:root{--site-bg:#eef2f6;--site-panel:#ffffff;--site-ink:#132033;--site-soft:#5f6f87;--site-line:#d8e0ea;--site-accent:#1f6feb;--site-accent-2:#0f9d8a;--site-shadow:0 14px 34px rgba(14,26,48,0.08);--site-radius:18px;--site-gap:16px}body.site{margin:0;color:var(--site-ink);background:radial-gradient(circle at top left,rgba(31,111,235,.1),transparent 30%),radial-gradient(circle at top right,rgba(15,157,138,.1),transparent 26%),var(--site-bg);font-family:var(--font-serif),Georgia,serif;line-height:1.7;text-rendering:optimizeLegibility}body.site a{color:inherit;text-decoration:none}body.site a:hover{color:var(--site-accent)}body.site button{font:inherit}body.site .site-shell{width:min(100%,1180px);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(16px);backdrop-filter:blur(16px);background:rgba(238,242,246,.86);border-bottom:1px solid rgba(216,224,234,.88)}body.site .site-header-inner{width:min(100%,1180px);margin:0 auto;padding:14px;display:grid;grid-gap:12px;gap:12px}body.site .brand{display:inline-flex;align-items:center;gap:10px;min-height:40px;font-weight:700;letter-spacing:.02em;color:var(--site-ink)}body.site .brand-home,body.site .brand-link{font-size:16px;line-height:1.2}body.site h1{margin:0;font-size:16px;line-height:1.25}body.site .menu{justify-self:end;align-self:start;border:1px solid var(--site-line);background:var(--site-panel);color:var(--site-ink);border-radius:999px;padding:10px 14px;box-shadow:0 8px 18px rgba(14,26,48,.06)}body.site .nav-wrap{position:relative}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: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;justify-content:space-between;gap:8px;padding:10px 12px;border:1px solid var(--site-line);border-radius:999px;background:rgba(255,255,255,.78);box-shadow:0 6px 14px rgba(14,26,48,.04)}body.site .nav-list>li.tap>.nav-sub,body.site .nav-list>li:hover>.nav-sub{display:grid}body.site .nav-sub{list-style:none;margin:8px 0 0;padding:10px;display:none;gap:6px;border:1px solid var(--site-line);border-radius:16px;background:var(--site-panel);box-shadow:var(--site-shadow)}body.site .nav-sub a{display:block;padding:8px 10px;border-radius:12px;color:var(--site-ink)}body.site .page{padding:18px 0 30px}body.site .crumbs{margin:0 0 12px}body.site .crumbs ol,body.site .in-article-toc ol,body.site .pager{list-style:none;padding:0;margin:0}body.site .crumbs ol{display:flex;flex-wrap:wrap;gap:6px;color:var(--site-soft);font-size:13px}body.site .crumbs li+li:before{content:">";margin-right:6px;color:var(--site-line)}body.site .article-panel,body.site .card,body.site .hero-panel,body.site .section-panel{background:var(--site-panel);border:1px solid rgba(216,224,234,.9);border-radius:var(--site-radius);box-shadow:var(--site-shadow)}body.site .hero-panel{overflow:hidden}body.site .article-body,body.site .article-head,body.site .card-body,body.site .hero-copy,body.site .list-head,body.site .section-head{padding:16px}body.site .hero-copy{display:grid;grid-gap:10px;gap:10px}body.site .article-head h1,body.site .hero-copy h1,body.site .list-head h1,body.site .section-head h1{font-size:16px;line-height:1.25}body.site .article-desc,body.site .cat-desc,body.site .hero-copy h2{margin:0;font-size:14px;color:var(--site-soft);font-weight:500}body.site .hero-media{display:block}body.site .hero-media img{display:block;width:100%;height:auto}body.site .home-grid{display:grid;grid-gap:16px;gap:16px}body.site .home-feature{overflow:hidden}body.site .home-feature .hero-copy{position:relative}body.site .home-feature .tag-row{display:flex;flex-wrap:wrap;gap:8px}body.site .pill-link,body.site .tag-link{display:inline-flex;align-items:center;min-height:34px;padding:0 12px;border-radius:999px;border:1px solid rgba(31,111,235,.18);background:rgba(31,111,235,.08);color:var(--site-accent);font-size:13px}body.site .meta-grid{display:grid;grid-gap:14px;gap:14px}body.site .section-panel{overflow:hidden}body.site .hot-list,body.site .tag-cloud{list-style:none;margin:0;padding:0 16px 16px;display:grid;grid-gap:10px;gap:10px}body.site .hot-list a{display:block;padding:12px 0;border-bottom:1px solid var(--site-line)}body.site .hot-list li:last-child a{border-bottom:0;padding-bottom:0}body.site .tag-cloud{grid-template-columns:repeat(2,minmax(0,1fr))}body.site .tag-cloud a{display:flex;justify-content:center;align-items:center;min-height:44px;padding:10px;border-radius:14px;background:linear-gradient(180deg,rgba(15,157,138,.12),rgba(15,157,138,.04));border:1px solid rgba(15,157,138,.16)}body.site .block-list{display:grid;grid-gap:16px;gap:16px}body.site .block{overflow:hidden}body.site .block-html{padding:16px}body.site .block-html h2,body.site .block-html h3{margin-top:0}body.site .list-layout{display:grid;grid-gap:16px;gap:16px}body.site .article-list{display:grid;grid-gap:14px;gap:14px}body.site .article-card{overflow:hidden;display:grid}body.site .article-card .card-body{display:grid;grid-gap:8px;gap:8px}body.site .article-card h2{margin:0;font-size:16px}body.site .article-card p{margin:0;color:var(--site-soft)}body.site .article-card .cover{display:block;width:100%;height:auto}body.site .article-panel{overflow:hidden}body.site .article-head{display:grid;grid-gap:10px;gap:10px}body.site .in-article-toc{margin:0 16px 16px;padding:14px;border:1px solid var(--site-line);border-radius:16px;background:rgba(255,255,255,.7)}body.site .in-article-toc ol{display:grid;grid-gap:8px;gap:8px}body.site .in-article-toc a{color:var(--site-accent)}body.site .copy{padding:0 16px 18px}body.site .copy h2{margin:28px 0 12px;font-size:18px;line-height:1.35}body.site .copy blockquote,body.site .copy ol,body.site .copy p,body.site .copy ul{margin:0 0 14px}body.site .pager{margin:20px 0 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}body.site .pager a,body.site .pager span{display:inline-flex;align-items:center;min-height:38px;padding:0 14px;border-radius:999px;border:1px solid var(--site-line);background:rgba(255,255,255,.82)}body.site .friend-links{margin-top:18px;padding:16px;border:1px solid rgba(216,224,234,.9);border-radius:var(--site-radius);background:rgba(255,255,255,.72)}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:var(--site-soft)}body.site .site-footer{padding:10px 0 22px;color:var(--site-soft);font-size:13px}body.site .site-footer a{color:inherit}@media (min-width:769px){body.site .site-header-inner{grid-template-columns:1fr auto;align-items:center}body.site .brand{grid-column:1}body.site .menu{display:none}body.site .nav-wrap{grid-column:1/-1}body.site .nav-list{display:flex;align-items:center}body.site .nav-sub{position:absolute;left:0;top:calc(100% + 8px);min-width:220px;z-index:40}body.site .page{padding-top:24px}body.site .home-grid{grid-template-columns:1.2fr .8fr;align-items:start}body.site .meta-grid{grid-template-columns:1.05fr .95fr}body.site .tag-cloud{grid-template-columns:repeat(3,minmax(0,1fr))}body.site .list-layout{grid-template-columns:1fr 320px;align-items:start}body.site .article-layout{display:grid;grid-template-columns:1fr 260px;grid-gap:16px;gap:16px;align-items:start}body.site .article-panel{min-width:0}}