:root{
  --brand:#0ea5e9;
  --brand-600:#0284c7;
  --accent:#10b981;
  --ink:#0f172a;
  --muted:#475569;
  --bg:#ffffff;
  --bg-alt:#f8fafc;
  --ring: rgba(14,165,233,.35);
  --radius: 14px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Arial;background:var(--bg);color:var(--ink)}

.container{width:min(960px,92%);margin-inline:auto}
img{max-width:100%;display:block;height:auto}

.btn{display:inline-block;border-radius:12px;padding:.9rem 1.1rem;font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:.2s}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(2,132,199,.25)}
.btn-primary:hover{background:var(--brand-600)}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand);color:#fff}
.btn-whatsapp{background:#25D366;color:#fff}

.site-header{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid #e2e8f0;z-index:40}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:.6rem 0}
.brand{display:flex;align-items:center;gap:.6rem}
.logo{border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--accent));padding:6px}
.brand-name{font-weight:800}

.hero{display:grid;grid-template-columns:1fr;gap:1rem;padding:1.25rem 0 2rem}
.hero h1{font-size:clamp(1.6rem,5.6vw,2.4rem);line-height:1.15;margin:.25rem 0 .5rem}
.lead{color:var(--muted)}
.cta-row{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:.6rem}
.bullets{margin:.6rem 0 0;padding-left:1.1rem;color:var(--muted)}
.accent{color:var(--brand)}

.card{background:#fff;border:1px solid #e2e8f0;border-radius:var(--radius);padding:1rem}
.muted{color:var(--muted)}
.small{font-size:.92rem}
.pad-top{margin-top:.5rem}
.center{text-align:center;margin-top:1rem}

.section{padding:2rem 0}
.section.alt{background:var(--bg-alt)}
.section h2{margin:0 0 .6rem;font-size:1.6rem}

.cards{display:grid;grid-template-columns:1fr;gap:.8rem}
.cards.services .card{text-align:center}
.cards.services h3{margin:.5rem 0 .25rem}

.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr;gap:.8rem}
.step{display:flex;gap:.8rem;align-items:flex-start}
.step-num{flex:0 0 36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800}

.contact{display:grid;grid-template-columns:1fr;gap:.9rem}
input,textarea{width:100%;padding:.9rem;border-radius:12px;border:1px solid #e2e8f0;font:inherit}
input:focus,textarea:focus{outline:3px solid var(--ring);border-color:var(--brand)}

.site-footer{padding:1.25rem 0;border-top:1px solid #e2e8f0;color:var(--muted)}
.footer-grid{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}

.fab{position:fixed;right:16px;bottom:16px;display:grid;place-items:center;width:56px;height:56px;border-radius:999px;background:#25D366;box-shadow:0 10px 25px rgba(37,211,102,.35)}

@media (min-width: 760px){
  .hero{grid-template-columns:1.1fr .9fr;align-items:center;padding:2.5rem 0 3rem}
  .cards{grid-template-columns:repeat(3,1fr)}
  .contact{grid-template-columns:1.1fr .9fr}
}


/* Service images sizing + hover */
.cards.services img{width:140px;max-width:60%;margin:0 auto 6px;display:block;transition:transform .25s ease, filter .25s ease}
.cards.services .card:hover img{transform:scale(1.03);filter:saturate(1.1)}