:root{--bg:#EAF2FB;--blue:#137CD8;--sky:#2FA8F7;--ink:#24364F;--muted:#5D718A;--panel:#fff;--line:rgba(47,168,247,.14)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);font-size:16px;line-height:1.8}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}button{font:inherit;cursor:pointer}img{max-width:100%}.wrap{width:calc(100% - 48px);max-width:1160px;margin-inline:auto}.site-header{background:#fff;position:sticky;top:0;z-index:1000;border-bottom:1px solid var(--line)}.topbar{height:70px;display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;gap:9px;flex:none;min-width:185px;font-size:19px;font-weight:800;color:#145689;line-height:1.2}.brand img{display:block;width:auto;max-width:96px;height:37px;object-fit:contain}.brand-text small,.footer-brand small{display:block;font-size:9px;letter-spacing:1.4px;font-weight:700}.brand-letter{background:var(--blue);color:white;border-radius:9px;width:37px;height:37px;display:grid;place-items:center;font-weight:900;font-size:25px}.desktop-nav{display:flex;align-items:center;justify-content:center;gap:16px;white-space:nowrap;min-width:0;flex:1}.desktop-nav a{font-size:14px;height:70px;display:flex;align-items:center;border-bottom:2px solid transparent}.desktop-nav a.active{color:var(--blue);border-color:var(--blue)}.register,.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff!important;border:0;border-radius:999px;min-height:41px;padding:8px 20px;font-size:14px;font-weight:700;white-space:nowrap}.subnav{height:44px;background:#F7FBFF;border-top:1px solid var(--line)}.subnav-scroll{height:100%;display:flex;align-items:center;gap:0;overflow-x:auto;scrollbar-width:none}.subnav a{font-size:13px;white-space:nowrap;color:var(--muted);padding:0 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h2{color:#fff;font-size:16px;margin-bottom:14px}.footer p{font-size:14px;color:#cfdeeb}.footer a{display:block;color:#eaf6ff;font-size:14px;margin:8px 0}.footer-brand{font-weight:800!important;font-size:22px!important}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:19px 0;border-top:1px solid #31506a;font-size:12px;color:#c6d9e9}.menu-trigger,.bottom-nav,.mobile-drawer,.drawer-mask{display:none}.back-top{position:fixed;right:22px;bottom:24px;background:#137CD8;color:#fff;border:0;border-radius:50%;height:42px;width:42px;opacity:0;pointer-events:none;transition:opacity .2s}.back-top.visible{opacity:1;pointer-events:auto}.image-text{display:grid;grid-template-columns:1.45fr .7fr;align-items:center;gap:25px}.image-text>.media{max-height:340px;justify-self:center;width:min(100%,250px)}.faq-item{border-bottom:1px solid var(--line);padding:17px 0}.faq-item h2{font-size:19px;margin-bottom:8px}.faq-item:last-child{border:0}
@media(max-width:1100px){.desktop-nav{gap:10px}.brand{min-width:165px;font-size:17px}.topbar{gap:12px}}
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@media(max-width:600px){.wrap{width:calc(100% - 32px)}.brand{font-size:15px;gap:5px}.brand img{max-width:62px}.brand-text small{font-size:7px;letter-spacing:.4px}.register{font-size:12px;padding:6px 10px}.topbar{gap:3px}.hero{grid-template-columns:minmax(0,1fr)}.hero .media{grid-row:1;height:180px}.hero-copy{padding:22px}.hero h1{font-size:27px}.hero .intro{font-size:15px}.main-content{padding-bottom:38px}h1{font-size:26px}h2{font-size:21px}.panel,.article{padding:21px 19px}.grid{gap:12px}.grid.two,.reading-layout{grid-template-columns:minmax(0,1fr)}.feature,.mini-card{padding:16px}.feature h3{font-size:17px}.feature p{font-size:14px}.section-title{margin:26px 0 14px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.footer-bottom{flex-direction:column;gap:4px}.image-text{grid-template-columns:minmax(0,1fr)}.image-text>.media{grid-row:1;max-height:260px}.brands .media{height:94px}.brands .feature{padding:10px}.visual-card .media{max-height:160px}}
@media(max-width:350px){.brand img{max-width:48px}.brand-text{font-size:14px}.register{padding:5px 8px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature{padding:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}