*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:#31485f;background:#f6fbff;font-size:16px;line-height:1.8}a{color:#246695;text-decoration:none}a:hover{color:#2aa9e0}button{font:inherit;cursor:pointer}img{max-width:100%}.wrap{max-width:1160px;margin:0 auto;padding-left:24px;padding-right:24px}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:12px;top:8px;z-index:20000;background:#fff;padding:8px}.site-header{position:sticky;top:0;z-index:1000;background:#fff;border-bottom:1px solid rgba(42,169,224,.12);box-shadow:0 4px 22px #1b67900a}.header-inner{height:70px;display:flex;align-items:center;gap:25px}.brand{display:flex;align-items:center;flex:none;min-width:145px}.brand img{max-height:38px;width:auto;object-fit:contain}.brand-fallback{font-weight:900;font-size:24px;letter-spacing:1px;color:#244c78}.brand-fallback span{color:#6b4faf}.desktop-nav{display:flex;align-items:stretch;gap:20px;flex:1;height:100%;justify-content:center}.desktop-nav a{font-size:14px;color:#244c78;display:flex;align-items:center;position:relative;white-space:nowrap}.desktop-nav a.active,.desktop-nav a:hover{color:#2aa9e0}.desktop-nav a.active:after{position:absolute;bottom:0;left:0;right:0;content:"";height:2px;background:#2aa9e0}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-width:82px;height:40px;padding:0 18px;border-radius:999px;background:linear-gradient(135deg,#53c2f2,#2aa9e0 55%,#6b4faf);color:white;font-weight:700;white-space:nowrap}.main-btn:hover{color:white;filter:brightness(.96)}.subnav{background:#eff8ff;border-bottom:1px solid #dceffb}.subnav-inner{display:flex;align-items:center;gap:29px;min-height:44px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.subnav a{font-size:13px;color:#58718e}.subnav a.active,.subnav a:hover{color:#2aa9e0;font-weight:700}.page-main{padding-top:32px;padding-bottom:65px;min-height:55vh}.hero{background:linear-gradient(120deg,#e9f7ff,#fff 62%,#f1effb);border:1px solid #dceef9;border-radius:14px;padding:30px 34px;margin-bottom:32px}.eyebrow{font-weight:700;letter-spacing:2px;color:#299cce;font-size:12px;margin:0 0 8px}.hero h1{color:#1c3552;font-size:35px;line-height:1.35;margin:0 0 16px}.hero p{max-width:810px;margin:0;color:#536c83}.home-hero{padding:20px}.home-hero .hero-copy{padding:20px 14px 7px}.home-hero .hero-copy p{max-width:900px}.section{margin:38px 0}.section-heading{display:flex;justify-content:space-between;align-items:baseline;gap:12px}.section-heading h2,.section>h2{font-size:25px;color:#1c3552;line-height:1.4;margin:0 0 16px}.section-heading a{font-size:14px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.topic-card{display:block;background:#fff;padding:24px;border:1px solid rgba(42,169,224,.16);border-radius:13px;box-shadow:0 5px 25px #28618a08;transition:transform .2s}.topic-card:hover{transform:translateY(-3px)}.topic-card-icon{display:inline-flex;width:38px;height:38px;border-radius:12px;background:#eff8ff;color:#2aa9e0;align-items:center;justify-content:center}.topic-card h3{font-size:18px;color:#1c3552;margin:12px 0 6px}.topic-card p{font-size:14px;color:#647b91;margin:0 0 13px;line-height:1.8}.card-more{font-size:13px;font-weight:700;color:#2aa9e0}.split{display:grid;grid-template-columns:1.08fr 1fr;gap:26px;align-items:center}.panel{padding:26px;border-radius:13px;background:white;border:1px solid rgba(42,169,224,.16)}.panel h2{font-size:24px;color:#1c3552;margin:0 0 14px}.panel p{margin:0 0 14px}.clean-list{padding-left:23px;margin:8px 0}.clean-list li{margin-bottom:10px}.clean-list a{font-weight:600}.media{display:flex;justify-content:center;align-items:center;width:100%;overflow:hidden;border-radius:12px;background:#eff8ff;border:1px solid #d9eefa}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-banner{aspect-ratio:16/7;max-height:290px}.media-wide{aspect-ratio:16/9}.media-square{aspect-ratio:1}.media-device{aspect-ratio:9/16;max-height:360px}.media-logo{aspect-ratio:4/1}.media-placeholder{display:block;width:100%;height:100%;background:linear-gradient(135deg,#eff8ff 10%,#e3f4ff 60%,#f3edfa)}.home-hero .media{max-height:250px}.article-layout{display:grid;grid-template-columns:minmax(0,800px) minmax(220px,1fr);gap:28px;align-items:start}.article{background:#fff;border-radius:14px;border:1px solid #e0eff9;padding:30px 36px;min-width:0}.article h2{font-size:23px;color:#1c3552;margin:32px 0 12px}.article h2:first-child{margin-top:0}.article p{margin:0 0 16px}.article .lead{font-size:17px;color:#315c78}.aside-box{background:#fff;border:1px solid #e0eff9;border-radius:13px;padding:20px;position:sticky;top:95px}.aside-box h2{font-size:17px;color:#1c3552;margin:0 0 12px}.aside-box a{display:block;padding:8px 0;border-bottom:1px solid #edf4f8;font-size:14px}.article-note{background:#eff8ff;border-left:3px solid #2aa9e0;padding:15px 18px;border-radius:8px;margin:24px 0}.related{margin-top:36px;padding:24px;background:#fff;border:1px solid #e0eff9;border-radius:13px}.related h2{font-size:20px;margin:0 0 16px;color:#1c3552}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related a{padding:8px 13px;border-radius:25px;background:#eff8ff;font-size:14px}.gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.gallery-card{background:white;padding:15px;border:1px solid #e1f0fa;border-radius:13px}.gallery-card h3{font-size:18px;margin:13px 3px 4px;color:#1c3552}.gallery-card p{font-size:14px;margin:0 3px 6px}.faq-list details{background:#fff;border:1px solid #e0eff9;border-radius:10px;margin-bottom:12px;padding:15px 20px}.faq-list summary{font-weight:700;cursor:pointer;color:#1c3552}.faq-list p{margin:12px 0 0}.service-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.service-grid .topic-card{padding:17px}.site-footer{background:#16324f;color:#e8f5ff;padding-top:42px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:34px}.site-footer h2,.site-footer h3{margin:0 0 12px;color:white;font-size:17px}.site-footer p{font-size:13px;line-height:1.9;color:#d5e9f7}.site-footer a{display:block;color:#dbeefa;font-size:13px;margin:0 0 9px}.site-footer a:hover{color:#7dd8ff}.footer-bottom{border-top:1px solid #ffffff20;margin-top:25px;padding-top:15px;padding-bottom:24px;display:flex;justify-content:space-between;gap:18px;font-size:13px}.footer-bottom p{margin:0}.menu-toggle,.mobile-bottom,.mobile-drawer,.drawer-mask{display:none}.back-top{position:fixed;right:20px;bottom:24px;border:0;border-radius:50%;background:#2aa9e0;color:white;width:42px;height:42px;box-shadow:0 8px 20px #16324f33;opacity:0;visibility:hidden;transition:.2s;z-index:100}.back-top.show{opacity:1;visibility:visible} @media(max-width:1100px){.desktop-nav{gap:12px}.header-inner{gap:14px}.desktop-nav a{font-size:13px}}@media(max-width:980px){.wrap{padding-left:20px;padding-right:20px}.desktop-nav{display:none}.header-inner{height:58px;justify-content:space-between;gap:12px}.brand{min-width:0;margin:auto}.brand img{max-height:29px;max-width:135px}.brand-fallback{font-size:20px}.main-btn{height:36px;min-width:68px;padding:0 12px;font-size:13px}.menu-toggle{display:flex;flex-direction:column;justify-content:center;gap:4px;width:36px;height:36px;flex:none;border:0;background:transparent;padding:7px}.menu-toggle span{display:block;width:100%;height:2px;background:#244c78}.drawer-mask{display:block;position:fixed;inset:0;background:rgba(28,73,114,.36);z-index:11000;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.drawer-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);height:100vh;height:100dvh;overflow-y:auto;background:white;z-index:12000;transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .2s,visibility .2s}.mobile-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;background:#16324f;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:12px 18px;z-index:1}.drawer-close{border:0;background:transparent;color:#fff;font-size:30px;line-height:1}.drawer-group{padding:14px 19px;border-bottom:1px solid #e9f2f9}.drawer-group h2{font-size:14px;color:#244c78;margin:0 0 9px}.drawer-group nav{display:grid;grid-template-columns:1fr 1fr;gap:6px}.drawer-group a{color:#58718e;padding:5px 2px;font-size:13px}.drawer-group a[aria-current="page"]{color:#2aa9e0;font-weight:700}body.drawer-open{overflow:hidden}.page-main{padding-bottom:100px}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;z-index:950;background:#fff;border-top:1px solid #dceef9;height:60px;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;flex-direction:column;font-size:12px;color:#58718e;line-height:1.3}.mobile-bottom a span{font-size:21px}.mobile-bottom a.active{color:#2aa9e0;font-weight:700}.back-top{bottom:76px}.article-layout{grid-template-columns:1fr}.aside-box{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}.service-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){body{font-size:15px}.wrap{padding-left:16px;padding-right:16px}.page-main{padding-top:20px}.hero{padding:24px 19px;margin-bottom:24px}.hero h1{font-size:27px}.hero p{font-size:15px}.home-hero{padding:12px}.home-hero .hero-copy{padding:14px 6px}.section{margin:28px 0}.section-heading h2,.section>h2{font-size:21px}.cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-card{padding:16px}.topic-card h3{font-size:16px}.topic-card p{font-size:13px}.split{grid-template-columns:1fr;gap:16px}.panel{padding:20px}.panel h2{font-size:20px}.article{padding:22px 19px}.article h2{font-size:20px}.article .lead{font-size:16px}.gallery-grid{grid-template-columns:1fr}.footer-grid{gap:22px}.footer-bottom{display:block}.footer-bottom p{margin-top:6px}}@media(max-width:360px){.brand-fallback{font-size:18px}.main-btn{min-width:62px;padding:0 9px}.cards{grid-template-columns:1fr}.service-grid{grid-template-columns:1fr 1fr}.service-grid .topic-card{padding:12px}.subnav-inner{gap:18px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}