveal{opacity:0;transform:translateY(26px)}
.js .reveal.in{opacity:1;transform:none}
@media (max-width:992px){
.hamburger{display:flex}
.nav-menu{position:fixed;top:68px;left:0;right:0;background:rgba(10,20,48,.96);backdrop-filter:blur(14px);flex-direction:column;align-items:stretch;padding:14px 20px 24px;gap:4px;transform:translateY(-12px);opacity:0;visibility:hidden;transition:.3s;max-height:calc(100vh - 68px);overflow:auto}
.nav-menu.open{transform:none;opacity:1;visibility:visible}
.nav-item>a{color:#e8efff;justify-content:space-between}
.nav-item.sub-open>a .arr{transform:rotate(180deg)}
.dropdown{position:static;opacity:1;visibility:visible;transform:none;background:rgba(255,255,255,.06);box-shadow:none;min-width:0;display:none;padding:6px 10px}
.nav-item.sub-open .dropdown{display:block}
.dropdown a{color:#bcd0f2;padding:10px 14px}
.dropdown a:hover{background:rgba(255,255,255,.1);color:#fff}
.hero{padding:120px 0 70px}
.hero-grid{grid-template-columns:1fr;gap:40px}
.hero h1{font-size:36px}
.feat-grid{grid-template-columns:repeat(2,1fr)}
.scene-grid{grid-template-columns:repeat(2,1fr)}
.proto-grid{grid-template-columns:1fr 1fr}
.steps-grid{grid-template-columns:1fr 1fr 1fr;gap:16px}
.price-grid{grid-template-columns:1fr;max-width:440px;margin:0 auto}
.price-card.popular{transform:none}
.news-grid{grid-template-columns:repeat(2,1fr)}
.stats-strip{grid-template-columns:repeat(2,1fr)}
.testi-grid{grid-template-columns:1fr}
.node-bar{grid-template-columns:1fr}
.article-layout{grid-template-columns:1fr}
.side{position:static}
.dl-grid{grid-template-columns:1fr;gap:36px}
.ver-grid{grid-template-columns:1fr 1fr}
.sys-grid{grid-template-columns:1fr 1fr}
.map-grid{grid-template-columns:1fr 1fr}
.related-grid{grid-template-columns:1fr 1fr 1fr}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
.hero h1{font-size:30px}
.hero-data{gap:20px}
.sec-head h2{font-size:26px}
.feat-grid{grid-template-columns:1fr 1fr;gap:14px}
.scene-grid{grid-template-columns:1fr}
.proto-grid{grid-template-columns:1fr}
.steps-grid{grid-template-columns:1fr;gap:14px}
.news-grid{grid-template-columns:1fr}
.stats-strip{grid-template-columns:1fr 1fr;gap:14px}
.ver-grid{grid-template-columns:1fr}
.sys-grid{grid-template-columns:1fr}
.map-grid{grid-template-columns:1fr}
.related-grid{grid-template-columns:1fr}
.article-main{padding:24px}
.demo-body{justify-content:center}
.section{padding:64px 0}
.cta{padding:48px 22px}
.footer-grid{grid-template-columns:1fr 1fr;gap:26px}
.page-hero h1{font-size:30px}
.err-code{font-size:90px}
}
@media (max-width:480px){
.container{padding:0 16px}
.hero h1{font-size:26px}
.hero-sub{font-size:15px}
.hero-btns .btn{width:100%}
.feat-grid{grid-template-columns:1fr}
.stats-strip{grid-template-columns:1fr}
.demo-body{flex-direction:column}
.ring{width:130px;height:130px}
.ring svg{width:130px;height:130px}
.footer-grid{grid-template-columns:1fr}
.article-main{padding:18px}
.article-main h1{font-size:22px}
.article-main h2{font-size:19px}
.price-num{font-size:36px}
.btn{padding:11px 20px}
.ver-grid{grid-template-columns:1fr}
.city-chip{padding:8px 14px}
}