:root{--primary:#1a1a1a;--secondary:#555;--accent:#0056b3;--border:#e5e5e5;--bg:#fff;--bg-alt:#f8f9fa}
*{margin:0;padding:0;box-sizing:border-box}
body{font:16px/1.6 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:var(--primary);background:var(--bg);-webkit-font-smoothing:antialiased}
.header{background:var(--bg);padding:24px 20px;border-bottom:1px solid var(--border)}
.header-content{max-width:800px;margin:0 auto;text-align:center}
.site-title{font-size:24px;font-weight:700;margin-bottom:4px;letter-spacing:-.5px}
.site-title a{color:var(--primary);text-decoration:none}
.site-title a:hover{color:var(--accent)}
.site-tagline{font-size:15px;color:var(--secondary);margin:0}
.container{max-width:800px;margin:0 auto;padding:0 20px}
.breadcrumb{font-size:14px;color:var(--secondary);margin:16px 0 12px;text-transform:uppercase;letter-spacing:.5px}
.breadcrumb a{color:var(--secondary);text-decoration:none}
.breadcrumb a:hover{color:var(--accent)}
.post-title{font-size:clamp(32px,5vw,44px);font-weight:700;line-height:1.2;margin:0 0 16px;color:var(--primary)}
.post-meta{display:flex;align-items:center;gap:16px;font-size:14px;color:var(--secondary);margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--border)}
.byline{font-weight:500}
.reading-time{margin-left:auto;font-size:13px;background:#f1f3f5;padding:2px 8px;border-radius:3px}
.content{font-size:18px;line-height:1.7;color:var(--primary)}
.content h2{font-size:26px;font-weight:600;margin:40px 0 16px;color:var(--primary)}
.content h3{font-size:22px;font-weight:600;margin:32px 0 12px;color:var(--primary)}
.content p{margin-bottom:20px}
.content a{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}
.content a:hover{text-decoration-thickness:2px}
.content ul,.content ol{margin:20px 0;padding-left:24px}
.content li{margin-bottom:8px}
.content img{max-width:100%;height:auto;border-radius:4px;margin:24px 0;display:block}
.content blockquote{border-left:3px solid var(--accent);padding:16px 20px;margin:24px 0;background:var(--bg-alt);font-style:italic}
.toc{background:#f8f9fa;border:1px solid var(--border);padding:16px 20px;margin:0 0 32px;border-radius:6px;font-size:15px}
.toc h4{font-size:15px;margin-bottom:8px;color:var(--secondary);text-transform:uppercase;letter-spacing:.5px}
.toc ul{list-style:none;margin:0;padding-left:0}
.toc li{margin:4px 0}
.toc a{color:var(--primary);text-decoration:none}
.toc a:hover{color:var(--accent);text-decoration:underline}
.cta{background:linear-gradient(135deg,#1e3a8a 0%,#3b82f6 100%);color:#fff;text-align:center;padding:40px 20px;margin:40px 0}
.cta .cta-head{font-size:24px;margin-bottom:12px;font-weight:600}
.cta p{margin-bottom:20px;opacity:.9}
.cta-btn{background:#fbbf24;color:#1e3a8a;padding:12px 24px;border-radius:6px;font-weight:600;text-decoration:none;display:inline-block;transition:all .2s;border:0;cursor:pointer}
.cta-btn:hover{background:#f59e0b;transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.15)}
.related{background:var(--bg-alt);padding:40px 20px;margin-top:40px}
.related-content{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:40px}
.related h3{font-size:20px;color:var(--primary);margin-bottom:16px;font-weight:600}
.related ul{list-style:none}
.related li{margin-bottom:12px}
.related a{color:var(--primary);text-decoration:none;font-size:16px;line-height:1.4;display:block;transition:color .2s}
.related a:hover{color:var(--accent)}
.footer{background:var(--primary);color:#aaa;text-align:center;padding:24px 20px;font-size:14px}
@media(max-width:768px){
.header{padding:20px 16px}
.container{padding:0 16px}
.post-title{font-size:28px}
.content{font-size:17px}
.related-content{grid-template-columns:1fr;gap:32px}
.cta{padding:32px 16px}
.toc{padding:12px 16px;margin-bottom:24px}
}
@media(max-width:480px){
.header{padding:16px 12px}
.container{padding:0 12px}
.site-title{font-size:22px}
.post-title{font-size:24px}
.content{font-size:16px}
.post-meta{flex-direction:column;align-items:flex-start;gap:8px}
.reading-time{margin-left:0;margin-top:4px}
}