*{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}body.drawer-locked{overflow:hidden}a{color:inherit;text-decoration:none}a:hover{color:#8ED8FF}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid #8ED8FF;outline-offset:3px}button{font:inherit;cursor:pointer}img{max-width:100%;height:auto;display:block}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:#F5F7FA;line-height:1.35;letter-spacing:.01em}h1{font-size:40px}h2{font-size:26px}h3{font-size:20px}p{margin-bottom:16px}.wrap{width:min(1200px,calc(100% - 48px));margin-inline:auto;min-width:0}.section{margin-top:54px;margin-bottom:54px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:22px}.section-head h2{margin:0}.section-head p{margin:4px 0 0}.eyebrow{display:inline-block;color:#8ED8FF;font-size:12px;font-weight:bold;letter-spacing:.13em;margin-bottom:12px;text-transform:uppercase}.muted{color:#9098A3;font-size:14px}.lead{font-size:17px;max-width:860px;color:#C7CDD5}.site-header{height:74px;background:rgba(8,10,13,.96);border-bottom:1px solid rgba(255,255,255,.09);position:relative;z-index:30}.header-inner{width:min(1200px,calc(100% - 48px));height:100%;margin:auto;display:flex;align-items:center;justify-content:space-between;position:relative}.menu-toggle{height:44px;width:44px;display:flex;flex-direction:column;gap:5px;align-items:center;justify-content:center;background:transparent;border:1px solid rgba(255,255,255,.16);border-radius:9px;color:#fff}.menu-toggle span{height:2px;width:19px;background:#C7CDD5;display:block}.brand-mark{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:175px;display:flex;justify-content:center;align-items:center;max-width:calc(100% - 215px)}.brand-mark .media{height:36px;background:none;border:0}.brand-mark img{max-height:36px;width:auto}.enter-link,.button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;border:1px solid #5C7CFA;border-radius:999px;padding:0 19px;background:#1A2855;color:#F5F7FA;font-size:14px;white-space:nowrap}.enter-link:hover,.button:hover{background:#293A72;color:#fff}.channel-strip{background:#0D1015;border-bottom:1px solid rgba(255,255,255,.09);height:48px}.channel-inner{width:min(1200px,calc(100% - 48px));height:100%;margin:auto;display:flex;justify-content:space-between;gap:24px;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin;white-space:nowrap}.channel-inner a{display:flex;align-items:center;flex:0 0 auto;height:100%;font-size:14px;border-bottom:2px solid transparent}.channel-inner a.active{color:#6EA8FF;border-color:#6EA8FF}.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.67);z-index:39;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s,visibility .18s}.site-drawer{position:fixed;inset:0 auto 0 0;width:420px;max-width:100vw;background:#0D1015;z-index:40;transform:translateX(-102%);visibility:hidden;pointer-events:none;overflow-y:auto;padding:24px;border-right:1px solid rgba(255,255,255,.16);transition:transform .2s,visibility .2s}.site-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.drawer-head{display:flex;justify-content:space-between;align-items:start;gap:14px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.09)}.drawer-brand .media{height:36px;width:160px;background:none}.drawer-brand img{max-height:36px;width:auto}.drawer-brand p{font-size:13px;color:#9098A3;margin:8px 0 0}.drawer-close{width:40px;height:40px;border:1px solid rgba(255,255,255,.16);background:#171C23;border-radius:10px;color:white;font-size:26px;line-height:1}.drawer-group{padding:15px 0;border-bottom:1px solid rgba(255,255,255,.09)}.drawer-group h2{font-size:13px;color:#9098A3;margin:0 0 8px}.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px 8px}.drawer-grid a{padding:7px 10px;border-left:2px solid transparent;border-radius:3px;font-size:14px}.drawer-grid a.active{color:#6EA8FF;border-left-color:#6EA8FF;background:#171C23}.drawer-grid a:hover{background:#1B2129}.drawer-note{margin:22px 0;color:#9098A3;font-size:12px}.media{width:100%;min-width:0;max-width:100%;background:#0D1015;border-radius:14px;display:flex;align-items:center;justify-content:center;overflow:hidden;border:1px solid rgba(255,255,255,.09)}.media img{width:100%;height:100%;object-fit:contain;object-position:center center}.media-square{aspect-ratio:1/1}.media-wide{aspect-ratio:16/9}.media-banner{aspect-ratio:16/7;max-height:250px}.media-device{aspect-ratio:9/16;max-height:350px}.media-hero{height:305px}.media-card{height:165px}.media-gif{height:160px}.media-logo{border:0;background:transparent;overflow:visible}.media-placeholder{background:linear-gradient(135deg,#111720,#121820 52%,#0D1015);position:relative}.media-placeholder:after{content:'';width:26%;height:1px;background:rgba(142,216,255,.17);transform:rotate(-26deg)}.hero{display:grid;grid-template-columns:minmax(0,56fr) minmax(0,44fr);gap:30px;align-items:center;padding-top:43px}.hero-copy{min-width:0}.hero-copy p{max-width:620px}.hero-links,.text-links{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:20px}.hero-links a,.text-links a,.inline-link{color:#8ED8FF;text-decoration:underline;text-decoration-color:#5C7CFA;text-underline-offset:5px}.hero .hero-visual{min-width:0}.grid{display:grid;gap:20px}.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{min-width:0;background:#12161C;border:1px solid rgba(255,255,255,.09);border-radius:13px;padding:20px}.card h3{font-size:18px;margin:12px 0}.card p{font-size:15px;margin:0}.card .media{margin-bottom:14px}.card a.card-link{display:inline-block;color:#8ED8FF;margin-top:13px;font-size:14px}.index-card{background:#0D1015;padding:18px;border-top:1px solid rgba(255,255,255,.16)}.index-card .index-number{color:#6EA8FF;font-size:13px;font-weight:bold}.index-card h3{font-size:18px;margin:7px 0}.index-card p{font-size:15px;margin:0 0 9px}.index-card a{color:#8ED8FF;font-size:14px}.split{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:30px;align-items:start}.split.equal{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.split.visual-left{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);align-items:center}.split.visual-right{grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);align-items:center}.panel{background:#0D1015;border:1px solid rgba(255,255,255,.09);border-radius:14px;padding:24px;min-width:0}.panel p:last-child,.article-section p:last-child{margin-bottom:0}.item-list{display:grid;gap:0}.item-list a,.item-list .item{display:block;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.09)}.item-list strong{color:#F5F7FA}.item-list small{display:block;font-size:14px;color:#9098A3;line-height:1.7;margin-top:5px}.numbered{display:grid;grid-template-columns:1fr 1fr;gap:0 25px}.numbered-item{border-top:1px solid rgba(255,255,255,.16);padding:16px 0;min-width:0}.numbered-item span{color:#6EA8FF;font-size:13px}.numbered-item h3{font-size:18px;margin:5px 0}.numbered-item p{font-size:15px}.numbered-item a{color:#8ED8FF}.page-heading{padding:48px 0 25px;border-bottom:1px solid rgba(255,255,255,.09)}.page-heading h1{font-size:34px;max-width:1000px;margin-bottom:16px}.page-heading .lead{margin-bottom:0}.article-layout{display:grid;grid-template-columns:minmax(0,820px) minmax(200px,1fr);gap:44px;margin-top:32px}.article-main{min-width:0}.article-section{padding:20px 0 25px;border-bottom:1px solid rgba(255,255,255,.09)}.article-section:first-child{padding-top:0}.article-section h2{font-size:26px;margin-bottom:18px}.article-section p{font-size:16px;line-height:1.85}.section-num{font-size:14px;color:#6EA8FF;vertical-align:middle}.sidebar{min-width:0}.sidebar .panel{position:sticky;top:25px}.sidebar h2{font-size:20px}.sidebar a{display:block;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.09);font-size:14px}.related{border-top:1px solid rgba(255,255,255,.09);padding-top:26px}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related-link{border:1px solid rgba(255,255,255,.16);background:#12161C;border-radius:999px;padding:8px 17px;font-size:14px}.figure-content{margin:20px 0 24px;max-width:780px}.feature-image{max-width:750px}.figure-caption{margin-top:8px;font-size:13px;color:#9098A3}.news-item{padding:22px 0;border-bottom:1px solid rgba(255,255,255,.09)}.news-item h2{font-size:21px;margin:0 0 12px}.news-item p{max-width:900px}.news-item a{color:#8ED8FF;font-size:14px}.faq-list details{border-bottom:1px solid rgba(255,255,255,.14);padding:17px 0}.faq-list summary{cursor:pointer;color:#F5F7FA;font-weight:bold}.faq-list p{margin:12px 0 0}.notice{font-size:14px;color:#9098A3;border-left:2px solid #5C7CFA;padding-left:15px}.site-footer{background:#050608;border-top:1px solid rgba(255,255,255,.09);padding:45px 0 22px;margin-top:65px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}.footer-grid h2{font-size:16px;margin-bottom:14px}.footer-grid a:not(.footer-about a){display:block;font-size:14px;margin:7px 0}.footer-about p{font-size:14px;margin-top:17px}.footer-about .media{width:160px;height:36px}.footer-about img{width:auto;max-height:36px}.footer-bottom{border-top:1px solid rgba(255,255,255,.09);margin-top:30px;padding-top:18px;font-size:13px;color:#9098A3}.footer-bottom p{margin:4px 0}.back-top{position:fixed;bottom:20px;right:20px;width:44px;height:44px;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s;background:#1A2855;color:white;border:1px solid #5C7CFA;border-radius:50%;z-index:15}.back-top.visible{opacity:1;visibility:visible;pointer-events:auto}
@media(max-width:1100px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{grid-template-columns:minmax(0,1fr) 230px;gap:25px}.footer-grid{gap:22px}}
@media(max-width:980px){.wrap,.header-inner,.channel-inner{width:calc(100% - 40px)}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.channel-inner{justify-content:flex-start;gap:27px}.hero{gap:20px}.article-layout{grid-template-columns:1fr}.sidebar .panel{position:static}.sidebar{display:none}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:767px){body{font-size:15px}.wrap,.header-inner,.channel-inner{width:calc(100% - 32px)}.site-header{height:62px}.menu-toggle{width:40px;height:40px}.enter-link{height:38px;min-height:38px;padding:0 12px;font-size:12px}.brand-mark{max-width:calc(100% - 175px);width:130px}.brand-mark .media{height:28px}.brand-mark img{max-height:28px}.channel-strip{height:44px}.channel-inner{gap:23px}.channel-inner a{font-size:13px}.hero{grid-template-columns:1fr;padding-top:30px;gap:23px}.hero-visual{grid-row:1}.hero-copy{grid-row:2}.hero .media-hero{height:195px}.hero h1{font-size:29px}.page-heading{padding:30px 0 24px}.page-heading h1{font-size:26px}.section{margin-top:34px;margin-bottom:34px}.section-head h2,.article-section h2{font-size:22px}.section-head{align-items:start}.split,.split.equal,.split.visual-left,.split.visual-right{grid-template-columns:1fr;gap:18px}.split.visual-left>.media,.split.visual-right>.media{order:-1}.media-card{height:145px}.media-gif{height:130px}.media-banner{max-height:140px}.media-device{max-height:350px;margin:auto}.grid{gap:14px}.card{padding:14px}.card h3,.index-card h3,.numbered-item h3{font-size:16px}.card p,.index-card p,.numbered-item p{font-size:14px}.numbered{grid-template-columns:1fr}.article-section p{font-size:15px}.footer-grid{gap:20px}.site-footer{margin-top:40px}}
@media(max-width:359px){.brand-mark{max-width:calc(100% - 168px);width:100px}.enter-link{padding:0 9px;font-size:11px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.hero h1{font-size:27px}.site-drawer{width:min(86vw,340px)}}
@media(max-width:600px){.site-drawer{width:min(86vw,340px);padding:18px}.drawer-grid a{font-size:13px;padding:8px 5px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}