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:root{--blue:#0759e8;--navy:#10243e;--text:#56677f;--muted:#8391a6;--line:#e6ecf5;--pale:#f4f8ff;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;color:var(--navy);font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.7;background:white}a{color:inherit;text-decoration:none}button{font:inherit}button[disabled]{opacity:1;cursor:default}a,button,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #6ea8ff;outline-offset:5px}svg{display:inline-block;vertical-align:middle}.wrap{width:min(1160px,calc(100% - 64px));margin:auto}.topbar{height:84px;position:sticky;top:0;z-index:20;background:#ffffffed;backdrop-filter:blur(16px);border-bottom:1px solid #edf1f7}.nav-row{height:100%;display:flex;align-items:center;gap:32px}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:26px;font-weight:800;letter-spacing:-1px}.brand img{width:38px;height:38px}.brand small{font-size:10px;letter-spacing:2.6px;font-weight:600;color:var(--muted);display:block;line-height:1}.navlinks{display:flex;gap:29px;margin-left:auto;font-size:14px;font-weight:500;align-items:center}.navlinks a{padding:27px 0;position:relative;color:#536177}.navlinks a:hover,.navlinks a.active{color:var(--blue)}.navlinks a.active:after{content:"";position:absolute;bottom:16px;left:50%;width:16px;height:3px;transform:translateX(-50%);background:var(--blue);border-radius:4px}.nav-actions{display:flex;align-items:center;gap:18px}.nav-login{border:0;background:none;color:var(--navy);font-size:14px;padding:0}.btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;border:1px solid transparent;background:var(--blue);color:white;border-radius:9px;padding:14px 24px;font-size:14px;font-weight:600;line-height:1.5;white-space:nowrap}.btn.secondary{background:white;border-color:#d8e3f4;color:var(--navy)}.btn.small{padding:10px 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23px;font-size:12px;color:var(--text);line-height:1.9;margin-top:24px}.plan-card{border:1px solid var(--line);border-radius:15px;padding:32px;background:#fff}.plan-card.primary{border-color:#8db5ff;box-shadow:0 12px 30px #1159d00b}.plan-card h2{font-size:23px;margin:18px 0 10px}.plan-card p{font-size:13px;color:var(--text)}.plan-card .plan-label{font-size:28px;font-weight:750;margin:24px 0;color:var(--navy)}.plan-card .btn{width:100%}.plan-card ul{list-style:none;margin:24px 0;padding:0;font-size:13px;color:var(--text)}.plan-card li{padding:9px 0;border-bottom:1px solid #f0f3f8}.plan-card li:before{content:"✓";color:var(--blue);margin-right:10px}.account-preview{max-width:840px;margin:auto;display:grid;grid-template-columns:220px 1fr;gap:28px;padding:28px;background:#f7faff;border:1px solid var(--line);border-radius:18px}.profile{background:#fff;border:1px solid var(--line);border-radius:12px;text-align:center;padding:28px 18px}.profile .avatar{width:58px;height:58px;font-size:19px;margin:auto}.profile h3{font-size:17px}.profile p{font-size:12px;color:var(--muted)}.account-info{display:grid;grid-template-columns:1fr 1fr;gap:16px}.info-tile{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px}.info-tile p{font-size:11px;color:var(--muted);margin:0}.info-tile h3{font-size:16px;margin:10px 0 8px}.info-tile span{font-size:11px;color:var(--text)}.help-tabs{display:flex;justify-content:center;gap:10px;margin-bottom:30px;flex-wrap:wrap}.help-tab{border:1px solid var(--line);background:#fff;padding:9px 20px;border-radius:30px;font-size:12px;color:var(--text);cursor:pointer}.help-tab[aria-pressed=true]{background:var(--blue);color:#fff;border-color:var(--blue)}[hidden]{display:none!important}.article{max-width:800px;margin:auto}.article h2{font-size:23px;margin-top:36px}.article p,.article li{color:var(--text);font-size:14px;line-height:2}.article .intro{font-size:17px;color:var(--navy)}.article 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@media(min-width:1450px){.hero-grid{min-height:690px}}@media(max-width:1100px){.nav-row{gap:20px}.navlinks{gap:18px}.nav-actions{gap:12px}h1{font-size:44px}.hero-grid{gap:24px}.float-card.sync{right:0}.platform-grid{grid-template-columns:repeat(2,1fr)}.split{gap:40px}}@media(max-width:850px){.wrap{width:calc(100% - 40px)}.topbar{height:72px}.nav-row{justify-content:space-between}.nav-actions{margin-left:auto}.menu-toggle{display:block}.navlinks{display:none;position:absolute;left:0;right:0;top:72px;padding:18px 22px;background:white;border-bottom:1px solid var(--line);gap:0;flex-direction:column;align-items:stretch}.navlinks.open{display:flex}.navlinks a{padding:12px}.navlinks a.active:after{display:none}.hero-grid{grid-template-columns:1fr;min-height:auto;padding:55px 0 45px;gap:35px}.hero-copy{max-width:600px}.hero h1{font-size:48px}.hero .lead{max-width:580px}.product-scene{width:min(540px,100%);margin:auto}.feature-grid{gap:14px}.feature-card{padding:22px}.split{grid-template-columns:1fr;gap:30px}.device-map{max-width:500px;width:100%;margin:auto}.strip-item{gap:8px}.strip-item span{font-size:9px}.strip-item strong{font-size:11px}.strip-item svg{width:22px}.section{padding:60px 0}.cta-box{padding:34px;align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:24px}.footer-brand{grid-column:1/-1}.footer-brand p{max-width:500px;margin:12px 0 0}.steps{gap:28px}.feature-grid .plan-card{padding:22px}.account-preview{grid-template-columns:190px 1fr;gap:18px}}@media(max-width:580px){.wrap{width:calc(100% - 36px)}.brand{font-size:23px}.brand img{width:33px;height:33px}.brand small{font-size:8px}.nav-actions .btn{display:none}.nav-login{font-size:12px}.nav-row{gap:15px}.hero-grid{padding-top:40px;gap:25px}.hero h1{font-size:39px;letter-spacing:-1.5px}.lead{font-size:13px}.button-row{gap:9px}.button-row .btn{padding:13px 19px}.platform-line{gap:12px;font-size:10px}.product-scene{padding-left:0;padding-top:25px}.app-body{grid-template-columns:80px 1fr;min-height:270px}.app-side{padding:19px 6px}.mini-brand{font-size:13px;margin:0 2px 17px}.mini-brand img{width:19px}.side-item{font-size:8px;padding:6px}.app-main{padding:18px 12px}.status-panel{padding:12px 9px;gap:10px}.status-panel .pill{display:none}.power-orb{width:42px;height:42px;border-width:4px}.app-card{padding:9px}.float-card{padding:9px 12px;gap:8px}.float-card.sync{right:-4px;top:0}.float-card.safe{left:2px;bottom:4px}.float-card strong{font-size:10px}.float-card span{font-size:9px}.float-card .icon-square{width:30px;height:30px}.strip-grid{grid-template-columns:repeat(2,1fr);row-gap:24px}.strip-item:nth-child(2){border:0}.strip-item strong{font-size:12px}.strip-item span{font-size:10px}.strip-item{justify-content:flex-start;padding-left:9px}.feature-grid,.steps{grid-template-columns:1fr}.section-head h2,h2,.split h2{font-size:27px}.section-head{margin-bottom:28px}.feature-card{padding:26px}.feature-card h3{margin-top:16px}.feature-card p{margin-bottom:18px}.steps{gap:24px}.step-num{font-size:29px;padding-bottom:12px}.step h3{margin-top:12px}.section{padding:48px 0}.device-map{min-height:300px}.map-device{padding:10px 15px;font-size:11px}.cta-box{padding:28px 24px}.cta-box h2{font-size:24px}.cta-box .button-row{gap:8px}.footer{margin-top:48px;padding-top:35px}.footer-grid{gap:15px}.footer-bottom{flex-direction:column;gap:8px}.page-hero{padding:35px 0 40px}.page-hero h1{font-size:32px;letter-spacing:-1px}.page-hero p{font-size:13px}.platform-grid{grid-template-columns:1fr}.platform-card p{min-height:0}.platform-card{padding:26px}.account-preview{grid-template-columns:1fr;padding:18px}.account-info{gap:12px}.info-tile{padding:17px}.breadcrumb{margin-bottom:20px}.scene-caption{font-size:9px}.hero-note{font-size:10px}.help-tab{padding:8px 14px}}
.float-card{z-index:2}.dashboard{z-index:1}