*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#eaf2fb;color:#24364f;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}a{color:#137cd8;text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}img{max-width:100%}.wrap{width:min(1160px,calc(100% - 48px));margin-inline:auto}.site-header{background:#fff;position:sticky;top:0;z-index:1000;border-bottom:1px solid #e9f0f8}.header-main{height:70px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;flex:none;min-width:158px;color:#137cd8;font-weight:800;font-size:23px;white-space:nowrap}.brand-logo{display:block;max-width:170px}.brand-text{white-space:nowrap}.media-logo{width:auto;max-width:175px;min-width:80px;height:40px;min-height:0;background:transparent;border:0}.media-logo img{max-height:38px}.desktop-nav{display:flex;align-items:center;gap:23px;flex:1;white-space:nowrap}.desktop-nav a{height:70px;display:flex;align-items:center;color:#24364f;font-size:14px;border-bottom:2px solid transparent}.desktop-nav .active{color:#137cd8;border-color:#137cd8}.register-btn,.btn{display:inline-flex;justify-content:center;align-items:center;border-radius:999px;background:#137cd8;color:#fff;min-height:42px;padding:0 22px;font-weight:700;font-size:14px;white-space:nowrap}.register-btn:hover,.btn:hover{color:#fff;background:#0763b7;text-decoration:none}.subnav{background:#f7fbff;border-bottom:1px solid #e0edf9}.subnav-inner{height:44px;display:flex;align-items:center;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.subnav a{padding:0 17px;font-size:14px;color:#5d718a;line-height:1;border-right:1px solid #dce8f3;flex:none}.subnav a:first-child{padding-left:0}.subnav a.active{color:#137cd8;font-weight:700}.main-content{padding:34px 0 48px}.panel,.card,.article-shell{background:#fff;border:1px solid rgba(47,168,247,.14);border-radius:12px;box-shadow:0 6px 22px rgba(21,67,107,.035)}.panel{padding:28px}.section{margin-top:38px}.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:18px}.section-head h2,.section h2{color:#173c60;font-size:24px;line-height:1.35;margin:0 0 17px}.section-head h2{margin:0}.section-head a{font-size:14px}.eyebrow{font-size:13px;font-weight:700;color:#137cd8;letter-spacing:.08em}.hero{display:grid;grid-template-columns:54fr 46fr;gap:25px;align-items:center;padding:27px}.hero-copy h1{font-size:37px;line-height:1.32;margin:13px 0;color:#173c60}.hero-copy p{color:#5d718a}.hero-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.hero-links a:not(.btn){padding:8px 12px;background:#edf5ff;border-radius:9px}.media{display:flex;align-items:center;justify-content:center;background:#edf5ff;border-radius:12px;overflow:hidden;width:100%;min-width:0;border:1px solid #e3f0fd}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-placeholder{height:100%;width:100%;min-height:70px;background:linear-gradient(135deg,#edf5ff,#f7fbff)}.media-wide{aspect-ratio:16/9}.media-banner{aspect-ratio:16/7}.media-square{aspect-ratio:1/1}.media-portrait{aspect-ratio:3/4}.media-device{aspect-ratio:9/16;max-width:260px;margin:auto}.media-natural img{width:100%;height:auto;max-height:280px}.media-logo{background:transparent;border:0}.hero .media{max-height:290px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid-two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-four{grid-template-columns:repeat(4,minmax(0,1fr))}.card{padding:22px;min-width:0}.card h3{font-size:18px;color:#173c60;line-height:1.4;margin:0 0 10px}.card p{font-size:15px;margin:0 0 12px;color:#52677e}.card .more{font-weight:700;font-size:14px}.split{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);gap:18px}.read-list{margin:0;padding:0;list-style:none;counter-reset:reading}.read-list li{counter-increment:reading;border-bottom:1px solid #e4eff8;padding:14px 0;display:flex;gap:14px}.read-list li:before{content:counter(reading,decimal-leading-zero);font-weight:700;color:#2fa8f7}.read-list li:last-child{border:0}.read-list strong{display:block;color:#24364f}.read-list p{font-size:14px;margin:3px 0;color:#5d718a}.article-layout{display:grid;grid-template-columns:minmax(0,820px) minmax(220px,1fr);gap:22px;align-items:start}.article-shell{padding:34px}.article-shell h1{font-size:32px;line-height:1.32;color:#173c60;margin:10px 0 20px}.article-shell h2{font-size:23px;color:#173c60;line-height:1.4;margin:32px 0 12px}.article-shell h3{font-size:18px;color:#173c60}.article-shell p{line-height:1.83;margin:0 0 17px}.article-shell .lead{font-size:17px;color:#52677e}.aside-card{position:sticky;top:102px}.aside-card h2{font-size:19px;color:#173c60;margin:0 0 14px}.aside-card a{display:block;border-bottom:1px solid #e7f0fa;padding:9px 0;font-size:14px}.aside-card a:last-child{border:0}.tagline{display:block;font-size:13px;color:#137cd8;font-weight:bold}.article-media{max-width:630px;margin:20px auto}.article-media .media{max-height:340px}.small-muted{font-size:13px;color:#5d718a}.brand-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.brand-card{padding:14px;display:flex;gap:12px;align-items:center}.brand-card .media{width:105px;height:105px;flex:none;aspect-ratio:1}.brand-card .media img{max-height:100px}.brand-card h3{margin:0 0 5px;font-size:16px}.brand-card p{margin:0;color:#5d718a;font-size:13px}.gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.gallery-item{padding:16px}.gallery-item h3{font-size:17px;margin:12px 0 6px;color:#173c60}.gallery-item p{font-size:14px;margin:0;color:#5d718a}.mobile-banner{display:grid;grid-template-columns:1.6fr 1fr;gap:22px;align-items:center}.mobile-banner .media{max-height:320px}.qa{padding-bottom:16px;border-bottom:1px solid #e2edf8;margin-bottom:20px}.qa h2{font-size:19px!important;margin:0 0 7px!important}.qa p{margin:0!important}.site-footer{background:#102b46;color:#eaf6ff;padding:42px 0 22px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px}.footer-grid h2{font-size:17px;margin:0 0 12px}.footer-grid a{display:block;color:#eaf6ff;font-size:14px;margin:5px 0}.footer-brand{font-weight:800;font-size:22px!important}.footer-intro p{font-size:14px;color:#c2d9ed}.footer-bottom{margin-top:30px;border-top:1px solid #33526b;padding-top:15px;display:flex;justify-content:space-between;gap:12px;font-size:12px;color:#d0e2f1}.footer-bottom p{margin:0}.menu-toggle,.mobile-bottom,.mobile-drawer,.drawer-mask{display:none}.back-top{position:fixed;right:20px;bottom:24px;width:40px;height:40px;border:0;border-radius:50%;background:#137cd8;color:white;opacity:0;pointer-events:none;transition:opacity .2s;z-index:500}.back-top.visible{opacity:1;pointer-events:auto}a:focus-visible,button:focus-visible{outline:3px solid #45c7ff;outline-offset:2px}
@media(max-width:1100px){.desktop-nav{gap:14px}.brand{min-width:120px}.brand-logo{max-width:135px}.header-main{gap:16px}}
@media(max-width:980px){.wrap{width:min(100% - 40px,1160px)}.desktop-nav{display:none}.header-main{height:58px;justify-content:space-between;gap:12px}.brand{min-width:0;margin-right:auto;font-size:21px}.brand-logo{max-width:132px}.media-logo{height:32px}.media-logo img{max-height:30px}.register-btn{height:36px;min-height:36px;padding:0 15px}.menu-toggle{display:flex;width:40px;height:42px;padding:11px 8px;border:0;background:none;flex-direction:column;justify-content:space-between;flex:none}.menu-toggle span{display:block;background:#24364f;height:2px;width:24px}.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:rgba(16,43,70,.38);z-index:11000;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,visibility .18s}.drawer-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}body.drawer-open{overflow:hidden}.drawer-head{position:sticky;top:0;z-index:1;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:12px 18px;border-bottom:1px solid #e8f0f7;font-weight:700}.drawer-head button{border:0;background:none;font-size:29px;line-height:1}.drawer-group{padding:12px 18px}.drawer-group h2{font-size:14px;color:#5d718a;margin:4px 0 5px}.drawer-group a{display:block;min-height:42px;padding:8px 5px;color:#24364f}.drawer-group a.active{color:#137cd8;font-weight:bold}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;min-height:60px;background:#fff;border-top:1px solid #deecf7;z-index:950;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;color:#5d718a;font-size:14px}.mobile-bottom a.active{color:#137cd8;font-weight:bold}.site-footer{padding-bottom:calc(80px + env(safe-area-inset-bottom))}.back-top{bottom:80px}.article-layout{grid-template-columns:minmax(0,1fr)}.aside-card{position:static}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.brand-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.wrap{width:calc(100% - 32px)}body{font-size:15px}.main-content{padding:20px 0 28px}.panel{padding:19px}.hero{display:flex;flex-direction:column-reverse;align-items:stretch;gap:14px;padding:18px}.hero-copy h1{font-size:27px}.hero .media{max-height:195px}.hero-links{margin-top:15px}.section{margin-top:26px}.section-head h2,.section h2{font-size:21px}.grid{gap:11px}.grid .card{padding:15px}.card h3{font-size:16px}.card p{font-size:14px}.split,.mobile-banner{grid-template-columns:minmax(0,1fr)}.article-shell{padding:22px 19px}.article-shell h1{font-size:26px}.article-shell h2{font-size:21px}.article-shell .lead{font-size:16px}.gallery-grid{gap:11px}.gallery-item{padding:10px}.gallery-item h3{font-size:15px}.gallery-item p{font-size:13px}.brand-grid{gap:9px}.brand-card{display:block;padding:9px}.brand-card .media{width:100%;height:auto;max-height:120px;aspect-ratio:1.3}.brand-card h3{font-size:15px;margin-top:6px}.brand-card p{font-size:12px}.footer-grid{gap:21px}.footer-bottom{display:block}.footer-bottom p{margin-bottom:8px}.mobile-banner .media{max-height:260px}}
@media(max-width:350px){.brand{font-size:19px}.brand-logo{max-width:118px}.register-btn{padding:0 11px;font-size:13px}.header-main{gap:6px}.grid{grid-template-columns:minmax(0,1fr)}.gallery-grid{grid-template-columns:minmax(0,1fr)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}