body.site{margin:0;color:#172033;background:radial-gradient(circle at top,rgba(104,118,255,.12),transparent 32%),linear-gradient(180deg,#f7f8fc,#eef2fb 46%,#f8fafc);font-family:var(--font-serif),Georgia,serif;line-height:1.7}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%}body.site .site-shell{width:min(100%,1120px);margin:0 auto;padding:0 14px 28px}body.site .site-header{position:-webkit-sticky;position:sticky;top:0;z-index:30;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:rgba(247,248,252,.9);border-bottom:1px solid rgba(23,32,51,.1)}body.site .header-row{width:min(100%,1120px);margin:0 auto;padding:14px 14px 10px;display:grid;grid-template-columns:1fr auto;grid-gap:10px 12px;gap:10px 12px;align-items:center}body.site .brand{min-width:0}body.site .brand-home,body.site .brand-link{display:inline-flex;align-items:center;gap:10px;min-width:0;font-size:15px;font-weight:700;letter-spacing:.02em}body.site .brand-mark{width:11px;height:11px;border-radius:999px;background:linear-gradient(135deg,#4361ee,#1d4ed8);box-shadow:0 0 0 5px rgba(67,97,238,.1);flex:0 0 auto}body.site .menu{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(23,32,51,.14);background:#ffffff;color:#172033;border-radius:999px;padding:10px 14px;font:inherit;font-size:14px;line-height:1;box-shadow:0 8px 22px rgba(23,32,51,.08)}body.site.nav-open .menu{background:#172033;color:#fff}body.site .nav-wrap{width:min(100%,1120px);margin:0 auto;padding:0 14px 12px}body.site .nav-list{list-style:none;margin:0;padding:10px 0 0;display:none;flex-direction:column;gap:6px}body.site.nav-open .nav-list{display:flex}body.site .nav-list .nav-parent,body.site .nav-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid rgba(23,32,51,.12);background:rgba(255,255,255,.9);border-radius:14px;padding:11px 12px;font-size:14px;font-weight:600}body.site .nav-list li{position:relative}body.site .nav-list ul{list-style:none;margin:0;padding:6px 0 0 10px;display:none;flex-direction:column;gap:6px}body.site .nav-list li.tap>ul{display:flex}body.site .nav-list li.has-children:hover>.nav-parent:after,body.site .nav-list li.tap>.nav-parent:after{transform:rotate(180deg)}body.site .nav-list .nav-parent:after{content:"▾";font-size:12px;opacity:.8;transition:transform .2s ease}body.site .nav-list .nav-parent:hover,body.site .nav-list a:hover{border-color:rgba(67,97,238,.28);box-shadow:0 10px 24px rgba(67,97,238,.08)}body.site .article-card,body.site .content-card,body.site .hero-card,body.site .home-banner,body.site .home-panel,body.site .home-side,body.site .home-slab,body.site .home-tile,body.site .home-wide,body.site .list-card{border:1px solid rgba(23,32,51,.1);border-radius:22px;background:rgba(255,255,255,.88);box-shadow:0 18px 42px rgba(23,32,51,.08)}body.site .hero-card{overflow:hidden}body.site .hero-grid{display:grid;grid-gap:14px;gap:14px}body.site .card-pad,body.site .hero-copy{padding:16px}body.site h1{margin:0;font-size:16px;line-height:1.2;letter-spacing:.01em}body.site h2{margin:12px 0 0;font-size:15px;line-height:1.45}body.site .home-grid,body.site .list-grid{display:grid;grid-gap:14px;gap:14px;margin-top:14px}body.site .cover-frame,body.site .home-media{position:relative;overflow:hidden;border-radius:20px;aspect-ratio:16/10;background:#dfe6f7}body.site .cover-frame img,body.site .home-media img{object-fit:cover}body.site .crumbs ol,body.site .home-metrics,body.site .hot-list,body.site .pager,body.site .tag-row{list-style:none;margin:0;padding:0}body.site .home-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px;gap:10px}body.site .crumbs a,body.site .crumbs span,body.site .home-metrics li,body.site .hot-list a,body.site .pager a,body.site .pager span,body.site .tag-row a{display:inline-flex;align-items:center;min-height:38px;border-radius:999px;border:1px solid rgba(23,32,51,.1);background:rgba(247,248,252,.9);padding:8px 12px;font-size:14px}body.site .home-metrics li{justify-content:space-between;background:linear-gradient(180deg,rgba(67,97,238,.08),rgba(255,255,255,.92))}body.site .hot-list,body.site .tag-row{display:grid;grid-gap:8px;gap:8px}body.site .hot-list a,body.site .tag-row a{width:100%}body.site .section-title{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:10px}body.site .section-title h2{margin:0}body.site .section-title .more{font-size:13px;opacity:.76}body.site .crumbs{margin:12px 0 14px}body.site .crumbs ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}body.site .crumbs li{display:inline-flex;align-items:center;gap:8px}body.site .crumbs li+li:before{content:">";opacity:.45}body.site .article-desc,body.site .cat-desc{margin:10px 0 0;font-size:14px;font-weight:500;opacity:.88}body.site .article-top{display:grid;grid-gap:14px;gap:14px}body.site .in-article-toc{margin:14px 0;padding:14px 16px;border:1px solid rgba(23,32,51,.1);border-radius:18px;background:rgba(247,248,252,.92)}body.site .in-article-toc ol{margin:0;padding-left:18px;display:grid;grid-gap:8px;gap:8px}body.site .copy{padding:2px 0 0;overflow-wrap:anywhere}body.site .copy h2{margin-top:24px}body.site .copy blockquote,body.site .copy ol,body.site .copy p,body.site .copy table,body.site .copy ul{margin-top:14px}body.site .copy img{border-radius:18px}body.site .list-item{overflow:hidden}body.site .list-item .meta{display:grid;grid-gap:8px;gap:8px;padding:14px 16px 16px}body.site .pager{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}body.site .pager a,body.site .pager span{min-width:42px;justify-content:center}body.site .friend-links{margin-top:18px;padding:16px;border-top:1px solid rgba(23,32,51,.08)}body.site .friend-links ul{list-style:none;margin:10px 0 0;padding:0;display:grid;grid-gap:8px;gap:8px}body.site .friend-links a{color:rgba(23,32,51,.92);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}body.site .site-footer{width:min(100%,1120px);margin:0 auto;padding:0 14px 24px;color:rgba(23,32,51,.72);font-size:12px}body.site .site-footer .icp{margin-top:8px}body.site .page-section{margin-top:14px}body.site .home-aside,body.site .home-main{display:grid;grid-gap:14px;gap:14px}@media (min-width:769px){body.site .header-row{grid-template-columns:auto 1fr auto}body.site .menu{display:none}body.site .nav-wrap{padding-top:0;padding-bottom:14px}body.site .nav-list{display:flex;flex-direction:row;flex-wrap:wrap;gap:10px;align-items:center}body.site .nav-list>li{position:relative}body.site .nav-list>li:hover>ul{display:flex}body.site .nav-list>li>ul{position:absolute;top:calc(100% + 6px);left:0;z-index:20;min-width:200px;padding:10px;border:1px solid rgba(23,32,51,.12);border-radius:16px;background:#ffffff;box-shadow:0 18px 38px rgba(23,32,51,.16)}body.site .nav-list>li>ul a{width:100%}body.site .hero-grid{grid-template-columns:1.25fr .75fr;align-items:stretch}body.site .home-grid{grid-template-columns:1.1fr .9fr .8fr;grid-auto-rows:minmax(180px,auto)}body.site .home-wide{grid-column:span 2}body.site .home-slab{grid-row:span 2}body.site .home-aside{grid-template-columns:1fr 1fr}body.site .list-grid{grid-template-columns:repeat(2,minmax(0,1fr))}body.site .article-top{grid-template-columns:.95fr 1.05fr;align-items:start}}