.brands {
    background:
        radial-gradient(circle at 12% 8%, rgba(31, 223, 168, 0.08), transparent 24rem),
        linear-gradient(180deg, #f8f8fc 0%, #ffffff 100%);
    color: #15106d;
}

.brands__header {
    max-width: 760px;
    margin: 0 auto 3rem;
    text-align: center;
}

.brands__header h2 {
    margin: 0.4rem 0 0.9rem;
    color: #15106d;
}

.brands__header p {
    margin: 0;
    color: rgba(21, 16, 109, 0.72);
}

.brands__groups {
    display: grid;
    gap: 3rem;
}

.brands__group {
    padding: clamp(1.5rem, 3vw, 2.5rem);
    border: 1px solid rgba(32, 19, 138, 0.08);
    border-radius: 1.5rem;
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 18px 48px rgba(21, 16, 109, 0.08);
}

.brands__group-heading {
    margin-bottom: 1.75rem;
}

.brands__group-heading h3 {
    margin: 0 0 0.35rem;
    color: #20138a;
    font-size: clamp(1.65rem, 3vw, 2.35rem);
}

.brands__group-heading p {
    margin: 0;
    color: rgba(21, 16, 109, 0.68);
}

.brands__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    align-items: stretch;
}

.brands__item {
    min-height: 132px;
    margin: 0;
    padding: 1.15rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(32, 19, 138, 0.08);
    border-radius: 1rem;
    background: #ffffff;
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.brands__item:hover {
    transform: translateY(-4px);
    border-color: rgba(31, 223, 168, 0.45);
    box-shadow: 0 14px 30px rgba(21, 16, 109, 0.1);
}

.brands__item img {
    display: block;
    width: 100%;
    max-width: 190px;
    max-height: 92px;
    height: auto;
    object-fit: contain;
}

.brands__group--organizadores .brands__item {
    min-height: 160px;
}

.brands__group--organizadores .brands__item img {
    max-width: 230px;
    max-height: 115px;
}

.brands__group--patrocinadores .brands__grid,
.brands__group--expositores .brands__grid {
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
}

@media (max-width: 640px) {
    .brands__header {
        margin-bottom: 2rem;
        text-align: left;
    }

    .brands__groups {
        gap: 1.5rem;
    }

    .brands__group {
        padding: 1.25rem;
        border-radius: 1.1rem;
    }

    .brands__grid,
    .brands__group--patrocinadores .brands__grid,
    .brands__group--expositores .brands__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .brands__item,
    .brands__group--organizadores .brands__item {
        min-height: 110px;
        padding: 0.85rem;
    }
}

@media (max-width: 420px) {
    .brands__grid,
    .brands__group--patrocinadores .brands__grid,
    .brands__group--expositores .brands__grid {
        grid-template-columns: 1fr;
    }
}