.project-detail {
    padding: 90px 0;
}

.project-detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, .85fr);
    gap: 70px;
    align-items: start;
}

.project-main-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: #f2f2f2;
    overflow: hidden;
    box-shadow: 0 18px 55px rgba(0,0,0,.10);
}

.project-main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 12px;
    margin-top: 18px;
}

.project-thumbnail-item {
    display: block;
    width: 100%;
    aspect-ratio: 1 / 1;
    border: 2px solid transparent;
    background: #fff;
    padding: 0;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(0,0,0,.07);
}

.project-thumbnail-item.active {
    border-color: #9b7a47;
}

.project-thumbnail-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-info h1 {
    font-size: clamp(38px, 3vw, 68px);
    line-height: 1.02;
    margin: 0 0 18px;
    letter-spacing: -.04em;
}

.project-location {
    color: #777;
    font-size: 20px;
    margin: 0 0 26px;
}

.project-description {
    color: #555;
    font-size: 18px;
}

@media (max-width: 900px) {
    .project-detail {
        padding: 60px 0;
    }

    .project-detail-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .project-thumbnail-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}