body.site{margin:0;color:#13212f;background:radial-gradient(circle at top,rgba(76,111,255,.14),transparent 38%),linear-gradient(180deg,#f4f7fb,#eef3f8);font-family:var(--font-serif),Georgia,"Times New Roman",serif}body.site *,body.site :after,body.site :before{box-sizing:border-box}body.site a{color:inherit;text-decoration:none}body.site img{display:block;max-width:100%;height:auto}body.site .site-shell{width:100%}body.site .site-header{position:-webkit-sticky;position:sticky;top:0;z-index:30;background:rgba(244,247,251,.92);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid rgba(19,33,47,.1)}body.site .site-footer-inner,body.site .site-header-inner,body.site .site-main{width:min(1120px,100%);margin:0 auto;padding-left:16px;padding-right:16px}body.site .site-header-inner{min-height:60px;display:flex;align-items:center;gap:12px;justify-content:space-between;position:relative}body.site .brand{min-width:0;flex:1 1 auto}body.site .brand-home,body.site .brand-link{display:inline-flex;align-items:center;gap:10px;max-width:100%}body.site .brand-mark{width:30px;height:30px;border-radius:10px;background:linear-gradient(135deg,#1d4ed8,#38bdf8);box-shadow:0 8px 18px rgba(29,78,216,.18);flex:0 0 auto}body.site .brand-name{font-size:16px;line-height:1.15;font-weight:700;letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}body.site .menu{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(19,33,47,.14);background:#fff;color:#13212f;border-radius:999px;width:42px;height:42px;flex:0 0 auto;display:inline-grid;place-items:center;box-shadow:0 10px 20px rgba(19,33,47,.06)}body.site .menu:before{content:"";width:16px;height:12px;border-top:2px solid;border-bottom:2px solid;position:relative}body.site .menu:after{content:"";width:16px;border-top:2px solid;position:absolute}body.site.nav-open .menu{background:#13212f;color:#fff}body.site .nav-list{display:none;position:absolute;left:16px;right:16px;top:calc(100% + 10px);background:#ffffff;border:1px solid rgba(19,33,47,.12);box-shadow:0 18px 40px rgba(19,33,47,.12);border-radius:18px;padding:10px;margin:0;list-style:none;z-index:35;max-height:calc(100vh - 90px);overflow:auto}body.site.nav-open .nav-list{display:grid;grid-gap:8px;gap:8px}body.site .nav-list>li{position:relative;border-radius:14px;background:#f7f9fc;overflow:hidden}body.site .nav-list>li>a,body.site .nav-list>li>span{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:46px;padding:0 14px;font-size:14px;font-weight:600}body.site .nav-list>li.has-children>a:after,body.site .nav-list>li.has-children>span:after{content:"+";font-size:16px;color:#47607a}body.site .nav-list>li.tap>a:after,body.site .nav-list>li.tap>span:after{content:"–"}body.site .nav-list ul{display:none;list-style:none;margin:0;padding:0 10px 10px}body.site .nav-list li.tap>ul{display:grid;grid-gap:6px;gap:6px}body.site .nav-list ul a{display:block;padding:9px 12px;border-radius:12px;background:#fff;border:1px solid rgba(19,33,47,.08);font-size:13px}body.site .page{padding-top:18px;padding-bottom:44px}body.site .breadcrumb{margin:0 0 16px}body.site .breadcrumb ol{display:flex;align-items:center;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0;color:#56708c;font-size:12px}body.site .breadcrumb li+li:before{content:">";margin-right:6px;color:#9aa9b8}body.site .breadcrumb a{color:#3b5876}body.site .page-title{margin:0;font-size:16px;line-height:1.35;letter-spacing:.01em}body.site .article-desc,body.site .cat-desc{margin:10px 0 0;font-size:14px;line-height:1.7;font-weight:400;color:#4e657d}body.site .article-card,body.site .copy,body.site .hero-card,body.site .hot-card,body.site .list-card,body.site .panel,body.site .tag-card,body.site .toc-card{background:rgba(255,255,255,.84);border:1px solid rgba(19,33,47,.08);border-radius:20px;box-shadow:0 16px 32px rgba(19,33,47,.06)}body.site .home-grid{display:grid;grid-gap:14px;gap:14px}body.site .hero-card{overflow:hidden}body.site .hero-media{aspect-ratio:16/10;position:relative;background:#dbe7f5}body.site .hero-copy{padding:16px}body.site .hero-copy h2{margin:0;font-size:15px;line-height:1.45}body.site .hero-copy p{margin:10px 0 0;color:#4e657d;font-size:13px;line-height:1.8}body.site .hero-actions{margin-top:14px;display:flex;gap:10px;flex-wrap:wrap}body.site .chip-link,body.site .ghost-link,body.site .more-link{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:0 14px;border-radius:999px;font-size:13px;font-weight:600}body.site .chip-link{background:#13212f;color:#fff}body.site .ghost-link,body.site .more-link{border:1px solid rgba(19,33,47,.12);background:#fff}body.site .home-split{display:grid;grid-gap:14px;gap:14px}body.site .panel{padding:16px}body.site .panel h2,body.site .panel h3{margin:0;font-size:15px}body.site .article-list,body.site .friend-list,body.site .hot-list,body.site .list-compact,body.site .tag-list{list-style:none;margin:0;padding:0}body.site .list-compact{display:grid;grid-gap:10px;gap:10px}body.site .hot-list a,body.site .list-compact a,body.site .tag-list a{display:block}body.site .hot-list,body.site .tag-list{display:flex;flex-wrap:wrap;gap:10px}body.site .hot-list a,body.site .tag-list a{padding:10px 12px;border-radius:14px;background:#eef3f8;border:1px solid rgba(19,33,47,.06);font-size:13px}body.site .list-card{overflow:hidden}body.site .list-item{display:grid;grid-gap:12px;gap:12px;padding:14px;border-top:1px solid rgba(19,33,47,.08)}body.site .list-item:first-child{border-top:0}body.site .list-thumb{position:relative;aspect-ratio:16/10;border-radius:16px;overflow:hidden;background:#dbe7f5}body.site .article-list h2,body.site .list-item h2{margin:0;font-size:15px;line-height:1.5}body.site .list-item p{margin:0;color:#4e657d;font-size:13px;line-height:1.75}body.site .article-layout{display:grid;grid-gap:14px;gap:14px}body.site .toc-card{padding:14px 16px}body.site .toc-card h2{margin:0 0 10px;font-size:14px}body.site .in-article-toc ol{margin:0;padding-left:18px;display:grid;grid-gap:8px;gap:8px}body.site .in-article-toc a{color:#31557a;font-size:13px;line-height:1.55}body.site .copy{padding:18px 16px;overflow:hidden}body.site .copy h2{margin:22px 0 12px;font-size:15px;line-height:1.45}body.site .copy h2:first-child{margin-top:0}body.site .copy li,body.site .copy p{font-size:14px;line-height:1.9;color:#274055}body.site .copy img{border-radius:18px;margin:16px 0}body.site .article-visual{position:relative;aspect-ratio:16/9;border-radius:20px;overflow:hidden;background:#dbe7f5}body.site .article-kicker{margin:0 0 10px;color:#31557a;font-size:12px;letter-spacing:.12em;text-transform:uppercase}body.site .article-cover{margin:14px 0 0;border-radius:20px;overflow:hidden;position:relative;aspect-ratio:16/9;background:#dbe7f5}body.site .pager{margin-top:18px}body.site .pager ul{list-style:none;margin:0;padding:0;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:38px;padding:0 14px;border-radius:999px;background:#fff;border:1px solid rgba(19,33,47,.1);font-size:13px}body.site #friend-links{margin-top:22px;padding:16px}body.site #friend-links ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px}body.site #friend-links a{display:inline-flex;align-items:center;min-height:34px;padding:0 12px;border-radius:999px;background:#fff;border:1px solid rgba(19,33,47,.08);font-size:13px}body.site .site-footer{border-top:1px solid rgba(19,33,47,.08);padding:18px 0 26px;color:#58708a;font-size:12px}body.site .site-footer-inner{display:grid;grid-gap:6px;gap:6px}body.site .site-footer a{color:inherit}body.site .hidden{display:none}@media (min-width:769px){body.site .site-header-inner{min-height:72px}body.site .menu{display:none}body.site .nav-list{display:flex!important;position:static;padding:0;margin:0;gap:10px;border:0;box-shadow:none;max-height:none;left:auto;right:auto;top:auto}body.site .nav-list,body.site .nav-list>li{background:transparent;overflow:visible}body.site .nav-list>li>a,body.site .nav-list>li>span{min-height:40px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.74);border:1px solid rgba(19,33,47,.08)}body.site .nav-list ul{position:absolute;left:0;top:calc(100% + 10px);min-width:220px;padding:10px;background:#fff;border:1px solid rgba(19,33,47,.12);box-shadow:0 18px 40px rgba(19,33,47,.12);border-radius:16px}body.site .nav-list li:hover>ul{display:grid;grid-gap:6px;gap:6px}body.site .home-grid{grid-template-columns:1.25fr .95fr;align-items:start}body.site .home-split{grid-template-columns:1fr 1fr}body.site .article-layout{grid-template-columns:minmax(220px,280px) minmax(0,1fr);align-items:start}body.site .toc-card{position:-webkit-sticky;position:sticky;top:92px}body.site .list-item{grid-template-columns:220px minmax(0,1fr);align-items:start}}