.section-banner {
    height: 380px;
    display: flex;
    padding-top: 120px;
    justify-content: center;
    background: url(../../images/sub-pc/help-center-banner.jpg) no-repeat center / cover;
}

.section-title {
    height: 83px;
    background: url(../../images/sub-pc/help-center-title.png) no-repeat left / 189px 83px;
}

.section-nav {
    height: 62px;
    border-bottom: 1px solid #eee;
    margin-bottom: 60px;
}

.section-nav-item {
    line-height: 61px;
    margin-right: 60px;
}

.section-nav-item.on {
    position: relative;
    color: #ddaf59;
    font-weight: 500;
}

.section-nav-item.on:after {
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    background-color: #ddaf59;
    position: absolute;
    bottom: -1px;
    left: 0;
}

.help-left-nav {
    width: 240px;
    margin-right: 40px;
}

.help-nav-title {
    height: 48px;
    line-height: 48px;
}

.help-sub-nav {
    margin-bottom: 40px;
}

.help-sub-nav li {
    height: 48px;
    line-height: 48px;
}

.help-sub-nav li.on {
    color: #ddaf59;
    font-weight: 600;
}

.help-heading {
    margin-bottom: 20px;
    font-size: 32px;
    line-height: 45px;
}

.help-content {
    padding: 20px 0;
    border-bottom: 1px solid #eee;
}

.help-content .help-sub-heading {
    padding-left: 30px;
    background: url(../../images/sub-pc/help-fold-icon.png) no-repeat left center / 20px 20px;
}

.help-content.unfold .help-sub-heading {
    margin-bottom: 12px;
    background: url(../../images/sub-pc/help-unfold-icon.png) no-repeat left center / 20px 20px;
}

.help-text {
    padding: 20px;
    background: #F8F8F8;
    border-radius: 8px;
    overflow: hidden;
    max-height: 600px;
    transition: max-height 0.35s ease, padding 0.35s ease;
}

.help-text.nds {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
}