.about-container {
    width: 100%;
}

.about-banner {
    width: 100%;
    overflow: hidden;
}

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

.about-content {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding-bottom: 50px;
    box-sizing: border-box;
}

.breadcrumb {
    padding: 15px 0;
    font-size: 14px;
    color: #666666;
    border-bottom: 1px solid #eeeeee;
    margin-bottom: 20px;
}

.breadcrumb a {
    color: #666666;
    text-decoration: none;
}

.breadcrumb a:hover {
    color: #0088cc;
}

.about-section {
    padding: 40px 0;
    text-align: center;
}

.section-title {
    font-size: 32px;
    font-weight: bold;
    color: #222222;
    margin-bottom: 5px;
    text-transform: capitalize;
}

.title-arrow {
    font-size: 18px;
    color: #999999;
    margin-bottom: 25px;
}

.profile-content {
    width: 100%;
    text-align: justify;
    line-height: 1.8;
    color: #555555;
    font-size: 14px;
}

.profile-content p {
    margin-bottom: 15px;
}

.tour-section {
    background-color: #f7f9fa;
    padding: 50px 20px;
    box-sizing: border-box;
}

.tour-slider {
    position: relative;
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.tour-gallery {
    width: 100%;
    overflow: hidden;
}

.tour-track {
    display: flex;
    gap: 20px;
    transition: transform 0.4s ease-in-out;
    will-change: transform;
}

.tour-item {
    flex: 0 0 calc((100% - 40px) / 3);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    background: #ffffff;
    border-radius: 4px;
    overflow: hidden;
    box-sizing: border-box;
}

.tour-item img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    display: block;
}

.slider-btn {
    background: transparent;
    border: none;
    font-size: 28px;
    color: #0088cc;
    cursor: pointer;
    padding: 10px 15px;
    transition: color 0.3s;
    z-index: 10;
}

.slider-btn:hover {
    color: #005580;
}

.prev-btn {
    position: absolute;
    left: 0px;
}

.next-btn {
    position: absolute;
    right: 0px;
}

.cert-section {
    padding: 50px 0;
    background: #ffffff;
}

.cert-intro {
    width: 100%;
    margin: 0 auto 30px auto;
    text-align: justify;
    line-height: 1.8;
    color: #555555;
    font-size: 14px;
}

.cert-list {
    display: flex;
    justify-content: flex-start;
    gap: 20px;
    flex-wrap: wrap;
    width: 100%;
    margin: 0 auto;
}

.cert-card {
    background: #ffffff;
    border: 1px solid #e5e5e5;
    padding: 15px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    width: calc((100% - 80px) / 5);
    box-sizing: border-box;
}

.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.1);
}

.cert-img {
    width: 100%;
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f9f9f9;
    margin-bottom: 12px;
}

.cert-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.cert-card h3 {
    font-size: 16px;
    color: #333333;
    font-weight: 600;
    margin: 0;
}

@media (max-width: 1200px) {
    .about-content {
        padding: 0 20px 50px 20px;
    }
    .cert-card {
        width: calc((100% - 60px) / 4);
    }
}

@media (max-width: 992px) {
    .cert-card {
        width: calc((100% - 40px) / 3);
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 24px;
    }

    .tour-track {
        gap: 0;
    }

    .tour-item {
        flex: 0 0 100%;
        box-shadow: none;
    }

    .tour-item img {
        height: 200px;
    }

    .slider-btn {
        font-size: 20px;
        padding: 5px 10px;
    }

    .cert-list {
        gap: 15px;
    }

    .cert-card {
        width: calc((100% - 15px) / 2);
    }

    .cert-img {
        height: 180px;
    }
}