:root{
  --bg:#ffffff;
  --ink:#0e1b2a;
  --muted:#5b6b7b;
  --brand:#1e3a8a;   /* navy */
  --accent:#f59e0b;  /* orange */
  --line:#e9eef4;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,'Helvetica Neue',Arial,sans-serif;color:var(--ink);background:var(--bg)}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;gap:12px;align-items:center;color:var(--ink);text-decoration:none;font-weight:700}
.brand img{height:34px;width:auto}
nav a{margin-left:18px;text-decoration:none;color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:12px 18px;text-decoration:none;font-weight:600}
.btn-primary{background:var(--brand);color:#fff}
.btn-outline{border:1px solid var(--line)}
.btn-ghost{background:#f6f9fc;border:1px solid var(--line)}
.hero{padding:96px 0 72px}
.hero h1{font-size:40px;line-height:1.15;margin:0 0 12px}
.sub{color:var(--muted);max-width:760px}
.cta{margin-top:20px;display:flex;gap:12px}
.flash{margin-top:18px;padding:12px 14px;border-radius:8px;font-weight:600}
.flash.success{background:#ecfdf5;color:#065f46}
.flash.error{background:#fef2f2;color:#991b1b}
.features{padding:56px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{border:1px solid var(--line);border-radius:14px;padding:18px;background:#fff}
.card h3{margin:6px 0 8px}
.how{padding:64px 0}
.how h2{text-align:center;margin:0 0 24px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{border:1px dashed var(--line);border-radius:14px;padding:18px}
.step span{display:inline-grid;place-items:center;background:var(--accent);color:#111;width:28px;height:28px;border-radius:50%;font-weight:700;margin-bottom:8px}
.contact{padding:72px 0;background:#fafcff;border-top:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:start}
.bullets{color:var(--muted)}
.form label{display:block;font-weight:600;margin:12px 0 6px}
.form input,.form textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit}
.form button{margin-top:10px}
.micro{color:var(--muted);font-size:12px;margin-top:6px}
.site-footer{border-top:1px solid var(--line);padding:22px 0;background:#fff}
.foot{display:flex;justify-content:space-between;align-items:center}
.social a{display:inline-grid;place-items:center;width:28px;height:28px;border:1px solid var(--line);border-radius:8px;color:var(--muted);text-decoration:none;margin-left:8px}

@media (max-width:900px){
  .grid-4{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .hero h1{font-size:32px}
}