:root{--blue:#176cf3;--navy:#071a39;--cyan:#19c5dd;--orange:#ff975d;--green:#21b97a;--ink:#14203a;--muted:#69768c;--line:#dfe7f2;--soft:#f3f7fc;--white:#fff;--shadow:0 22px 64px rgba(29,65,126,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.7;background:#fff}a{color:inherit;text-decoration:none}img{display:block;width:100%;height:auto}button,input{font:inherit}.container{width:min(1200px,calc(100% - 40px));margin:0 auto}
.topbar{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);background:rgba(255,255,255,.9);backdrop-filter:blur(18px)}.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:26px}.logo{display:flex;align-items:center;gap:11px;color:var(--blue);font-size:21px;font-weight:900}.logo-pin{position:relative;width:42px;height:42px;display:grid;place-items:center;border-radius:50% 50% 50% 8px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 12px 28px rgba(23,108,243,.24);transform:rotate(-45deg)}.logo-pin span{transform:rotate(45deg)}.nav-links{display:flex;align-items:center;gap:24px;color:#536179;font-size:13px}.nav-links a:hover,.inline-link{color:var(--blue)}.nav-actions{display:flex;gap:10px}
.btn{display:inline-flex;min-height:46px;padding:0 23px;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:10px;font-weight:800;transition:.2s ease}.btn:hover{transform:translateY(-2px)}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--blue),#4c94ff);box-shadow:0 14px 30px rgba(23,108,243,.24)}.btn-outline{color:var(--blue);border-color:#cbdcf8;background:#fff}.btn-white{color:var(--blue);background:#fff;box-shadow:0 14px 34px rgba(5,34,88,.16)}
.hero{position:relative;overflow:hidden;padding:90px 0 84px;background:linear-gradient(135deg,#f4f8ff,#fff 60%,#f0fbfc)}.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(23,108,243,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(23,108,243,.035) 1px,transparent 1px);background-size:38px 38px;mask-image:linear-gradient(to bottom,#000,transparent 82%)}.route{position:absolute;height:2px;border-radius:3px;background:linear-gradient(90deg,transparent,var(--cyan),var(--blue),transparent);opacity:.32}.route.one{width:55%;right:-7%;top:23%;transform:rotate(-13deg)}.route.two{width:47%;left:-8%;bottom:17%;transform:rotate(11deg)}.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.map-tag{display:inline-flex;align-items:center;gap:9px;margin-bottom:18px;padding:7px 12px;border:1px solid #d6e5fb;border-radius:999px;color:var(--blue);background:#fff;font-size:12px;font-weight:800}.map-tag i{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(33,185,122,.11)}h1,h2,h3,p{margin-top:0}h1{margin-bottom:18px;font-size:clamp(41px,6vw,66px);line-height:1.08;letter-spacing:-.05em}.gradient{color:transparent;background:linear-gradient(105deg,var(--navy),var(--blue),var(--cyan));background-clip:text}.lead{max-width:620px;margin-bottom:27px;color:var(--muted);font-size:17px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}.requirements{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;color:#718097;list-style:none;font-size:12px}.requirements li{padding:6px 9px;border:1px solid var(--line);border-radius:7px;background:rgba(255,255,255,.82)}
.map-panel{position:relative;padding:14px;border:1px solid #dce7f5;border-radius:24px;background:#fff;box-shadow:var(--shadow)}.map-panel>img{min-height:370px;object-fit:cover;border-radius:16px;background:#eaf2fc}.city-card{position:absolute;right:-22px;bottom:24px;width:278px;padding:16px;border:1px solid #dce6f4;border-radius:14px;background:rgba(255,255,255,.97);box-shadow:0 18px 48px rgba(29,65,126,.15)}.city-card strong{display:block;margin-bottom:5px;color:var(--blue)}.city-card p{margin:0;color:var(--muted);font-size:12px}.city-list{display:flex;justify-content:space-between;margin-top:11px;padding-top:10px;border-top:1px solid var(--line);font-size:10px}.city-list span{color:#526178}.city-list b{color:var(--green)}
section{padding:82px 0}.soft{background:var(--soft)}.dark{color:#fff;background:radial-gradient(circle at 13% 17%,rgba(25,197,221,.18),transparent 27%),linear-gradient(135deg,var(--navy),#174d98)}.section-head{max-width:760px;margin:0 auto 38px;text-align:center}.section-head.left{margin-left:0;text-align:left}.eyebrow{display:block;margin-bottom:9px;color:var(--blue);font-size:12px;font-weight:900;letter-spacing:.13em}.dark .eyebrow{color:#73dfe9}.section-head h2{margin-bottom:11px;font-size:clamp(30px,4vw,44px);line-height:1.22;letter-spacing:-.035em}.section-head p{margin:0;color:var(--muted);font-size:15px}.dark .section-head p{color:#bdcbe0}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.card{border:1px solid var(--line);border-radius:17px;background:#fff;box-shadow:0 12px 36px rgba(35,69,133,.06)}.download-card{display:flex;min-height:286px;padding:23px;flex-direction:column;justify-content:space-between}.os-icon,.feature-icon{width:50px;height:50px;display:grid;place-items:center;margin-bottom:16px;border-radius:14px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--cyan));font-size:19px;font-weight:900}.download-card:nth-child(even) .os-icon{background:linear-gradient(135deg,var(--orange),#ffb16f)}.download-card h3{margin-bottom:7px;font-size:20px}.meta{display:grid;gap:5px;margin-bottom:19px;color:var(--muted);font-size:12px}.feature-card{min-height:222px;padding:22px}.feature-card h3{margin-bottom:8px;font-size:18px}.feature-card p{margin:0;color:var(--muted);font-size:13px}.feature-icon{background:linear-gradient(135deg,var(--navy),var(--blue));font-size:16px}
.city-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.city-feature{padding:24px}.city-feature span{display:inline-flex;margin-bottom:14px;color:var(--blue);font-size:11px;font-weight:900;letter-spacing:.1em}.city-feature h3{margin-bottom:7px;font-size:21px}.city-feature p{margin:0;color:var(--muted);font-size:13px}
.solution{display:grid;grid-template-columns:.92fr 1.08fr;gap:52px;align-items:center}.solution-copy h2{margin-bottom:16px;font-size:clamp(32px,4vw,47px);line-height:1.2;letter-spacing:-.04em}.solution-copy p{color:var(--muted)}.points{display:grid;gap:9px;margin-top:22px}.point{display:flex;gap:11px;padding:13px 15px;border:1px solid var(--line);border-radius:10px;background:#fff}.check{color:var(--green);font-weight:900}.product{padding:12px;border:1px solid #dce6f4;border-radius:20px;background:#fff;box-shadow:var(--shadow)}.product>img{min-height:340px;object-fit:cover;border-radius:13px;background:#eaf2fc}.thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:10px}.thumbs img{aspect-ratio:4/3;object-fit:cover;border:1px solid var(--line);border-radius:11px;background:#eaf2fc}
.trust-num{margin-bottom:29px;text-align:center;font-size:clamp(47px,8vw,82px);line-height:1;letter-spacing:-.05em;font-weight:900}.brands{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.brands div{display:grid;min-height:84px;place-items:center;border:1px solid rgba(255,255,255,.17);border-radius:12px;background:rgba(255,255,255,.07);font-size:18px;font-weight:800}
.content{display:grid;grid-template-columns:1.05fr .95fr;gap:24px}.news,.faqs{display:grid;gap:12px}.news-item{display:grid;grid-template-columns:125px 1fr;gap:17px;padding:13px;align-items:center}.news-item img{width:125px;height:94px;object-fit:cover;border-radius:10px;background:#eaf2fc}.news-item small{color:var(--blue);font-weight:800}.news-item h3{margin:3px 0 4px;font-size:17px}.news-item p,.faq p{margin:0;color:var(--muted);font-size:12px}.faq{padding:17px 19px}.faq h3{margin-bottom:5px;font-size:16px}
.cta-section{padding-top:0}.cta{padding:50px;color:#fff;border-radius:20px;background:radial-gradient(circle at 90% 10%,rgba(255,151,93,.2),transparent 27%),linear-gradient(135deg,var(--blue),#164485);box-shadow:0 24px 70px rgba(20,73,166,.22)}.cta h2{max-width:760px;margin-bottom:11px;font-size:clamp(32px,4vw,47px);line-height:1.18}.cta>p{max-width:760px;color:#d7e3f2}.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:24px 0}.benefits div{padding:14px;border:1px solid rgba(255,255,255,.2);border-radius:10px;background:rgba(255,255,255,.08)}
.page-hero{padding:72px 0 54px;text-align:center;background:radial-gradient(circle at 50% 0,rgba(23,108,243,.13),transparent 42%),var(--soft)}.page-hero h1{margin-bottom:12px;font-size:clamp(38px,5vw,57px)}.page-hero p{max-width:720px;margin:0 auto;color:var(--muted);font-size:16px}.breadcrumb{margin-bottom:12px;color:var(--blue);font-size:12px}.download-detail{display:grid;grid-template-columns:1fr 1fr;gap:18px}.download-box{padding:27px;scroll-margin-top:95px}.download-box h2{margin-bottom:7px;font-size:26px}.download-box>p{color:var(--muted)}.detail-meta{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:20px 0}.detail-meta div{padding:11px;border:1px solid var(--line);border-radius:8px;color:var(--muted);font-size:12px}.notice{margin-top:20px;padding:17px;border-left:4px solid var(--orange);border-radius:8px;background:#fff;color:#53627a}
.help-layout{display:grid;grid-template-columns:250px 1fr;gap:28px;align-items:start}.help-menu{position:sticky;top:95px;padding:16px}.help-menu a{display:block;padding:10px 11px;border-bottom:1px solid var(--line);color:#637189;font-size:13px}.help-menu a:hover{color:var(--blue)}.help-content{display:grid;gap:15px}.help-block{padding:26px;scroll-margin-top:95px}.help-block h2{margin-bottom:9px;font-size:24px}.help-block p,.help-block li{color:var(--muted)}.help-block ol,.help-block ul{margin-bottom:0;padding-left:22px}.search{display:flex;max-width:600px;margin:24px auto 0;padding:6px;border:1px solid var(--line);border-radius:11px;background:#fff;box-shadow:0 12px 35px rgba(35,69,133,.07)}.search input{min-width:0;flex:1;padding:9px 12px;border:0;outline:0;color:var(--ink)}
.footer{padding:28px 0;border-top:1px solid #1c3765;color:#91a5bd;background:var(--navy);font-size:12px}.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.footer-links{display:flex;gap:18px;flex-wrap:wrap}
@media(max-width:1024px){.hero-grid,.solution,.content{grid-template-columns:1fr}.grid-4,.grid-5{grid-template-columns:repeat(2,1fr)}.city-grid,.brands{grid-template-columns:repeat(3,1fr)}.nav-links{display:none}.city-card{right:12px}}
@media(max-width:720px){.container{width:min(100% - 28px,1200px)}.nav-actions .btn-outline{display:none}.hero{padding:58px 0}section{padding:58px 0}.grid-4,.grid-5,.city-grid,.brands,.benefits,.download-detail{grid-template-columns:1fr}.help-layout{grid-template-columns:1fr}.help-menu{position:static}.hero-actions .btn,.download-card .btn{width:100%}.map-panel>img{min-height:250px}.city-card{position:static;width:100%;margin-top:10px}.news-item{grid-template-columns:1fr}.news-item img{width:100%;height:170px}.cta{padding:33px 22px}.thumbs{grid-template-columns:1fr}.detail-meta{grid-template-columns:1fr}}