body.site{--font-serif:var(--font-serif,Georgia,"Times New Roman",serif);--bg:#f4f7fb;--panel:#ffffff;--ink:#13233a;--muted:#5c6c82;--line:#d5deea;--accent:#2457ff;--accent-2:#0f8f7a;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;margin:0}body.site a{color:inherit;text-decoration:none}body.site img{max-width:100%;display:block}body.site .shell{width:min(100%,1200px);margin:0 auto;padding:0 16px 36px}body.site .site-header{position:-webkit-sticky;position:sticky;top:0;z-index:20;background:rgba(244,247,251,.94);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}body.site .header-row{width:min(100%,1200px);margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:12px;justify-content:space-between}body.site .brand{display:inline-flex;align-items:center;gap:10px;min-width:0}body.site .brand-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 10px 22px rgba(36,87,255,.18);flex:0 0 auto}body.site .brand-name{line-height:1.2;font-weight:700;letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}body.site .brand-name,body.site h1{font-family:var(--font-serif);font-size:16px}body.site h1{line-height:1.25;margin:0}body.site .menu{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:999px;padding:10px 14px;font-size:14px;line-height:1;box-shadow:0 8px 18px rgba(19,35,58,.05)}body.site .nav-wrap{width:min(100%,1200px);margin:0 auto;padding:0 16px 12px}body.site .nav-list{display:none;margin:0;padding:0;list-style:none;gap:8px}body.site.nav-open .nav-list{display:grid}body.site .nav-list>li{position:relative}body.site .nav-list>li>a,body.site .nav-list>li>span{display:flex;align-items:center;min-height:42px;padding:0 14px;border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:0 8px 20px rgba(19,35,58,.04)}body.site .nav-list .subnav{display:none;margin:8px 0 0;padding:8px;list-style:none;border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:0 12px 24px rgba(19,35,58,.08)}body.site .nav-list li.tap>.subnav{display:grid;grid-gap:6px;gap:6px}body.site .nav-list .subnav a{display:block;padding:10px 12px;border-radius:10px;color:var(--muted);background:#f8fbff}body.site .page{padding-top:16px}body.site .crumbs{margin:0 0 12px}body.site .crumbs ol,body.site .friend-links ul,body.site .toc ol{list-style:none;padding:0;margin:0}body.site .crumbs ol{display:flex;flex-wrap:wrap;gap:6px;color:var(--muted);font-size:13px}body.site .crumbs li+li:before{content:">";margin-right:6px;color:#97a6ba}body.site .hero{display:grid;grid-gap:14px;gap:14px;align-items:end}body.site .article-card,body.site .card,body.site .hero-card,body.site .panel{background:var(--panel);border:1px solid var(--line);border-radius:22px;box-shadow:0 16px 36px rgba(19,35,58,.06)}body.site .article-body,body.site .card-body,body.site .content,body.site .hero-copy,body.site .panel-body{padding:16px}body.site .hero-copy h1{font-size:16px;margin-bottom:8px}body.site .article-body,body.site .article-desc,body.site .card p,body.site .cat-desc,body.site .hero-copy p,body.site .panel p{color:var(--muted);line-height:1.7;margin:0}body.site .article-desc,body.site .cat-desc{font-size:14px;margin-top:8px}body.site .feature-grid,body.site .hot-grid,body.site .list-grid,body.site .tag-grid{display:grid;grid-gap:12px;gap:12px}body.site .feature-grid{margin-top:16px}body.site .block-media{overflow:hidden;border-radius:22px 22px 0 0}body.site .block-body h2,body.site .card h2,body.site .hot-grid h2,body.site .tag-grid h2{font-size:15px;margin:0 0 8px}body.site .block-body{padding:16px}body.site .block-body .html-copy{color:var(--muted);line-height:1.75}body.site .hot-grid a,body.site .list-grid a,body.site .tag-grid a{display:block}body.site .hot-item,body.site .list-item,body.site .tag-item{padding:14px 16px}body.site .hot-item{display:grid;grid-gap:4px;gap:4px}body.site .article-layout{display:grid;grid-gap:16px;gap:16px}body.site .toc{padding:14px 16px}body.site .toc a{color:var(--accent)}body.site .copy{padding:16px;line-height:1.85;color:var(--ink);overflow-wrap:anywhere}body.site .copy h2{font-family:var(--font-serif);font-size:15px;margin:26px 0 10px}body.site .copy ol,body.site .copy p,body.site .copy ul{margin:0 0 14px}body.site .friend-links{margin-top:18px;padding:14px 16px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.72)}body.site .friend-links ul{display:flex;flex-wrap:wrap;gap:10px 14px}body.site .friend-links a{color:var(--muted)}body.site .pager{margin-top:16px;display:flex;gap:10px;justify-content:center}body.site .pager a,body.site .pager span{padding:10px 14px;border:1px solid var(--line);border-radius:999px;background:var(--panel)}body.site .site-footer{width:min(100%,1200px);margin:0 auto;padding:22px 16px 34px;color:var(--muted);font-size:13px}body.site .site-footer .meta{display:flex;gap:10px;flex-wrap:wrap}body.site .site-footer .meta span+span:before{content:"·";margin-right:10px;color:#97a6ba}@media (min-width:769px){body.site .header-row{gap:18px}body.site .nav-wrap{padding-bottom:16px}body.site .nav-list{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-start}body.site .nav-list>li>a,body.site .nav-list>li>span{min-height:44px}body.site .nav-list>li:hover>.subnav{display:grid;position:absolute;left:0;top:calc(100% + 8px);min-width:220px;z-index:30}body.site .hero{grid-template-columns:1.15fr .85fr}body.site .feature-grid{grid-template-columns:1.1fr .9fr .9fr;align-items:stretch}body.site .home-top{display:grid;grid-template-columns:1.25fr .75fr;grid-gap:16px;gap:16px}body.site .list-grid{grid-template-columns:repeat(2,minmax(0,1fr))}body.site .article-layout{grid-template-columns:minmax(0,1fr) 280px;align-items:start}body.site .copy{padding:22px}body.site .friend-links ul{gap:12px 18px}}