*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F4FBFF;color:#223044;font:16px/1.75 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:#0877C9;text-decoration:none;touch-action:manipulation}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer;touch-action:manipulation}img{max-width:100%}.container{max-width:1160px;width:calc(100% - 40px);margin-inline:auto}.skip-link{position:absolute;top:-70px;left:10px;z-index:20000;background:#fff;padding:10px}.skip-link:focus{top:8px}.site-header{background:#FFFFFF;position:sticky;top:0;z-index:1000;box-shadow:0 1px 12px rgba(8,42,70,.08)}.header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}.header-logo{flex:0 0 auto;display:flex;align-items:center}.logo-lockup{display:inline-flex;align-items:center;color:#0877C9;font-size:23px;white-space:nowrap}.logo-lockup img{height:36px;width:auto;max-width:180px;object-fit:contain}.desktop-nav{display:flex;align-items:center;justify-content:center;gap:clamp(11px,2.1vw,29px);flex:1;white-space:nowrap;min-width:0}.desktop-nav a{display:flex;align-items:center;min-height:52px;border-bottom:2px solid transparent;font-size:15px;font-weight:700;color:#223044}.desktop-nav a.active{color:#0877C9;border-bottom-color:#1CA8F6}.register-btn{display:inline-flex;align-items:center;justify-content:center;min-width:92px;min-height:42px;padding:5px 20px;border-radius:99px;background:linear-gradient(135deg,#38C7FF 0%,#1CA8F6 48%,#0877C9 100%);font-weight:700;color:#fff;box-shadow:0 4px 14px rgba(28,168,246,.18);flex:0 0 auto}.register-btn:hover{color:#fff;text-decoration:none;filter:brightness(.97)}.menu-toggle{display:none}.mobile-drawer,.drawer-mask{display:none}.site-main{padding-top:34px;padding-bottom:62px;min-height:62vh}.hero-title{max-width:830px;margin:0 auto 25px;text-align:center}.eyebrow{color:#0877C9;font-size:14px;font-weight:700;letter-spacing:.12em}.hero-title h1,.page-intro h1{font-size:clamp(28px,3.3vw,38px);line-height:1.3;color:#0877C9;margin:10px 0 16px}.hero-title p,.page-intro p{color:#5F7082;margin:0}.poster-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:26px 0}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#EAF7FF;aspect-ratio:16/9}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media-placeholder{display:block;position:absolute;inset:0;background:linear-gradient(145deg,#EAF7FF,#DDEFFF)}.poster-grid .media{height:clamp(220px,24vw,290px);aspect-ratio:auto}.media.wide-media{height:clamp(200px,23vw,245px);aspect-ratio:auto}.section{margin:30px 0}.section h2{color:#0877C9;font-size:25px;line-height:1.4;margin:0 0 13px}.section h3,.card h3{font-size:19px;line-height:1.45;margin:0 0 9px;color:#0877C9}.section p,.card p{margin:0 0 14px}.card,.page-intro,.note-panel{background:#fff;border:1px solid #E1F0F8;border-radius:18px;padding:24px;box-shadow:0 4px 18px rgba(8,42,70,.035)}.page-intro{padding:30px;margin-bottom:24px}.three-cards,.two-cards,.brand-grid,.article-grid{display:grid;gap:18px;grid-template-columns:repeat(3,minmax(0,1fr))}.two-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.brand-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.brand-card{min-width:0}.brand-card .media{margin-bottom:14px}.brand-card h3{margin-bottom:8px}.brand-card p{font-size:15px;color:#5F7082}.channel-strip{background:#EAF7FF;border-radius:16px;padding:15px 20px;display:flex;flex-wrap:wrap;gap:8px 20px;margin:22px 0}.channel-strip a{font-weight:700}.text-link{font-weight:700;border-bottom:1px solid #88D7FF}.reading-list{padding-left:24px}.reading-list li{padding:6px 0}.answer{padding:20px 0;border-bottom:1px solid #DFEDF5}.answer:last-child{border-bottom:0}.answer h3{margin:0 0 8px;color:#0877C9;font-size:19px}.answer p{margin:0}.article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.site-footer{background:#082A46;color:#EAF8FF;padding:38px 0 20px}.footer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.site-footer h2{font-size:17px;color:#fff;margin:0 0 12px}.site-footer a{color:#EAF8FF;display:block;min-height:35px}.footer-bottom{margin-top:24px;padding-top:20px;border-top:1px solid rgba(234,248,255,.2);display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;font-size:13px}.footer-bottom p{margin:0}.footer-logo img{height:32px}.footer-logo strong{color:#EAF8FF}.mobile-bottom{display:none}.back-top{position:fixed;right:19px;bottom:26px;width:42px;height:42px;background:#0877C9;color:#fff;border:0;border-radius:50%;display:none;z-index:900}.back-top.shown{display:block}.media-pair{display:grid;grid-template-columns:1.25fr 1fr;gap:20px;align-items:center}.fineprint{font-size:14px;color:#5F7082}.mobile-drawer,.drawer-mask{display:none}
@media(max-width:980px){
.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#fff;color:#223044;z-index:12000;transform:translateX(-105%);transition:transform .2s ease}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-mask{display:none;position:fixed;inset:0;background:rgba(8,42,70,.42);z-index:11000;opacity:0;pointer-events:none}
.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}
.header-inner{min-height:62px;display:grid;grid-template-columns:72px minmax(0,1fr) 72px;gap:8px}.menu-toggle{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:5px;width:44px;height:44px;background:none;border:0}.menu-toggle span{height:2px;width:22px;background:#0877C9;border-radius:5px}.header-logo{justify-content:center;min-width:0}.logo-lockup{font-size:20px}.logo-lockup img{height:28px;max-width:min(45vw,150px)}.desktop-nav{display:none}.header-register{min-width:72px;min-height:36px;padding:4px 12px;font-size:14px}.drawer-top{min-height:67px;display:flex;align-items:center;justify-content:space-between;padding:12px 18px;border-bottom:1px solid #E1F0F8}.drawer-close{width:40px;height:40px;background:#EAF7FF;border:0;border-radius:50%;color:#0877C9;font-size:28px;line-height:1}.mobile-drawer nav{height:calc(100dvh - 67px);overflow-y:auto;padding:10px 18px 26px}.drawer-group{padding:8px 0;border-bottom:1px solid #E1F0F8}.drawer-group strong{display:block;color:#0877C9;font-size:13px;margin:6px 0}.drawer-group a{display:block;color:#223044;min-height:40px;padding:7px 4px}.site-main{padding-top:24px;padding-bottom:90px}.three-cards,.brand-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mobile-bottom{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid #DCEFF9;z-index:1000;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{color:#223044;text-align:center;padding:11px 2px;min-height:52px;font-size:14px;font-weight:700}.mobile-bottom a.active{color:#0877C9}.back-top{bottom:78px}.poster-grid .media{height:190px}.footer-bottom{padding-bottom:52px}
}
@media(max-width:640px){.container{width:calc(100% - 28px)}.hero-title h1,.page-intro h1{font-size:29px}.hero-title{margin-bottom:18px}.page-intro{padding:22px 18px}.section h2{font-size:22px}.poster-grid{gap:10px;grid-template-columns:1fr}.poster-grid .media{height:160px}.three-cards,.two-cards,.brand-grid,.article-grid,.footer-grid,.media-pair{grid-template-columns:1fr}.card{padding:19px}.media.wide-media{height:160px}.channel-strip{gap:5px 15px}.site-footer{padding-top:28px}.footer-grid{gap:15px}.footer-bottom{display:block}.footer-bottom>*{margin-bottom:12px!important}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.mobile-drawer{transition:none}}