body.site{margin:0;color:#0f172a;background:radial-gradient(circle at top,rgba(59,130,246,.12),transparent 38%),linear-gradient(180deg,#f8fbff,#eef4fb 58%,#f6f8fc);font-family:var(--font-serif),Georgia,serif;line-height:1.65}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:min(100%,1200px);margin:0 auto;padding:0 14px 28px}body.site .site-header{position:-webkit-sticky;position:sticky;top:0;z-index:40;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:rgba(248,251,255,.86);border-bottom:1px solid rgba(15,23,42,.08)}body.site .header-row{width:min(100%,1200px);margin:0 auto;padding:12px 14px;display:flex;align-items:center;gap:12px}body.site .brand{min-width:0;flex:1 1 auto;display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.02em;color:#0b1b33}body.site .brand-mark{width:10px;height:10px;border-radius:999px;background:linear-gradient(135deg,#2563eb,#14b8a6);box-shadow:0 0 0 6px rgba(37,99,235,.08);flex:0 0 auto}body.site h1{margin:0;font-size:16px;line-height:1.25}body.site .brand-link{font-size:16px;line-height:1.25;font-weight:700}body.site .menu{width:42px;height:42px;border:1px solid rgba(15,23,42,.12);border-radius:12px;background:#fff;color:#0f172a;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 8px 24px rgba(15,23,42,.06)}body.site .menu:before{content:"☰";font-size:18px;line-height:1}body.site.nav-open .menu:before{content:"×";font-size:24px}body.site .nav-wrap{width:min(100%,1200px);margin:0 auto;padding:0 14px 12px}body.site .nav-list{list-style:none;margin:0;padding:0;display:none;gap:8px;flex-wrap:wrap}body.site.nav-open .nav-list{display:flex}body.site .nav-item{position:relative}body.site .nav-link,body.site .nav-parent{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border-radius:999px;border:1px solid rgba(15,23,42,.1);background:rgba(255,255,255,.8);box-shadow:0 6px 18px rgba(15,23,42,.04)}body.site .nav-parent{gap:6px}body.site .nav-caret{font-size:11px;opacity:.65}body.site .nav-children{list-style:none;margin:8px 0 0;padding:8px;display:none;gap:6px;position:static;background:#fff;border:1px solid rgba(15,23,42,.1);border-radius:14px;box-shadow:0 14px 30px rgba(15,23,42,.12)}body.site .nav-item.tap>.nav-children{display:grid}body.site .page{padding-top:18px}body.site .crumbs{margin:0 0 16px}body.site .crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;color:#49607c;font-size:13px}body.site .crumbs li+li:before{content:">";margin-right:8px;color:rgba(73,96,124,.7)}body.site .article-shell,body.site .hero,body.site .list-shell,body.site .panel{border:1px solid rgba(15,23,42,.08);background:rgba(255,255,255,.84);border-radius:22px;box-shadow:0 14px 34px rgba(15,23,42,.08)}body.site .hero{overflow:hidden;display:grid;grid-gap:0;gap:0}body.site .card-media,body.site .hero-media{position:relative;overflow:hidden;background:#d9e6f5}body.site .hero-media{min-height:220px}body.site .hero-copy{padding:18px}body.site .hero-copy h2{margin:8px 0 0;font-size:18px;line-height:1.35}body.site .hero-kicker{display:inline-flex;padding:5px 10px;border-radius:999px;background:rgba(37,99,235,.1);color:#1d4ed8;font-size:12px;letter-spacing:.02em}body.site .grid-a,body.site .grid-b,body.site .grid-c{display:grid;grid-gap:14px;gap:14px;margin-top:14px}body.site .card,body.site .hot-card,body.site .list-card,body.site .tag-card{border:1px solid rgba(15,23,42,.08);background:rgba(255,255,255,.92);border-radius:18px;overflow:hidden;box-shadow:0 10px 24px rgba(15,23,42,.06)}body.site .card-body,body.site .hot-card,body.site .list-card-body,body.site .tag-card{padding:14px}body.site .card h3,body.site .hot-card h3,body.site .list-card h3,body.site .tag-card h3{margin:0;font-size:15px;line-height:1.4}body.site .card p,body.site .panel p{margin:8px 0 0;color:#44556b;font-size:14px}body.site .section-title{margin:20px 0 12px;font-size:15px;letter-spacing:.02em;color:#0f172a}body.site .friend-list,body.site .hot-list,body.site .tag-list{list-style:none;margin:0;padding:0;display:grid;grid-gap:10px;gap:10px}body.site .friend-links{margin-top:18px;padding:16px}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:#12345a}body.site .page-title{margin:0 0 10px;font-size:16px;line-height:1.3}body.site .article-desc,body.site .cat-desc{margin:0 0 14px;color:#44556b;font-size:14px;font-weight:500}body.site .article-shell,body.site .list-shell{padding:16px}body.site .list-grid,body.site .list-item{display:grid;grid-gap:12px;gap:12px}body.site .list-item .card-media{border-radius:14px;min-height:180px}body.site .copy{margin-top:18px;color:#132238}body.site .copy h2{margin:24px 0 10px;font-size:18px;line-height:1.35}body.site .copy ol,body.site .copy p,body.site .copy ul{margin:0 0 14px}body.site .copy img{border-radius:16px}body.site .in-article-toc{margin:0 0 18px;padding:14px;border-radius:18px;background:rgba(37,99,235,.06);border:1px solid rgba(37,99,235,.12)}body.site .in-article-toc ol{margin:0;padding-left:18px;display:grid;grid-gap:8px;gap:8px}body.site .pager{margin-top:18px}body.site .pager,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:38px;padding:0 12px;border-radius:10px;border:1px solid rgba(15,23,42,.1);background:rgba(255,255,255,.86)}body.site .error-box{padding:48px 16px;text-align:center}@media (min-width:769px){body.site .header-row{padding:16px 14px}body.site .nav-wrap{padding-bottom:16px}body.site .site-header{position:-webkit-sticky;position:sticky}body.site .nav-list{display:flex;align-items:center;gap:10px}body.site .nav-item:hover>.nav-children{display:grid}body.site .nav-children{position:absolute;left:0;top:100%;min-width:220px}body.site .hero{grid-template-columns:1.25fr .95fr}body.site .hero-media{min-height:420px}body.site .hero-copy{display:flex;flex-direction:column;justify-content:center;padding:32px}body.site .grid-a{grid-template-columns:1.15fr .85fr}body.site .grid-b{grid-template-columns:repeat(3,minmax(0,1fr))}body.site .grid-c{grid-template-columns:1fr 1fr}body.site .list-grid{grid-template-columns:repeat(2,minmax(0,1fr))}body.site .list-item{grid-template-columns:190px 1fr}}