:root {
  --bg:#0d1117; --surface:#161b22; --surface2:#1f2630; --border:#2d3544;
  --accent:#14b8a6; --accent2:#fb7185; --accent-glow:rgba(20,184,166,0.25);
  --text:#f0f3f7; --muted:#8b97a8; --success:#34d399; --radius:16px;
  --banner-leaderboard-h:90px; --banner-rect-h:250px; --banner-sticky-h:60px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{background:var(--bg);color:var(--text);font-family:'DM Sans',sans-serif;min-height:100vh;overflow-x:hidden;line-height:1.7;padding-bottom:var(--banner-sticky-h);}
body::before{content:'';position:fixed;inset:0;background:radial-gradient(ellipse 60% 50% at 20% 10%,rgba(20,184,166,0.10) 0%,transparent 70%),radial-gradient(ellipse 50% 40% at 80% 80%,rgba(251,113,133,0.06) 0%,transparent 60%);pointer-events:none;z-index:0;}
/* Banner styles */
.banner-leaderboard{position:relative;z-index:5;width:100%;min-height:var(--banner-leaderboard-h);display:flex;align-items:center;justify-content:center;background:rgba(20,184,166,0.04);border-top:1px solid var(--border);border-bottom:1px solid var(--border);overflow:hidden;}
.banner-leaderboard .banner-inner{width:728px;max-width:100%;height:var(--banner-leaderboard-h);display:flex;align-items:center;justify-content:center;}
.banner-rect{width:100%;min-height:var(--banner-rect-h);display:flex;align-items:center;justify-content:center;margin:24px 0;}
.banner-rect .banner-inner{width:300px;height:var(--banner-rect-h);display:flex;align-items:center;justify-content:center;}
.banner-sticky-mobile{display:flex;position:fixed;bottom:0;left:0;right:0;height:var(--banner-sticky-h);background:var(--surface);border-top:1px solid var(--border);align-items:center;justify-content:center;z-index:9000;}
.banner-sticky-mobile .banner-inner{width:728px;max-width:100%;height:50px;display:flex;align-items:center;justify-content:center;}
.banner-placeholder{width:100%;height:100%;border:1px dashed rgba(20,184,166,0.3);border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;background:rgba(20,184,166,0.04);cursor:pointer;text-decoration:none;transition:all 0.2s;overflow:hidden;position:relative;}
.banner-placeholder:hover{border-color:var(--accent);background:rgba(20,184,166,0.08);box-shadow:0 0 20px rgba(20,184,166,0.15);}
.banner-placeholder::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,transparent 40%,rgba(20,184,166,0.06) 100%);pointer-events:none;}
.banner-label{font-size:10px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);opacity:0.6;}
.banner-headline{font-family:'Syne',sans-serif;font-weight:700;color:var(--text);text-align:center;line-height:1.3;}
.banner-cta{font-size:11px;font-weight:600;letter-spacing:1px;text-transform:uppercase;color:var(--accent);padding:4px 12px;border:1px solid var(--accent);border-radius:100px;}
.banner-leaderboard .banner-headline{font-size:16px;} .banner-leaderboard .banner-label{font-size:9px;}
.banner-rect .banner-headline{font-size:15px;}
.banner-sticky-mobile .banner-placeholder{border-radius:0;border:none;border-top:1px dashed rgba(20,184,166,0.3);}
.banner-sticky-mobile .banner-headline{font-size:12px;} .banner-sticky-mobile .banner-label{display:none;}
.banner-sticky-mobile .banner-cta{font-size:10px;padding:3px 10px;}
/* Header */
header{position:relative;z-index:10;padding:20px 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);backdrop-filter:blur(20px);}
.logo{font-family:'Syne',sans-serif;font-weight:800;font-size:22px;letter-spacing:-0.5px;text-decoration:none;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.logo span{color:var(--text);-webkit-text-fill-color:var(--text);}
.back-link{font-size:13px;color:var(--muted);text-decoration:none;display:flex;align-items:center;gap:6px;transition:color 0.2s;}
.back-link:hover{color:var(--accent);} .back-link svg{width:16px;height:16px;}
/* Hero */
.post-hero{position:relative;z-index:1;padding:56px 20px 0;}
.post-hero-inner{max-width:760px;margin:0 auto;}
.post-breadcrumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:24px;flex-wrap:wrap;}
.post-breadcrumb a{color:var(--muted);text-decoration:none;transition:color 0.2s;}
.post-breadcrumb a:hover{color:var(--accent);}
.post-breadcrumb span{opacity:0.4;}
.post-meta-row{display:flex;align-items:center;gap:12px;margin-bottom:20px;flex-wrap:wrap;}
.post-tag{font-size:11px;font-weight:600;letter-spacing:1px;text-transform:uppercase;color:var(--accent);background:rgba(20,184,166,0.1);border:1px solid rgba(20,184,166,0.25);border-radius:100px;padding:3px 12px;}
.post-date{font-size:13px;color:var(--muted);}
.post-read-time{font-size:13px;color:var(--muted);}
.post-hero h1{font-family:'Syne',sans-serif;font-size:clamp(28px,4.5vw,46px);font-weight:800;line-height:1.12;letter-spacing:-1.5px;margin-bottom:20px;}
.post-hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--accent) 0%,var(--accent2) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
.post-intro{font-size:17px;color:var(--muted);font-weight:300;line-height:1.75;max-width:680px;margin-bottom:40px;}
/* Content */
.post-content{position:relative;z-index:1;max-width:760px;margin:0 auto;padding:48px 24px 80px;}
.post-content h2{font-family:'Syne',sans-serif;font-weight:700;font-size:22px;letter-spacing:-0.4px;margin:40px 0 14px;color:var(--text);}
.post-content h2:first-child{margin-top:0;}
.post-content p{font-size:15.5px;color:var(--muted);line-height:1.85;margin-bottom:18px;}
.post-content p:last-child{margin-bottom:0;}
.post-content strong{color:var(--text);font-weight:600;}
.post-content a{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(20,184,166,0.3);transition:border-color 0.2s;}
.post-content a:hover{border-color:var(--accent);}
.highlight-box{display:flex;gap:16px;align-items:flex-start;background:rgba(52,211,153,0.07);border:1px solid rgba(52,211,153,0.25);border-radius:12px;padding:20px 24px;margin:28px 0;}
.highlight-box .icon{font-size:26px;flex-shrink:0;margin-top:2px;}
.highlight-box h3{font-family:'Syne',sans-serif;font-weight:700;font-size:15px;color:var(--success);margin-bottom:5px;}
.highlight-box p{font-size:14px;color:var(--muted);line-height:1.6;margin:0;}
.stat-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;margin:24px 0;}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px;text-align:center;}
.stat-value{font-family:'Syne',sans-serif;font-weight:800;font-size:26px;color:var(--accent);margin-bottom:4px;}
.stat-label{font-size:11px;color:var(--muted);line-height:1.4;}
.info-box{background:var(--surface2);border:1px solid var(--border);border-radius:10px;padding:16px 20px;margin:20px 0;font-size:14px;color:var(--muted);line-height:1.7;}
.info-box strong{color:var(--accent);}
.cta-box{background:rgba(20,184,166,0.08);border:1px solid rgba(20,184,166,0.3);border-radius:12px;padding:28px 24px;text-align:center;margin-top:48px;}
.cta-box h3{font-family:'Syne',sans-serif;font-weight:800;font-size:20px;margin-bottom:10px;}
.cta-box p{font-size:14px;color:var(--muted);margin-bottom:20px;}
.cta-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:100px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-family:'Syne',sans-serif;font-weight:800;font-size:14px;text-decoration:none;transition:all 0.2s;box-shadow:0 4px 20px rgba(20,184,166,0.35);text-shadow:0 1px 3px rgba(0,0,0,0.4);}
.cta-btn:hover{transform:translateY(-1px);box-shadow:0 8px 28px rgba(20,184,166,0.45);border-bottom:none;}
.post-nav{display:flex;justify-content:flex-start;margin-top:48px;padding-top:32px;border-top:1px solid var(--border);}
.post-nav-link{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--muted);font-size:14px;transition:color 0.2s;}
.post-nav-link:hover{color:var(--accent);}
.post-nav-link svg{width:16px;height:16px;}
/* Footer */
footer{position:relative;z-index:1;border-top:1px solid var(--border);padding:36px 20px;text-align:center;}
.footer-links{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-bottom:14px;}
.footer-links a{font-size:13px;color:var(--muted);text-decoration:none;transition:color 0.2s;}
.footer-links a:hover{color:var(--accent);}
.footer-copy{font-size:12px;color:var(--muted);opacity:0.6;}
/* Mobile */
@media(max-width:600px){
  header{padding:14px 16px;}
  .post-hero{padding:40px 16px 0;}
  .post-content{padding:36px 16px 60px;}
  .stat-row{grid-template-columns:1fr 1fr;}
  .stat-row .stat-card:last-child{grid-column:1/-1;}
  .highlight-box{flex-direction:column;gap:10px;padding:16px;}
  .banner-leaderboard{display:none;}
  footer{padding:28px 16px;}
}

main ul + p, article ul + p { margin-top: 16px; }

/* -- BANNER: WIDE SKYSCRAPER 160x600 ------------------------------- */
.content-shell {
  position: relative; z-index: 1;
  width: 100%; max-width: 1400px; margin: 0 auto; padding: 0 20px;
  display: grid; grid-template-columns: minmax(0, 1fr) 160px;
  gap: 24px; align-items: start;
}
.content-shell > .banner-skyscraper {
  width: 160px; min-height: 600px;
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: 24px;
}
.content-shell > .banner-skyscraper .banner-inner {
  width: 160px; height: 600px;
  position: sticky; top: 24px;
  display: flex; align-items: center; justify-content: center;
}
.banner-skyscraper .banner-headline { font-size: 14px; }
@media (max-width: 1100px) {
  .content-shell { display: block; max-width: none; padding: 0; }
  .content-shell > .banner-skyscraper,
  .banner-skyscraper { display: none; }
}
.content-shell > .banner-skyscraper { align-self: stretch; }