@media screen and (max-width: 1920px) {
  html, body {
    font-size: 16px;
  }
}

@media screen and (max-width: 1872px) {
  html, body {
    font-size: 15.6px;
  }
}

@media screen and (max-width: 1824px) {
  html, body {
    font-size: 15.2px;
  }
}

@media screen and (max-width: 1776px) {
  html, body {
    font-size: 14.8px;
  }
}

@media screen and (max-width: 1728px) {
  html, body {
    font-size: 14.4px;
  }
}

@media screen and (max-width: 1680px) {
  html, body {
    font-size: 14px;
  }
}

@media screen and (max-width: 1632px) {
  html, body {
    font-size: 13.6px;
  }
}

@media screen and (max-width: 1584px) {
  html, body {
    font-size: 13.2px;
  }
}

@media screen and (max-width: 1536px) {
  html, body {
    font-size: 12.8px;
  }
}

@media screen and (max-width: 1488px) {
  html, body {
    font-size: 12.4px;
  }
}

@media screen and (max-width: 1440px) {
  html, body {
    font-size: 12px;
  }
}

@media screen and (max-width: 1395px) {
  html, body {
    font-size: 11.6px;
  }
}

@media screen and (max-width: 1344px) {
  html, body {
    font-size: 11.2px;
  }
}

@media screen and (max-width: 1296px) {
  html, body {
    font-size: 10.8px;
  }
}

@media screen and (max-width: 1248px) {
  html, body {
    font-size: 10.4px;
  }
}

@media screen and (max-width: 1200px) {
  html, body {
    font-size: 10px;
  }
}

@media screen and (max-width: 1115px) {
  html, body {
    font-size: 9.6px;
  }
}

@media screen and (max-width: 1104px) {
  html, body {
    font-size: 9.2px;
  }
}

@media screen and (max-width: 1056px) {
  html, body {
    font-size: 8.8px;
  }
}

@media screen and (max-width: 1008px) {
  html, body {
    font-size: 8.4px;
  }
}

@media screen and (max-width: 960px) {
  html, body {
    font-size: 8px;
  }
}

@media screen and (max-width: 912px) {
  html, body {
    font-size: 7.6px;
  }
}

@media screen and (max-width: 864px) {
  html, body {
    font-size: 7.2px;
  }
}

@media screen and (max-width: 816px) {
  html, body {
    font-size: 6.8px;
  }
}

@media screen and (max-width: 768px) {
  html, body {
    font-size: 6.4px;
  }
}

@media screen and (max-width: 720px) {
  html, body {
    font-size: 6px;
  }
}

@media screen and (max-width: 672px) {
  html, body {
    font-size: 5.6px;
  }
}

@media screen and (max-width: 624px) {
  html, body {
    font-size: 5.2px;
  }
}

@media screen and (max-width: 576px) {
  html, body {
    font-size: 4.8px;
  }
}

@media screen and (max-width: 528px) {
  html, body {
    font-size: 4.4px;
  }
}

@media screen and (max-width: 480px) {
  html, body {
    font-size: 4px;
  }
}

@media screen and (max-width: 432px) {
  html, body {
    font-size: 3.6px;
  }
}

@media screen and (max-width: 384px) {
  html, body {
    font-size: 3.2px;
  }
}

@media screen and (max-width: 336px) {
  html, body {
    font-size: 2.8px;
  }
}

@media screen and (max-width: 288px) {
  html, body {
    font-size: 2.4px;
  }
}
  
  main .banners {
    margin-top: -1px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    /* 第 57 轮：按需求「就这一整张填充上去，不要有其他的颜色」——
       去掉由左向右的深蓝渐变，只留厂房整图，cover 铺满，无任何着色 */
    background-image: url(../images/contact_us/contact_banner_factory.jpg);
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    font-size: 1.2rem;
  }
  
  main .banners p {
    width: 89.635%;
    font-size: 2.5em;
    font-family: Source Han Sans CN, Source Han Sans CN-Bold;
    font-weight: 700;
    text-align: left;
    color: #ffffff;
    /* 第 57 轮：背景由深蓝块换成浅色厂房整图，白字要压得住浅黄墙面与天空。
       用三层深色柔光代替色块遮罩——只作用于文字边缘，不给整张图加任何颜色。 */
    text-shadow:
      0 0 2px rgba(4, 12, 30, .92),
      0 1px 5px rgba(4, 12, 30, .85),
      0 3px 14px rgba(4, 12, 30, .70),
      0 6px 26px rgba(4, 12, 30, .45);
    margin: 14.35rem 0 18.4rem 0;
  }
  
  main .address {
    font-size: 1rem;
    width: 89.33%;
    margin: 0 auto;
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    padding: 7.4em 0 11.7em 0;
    position: relative;
  }
  
  main .address #container {
    width: 79.31%;
    height: 46.9em;
  }
  
  main .address section {
    position: absolute;
    top: 0;
    left: 0;
    width: 39.62%;
    z-index: 20;
  }
  
  main .address section .addr_txt {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #4271ee;
    padding-bottom: 2.9em;
    margin-top: 14.55em;
  }
  
  main .address section .addr_txt p {
    width: 70.08%;
    font-size: 1.6em;
    font-family: Source Han Sans CN, Source Han Sans CN-Bold;
    font-weight: 700;
    text-align: left;
    color: #ffffff;
    margin-top: 3.75rem;
  }
  
  main .address section .addr_txt ul {
    width: 70.08%;
    margin-top: 1.22em;
    padding-top: 1.57em;
    border-top: 1px solid #ffffff;
    border-bottom: 1px solid #ffffff;
  }
  
  main .address section .addr_txt ul li {
    width: 100%;
    margin-bottom: 1em;
    display: flex;
    align-items: flex-start;
  }
  
  main .address section .addr_txt ul li .add_tb {
    width: 14.17%;
  }
  
  main .address section .addr_txt ul li .add_tb img {
    min-width: 53.44%;
    max-width: 64.05%;
    margin-top: .3em;
  }
  
  main .address section .addr_txt ul li .add_inn {
    width: 81.58%;
    display: flex;
    flex-direction: column;
  }
  
  main .address section .addr_txt ul li .add_inn span {
    font-size: 1em;
    font-family: Source Han Sans SC, Source Han Sans SC-Normal;
    font-weight: normal;
    text-align: left;
    color: #ffffff;
    line-height: 1.5em;
  }
  
  main .address section .addr_txt .add_btn {
    width: 70.08%;
    margin-top: 1.12em;
  }
  
  main .address section .addr_txt .add_btn a {
    width: 49.16%;
    height: 3.6em;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #38be86;
  }
  
  main .address section .addr_txt .add_btn a div {
    width: 1.8em;
    height: 2.05em;
    background-image: url(../images/tb_logo01.png);
    background-size: 100%;
    background-position: center;
    background-repeat: no-repeat;
    margin-right: 1.07em;
  }
  
  main .address section .addr_txt .add_btn a span {
    font-size: 1.3em;
    font-family: Source Han Sans CN, Source Han Sans CN-Normal;
    font-weight: normal;
    text-align: left;
    color: #ffffff;
    line-height: 1.6em;
  }

/* ===== 第 51 轮：联系页地图区由深蓝渐变占位块换成实景地图 ===== */
main .address #container {
  position: relative;
  overflow: hidden;
  border-radius: 6px;
  background: #f2f4f7;
}

main .address #container .map_img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

/* 「在高德地图中查看」按钮：浮在地图右下角，避免遮挡地址标注 */
main .address #container .map_go {
  position: absolute;
  right: 1.4em;
  bottom: 1.4em;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  padding: .62em 1.4em .62em 1.1em;
  border-radius: 2em;
  background: rgba(30, 71, 149, .92);
  box-shadow: 0 4px 14px rgba(16, 34, 60, .22);
  color: #fff;
  font-size: .9em;
  line-height: 1.4;
  text-decoration: none;
  transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
}

main .address #container .map_go:hover {
  background: rgba(23, 160, 110, .95);
  transform: translateY(-2px);
  box-shadow: 0 7px 18px rgba(16, 34, 60, .3);
}

/* 定位小图标，用 CSS 画一个水滴 + 圆点，不额外引资源 */
main .address #container .map_go .map_go_ico {
  position: relative;
  width: .95em;
  height: 1.15em;
  margin-right: .6em;
  flex: 0 0 auto;
}

main .address #container .map_go .map_go_ico::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: .95em;
  height: .95em;
  margin-left: -.475em;
  border: 2px solid #ffffff;
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  box-sizing: border-box;
}

main .address #container .map_go .map_go_ico::after {
  content: "";
  position: absolute;
  left: 50%;
  top: .3em;
  width: .3em;
  height: .3em;
  margin-left: -.15em;
  background: #ffffff;
  border-radius: 50%;
}

main .address #container .map_go .map_go_txt {
  white-space: nowrap;
}