@charset "UTF-8";
html,
body,
div,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
button,
textarea,
p,
blockquote,
th,
td {
  font-family: "Hiragino Sans GB", "Hiragino Sans GB W3", "Microsoft YaHei", Arial, Helvetica, sans-serif;
  font-size: "12px";
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 62.5%;
}

.container-fluid {
  padding-left: 0px;
  padding-right: 0px;
}

.db {
  display: block;
  width: 100%;
}

/* 
    箭头
    @include arrow(direction,size,color);
**/
/*
    超出省略号
    @include ell();
 * */
/*
    inline-block
    @include inline_block();
 * */
/*
    font-size of REM
    @include font_size(fz);
 * */
.about_section_1 {
  background: #fff url(../images/aboutus/bg_1.png) center bottom no-repeat;
  background-size: 100% auto;
}

.about_section_1 .flex {
  align-items: center;
  padding-top: 30px;
}

.about_section_1 .txt_con {
  width: 50%;
  padding-right: 5%;
}

.about_section_1 .txt_con p {
  font-size: 18px;
  font-size: 1.8rem;
  line-height: 1.8;
}

.about_section_1 .txt_con p strong{
  font-size: 20px;
}

.about_section_1 .img_con {
  width: 50%;
}

.about_section_1 .img_con img {
  display: block;
  width: 100%;
}

.about_section_2 {
  background: url(../images/aboutus/bg_2.png) center no-repeat;
  background-size: cover;
}

.about_section_2 .flex {
  padding-top: 30px;
  align-items: stretch;
}

.about_section_2 .flex li {
  width: calc(100% / 4 - 30px * 3 / 4);
  margin-right: 30px;
  background-color: #fff;
  padding: 30px;
  transition: 
    transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    background-color 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform, box-shadow;
  backface-visibility: hidden;
  overflow: hidden;
  position: relative;
}

.about_section_2 .flex li:nth-child(4n) {
  margin-right: 0;
}

.about_section_2 .flex li img {
  display: block;
  margin: 0 auto 40px;
  height: 55px;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.about_section_2 .flex li h3 {
  color: #00778B;
  font-size: 24px;
  font-size: 2.4rem;
  font-weight: 700;
  padding-bottom: 20px;
}

.about_section_2 .flex li p {
  font-size: 16px;
  font-size: 1.6rem;
}

/* 鼠标悬停效果 */
.about_section_2 .flex li:hover {
  /* 轻微缩放，提升层次感 */
  transform: translateY(-5px) scale(1.02);
  /* 增强阴影，突出元素 */
  box-shadow: 0 8px 20px rgba(0, 119, 139, 0.15);
  /* 渐变背景，增加视觉效果 */
  background: linear-gradient(135deg, #f8fcfe 0%, #e8f4f8 100%);
}

/* 悬停时图片轻微旋转+缩放 */
.about_section_2 .flex li:hover img {
  transform: scale(1.1);
}

.about_section_3 {
  background-color: #fff;
}

.about_section_3 .img_con {
  margin-top: 30px;
  position: relative;
}

.about_section_3 .img_con img {
  display: block;
  width: 100%;
}

.about_section_3 .img_con .txt_con {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  text-align: center;
  padding-top: 12%;
}

.about_section_3 .img_con .txt_con h3 {
  font-weight: 700;
  font-size: 32px;
  font-size: 3.2rem;
  padding-bottom: 30px;
  letter-spacing: 2px;
}

.about_section_3 .img_con .txt_con p {
  font-size: 18px;
  font-size: 1.8rem;
}

.about_section_3 .img_con .txt_con p em{
  padding: 0 8px;
  vertical-align: middle;
}

.about_section_4 {
  background: url(../images/aboutus/bg_3.png) center no-repeat;
  background-size: cover;
}

.about_section_4 .slider_out {
  margin-top: 30px;
}

.about_section_4 .hisotry__con {
  min-height: 450px;
  padding-right: 5%;
  position: relative;
  z-index: 1;
  background: url(../images/aboutus/slider_bg.png) 10px bottom no-repeat;
  background-size: 100% auto;
}

.about_section_4 .hisotry__con:hover {
  background: url(../images/aboutus/slider_hover.png) 10px bottom no-repeat;
  background-size: 100% auto;
}

.about_section_4 .hisotry__con::after {
  width: 1px;
  background-color: #00778B;
  height: 220px;
  left: 1px;
  bottom: 1px;
  content: "";
  position: absolute;
}

.about_section_4 .hisotry__con h3 {
  font-size: 24px;
  font-size: 2.4rem;
  font-weight: 700;
  padding-bottom: 15px;
  color: #00778B;
}

.about_section_4 .hisotry__con p {
  font-size: 18px;
  font-size: 1.8rem;
}

.about_section_5 .img_txt_con {
  margin-top: 30px;
  /*position: relative;
  z-index: 1;*/
  margin-bottom: 120px;
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
}

.about_section_5 .img_txt_con.s_2 {
  margin-bottom: 0;
}

.about_section_5 .img_txt_con.s_2 .img_con {
  /*position: absolute;
  right: 0;
  top: 0px;*/
  order: 2;
}

.about_section_5 .img_txt_con.s_2 .txt_con {
  position: relative;
  left: 0;
  padding-left: 13%;
}

.about_section_5 .img_txt_con .img_con {
  z-index: 10;
  /*position: relative;*/
  width: 50%;
}

.about_section_5 .img_txt_con .img_con img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about_section_5 .img_txt_con .txt_con {
  width: 50%;
  background-color: #f8fbfc;
  padding: 50px 40px 40px 8%;
/*  position: absolute;
  right: 0;
  top: 80px;
  z-index: 5;*/
}

.about_section_5 .img_txt_con .txt_con h3 {
  font-size: 18px;
  font-size: 1.8rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  padding-bottom: 20px;
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.7;
}

.about_section_5 .img_txt_con .txt_con h4 {
  font-size: 18px;
  font-size: 1.8rem;
  font-weight: 700;
  padding-bottom: 10px;
  line-height: 1.7;
}

.about_section_5 .img_txt_con .txt_con ul li {
  list-style: inside disc;
  padding-left: 10px;
  font-size: 16px;
  font-size: 1.6rem;
  line-height: 1.6;
}

.about_section_6 .s6_line {
  text-align: center;
  font-size: 18px;
  font-size: 1.8rem;
  padding: 10px 0 40px;
  line-height: 2;
}

.about_section_6 .zs_list {
  align-items: stretch;
}

.about_section_6 .zs_list li {
  width: calc(100% / 4 - 20px * 3 / 4);
  margin: 0 20px 20px 0;
  background: url(../images/aboutus/zs_bg.jpg) center no-repeat;
  background-size: cover;
  padding: 30px 0;
}

.about_section_6 .zs_list li:nth-child(4n) {
  margin-right: 0;
}

.about_section_6 .zs_list li img {
  display: block;
  margin: 0 auto 20px;
  height: 160px;
  max-width: 80%;
  object-fit: contain;
}

.about_section_6 .zs_list li p {
  text-align: center;
  font-size: 16px;
  font-size: 1.6rem;
  font-weight: 700;
}