:root{
  --bg:#ffffff;
  --surface:#f7f8fa;
  --border:#e5e8ee;
  --text:#0d1117;
  --muted:#5b6472;
  --accent:#2563eb;
  --accent-dark:#1d4ed8;
  --accent-soft:#eef4ff;
  --radius:14px;
  --max:1080px;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0b0e14;
    --surface:#121722;
    --border:#232a38;
    --text:#e8ecf3;
    --muted:#98a2b3;
    --accent:#5b8cff;
    --accent-dark:#3f74f0;
    --accent-soft:#141c2e;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:17px;color:var(--text);letter-spacing:-.01em}
.brand:hover{text-decoration:none}
.nav{display:flex;gap:22px;margin-left:auto;font-size:15px}
.nav a{color:var(--muted);font-weight:500}
.nav a:hover{color:var(--text);text-decoration:none}
.nav a.active{color:var(--text)}
@media(max-width:760px){.nav{display:none}}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:10px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:.15s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border)}
.btn-ghost:hover{background:var(--surface)}
.btn-sm{padding:8px 15px;font-size:14px}

/* Hero */
.hero{padding:88px 0 72px;text-align:center}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.04em;
  text-transform:uppercase;color:var(--accent);background:var(--accent-soft);
  padding:6px 13px;border-radius:999px;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(34px,5.2vw,56px);line-height:1.1;letter-spacing:-.03em;
  margin:0 0 20px;font-weight:800;
}
.hero p.lead{
  font-size:clamp(16px,2vw,19px);color:var(--muted);max-width:640px;
  margin:0 auto 34px;
}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* Sections */
section{padding:72px 0}
section.alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:640px;margin:0 auto 48px;text-align:center}
.section-head h2{font-size:clamp(26px,3.4vw,36px);letter-spacing:-.02em;margin:0 0 12px;font-weight:750}
.section-head p{color:var(--muted);margin:0;font-size:17px}

/* Grid + cards */
.grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(270px,1fr))}
.card{
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;
}
section.alt .card{background:var(--bg)}
.card h3{margin:0 0 8px;font-size:17px;font-weight:650;letter-spacing:-.01em}
.card p{margin:0;color:var(--muted);font-size:15px}
.card .icon{
  width:38px;height:38px;border-radius:10px;background:var(--accent-soft);
  color:var(--accent);display:flex;align-items:center;justify-content:center;
  font-weight:700;margin-bottom:16px;font-size:16px;
}

/* Steps */
.steps{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));counter-reset:s}
.step{position:relative;padding-left:0}
.step .num{
  width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;
  font-size:14px;margin-bottom:14px;
}
.step h3{margin:0 0 6px;font-size:16px}
.step p{margin:0;color:var(--muted);font-size:15px}

/* Pricing */
.plans{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));align-items:start}
.plan{
  border:1px solid var(--border);border-radius:var(--radius);padding:30px;
  background:var(--bg);display:flex;flex-direction:column;height:100%;
}
.plan.featured{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.plan h3{margin:0 0 4px;font-size:16px;font-weight:650}
.plan .price{font-size:38px;font-weight:800;letter-spacing:-.03em;margin:10px 0 2px}
.plan .price span{font-size:15px;font-weight:500;color:var(--muted)}
.plan .desc{color:var(--muted);font-size:14px;margin:0 0 22px}
.plan ul{list-style:none;padding:0;margin:0 0 26px;font-size:15px}
.plan li{padding:7px 0 7px 26px;position:relative;color:var(--muted)}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
.plan .btn{margin-top:auto;width:100%}

/* Prose */
.prose{max-width:760px;margin:0 auto}
.prose h1{font-size:clamp(28px,4vw,42px);letter-spacing:-.025em;margin:0 0 10px}
.prose h2{font-size:21px;margin:38px 0 10px;letter-spacing:-.01em}
.prose h3{font-size:17px;margin:26px 0 8px}
.prose p,.prose li{color:var(--muted);font-size:16px}
.prose ul{padding-left:22px}
.prose .updated{font-size:14px;color:var(--muted);margin-bottom:34px}

/* Contact */
.contact-grid{display:grid;gap:32px;grid-template-columns:1fr 1fr}
@media(max-width:800px){.contact-grid{grid-template-columns:1fr}}
.contact-box{border:1px solid var(--border);border-radius:var(--radius);padding:28px;background:var(--surface)}
.contact-box h3{margin:0 0 6px;font-size:16px}
.contact-box p{margin:0 0 14px;color:var(--muted);font-size:15px}
.contact-box a.mail{font-size:17px;font-weight:600}

/* CTA band */
.cta-band{text-align:center;padding:76px 0}
.cta-band h2{font-size:clamp(26px,3.6vw,38px);letter-spacing:-.025em;margin:0 0 14px;font-weight:780}
.cta-band p{color:var(--muted);max-width:520px;margin:0 auto 30px;font-size:17px}

/* Footer */
.site-footer{border-top:1px solid var(--border);padding:52px 0 34px;font-size:14px;color:var(--muted)}
.footer-grid{display:grid;gap:32px;grid-template-columns:1.6fr 1fr 1fr 1fr;margin-bottom:36px}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}}
.footer-grid h4{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--text);margin:0 0 12px;font-weight:650}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-grid li{margin-bottom:8px}
.footer-grid a{color:var(--muted)}
.footer-grid a:hover{color:var(--text)}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}