.panel--partners {
    background: var(--color-bg-soft);
    align-items: flex-start;
}

.content--partners {
    display: grid;
    gap: 0;
    width: 100%;
    height: 100%;
}

.ptn-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    height: 100%;
    min-height: 0;
}

.ptn-left {
    display: grid;
    gap: var(--space-4);
    align-content: start;
    padding: clamp(24px, 3vw, 44px) clamp(var(--gutter-x), 2.5vw, 40px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(var(--color-primary-rgb), 0.2) transparent;
}

.ptn-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.ptn-title {
    font-family: var(--font-heading);
    font-size: var(--section-title-size);
    font-weight: var(--fw-bold);
    color: var(--color-ink);
    line-height: var(--lh-tight);
    margin: 0;
}

.brand-group {
    display: grid;
    gap: var(--space-2);
}

.brand-group+.brand-group {
    padding-top: var(--space-4);
    border-top: 1px solid rgba(var(--color-primary-rgb), 0.1);
}

.brand-group__label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--eyebrow-size);
    font-weight: var(--eyebrow-weight);
    letter-spacing: var(--eyebrow-spacing);
    text-transform: uppercase;
    color: var(--color-ink);
    margin: 0;
}

.brand-logos {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.brand-logos--3col {
    grid-template-columns: repeat(3, 1fr);
}

.brand-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 7px 10px;
    border-radius: var(--radius-md);
    background: var(--color-surface-soft);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    cursor: default;
    min-width: 0;
}

.brand-item:hover {
    border-color: rgba(var(--color-primary-rgb), 0.24);
    box-shadow: 0 3px 12px rgba(var(--color-primary-rgb), 0.07);
    transform: translateY(-1px);
}

.brand-logo-img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 50px;
    /* default max height */
    object-fit: contain;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    display: block;
}

.brand-logo-ph {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: rgba(var(--color-primary-rgb), 0.07);
    border: 1px dashed rgba(var(--color-primary-rgb), 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(var(--color-primary-rgb), 0.3);
    flex-shrink: 0;
}

.ptn-tech {
    display: grid;
    gap: var(--space-2);
}

.tech-section-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--eyebrow-size);
    font-weight: var(--eyebrow-weight);
    letter-spacing: var(--eyebrow-spacing);
    text-transform: uppercase;
    color: var(--color-primary);
    margin: 0;
    padding-top: var(--space-4);
    border-top: 1px solid rgba(var(--color-primary-rgb), 0.1);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2);
}

.tech-card {
    background: var(--color-surface-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 13px;
    display: grid;
    gap: 6px;
    align-content: start;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.tech-card:hover {
    border-color: rgba(var(--color-primary-rgb), 0.22);
    box-shadow: 0 4px 16px rgba(var(--color-primary-rgb), 0.08);
    transform: translateY(-2px);
}

.tech-card__icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: rgba(var(--color-primary-rgb), 0.08);
    border: 1px solid rgba(var(--color-primary-rgb), 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.tech-card__title {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: var(--fw-bold);
    color: var(--color-ink);
    margin: 0;
    line-height: var(--lh-snug);
}

.tech-card__desc {
    font-size: var(--text-xs);
    color: var(--color-ink-60);
    line-height: var(--lh-base);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ptn-right {
    position: relative;
    background: #0d1a12;
    border-left: 1px solid rgba(var(--color-primary-rgb), 0.12);
    overflow: hidden;
    display: flex;
    align-items: stretch;
}

.ptn-video-wrap {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.ptn-video-player {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
    object-fit: cover;
    display: block;
}

.ptn-video-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    color: rgba(255, 255, 255, 0.18);
    width: 100%;
    height: 100%;
    min-height: 320px;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.ptn-video-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    color: rgba(255, 255, 255, 0.22);
    text-align: center;
    padding: 40px 24px;
    width: 100%;
}

.ptn-video-empty p {
    font-size: var(--text-sm);
    line-height: 1.6;
    color: var(--color-white-30);
    margin: 0;
}

.ptn-video-empty strong {
    color: var(--color-white-56);
}

@media (max-width: 1100px) {
    .brand-logos {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 840px) {
    .panel--partners {
        align-items: flex-start;
    }

    .ptn-split {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto;
    }

    .ptn-right {
        border-left: none;
        border-top: 1px solid rgba(var(--color-primary-rgb), 0.12);
        min-height: 260px;
    }

    .ptn-video-wrap {
        min-height: 260px;
    }

    .ptn-left {
        padding: 24px var(--gutter-x-mobile);
    }

    .brand-logos {
        grid-template-columns: repeat(2, 1fr);
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }

    .tech-card__desc {
        -webkit-line-clamp: 2;
    }

    /* Tối ưu mobile: Giới hạn số lượng logo và card công nghệ */
    .brand-logos .brand-item:nth-child(n+9) {
        display: none;
    }

    .tech-grid .tech-card:nth-child(n+5) {
        display: none;
    }
}