.top-bg {
    background-repeat: no-repeat;
    background-size: 100% 63.7rem;
    width: 100%;
}

.containter {
    width: 100%;
    max-width: 750px;
    margin: 0 auto;
}

.middle-box {
    padding-top: 2rem;
    width: 100%;
    /* 从右到左线性渐变：#1648E3 到 #0F39B2 */
    background: linear-gradient(to right, #1648E3 0%, #0F39B2 100%);


}

.button-box {
    margin-left: 1rem;
    margin-right: 1rem;
    background: #3157CB;
    border-radius: 0.4rem 0.4rem 0.4rem 0.4rem;
    border: 0.05rem solid #3157CB;
    padding: 2.5rem 1.2rem 2rem 1.2rem;

}

.button-item {
    display: block;
    margin-bottom: 1.8rem;
    background-color: transparent;
    border: none;
}

.button-item img {
    width: 100%;
}


.button-box p {
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: 500;
    font-size: 0.8rem;
    color: #FFFFFF;
    text-align: center;
    font-style: normal;
    text-transform: none;
}


.containter-qa {
    width: 100%;
    max-width: 750px;
    margin: 0 auto;
    background: #E8F1F9;
    min-height: 100%;
}

.top-bg-qa {
    background: url(../images/100wenlist-bg.jpg);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    width: 100%;
    height: 18rem;
}

.qa-list {
    margin-top: -9rem;
    margin-left: 1rem;
    margin-right: 1rem;
    background: #FFFFFF;
    border-radius: 0.33rem 0.33rem 0.33rem 0.33rem;
    border: 0.04rem solid #FFFFFF;
    padding: 1.5rem 0.75rem;
}

.qa-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 0.1rem dashed  #E8F1F9;
}

.qa-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.qa-item a{
    display: flex;
}

.qa-video-box {
    width: 5rem;
    height: 3.2rem;
    flex-shrink: 0;
    margin-right: 0.7rem;
    border: 0.1rem solid #3899FF
}

.qa-video-img {
    width: 100%;
    height: 100%;
    border-radius: 0.1rem;
    object-fit: cover;
}

.qa-play-icon {
    width: 0.7rem;
    height: 0.7rem;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.qa-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.qa-title {
    font-weight: 500;
    font-size: 0.65rem;
    color: #000000;
    line-height: 0.85rem;
    margin-bottom: 0.67rem;
}

.qa-time {
    padding: 0.1rem 0.2rem;
    width: fit-content;
    display: flex;
    align-items: center;
    background: #F1F4F8;
    border-radius: 0.6rem 0.6rem 0.6rem 0.6rem;
}

.qa-time-icon {
    width: 0.57rem;
    height: 0.57rem;
    margin-right: 0.25rem;
}

.qa-time-text {
    font-weight: 400;
    font-size: 0.48rem;
    color: #6BA4EC;
}

.video-content{
    background: url(../images/shipin-bg.jpg);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    width: 100%;
    height:40rem;
}

/* 视频详情页：视频盒子居中 */
.vidoe_box {
    display: flex;
    flex-direction: column; /* 垂直排列：视频在上、标题在下 */
    align-items: center; /* 水平居中 */
    justify-content: center; /* 在可用高度内垂直居中 */
    width: 100%;
    height: 100%;
    max-width: 750px;
    margin: 0 auto;
    padding: 1rem 0;
    box-sizing: border-box;
}

.vidoe_box video {
    width: 92%;
    height: auto;
    max-width: 100%;
    display: block;
}

/* 视频标题样式 */
.video-title {
    margin-top: 0.2rem;
    color: #FFFFFF;
    font-weight: 600; /* 加粗 */
    font-size: 1rem;
    text-align: center;
    line-height: 1.4rem;
}