:root {
    font-size: 16px;
    line-height: 1.75;
    font-weight: 400;
    font-family: "Roboto Slab", Arial, Helvetica, sans-serif;

    /* 版心宽度 */
    --container-width: 1200px;
    /* 面包屑背景颜色 */
    --bread-crumb-bg: #eee;
    /* 右侧最大宽度 */
    --right-max-width: 380px;
    /* 左侧最大宽度 */
    --left-max-width: 680px;
    /* 表单按钮提交背景颜色 */
    --sumbit-btn-bg: #efefef;
    /* 表单容器背景颜色 */
    --form-container-bg: #fff;
    /* 富文本中列表点的颜色 */
    --dotBg: #000;
    /*
                ......
            */
}

.container {
    width: var(--container-width);
    max-width: 100%;
    margin: 0 auto;
    padding: 0 10px;
    box-sizing: border-box;
}

.rich-text h1,
.rich-text h2,
.rich-text h3,
.rich-text h4,
.rich-text h5,
.rich-text h6,
.rich-text p,
.rich-text img {
    margin-bottom: 30px;
}

.rich-text li {
    position: relative;
    margin-bottom: 15px;
    padding-left: 20px;
}

.rich-text li::before {
    content: '';
    display: block;
    position: absolute;
    top: 7px;
    left: 0;
    width: 10px;
    height: 10px;
    background-color: var(--dotBg);
    border-radius: 50%;
}

.seo-blog section {
    margin: 100px 0;
}

/* banner背景图 */
.seo-blog-banner {
    height: 400px;
    background: url('../imgs/p03-banner-bg.jpg') no-repeat center;
    display: flex;
    align-items: center;
}

.blog-bread-crumb {
    padding: 10px 0;
    background-color: var(--bread-crumb-bg)
}

.blog-bread-crumb i {
    margin: 0 10px;
}

.seo-blog-content .container {
    display: flex;
}

.seo-blog-content .left {
    flex: 1;
    max-width: var(--left-max-width);
    margin-right: 30px
}

.seo-blog-content .right {
    flex: 1;
    max-width: var(--right-max-width);
    align-self: flex-start;
    margin-left: auto;
    margin-right: 0;
}

.other-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.date-wrap i {
    margin-right: 5px;
}

.soical-media a {
    margin-right: 5px;
    font-size: 20px;
}

.recent-blog {
    padding: 20px 30px 20px;
    box-shadow: 0px 20px 30px 0px rgba(84, 87, 93, 0.1);
    border-radius: 10px;
    margin-bottom: 80px;
}

.quote-form-wrap {
    position: relative;
}

.quote-form.sticky {
    position: fixed;
    z-index: 2;
    top: 160px;
}

.quote-form {
    position: absolute;
    padding: 20px 25px;
    box-shadow: 0px 20px 30px 0px rgba(84, 87, 93, 0.1);
    border-radius: 10px;
    background-color: var(--form-container-bg);
}

.recent-blog h3 {
    margin-bottom: 10px;
}

.quote-form h3 {
    margin-bottom: 20px;
    text-align: center;
}

.recent-blog li {
    padding: 5px 0 5px 10px;
    border-bottom: 1px solid #eee;
    margin-bottom: 5px;
}

.blog-form label {
    display: block;
    margin-bottom: 15px;
}

.blog-form input:not([type=submit]),
.blog-form textarea {
    width: 100%;
    outline: none;
    box-sizing: border-box;
    padding: 8px 15px;
    border: 1px solid rgba(221, 221, 221, .6);
}

.blog-form .wpcf7-submit {
    background-color: var(--sumbit-btn-bg);
    width: 100%;
    font-weight: 600;
    padding: 15px 0;
    margin: 0;
    border: none;
}

.seo-blog-related h2 {
    font-size: 40px;
    margin-bottom: 30px;
}

.cols-4 {
    display: flex;
    flex-wrap: wrap;
    margin-left: -10px;
    margin-right: -10px;
}

.cols-4 li {
    max-width: 280px;
    width: calc(25% - 20px);
    margin: 0 10px 30px 10px;
}

.cols-4 h4 {
    text-align: center;
}

.cols-4 .img-wrap {
    margin-bottom: 15px;
}

@media screen and (max-width: 1023px) {
    .seo-blog-content .container {
        flex-direction: column;
    }

    .seo-blog-content .left {
        max-width: unset;
        width: 100%;
        margin-bottom: 30px;
    }

    .seo-blog-content .right {
        max-width: unset;
        width: 100%;
        margin: 0 auto;
    }

    .quote-form {
        position: relative;
    }
}

@media screen and (max-width: 767px) {
    .seo-blog-related h2 {
        font-size: 28px;
    }

    .cols-4 li {
        max-width: unset;
        width: calc(50% - 20px);
    }
}

@media screen and (max-width: 450px) {
    .cols-4 li {
        max-width: unset;
        width: calc(100% - 20px);
    }
}