*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:0;background:#080A0D;color:#C7CDD5;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}a{color:#8ED8FF;text-decoration:none}a:hover{color:#fff}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid #8ED8FF;outline-offset:3px}img{max-width:100%}h1,h2,h3{margin:0 0 18px;line-height:1.35;color:#F5F7FA;font-weight:700}h1{font-size:34px}h2{font-size:26px}h3{font-size:20px}p{margin:0 0 16px;overflow-wrap:break-word}section{min-width:0}.container{width:min(100% - 48px,1200px);margin-inline:auto}.site-header{position:relative;z-index:30;background:#0D1015}.topbar{height:74px;background:rgba(8,10,13,.96);position:relative;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100% - 1200px)/2));gap:10px}.menu-trigger{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:44px;height:44px;border:1px solid rgba(255,255,255,.16);border-radius:10px;background:#12161C;flex:none}.menu-trigger span{width:19px;height:2px;background:#F5F7FA;border-radius:4px}.brand{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);max-width:38%;display:flex;align-items:center;justify-content:center}.brand .media,.drawer-brand .media,.footer-brand .media{border:0;background:transparent;padding:0;min-height:0;aspect-ratio:auto}.brand .media img{height:36px;width:auto;max-width:100%;object-fit:contain}.brand .media-placeholder{height:36px;width:100px}.entry-button{margin-left:auto;flex:none;display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 20px;border:1px solid #5C7CFA;border-radius:999px;background:#253665;color:#F5F7FA;font-size:14px;font-weight:700}.entry-button:hover{background:#314D90}.channel-strip{height:48px;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;scrollbar-color:#36475e #0D1015;background:#0D1015;border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.09)}.channel-inner{display:flex;width:max-content;min-width:100%;height:100%;max-width:1200px;margin:auto;justify-content:space-between;align-items:stretch;gap:24px;padding:0 8px}.channel-inner a{white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;color:#C7CDD5;font-size:14px;border-bottom:2px solid transparent;padding:0 9px}.channel-inner a.active{color:#6EA8FF;border-color:#6EA8FF}.channel-inner a:hover{color:#fff}.drawer-overlay{position:fixed;inset:0;z-index:39;background:rgba(0,0,0,.73);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.site-drawer{position:fixed;z-index:40;top:0;bottom:0;left:0;width:420px;max-width:86vw;overflow-y:auto;overscroll-behavior:contain;background:#0D1015;box-shadow:20px 0 50px #0009;transform:translateX(-102%);transition:transform .24s,visibility .24s;visibility:hidden;pointer-events:none;padding:26px 28px}.drawer-open .drawer-overlay{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{position:relative;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:16px;margin-bottom:18px}.drawer-brand{display:inline-block;width:180px;max-width:60%}.drawer-brand img{max-height:36px;width:auto;object-fit:contain}.drawer-head p{font-size:13px;color:#9098A3;margin:6px 0 0}.drawer-close{position:absolute;right:0;top:0;border:1px solid #49505c;border-radius:9px;width:40px;height:40px;background:#171C23;color:#fff;font-size:28px;line-height:1}.drawer-group{padding:12px 0 18px;border-bottom:1px solid rgba(255,255,255,.08)}.drawer-group h2{font-size:14px;letter-spacing:.07em;color:#9098A3;margin-bottom:10px}.drawer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.drawer-links a{font-size:14px;padding:8px 10px;color:#C7CDD5;border-left:2px solid transparent;border-radius:3px}.drawer-links a:hover{background:#1B2129}.drawer-links a.current{color:#6EA8FF;border-color:#6EA8FF;background:#171C23}.skip-link{position:absolute;top:-60px;left:12px;z-index:60;background:#fff;color:#000;padding:8px}.skip-link:focus{top:8px}.site-main{min-height:65vh}.site-main>.container{padding-top:38px;padding-bottom:60px}.eyebrow{color:#8ED8FF;text-transform:uppercase;letter-spacing:.16em;font-size:13px;font-weight:700}.page-intro{max-width:980px;margin-bottom:34px}.intro-text{font-size:17px;color:#AEB9C8;max-width:800px}.page-intro h1{margin-bottom:16px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 275px;gap:40px}.prose{min-width:0;max-width:820px}.article-section{margin-bottom:34px}.article-section h2{border-left:3px solid #6EA8FF;padding-left:14px;margin-bottom:20px}.article-section h3{margin-top:24px}.section-lead{color:#A4BDE3;font-size:17px}.side-panel,.panel,.info-card{border:1px solid rgba(255,255,255,.09);background:#12161C;border-radius:13px;padding:22px;min-width:0}.side-panel{height:max-content;position:sticky;top:24px}.side-panel h2,.panel h2{font-size:20px}.side-panel a{display:block;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.07)}.related-section{margin-top:40px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14)}.related-links{display:flex;flex-wrap:wrap;gap:11px}.related-link,.tag-link{background:#171C23;border:1px solid rgba(255,255,255,.13);color:#8ED8FF;padding:9px 15px;border-radius:9px}.feature-link,.inline-link{color:#8ED8FF;font-weight:600;font-size:14px}.site-section{margin:0 0 54px}.section-heading{margin:0 0 22px;display:flex;justify-content:space-between;align-items:end;gap:16px}.section-heading p{color:#9098A3;font-size:14px;margin:0}.hero{display:grid;grid-template-columns:minmax(0,56fr) minmax(0,44fr);align-items:center;gap:28px;background:radial-gradient(circle at 85% 25%,rgba(62,100,176,.16),transparent 45%),#0D1015;border:1px solid rgba(255,255,255,.09);padding:30px;border-radius:14px}.hero h1{font-size:40px}.hero p{max-width:670px}.hero-links{display:flex;flex-wrap:wrap;gap:24px;margin-top:20px}.hero .media{--media-limit:310px}.media{width:100%;max-width:100%;min-width:0;background:#0D1015;border-radius:14px;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;border:1px solid rgba(255,255,255,.09);padding:5px}.media img{display:block;width:100%;height:auto;max-width:100%;max-height:var(--media-limit,180px);object-fit:contain;object-position:center center}.media-hero img{max-height:var(--media-limit,310px)}.media-banner img{max-height:var(--media-limit,250px)}.media-device img{max-height:var(--media-limit,350px);width:auto}.media-gif img{max-height:var(--media-limit,180px)}.media-placeholder{min-height:150px;background:linear-gradient(130deg,#101820,#171C23 47%,#101419);border:1px solid rgba(255,255,255,.06)}.media-hero.media-placeholder{min-height:280px}.media-banner.media-placeholder{min-height:180px}.media-device.media-placeholder{min-height:300px}.grid{display:grid;gap:20px;min-width:0}.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.mini-card{padding:20px;background:#12161C;border:1px solid rgba(255,255,255,.09);border-radius:13px;min-width:0}.mini-card h3{font-size:18px}.mini-card p{font-size:15px;color:#B4BCC7}.mini-card .number{color:#6EA8FF;font-size:13px}.split{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:26px;align-items:center}.split-reverse{grid-template-columns:minmax(0,1fr) minmax(0,1.25fr)}.split>.copy{min-width:0}.split .copy h2{margin-bottom:16px}.text-index{border-top:1px solid rgba(255,255,255,.15)}.text-index article{padding:16px 0;border-bottom:1px solid rgba(255,255,255,.11)}.text-index h3{font-size:17px;margin-bottom:7px}.text-index p{font-size:15px;margin-bottom:7px}.knowledge-list{border-top:1px solid rgba(255,255,255,.13)}.knowledge-row{display:grid;grid-template-columns:52px minmax(0,1fr);gap:12px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12)}.knowledge-row .number{color:#6EA8FF;font-size:21px}.knowledge-row h3{font-size:18px;margin-bottom:8px}.knowledge-row p{font-size:15px;margin-bottom:6px}.visual-card{border:1px solid rgba(255,255,255,.09);border-radius:13px;background:#12161C;min-width:0;padding:12px}.visual-card h3{font-size:18px;margin:14px 4px 8px}.visual-card p{font-size:14px;margin:0 4px 8px}.visual-card .media{--media-limit:175px}.poster .media{--media-limit:250px}.notice-card .media{--media-limit:155px}.faq-item{border-bottom:1px solid rgba(255,255,255,.13);padding:16px 0}.faq-item summary{font-size:18px;font-weight:700;color:#F5F7FA;cursor:pointer}.faq-item p{padding-top:12px}.article-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px}.simple-list{padding-left:22px}.simple-list li{padding-bottom:12px}.site-footer{background:#050608;border-top:1px solid rgba(255,255,255,.08);padding:42px 0 24px}.footer-grid{display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:32px}.footer-grid h2{font-size:17px;margin:2px 0 14px}.footer-grid a:not(.footer-brand){display:block;color:#AAB3C0;font-size:14px;padding:4px 0}.footer-grid a:hover{color:#8ED8FF}.footer-brand{display:inline-block;max-width:165px}.footer-brand img{max-height:35px;object-fit:contain;width:auto}.footer-about p{font-size:14px;color:#9098A3}.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:28px;padding-top:20px;font-size:13px;color:#9098A3}.back-top{position:fixed;right:18px;bottom:18px;background:#253665;color:#fff;border:1px solid #5C7CFA;border-radius:50%;width:44px;height:44px;z-index:20}.back-top[hidden]{display:none}
@media(max-width:1100px){.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}.channel-inner{justify-content:flex-start}.article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:25px}}
@media(max-width:980px){.container{width:calc(100% - 40px)}.cols-3{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{display:block}.side-panel{position:static;margin-top:26px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero{grid-template-columns:1.1fr .9fr;padding:22px}.hero h1{font-size:34px}.split{gap:22px}}
@media(max-width:767px){body{font-size:15px}.container{width:calc(100% - 32px)}.topbar{height:62px;padding:0 16px}.menu-trigger{height:40px;width:40px}.brand{max-width:35%}.brand .media img{max-height:28px}.brand .media-placeholder{height:27px;width:55px}.entry-button{height:38px;min-height:38px;padding:0 13px;font-size:12px}.channel-strip{height:44px}.channel-inner{gap:8px}.channel-inner a{font-size:13px;padding:0 10px}.site-main>.container{padding-top:24px;padding-bottom:40px}h1{font-size:26px}h2{font-size:22px}h3{font-size:18px}.hero{display:flex;flex-direction:column-reverse;align-items:stretch;padding:18px;gap:16px}.hero h1{font-size:29px}.hero .media img{max-height:205px}.hero .media-placeholder{min-height:180px}.split,.split-reverse{display:flex;flex-direction:column;align-items:stretch}.split>.media{order:-1}.site-section{margin-bottom:34px}.cols-3,.cols-4{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.grid{gap:12px}.mini-card{padding:15px}.visual-card{padding:8px}.visual-card .media img{max-height:150px}.poster .media img{max-height:140px}.notice-card .media img{max-height:140px}.media-device img{max-height:350px}.article-pair{display:block}.page-intro{margin-bottom:24px}.intro-text{font-size:15px}.article-section{margin-bottom:30px}.footer-grid{gap:20px}.footer-grid h2{font-size:16px}.knowledge-row{grid-template-columns:42px 1fr}.side-panel{padding:16px}}
@media(max-width:360px){.container{width:calc(100% - 32px)}.brand{max-width:29%}.brand .media img{max-height:25px}.topbar{padding:0 12px}.entry-button{padding:0 9px;font-size:11px}.cols-3,.quick-nav{grid-template-columns:1fr}.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}.mini-card p{font-size:14px}.hero h1{font-size:28px}.site-drawer{padding:18px}.drawer-links{gap:2px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.site-drawer,.drawer-overlay{transition:none}}
