.section-box .section:nth-child(even) { background-color: #f6f8fb; }
.section-box .section:nth-child(odd) { background-color: #fff; }

.why-box { margin-top: 40px; margin-bottom: 40px; }
.why-box .why-item { text-align: center; }
.why-box .why-item .item-icon { height: 170px; width: 170px; margin: 0 auto; position: relative; }
.why-box .why-item .item-icon img { position: absolute; margin: auto; top: 0; bottom: 0; left: 0; right: 0; }
.why-box .why-item .item-name { font-size: 26px; line-height: 2; margin-bottom: 10px; }
.why-box .why-item .item-desc { line-height: 26px; color: #999999; }

.sec-seo-why .site-adv-list .adv-item{ padding: 15px; max-width: 50%; flex: 0 0 50%; cursor: pointer;}
.sec-seo-why .site-adv-list .adv-item .box{ background-color: #fff; padding: 25px; display: flex; flex-direction: column; justify-content: center; align-items: center;flex-direction: row; height: 100%;     box-shadow: 0 0 15px rgb(0 0 0 / 10%);}
.sec-seo-why .site-adv-list .adv-item .box img{ padding-right:20px; width: 80px;}
.sec-seo-why .site-adv-list .adv-item .box dt{ font-size: 20px; font-weight: bold;}
.sec-seo-why .site-adv-list .adv-item .box dd{ margin-top: 10px; line-height: 1.6; color: #999;}
.sec-seo-why .sec-foot{ margin-top: 30px;}

.sx-box { margin-top: 50px; }
.sx-box .box-txt { padding-left: 90px; }
.sx-box .box-txt ul { border-bottom: 1px dashed #EEEEEE; padding: 30px 0; }
.sx-box .box-txt ul li { line-height: 30px; color: #666666; font-size: 16px; position: relative; }
.sx-box .box-txt ul li:before { content: ''; width: 6px; height: 6px; background-color: #d9e2ee; border-radius: 50%; position: absolute; left: -25px; margin: auto; top: 0; bottom: 0; }
.sx-box .box-txt ul:last-child { border-bottom: none; }
.sx-box .box-img { width: 870px; text-align: center; }