html,
body {
    overflow-x: hidden;
}

.about-container {
    width: 90%; 
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.about-container img {
    max-width: 100%;
    height: auto;
    display: block;
}

.about_banner {
    width: 100%;
    overflow: hidden;
    padding: 0;
}

.about_content {
    padding: 6rem 0;
    background-color: #ffffff;
}

.about_content .about_main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 4rem;
    margin-bottom: 6rem;
}

.about_content .about_text {
    flex: 1;
    max-width: 50%;
}

.about_content .about_text .about_title {
    font-size: 2rem;
    font-weight: 700;
    color: #333333;
    line-height: 1.4;
    margin-bottom: 1.5rem;
}

.about_content .about_text .about_divider {
    width: 4rem;
    height: 0.25rem;
    background-color: #008F63;
    margin-bottom: 2rem;
}

.about_content .about_text .about_desc {
    font-size: 0.875rem;
    color: #666666;
    line-height: 1.8;
}

.about_content .about_image {
    flex: 1;
    max-width: 50%;
}

.about_content .about_image img {
    width: 100%;
    height: auto;
    display: block;
}

.about_content .about_stats {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
}

.about_content .about_stats .stat_item {
    text-align: center;
    flex: 1;
}

.about_content .about_stats .stat_item .stat_value {
    font-size: 2.5rem;
    font-weight: 700;
    color: #008F63;
    margin-bottom: 0.5rem;
    display: inline-block;
    white-space: nowrap;
    line-height: 1;
}

.about_content .about_stats .stat_item .stat_value .stat_unit {
    font-size: 1.25rem;
    font-weight: 600;
}

.about_content .about_stats .stat_item .stat_label {
    font-size: 0.875rem;
    color: #999999;
    display: block;
}

.about_production {
    padding: 6rem 0;
    background-color: #ffffff;
}

.about_production .production_title {
    font-size: 2rem;
    font-weight: 700;
    color: #333333;
    text-align: center;
    margin-bottom: 4rem;
}

.about_production .production_swiper {
    width: 100%;
    overflow: hidden;
}

.about_production .production_grid {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    flex-wrap: wrap;
}

.about_production .production_grid .production_item {
    flex: none;
    width: auto;
    text-align: center;
    transition: transform 0.3s ease;
}

.about_production .production_grid .production_item:hover {
    transform: translateY(-4px);
}

.about_production .production_grid .production_item img {
    width: 100%;
    height: auto;
    display: block;
    margin-bottom: 1rem;
    border-radius: 8px;
}

.about_production .production_grid .production_item .production_item_title {
    font-size: 0.875rem;
    color: #666666;
}

.about_production .production_controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid #eeeeee;
}

.about_production .production_controls .production_progress {
    flex: 1;
    height: 3px;
    background-color: #eeeeee;
    margin-right: 2rem;
}

.about_production .production_controls .production_progress .production_progress_bar {
    width: 25%;
    height: 100%;
    background-color: #008F63;
}

.about_production .production_controls .production_nav {
    display: flex;
    gap: 1rem;
}

.about_production .production_controls .production_nav button {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    border: 1px solid #008F63;
    background-color: transparent;
    color: #008F63;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.about_production .production_controls .production_nav button:hover {
    background-color: #008F63;
    color: #ffffff;
}

.about_production .production_controls .production_nav button.production_next {
    background-color: #008F63;
    color: #ffffff;
}

.about_production .production_controls .production_nav button.production_next:hover {
    background-color: #007050;
}

.about_certificate {
    padding: 6rem 0;
    background-color: #ffffff;
}

.about_certificate .certificate_header {
    text-align: center;
    margin-bottom: 4rem;
}

.about_certificate .certificate_header .certificate_title {
    font-size: 2rem;
    font-weight: 700;
    color: #333333;
    margin-bottom: 1.5rem;
}

.about_certificate .certificate_header .certificate_desc {
    font-size: 0.875rem;
    color: #999999;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}

.about_certificate .certificate_grid {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.about_certificate .certificate_grid .certificate_item {
    flex: 0 0 calc(20% - 1.2rem);
    max-width: calc(20% - 3.2rem);
    border: 1px solid #dddddd;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.about_certificate .certificate_grid .certificate_item img {
    width: 100%;
    height: auto;
    display: block;
}

.about_choose {
    padding: 6rem 0;
    background-color: #f5f5f5;
}

.about_choose .choose_title {
    font-size: 2rem;
    font-weight: 700;
    color: #333333;
    margin-bottom: 4rem;
}

.about_choose .choose_grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 4rem;
}

.about_choose .choose_grid .choose_item {
    flex: 0 0 calc(50% - 1rem);
    max-width: calc(50% - 1rem);
}

.about_choose .choose_grid .choose_item .choose_item_title {
    font-size: 1rem;
    font-weight: 600;
    color: #333333;
    margin-bottom: 0.75rem;
}

.about_choose .choose_grid .choose_item .choose_item_desc {
    font-size: 0.875rem;
    color: #666666;
    line-height: 1.6;
}

.about_choose .choose_logos {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.about_choose .choose_logos img {
    height: 60px;
    width: auto;
}

@media (max-width: 1200px) {
    .about-container {
        width: 92%;
        padding: 0 0.75rem;
    }
    
    .about_content .about_main {
        gap: 3rem;
    }
    
    .about_content .about_stats .stat_item .stat_value {
        font-size: 2rem;
    }

    .about_certificate .certificate_grid .certificate_item {
        flex: 0 0 calc(33.333% - 1rem);
        max-width: calc(33.333% - 1rem);
    }
}

@media (max-width: 768px) {
    .about-container {
        width: 95%;
        padding: 0 0.5rem;
    }
    
    .about_production {
        padding: 3rem 0;
    }
    
    .about_production .production_title {
        font-size: 1.5rem;
        margin-bottom: 2rem;
    }

    .about_production .production_grid {
        gap: 1rem;
        margin-bottom: 2rem;
    }
    
    .about_content {
        padding: 3rem 0;
    }
    
    .about_content .about_main {
        flex-direction: column;
        gap: 2rem;
        margin-bottom: 3rem;
    }
    
    .about_content .about_text,
    .about_content .about_image {
        max-width: 100%;
    }
    
    .about_content .about_text .about_title {
        font-size: 1.25rem;
    }
    
    .about_content .about_text .about_desc {
        font-size: 0.75rem;
    }
    
    .about_content .about_stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }
    
    .about_content .about_stats .stat_item {
        flex-basis: 50%;
    }
    
    .about_content .about_stats .stat_item .stat_value {
        font-size: 1.5rem;
    }
    
    .about_certificate {
        padding: 3rem 0;
    }
    
    .about_certificate .certificate_header {
        margin-bottom: 2rem;
    }
    
    .about_certificate .certificate_header .certificate_title {
        font-size: 1.5rem;
    }
    
    .about_certificate .certificate_header .certificate_desc {
        font-size: 0.75rem;
    }
    
    .about_certificate .certificate_grid {
        gap: 1rem;
    }
    
    .about_certificate .certificate_grid .certificate_item {
        flex: 0 0 calc(50% - 0.5rem);
        max-width: calc(50% - 0.5rem);
    }
    
    .about_choose {
        padding: 3rem 0;
    }
    
    .about_choose .choose_title {
        font-size: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .about_choose .choose_grid {
        gap: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .about_choose .choose_grid .choose_item {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .about_choose .choose_grid .choose_item .choose_item_title {
        font-size: 0.9rem;
    }
    
    .about_choose .choose_grid .choose_item .choose_item_desc {
        font-size: 0.75rem;
    }
    
    .about_choose .choose_logos {
        justify-content: center;
        gap: 1.5rem;
    }
    
    .about_choose .choose_logos img {
        height: 40px;
    }
}

@media (max-width: 480px) {
    .about_production .production_title {
        font-size: 1.125rem;
    }
    
    .about_content .about_text .about_title {
        font-size: 1.125rem;
    }
    
    .about_content .about_stats .stat_item .stat_value {
        font-size: 1.25rem;
    }
    
    .about_content .about_stats .stat_item .stat_label {
        font-size: 0.7rem;
    }
    
    .about_certificate .certificate_grid .certificate_item {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .about_choose .choose_logos img {
        height: 35px;
    }
}