.synth-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    max-width: 90vmin;
    margin: 2rem auto;
}

.synth-item {
    display: block;
    aspect-ratio: 1 / 1;
    border-radius: 8px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    position: relative;
    background: #eee; /* fallback en cas d’image manquante */
}

.synth-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.synth-item span {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.85);
    text-align: center;
    font-weight: bold;
    font-size: 1rem;
    padding: 0.5rem;
    border-top: 1px solid #ddd;
}