body.site{margin:0;color:#172033;background:radial-gradient(circle at top,rgba(78,113,255,.12),transparent 28%),linear-gradient(180deg,#f4f7ff,#eef3fb 42%,#f8fafc);font-family:var(--font-serif),Georgia,"Times New Roman",serif}body.site a{color:inherit;text-decoration:none}body.site img{display:block;max-width:100%}body.site .site-shell{width:min(100%,1180px);margin:0 auto;padding:14px 14px 40px}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(244,247,255,.88);border-bottom:1px solid rgba(34,48,80,.08)}body.site .site-header-inner{width:min(100%,1180px);margin:0 auto;padding:12px 14px;display:flex;align-items:center;gap:12px;position:relative}body.site .brand{min-width:0;flex:1 1 auto}body.site .brand a,body.site .brand h1{margin:0;font-size:16px;line-height:1.2;letter-spacing:.08em;text-transform:none;color:#13213d}body.site .menu{flex:0 0 auto;border:1px solid rgba(31,42,70,.14);background:#ffffff;color:#13213d;border-radius:999px;width:42px;height:42px;padding:0;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 8px 22px rgba(17,27,52,.08)}body.site .menu:before{content:"☰";font-size:18px;line-height:1}body.site.nav-open .menu:before{content:"×";font-size:22px}body.site .main-nav{position:absolute;left:14px;right:14px;top:calc(100% + 10px);background:#ffffff;border:1px solid rgba(31,42,70,.12);border-radius:18px;box-shadow:0 18px 34px rgba(20,34,66,.12);display:none;overflow:hidden}body.site.nav-open .main-nav{display:block}body.site .nav-list{list-style:none;margin:0;padding:8px;display:grid;grid-gap:4px;gap:4px}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;min-height:42px;padding:10px 12px;border-radius:12px;color:#172033;background:rgba(230,236,248,.6)}body.site .nav-list>li.tap>.subnav{display:block}body.site .subnav{display:none;list-style:none;margin:0;padding:6px 0 4px 10px}body.site .subnav a{display:block;padding:10px 12px;border-radius:10px;color:#42506f}body.site .crumbs{margin:18px 0 16px}body.site .crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px;align-items:center;color:#5a6787;font-size:13px}body.site .crumbs li{display:inline-flex;align-items:center;gap:6px}body.site .crumbs li+li:before{content:">";color:#90a0c4}body.site .hero{display:grid;grid-gap:14px;gap:14px;margin-top:12px}body.site .article-card,body.site .friend-box,body.site .hero-card,body.site .list-card,body.site .panel,body.site .toc-card{background:rgba(255,255,255,.8);border:1px solid rgba(38,54,92,.1);border-radius:22px;box-shadow:0 18px 40px rgba(31,45,84,.06)}body.site .hero-card{overflow:hidden}body.site .hero-copy{padding:18px}body.site h1{margin:0;font-size:16px;line-height:1.25;color:#12203d}body.site .article-desc,body.site .cat-desc,body.site .hero-copy h2{margin:10px 0 0;font-size:14px;line-height:1.8;font-weight:400;color:#4a5878}body.site .hero-media{aspect-ratio:16/10;overflow:hidden}body.site .cover img,body.site .hero-media img{width:100%;height:100%;object-fit:cover}body.site .home-grid{display:grid;grid-gap:14px;gap:14px;margin-top:14px}body.site .panel{padding:16px}body.site .panel h2,body.site .section-title{margin:0 0 12px;font-size:15px;line-height:1.3;color:#13213d}body.site .article-list,body.site .blocks-grid,body.site .friend-links,body.site .hot-list,body.site .tags-list{list-style:none;padding:0;margin:0}body.site .blocks-grid{display:grid;grid-gap:12px;gap:12px}body.site .block-item{border-radius:18px;overflow:hidden;border:1px solid rgba(34,48,80,.09);background:#fff}body.site .block-media{aspect-ratio:16/9;overflow:hidden;background:#dfe7f7}body.site .block-copy{padding:14px}body.site .article-list a,body.site .block-copy h3,body.site .hot-list a,body.site .tags-list a{margin:0;font-size:14px;line-height:1.5}body.site .article-list,body.site .hot-list{display:grid;grid-gap:10px;gap:10px}body.site .article-list a,body.site .hot-list a{display:block;padding:12px 14px;border-radius:14px;background:linear-gradient(180deg,#f8fbff,#eef4ff)}body.site .tags-list{display:flex;flex-wrap:wrap;gap:10px}body.site .tags-list a{display:inline-flex;align-items:center;min-height:36px;padding:0 12px;border-radius:999px;background:#e9effd;color:#344567}body.site .pager{margin:18px 0 0;display:flex;justify-content:center}body.site .pager a,body.site .pager span{display:inline-flex;align-items:center;justify-content:center;min-width:42px;height:42px;margin:0 4px;padding:0 12px;border-radius:999px;border:1px solid rgba(31,42,70,.12);background:#fff}body.site .article-layout{display:grid;grid-gap:14px;gap:14px}body.site .article-card{padding:16px}body.site .cover{border-radius:18px;overflow:hidden;margin:0 0 14px;aspect-ratio:16/9}body.site .toc-card{padding:14px 16px}body.site .in-article-toc ol{list-style:decimal;margin:0;padding:0 0 0 18px;display:grid;grid-gap:8px;gap:8px;color:#3a4a69}body.site .copy{margin-top:16px;font-size:14px;line-height:1.9;color:#22304d}body.site .copy h2{margin:1.4em 0 .6em;font-size:15px;line-height:1.35;color:#15213f}body.site .copy blockquote,body.site .copy ol,body.site .copy p,body.site .copy ul{margin-top:0;margin-bottom:1em}body.site .friend-box{margin-top:14px;padding:16px}body.site #friend-links ul{list-style:none;padding:0;margin:0;display:grid;grid-gap:10px;gap:10px}body.site #friend-links a{display:block;padding:12px 14px;border-radius:14px;background:#eef3ff}@media (min-width:769px){body.site .site-shell{padding:22px 18px 56px}body.site .site-header-inner{padding:14px 18px}body.site .menu{display:none}body.site .main-nav{display:block;position:static;flex:0 0 auto;background:transparent;border:0;box-shadow:none;overflow:visible}body.site .nav-list{padding:0;display:flex;align-items:center;gap:10px}body.site .nav-list>li>a,body.site .nav-list>li>span{background:transparent;min-height:40px;padding:8px 10px}body.site .subnav{position:absolute;left:0;top:calc(100% + 6px);min-width:180px;background:#ffffff;border:1px solid rgba(31,42,70,.12);border-radius:14px;box-shadow:0 16px 28px rgba(20,34,66,.12);padding:8px}body.site .nav-list>li:hover>.subnav{display:block}body.site .hero{grid-template-columns:1.08fr .92fr;align-items:stretch}body.site .home-grid{grid-template-columns:1.2fr .8fr;align-items:start}body.site .blocks-grid{grid-template-columns:repeat(2,minmax(0,1fr))}body.site .article-layout{grid-template-columns:.72fr 1.28fr;align-items:start}body.site .article-card{order:2}body.site .toc-card{order:1;position:-webkit-sticky;position:sticky;top:92px}}