body {
    background: #f0f2f5;
    min-height: 100vh;
    padding: 2rem 0;
}
.cadastro-card {
    max-width: 680px;
    margin: 0 auto;
    box-shadow: 0 4px 24px rgba(0,0,0,.10);
    border: none;
    border-radius: 12px;
}
.cadastro-header {
    background: #1a3a5c;
    border-radius: 12px 12px 0 0;
    padding: 1.75rem 2rem;
}
.cadastro-header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    margin: 0.4rem 0 0.2rem;
}
.cadastro-header p {
    color: rgba(255,255,255,.7);
    font-size: 0.85rem;
    margin: 0;
}
.cadastro-body { padding: 2rem; }
.secao-titulo {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: #6c757d;
    border-bottom: 1px solid #dee2e6;
    padding-bottom: 0.4rem;
    margin-bottom: 1.1rem;
}
.btn-cadastrar {
    background: #1a3a5c;
    border-color: #1a3a5c;
}
.btn-cadastrar:hover,
.btn-cadastrar:focus {
    background: #0f2540;
    border-color: #0f2540;
}
/* Uppercase em campos de texto */
.uc { text-transform: uppercase; }
.uc::placeholder { text-transform: none; }