.corporativa-nav {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    background: rgba(10, 10, 10, .98);
    border-bottom: 1px solid rgba(201, 169, 110, .25);
}
.corporativa-nav-inner {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}
.corporativa-brand {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-weight: 900;
    color: var(--luxury-gold);
    text-decoration: none;
}
.corporativa-links, .corporativa-submenu { list-style: none; margin: 0; padding: 0; }
.corporativa-links { display: flex; align-items: center; gap: 1.5rem; }
.corporativa-nav a, .corporativa-nav summary { text-decoration: none; }
.corporativa-links a, .corporativa-links summary {
    color: var(--platinum);
    display: block;
    padding: .5rem 0;
    font-weight: 600;
}
.corporativa-links summary { cursor: pointer; list-style: none; }
.corporativa-links summary::-webkit-details-marker { display: none; }
.corporativa-links summary::after { content: ' ▾'; color: var(--luxury-gold); }
.corporativa-links details { position: relative; }
.corporativa-links details[open] > summary { color: var(--luxury-gold); }
.corporativa-submenu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 20rem;
    max-width: none;
    padding: .75rem;
    border: 1px solid rgba(201, 169, 110, .4);
    border-radius: .5rem;
    background: var(--deep-black);
    box-shadow: 0 12px 30px rgba(0, 0, 0, .4);
}
.corporativa-submenu a { padding: .65rem .75rem; border-radius: .25rem; }
.corporativa-links a:hover { color: var(--luxury-gold); }
.corporativa-submenu a:hover { background: var(--charcoal); }
.corporativa-nav :focus-visible { outline: 2px solid var(--luxury-gold); outline-offset: 4px; }
.corporativa-toggle {
    border: 1px solid var(--luxury-gold);
    border-radius: .25rem;
    padding: .5rem .75rem;
    background: transparent;
    color: var(--platinum);
    font: inherit;
    cursor: pointer;
}
.corporativa-toggle[hidden] { display: none; }
@media (min-width: 1101px) { .corporativa-toggle { display: none; } }
@media (max-width: 1100px) {
    .corporativa-nav-inner { flex-wrap: wrap; padding: 1rem; gap: 1rem; }
    .corporativa-brand { font-size: 1.6rem; }
    .corporativa-links {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: .25rem;
        max-height: calc(100dvh - 100px);
        overflow-y: auto;
        padding: .25rem;
    }
    .corporativa-nav.enhanced:not(.is-open) .corporativa-links { display: none; }
    .corporativa-submenu { position: static; width: 100%; box-shadow: none; }
}