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:root{--blue:#165dff;--ink:#10234b;--muted:#6b7893;--line:#e6ecf6;--pale:#f5f8ff;--green:#20b68a}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;color:var(--ink);background:#fff;font-family:Inter,"Microsoft YaHei","PingFang SC",system-ui,sans-serif;font-size:15px;line-height:1.8}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}a,button,summary{ -webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #73a3ff;outline-offset:5px}.wrap{max-width:1180px;margin:auto;padding:0 32px}.skip{position:fixed;top:-100px;background:white;z-index:100;padding:10px}.skip:focus{top:0}.header{height:88px;border-bottom:1px solid #edf1f9;background:#ffffffed;position:sticky;top:0;z-index:30;backdrop-filter:blur(18px)}.header .wrap{height:100%;display:flex;align-items:center;gap:38px}.brand{display:flex;align-items:center;gap:10px;font-size:27px;font-weight:850;letter-spacing:-1px;white-space:nowrap}.brand img{width:38px;height:38px}.brand small{font-size:10px;color:#8a96ac;display:block;line-height:1;letter-spacing:3px}.nav{display:flex;align-items:center;gap:29px;margin-left:auto;font-size:14px}.nav a{position:relative;padding:30px 0}.nav a:hover,.nav .active{color:var(--blue)}.nav .active:after{content:"";position:absolute;bottom:20px;width:18px;height:3px;border-radius:3px;background:var(--blue);left:calc(50% - 9px)}.header-actions{display:flex;gap:18px;align-items:center;font-size:14px}.plain{background:none;border:0;color:var(--muted);padding:0}.btn{display:inline-flex;justify-content:center;align-items:center;gap:12px;padding:14px 25px;border:1px solid transparent;border-radius:9px;background:var(--blue);color:#fff;font-weight:600;box-shadow:0 7px 16px #165dff18;white-space:nowrap}.btn.small{padding:9px 18px;font-size:13px}.btn.secondary{background:#fff;border-color:#d9e2f1;box-shadow:none;color:var(--ink)}.menu{display:none;border:0;background:var(--pale);border-radius:6px;padding:6px 12px;font-size:22px}.hero{overflow:hidden;position:relative;background:radial-gradient(ellipse at 77% 43%,#deebff 0,transparent 50%),linear-gradient(115deg,#fcfdff,#f3f7ff);padding:84px 0 61px}.hero:after{content:"";position:absolute;width:650px;height:650px;border:1px solid #dbe8fc;border-radius:50%;right:-315px;top:40px;pointer-events:none}.hero-grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:30px}.eyebrow{font-size:12px;font-weight:650;color:var(--blue);letter-spacing:1.5px;display:flex;align-items:center;gap:9px}.pill{display:inline-flex;align-items:center;gap:8px;padding:5px 13px;border:1px solid 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15px 30px #23447525;padding:21px 9px 18px;text-align:center;height:247px;transform:rotate(7deg)}.phone:before{content:"";width:40px;height:7px;background:#233353;border-radius:0 0 7px 7px;position:absolute;top:0;left:39px}.phone strong{font-size:14px}.phone .power{width:63px;height:63px;font-size:25px;border-width:5px;margin-top:26px}.phone .node{font-size:8px;padding:5px}.float{position:absolute;z-index:5;background:#fff;border:1px solid #e7eefb;border-radius:10px;box-shadow:0 10px 25px #355c9510;padding:11px 15px;font-size:11px;display:flex;gap:11px;align-items:center}.float b{font-size:16px;color:var(--ink)}.float small{font-size:9px;color:#91a0b8;display:block}.float-top{left:0;top:17px}.float-bottom{left:3px;bottom:17px}.float .signal{color:var(--green);font-size:22px}.demo-caption{position:absolute;bottom:-8px;font-size:9px;color:#97a7bf;right:35px}.trust{display:grid;grid-template-columns:repeat(4,1fr);padding:30px 0;border-bottom:1px solid 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h3{font-size:18px;margin-bottom:10px}.card p{color:var(--muted);font-size:13px;margin-bottom:18px}.card .tag{font-size:10px;color:#6683b2;border-top:1px solid #edf1f7;padding-top:17px;display:block;letter-spacing:1px}.network{display:grid;grid-template-columns:1.05fr 1fr;gap:80px;align-items:center}.map-panel{position:relative;background:radial-gradient(ellipse,#e3edff,#f6f9ff 70%);border-radius:18px;min-height:360px;display:grid;place-items:center;overflow:hidden}.map-panel img{width:91%;height:330px}.map-chip{position:absolute;background:#fff;box-shadow:0 8px 25px #35619d15;border:1px solid #e2ebfa;font-size:11px;padding:6px 13px;border-radius:7px}.chip-a{left:25px;top:60px}.chip-b{right:20px;bottom:65px}.mini-label{position:absolute;bottom:17px;color:#8d9eb8;font-size:10px}.network h2{margin-top:14px}.network p{color:var(--muted);font-size:14px}.check-list{list-style:none;padding:0;margin:26px 0 0}.check-list li{margin:13px 0;font-size:13px}.check-list 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0}summary{font-size:14px;cursor:pointer;font-weight:550;list-style:none;display:flex;justify-content:space-between;gap:24px}summary:after{content:"+";font-size:22px;line-height:1;color:#8ea1c0}details[open] summary:after{content:"−"}summary::-webkit-details-marker{display:none}details p{font-size:13px;color:var(--muted);margin:14px 24px 0 0}.cta{padding:48px 54px;border-radius:17px;background:linear-gradient(115deg,#165dff,#3a7dff);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;overflow:hidden;margin-bottom:75px}.cta:after{content:"";width:300px;height:300px;border:1px solid #ffffff20;border-radius:50%;position:absolute;right:30px;top:-80px;pointer-events:none}.cta h2{font-size:28px;margin-bottom:7px;letter-spacing:-.5px}.cta p{font-size:13px;color:#dbe7ff;margin:0}.cta .btn{background:#fff;color:var(--blue);z-index:1;box-shadow:none}.footer{border-top:1px solid var(--line);background:#fbfcff;padding:52px 0 20px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:50px}.footer .brand{font-size:23px}.footer p{max-width:290px;color:#8b98ad;font-size:12px;margin-top:18px}.footer h3{font-size:12px;margin:0 0 18px}.footer a:not(.brand){font-size:12px;color:#7e8ca4;display:block;margin:9px 0}.copyright{border-top:1px solid var(--line);padding-top:21px;margin-top:36px;display:flex;justify-content:space-between;font-size:10px;color:#98a5ba;gap:20px}.page-hero{text-align:center;padding:64px 0 55px;background:radial-gradient(ellipse at 50% 100%,#eaf1ff,#fafcff 75%)}.page-hero .eyebrow{justify-content:center}.page-hero h1{font-size:43px;margin:17px 0}.page-hero p{color:var(--muted);font-size:15px;max-width:620px;margin:0 auto}.crumb{font-size:11px;color:#8a9ab3;margin-bottom:24px}.download-feature{margin-top:35px;border:1px solid #dfe8f8;border-radius:17px;padding:35px;background:#f6f9ff;display:flex;justify-content:space-between;gap:24px;align-items:center}.download-feature 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.power .ico{width:36px;height:36px}.phone .power .ico{width:25px;height:25px}