:root{--azul:#00539B;--azul-oscuro:#062b4f;--fondo:#f4f7fb;--verde:#25d366;--texto:#1f2937}
*{box-sizing:border-box;margin:0;padding:0}body{font-family:Arial,Helvetica,sans-serif;color:var(--texto);line-height:1.6;background:white}a{text-decoration:none}
.topbar{background:#021b33;color:white;padding:8px 6%;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:14px}
.header{background:white;padding:15px 6%;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid #dbe4ef;position:sticky;top:0;z-index:10}.logo{height:72px}.nav{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.nav a{color:var(--azul-oscuro);font-weight:700}
.btn{display:inline-block;padding:12px 20px;border-radius:8px;font-weight:700;margin:6px}.btn-primary{background:var(--azul);color:white}.btn-whatsapp{background:var(--verde);color:white}
.hero{min-height:520px;display:flex;align-items:center;padding:80px 6%;background:linear-gradient(90deg,rgba(2,27,51,.93),rgba(0,83,155,.75));color:white}.hero h1{font-size:44px;line-height:1.12;max-width:900px;margin-bottom:20px}.hero p{font-size:21px;max-width:850px;margin-bottom:22px}
.section{padding:65px 6%;max-width:1280px;margin:auto}.section.alt{background:var(--fondo);max-width:none}.section h1,.section h2{color:var(--azul-oscuro);font-size:34px;margin-bottom:18px}.section>p{font-size:18px;margin-bottom:25px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:white;border:1px solid #dbe4ef;border-radius:16px;padding:24px;box-shadow:0 10px 28px rgba(2,27,51,.08)}.card h3{color:var(--azul-oscuro);margin-bottom:10px}
.placeholder{min-height:180px;border:2px dashed #9bb7d6;border-radius:14px;display:flex;align-items:center;justify-content:center;text-align:center;padding:18px;background:#f8fbff;color:#31506f;font-weight:700;margin-bottom:16px}
.notice{background:#fff7ed;border-left:5px solid #f59e0b;padding:18px;border-radius:8px;margin-top:22px}input,textarea{width:100%;padding:14px;margin:8px 0;border:1px solid #dbe4ef;border-radius:9px;font-size:16px}textarea{min-height:150px}button{border:0;cursor:pointer}
.footer{background:#021b33;color:white;padding:38px 6%;margin-top:30px}.whatsapp-float{position:fixed;right:22px;bottom:22px;background:var(--verde);color:white;padding:14px 18px;border-radius:999px;font-weight:800;box-shadow:0 8px 25px rgba(0,0,0,.25);z-index:20}
@media(max-width:900px){.header{flex-direction:column;align-items:flex-start}.hero h1{font-size:32px}.hero p{font-size:18px}.grid,.grid3{grid-template-columns:1fr}.logo{height:58px}}