*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#080A0D;color:#C7CDD5;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}a{color:#8ED8FF;text-decoration:none}a:hover{color:#fff;text-decoration:underline}button{font:inherit;cursor:pointer}h1,h2,h3{color:#F5F7FA;line-height:1.35;margin:0 0 18px}h1{font-size:34px}h2{font-size:26px}h3{font-size:20px}p{margin:0 0 16px}img{max-width:100%;height:auto}.container{width:min(100% - 48px,1200px);margin-inline:auto;min-width:0}.skip{position:absolute;top:-100px;z-index:150;background:#171C23;padding:8px 16px}.skip:focus{top:8px}.site-header{position:relative;z-index:20;background:rgba(8,10,13,.96)}.topbar{height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:relative;border-bottom:1px solid rgba(255,255,255,.09)}.menu-toggle{width:44px;height:44px;background:transparent;border:1px solid #303640;border-radius:10px;display:grid;align-content:center;justify-items:center;gap:5px;color:#fff}.menu-toggle span{display:block;width:20px;height:2px;background:#C7CDD5}.center-brand{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:block;max-width:38%}.media-logo{height:36px;display:flex;justify-content:center;align-items:center;background:transparent!important;min-width:100px}.media-logo img{width:auto;height:auto;max-height:36px;object-fit:contain}.enter-link{display:inline-flex;justify-content:center;align-items:center;background:#5C7CFA;color:white;border-radius:100px;height:42px;padding:0 19px;font-size:14px;font-weight:bold}.enter-link:hover{background:#6EA8FF;text-decoration:none}.channel-bar{background:#0D1015;overflow-x:auto;max-width:100%;scrollbar-width:thin}.channel-inner{min-width:max-content;max-width:1200px;margin:auto;display:flex;justify-content:space-around;gap:12px;padding:0 24px;height:48px}.nav-link{font-size:14px;white-space:nowrap;display:flex;align-items:center;color:#C7CDD5;border-bottom:2px solid transparent;padding:0 10px}.nav-link.active{color:#6EA8FF;border-bottom-color:#6EA8FF}.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.65);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.site-drawer{position:fixed;top:0;bottom:0;left:0;width:min(86vw,420px);background:#0D1015;z-index:90;overflow-y:auto;padding:24px;transform:translateX(-100%);visibility:hidden;pointer-events:none;transition:transform .2s,visibility .2s;box-shadow:12px 0 36px #0007}.drawer-open .drawer-mask{opacity:1;visibility:visible;pointer-events:auto}.drawer-open .site-drawer{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-open{overflow:hidden}.drawer-head{display:flex;justify-content:space-between;align-items:center}.drawer-head button{border:1px solid #454B55;background:#171C23;color:#fff;font-size:24px;width:40px;height:40px;border-radius:8px}.drawer-intro{color:#9098A3;font-size:14px;margin:14px 0}.drawer-group{border-top:1px solid #2B3038;padding:18px 0 10px}.drawer-group h2{color:#9098A3;font-size:14px;margin:0 0 10px}.drawer-link{display:inline-block;color:#C7CDD5;font-size:15px;padding:5px 11px 5px 0;margin-right:9px}.drawer-link.active{color:#6EA8FF;border-left:2px solid #6EA8FF;padding-left:9px}.site-main{min-height:60vh}.hero,.split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);align-items:center;gap:32px}.hero{padding:45px 0}.hero h1{font-size:40px}.eyebrow{display:block;letter-spacing:.13em;color:#8ED8FF;font-size:13px;margin-bottom:10px}.lead{font-size:17px;color:#C7CDD5;max-width:820px}.hero-links,.text-links{display:flex;gap:12px 25px;flex-wrap:wrap;margin-top:14px}.hero-links a{border-bottom:1px solid #5C7CFA}.page-intro{padding:44px 0 20px}.page-intro p{max-width:820px}.section{padding:24px 0 34px}.section+.section{border-top:1px solid rgba(255,255,255,.07)}.section-title{display:flex;align-items:baseline;justify-content:space-between;gap:18px;margin-bottom:22px}.section-title span{color:#9098A3;font-size:13px}.grid{display:grid;gap:20px;min-width:0}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:#12161C;border:1px solid rgba(255,255,255,.09);border-radius:13px;padding:20px;min-width:0}.card:hover{border-color:rgba(255,255,255,.16)}.card h3{font-size:18px}.card p{font-size:15px}.card a{display:inline-block;margin-top:5px}.number{color:#6EA8FF;font-size:13px;letter-spacing:.12em}.article{max-width:820px}.article p{line-height:1.87}.article h2{margin:28px 0 12px}.article h3{margin:22px 0 9px}.article ul{padding-left:22px}.article-layout{display:grid;grid-template-columns:minmax(0,820px) minmax(220px,1fr);gap:34px;align-items:start}.aside-panel{background:#12161C;border:1px solid #262B33;padding:18px;border-radius:12px;position:sticky;top:16px}.aside-panel a{display:block;border-bottom:1px solid #30343C;padding:9px 0}.media{width:100%;max-width:100%;min-width:0;display:flex;align-items:center;justify-content:center;background:#0D1015;border-radius:14px;overflow:hidden}.media img{object-fit:contain;object-position:center center;width:100%;height:100%;max-width:100%}.media-wide{height:250px}.media-banner{height:240px}.media-square{height:175px}.media-device{height:350px}.media-hero{height:305px}.media-gif{height:160px}.media-logo{border-radius:0}.media-placeholder{background:linear-gradient(135deg,#10151B,#171C23 52%,#0D1015);border:1px solid #242A33}.image-card .media{margin-bottom:14px}.timeline{counter-reset:step}.timeline-item{padding:18px 0 18px 38px;position:relative;border-left:1px solid #363E4B;margin-left:12px}.timeline-item:before{counter-increment:step;content:counter(step);position:absolute;left:-14px;top:20px;border-radius:50%;background:#171C23;color:#8ED8FF;border:1px solid #5C7CFA;width:26px;height:26px;display:grid;place-items:center;font-size:13px}.index-item{display:grid;grid-template-columns:55px minmax(0,1fr);gap:12px;border-bottom:1px solid #272D36;padding:15px 0}.index-item h3{margin-bottom:6px}.note{border-left:3px solid #5C7CFA;background:#12161C;padding:16px 19px;border-radius:0 10px 10px 0}.site-footer{margin-top:46px;background:#050608;border-top:1px solid #22272F;padding:44px 0 20px}.footer-grid{display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:32px}.footer-grid h2{font-size:17px}.footer-grid a:not(.footer-brand){display:block;color:#C7CDD5;font-size:14px;margin:4px 0}.footer-grid p{font-size:14px;color:#9098A3}.footer-brand{display:inline-block;margin-bottom:15px}.footer-bottom{border-top:1px solid #262B33;margin-top:25px;padding-top:19px;display:flex;flex-wrap:wrap;gap:10px 24px;color:#9098A3;font-size:13px}#back-top{position:fixed;right:18px;bottom:18px;z-index:15;width:42px;height:42px;border:1px solid #424C5A;background:#171C23;color:#fff;border-radius:50%;opacity:0;visibility:hidden;pointer-events:none}#back-top.show{opacity:1;visibility:visible;pointer-events:auto}details{border:1px solid #313742;background:#12161C;border-radius:10px;margin:10px 0;padding:12px 18px}summary{cursor:pointer;color:#F5F7FA;font-weight:600}details p{margin:12px 0 0}@media(max-width:980px){.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)}.aside-panel{position:static}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:768px){.container{width:min(100% - 32px,1200px)}h1{font-size:26px}h2{font-size:22px}h3{font-size:18px}.hero h1{font-size:29px}.hero,.split{grid-template-columns:minmax(0,1fr);gap:18px}.hero .hero-art,.split .split-art{order:-1}.hero{padding:28px 0}.page-intro{padding-top:30px}.section{padding:18px 0 22px}.hero .media-hero{height:200px}.media-wide{height:170px}.media-banner{height:140px}.media-square{height:145px}.media-gif{height:130px}.media-device{height:330px}.grid-2{grid-template-columns:minmax(0,1fr)}.topbar{height:62px;padding:0 16px}.menu-toggle{width:40px;height:40px}.enter-link{height:38px;padding:0 12px;font-size:12px}.media-logo{height:28px;min-width:78px}.media-logo img{max-height:28px}.channel-inner{height:44px;padding:0 12px;justify-content:flex-start}.nav-link{padding:0 8px}.site-drawer{width:min(86vw,340px)}.footer-grid{gap:20px}}@media(max-width:360px){.grid-3,.grid-4{grid-template-columns:minmax(0,1fr)}.topbar{padding:0 12px}.enter-link{padding:0 9px;font-size:11px}.center-brand{max-width:38%}.card{padding:16px}}