*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#080A0D;color:#C7CDD5;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}a{color:inherit;text-decoration:none}a:hover{color:#8ED8FF}button{font:inherit;cursor:pointer}img{max-width:100%}.wrap{width:min(1200px,calc(100% - 48px));margin-inline:auto}.skip{position:absolute;left:-9999px;top:0}.skip:focus{left:10px;top:8px;z-index:999;color:white;background:#12161C;padding:8px}.site-header{height:74px;background:rgba(8,10,13,.96);border-bottom:1px solid rgba(255,255,255,.09);position:relative;z-index:30}.topbar{height:100%;display:grid;grid-template-columns:minmax(104px,1fr) auto minmax(104px,1fr);align-items:center;gap:8px}.menu-toggle{width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;border:1px solid rgba(255,255,255,.16);background:#12161C;border-radius:11px;color:white}.menu-toggle span{height:2px;width:20px;background:#E4E9EF;display:block}.brand{display:flex;align-items:center;justify-content:center;height:42px;white-space:nowrap;color:#F5F7FA;font-size:22px}.brand img{height:36px;width:auto;max-width:150px;object-fit:contain}.enter-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 20px;white-space:nowrap;border-radius:99px;background:#5C7CFA;color:white;font-size:14px;font-weight:700}.enter-link:hover{background:#7390FF;color:white}.channel-strip{background:#0D1015;border-bottom:1px solid rgba(255,255,255,.09)}.channel-inner{height:47px;display:flex;gap:27px;align-items:stretch;overflow-x:auto;scrollbar-width:thin}.channel-link{position:relative;flex:none;white-space:nowrap;display:flex;align-items:center;font-size:14px;color:#C7CDD5}.channel-link.is-active{color:#6EA8FF}.channel-link.is-active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:#6EA8FF}.drawer-overlay{position:fixed;inset:0;z-index:39;background:rgba(0,0,0,.62);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.drawer{position:fixed;z-index:40;top:0;left:0;bottom:0;width:420px;max-width:86vw;background:#0D1015;box-shadow:6px 0 36px rgba(0,0,0,.38);transform:translateX(-103%);visibility:hidden;pointer-events:none;transition:transform .23s,visibility .23s;display:flex;flex-direction:column}.drawer-open{overflow:hidden}.drawer-open .drawer-overlay{opacity:1;visibility:visible;pointer-events:auto}.drawer-open .drawer{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{min-height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;border-bottom:1px solid rgba(255,255,255,.09)}.drawer-brand{font-size:20px;font-weight:700;color:white}.drawer-brand img{height:36px;width:auto;object-fit:contain}.drawer-close{border:0;background:#171C23;color:#F5F7FA;width:38px;height:38px;border-radius:9px;font-size:28px;line-height:1}.drawer-body{overflow-y:auto;padding:10px 24px 32px}.drawer-group{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.09)}.drawer-group h3{font-size:13px;letter-spacing:1px;color:#9098A3;margin:0 0 10px}.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:4px}.drawer-links a{padding:8px 10px;border-left:2px solid transparent;border-radius:3px;font-size:14px}.drawer-links .is-active{color:#6EA8FF;border-left-color:#6EA8FF;background:#171C23}.page-main{min-height:55vh}.hero,.page-heading{padding-top:44px}.hero-layout{display:grid;grid-template-columns:54% 46%;gap:0;align-items:center}.hero-copy{padding:25px 30px 25px 0}.eyebrow{text-transform:uppercase;font-size:12px;font-weight:bold;letter-spacing:2px;color:#8ED8FF;margin:0 0 14px}h1,h2,h3{color:#F5F7FA;line-height:1.38}h1{font-size:34px;margin:0 0 18px;letter-spacing:.2px}h2{font-size:26px;margin:0 0 18px}h3{font-size:19px;margin:0 0 10px}p{margin:0 0 16px}.hero h1{font-size:42px}.hero .lead{font-size:17px}.hero-links,.related-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.hero-links a,.text-link{color:#8ED8FF;text-decoration:underline;text-underline-offset:4px}.section{margin-top:52px}.section-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:16px}.section-head h2{margin:0}.section-head a{font-size:14px;color:#6EA8FF}.panel,.topic-card,.article-block{border:1px solid rgba(255,255,255,.09);background:#0D1015;border-radius:14px}.panel{padding:26px}.article-block{padding:26px 28px;margin-bottom:20px}.article-block p:last-child,.panel p:last-child{margin-bottom:0}.topic-card{padding:22px}.topic-card a{color:#8ED8FF;font-size:14px}.intro,.sublead{color:#B3BBC7;max-width:850px}.page-heading{padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.09);margin-bottom:32px}.page-heading p{max-width:850px;font-size:17px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:30px;align-items:start}.content-column{min-width:0}.side-panel{position:sticky;top:20px;padding:22px;background:#12161C;border:1px solid rgba(255,255,255,.09);border-radius:14px}.side-panel a{display:block;border-bottom:1px solid rgba(255,255,255,.09);padding:10px 0;color:#8ED8FF;font-size:14px}.side-panel a:last-child{border:0}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#0D1015;border:1px solid rgba(255,255,255,.07)}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center;display:block}.media-placeholder{width:100%;height:100%;background:linear-gradient(135deg,#12161C,#171C23 55%,#0D1015)}.media-wide{aspect-ratio:16/9}.media-square{aspect-ratio:1}.media-banner{aspect-ratio:16/7}.media-device{aspect-ratio:9/16}.hero-media{height:320px}.hero-media .media{height:100%;aspect-ratio:auto}.figure-card .media{height:165px;aspect-ratio:auto}.figure-card h3{font-size:17px;margin:13px 0 5px}.figure-card p{font-size:14px;color:#A5AFBD}.article-media{max-width:700px;margin:0 auto 24px}.article-media .media{max-height:260px}.vertical-media{max-width:230px;margin-inline:auto}.vertical-media .media{max-height:360px}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:center}.list-articles{counter-reset:items}.list-item{counter-increment:items;display:grid;grid-template-columns:50px 1fr;gap:12px;border-bottom:1px solid rgba(255,255,255,.1);padding:18px 0}.list-item:before{content:counter(items,decimal-leading-zero);color:#6EA8FF;font-size:22px;font-weight:bold}.list-item h3{margin:0 0 5px}.list-item p{margin:0 0 6px;font-size:15px}.list-item a,.related-links a{color:#8ED8FF}.callout{padding:22px 24px;border-left:3px solid #5C7CFA;background:#12161C;border-radius:0 12px 12px 0}.qa{padding:20px 0;border-bottom:1px solid rgba(255,255,255,.1)}.qa h3{margin:0 0 8px}.qa p{margin:0}.site-footer{background:#050608;margin-top:65px;border-top:1px solid rgba(255,255,255,.1)}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:30px;padding:44px 0 30px}.footer-grid h3{font-size:16px;margin:0 0 12px}.footer-grid a:not(.footer-brand){display:block;font-size:14px;color:#AEB6C1;margin:6px 0}.footer-grid p{font-size:14px;color:#9098A3}.footer-brand{display:inline-flex;font-size:22px;font-weight:bold;color:white;margin-bottom:12px}.footer-brand img{height:36px;width:auto;object-fit:contain}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.09);padding:16px 0;font-size:12px;color:#9098A3}.footer-bottom p{margin:0}.category-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.category-index a{color:#8ED8FF}.banner-media .media{max-height:260px}.back-top{border:1px solid rgba(255,255,255,.16);background:#12161C;color:#E2EDFF;border-radius:10px;padding:9px 16px}.reading-note{font-size:13px;color:#9098A3;margin-top:12px}@media(max-width:980px){.wrap{width:calc(100% - 40px)}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{grid-template-columns:minmax(0,1fr) 235px;gap:20px}.hero h1{font-size:36px}.footer-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:700px){.wrap{width:calc(100% - 32px)}.site-header{height:64px}.topbar{grid-template-columns:minmax(78px,1fr) auto minmax(78px,1fr)}.menu-toggle{width:40px;height:40px}.brand{height:36px;font-size:18px}.brand img{height:28px;max-width:105px}.enter-link{height:40px;padding:0 12px;font-size:12px}.channel-inner{height:45px;gap:21px}.drawer{width:min(86vw,340px)}.drawer-head{min-height:64px;padding:0 17px}.drawer-body{padding:8px 16px 26px}.hero,.page-heading{padding-top:27px}.hero-layout{display:flex;flex-direction:column-reverse;gap:16px}.hero-copy{padding:0}.hero h1{font-size:29px}.hero .lead,.page-heading p{font-size:15px}h1{font-size:26px}h2{font-size:21px}h3{font-size:18px}.section{margin-top:34px}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.grid-2{grid-template-columns:1fr}.topic-card,.panel{padding:17px}.article-layout{display:block}.article-block{padding:19px 18px}.side-panel{position:static;margin-top:22px}.hero-media{height:200px;width:100%}.figure-card .media{height:140px}.split{display:flex;flex-direction:column;align-items:stretch;gap:14px}.split.mobile-first .visual{order:-1}.vertical-media{max-width:220px}.banner-media .media{max-height:145px}.footer-grid{gap:22px}.footer-bottom{display:block}.footer-bottom p+ p{margin-top:7px}.list-item{grid-template-columns:38px 1fr}.category-index{grid-template-columns:1fr}}@media(max-width:350px){.enter-link{padding:0 9px;font-size:11px}.brand img{max-width:90px}.grid-3{grid-template-columns:1fr}.figure-card .media{height:155px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.drawer,.drawer-overlay{transition:none}}
.nojs-nav{display:flex;flex-wrap:wrap;gap:8px 18px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.09)}.nojs-nav a{color:#8ED8FF;font-size:14px}
