body.site{--font-serif:var(--font-serif,Georgia,"Times New Roman",serif);--bg:#f4f7fb;--panel:#ffffff;--panel-soft:#eef3f8;--text:#142233;--muted:#5c6b7c;--line:#d8e1ea;--accent:#215a86;--accent-strong:#123d60;--shadow:0 14px 40px rgba(24,52,84,0.12);margin:0;color:var(--text);background:radial-gradient(circle at top left,rgba(33,90,134,.08),transparent 35%),linear-gradient(180deg,#fbfdff 0,var(--bg) 100%);font-family:var(--font-serif)}body.site a{color:inherit;text-decoration:none}body.site img{display:block;max-width:100%;height:auto}body.site .shell{width:100%}body.site .chrome{position:-webkit-sticky;position:sticky;top:0;z-index:20;background:rgba(244,247,251,.92);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid rgba(216,225,234,.9)}body.site .article-shell,body.site .chrome-inner,body.site .error-shell,body.site .home-shell,body.site .list-shell,body.site .loading-shell,body.site .notfound-shell{width:min(100%,1180px);margin:0 auto;padding:0 16px}body.site .chrome-inner{display:flex;align-items:center;gap:10px;min-height:60px}body.site .brand{min-width:0;flex:1 1 auto;font-size:15px;font-weight:700;letter-spacing:.02em;color:var(--accent-strong)}body.site .brand-link{display:inline-flex;align-items:center;gap:8px}body.site .brand-mark{width:10px;height:10px;border-radius:999px;background:linear-gradient(135deg,var(--accent),#5ba2d8);box-shadow:0 0 0 4px rgba(33,90,134,.12)}body.site .menu{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--line);background:var(--panel);color:var(--accent-strong);border-radius:999px;padding:9px 12px;font:inherit;font-size:14px;line-height:1;box-shadow:0 6px 16px rgba(18,61,96,.08)}body.site .nav-list{display:none}body.site.nav-open .nav-list{display:block}body.site .nav-list{position:absolute;left:16px;right:16px;top:60px;z-index:30;margin:0;padding:10px;list-style:none;background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}body.site .nav-list>li{position:relative;margin:0}body.site .nav-list>li+li{margin-top:4px}body.site .nav-list .nav-label,body.site .nav-list a{display:flex;align-items:center;justify-content:space-between;padding:11px 12px;border-radius:12px;font-size:14px;color:var(--text)}body.site .nav-list .nav-label:hover,body.site .nav-list a:hover{background:var(--panel-soft)}body.site .nav-list>li>.sub-toggle:after{content:"▾";font-size:11px;color:var(--muted)}body.site .nav-list .sub-menu{display:none;margin:4px 0 0;padding:6px;list-style:none;background:#fbfdff;border:1px solid var(--line);border-radius:14px}body.site .nav-list li.tap>.sub-menu{display:block}body.site .nav-list .sub-menu li+li{margin-top:2px}body.site .nav-list .sub-menu a{padding:9px 10px;font-size:13px;color:var(--muted)}body.site .page{padding:18px 0 40px}body.site .breadcrumbs{margin:0 0 14px}body.site .breadcrumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0;color:var(--muted);font-size:13px}body.site .breadcrumbs li+li:before{content:">";margin-right:6px;color:#93a2b2}body.site .hero{display:grid;grid-gap:14px;gap:14px}body.site .card,body.site .copy,body.site .feature,body.site .friend-box,body.site .hero-card,body.site .panel,body.site .tag-cloud,body.site .toc{background:var(--panel);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}body.site .hero-card{overflow:hidden}body.site .hero-media{position:relative;min-height:220px;background:#dfe8f1}body.site .hero-content{padding:16px}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-desc,body.site .cat-desc,body.site .hero-lead{margin:10px 0 0;color:var(--muted);font-size:14px;line-height:1.8}body.site .home-grid{display:grid;grid-gap:14px;gap:14px;margin-top:14px}body.site .panel{padding:16px}body.site .section-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:12px}body.site .section-head h2,body.site .section-head h3{font-size:15px}body.site .section-note{color:var(--muted);font-size:12px}body.site .article-list,body.site .copy ol,body.site .copy ul,body.site .feature-list,body.site .friend-list,body.site .tag-list,body.site .toc ol{margin:0;padding:0;list-style:none}body.site .feature-list{display:grid;grid-gap:12px;gap:12px}body.site .feature{overflow:hidden}body.site .feature-link{display:grid;grid-gap:0;gap:0}body.site .feature-media{position:relative;aspect-ratio:16/10;background:#dde6ee}body.site .feature-body{padding:14px}body.site .article-item h3,body.site .feature-body h3{margin:0;font-size:14px;line-height:1.5}body.site .article-item p,body.site .feature-body p,body.site .tag-cloud p{margin:8px 0 0;color:var(--muted);font-size:13px;line-height:1.75}body.site .article-list{display:grid;grid-gap:10px;gap:10px}body.site .article-item{padding:14px 14px 13px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(180deg,#ffffff,#f8fbfe)}body.site .article-item a{display:block}body.site .tag-cloud{padding:16px}body.site .tag-list{display:flex;flex-wrap:wrap;gap:10px}body.site .tag-list a{display:inline-flex;align-items:center;min-height:34px;padding:0 12px;border-radius:999px;background:var(--panel-soft);color:var(--accent-strong);font-size:13px}body.site .friend-box{margin-top:14px;padding:16px}body.site .friend-box ul{display:grid;grid-gap:8px;gap:8px;margin:0;padding:0;list-style:none}body.site .friend-box a{display:inline-flex;color:var(--muted);font-size:13px}body.site .pager{display:flex;justify-content:space-between;gap:12px;margin-top:16px}body.site .pager a,body.site .pager span{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:var(--panel);font-size:13px}body.site .article-layout{display:grid;grid-gap:14px;gap:14px}body.site .toc{padding:14px 16px}body.site .toc ol{display:grid;grid-gap:8px;gap:8px}body.site .toc a{color:var(--muted);font-size:13px;line-height:1.6}body.site .article-card{overflow:hidden}body.site .article-cover{position:relative;min-height:220px;background:#dce6ef}body.site .article-head{padding:16px}body.site .copy{padding:16px;overflow:hidden}body.site .copy :first-child{margin-top:0}body.site .copy h2{margin:20px 0 10px;font-size:15px;line-height:1.5}body.site .copy p{margin:10px 0;color:var(--text);line-height:1.9;font-size:14px}body.site .copy a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}body.site .copy img{border-radius:16px}body.site .copy blockquote{margin:16px 0;padding:14px 16px;border-left:4px solid var(--accent);background:#f7fbff;color:var(--muted)}body.site .footer-note{margin-top:16px;color:var(--muted);font-size:12px;line-height:1.7}body.site .error-shell,body.site .loading-shell,body.site .notfound-shell{padding-top:40px;padding-bottom:40px}body.site .error-card,body.site .notfound-card{padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}body.site .retry{display:inline-flex;align-items:center;justify-content:center;min-height:40px;margin-top:14px;padding:0 16px;border:0;border-radius:999px;background:var(--accent);color:#fff;font:inherit}@media (min-width:769px){body.site .article-shell,body.site .chrome-inner,body.site .error-shell,body.site .home-shell,body.site .list-shell,body.site .loading-shell,body.site .notfound-shell{padding:0 24px}body.site .chrome-inner{min-height:72px;gap:18px}body.site .menu{display:none}body.site .nav-list{display:flex!important;position:static;flex:0 0 auto;align-items:center;gap:6px;margin-left:auto;padding:0;background:transparent;border:0;box-shadow:none}body.site .nav-list>li+li{margin-top:0}body.site .nav-list>li{padding:10px 0}body.site .nav-list>li>.nav-label,body.site .nav-list>li>a{padding:10px 12px}body.site .nav-list .sub-menu{position:absolute;top:calc(100% + 8px);left:0;min-width:220px;box-shadow:var(--shadow)}body.site .nav-list>li:hover .sub-menu{display:block}body.site .hero{grid-template-columns:1.15fr .85fr;align-items:stretch}body.site .home-grid{grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}body.site .feature-list{grid-template-columns:repeat(2,minmax(0,1fr))}body.site .article-layout{grid-template-columns:minmax(0,260px) minmax(0,1fr);align-items:start}body.site .list-shell .article-list{grid-template-columns:repeat(2,minmax(0,1fr))}body.site .article-cover,body.site .hero-media{min-height:320px}}