* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: #222;
    background: #fff;
}
a { color: inherit; }
h1, h2, h3 { margin: 0 0 12px; }

/* Header */
.header {
    background: #10171F;
    position: sticky;
    top: 0;
    z-index: 10;
}
.header-inner {
    max-width: 1100px;
    margin: auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo-link { display: flex; align-items: center; }
.logo-img { height: 40px; display: block; }
.nav { display: flex; gap: 28px; }
.nav a {
    color: #dbe6f3;
    text-decoration: none;
    font-size: 0.95em;
    font-weight: 500;
    transition: 0.2s;
}
.nav a:hover { color: #65A7FA; }

/* Hero */
.hero {
    background: #10171F;
    color: white;
    padding: 90px 24px 100px;
    text-align: center;
}
.hero-inner { max-width: 720px; margin: auto; }
.hero h1 { font-size: 2.4em; line-height: 1.2; }
.hero-sub { font-size: 1.15em; color: #b7c4d4; margin: 0 0 32px; }
.btn-cta {
    display: inline-block;
    background: #0067BC;
    color: white;
    text-decoration: none;
    padding: 14px 32px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1.05em;
    transition: 0.2s;
}
.btn-cta:hover { background: #005496; }

/* Secciones genéricas */
.section-inner { max-width: 1100px; margin: auto; padding: 70px 24px; }
.servicios { background: #F9F8F6; }
.servicios h2, .contacto h2 {
    text-align: center;
    font-size: 1.9em;
    margin-bottom: 40px;
}

.tarjetas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}
.tarjeta {
    background: white;
    border-radius: 10px;
    padding: 28px 24px;
    border: 1px solid #eee;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.tarjeta-icono {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: #e8f1fb;
    color: #0067BC;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}
.tarjeta h3 { font-size: 1.15em; color: #111; }
.tarjeta p { color: #555; line-height: 1.5; margin: 0; }

/* Contacto */
.contacto { text-align: center; }
.contacto-sub { color: #555; font-size: 1.05em; margin-bottom: 32px; }
.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #0067BC;
    color: white;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1.05em;
    transition: 0.2s;
}
.btn-whatsapp:hover { background: #005496; }

/* Footer */
.footer {
    background: #10171F;
    color: #8a97a5;
    text-align: center;
    padding: 24px;
    font-size: 0.85em;
}

@media (max-width: 600px) {
    .hero { padding: 60px 20px 70px; }
    .hero h1 { font-size: 1.8em; }
    .nav { gap: 16px; }
    .nav a { font-size: 0.88em; }
}