/* SoloStack — shared styles */
:root{
  --ink:#0f172a;
  --body:#1e293b;
  --muted:#64748b;
  --accent:#4f46e5;
  --accent-dark:#4338ca;
  --bg:#ffffff;
  --soft:#f8fafc;
  --border:#e2e8f0;
  --maxw:1080px;
  --radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--body);
  background:var(--bg);
  line-height:1.7;
  font-size:18px;
}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;font-weight:700;letter-spacing:-0.01em}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.narrow{max-width:760px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .logo{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:9px;background:var(--accent);color:#fff;font-size:16px;font-weight:800}
.nav-links{display:flex;gap:24px;align-items:center}
.nav-links a{color:var(--body);font-size:15px;font-weight:500}
.nav-links a:hover{color:var(--accent);text-decoration:none}

/* Hero */
.hero{padding:64px 0 40px;background:linear-gradient(180deg,var(--soft),#fff)}
.hero h1{font-size:44px;margin:0 0 16px}
.hero p{font-size:20px;color:var(--muted);max-width:640px;margin:0 0 24px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}

/* Buttons */
.btn{display:inline-block;background:var(--accent);color:#fff;padding:12px 22px;border-radius:10px;font-weight:600;font-size:16px;border:none;cursor:pointer}
.btn:hover{background:var(--accent-dark);text-decoration:none}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--border)}

/* Post grid */
.section{padding:48px 0}
.section h2{font-size:30px;margin:0 0 8px}
.section .sub{color:var(--muted);margin:0 0 28px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.card{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#fff;transition:transform .15s ease,box-shadow .15s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(15,23,42,.08)}
.card .thumb{aspect-ratio:16/9;background:linear-gradient(135deg,#6366f1,#a855f7);display:grid;place-items:center;color:#fff;font-weight:700;font-size:22px;text-align:center;padding:16px}
.card .thumb.alt1{background:linear-gradient(135deg,#0ea5e9,#6366f1)}
.card .thumb.alt2{background:linear-gradient(135deg,#10b981,#0ea5e9)}
.card .thumb.alt3{background:linear-gradient(135deg,#f59e0b,#ef4444)}
.card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.tag{font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--accent)}
.card h3{font-size:20px;margin:0}
.card p{margin:0;color:var(--muted);font-size:15px}
.card a.more{margin-top:auto;font-weight:600;font-size:15px}

/* Article */
.article{padding:48px 0}
.article h1{font-size:38px;margin:0 0 12px}
.post-meta{color:var(--muted);font-size:15px;margin-bottom:28px;display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.post-meta .avatar{width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;display:inline-grid;place-items:center;font-weight:700;font-size:14px}
.prose{font-size:18px}
.prose p{margin:0 0 20px}
.prose h2{font-size:27px;margin:40px 0 14px}
.prose h3{font-size:21px;margin:28px 0 10px}
.prose ul,.prose ol{margin:0 0 20px;padding-left:24px}
.prose li{margin:0 0 8px}
.prose blockquote{margin:24px 0;padding:14px 20px;border-left:4px solid var(--accent);background:var(--soft);color:var(--body);border-radius:0 8px 8px 0}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:16px}
.prose th,.prose td{border:1px solid var(--border);padding:10px 12px;text-align:left}
.prose th{background:var(--soft);font-weight:700}
.prose code{background:var(--soft);padding:2px 6px;border-radius:6px;font-size:15px}
.key-takeaway{background:var(--soft);border:1px solid var(--border);border-radius:12px;padding:18px 22px;margin:24px 0}
.key-takeaway strong{color:var(--ink)}

/* Ad + disclosure */
.ad-slot{margin:32px auto;max-width:760px;min-height:100px;border:1px dashed var(--border);border-radius:10px;display:grid;place-items:center;color:var(--muted);font-size:13px;background:var(--soft)}
.disclosure{font-size:14px;color:var(--muted);background:var(--soft);border:1px solid var(--border);border-radius:10px;padding:12px 16px;margin:0 0 28px}

/* Newsletter */
.cta-band{background:var(--ink);color:#fff;border-radius:var(--radius);padding:36px;text-align:center;margin:40px 0}
.cta-band h2{color:#fff;margin:0 0 8px}
.cta-band p{color:#cbd5e1;margin:0 0 20px}
.cta-form{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.cta-form input{padding:12px 16px;border-radius:10px;border:1px solid #334155;background:#1e293b;color:#fff;min-width:260px;font-size:16px}

/* Footer */
.site-footer{border-top:1px solid var(--border);background:var(--soft);padding:40px 0;margin-top:48px;font-size:15px;color:var(--muted)}
.footer-grid{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.site-footer a{color:var(--body)}
.site-footer .links{display:flex;gap:20px;flex-wrap:wrap}

@media(max-width:640px){
  body{font-size:17px}
  .hero h1{font-size:34px}
  .hero{padding:44px 0 28px}
  .nav-links{gap:14px}
  .nav-links a.hide-sm{display:none}
  .article h1{font-size:30px}
}