@charset "UTF-8";
html, body {
  font-size: 16px;
}

@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;
  }
}

/* 元素重置样式 */
body {
  -webkit-tap-highlight-color: transparent;
  background-color: #FFF;
}

div {
  box-sizing: border-box;
}

html,
body,
h1,
h2,
h3,
h4,
h5,
h6,
div,
dl,
dt,
dd,
ul,
ol,
li,
p,
a,
span,
i,
em,
blockquote,
pre,
hr,
figure,
table,
caption,
th,
td,
form,
fieldset,
legend,
input,
button,
textarea,
menu {
  margin: 0;
  padding: 0;
}

header,
footer,
section,
article,
aside,
nav,
hgroup,
address,
figure,
figcaption,
menu,
details {
  display: block;
  margin: 0;
  padding: 0;
}

html,
body,
header,
footer {
  width: 100%;
  /*max-width: 1440px;*/
  margin: 0 auto;
  position: relative;
}
/* 89.63% 内容容器 → 等效最多 1291px
  以下选择器覆盖 index.css 中所有 width: 89.63% 的容器 */

main .public_tit .tit_inner,
main .nav_key_word section,
main .problem .problem_list,
main .finally .finally_loop,
main .finally .notice,
main .precision .precision_list,
main .cont_up ul,
main .quality .qua_box,
main .price .price_list,
main .product_case .product_boxs,
main .product_case ul,
main .jing_mi .price_list,
main .top_five ul,
main .news .precision_list,
main .news ul
{
  max-width: 1291px;
  margin-left: auto;
  margin-right: auto;
}

/* header 顶部区域 87.39% → 等效最多 1258px */
header .head_box {
  max-width: 1258px;
  margin-left: auto;
  margin-right: auto;
}

/* 导航菜单 88% → 等效最多 1267px */
header .head_nav ul {
  max-width: 1267px;
  margin-left: auto;
  margin-right: auto;
}

/* 77% 内容容器 → 等效最多 1109px */
main .problem .problem_list ul li a span {
  max-width: 1109px;
}

/* 94% 内容容器 → 等效最多 1354px */
main .finally .finally_loop .Swiper1 .swiper-wrapper .swiper-slide .finally_inner .gdt {
  max-width: 1354px;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}

caption,
th {
  text-align: left;
  font-weight: normal;
}

html,
body,
fieldset,
img,
iframe,
abbr {
  border: 0;
}

i,
cite,
em,
var,
address,
dfn {
  font-style: normal;
}

[hidefocus],
summary {
  outline: 0;
}

sup,
sub {
  font-size: 83%;
}

li {
  list-style: none;
}

textarea {
  overflow: auto;
  resize: none;
}

label,
summary {
  cursor: default;
}

a,
button {
  cursor: pointer;
}

pre,
code,
kbd,
samp {
  font-family: inherit;
}

q:before,
q:after {
  content: none;
}

em,
strong,
b {
  font-weight: bold;
}

del,
ins,
u,
s,
a {
  text-decoration: none;
}

body,
textarea,
input,
button,
select,
keygen,
legend {
  outline: 0;
  font-style: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

select, option {
  outline: 0;
  border: 0;
}

label, select, option, input[type=text], input[type=submit] {
  cursor: pointer;
}

p,
a {
  color: inherit;
}

img {
  max-width: 100%;
}

html {
  font-family: "Microsoft YaHei","SimSun","SimHei";
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

/* 公共样式 */
/* /文字排版、颜色/ */
header {
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 999;
  font-size: 1rem;
  display: flex;
  align-items: center;
  flex-direction: column;
  background-color: #ffffff;
  margin: 0;
  padding: 0;
}

header .head_box {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  width: 87.39%;
  height: 5.9em;
}

header .head_box .head_top {
  display: flex;
  align-items: center;
}

header .head_box .head_top a {
  width: 7.85em;
  height: 2.65em;
  display: inline-block;
  padding-right: .925em;
  border-right: 1px solid #dddddd;
  background-image: url(../images/jhc_logo_img01.png);
  background-size: 88.21%;
  background-position: left;
  background-repeat: no-repeat;
  margin-right: .82em;
}

header .head_box .head_top div {
  display: flex;
  flex-direction: column;
  width: 30em;
}

header .head_box .head_top div img {
  width: 100%;
}

header .head_box .head_top div span {
  font-size: 1.3em;
  font-family: Source Han Sans SC, Source Han Sans SC-Bold;
  font-weight: 700;
  text-align: left;
  color: #030303;
}

header .head_box .head_top div span i {
  color: #365BC9;
}

header .head_box .head_top div p {
  font-size: .9em;
  font-family: Source Han Sans SC, Source Han Sans SC-Regular;
  font-weight: 400;
  text-align: left;
  color: #303030;
}

header .head_box .head_right {
  display: flex;
  align-items: center;
  margin-right: 0.3em;
}

/* 第 69 轮：选择器收紧为直接子元素。
   原写法是后代选择器，把号码包成 <a href="tel:"> 之后，电话号码本身也吃到了
   这条规则，变成一张电话图标背景，把数字盖住。图标 a 是 .head_right 的直接子元素，
   改 > 即可精确命中。 */
header .head_box .head_right > a {
  width: 2.25em;
  height: 2.4em;
  display: inline-block;
  background-image: url(../images/phone_img02.png);
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
  /* 图标已移到号码右侧，间距改到左侧 */
  margin-left: 1.06em;
  margin-right: 0;
  flex: 0 0 auto;
}

header .head_box .head_right div {
  display: flex;
  flex-direction: column;
}

header .head_box .head_right div span {
  opacity: 0.78;
  font-size: 1em;
  font-family: Source Han Sans SC, Source Han Sans SC-Regular;
  font-weight: 400;
  text-align: left;
  color: #000000;
}

header .head_box .head_right div p {
  font-size: 1.8em;
  font-family: Source Han Sans CN, Source Han Sans CN-Bold;
  font-weight: 700;
  text-align: left;
  color: #2c9b50;
}

/* 页头微信二维码 */
header .head_box .head_right .head_qr {
  position: relative;
  flex: 0 0 auto;
  margin-left: clamp(14px, 1.2vw, 22px);
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  pointer-events: auto;
}

header .head_box .head_right .head_qr > img:first-of-type {
  display: block;
  width: clamp(40px, 3.1vw, 58px);
  height: clamp(40px, 3.1vw, 58px);
  padding: 2px;
  box-sizing: content-box;
  background: #ffffff;
  border: 1px solid #e2e6ef;
  border-radius: 4px;
  box-shadow: 0 2px 7px rgba(20, 40, 90, 0.1);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

header .head_box .head_right .head_qr:hover > img:first-of-type {
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 5px 15px rgba(20, 40, 90, 0.22);
}

header .head_box .head_right .head_qr > span {
  margin-top: 2px;
  font-size: clamp(9px, 0.62vw, 11px);
  font-family: Source Han Sans SC, Source Han Sans SC-Regular;
  font-weight: 400;
  line-height: 1;
  color: #5a6472;
  white-space: nowrap;
}

/* 悬停弹出大图 */
header .head_box .head_right .head_qr_pop {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  flex: 0 0 auto;
  width: clamp(120px, 9vw, 156px);
  box-sizing: border-box;
  transform: scale(0.94);
  transform-origin: right top;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  background: #ffffff;
  border-radius: 5px;
  box-shadow: 0 6px 22px rgba(15, 30, 70, 0.22);
  padding: 7px;
  z-index: 120;
  pointer-events: none;
}

header .head_box .head_right .head_qr:hover .head_qr_pop {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

header .head_box .head_right .head_qr_pop img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
}

header .head_box .head_right .head_qr_pop::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 100%;
  margin-left: -0.36em;
  border: 0.36em solid transparent;
  border-bottom-color: #ffffff;
}

header .head_box .heand_switch {
  display: none;
}

header .head_nav {
  width: 100%;
  height: 5em;
  background: #365bc9;
  display: flex;
  align-items: center;
  justify-content: center;
}

header .head_nav ul {
  width: 88%;
  height: 100%;
  display: flex;
  align-items: center;
  background: #365bc9;
}

header .head_nav ul li {
  width: 11.09%;
  height: 100%;
  padding: 0;
  text-align: center;
}

header .head_nav ul li a {
  display: inline-block;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #ffffff;
}

header .head_nav ul li:hover {
  background: #35b90e;
}

header .head_nav ul li.active {
  background: #35b90e;
}

footer {
  width: 100%;
  height: auto;
  position: relative;
  top: 0;
  font-size: 1rem;
}

footer .submissions {
  width: 100%;
  background-image: url(../images/foot_img01.png);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 4.59em 0 4.2em 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

footer .submissions .notice {
  width: 89.63%;
  display: flex;
  align-items: flex-start;
  margin-bottom: 3.04em;
}

footer .submissions .notice div {
  width: 1.5em;
  height: 1.5em;
  background-image: url(../images/laba_img01.png);
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
  margin-left: 3.37%;
  margin-right: 1%;
}

footer .submissions .notice p {
  font-size: 1em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #ffffff;
}

footer .submissions .contact {
  width: 89.63%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

footer .submissions .contact .left {
  width: 43.69%;
}

footer .submissions .contact .left i {
  font-size: 1.3em;
  font-family: Source Han Sans SC, Source Han Sans SC-Regular;
  font-weight: 400;
  text-align: left;
  color: #ffffff;
  margin-bottom: .5em;
  display: inline-block;
}

footer .submissions .contact .left p {
  font-size: 2.3em;
  font-family: Source Han Sans CN, Source Han Sans CN-Bold;
  font-weight: 700;
  text-align: left;
  color: #ffffff;
  margin-bottom: .4rem;
}

footer .submissions .contact .left span {
  font-size: 1em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #ffffff;
  display: block;
  margin-bottom: 2.15em;
  line-height: 1.6em;
}

footer .submissions .contact .left .info {
  display: flex;
  align-items: center;
}

footer .submissions .contact .left .info .info_btn {
  width: 12.95rem;
  height: 3.6rem;
  background: #ffffff;
  border-radius: .65em;
  font-size: 1.3em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #38be86;
  line-height: 1.6em;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1.45em;
}

footer .submissions .contact .left .info .info_btn div {
  width: 1.55em;
  height: 1.55em;
  margin-right: .85em;
  background-image: url(../images/kefu_img01.png);
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
}

footer .submissions .contact .left .info .info_phpne {
  display: flex;
  align-items: center;
}

footer .submissions .contact .left .info .info_phpne .info_left {
  width: 3.05em;
  height: 3.05em;
  border-radius: 50%;
  background-image: url(../images/phone_img01.png);
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
  margin-right: 1.1em;
}

footer .submissions .contact .left .info .info_phpne .info_right {
  display: flex;
  flex-direction: column;
}

footer .submissions .contact .left .info .info_phpne .info_right div {
  font-family: Source Han Sans SC, Source Han Sans SC-Medium;
  font-weight: 500;
  text-align: left;
  color: #ffffff;
  line-height: 1em;
}

footer .submissions .contact .left .info .info_phpne .info_right div:first-child {
  font-size: .8em;
  margin-bottom: .7em;
}

footer .submissions .contact .left .info .info_phpne .info_right div:last-child {
  font-size: 1.5em;
}

footer .submissions .contact .right {
  width: 40.55%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

footer .submissions .contact .right div {
  width: 48.85%;
  height: 3.5em;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.55);
  margin-bottom: 1.05em;
}

footer .submissions .contact .right div:nth-child(3) {
  width: 100%;
  height: 7.35em;
}

footer .submissions .contact .right div:nth-child(3) textarea {
  width: 93.98%;
  height: 85%;
  outline: none;
  background-color: transparent;
  border: 0px;
  font-size: 1em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #ffffff;
  padding: 0;
}

footer .submissions .contact .right div:nth-child(3) textarea:-ms-input-placeholder {
  color: #ffffff;
}

footer .submissions .contact .right div:nth-child(3) textarea:-moz-placeholder {
  color: #ffffff;
}

footer .submissions .contact .right div:nth-child(3) textarea::-moz-placeholder {
  color: #ffffff;
}

footer .submissions .contact .right div:nth-child(3) textarea::-webkit-input-placeholder {
  color: #ffffff;
}

footer .submissions .contact .right div:nth-child(4) {
  width: 100%;
  font-size: 1.3em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #365bc9;
  background: #ffffff;
}

footer .submissions .contact .right div input {
  width: 87.68%;
  list-style: none;
  font-size: 1em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #ffffff;
  line-height: 1.6em;
  outline: none;
  background-color: transparent;
  border: 0px;
}

footer .submissions .contact .right div input:-ms-input-placeholder {
  color: #ffffff;
}

footer .submissions .contact .right div input:-moz-placeholder {
  color: #ffffff;
}

footer .submissions .contact .right div input::-moz-placeholder {
  color: #ffffff;
}

footer .submissions .contact .right div input::-webkit-input-placeholder {
  color: #ffffff;
}

footer .footer_box {
  width: 100%;
  background: linear-gradient(180deg, #0b1f47 0%, #081733 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  padding-top: 2.95em;
  margin-top: -1px;
}

footer .footer_box .foot_title {
  width: 66.63%;
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid #313131;
  padding-bottom: 1.22em;
  margin-bottom: 1.77em;
}

/* 英文名 DAKALAN 已删除，「大卡蓝」提为主标题 */
footer .footer_box .foot_title p {
  font-size: 1.3em;
  font-family: Source Han Sans CN, Source Han Sans CN-Bold;
  font-weight: 700;
  text-align: left;
  color: #ffffff;
  line-height: 1.5em;
  margin-bottom: 0;
}

footer .footer_box .drop_down {
  position: absolute;
  right: 9%;
  top: 4.82em;
  display: flex;
  align-items: flex-start;
}

footer .footer_box .drop_down .drop_list {
  margin-left: 6.5em;
}

footer .footer_box .drop_down .drop_list div {
  margin-bottom: 3.02em;
}

footer .footer_box .drop_down .drop_list div a {
  font-size: 1em;
  font-family: Source Han Sans CN, Source Han Sans CN-Bold;
  font-weight: 700;
  text-align: left;
  color: #ffffff;
  line-height: 1.5em;
}

footer .footer_box .drop_down .drop_list ul li {
  margin-bottom: 1.2em;
}

footer .footer_box .drop_down .drop_list ul li:hover a {
  color: #ffffff;
}

footer .footer_box .drop_down .drop_list ul li a {
  font-size: 1em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #828282;
  line-height: 1.5em;
}

footer .footer_box .address {
  width: 66.63%;
  display: flex;
  flex-direction: column;
  margin-bottom: 4.12em;
}

footer .footer_box .address .addre_txt {
  display: flex;
  align-items: center;
  margin-bottom: 1.87em;
}

footer .footer_box .address .addre_txt .erwm_item {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-right: 1.17em;
}
footer .footer_box .address .addre_txt .erwm_item p {
  font-size: 0.75em;
  color: #fff;
  margin-top: 0.4em;
  text-align: center;
  white-space: nowrap;
}

footer .footer_box .address .addre_txt .erwm {
  width: 5em;
  height: 5em;
  background-image: url(../images/wxqr_2026.png);
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
  /* 第 52 轮：原来二维码直接贴在深蓝底上，图片自身白边只有 2~3px，等于没有白边。
     现在图片内部已补 9% 白边静区，这里再套一层白底卡片，与页头二维码风格统一。 */
  padding: 4px;
  box-sizing: content-box;
  background-color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
}


footer .footer_box .address .addre_txt .addre_phone {
  display: flex;
  flex-direction: column;
}

footer .footer_box .address .addre_txt .addre_phone p {
  font-size: .9em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #919191;
  line-height: 1.5em;
  margin-bottom: .65em;
}

footer .footer_box .address .addre_txt .addre_phone i {
  font-size: 1.4em;
  font-family: Source Han Sans CN, Source Han Sans CN-Bold;
  font-weight: 700;
  text-align: left;
  color: #ffffff;
  line-height: 1.5em;
}

footer .footer_box .address span {
  font-size: 1em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #828282;
  line-height: 1.5em;
  margin-bottom: 1.05em;
}

footer .footer_box .address span:last-child {
  margin-bottom: 0;
}

footer .footer_box .tishi {
  width: 66.63%;
  font-size: .9em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  color: #b7b7b7;
  line-height: 1.6em;
  margin-bottom: 1.2em;
}

footer .footer_box .technology {
  width: 100%;
  height: 3.5em;
  background: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
}

footer .footer_box .technology ul {
  width: 72.63%;
  height: auto;
  display: flex;
  align-items: center;
}

footer .footer_box .technology ul li {
  display: flex;
  align-items: center;
  font-size: .9em;
  font-family: Source Han Sans CN, Source Han Sans CN-Normal;
  font-weight: normal;
  text-align: left;
  /* 第 72 轮：原 #535353 在纯黑底上对比度仅约 3:1，备案号属于必须可读的
     合规信息，提亮到 #8a8a8a（约 6:1，达 WCAG AA）。 */
  color: #8a8a8a;
  line-height: 1.5em;
  margin-right: 1em;
}

footer .footer_box .technology ul li:first-child {
  margin-left: 4.12em;
}

.foter_nav {
  display: none;
}

.side_nav {
  position: fixed;
  right: 0;
  top: 50%;
  z-index: 999;
  font-size: .9em;
}

.side_nav ul {
  width: 3.27em;
}

.side_nav ul li {
  position: relative;
  background: #293d8f;
  border-radius: .55em 0px 0px .55em;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.33em 0;
  margin-top: .5em;
}

.side_nav ul li:hover {
  cursor: pointer;
}

.side_nav ul li:hover .side_block {
  transform: translateX(0);
}

.side_nav ul li:nth-child(1) .side_list i {
  background-image: url(../images/nav_btn05.png);
}

.side_nav ul li:nth-child(2) {
  background: #4f98f9;
}

.side_nav ul li:nth-child(2) .side_list i {
  background-image: url(../images/kefu_img02.png);
  background-size: contain;
}

.side_nav ul li:nth-child(3) .side_list i {
  width: 12px;
  height: 9px;
  background-image: url(../images/to_top.png);
}

.side_nav ul li .side_list {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.side_nav ul li .side_list i {
  width: 2em;
  height: 2em;
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
  display: inline-block;
  margin-bottom: .5em;
}

.side_nav ul li .side_list span {
  font-size: 1em;
  font-family: Source Han Sans SC, Source Han Sans SC-Normal;
  font-weight: normal;
  text-align: center;
  color: #ffffff;
  line-height: 1.11em;
  letter-spacing: 1.8px;
}

.side_nav ul li .side_block {
  position: absolute;
  top: 0;
  right: 4.55em;
  background: #ffffff;
  box-shadow: 0px 3px 6px 0px rgba(0, 0, 0, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 14.5em;
  height: 100%;
  transform: translateX(200%);
  transition-duration: 1s;
  z-index: -1;
}

.side_nav ul li .side_block img {
  width: 5.5em;
  height: 5.5em;
  display: inline-block;
  margin-right: .6em;
}

.side_nav ul li .side_block .side_inns span {
  font-size: 1em;
  font-family: Source Han Sans SC, Source Han Sans SC-Medium;
  font-weight: 500;
  text-align: center;
  color: #385dbe;
  line-height: 1.11em;
  margin-right: .42em;
}

.side_nav ul li .side_block .side_inns .gdt {
  width: 100%;
  height: .15em;
  background-color: rgba(0, 0, 0, 0.22);
  position: relative;
  margin: 3.5px 0 9.5px 0;
}

.side_nav ul li .side_block .side_inns .gdt::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  margin: auto;
  width: 25%;
  height: 4px;
  background-color: #385dbe;
}

.side_nav ul li .side_block .side_inns p {
  font-size: .88em;
  font-family: Source Han Sans SC, Source Han Sans SC-Medium;
  font-weight: 500;
  text-align: center;
  color: #d3d3d3;
  line-height: 1.11em;
  padding: 0;
  position: relative;
  margin-bottom: .44em;
}

.side_nav ul li .side_block .side_inns p::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  margin: auto;
  width: .94em;
  height: .94em;
  background-image: url(../images/phone_img04.png);
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
}
/* ===== 右侧悬浮栏优化（原设计 35px 宽放 4 个汉字会挤成乱码） ===== */
.side_nav ul {
  width: 3.6em;
}
.side_nav ul li .side_list span {
  font-size: .92em;
  letter-spacing: 0;
  line-height: 1.45;
  width: 1em;
  word-break: break-all;
  white-space: normal;
  writing-mode: vertical-rl;
  text-orientation: upright;
  text-align: center;
}
.side_nav ul li:nth-child(3) .side_list span {
  writing-mode: horizontal-tb;
  width: auto;
  font-size: .78em;
  letter-spacing: .5px;
}
.side_nav ul li .side_list i {
  margin-bottom: .55em;
}

/* 页头高度有限时隐藏二维码下方小字，保证二维码不被压扁 */
@media screen and (min-width: 1201px) and (max-width: 1440px) {
  header .head_box .head_right .head_qr > span {
    display: none;
  }
}

/* ===== 无障碍视觉隐藏（供 H1 等语义标题使用）=====
   内容真实存在于 DOM，仅视觉上不显示；屏幕阅读器与爬虫可正常读取。
   第 68 轮（GEO 改造）新增：产品中心等页面视觉上没有标题文字，需要给机器一个 H1。 */
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ===== 联系方式可点击（第 69 轮）=====
   原站电话与邮箱是纯文本 / javascript:; 死链，手机上点不动。
   统一包成 tel: / mailto: 后需要继承父级排版，避免变成蓝色带下划线的默认链接样式。 */
a.tel_link,
a.tel_link:visited,
a.tel_link:active {
  color: inherit;
  text-decoration: none;
}
a.tel_link:hover {
  color: #0f6fd8;
}