*{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}img,svg{max-width:100%}a{color:#0877C9;text-underline-offset:3px;touch-action:manipulation}button{font:inherit;cursor:pointer}h1,h2,h3{color:#0877C9;line-height:1.35}h1{font-size:36px;letter-spacing:-.5px;margin:12px 0 18px}h2{font-size:24px;margin:0 0 18px}h3{font-size:19px;margin:0 0 9px}p{margin:0 0 17px}a:hover{color:#1CA8F6}.shell{width:min(calc(100% - 40px),1160px);margin-inline:auto}.site-header{background:#fff;box-shadow:0 2px 14px rgba(10,87,131,.07);position:relative;z-index:50}.header-inner{display:flex;align-items:center;gap:24px;height:78px;min-width:0}.brand{display:inline-flex;align-items:center;justify-content:flex-start;flex-shrink:0;text-decoration:none;color:#0877C9;min-width:148px}.brand img{height:36px;width:auto;max-width:160px;object-fit:contain}.brand strong{font-size:23px;white-space:nowrap}.main-nav{display:flex;align-items:center;justify-content:center;flex:1;min-width:0;gap:clamp(12px,2vw,29px);white-space:nowrap}.main-nav a{text-decoration:none;color:#223044;font-size:15px;font-weight:600;height:78px;display:flex;align-items:center;border-bottom:2px solid transparent}.main-nav a.active{color:#0877C9;border-color:#1CA8F6}.registration{margin-left:auto;display:inline-flex;align-items:center;justify-content:center;min-width:94px;height:42px;padding:0 21px;border-radius:999px;text-decoration:none;color:#fff!important;background:linear-gradient(135deg,#38C7FF 0%,#1CA8F6 48%,#0877C9 100%);font-weight:700;white-space:nowrap;box-shadow:0 6px 14px rgba(28,168,246,.17)}.registration:hover{filter:brightness(.97)}.main-content{padding-block:34px 80px;min-height:60vh}.page-intro{max-width:850px;padding:25px 0 26px}.page-intro p{font-size:17px;color:#5F7082}.eyebrow{color:#0877C9;font-weight:700;font-size:13px;letter-spacing:1px}.reading-section,.card,.question-card{border:1px solid #dbeefa;background:#fff;border-radius:18px;padding:26px 30px;box-shadow:0 7px 22px rgba(35,116,163,.045)}.reading-section{margin:20px 0}.reading-section p:last-child,.card p:last-child{margin-bottom:0}.reading-section a,.card a{font-weight:600}.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-empty{display:grid;place-items:center}.media-symbol{display:block;width:58px;height:44px;border:2px solid #b5dcf2;border-radius:10px;position:relative;opacity:.72}.media-symbol:after{content:"";position:absolute;left:12px;bottom:9px;width:27px;height:18px;background:#b5dcf2;clip-path:polygon(0 100%,42% 20%,62% 65%,80% 40%,100% 100%)}.media.wide{height:250px;aspect-ratio:auto}.media.poster{height:270px;aspect-ratio:auto}.media.brand-media{height:150px;aspect-ratio:auto}.poster-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin:16px 0 30px}.category-grid,.brand-preview,.question-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.card h2{font-size:22px}.card p{color:#5F7082}.card .more{display:inline-block;margin-top:6px}.strip{display:flex;gap:18px;flex-wrap:wrap;background:#EAF7FF;padding:16px 22px;border-radius:14px;margin:24px 0}.strip a{text-decoration:none;font-weight:700}.brand-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.brand-card{background:#fff;border:1px solid #dbeefa;border-radius:18px;padding:20px;min-width:0}.brand-card h2{font-size:20px}.brand-card p{margin-top:12px}.note{border-left:4px solid #1CA8F6;background:#EAF7FF;padding:15px 22px;border-radius:10px;margin:24px 0}.related-links{background:#EAF7FF;border-radius:12px;padding:18px 22px;margin:30px 0}.related-links a{white-space:nowrap}.article-stack{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.article-stack .reading-section{margin:0}.question-stack .reading-section{margin:14px 0}.site-footer{background:#082A46;color:#EAF8FF;padding:44px 0 24px}.footer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}.footer-grid h2{color:#EAF8FF;font-size:18px}.footer-grid a{display:block;color:#EAF8FF;text-decoration:none;min-height:35px}.footer-grid a:hover{text-decoration:underline}.footer-bottom{border-top:1px solid rgba(234,248,255,.22);padding-top:20px;margin-top:28px;font-size:14px}.footer-bottom p{margin:0 0 5px}.mobile-bottom,.menu-toggle,.drawer-close,.back-top{display:none}.skip-link{position:absolute;left:-9999px;top:0;background:#fff;z-index:20000}.skip-link:focus{left:8px}.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}
body.drawer-open{overflow:hidden}.header-inner{height:66px;display:grid;grid-template-columns:80px minmax(0,1fr) 80px;gap:5px}.main-nav{display:none}.menu-toggle{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:5px;width:42px;height:42px;background:none;border:0;padding:7px}.menu-toggle span{display:block;width:22px;height:2px;background:#0877C9}.header-inner .brand{min-width:0;justify-content:center}.header-inner .brand img{height:28px;max-width:100%}.header-inner .brand strong{font-size:20px}.registration{min-width:72px;height:36px;padding:0 11px;margin:0;justify-self:end}.drawer-head{height:74px;border-bottom:1px solid #e6f1f9;display:flex;align-items:center;justify-content:space-between;padding:0 18px}.drawer-head .brand{min-width:0}.drawer-head .brand img{height:28px}.drawer-close{display:block;background:none;border:0;color:#223044;font-size:30px;width:42px;height:42px}.mobile-drawer nav{height:calc(100% - 74px);overflow-y:auto;overscroll-behavior:contain;padding:14px 19px 38px}.mobile-drawer nav strong{display:block;color:#0877C9;margin:14px 0 5px}.mobile-drawer nav a{display:block;min-height:40px;padding:7px 8px;color:#223044;text-decoration:none;border-radius:8px}.mobile-drawer nav a:hover{background:#EAF7FF}.mobile-bottom{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));position:fixed;bottom:0;left:0;right:0;background:#fff;box-shadow:0 -2px 16px rgba(7,80,120,.14);z-index:100;padding-bottom:env(safe-area-inset-bottom,0px);height:calc(60px + env(safe-area-inset-bottom,0px))}.mobile-bottom a{display:flex;align-items:center;justify-content:center;text-decoration:none;color:#0877C9;font-weight:700;min-height:40px}.mobile-bottom a:last-child{background:#0877C9;color:#fff}.back-top{display:flex;align-items:center;justify-content:center;border:none;border-radius:50%;background:#0877C9;color:#fff;position:fixed;right:15px;bottom:calc(76px + env(safe-area-inset-bottom,0px));width:40px;height:40px;z-index:80;box-shadow:0 5px 16px #0877c944}.main-content{padding-bottom:95px}.poster-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.media.poster{height:180px}.category-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.card{padding:19px}.card h2{font-size:19px}}
@media(max-width:680px){.shell{width:calc(100% - 28px)}body{font-size:16px}h1{font-size:30px}h2{font-size:22px}.main-content{padding-top:16px}.page-intro{padding:18px 0}.page-intro p{font-size:16px}.reading-section,.question-card{padding:21px 18px}.poster-grid{grid-template-columns:1fr;gap:12px}.media.poster{height:165px}.media.wide{height:160px}.media.brand-media{height:145px}.category-grid,.brand-preview,.question-grid,.brand-list,.article-stack{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-grid>div:last-child{grid-column:1 / -1}.footer-grid a{font-size:14px}.brand-card{padding:17px}.strip{gap:12px}}
@media(max-width:390px){.header-inner{grid-template-columns:55px minmax(0,1fr) 72px}.brand strong{font-size:18px!important}.registration{min-width:72px}.media.poster{height:155px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.mobile-drawer{transition:none}}