.cooperation-logo-section {
    border-top: 1px solid rgba(255,255,255,.08);
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.cooperation-logo-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.cooperation-logo-card {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 112px;
    padding: 1.25rem;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 18px;
    background: rgba(255,255,255,.94);
    transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.cooperation-logo-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255,255,255,.28);
    background: #fff;
}

.cooperation-logo-card img {
    display: block;
    max-width: 100%;
    max-height: 72px;
    object-fit: contain;
}

.cooperation-reference-section {
    border-top: 1px solid rgba(255,255,255,.08);
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.cooperation-reference-section h2 {
    margin: 0 0 2rem;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1;
    letter-spacing: -0.045em;
}

.cooperation-reference-list {
    display: grid;
    gap: clamp(2rem, 5vw, 4rem);
}

.cooperation-reference-project {
    display: grid;
    gap: 1.5rem;
    padding-top: clamp(1.5rem, 3vw, 2.5rem);
    border-top: 1px solid rgba(255,255,255,.1);
}

.cooperation-reference-project__header {
    display: grid;
    gap: .75rem;
}

.cooperation-reference-project__header h3 {
    margin: 0;
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    line-height: 1.08;
    letter-spacing: -0.035em;
}

.cooperation-reference-project__header p:not(.eyebrow) {
    margin: 0;
    max-width: 760px;
    color: var(--color-muted);
    line-height: 1.8;
}

.cooperation-reference-slider {
    display: grid;
    gap: .85rem;
}

.cooperation-reference-slider__controls {
    display: flex;
    justify-content: flex-end;
    gap: .65rem;
}

.cooperation-reference-slider__button,
.cooperation-lightbox__close,
.cooperation-lightbox__nav {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255,255,255,.16);
    background: rgba(255,255,255,.045);
    color: var(--color-text);
    cursor: pointer;
    transition: background .2s ease, border-color .2s ease, transform .2s ease;
}

.cooperation-reference-slider__button {
    width: 42px;
    height: 42px;
    border-radius: 999px;
    font-size: 1.65rem;
    line-height: 1;
}

.cooperation-reference-slider__button:hover,
.cooperation-lightbox__close:hover,
.cooperation-lightbox__nav:hover {
    border-color: rgba(255,255,255,.34);
    background: rgba(255,255,255,.09);
    transform: translateY(-1px);
}

.cooperation-reference-slider__track {
    display: flex;
    gap: clamp(1rem, 2.5vw, 1.5rem);
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: 1px;
    scrollbar-width: thin;
    padding: 1px 0 .4rem;
}

.cooperation-reference-slider__track:focus-visible {
    outline: 2px solid rgba(255,255,255,.42);
    outline-offset: 6px;
}

.cooperation-reference-slider__slide {
    flex: 0 0 min(42%, 460px);
    scroll-snap-align: start;
}

.cooperation-reference-image {
    margin: 0;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 18px;
    background: rgba(255,255,255,.035);
    box-shadow: var(--shadow-soft);
}

.cooperation-reference-image__button {
    display: block;
    width: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    cursor: zoom-in;
}

.cooperation-reference-image__button:focus-visible {
    outline: 2px solid rgba(255,255,255,.42);
    outline-offset: -6px;
}

.cooperation-reference-image img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform .25s ease;
}

.cooperation-reference-image__button:hover img {
    transform: scale(1.02);
}

.cooperation-reference-image figcaption {
    padding: .85rem 1rem 1rem;
    color: var(--color-muted);
    font-size: .95rem;
    line-height: 1.55;
}

.has-open-lightbox {
    overflow: hidden;
}

.cooperation-lightbox[hidden] {
    display: none;
}

.cooperation-lightbox {
    position: fixed;
    inset: 0;
    z-index: 120;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(1rem, 3vw, 2rem);
}

.cooperation-lightbox__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(4,6,10,.86);
    backdrop-filter: blur(14px);
}

.cooperation-lightbox__dialog {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: clamp(.75rem, 2vw, 1.2rem);
    width: min(1120px, 100%);
    max-height: 92vh;
}

.cooperation-lightbox__figure {
    margin: 0;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,.14);
    border-radius: 18px;
    background: rgba(11,14,20,.96);
    box-shadow: 0 24px 80px rgba(0,0,0,.45);
}

.cooperation-lightbox__image {
    display: block;
    width: 100%;
    max-height: 78vh;
    object-fit: contain;
    background: rgba(0,0,0,.28);
}

.cooperation-lightbox__caption {
    padding: .9rem 1rem 1rem;
    color: var(--color-muted);
    font-size: .95rem;
    line-height: 1.55;
}

.cooperation-lightbox__caption:empty {
    display: none;
}

.cooperation-lightbox__close {
    position: absolute;
    top: -3.25rem;
    right: 0;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    font-size: 1.8rem;
    line-height: 1;
}

.cooperation-lightbox__nav {
    width: 46px;
    height: 46px;
    border-radius: 999px;
    font-size: 2rem;
    line-height: 1;
}

@media (max-width: 980px) {
    .cooperation-reference-slider__slide {
        flex-basis: min(58%, 420px);
    }
}

@media (max-width: 760px) {
    .cooperation-logo-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .cooperation-reference-slider__controls {
        justify-content: flex-start;
    }

    .cooperation-reference-slider__slide {
        flex-basis: 86%;
    }

    .cooperation-lightbox__dialog {
        grid-template-columns: 1fr;
        gap: .75rem;
    }

    .cooperation-lightbox__nav {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        background: rgba(8,10,15,.72);
    }

    .cooperation-lightbox__nav:hover {
        transform: translateY(calc(-50% - 1px));
    }

    .cooperation-lightbox__nav--prev {
        left: .6rem;
    }

    .cooperation-lightbox__nav--next {
        right: .6rem;
    }

    .cooperation-lightbox__close {
        top: .6rem;
        right: .6rem;
        background: rgba(8,10,15,.72);
    }

    .cooperation-lightbox__image {
        max-height: 72vh;
    }
}

@media (max-width: 460px) {
    .cooperation-logo-grid {
        grid-template-columns: 1fr;
    }

    .cooperation-reference-slider__slide {
        flex-basis: 92%;
    }
}