:root{--blue:#1784ff;--cyan:#3be1ff;--violet:#675bff;--navy:#050f28;--navy2:#0a1f49;--ink:#13213b;--muted:#697791;--line:#dfe8f4;--soft:#f5f8fd;--radius:22px;--shadow:0 24px 65px rgba(18,55,108,.15)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;line-height:1.68;background:#fff}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}
.header{position:sticky;top:0;z-index:100;height:70px;color:#fff;background:rgba(4,14,36,.9);border-bottom:1px solid rgba(255,255,255,.1);backdrop-filter:blur(16px)}.nav{height:100%;display:flex;align-items:center;gap:34px}.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:900}.brand-mark{width:38px;height:38px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--cyan),var(--blue),var(--violet));border-radius:13px 13px 13px 4px;box-shadow:0 0 24px rgba(59,225,255,.3)}.nav-links{display:flex;gap:27px;margin-left:auto;color:#b7c8e0;font-size:14px}.nav-links a:hover,.nav-links .active{color:#fff}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border:1px solid transparent;border-radius:12px;font-weight:800;transition:.2s}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--blue),#5b61ff);box-shadow:0 10px 25px rgba(23,132,255,.3)}.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08)}.btn-outline{color:var(--blue);background:#fff;border-color:#bbd8fb}.btn-white{color:var(--blue);background:#fff}.btn-ghost{color:#fff;border-color:rgba(255,255,255,.38);background:rgba(255,255,255,.07)}
.hero{position:relative;overflow:hidden;padding:94px 0 84px;color:#fff;background:radial-gradient(circle at 72% 42%,rgba(23,132,255,.28),transparent 29%),linear-gradient(135deg,#040e25,#08214c 70%,#11265b)}.hero:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle,rgba(75,224,255,.72) 1px,transparent 1.8px),radial-gradient(circle,rgba(103,91,255,.52) 1px,transparent 2px);background-position:0 0,17px 15px;background-size:38px 38px,53px 53px;opacity:.32;mask-image:radial-gradient(circle at 70% 45%,#000,transparent 66%);animation:drift 18s linear infinite}.hero:after{content:"";position:absolute;width:470px;height:470px;right:4%;top:4%;border:1px solid rgba(59,225,255,.12);border-radius:50%;box-shadow:0 0 0 80px rgba(59,225,255,.025),0 0 0 160px rgba(103,91,255,.018)}@keyframes drift{to{background-position:76px 38px,70px 68px}}.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:54px}.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;color:#bfefff;background:rgba(59,225,255,.09);border:1px solid rgba(59,225,255,.28);border-radius:999px;font-size:12px;font-weight:800}.badge:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 5px rgba(59,225,255,.12),0 0 15px var(--cyan)}h1{margin:20px 0 16px;font-size:clamp(42px,5vw,65px);line-height:1.12;letter-spacing:-2px}.hero h1 span{background:linear-gradient(90deg,#55dfff,#8c83ff);-webkit-background-clip:text;color:transparent}.lead{margin:0 0 30px;color:#c2d1e7;font-size:18px}.actions{display:flex;flex-wrap:wrap;gap:13px}.requirements{display:flex;flex-wrap:wrap;gap:17px;margin:22px 0 0;padding:0;list-style:none;color:#a9bbd4;font-size:12px}.requirements li:before{content:"✓";margin-right:6px;color:#4ce4b5;font-weight:900}
.visual{position:relative}.visual>img{width:100%;border:1px solid rgba(105,205,255,.25);border-radius:25px;box-shadow:0 35px 85px rgba(0,0,0,.35)}.node{position:absolute;padding:12px 15px;color:#173054;background:rgba(255,255,255,.95);border-radius:14px;box-shadow:var(--shadow);font-size:12px;font-weight:800}.node.one{left:-14px;bottom:28px}.node.two{right:-9px;top:25px}.node i{display:inline-block;width:9px;height:9px;margin-right:7px;border-radius:50%;background:#28ce91;box-shadow:0 0 0 5px rgba(40,206,145,.12)}
.trust{padding:24px 0;border-bottom:1px solid var(--line)}.trust-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}.trust strong{font-size:18px}.brands{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:29px;color:#53617a;font-weight:900}.section{padding:92px 0}.soft{background:var(--soft)}.dark{color:#fff;background:radial-gradient(circle at 20% 30%,rgba(23,132,255,.13),transparent 25%),var(--navy)}.section-head{max-width:740px;margin:0 auto 46px;text-align:center}.eyebrow{color:var(--blue);font-size:12px;font-weight:900;letter-spacing:1.5px}.dark .eyebrow{color:var(--cyan)}.section-head h2,.copy h2{margin:9px 0 12px;font-size:clamp(30px,4vw,44px);line-height:1.23;letter-spacing:-1px}.section-head p,.copy>p{margin:0;color:var(--muted);font-size:16px}.dark .section-head p{color:#adbed7}
.download-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.download-card{position:relative;overflow:hidden;padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:.22s}.download-card:before{content:"";position:absolute;width:100px;height:100px;right:-45px;top:-48px;border:1px solid #d9ebff;border-radius:50%;box-shadow:0 0 0 20px #f3f8ff}.download-card:hover{transform:translateY(-6px);border-color:#acd4ff;box-shadow:var(--shadow)}.os{position:relative;width:53px;height:53px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,var(--cyan),var(--blue),var(--violet));border-radius:16px;font-size:22px;font-weight:900}.download-card h3{margin:19px 0 2px;font-size:21px}.version{color:var(--blue);font-size:12px;font-weight:800}.meta{margin:17px 0;padding:14px 0;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line)}.meta div{display:flex;justify-content:space-between;gap:9px;margin:5px 0;color:var(--muted);font-size:12px}.meta span:last-child{color:#34435c;text-align:right}.download-card .btn{width:100%}
.feature-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:15px}.feature{padding:25px 20px;border:1px solid var(--line);border-radius:20px;background:#fff;transition:.2s}.feature:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.feature-icon{width:50px;height:50px;display:grid;place-items:center;margin-bottom:18px;color:#fff;background:linear-gradient(145deg,var(--blue),var(--violet));border-radius:16px;font-size:21px;font-weight:900}.feature:nth-child(even) .feature-icon{background:linear-gradient(145deg,var(--cyan),var(--blue))}.feature h3{margin:0 0 7px;font-size:17px}.feature p{margin:0;color:var(--muted);font-size:13px}.split{display:grid;grid-template-columns:1fr 1.05fr;align-items:center;gap:68px}.copy .badge{color:#126ddd;background:#eaf4ff;border-color:#c9e2ff}.points{display:grid;gap:14px;margin:28px 0}.point{display:flex;gap:11px}.check{flex:0 0 24px;height:24px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--blue),var(--violet));border-radius:50%;font-size:12px}.product>img{width:100%;border-radius:22px;box-shadow:var(--shadow)}.product-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:11px 18px 0}.product-strip img{height:82px;width:100%;object-fit:cover;border-radius:10px;box-shadow:0 8px 20px rgba(13,52,103,.12)}
.network-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:23px}.network-main{position:relative;overflow:hidden;border-radius:22px}.network-main img{width:100%;height:100%;min-height:420px;object-fit:cover}.network-main div{position:absolute;inset:auto 0 0;padding:75px 28px 25px;background:linear-gradient(transparent,rgba(2,13,34,.94))}.network-main h3{margin:3px 0;font-size:24px}.network-main p{margin:0;color:#d1e3fa}.network-side{display:grid;grid-template-columns:1fr 1fr;gap:14px}.network-side article{padding:24px;border:1px solid rgba(74,200,255,.18);border-radius:18px;background:rgba(255,255,255,.05)}.network-side strong{display:block;color:#52dcff;font-size:23px}.network-side span{color:#b2c4dc;font-size:12px}
.content-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:30px}.news-list{display:grid;gap:13px}.news{display:grid;grid-template-columns:115px 1fr;align-items:center;overflow:hidden;border:1px solid var(--line);border-radius:17px;background:#fff}.news img{width:100%;height:100px;object-fit:cover}.news div{padding:14px 17px}.news small{color:var(--blue);font-weight:800}.news h3{margin:2px 0;font-size:16px}.news p{margin:0;color:var(--muted);font-size:12px}.faq-list{display:grid;gap:10px}details{border:1px solid var(--line);border-radius:15px;background:#fff}summary{padding:16px 18px;cursor:pointer;list-style:none;font-size:14px;font-weight:800}summary:after{content:"+";float:right;color:var(--violet);font-size:18px}details[open] summary:after{content:"−"}details p{margin:0;padding:0 18px 17px;color:var(--muted);font-size:13px}
.cta{position:relative;overflow:hidden;padding:66px 28px;color:#fff;text-align:center;border-radius:28px;background:radial-gradient(circle at 75% 30%,rgba(59,225,255,.28),transparent 25%),linear-gradient(135deg,#106fdc,#5958ed)}.cta:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle,rgba(255,255,255,.35) 1px,transparent 1.5px);background-size:30px 30px;opacity:.25}.cta h2,.cta p,.cta .benefits,.cta .actions{position:relative}.cta h2{margin:0 0 8px;font-size:clamp(30px,4vw,44px)}.cta p{margin:0 0 20px;color:#dcecff}.benefits{display:flex;flex-wrap:wrap;justify-content:center;gap:18px;margin-bottom:25px;font-size:13px}.benefits span:before{content:"✓";margin-right:6px}.cta .actions{justify-content:center}
.page-hero{position:relative;overflow:hidden;padding:75px 0 65px;color:#fff;text-align:center;background:radial-gradient(circle at 50% 110%,rgba(23,132,255,.45),transparent 40%),var(--navy)}.page-hero:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle,rgba(59,225,255,.45) 1px,transparent 1.6px);background-size:36px 36px;opacity:.25}.page-hero .container{position:relative}.page-hero h1{margin:14px 0 10px}.page-hero p{max-width:680px;margin:auto;color:#b8c9e0}.quick-actions{justify-content:center;margin-top:25px}.tip{margin-top:24px;padding:18px 20px;border:1px solid var(--line);border-radius:15px;background:#f8fbff;color:var(--muted);font-size:13px;scroll-margin-top:90px}.help-layout{display:grid;grid-template-columns:250px 1fr;gap:38px;align-items:start}.help-nav{position:sticky;top:94px;padding:16px;border:1px solid var(--line);border-radius:17px;background:#fff}.help-nav strong{display:block;padding:8px 10px 12px}.help-nav a{display:block;padding:9px 10px;color:var(--muted);border-radius:9px;font-size:13px}.help-nav a:hover{color:var(--blue);background:#ebf5ff}.faq-section{margin-bottom:35px;scroll-margin-top:95px}.faq-section h2{font-size:25px}.search{display:flex;max-width:640px;margin:24px auto 0;padding:7px;border:1px solid rgba(117,197,255,.35);border-radius:14px;background:#fff}.search input{flex:1;min-width:0;padding:0 13px;border:0;outline:0}
.footer{padding:50px 0 24px;color:#a8bad3;background:#030d20}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:45px}.footer .brand{color:#fff}.footer p{max-width:330px;font-size:13px}.footer-col strong{display:block;margin-bottom:12px;color:#fff}.footer-col a{display:block;margin:7px 0;font-size:13px}.footer-col a:hover{color:#fff}.copyright{margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:12px}
@media(max-width:950px){.nav-links{display:none}.nav>.btn{margin-left:auto}.hero-grid,.split,.network-grid,.content-grid{grid-template-columns:1fr}.download-grid{grid-template-columns:repeat(2,1fr)}.feature-grid{grid-template-columns:repeat(3,1fr)}.help-layout{grid-template-columns:1fr}.help-nav{position:static}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.container{width:min(100% - 28px,1180px)}.header{height:64px}.nav>.btn{min-height:38px;padding:0 12px;font-size:12px}.hero{padding:62px 0}h1{font-size:39px}.section{padding:66px 0}.download-grid,.feature-grid{grid-template-columns:1fr}.trust-inner{align-items:flex-start;flex-direction:column}.brands{justify-content:flex-start;gap:16px}.network-side{grid-template-columns:1fr}.news{grid-template-columns:90px 1fr}.footer-grid{grid-template-columns:1fr}.node.one{left:7px}.node.two{right:7px}.cta{padding:50px 18px}}