body.site{--font-serif:var(--font-serif);margin:0;color:#16212b;background:radial-gradient(circle at top left,rgba(33,96,173,.12),transparent 32%),radial-gradient(circle at top right,rgba(18,150,136,.1),transparent 28%),linear-gradient(180deg,#f7fbff,#eef4f8 56%,#e8eff5);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.65}body.site a{color:inherit;text-decoration:none}body.site img{display:block;max-width:100%;height:auto}body.site .chrome{width:min(100%,1200px);margin:0 auto;padding:14px 14px 40px}body.site .site-header{position:-webkit-sticky;position:sticky;top:0;z-index:30;display:grid;grid-gap:10px;gap:10px;padding:12px 0 14px;background:rgba(247,251,255,.92);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}body.site .brand{display:inline-flex;align-items:center;gap:10px;width:-moz-fit-content;width:fit-content;max-width:100%;color:#112031}body.site .brand-mark{width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,#1e5fb8,#1bb3a7);box-shadow:0 10px 24px rgba(30,95,184,.22);flex:0 0 auto}body.site .brand span{min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}body.site .brand h1,body.site .brand span{font-size:16px;font-weight:800;letter-spacing:.02em}body.site .brand h1{margin:0;line-height:1.2}body.site .menu{align-self:start;justify-self:end;width:42px;height:42px;border:1px solid rgba(17,32,49,.15);border-radius:14px;background:#ffffff;color:#112031;box-shadow:0 8px 20px rgba(18,34,51,.08)}body.site .menu:before{content:"";display:block;width:18px;height:2px;margin:0 auto;background:currentColor;box-shadow:0 -6px 0 currentColor,0 6px 0 currentColor}body.site .nav-list{display:none;margin:0;padding:10px;list-style:none;border:1px solid rgba(17,32,49,.12);border-radius:18px;background:rgba(255,255,255,.96);box-shadow:0 14px 40px rgba(18,34,51,.1)}body.site.nav-open .nav-list{display:grid;grid-gap:8px;gap:8px}body.site .nav-list>li{position:relative}body.site .nav-list>li>a,body.site .nav-list>li>button{display:flex;align-items:center;justify-content:space-between;width:100%;padding:11px 13px;border:1px solid rgba(17,32,49,.1);border-radius:14px;background:#f8fbfd;color:#173047;font-weight:650}body.site .nav-list>li.tap>.nav-sub,body.site .nav-list>li:hover>.nav-sub{display:grid}body.site .nav-sub{display:none;gap:6px;margin:8px 0 0;padding:10px;list-style:none;border:1px solid rgba(17,32,49,.12);border-radius:16px;background:#fff}body.site .nav-sub a{display:block;padding:9px 11px;border-radius:12px;background:#edf4f8;color:#1b3955}body.site .crumbs{margin:14px 0 0}body.site .crumbs ol{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none;color:#5c7184;font-size:13px}body.site .crumbs li{display:inline-flex;align-items:center;gap:6px}body.site .crumbs li+li:before{content:">";color:#91a2b2}body.site main{padding-top:18px}body.site h1{margin:0;font-size:16px;line-height:1.25;font-weight:850}body.site h2{margin:0;line-height:1.35}body.site .hero{display:grid;grid-gap:14px;gap:14px;padding:18px 0 10px}body.site .article-card,body.site .card,body.site .feature,body.site .hero-media,body.site .list-card,body.site .panel{border:1px solid rgba(17,32,49,.1);border-radius:22px;background:rgba(255,255,255,.82);box-shadow:0 16px 40px rgba(21,39,56,.08)}body.site .hero-media{overflow:hidden;min-height:220px}body.site .hero-copy{display:grid;grid-gap:12px;gap:12px;padding:18px}body.site .hero-copy p{margin:0;color:#4b6275}body.site .section-title{margin:26px 0 12px;font-size:15px;font-weight:800;letter-spacing:.02em}body.site .grid-split,body.site .home-grid{display:grid;grid-gap:14px;gap:14px}body.site .panel{padding:16px}body.site .block-html :first-child{margin-top:0}body.site .block-html :last-child{margin-bottom:0}body.site .article-list,body.site .friend-list,body.site .hot-list,body.site .tag-list,body.site .toc-list{margin:0;padding:0;list-style:none}body.site .hot-list{display:grid;grid-gap:10px;gap:10px}body.site .hot-list a{display:block;padding:12px 13px;border-radius:16px;background:#edf5fb;color:#18324b}body.site .tag-list{display:flex;flex-wrap:wrap;gap:10px}body.site .tag-list a{display:inline-flex;padding:9px 12px;border-radius:999px;background:#eff7f4;color:#1d4d46;font-size:13px}body.site .friend-links{margin-top:28px;padding:16px 0 2px}body.site #friend-links ul{display:flex;flex-wrap:wrap;gap:10px}body.site #friend-links a{display:inline-flex;padding:9px 12px;border:1px solid rgba(17,32,49,.1);border-radius:999px;background:#fff;color:#32485d}body.site .article-list{display:grid;grid-gap:14px;gap:14px}body.site .article-card{overflow:hidden}body.site .article-card a{display:grid;grid-gap:0;gap:0}body.site .article-card .thumb{aspect-ratio:16/9;background:#dbe6ee}body.site .article-card .meta{padding:14px 15px 16px}body.site .article-card h2{font-size:15px}body.site .article-desc,body.site .cat-desc{margin-top:10px;color:#4f6476;font-size:14px;font-weight:500}body.site .article-view{display:grid;grid-gap:14px;gap:14px}body.site .article-cover{overflow:hidden;min-height:220px}body.site .article-head{display:grid;grid-gap:10px;gap:10px;padding:18px;background:rgba(255,255,255,.86);box-shadow:0 16px 40px rgba(21,39,56,.08)}body.site .article-head,body.site .in-article-toc{border:1px solid rgba(17,32,49,.1);border-radius:22px}body.site .in-article-toc{padding:16px;background:rgba(255,255,255,.88)}body.site .toc-list{display:grid;grid-gap:8px;gap:8px}body.site .toc-list a{display:block;padding:10px 12px;border-radius:14px;background:#edf5fb;color:#17324b;font-size:14px}body.site .copy{padding:18px;border:1px solid rgba(17,32,49,.1);border-radius:22px;background:rgba(255,255,255,.88);box-shadow:0 16px 40px rgba(21,39,56,.08)}body.site .copy h2{margin:26px 0 12px;font-size:16px}body.site .copy blockquote,body.site .copy ol,body.site .copy p,body.site .copy table,body.site .copy ul{margin:0 0 14px}body.site .pager{display:flex;justify-content:center;margin-top:20px}body.site .pager a,body.site .pager span{display:inline-flex;align-items:center;justify-content:center;min-width:42px;min-height:42px;padding:0 12px;border:1px solid rgba(17,32,49,.12);border-radius:14px;background:#fff}body.site .pager a{color:#1a3a57}body.site .pager span{color:#8aa0b2}body.site .empty{padding:20px 0;color:#607486}body.site .error-box,body.site .loading,body.site .not-found-box{padding:30px 0}body.site .error-box button{margin-top:14px;padding:10px 16px;border:0;border-radius:14px;background:#1f63be;color:#fff}body.site .site-footer{padding:26px 0 14px;color:#647789;font-size:13px}@media (min-width:769px){body.site .chrome{padding-inline:22px}body.site .site-header{grid-template-columns:auto auto 1fr;align-items:center;gap:16px}body.site .menu{display:none}body.site .nav-list{display:flex;justify-content:flex-end;align-items:center;gap:10px;margin-left:auto;padding:0;border:0;background:transparent;box-shadow:none}body.site .nav-list>li{margin:0}body.site .nav-list>li>a,body.site .nav-list>li>button{width:auto;background:#fff}body.site .nav-sub{position:absolute;top:calc(100% + 10px);left:0;min-width:220px;z-index:40}body.site .hero{grid-template-columns:1.2fr .8fr;align-items:stretch}body.site .home-grid{grid-template-columns:1.1fr .9fr;align-items:start}body.site .grid-split{grid-template-columns:1fr 1fr}body.site .article-list{grid-template-columns:repeat(3,minmax(0,1fr))}body.site .article-view{grid-template-columns:minmax(0,1fr) 300px;align-items:start}body.site .in-article-toc{position:-webkit-sticky;position:sticky;top:84px}}