:root{
  --bg:#ffffff; --text:#0f172a; --muted:#64748b; --primary:#0369a1;
  --card:#f8fafc; --accent:#0ea5a4;
}
*{box-sizing:border-box}
html,body{height:100%}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial; margin:0; background:var(--bg); color:var(--text); -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;}
.container{max-width:1100px;margin:0 auto;padding:24px}
.header{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.logo{font-weight:700;color:var(--primary);font-size:20px}
.nav a{margin-left:16px;color:var(--muted);text-decoration:none}
.hero{background:linear-gradient(90deg,var(--primary),#075985);color:#fff;padding:48px;border-radius:12px;margin-top:18px}
.buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}
.btn{background:#fff;color:var(--primary);padding:12px;border-radius:8px;text-align:center;font-weight:600;text-decoration:none;display:inline-block}
.section{margin-top:32px;padding:18px;background:var(--card);border-radius:10px}
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.card{background:#fff;border-radius:10px;padding:16px;box-shadow:0 6px 18px rgba(2,6,23,0.06)}
.stats{display:flex;gap:16px;flex-wrap:wrap}
.stat{flex:1;min-width:150px;background:linear-gradient(180deg,#fff,#f1f5f9);padding:12px;border-radius:10px;text-align:center}
.cta{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:18px}
.form input, .form textarea{width:100%;padding:10px;margin-top:8px;border:1px solid #e6eef6;border-radius:8px}
.footer{margin-top:40px;padding:20px;text-align:center;color:var(--muted)}

/* portfolio */
.filter{display:flex;gap:8px;flex-wrap:wrap}
.filter button{padding:8px 12px;border-radius:999px;border:1px solid #e6eef6;background:#fff;cursor:pointer}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:16px}
.card img{width:100%;height:160px;object-fit:cover;border-radius:8px}

/* responsive */
@media(max-width:700px){
  .buttons{grid-template-columns:repeat(2,1fr)}
  .cta{flex-direction:column;align-items:stretch}
}