body.site{--font-serif:var(--font-serif);margin:0;color:#13202f;background:radial-gradient(circle at top left,rgba(50,90,140,.12),transparent 34%),radial-gradient(circle at 100% 0,rgba(16,124,136,.08),transparent 30%),#f4f7fb;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body.site a{color:inherit;text-decoration:none}body.site img{display:block;max-width:100%;height:auto}body.site .site-shell{width:min(1120px,calc(100vw - 28px));margin:0 auto}body.site .site-top{position:-webkit-sticky;position:sticky;top:0;z-index:40;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:rgba(244,247,251,.9);border-bottom:1px solid rgba(19,32,47,.08)}body.site .site-top-inner{width:min(1120px,calc(100vw - 28px));margin:0 auto;display:flex;align-items:center;gap:10px;padding:12px 0}body.site .brand{min-width:0;display:flex;align-items:center}body.site .brand h1,body.site .brand-link{font-size:16px;line-height:1.2;font-weight:700;letter-spacing:.02em;margin:0;color:#10253e}body.site .brand-link{display:inline-flex;align-items:center;gap:8px}body.site .brand-link:before{content:"";width:10px;height:10px;border-radius:999px;background:linear-gradient(135deg,#1b6da8,#16a085);box-shadow:0 0 0 4px rgba(27,109,168,.12)}body.site .menu{margin-left:auto;-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(19,32,47,.16);background:#ffffff;color:#13202f;border-radius:999px;width:42px;height:42px;display:inline-grid;place-items:center;box-shadow:0 10px 24px rgba(19,32,47,.08)}body.site .menu:before{content:"";width:16px;height:12px;background:linear-gradient(currentColor,currentColor) 0 0 /100% 2px no-repeat,linear-gradient(currentColor,currentColor) 50% /100% 2px no-repeat,linear-gradient(currentColor,currentColor) 0 100% /100% 2px no-repeat}body.site .nav-list{position:absolute;left:14px;right:14px;top:62px;list-style:none;margin:0;padding:10px;border:1px solid rgba(19,32,47,.1);border-radius:18px;background:#ffffff;box-shadow:0 20px 50px rgba(19,32,47,.14);display:none}body.site.nav-open .nav-list{display:grid;grid-gap:6px;gap:6px}body.site .nav-list>li{position:relative}body.site .nav-list>li>a,body.site .nav-list>li>span{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-radius:12px;background:#f6f9fc;font-size:14px;font-weight:600}body.site .nav-list>li>a:hover,body.site .nav-list>li>span:hover{background:#eaf2f8}body.site .nav-list>li>ul{list-style:none;margin:6px 0 0;padding:6px;display:none;gap:4px;border-radius:14px;background:#f9fbfd}body.site .nav-list>li.tap>ul{display:grid}body.site .nav-list>li>ul a{display:block;padding:10px 12px;border-radius:10px;color:#27445f;background:#ffffff}body.site .nav-list>li>ul a:hover{background:#eaf2f8}body.site .page{padding:18px 0 46px}body.site .page-head{margin:8px 0 18px}body.site .crumbs{margin:0 0 12px}body.site .crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px;font-size:12px;color:#536478}body.site .crumbs li{display:inline-flex;align-items:center;gap:6px}body.site .crumbs li+li:before{content:">";color:#8aa0b7}body.site h1{margin:0;font-size:16px;line-height:1.35;font-weight:800;letter-spacing:.01em}body.site h2{margin:12px 0 0;font-size:14px;line-height:1.6;font-weight:600;color:#31475f}body.site .article-desc,body.site .cat-desc{color:#415970}body.site .hero-grid{display:grid;grid-gap:14px;gap:14px}body.site .article-card,body.site .feature-card,body.site .friend-card,body.site .hero-card,body.site .hot-card,body.site .panel,body.site .tag-card{background:rgba(255,255,255,.88);border:1px solid rgba(19,32,47,.08);border-radius:22px;box-shadow:0 16px 40px rgba(19,32,47,.08)}body.site .hero-card{overflow:hidden}body.site .hero-copy{padding:18px}body.site .hero-copy p{margin:10px 0 0;color:#4c647d;line-height:1.75;font-size:14px}body.site .hero-media{aspect-ratio:16/10;overflow:hidden}body.site .cover img,body.site .hero-media img{width:100%;height:100%;object-fit:cover}body.site .section{margin-top:18px}body.site .section h2{margin:0 0 12px;color:#15283e;font-size:15px}body.site .article-grid,body.site .feature-grid,body.site .tag-grid{display:grid;grid-gap:12px;gap:12px}body.site .article-card,body.site .feature-card,body.site .hot-card,body.site .tag-card{overflow:hidden}body.site .article-card a,body.site .feature-card a,body.site .hot-card a,body.site .tag-card a{display:block;height:100%}body.site .article-copy,body.site .feature-copy,body.site .hot-copy,body.site .tag-copy{padding:14px}body.site .article-copy h3,body.site .feature-copy h3,body.site .hot-copy h3,body.site .tag-copy h3{margin:0;font-size:15px;line-height:1.5;color:#172a40}body.site .article-copy p,body.site .feature-copy p,body.site .hot-copy p,body.site .tag-copy p{margin:8px 0 0;color:#5b7188;font-size:13px;line-height:1.7}body.site .article-media,body.site .feature-media{aspect-ratio:4/3;overflow:hidden}body.site .copy{margin-top:18px;line-height:1.9;color:#23364a;font-size:15px}body.site .copy h2{margin-top:20px;margin-bottom:10px;font-size:16px}body.site .copy p{margin:0 0 1em}body.site .copy ol,body.site .copy ul{padding-left:1.2em}body.site .in-article-toc{margin:16px 0 0;padding:14px 16px;border-radius:18px;background:rgba(230,239,247,.9);border:1px solid rgba(19,32,47,.08)}body.site .in-article-toc ol{margin:0;padding-left:1.2em;display:grid;grid-gap:8px;gap:8px}body.site .in-article-toc a{color:#1d4f7a}body.site .pager{margin-top:22px}body.site .pager nav{display:flex;gap:10px;flex-wrap:wrap}body.site .pager a,body.site .pager span{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 14px;border-radius:999px;border:1px solid rgba(19,32,47,.12);background:#fff;color:#19324b}body.site .friend-links{margin-top:18px;padding:16px;border-radius:22px;background:rgba(255,255,255,.8);border:1px solid rgba(19,32,47,.08)}body.site #friend-links h2{display:none}body.site #friend-links ul{list-style:none;margin:0;padding:0;display:grid;grid-gap:8px;gap:8px}body.site #friend-links a{color:#244a73}body.site .site-footer{padding:16px 0 30px;color:#5b7188;font-size:12px}body.site .site-footer .icp{margin-top:8px}body.site .home-layout,body.site .home-lead,body.site .home-side{display:grid;grid-gap:14px;gap:14px}body.site .hot-list,body.site .tag-list{display:grid;grid-gap:10px;gap:10px}body.site .hot-item,body.site .tag-item{background:#fff;border-radius:16px;border:1px solid rgba(19,32,47,.08)}@media (min-width:769px){body.site .site-top-inner{gap:18px;padding:14px 0}body.site .menu{display:none}body.site .nav-list{position:static;display:flex;align-items:center;gap:8px;flex:1 1;padding:0;border:0;background:transparent;box-shadow:none}body.site.nav-open .nav-list{display:flex}body.site .nav-list>li>a,body.site .nav-list>li>span{background:transparent;padding:10px 12px}body.site .nav-list>li>ul{position:absolute;top:calc(100% + 6px);left:0;min-width:190px;border:1px solid rgba(19,32,47,.1);box-shadow:0 20px 44px rgba(19,32,47,.16)}body.site .nav-list>li:hover>ul{display:grid}body.site .home-layout{grid-template-columns:1.35fr .92fr;align-items:start}body.site .hero-grid{grid-template-columns:1.1fr .9fr;align-items:stretch}body.site .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}body.site .article-grid,body.site .tag-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}