.breakcrumb {
    width: 70vw;
    left: 15vw;
    position: relative;
    display: flex;
    gap: 2vw;
    padding: 1vw 0;
}


.breakcrumb_item{
    color: var(--black);
    font-family: var(--font-family-montserrat);
    font-size: var(--font-size-m);
    font-style: normal;
    font-weight: 400;
    position: relative;
}

.breakcrumb_item a{ 
    color: #000;
}

.breakcrumb_item::after {
    content: "";
    width: 1px;
    height: 60%;
    background-color: #000;
    position: absolute;
    right: -1vw;
    top: 20%;
}

.breakcrumb_item.last a{ 
    color: var(--green-pea);
    font-weight: 700;
}

.breakcrumb_item.last::after {
    display: none;
}

#kh_header{
    width: 100vw;
    height: 10vw;  
    text-align: center;  
}

#kh_header h1 {
    position: absolute;
    color: var(--green-pea);
    font-family: var(--font-family-uvn_van-bold);
    font-size: var(--font-size-xxxxl);
    font-style: normal;
    font-weight: 700;
    padding: 0;
    top: 2vw;
    width: 70vw;
    left: 15vw;
    text-transform: uppercase;
}

.youtube_video {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.youtube_video iframe {
    width: 100%;
    max-width: 100%;
    aspect-ratio: 16 / 9;
    border: none;
}

#kh_header h3 {
    position: absolute;
    color: var(--green-pea);
    font-family: var(--font-family-uvn_van-bold);
    font-size: var(--font-size-xxl);
    font-style: normal;
    font-weight: 700;
    padding: 0;
    top: 10vw;
    width: 70vw;
    left: 15vw;
    text-transform: uppercase;
}

#kh_main {
    width: 64vw;
    left: 18vw;
    position: relative;
    display: flex;
    gap: 3vw;
    margin-top: 3vw;
}

#kh_sidebar{
    width: 21vw;
    height: auto;
    margin-bottom: 3vw;
}

#kh_sidebar .info {
    background-color: var(--bay-of-many);
    padding: 1.6vw;
    color: #fff;
    border-radius: 1vw 1vw 0 0;
}

#kh_sidebar .sub_text,
#kh_sidebar .sub_text p{
    color: var(--white);
    font-family: var(--font-family-montserrat);
    font-size: var(--font-size-m);
    font-style: normal;
    font-weight: 400;
    line-height: 1vw;
}

#kh_sidebar .info h2{
    color: var(--supernova);
    font-family: var(--font-family-uvn_van-bold);
    font-size: var(--font-size-xxl);
    font-style: normal;
    font-weight: 700;
    text-transform: uppercase; 
}

#kh_main article{
    width: 40vw;
}

#kh_sidebar .cta {
    width: 40%;
    text-align: center;
}

#kh_sidebar .price{
    width: 60%;
}

#kh_sidebar .cta button {
    border: none;
    border-radius: 10px;
    text-decoration: none;
    background-color: var(--supernova);
    color: var(--green-pea);
    font-family: var(--font-family-montserrat);
    font-size: var(--font-size-m);
    font-style: normal;
    font-weight: 700;
    width: 7vw;
    height: 2vw;
    margin-top: 0.7vw;
}

#kh_sidebar .price_1 {
    color: var(--white);
    font-family: var(--font-family-uvn_van-bold);
    font-size: var(--font-size-xxl);
    font-style: normal;
    font-weight: 700;
    position: relative;
}

#kh_sidebar .price_1:after {
    background-color: var(--white);
    content: '';
    width: 110%;
    height: 1px;
    position: absolute;
    bottom: 9px;
    left: -6px;
    z-index: 3;
}

#kh_sidebar .price_2{
    color: var(--supernova);
    font-family: var(--font-family-uvn_van-bold);
    font-size: var(--font-size-xxxl);
    font-style: normal;
    font-weight: 700;
}

#kh_sidebar .info>.flex{
    margin-top: 2vw;
}

#kh_sidebar .square_box{
    border-radius: 0vw;
}

#kh_sidebar .mota {
    display: inline-block;
    padding: 1vw;
    border-radius: 0 0 1vw 1vw;
    width: 100%;
}

.main_khoahoc {
    margin-bottom: 3vw;
}

.kh_title{
    color: var(--green-pea);
    font-family: var(--font-family-montserrat);
    font-size: var(--font-size-xxxl);
    font-style: normal;
    font-weight: 600;
}

.kh_desc h2,
.kh_desc h3{
    font-size: 1vw;
}  

.kh_desc{
    height: 8vw;
    overflow: hidden;
    position: relative;
    transition: height 0.3s ease;
    padding-bottom: 2vw;
}

.kh_desc.expanded {
    height: auto; 
}

.show_more{
    display: none;    
}

.show_more.active{
    position: absolute;
    bottom: 0;
    left: 0;
    text-align: center;
    width: 100%;
    align-content: center;
    height: 2vw;
    background: #fff;
    color: var(--green-pea);
    font-family: var(--font-family-montserrat);
    font-size: var(--font-size-m);
    font-style: normal;
    font-weight: 700;
    cursor: pointer;
}



.main_khoahoc .tieude {
    width: 100%;
    min-height: 3vw;
    background-color: var(--supernova);
    align-content: center;
    border-radius: 1vw 1vw 0 0;
    color: var(--green-pea);
    font-weight: 700;
    box-sizing: border-box;
    padding: 0.5vw 1vw;
    margin-bottom: 5px;
}

.hocphan {
    width: 100%;
    min-height: 3vw;
    background-color: #e6e6e6;
    align-content: center;
    padding-left: 1vw;
    color: var(--green-pea);
    margin: 0.2vw 0;
    position: relative;
    padding: 0.5vw 1vw;
    box-sizing: border-box;
}

.hocphan span{
    position: absolute;
    width: 1vw;
    height: 1vw;
    right: 1vw;
    top: 1vw;
    background-image: url('/wp-content/themes/growdemy/images/icon_down.png');
    /* background-color: #fff; */
    background-size: 100%;
    background-repeat: no-repeat;
}

.hocphan.active span{
    background-image: url('/wp-content/themes/growdemy/images/icon_up.png');
}

.hocphan span>img{
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.hoclieu_list {
    padding-left: 1vw;
    height: 0;
    overflow: hidden;
    
}

.hoclieu_list {
    padding-left: 1vw;
    height: 0;
    overflow: hidden;
    transition: height 0.3s ease;
}

.hoclieu_list.active{
    height: auto;
}

.hoclieu {
    width: 100%;
    background-color: #e6e6e6;
    align-content: center;
    color: var(--green-pea);
    border: 1px #ccc solid;
    margin: 0.2vw 0;
    min-height: 3vw;
    padding: 0.5vw 1vw;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.title_hl {
  flex: 1 1 auto; /* giúp tiêu đề mở rộng mà không đè lên nút */
  margin-right: 10px; /* tạo khoảng cách với nút */
}

a.hth{
    border: 1px #ccc solid;
    padding: 2px 5px;
    border-radius: 6px;
    background-color: #e6e6e6;
    font-size: 70%;
}

.unlock_icon{
    max-width: 1vw;
}

@media screen and (max-width: 768px) {
    #kh_main {
        width: 90vw;
        left: 5vw;
        flex-direction: column;
    }

    #kh_sidebar {
        width: 100%;
        height: auto;
        margin-bottom: 3vw;
    }

    #kh_sidebar .info h2 {
        font-size: 3.5vw;
        padding-left: 3vw;
    }

    #kh_sidebar .sub_text, #kh_sidebar .sub_text p {
        font-size: 2.5vw;
        font-style: normal;
        font-weight: 400;
        line-height: 3.2vw;
        padding: 0 2vw;
    }

    .kh_desc h2, .kh_desc h3 {
        font-size: 4vw;
    }

    #kh_sidebar .cta button {
        font-size: 3vw;
        width: 26vw;
        height: 6vw;
        margin-top: 1.7vw;
        margin-left: 1vw;
    }

    #kh_sidebar .price_1 {
        font-size: 4vw;
    }

    #kh_sidebar .price_2 {
        font-size: var(--font-size-xxxl);
        padding-top: 10px;
        display: inline-block;
    }

    #kh_sidebar .mota p {
        font-size: 3vw;
        padding: 0 3vw;
        line-height: 4vw;
    }

    #kh_main article {
        width: 100%;
    }

    .kh_title {
        font-size: 4vw;
    }

    .main_khoahoc .tieude {
        font-size: 3.5vw;
        width: 100%;
        min-height: 7vw;
        background-color: var(--supernova);
        align-content: center;
        border-radius: 1vw 1vw 0 0;
        color: var(--green-pea);
        font-weight: 700;
        box-sizing: border-box;
        padding: 2.5vw 3vw;
    }

    .kh_desc {
        height: 28vw;
        overflow: hidden;
        position: relative;
        transition: height 0.3s ease;
        padding-bottom: 2vw;
    }

    .kh_desc p {
        font-size: 3vw;
        line-height: 4vw;
    }

    .show_more.active {
        width: 100%;
        height: 7vw;
        font-size: 3vw;
        opacity: 0.8;
    }

    .hocphan {
        font-size: 4vw;
        width: 100%;
        min-height: 8vw;
        background-color: #e6e6e6;
        align-content: center;
        padding-left: 1vw;
        color: var(--green-pea);
        margin: 1.2vw 0;
        position: relative;
        padding: 2.5vw 2vw;
        box-sizing: border-box;
    }

    .hocphan span {
        position: absolute;
        width: 3vw;
        height: 3vw;
        right: 4vw;
        top: 3vw;
        background-image: url(/wp-content/themes/growdemy/images/icon_down.png);
        background-size: 100%;
        background-repeat: no-repeat;
    }

    .hoclieu {
        font-size: 3.5vw;
        width: 100%;
        background-color: #e6e6e6;
        align-content: center;
        color: var(--green-pea);
        border: 1px #ccc solid;
        margin: 2.2vw 0;
        min-height: 7vw;
        padding: 1.5vw 2vw;
        box-sizing: border-box;
    }

    #kh_header {
        width: 100vw;
        height: 30vw;
        text-align: center;
    }
}