*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:#3C485A;background:#fff;line-height:1.72;overflow-x:hidden}body.panel-open{overflow:hidden}img{display:block;max-width:100%}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.shell{width:min(1320px,calc(100% - 48px));margin:auto}.skip-link{position:fixed;left:16px;top:-64px;z-index:110;background:#071D37;color:#fff;padding:10px 14px;border-radius:10px}.skip-link:focus{top:16px}.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid rgba(22,119,238,.12)}.desktop-nav{height:74px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:18px}.brand-island,.mobile-brand,.footer-title,.panel-brand{display:flex;align-items:center;gap:10px}.logo-slot{width:42px;height:38px;display:grid;place-items:center}.logo-slot img{max-height:36px;object-fit:contain}.brand-name{display:flex;flex-direction:column;line-height:1.05;color:#16243A}.brand-name strong{font-size:17px}.brand-name small,.panel-head small,.panel-brand small,.footer-title small{font-size:11px;color:#6B7787;letter-spacing:.1em}.primary-nav,.nav-actions{display:flex;align-items:center;white-space:nowrap}.primary-nav{justify-content:center;gap:2px}.nav-actions{gap:4px}.nav-link,.nav-button,.app-link{min-height:44px;padding:0 12px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;border:0;background:transparent;color:#3C485A}.nav-link:hover,.nav-button:hover,.nav-link:focus-visible,.nav-button:focus-visible{background:#EDF5FF;color:#075FC6}.nav-link.is-active{background:#EDF5FF;color:#075FC6}.nav-link.is-active:before{content:"";width:6px;height:6px;border-radius:50%;background:#1677EE;margin-right:6px}.app-link{padding-inline:18px;background:linear-gradient(135deg,#3998FF,#1677EE 55%,#075FC6);color:#fff}.mobile-topbar{display:none;height:62px;align-items:center;justify-content:space-between}.mobile-control{min-width:48px;min-height:44px;border:0;background:#F7FAFF;border-radius:12px;color:#08488D}.hero-banner{position:relative;aspect-ratio:16/7;max-height:520px;overflow:hidden;background:linear-gradient(135deg,#E5F1FF,#CFE4FF 46%,#1677EE);border-radius:0 0 34px 34px}.hero-banner>img{width:100%;height:100%;object-fit:contain}.hero-copy{position:absolute;left:5%;bottom:9%;max-width:560px;padding:24px 26px;border-radius:24px;background:rgba(7,29,55,.84);color:#fff;box-shadow:0 16px 48px rgba(7,29,55,.2)}.hero-copy h1{font-size:clamp(42px,4.1vw,56px);line-height:1.08;margin:0 0 10px}.hero-copy p{margin:0;color:#DCEEFF}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px auto 54px}.quick-grid a{padding:18px 20px;min-height:96px;border:1px solid rgba(22,119,238,.12);border-radius:20px;background:#fff;box-shadow:0 12px 34px rgba(30,72,120,.08)}.quick-grid strong{display:block;color:#16243A;font-size:18px}.quick-grid span{font-size:14px;color:#6B7787}.section{padding:64px 0}.section.alt{background:#F7FAFF}.section.soft{background:#EDF5FF}.section.deep{background:#0A315E;color:#DCEEFF}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:28px}.eyebrow{display:block;color:#075FC6;font-weight:700;font-size:13px;letter-spacing:.08em}.section-head h2{margin:4px 0 0;color:#16243A;font-size:clamp(28px,3vw,34px);line-height:1.2}.section-head p{max-width:620px;margin:0;color:#6B7787}.deep .section-head h2{color:#fff}.deep .section-head p,.deep p{color:#DCEEFF}.editorial{display:grid;grid-template-columns:1.4fr 1fr;gap:18px}.feature-card,.side-card,.card,.topic,.faq-item{background:#fff;border:1px solid rgba(22,119,238,.12);border-radius:22px;box-shadow:0 12px 34px rgba(30,72,120,.08)}.feature-card{padding:30px}.feature-card h3{margin:0 0 12px;color:#16243A;font-size:28px}.side-stack{display:grid;gap:18px}.side-card,.card{padding:22px}.side-card h3,.card h3{margin:0 0 8px;color:#16243A}.mini-grid{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.mini-grid article{padding:18px;border-radius:18px;background:#EDF5FF}.split{display:grid;grid-template-columns:1.15fr .95fr;gap:36px;align-items:center}.image-slot,.city-feature-image,.app-preview-image,.brand-image,.media-slot{border-radius:26px;overflow:hidden;border:1px solid rgba(22,119,238,.12);background:linear-gradient(145deg,#E5F1FF,#fff);min-height:250px}.city-feature-image,.brand-image{aspect-ratio:4/3}.city-feature-image img,.brand-image img{width:100%;height:100%;object-fit:cover}.app-preview-image{min-height:0;aspect-ratio:9/16;max-height:520px;width:min(100%,293px);margin:auto;display:flex;align-items:center;justify-content:center}.app-preview-image img{width:100%;height:100%;max-height:520px;object-fit:contain}.split h2{margin:0 0 14px;font-size:clamp(28px,3vw,34px);color:#16243A}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.primary-button,.secondary-button{min-height:44px;padding:0 18px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center}.primary-button{background:linear-gradient(135deg,#3998FF,#1677EE 55%,#075FC6);color:#fff}.secondary-button{background:#EDF5FF;color:#075FC6;border:1px solid rgba(22,119,238,.12)}.time-grid,.info-grid,.guide-grid,.principle-grid,.security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.time-grid article,.guide-grid article,.principle-grid article{padding:22px;background:#fff;border-radius:20px;border:1px solid rgba(22,119,238,.12)}.time-grid article{border-top:4px solid #1677EE}.time-grid h3,.guide-grid h3,.principle-grid h3{margin:5px 0 8px;color:#16243A}.route{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.route div{padding:18px 15px;border-radius:18px;background:#fff;border:1px solid rgba(22,119,238,.12)}.route b{display:block;color:#075FC6}.route strong{display:block;color:#16243A;margin:4px 0}.interest-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.interest-grid a{min-height:86px;display:flex;align-items:center;justify-content:center;border-radius:18px;background:#fff;border:1px solid rgba(22,119,238,.12);font-size:17px;color:#16243A}.qa-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.qa-grid article{padding:22px;border-radius:20px;background:#fff;border:1px solid rgba(22,119,238,.12)}.qa-grid h3{color:#16243A;margin:0 0 8px}.story-main{padding:30px;border-radius:24px;background:#fff;border:1px solid rgba(22,119,238,.12)}.story-main h3{margin:0 0 10px;color:#16243A;font-size:27px}.story-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:14px}.story-grid article{padding:18px;border-radius:18px;background:#EDF5FF}.story-grid h3{margin:0 0 6px;color:#16243A}.topic-list{display:grid;gap:10px}.topic{padding:18px 20px;display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center}.topic-no{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#EDF5FF;color:#075FC6;font-weight:700}.topic h3{margin:0;color:#16243A}.topic p{margin:4px 0 0;color:#6B7787}.topic a{color:#075FC6;font-weight:700}.album-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:14px}.media-slot{min-height:180px;position:relative}.media-slot.wide{grid-row:span 2;min-height:400px}.media-slot.medium{min-height:240px}.media-slot:after{content:"";position:absolute;inset:12px;border:1px solid rgba(22,119,238,.12);border-radius:18px}.pulse-list{display:grid;gap:10px}.pulse{display:grid;grid-template-columns:140px 1fr;gap:22px;padding:18px 0;border-bottom:1px solid rgba(22,119,238,.12)}.pulse strong{color:#075FC6}.security-grid{grid-template-columns:repeat(3,1fr)}.security-grid article{padding:22px;border-radius:20px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12)}.security-grid h3{margin:0 0 8px;color:#fff}.page-hero{padding:64px 0 34px;background:linear-gradient(180deg,#EDF5FF,#fff)}.page-hero h1{font-size:clamp(36px,4vw,46px);line-height:1.14;color:#16243A;margin:8px 0 14px}.page-hero p{max-width:800px;font-size:17px;margin:0;color:#4A586B}.article-shell{width:min(900px,calc(100% - 48px));margin:auto;padding:28px 0 74px}.article-shell section{padding:24px 0;border-bottom:1px solid rgba(22,119,238,.12)}.article-shell section:last-child{border-bottom:0}.article-shell h2{font-size:28px;color:#16243A;margin:0 0 12px}.article-shell p{margin:0 0 14px}.magazine{display:grid;grid-template-columns:1.25fr .75fr;gap:24px}.magazine aside{padding:24px;border-radius:22px;background:#0A315E;color:#DCEEFF}.magazine aside h2{color:#fff}.index-wall{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.index-wall article{padding:22px;border-radius:20px;background:#fff;border:1px solid rgba(22,119,238,.12)}.index-wall h2{font-size:22px}.article-list{display:grid;gap:14px}.article-list article{display:grid;grid-template-columns:180px 1fr;gap:22px;padding:20px 0;border-bottom:1px solid rgba(22,119,238,.12)}.article-list .tag{font-weight:700;color:#075FC6}.faq-list{display:grid;gap:10px}.faq-item{overflow:hidden}.faq-item summary{cursor:pointer;padding:18px 20px;color:#16243A;font-weight:700;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item p{padding:0 20px 20px;margin:0}.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.contact-grid article{padding:22px;border-radius:20px;background:#EDF5FF}.site-footer{background:#071D37;color:#DCEEFF;border-top:1px solid rgba(255,255,255,.14)}.footer-inner{display:grid;grid-template-columns:1.1fr 2fr;gap:60px;padding:56px 0 38px}.footer-logo,.panel-logo{width:48px;height:48px;border-radius:14px;background:rgba(255,255,255,.08);display:grid;place-items:center}.footer-logo img,.panel-logo img{max-height:36px;object-fit:contain}.footer-title strong,.panel-brand strong,.panel-head strong{display:block;color:#fff}.panel-brand strong,.panel-head strong{color:#16243A;font-size:20px}.footer-brand p{color:#DCEEFF}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-links h2{font-size:15px;color:#fff;margin:0 0 10px}.footer-links a{display:block;padding:4px 0;font-size:14px}.footer-bottom{min-height:64px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;align-items:center;gap:18px;font-size:13px}.footer-bottom span:last-child{display:flex;gap:14px}.overlay{position:fixed;inset:0;z-index:70;background:rgba(7,29,55,.5);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}.mega-menu,.search-panel{position:fixed;left:0;right:0;top:0;z-index:80;background:#fff;transform:translateY(-105%);visibility:hidden;pointer-events:none;transition:.24s}.mega-menu.is-open,.search-panel.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.panel-inner{padding:28px 0 34px}.panel-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px}.close-button{min-height:44px;padding:0 16px;border-radius:999px;border:1px solid rgba(22,119,238,.12);background:#F7FAFF;color:#075FC6}.mega-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}.mega-grid section{padding:18px;border-radius:18px;background:#F7FAFF}.mega-grid h2{font-size:15px;color:#075FC6;margin:0 0 8px}.mega-grid a{display:block;padding:8px 0;color:#16243A}.search-form label{display:block;color:#16243A;margin-bottom:8px}.search-row{display:flex;gap:10px}.search-row input{flex:1;min-height:50px;padding:0 16px;border:1px solid rgba(22,119,238,.18);border-radius:14px}.search-row button{min-width:120px;border:0;border-radius:14px;background:linear-gradient(135deg,#3998FF,#1677EE 55%,#075FC6);color:#fff}.search-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.search-links a{padding:8px 12px;border-radius:999px;background:#EDF5FF;color:#075FC6}.mobile-bottom-nav{display:none}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(22,119,238,.34);outline-offset:2px}
@media(max-width:1100px){.primary-nav .nav-link{padding-inline:8px}.brand-name small{display:none}.route{grid-template-columns:repeat(3,1fr)}.interest-grid{grid-template-columns:repeat(3,1fr)}.footer-inner{grid-template-columns:1fr}.story-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.desktop-nav{display:none}.mobile-brand .logo-slot img{max-height:30px}.mobile-topbar{display:flex}.shell{width:calc(100% - 32px)}.hero-banner{aspect-ratio:16/10;border-radius:0 0 24px 24px}.hero-copy{left:4%;right:4%;bottom:7%;max-width:none;padding:18px}.hero-copy h1{font-size:clamp(30px,8vw,38px)}.quick-grid{grid-template-columns:repeat(2,1fr);margin-bottom:30px}.section{padding:46px 0}.section-head{align-items:start}.editorial,.split,.magazine{grid-template-columns:1fr}.mini-grid{grid-template-columns:1fr 1fr}.time-grid,.guide-grid,.principle-grid,.security-grid{grid-template-columns:1fr 1fr}.qa-grid{grid-template-columns:1fr 1fr}.album-grid{grid-template-columns:1.4fr 1fr}.media-slot.wide{grid-column:1/-1;grid-row:auto;min-height:300px}.mega-menu{bottom:0;overflow:auto}.mega-grid{grid-template-columns:1fr 1fr}.footer-links{grid-template-columns:1fr 1fr}.mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:45;display:grid;grid-template-columns:repeat(5,1fr);min-height:58px;padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid rgba(22,119,238,.12);box-shadow:0 -8px 24px rgba(30,72,120,.08)}.mobile-bottom-nav a{min-height:54px;display:flex;align-items:center;justify-content:center;font-size:13px}.site-footer{padding-bottom:66px}.page-hero{padding-top:42px}.page-hero h1{font-size:clamp(28px,8vw,34px)}.article-list article{grid-template-columns:1fr;gap:6px}.article-shell{width:calc(100% - 32px)}}
@media(max-width:560px){.shell{width:calc(100% - 24px)}.hero-copy{padding:15px 16px}.hero-copy p{font-size:14px}.quick-grid{gap:8px}.quick-grid a{padding:14px;min-height:84px}.section-head{display:block}.section-head p{margin-top:8px}.mini-grid,.time-grid,.guide-grid,.principle-grid,.security-grid,.qa-grid{grid-template-columns:1fr}.route{grid-template-columns:1fr 1fr}.interest-grid{grid-template-columns:1fr 1fr}.story-grid{grid-template-columns:1fr}.topic{grid-template-columns:auto 1fr}.topic a{grid-column:2}.album-grid{grid-template-columns:1fr}.media-slot.wide{grid-column:auto}.pulse{grid-template-columns:1fr;gap:4px}.footer-links{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column;justify-content:center;padding:16px 0;text-align:center}.mega-grid{grid-template-columns:1fr}.search-row{flex-direction:column}.search-row button{min-height:48px}.contact-grid{grid-template-columns:1fr}.article-shell{width:calc(100% - 24px)}.article-shell h2{font-size:24px}.app-preview-image{max-height:480px}}