:root{ --text:#161b22; --text-dim:#5b6572; --border:#e4e7eb; --accent:#1470af; --soft:#f6f8fa; }
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html,body{margin:0;padding:0;}
body{background:#fff;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.6;}
h1,h2,h3{font-weight:700;letter-spacing:-0.01em;line-height:1.2;margin:0;color:var(--text);}
p{margin:0;}
a{color:var(--accent);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;display:block;}
.wrap{max-width:1100px;margin-inline:auto;padding-inline:24px;}

/* Header + footer (same as the rest of the site) */
header{border-bottom:1px solid var(--border);}
.header-inner{max-width:1100px;margin-inline:auto;padding:18px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.logo{display:flex;align-items:center;gap:.5rem;color:var(--text);}
.logo:hover{text-decoration:none;}
.logo img{height:28px;width:auto;}
.logo span{font-weight:700;font-size:1.05rem;white-space:nowrap;}
header nav{display:flex;align-items:center;gap:22px;}
header nav a{color:var(--text-dim);font-size:.95rem;font-weight:500;}
header nav a:hover{color:var(--accent);}
header nav a[aria-current="page"]{color:var(--accent);}
.btn{display:inline-block;padding:11px 22px;border-radius:6px;background:var(--accent);color:#fff !important;font-weight:600;font-size:.95rem;white-space:nowrap;}
.btn:hover{opacity:.9;text-decoration:none;}
@media (max-width:640px){ header nav a:not(.btn){display:none;} }
footer{padding-block:30px;border-top:1px solid var(--border);color:var(--text-dim);font-size:.88rem;margin-top:30px;}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;}
footer a{color:var(--text-dim);}
footer a:hover{color:var(--accent);}

/* Blog index */
.blog-hero{padding:64px 0 28px;}
.eyebrow{font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:10px;}
.blog-hero h1{font-size:clamp(2rem,4.6vw,2.9rem);max-width:20ch;}
.blog-hero p.sub{color:var(--text-dim);font-size:1.1rem;max-width:56ch;margin-top:14px;}
.topic-row{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 0;}
.topic{font-size:.8rem;font-weight:600;padding:6px 12px;border-radius:999px;border:1px solid var(--border);color:var(--text-dim);background:#fff;}
.featured{display:grid;grid-template-columns:1fr;gap:0;border:1px solid var(--border);border-radius:14px;overflow:hidden;margin:34px 0 14px;background:#fff;transition:box-shadow .25s ease, transform .25s ease;}
.featured:hover{box-shadow:0 12px 34px rgba(22,27,34,.10);transform:translateY(-3px);}
.featured{align-items:center;}
.featured > a{display:block;}
.featured img{width:100%;height:auto;aspect-ratio:1200/630;}
.featured .f-body{padding:28px;display:flex;flex-direction:column;justify-content:center;}
@media (min-width:860px){ .featured{grid-template-columns:1.1fr 1fr;} .featured .f-body{padding:38px;} }
.cat{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:8px;}
.featured h2{font-size:1.7rem;margin-bottom:12px;}
.featured h2 a, .card h3 a{color:var(--text);}
.featured h2 a:hover, .card h3 a:hover{color:var(--accent);text-decoration:none;}
.excerpt{color:var(--text-dim);}
.meta-line{margin-top:14px;font-size:.84rem;color:var(--text-dim);}
.grid{display:grid;grid-template-columns:1fr;gap:22px;margin:22px 0 10px;}
@media (min-width:700px){ .grid{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1000px){ .grid{grid-template-columns:repeat(3,1fr);} }
.card{border:1px solid var(--border);border-radius:12px;overflow:hidden;background:#fff;display:flex;flex-direction:column;transition:box-shadow .25s ease, transform .25s ease;}
.card:hover{box-shadow:0 10px 28px rgba(22,27,34,.10);transform:translateY(-3px);}
.card img{width:100%;height:auto;aspect-ratio:1200/630;object-fit:cover;}
.card .c-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.card h3{font-size:1.12rem;margin-bottom:8px;}
.card .excerpt{font-size:.94rem;flex:1;}
.card .meta-line{margin-top:12px;}

/* Post */
.post{max-width:740px;margin-inline:auto;padding:44px 24px 10px;}
.crumbs{font-size:.84rem;color:var(--text-dim);margin-bottom:22px;display:flex;flex-wrap:wrap;gap:6px;}
.crumbs a{color:var(--text-dim);}
.crumbs a:hover{color:var(--accent);}
.post h1{font-size:clamp(1.9rem,4.4vw,2.6rem);margin-bottom:14px;}
.dek{font-size:1.18rem;color:var(--text-dim);line-height:1.55;}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;margin:20px 0 26px;font-size:.88rem;color:var(--text-dim);padding-bottom:22px;border-bottom:1px solid var(--border);}
.post-meta .by{display:flex;align-items:center;gap:10px;}
.post-meta .by img{width:34px;height:34px;border-radius:50%;background:var(--soft);}
.post-meta strong{color:var(--text);}
.hero-img{border-radius:12px;border:1px solid var(--border);margin:0 0 28px;width:100%;height:auto;aspect-ratio:1200/630;object-fit:cover;}
.takeaways{background:var(--soft);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:10px;padding:20px 22px;margin:0 0 24px;}
.takeaways h2{font-size:1rem;margin:0 0 8px;}
.takeaways ul{margin:0;padding-left:20px;color:var(--text);}
.takeaways li{margin:6px 0;}
.toc{border:1px solid var(--border);border-radius:10px;padding:18px 22px;margin:0 0 30px;}
.toc h2{font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text-dim);margin:0 0 8px;}
.toc ol{margin:0;padding-left:20px;}
.toc li{margin:5px 0;}
.prose{font-size:1.06rem;line-height:1.75;color:#222a33;}
.prose h2{font-size:1.55rem;margin:44px 0 14px;scroll-margin-top:90px;}
.prose h3{font-size:1.2rem;margin:28px 0 10px;}
.prose p{margin:0 0 18px;}
.prose ul, .prose ol{margin:0 0 20px;padding-left:24px;}
.prose li{margin:8px 0;}
.prose strong{color:var(--text);}
.prose a{text-decoration:underline;text-underline-offset:3px;}
.prose blockquote{margin:24px 0;padding:6px 0 6px 20px;border-left:4px solid var(--accent);color:var(--text-dim);font-style:italic;}
.prose code{background:var(--soft);border:1px solid var(--border);border-radius:5px;padding:1px 6px;font-size:.92em;}
.prose pre{background:#0f1720;color:#e6edf3;border-radius:10px;padding:16px 18px;overflow-x:auto;font-size:.88rem;line-height:1.6;margin:0 0 22px;}
.prose pre code{background:none;border:none;padding:0;color:inherit;}
.callout{background:var(--soft);border:1px solid var(--border);border-radius:10px;padding:18px 20px;margin:24px 0;}
.callout strong:first-child{display:block;margin-bottom:4px;color:var(--accent);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;}
.table-wrap{overflow-x:auto;margin:0 0 22px;border:1px solid var(--border);border-radius:10px;}
.prose table{border-collapse:collapse;width:100%;font-size:.95rem;min-width:520px;}
.prose th, .prose td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--border);vertical-align:top;}
.prose th{background:var(--soft);font-size:.82rem;letter-spacing:.04em;text-transform:uppercase;color:var(--text-dim);}
.prose tr:last-child td{border-bottom:none;}
.faq{margin:44px 0 0;}
.faq h2{font-size:1.55rem;margin-bottom:16px;}
.faq details{border:1px solid var(--border);border-radius:10px;margin-bottom:10px;background:#fff;}
.faq summary{cursor:pointer;padding:16px 18px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:14px;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";color:var(--accent);font-size:1.3rem;line-height:1;}
.faq details[open] summary::after{content:"\2212";}
.faq .a{padding:0 18px 16px;color:var(--text-dim);}
.author-box{display:flex;gap:16px;align-items:flex-start;border:1px solid var(--border);border-radius:12px;padding:22px;margin:44px 0 0;background:var(--soft);}
.author-box img{width:56px;height:56px;border-radius:50%;flex:none;background:#fff;}
.author-box h2{font-size:1.05rem;margin:0 0 4px;}
.author-box p{color:var(--text-dim);font-size:.95rem;}
.post-cta{margin:34px 0 0;padding:30px;border:1px solid var(--border);border-radius:14px;text-align:center;background:linear-gradient(180deg,#fff,var(--soft));}
.post-cta h2{font-size:1.4rem;margin-bottom:8px;}
.post-cta p{color:var(--text-dim);margin:0 auto 18px;max-width:46ch;}
.related{max-width:1100px;margin:54px auto 0;padding:0 24px;}
.related h2{font-size:1.3rem;margin-bottom:6px;}

@media (prefers-reduced-motion:reduce){ .featured, .card{transition:none;} .featured:hover, .card:hover{transform:none;} }