.about-us-page {
    margin: 0;
    padding: 0;
    font-family: 'AlibabaPuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: #333;
}

.about-container {
    max-width: 90rem;
    margin: 0 auto;
}

.about-hero-banner {
    width: 100%;
    height: 71.125rem;
    max-height: 71.125rem;
    position: relative;
    overflow: hidden;
}

.about-hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.about-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.about-us-content {
    position: absolute;
    bottom: 6rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    max-width: 70%;
    width: 100%;
    text-align: center;
    color: white;
}

.about-us-title {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 1.875rem;
    text-transform: uppercase;
    color: white;
}

.about-us-text {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: 1.875rem;
    color: white;
    text-align: left;
}

.about-learn-more-btn {
    background: transparent;
    border: 0.125rem solid white;
    color: white;
    padding: 0.5rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 2rem;
    transition: all 0.3s ease;
    display: inline-block;
}

.about-learn-more-btn:hover {
    background: #A00000;
    transform: translateY(-0.125rem);
    box-shadow: 0 0.5rem 1.25rem rgba(185, 28, 28, 0.3);
}

.about-sustainability-section {
    padding: 3rem 0;
}

.about-section-title {
    font-family: 'AlibabaPuHuiTi', sans-serif;
    font-size: 3.75rem;
    font-weight: 900;
    background: linear-gradient(180deg, #FF1426 0%, #951426 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    margin-bottom: 3.125rem;
    text-align: left;
    line-height: 1;
}

.about-sustainability-grid {
    display: flex;
    gap: 1.25rem;
    height: 39.375rem;
}

.about-sustainability-card {
    position: relative;
    flex: 1;
    border-radius: 0.625rem;
    overflow: hidden;
    box-shadow: 0 0.625rem 1.875rem rgba(0, 0, 0, 0.1);
    transition: flex 0.5s ease, transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.about-sustainability-card a {
    text-decoration: none;
    display: block;
    width: 100%;
    height: 100%;
}

.about-sustainability-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.about-hover-card {
    position: relative;
    flex: 0.5;
}

.about-hover-card:first-child {
    flex: 2;
}

.about-hover-card:first-child .about-white-overlay {
    opacity: 0;
}

.about-hover-card:first-child .about-hover-content {
    opacity: 1;
    transform: translateY(0);
}

.about-sustainability-grid:hover .about-hover-card {
    flex: 0.5;
}

.about-sustainability-grid:hover .about-hover-card:hover {
    flex: 2;
}

.about-sustainability-grid:hover .about-hover-card:not(:hover) .about-white-overlay {
    opacity: 1;
}

.about-sustainability-grid:hover .about-hover-card:not(:hover) .about-hover-content {
    opacity: 0;
    transform: translateY(100%);
}

.about-sustainability-grid:hover .about-hover-card:hover .about-white-overlay {
    opacity: 0;
}

.about-sustainability-grid:hover .about-hover-card:hover .about-hover-content {
    opacity: 1;
    transform: translateY(0);
}

.about-white-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.5);
    z-index: 2;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.about-hover-card:hover .about-white-overlay {
    opacity: 0;
}

.about-hover-content {
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.3s ease;
}

.about-hover-card:hover .about-hover-content {
    opacity: 1;
    transform: translateY(0);
}

.about-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(179, 42, 40, 0.9));
    color: white;
    padding: 2.5rem 1.875rem;
    text-align: center;
    z-index: 3;
    pointer-events: none;
}

.about-card-content h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.625rem;
    text-transform: uppercase;
}

.about-card-content p {
    font-size: 1.5rem;
    line-height: 1.5;
    opacity: 0.9;
}

.about-global-partner-section {
    padding: 3.75rem 0 6rem;
    background-color: white;
}

.about-global-partner-section .about-section-title {
    background: linear-gradient(180deg, #FF1426 0%, #951426 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 3.125rem;
}

.about-partner-description {
    font-family: 'AlibabaPuHuiTi', sans-serif;
    font-size: 1.375rem;
    font-weight: 400;
    color: #666;
    margin-bottom: 6.25rem;
    text-align: left;
    line-height: 1;
}

.about-partner-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1.875rem 1.25rem;
    align-items: center;
}

.about-partner-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    min-height: 6.25rem;
}

.about-partner-logo:hover {
    transform: translateY(-0.1875rem);
}

.about-partner-logo img {
    max-width: 100%;
    object-fit: contain;
}

@media (max-width: 48rem) {
    .about-hero-banner {
        height: 260vw;
        max-height: 300vw;
    }
    
    .about-hero-image img {
        object-position: center bottom;
        object-fit: cover;
    }
    
    .about-us-content {
        bottom: 16vw;
        max-width: 90%;
        /* padding: 0 4% 6vw 4%; */
    }
    
    .about-us-title {
        font-size: 4vw;
        /* margin-bottom: 4vw; */
    }
    
    .about-us-text {
        font-size: 3.5vw;
        line-height: 1.4;
        margin-bottom: 6vw;
    }
    
    .about-learn-more-btn {
        font-size: 3.5vw;
        padding: 2.5vw 5vw;
        border-radius: 4vw;
    }
    
    .about-sustainability-section,
    .about-global-partner-section {
        padding: 8vw 0;
    }
    
    .about-section-title {
        font-size: 6vw;
        margin-bottom: 6vw;
        text-align: center;
        line-height: 1.2;
    }
    
    .about-sustainability-grid {
        flex-direction: column;
        gap: 4vw;
        height: auto;
    }
    
    .about-hover-card {
        flex: 1;
    }
    
    .about-hover-card:first-child {
        flex: 1;
    }
    
    .about-sustainability-grid:hover .about-hover-card {
        flex: 1;
    }
    
    .about-sustainability-grid:hover .about-hover-card:hover {
        flex: 1;
    }
    
    .about-sustainability-card {
        height: 50vw;
        border-radius: 2vw;
    }
    
    .about-card-content {
        padding: 4vw 3vw;
    }
    
    .about-card-content h3 {
        font-size: 6vw;
        margin-bottom: 2vw;
    }
    
    .about-card-content p {
        font-size: 4vw;
        line-height: 1.3;
    }
    
    .about-global-partner-section .about-section-title {
        margin-bottom: 4vw;
    }
    
    .about-partner-description {
        font-size: 3.5vw;
        margin-bottom: 8vw;
        line-height: 1.4;
        text-align: center;
    }
    
    .about-partner-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 4vw 3vw;
    }
    
    .about-partner-logo {
        min-height: 15vw;
    }
    
    .about-partner-logo:hover {
        transform: none;
    }
}

@keyframes aboutFadeInUp {
    from {
        opacity: 0;
        transform: translateY(1.875rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.about-sustainability-card,
.about-partner-logo {
    animation: aboutFadeInUp 0.6s ease-out forwards;
}

.about-sustainability-card:nth-child(1) { animation-delay: 0.1s; }
.about-sustainability-card:nth-child(2) { animation-delay: 0.2s; }
.about-sustainability-card:nth-child(3) { animation-delay: 0.3s; }
.about-sustainability-card:nth-child(4) { animation-delay: 0.4s; }
.about-sustainability-card:nth-child(5) { animation-delay: 0.5s; }