*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f6fbff;color:#31485f;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}a{color:#244c78;text-decoration:none}a:hover{color:#2aa9e0}button{font:inherit;cursor:pointer}img{max-width:100%}.container{width:min(1160px,calc(100% - 48px));margin-inline:auto}.site-header{position:sticky;top:0;background:#fff;z-index:1000;box-shadow:0 2px 15px #244c7812}.nav-wrap{height:70px;display:flex;align-items:center;gap:22px}.brand{flex:none;display:flex;align-items:center}.brand img{width:auto;height:36px;object-fit:contain}.brand-text{font-size:25px;font-weight:900;color:#244c78}.brand-text span{color:#6b4faf}.desktop-nav{display:flex;align-items:center;gap:18px;flex:1;justify-content:center}.desktop-nav a{font-size:14px;font-weight:700;white-space:nowrap;line-height:68px;border-bottom:2px solid transparent}.desktop-nav a.active{color:#2aa9e0;border-color:#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!important;font-weight:700;white-space:nowrap}.channel-bar{background:#eff8ff;border-bottom:1px solid #dbeefa}.channel-inner{height:44px;display:flex;gap:28px;align-items:center;overflow-x:auto;scrollbar-width:thin}.channel-inner a{font-size:14px;white-space:nowrap;color:#58718e}.channel-inner a.active{color:#2aa9e0;font-weight:bold}.site-main{padding:30px 0 62px}.hero,.article-hero,.panel,.tile,.article-section,.callout,.feature{background:#fff;border:1px solid #dcedf7;border-radius:14px;box-shadow:0 6px 20px #2b88b008}.hero,.article-hero{padding:30px;margin-bottom:26px}.hero h1{font-size:36px}.article-hero h1{font-size:32px}.hero h1,.article-hero h1,h2,h3{line-height:1.38;color:#1c3552}.hero p,.article-hero p{max-width:800px}.kicker{color:#2aa9e0!important;font-size:14px;font-weight:700;letter-spacing:.08em}.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:15px;margin:30px 0 16px}.section-head h2{margin:0;font-size:25px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.tile,.panel,.feature{padding:22px;min-width:0}.tile h3{font-size:19px;margin:0 0 10px}.tile p{margin:0 0 12px}.tile a.readmore,.readmore{font-weight:700;color:#228ebd}.media{display:flex;justify-content:center;align-items:center;width:100%;overflow:hidden;border-radius:12px;background:#eff8ff;margin:12px 0 20px}.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}.media-wide{aspect-ratio:16/9}.media-square{aspect-ratio:1}.media-device{aspect-ratio:9/16;max-width:270px}.media-placeholder{background:linear-gradient(130deg,#eff8ff,#e3f4ff);min-height:115px}.placeholder-symbol{font-size:35px;color:#83bce3}.split{display:grid;grid-template-columns:1.15fr 1fr;gap:26px;align-items:center}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:24px;align-items:start}.article-main{min-width:0}.article-section{padding:25px 30px;margin-bottom:22px}.article-section h2{font-size:24px;margin-top:0}.article-section p{margin:0 0 16px}.article-section p:last-child{margin-bottom:0}.sidebar{position:sticky;top:134px}.sidebar .panel{margin-bottom:16px}.sidebar a,.link-list a{display:block;padding:6px 0;border-bottom:1px solid #e8f3fa}.sidebar a:last-child,.link-list a:last-child{border:0}.notice{background:#eff8ff;border-left:4px solid #2aa9e0;padding:15px 20px;border-radius:8px;margin:20px 0}.site-footer{background:#16324f;color:#e8f5ff}.site-footer h2,.site-footer h3{color:#fff}.footer-grid{padding:40px 0;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}.site-footer a{color:#e8f5ff;display:block;padding:3px 0;font-size:14px}.footer-bottom{border-top:1px solid #ffffff22;padding:18px 0 28px;display:flex;gap:18px;flex-wrap:wrap;font-size:13px}.menu-toggle,.mobile-bottom,.mobile-drawer,.drawer-mask{display:none}.pill{display:inline-block;padding:5px 12px;background:#eff8ff;border-radius:30px;color:#244c78;margin:3px}.faq-item{border-bottom:1px solid #e4eff7;padding:14px 0}.faq-item h3{font-size:18px;margin:0 0 7px}.faq-item p{margin:0}.numbered{counter-reset:reading}.numbered .tile{counter-increment:reading}.numbered .tile h3:before{content:counter(reading,decimal-leading-zero) '  ';color:#2aa9e0}.mobile-bottom{z-index:900}.drawer-group{padding:5px 22px 17px}.drawer-group h2{font-size:16px;color:#2aa9e0}.drawer-group a{display:block;padding:7px 4px;border-bottom:1px solid #eff8ff}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 22px;border-bottom:1px solid #dcecf6}.drawer-close{border:0;background:none;font-size:30px;color:#244c78}a:focus-visible,button:focus-visible{outline:3px solid #2aa9e0;outline-offset:3px}@media(max-width:980px){.container{width:calc(100% - 40px)}.nav-wrap{height:58px;justify-content:space-between}.desktop-nav{display:none}.menu-toggle{display:block;border:0;background:none;font-size:24px;color:#244c78;padding:0 5px}.brand img{height:28px}.main-btn{height:36px;min-width:72px;padding:0 12px}.site-main{padding-bottom:105px}.mobile-bottom{position:fixed;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(4,1fr);height:60px;background:#fff;box-shadow:0 -2px 12px #244c781a}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:14px}.mobile-bottom a.active{color:#2aa9e0;font-weight:700}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);height:100dvh;overflow-y:auto;background:#fff;z-index:12000;transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .2s ease,visibility .2s}.mobile-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-mask{display:block;position:fixed;inset:0;background:#1c49725c;z-index:11000;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s}.drawer-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}body.drawer-open{overflow:hidden}.footer-grid{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:1fr}.sidebar{position:static}.sidebar .panel{display:none}.sidebar .panel:last-child{display:block}}@media(max-width:680px){.container{width:calc(100% - 32px)}body{font-size:15px}.hero,.article-hero{padding:21px}.hero h1{font-size:28px}.article-hero h1{font-size:25px}.grid,.grid.two,.split{grid-template-columns:1fr}.grid.categories{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.grid.categories .tile{padding:15px}.grid.categories h3{font-size:16px}.tile,.panel{padding:18px}.article-section{padding:22px 19px}.article-section h2{font-size:21px}.section-head h2{font-size:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:18px}.footer-grid>div:first-child{grid-column:1/-1}.channel-inner{gap:20px}.media-device{max-width:230px}}@media(max-width:360px){.brand-text{font-size:20px}.grid.categories{grid-template-columns:1fr 1fr}.main-btn{min-width:63px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}