:root{--ink:#f4f7ff;--muted:#aebbd1;--panel:#111f39;--line:#293c5f;--cyan:#36c8ef;--amber:#ffbd39}*{box-sizing:border-box}body{margin:0;background:#071528;color:var(--ink);font-family:Inter,"Microsoft YaHei",system-ui,sans-serif;line-height:1.8}a{color:var(--cyan)}.seo-nav{height:70px;display:flex;align-items:center;padding:0 max(22px,calc((100vw - 1120px)/2));gap:25px;border-bottom:1px solid #1c3150;background:#081326f2;position:sticky;top:0;z-index:20}.seo-brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:800}.seo-brand img{width:42px;height:42px;border-radius:11px}.seo-nav nav{margin-left:auto;display:flex;gap:18px}.seo-nav nav a{color:#bac6d8;text-decoration:none;font-weight:700}.seo-nav nav a:hover{color:var(--cyan)}.seo-wrap{width:min(940px,calc(100% - 38px));margin:auto}.blog-hero{padding:80px 0 54px;background:radial-gradient(circle at 50% 0,#173a62,#071528 67%)}.eyebrow{color:var(--cyan);font-weight:900;letter-spacing:.14em;font-size:12px}.blog-hero h1,.article-head h1{font-size:clamp(35px,6vw,58px);line-height:1.15;margin:12px 0 20px}.blog-hero p,.article-head>p{color:#c5cfde;font-size:18px;max-width:760px}.blog-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;padding:48px 0 86px}.post-card{padding:27px;background:linear-gradient(145deg,#152440,#101c35);border:1px solid var(--line);border-radius:16px}.post-card time,.article-meta{color:#8095b2;font-size:13px}.post-card h2{font-size:21px;line-height:1.4}.post-card p{color:var(--muted)}.post-card a{font-weight:800;text-decoration:none}.article-head{padding:66px 0 34px;border-bottom:1px solid var(--line)}.breadcrumbs{font-size:13px;color:#8fa3be}.article-body{padding:42px 0 84px;font-size:17px}.article-body h2{font-size:30px;line-height:1.3;margin:52px 0 16px}.article-body h3{font-size:22px;margin:34px 0 10px}.article-body p,.article-body li{color:#d3dbe7}.article-body table{width:100%;border-collapse:collapse;margin:24px 0;background:#0d1a31}.article-body th,.article-body td{border:1px solid #30415f;padding:13px;text-align:left;vertical-align:top}.article-body th{background:#142743}.note,.answer-box{padding:20px 22px;border-radius:12px;background:#122644;border-left:4px solid var(--cyan);margin:24px 0}.answer-box{border-color:var(--amber)}.toc{background:var(--panel);border:1px solid var(--line);padding:22px 26px;border-radius:14px;margin:28px 0}.toc a{display:block;margin:7px 0}.related{border-top:1px solid var(--line);margin-top:52px;padding-top:28px}.related a{display:block;margin:9px 0;font-weight:700}.sources{font-size:14px;color:#9babc1}.seo-footer{border-top:1px solid #213451;padding:34px 0;color:#91a2ba}.seo-footer .seo-wrap{display:flex;justify-content:space-between;gap:20px}.cta{display:inline-flex;padding:13px 22px;border-radius:10px;background:linear-gradient(135deg,#13c1ed,#386cff);color:white!important;text-decoration:none;font-weight:900}@media(max-width:720px){.seo-nav nav a:nth-child(2){display:none}.blog-grid{grid-template-columns:1fr}.seo-footer .seo-wrap{display:block}.article-body{font-size:16px}.article-body table{font-size:14px}.blog-hero{padding-top:56px}}
