:root{--brand:#1323B2;--brand-dark:#0d1880;--ink:#14162b;--muted:#5b5f78;--line:#e3e6f3;--soft:#f4f6ff;--radius:14px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:17px/1.75 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:#fff}
a{color:var(--brand)}
.wrap{max-width:1000px;margin:0 auto;padding:0 16px}
.narrow{max-width:720px;margin:0 auto;padding:0 16px}
header.top{border-bottom:1px solid var(--line);background:#fff}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
header.top .brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--muted);font-size:14px}
header.top img{height:30px;width:auto;display:block}
header.top nav{display:flex;align-items:center;gap:18px;font-size:15px}
header.top nav a.link{color:var(--ink);text-decoration:none}
.btn{display:inline-block;background:var(--brand);color:#fff;text-decoration:none;font-weight:600;padding:9px 16px;border-radius:10px;white-space:nowrap;font-size:15px;line-height:1.5}
.btn:hover{background:var(--brand-dark)}
.blog-hero{background:linear-gradient(180deg,var(--soft),#fff);padding:48px 0 28px}
h1{font-size:clamp(30px,5vw,42px);line-height:1.15;margin:0 0 12px;letter-spacing:-.02em}
.lead{font-size:19px;color:var(--muted);margin:0}
.posts{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;padding:24px 0 56px}
.post-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-decoration:none;color:var(--ink);background:#fff}
.post-card:hover{border-color:var(--brand)}
.post-card .cat{font-size:13px;font-weight:600;color:var(--brand);text-transform:uppercase;letter-spacing:.05em}
.post-card h2{font-size:21px;line-height:1.3;margin:8px 0}
.post-card p{margin:0 0 14px;color:var(--muted);font-size:16px;line-height:1.6}
.post-card time{margin-top:auto;font-size:14px;color:var(--muted)}
.crumbs{font-size:14px;color:var(--muted);padding:24px 0 0}
.crumbs a{color:var(--muted)}
article.post{padding:12px 0 40px}
article.post .meta{color:var(--muted);font-size:15px;margin:0 0 28px}
article.post h2{font-size:clamp(23px,3.4vw,28px);line-height:1.25;margin:40px 0 12px;letter-spacing:-.01em}
article.post h3{font-size:20px;margin:28px 0 8px}
article.post p,article.post li{color:#25283f}
article.post ul,article.post ol{padding-left:24px}
article.post li{margin:6px 0}
.toc{background:var(--soft);border-radius:var(--radius);padding:16px 22px;margin:0 0 8px}
.toc b{display:block;margin-bottom:4px}
.toc ol{margin:0;padding-left:20px}
.toc li{margin:2px 0;font-size:16px}
.box{border-left:3px solid var(--brand);background:var(--soft);padding:14px 18px;border-radius:0 12px 12px 0;margin:20px 0}
.box p{margin:0}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin:16px 0}
table{width:100%;border-collapse:collapse;font-size:16px;min-width:480px}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--soft);font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
tr:last-child td{border-bottom:0}
code{font:15px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--soft);padding:1px 6px;border-radius:6px}
.cta{background:var(--brand);color:#fff;border-radius:var(--radius);padding:26px 24px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;margin:36px 0 0}
.cta b{display:block;font-size:20px}
.cta span{opacity:.9;font-size:16px}
.cta .btn{background:#fff;color:var(--brand)}
.related{border-top:1px solid var(--line);padding:28px 0 48px}
.related h2{font-size:20px;margin:0 0 12px}
.related ul{margin:0;padding-left:20px}
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between}
footer nav{display:flex;flex-wrap:wrap;gap:8px 18px}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{color:var(--brand)}
@media (max-width:600px){header.top nav a.link{display:none}}