:root{
  --background:0 0% 100%; --foreground:240 10% 3.9%;
  --muted:240 4.8% 95.9%; --muted-foreground:240 3.8% 46.1%;
  --border:240 5.9% 90%; --primary:142.1 76.2% 36.3%;
  --primary-foreground:355.7 100% 97.3%; --radius:0.5rem;
  --ink:hsl(var(--foreground)); --sub:hsl(var(--muted-foreground));
  --green:hsl(var(--primary)); --line:hsl(var(--border)); --bg:hsl(var(--background));
  --soft:hsl(var(--muted));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.6}
.container{width:100%;max-width:1120px;margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.2;letter-spacing:-0.02em;font-weight:700}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:hsl(var(--background)/.85);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--line)}
.hdr{height:60px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:16px}
.brand svg{filter:drop-shadow(0 1px 2px rgba(0,0,0,.12))}
.nav{display:flex;gap:26px;margin-left:8px;font-size:14.5px;font-weight:500;color:var(--sub)}
.nav a:hover{color:var(--ink)}
.hdr-cta{margin-left:auto;display:flex;gap:10px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;font-weight:600;font-size:14px;padding:9px 16px;border-radius:var(--radius);transition:.15s;cursor:pointer;white-space:nowrap;border:1px solid transparent}
.btn-primary{background:var(--green);color:hsl(var(--primary-foreground))}
.btn-primary:hover{background:hsl(142.1 76.2% 31%)}
.btn-ghost{color:var(--ink)}
.btn-ghost:hover{background:var(--soft)}
.btn-outline{border-color:var(--line);color:var(--ink);background:#fff}
.btn-outline:hover{background:var(--soft)}
.btn-lg{padding:13px 24px;font-size:15px}

/* blog index */
.blog-hero{padding:64px 0 24px;border-bottom:1px solid var(--line)}
.eyebrow{display:inline-block;color:var(--green);font-weight:700;font-size:13px;letter-spacing:.04em;text-transform:uppercase;margin-bottom:14px}
.blog-hero h1{font-size:44px;margin:0 0 14px}
.blog-hero p{color:var(--sub);font-size:18px;max-width:640px;margin:0}
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;padding-top:44px;padding-bottom:64px}
.card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;display:flex;flex-direction:column;transition:.18s}
.card:hover{box-shadow:0 12px 34px -12px rgba(0,0,0,.16);transform:translateY(-3px)}
.card-img{aspect-ratio:16/9;overflow:hidden;background:var(--soft)}
.card-img img{width:100%;height:100%;object-fit:cover}
.card-body{padding:20px 20px 24px;display:flex;flex-direction:column;gap:10px}
.card-body h3{font-size:18.5px;margin:2px 0}
.card-body p{color:var(--sub);font-size:14.5px;margin:0;flex:1}
.read-link{color:var(--green);font-weight:600;font-size:14px;margin-top:4px}
.post-meta{display:flex;gap:12px;align-items:center;color:var(--sub);font-size:13px;font-weight:500}
.cat{background:hsl(var(--primary)/.1);color:var(--green);padding:3px 10px;border-radius:999px;font-weight:600;font-size:12px}

/* article */
.post{padding-top:36px}
.post-narrow{max-width:760px}
.back{color:var(--sub);font-weight:600;font-size:14px}
.back:hover{color:var(--green)}
.post h1{font-size:40px;margin:18px 0 18px}
.post .post-meta{margin-top:20px}
.lede{font-size:20px;color:#3f3f46;font-weight:450;margin:0 0 8px}
.post-hero-wrap{margin:30px auto 8px}
.post-hero{width:100%;max-width:1120px;aspect-ratio:16/9;object-fit:cover;border-radius:16px;border:1px solid var(--line)}
.post-body{padding-top:14px;padding-bottom:20px}
.post-body h2{font-size:27px;margin:44px 0 16px}
.post-body h3{font-size:20px;margin:30px 0 10px}
.post-body p{font-size:17.5px;color:#27272a;margin:0 0 18px}
.post-body ul,.post-body ol{font-size:17.5px;color:#27272a;padding-left:22px;margin:0 0 20px}
.post-body li{margin:0 0 9px}
.post-body a{color:var(--green);font-weight:600;text-decoration:underline;text-underline-offset:2px}
.pull{border-left:4px solid var(--green);background:var(--soft);margin:28px 0;padding:18px 24px;font-size:20px;font-weight:600;font-style:normal;color:#18181b;border-radius:0 12px 12px 0}
.callout{background:hsl(var(--primary)/.06);border:1px solid hsl(var(--primary)/.25);border-radius:12px;padding:18px 22px;margin:26px 0}
.callout strong{display:block;margin-bottom:6px;color:var(--green)}
.callout p{margin:0;font-size:16px;color:#27272a}
.inline-img{margin:32px 0}
.inline-img img{width:100%;border-radius:14px;border:1px solid var(--line)}
.inline-img figcaption{color:var(--sub);font-size:13.5px;text-align:center;margin-top:10px}

/* faq */
.faq{margin-top:50px;border-top:1px solid var(--line);padding-top:12px}
.faq h2{font-size:27px;margin:26px 0 12px}
.faq-item{border:1px solid var(--line);border-radius:12px;padding:2px 18px;margin-bottom:12px;background:#fff}
.faq-item summary{cursor:pointer;font-weight:600;font-size:17px;padding:14px 0;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:before{content:"+";color:var(--green);font-weight:800;margin-right:12px}
.faq-item[open] summary:before{content:"\2013"}
.faq-item div{padding:0 0 16px;color:#27272a;font-size:16.5px}

/* cta band */
.cta-band{background:linear-gradient(180deg,hsl(var(--muted)) 0%,#fff 100%);border-top:1px solid var(--line);margin-top:56px;padding:64px 0;text-align:center}
.cta-band h2{font-size:32px;margin:0 0 12px}
.cta-band>.container>p{color:var(--sub);font-size:18px;max-width:560px;margin:0 auto 26px}
.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta-fine{color:var(--sub);font-size:13.5px;margin-top:18px!important}

/* footer */
.site-footer{background:#0b0d0f;color:#a1a1aa;padding:56px 0 30px;margin-top:0}
.site-footer .brand{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.foot-brand p{font-size:14px;max-width:300px;margin-top:14px;color:#71717a}
.site-footer h4{color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em;margin:0 0 14px}
.site-footer div a,.site-footer div span{display:block;font-size:14.5px;margin-bottom:9px;color:#a1a1aa}
.site-footer div a:hover{color:#fff}
.foot-legal{border-top:1px solid #1f2226;margin-top:36px;padding-top:22px;font-size:13px;color:#71717a}

@media(max-width:900px){.blog-grid{grid-template-columns:1fr 1fr}.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.nav,.hdr-cta .btn-ghost{display:none}.blog-grid{grid-template-columns:1fr}.blog-hero h1{font-size:34px}.post h1{font-size:30px}.post-body h2{font-size:23px}.foot-grid{grid-template-columns:1fr 1fr}}

/* additions */
.hero-fallback{width:100%;height:100%;aspect-ratio:16/9;background:linear-gradient(135deg,#16a34a 0%,#0f9d58 45%,#0080ff 100%);border-radius:16px;border:1px solid var(--line)}
.card-img .hero-fallback{border-radius:0}
.tldr{background:hsl(142.1 76.2% 36.3% / .07);border:1px solid hsl(142.1 76.2% 36.3% / .28)}
.tldr ul{margin:8px 0 2px;padding-left:20px}.tldr li{margin:4px 0;font-size:16px;color:#27272a}
.post-body h2{scroll-margin-top:80px}
.related .card-img{aspect-ratio:16/9}