body.site{margin:0;color:#102032;background:radial-gradient(circle at top left,rgba(59,130,246,.16),transparent 34%),radial-gradient(circle at 100% 0,rgba(20,184,166,.12),transparent 30%),linear-gradient(180deg,#f6f9fc,#eef4f8);font-family:var(--font-serif),Georgia,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(100% - 28px));margin:0 auto}body.site .site-header{position:-webkit-sticky;position:sticky;top:0;z-index:20;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:rgba(246,249,252,.88);border-bottom:1px solid rgba(16,32,50,.08)}body.site .site-header-inner{width:min(1120px,calc(100% - 28px));margin:0 auto;min-height:64px;display:flex;align-items:center;gap:12px}body.site .brand{min-width:0;flex:1 1 auto;font-size:16px;font-weight:700;letter-spacing:.02em;line-height:1.2}body.site .brand h1,body.site .brand-link{margin:0;font-size:16px;line-height:1.2;font-weight:700;color:#102032}body.site .brand-link{display:inline-flex;align-items:center;gap:8px}body.site .menu{flex:0 0 auto;-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(16,32,50,.16);background:#ffffff;color:#102032;border-radius:999px;padding:10px 12px;line-height:1;box-shadow:0 10px 24px rgba(16,32,50,.08)}body.site .nav-wrap{width:100%}body.site .nav-list{list-style:none;margin:0;padding:10px 14px 16px;display:none;gap:8px;flex-direction:column}body.site.nav-open .nav-list{display:flex}body.site .nav-list>li{position:relative}body.site .nav-list>li>a,body.site .nav-list>li>button{width:100%;display:flex;align-items:center;justify-content:space-between;gap:8px;border:1px solid rgba(16,32,50,.12);background:rgba(255,255,255,.92);color:#102032;border-radius:14px;padding:11px 14px;font:inherit}body.site .nav-list>li.has-children>a:after,body.site .nav-list>li.has-children>button:after{content:"▾";font-size:12px;opacity:.65}body.site .nav-list>li ul{list-style:none;margin:8px 0 0;padding:8px;display:none;background:#ffffff;border:1px solid rgba(16,32,50,.12);border-radius:14px;box-shadow:0 18px 42px rgba(16,32,50,.12)}body.site .nav-list>li.tap>ul{display:block}body.site .nav-list>li ul a{display:block;padding:10px 12px;border-radius:10px}body.site .content{width:min(1120px,calc(100% - 28px));margin:18px auto 48px}body.site .article-card,body.site .copy,body.site .hero-card,body.site .list-card,body.site .panel,body.site .tile,body.site .toc-card{background:rgba(255,255,255,.9);border:1px solid rgba(16,32,50,.1);box-shadow:0 18px 50px rgba(16,32,50,.08);border-radius:22px}body.site .home-grid{display:grid;grid-gap:16px;gap:16px}body.site .hero-card{overflow:hidden}body.site .hero-copy{padding:18px}body.site h1{margin:0;font-size:16px;line-height:1.35;letter-spacing:.01em}body.site h2{margin:0;font-size:15px;line-height:1.5}body.site .article-card p,body.site .hero-card p,body.site .list-card p,body.site .panel p,body.site .tile p{margin:0;line-height:1.75;color:rgba(16,32,50,.78)}body.site .hero-media{aspect-ratio:16/10;position:relative}body.site .section-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:24px 0 12px}body.site .section-head a{color:#2563eb;font-size:13px}body.site .tiles{display:grid;grid-gap:14px;gap:14px}body.site .tile{overflow:hidden}body.site .tile .thumb{aspect-ratio:4/3;position:relative}body.site .tile .body{padding:14px}body.site .article-list,body.site .friend-list,body.site .hot-list,body.site .tag-list{list-style:none;margin:0;padding:0}body.site .hot-list,body.site .tag-list{display:grid;grid-gap:10px;gap:10px}body.site .friend-list a,body.site .hot-list a,body.site .tag-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.9);border:1px solid rgba(16,32,50,.1)}body.site .article-layout{display:grid;grid-gap:16px;gap:16px}body.site .breadcrumbs ol{list-style:none;margin:0 0 14px;padding:0;display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:13px;color:rgba(16,32,50,.7)}body.site .breadcrumbs li+li:before{content:">";margin-right:6px;color:rgba(16,32,50,.42)}body.site .article-head,body.site .list-head{margin-bottom:14px}body.site .article-desc,body.site .cat-desc{margin-top:8px;font-size:14px;line-height:1.8;color:rgba(16,32,50,.76)}body.site .toc-card{padding:14px}body.site .toc-card ol{margin:0;padding-left:18px;display:grid;grid-gap:8px;gap:8px}body.site .toc-card a{color:#2563eb}body.site .copy{padding:18px;line-height:1.9;overflow:hidden}body.site .copy h2{margin:1.2em 0 .55em;scroll-margin-top:86px}body.site .copy ol,body.site .copy p,body.site .copy ul{margin:0 0 1em}body.site .copy img{border-radius:18px;margin:18px 0}body.site .pager{margin-top:18px}body.site .pager nav{display:flex;justify-content:center}body.site .pager a,body.site .pager span{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border-radius:999px;margin:0 4px;background:rgba(255,255,255,.88);border:1px solid rgba(16,32,50,.1)}body.site #friend-links{margin-top:28px;padding:18px}body.site #friend-links ul{list-style:none;margin:0;padding:0;display:grid;grid-gap:10px;gap:10px}body.site .site-footer{width:min(1120px,calc(100% - 28px));margin:0 auto 28px;padding-top:8px;font-size:12px;color:rgba(16,32,50,.62)}body.site .site-footer a{color:inherit}@media (min-width:769px){body.site .site-header-inner{min-height:76px}body.site .menu{display:none}body.site .nav-wrap{flex:0 0 auto;width:auto}body.site .nav-list{display:flex!important;flex-direction:row;align-items:center;padding:0;gap:10px}body.site .nav-list>li>a,body.site .nav-list>li>button{width:auto;padding:10px 14px}body.site .nav-list>li ul{position:absolute;top:calc(100% + 8px);left:0;min-width:220px}body.site .nav-list>li:hover>ul{display:block}body.site .home-grid{grid-template-columns:1.2fr .8fr;align-items:start}body.site .hero-card{grid-column:1/-1}body.site .tiles{grid-template-columns:repeat(3,minmax(0,1fr))}body.site .article-layout{grid-template-columns:minmax(0,1fr) 260px;align-items:start}body.site .toc-card{position:-webkit-sticky;position:sticky;top:96px}body.site .list-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:14px;gap:14px}}