:root{--navy:#10243a;--blue:#1769aa;--gold:#d6a84f;--bg:#f4f7fa;--ink:#243447;--muted:#65758b}
*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
header{background:var(--navy);color:white}.nav{max-width:1150px;margin:auto;padding:16px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.brand{font-size:1.25rem;font-weight:800;color:white;text-decoration:none}.nav-links{display:flex;gap:18px;list-style:none;padding:0;margin:0;flex-wrap:wrap}.nav a{color:white;text-decoration:none}.nav a:hover{color:var(--gold)}
main{max-width:1150px;margin:36px auto;padding:0 22px;min-height:65vh}.hero{background:linear-gradient(120deg,#10243a,#1769aa);color:white;border-radius:18px;padding:58px 36px}.hero h1{font-size:clamp(2rem,5vw,3.3rem);line-height:1.1;margin:0 0 15px}.hero p{max-width:650px;color:#e1eaf2}
.btn,button{display:inline-block;background:var(--gold);color:#14283d;border:0;border-radius:7px;padding:11px 17px;font-weight:700;text-decoration:none;cursor:pointer}.btn.secondary{background:var(--blue);color:white}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}.card{background:white;padding:22px;border-radius:12px;box-shadow:0 5px 20px #172b3d10}.vehicle h3{margin:0 0 8px;color:var(--navy)}.muted{color:var(--muted)}form{max-width:560px;background:white;padding:24px;border-radius:12px;box-shadow:0 5px 20px #172b3d10}label{display:block;font-weight:700;margin:12px 0 5px}input{width:100%;padding:11px;border:1px solid #ccd5df;border-radius:6px;font:inherit}footer{background:var(--navy);color:#dce5ed;padding:24px;text-align:center;margin-top:50px}.message{padding:12px;border-radius:7px;background:#e8f3ff;margin:14px 0}.error{background:#fdeaea;color:#9c2525}@media(max-width:520px){.nav{align-items:flex-start}.nav-links{gap:10px}.hero{padding:38px 22px}}