#course-section-1.banner {
    padding: 10% 0;
    position: relative;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: top center;
}

#course-section-1.banner::after {
    content: "";
    background-color: rgba(0, 0, 0, 0.35);
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    z-index: 1;
    position: absolute;
}

#course-section-1.banner .box-text {
    max-width: 1110px;
    width: 100%;
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 2;
    position: relative;
    padding: 0 10px;
}

#course-section-1.banner .box-text .title {
    text-shadow: 0 4px 4px rgba(0, 0, 0, 0.2);
    margin-bottom: 28px;
}

#course-section-1.banner .box-text .desc {
    max-width: 670px;
    text-align: center;
    margin: auto;
    margin-bottom: 32px;
    text-shadow: 0 4px 4px rgba(0, 0, 0, 0.2);

}

#course-section-1.banner .box-text .desc.desc-style-1 {
    font-size: 20px;
}

#course-section-1.banner .box-text .btn-style-1 {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    padding: 12px 40px
}

/* Section 2 */
#course-section-2.vi-sao {
    padding: 60px 0;
}

.list-why {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    margin-top: 48px;
    padding: 0 40px;
}

.list-why .icon-box {
    display: flex;
}

.list-why .inner-box {
    box-shadow: 0 1px 14px 0 rgba(0, 56, 255, 0.2);
    border-top-left-radius: 50px;
    border-top-right-radius: 4px;
    border-bottom-left-radius: 4px;
    border-bottom-right-radius: 4px;
    display: flex;
    flex-direction: column;
}

.list-why .box-icon {
    margin-top: -40px;
    margin-bottom: 20px;
    text-align: center;
}

.list-why .inner-box .box-text {
    padding: 0 15px;

}

.list-why .inner-box .box-text .title {
    position: relative;
    padding-bottom: 10px;
    margin-bottom: 20px;
    color: var(--c-primary);
    line-height: 36px;
}

.list-why .inner-box .box-text .title::after {
    content: "";
    width: 61%;
    height: 2px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, rgba(64, 102, 240, 1) 0%, rgba(57, 85, 183, 1) 100%);
    bottom: 0;

}

.list-why .inner-box .box-text .desc {
    padding: 0 15px;
    color: #0F1B44;
}

/* section 3 */
#course-section-3.hinh-thuc-hoc {
    padding: 60px 0;
}

.list-hinh-thuc {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-top: 44px;
}

.list-hinh-thuc .item {


    /* overflow: hidden; */
    position: relative;
}

.list-hinh-thuc .item .wrapper {
    box-shadow: 0 1px 12px 0 rgba(65, 107, 255, 0.2);
    border-radius: 15px;
    padding: 28px;
    position: relative;
    z-index: 2;
    background: #fff;
}

.list-hinh-thuc .item-1::after,
.list-hinh-thuc .item-2::after {
    content: "";
    background-color: var(--c-primary);
    border-radius: 15px;
    height: 100%;
    width: 100%;
    position: absolute;
    bottom: -12px;
}

.list-hinh-thuc .item-1::after {
    left: -12px;
}

.list-hinh-thuc .item-2::after {
    right: -12px;
}

.list-hinh-thuc .item .title {
    color: var(--c-primary);
    margin-bottom: 20px;
}

.list-hinh-thuc .item .desc ul {
    list-style: none;
    padding-left: 1rem;
}

.list-hinh-thuc .item .desc ul li {
    margin-bottom: 12px;
    position: relative;
    font-size: 18px;
    padding-left: 10px;
}

.list-hinh-thuc .item .desc ul li::marker {
    content: '\f00c';
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: #FF4D53;
}

#details-section-1 .box-text {
    position: absolute;
    top: 12%;
    left: 5%;
    z-index: 2;
}

#details-section-1 .box-text .title {
    text-shadow: 0 4px 4px rgba(39, 61, 139, 0.80);
    line-height: 36px;
}

#details-section-1 .box-text .desc {
    max-width: 417px;
}

#details-section-1 .box-text p {
    text-shadow: 0 3px 3px rgba(39, 61, 139, 0.80);
    font-size: 20px;

}

#details-section-1 .box-image {
    position: relative;
    border-radius: 20px;
    aspect-ratio: 32/13;
    overflow: hidden;
}

#details-section-1 .box-image::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.15);
    z-index: 1;
}

#details-section-2 {
    padding: 60px 0;
}

#details-section-2 .list-kh-desc {
    margin-top: 60px;
}

#details-section-2 .item-kh-desc {
    background-color: #FEF1E2;
    border-radius: 20px;
    padding: 68px 42px 41px 43px;
    position: relative;
}

#details-section-2 .item-kh-desc .box-icon {
    position: absolute;
    top: 0;
    left: 50%;
    top: -23%;

    transform: translateX(-50%);
}

#details-section-2 .item-kh-desc .box-icon img {
    border-radius: 24px;
    border: solid 7px #fff;
}

#details-section-2 .item-kh-desc:nth-child(2) {
    background-color: #F0FAEB;
}

#details-section-2 .item-kh-desc:nth-child(3) {
    background-color: #F6ECFF;
}

.list-kh-desc {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

#details-section-3 {
    padding: 60px 0;
    background-repeat: no-repeat;
    background-size: contain;
    background-position: right;
    background-color: #314BA6;
}

#details-section-3 .accordion-button::after {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none'%3E%3Cpath d='M12 20.6241C11.3527 20.6241 10.8281 20.0996 10.8281 19.4522V4.54785C10.8281 3.90051 11.3527 3.37598 12 3.37598C12.6473 3.37598 13.1719 3.90051 13.1719 4.54785V19.4522C13.1719 20.0996 12.6473 20.6241 12 20.6241Z' fill='%23F15B22'/%3E%3Cpath d='M19.4513 13.1719H4.54688C3.89953 13.1719 3.375 12.6473 3.375 12C3.375 11.3527 3.89953 10.8281 4.54688 10.8281H19.4513C20.0986 10.8281 20.6231 11.3527 20.6231 12C20.6231 12.6473 20.0986 13.1719 19.4513 13.1719Z' fill='%23F15B22'/%3E%3C/svg%3E");
    border-radius: 6px;
    background-color: #F7F7F8;
    width: 40px;
    height: 40px;
    background-position: center;
}

#details-section-3 .accordion-button:not(.collapsed)::after {
    transform: none !important;
}

#details-section-3 .accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none'%3E%3Cpath d='M19.4513 13.1719H4.54688C3.89953 13.1719 3.375 12.6473 3.375 12C3.375 11.3527 3.89953 10.8281 4.54688 10.8281H19.4513C20.0986 10.8281 20.6231 11.3527 20.6231 12C20.6231 12.6473 20.0986 13.1719 19.4513 13.1719Z' fill='%23F15B22'/%3E%3C/svg%3E");

}

#details-section-5 {
    padding-top: 80px;
}

.hvxs-item {
    box-shadow: 0 1px 10px 0 rgba(0, 0, 0, 0.16);
    border-radius: 10px;
    background-color: #fff;
    overflow: hidden;
}

.hvxs-item .thumb {
    border-radius: 10px;
    /* overflow: hidden; */
    position: relative;
}

.hvxs-item .content {
    padding: 20px;
    position: relative;
    z-index: 2;
    background-color: #fff;
}

.hvxs-item .show-video {
    width: 100%;
    height: 58px;
    display: flex;
    align-items: center;
    padding: 0 20px;
    color: #fff !important;
    background-color: rgba(39, 61, 139, 0.92);
    transform: translateY(100%);
    position: absolute;
    bottom:0;
    left: 0;
    transition: 0.3s all;
    justify-content: space-between;
}

.hvxs-item:hover .show-video {
    transform: translateY(0%);
}


.show-video.active {
    transform: translateY(0%);
}

.hvxs-item a::before {}

@media screen and (max-width:768px) {
    .list-why {
        grid-template-columns: repeat(2, 1fr);
        padding: 0;
    }

    .list-why .icon-box {
        margin-bottom: 40px;
    }

    .list-hinh-thuc {
        grid-template-columns: repeat(1, 1fr);
    }
}

@media screen and (max-width:425px) {
    .list-why {
        grid-template-columns: repeat(1, 1fr);
        padding: 0;
    }

    .list-hinh-thuc {
        grid-template-columns: repeat(1, 1fr);
    }
}