* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  background: #fff;
  overflow-y: scroll;
  scrollbar-gutter: stable;
}
body {
  font: 16px/1.65 "Roboto Slab", Georgia, serif;
  color: #252525;
  background: #fff;
  --font-accent-serif: "Roboto Slab", Georgia, serif;
  --accent-serif-color: #9b6a4d;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* 去除列表默认样式 */
  /* 去除默认的倾斜效果 */
  /* 去除超链接默认的样式 */
  /* 设置img的垂直对齐方式为居中对齐，去除img默认下间隙 */
  /* 去除input默认样式 */
}
body ul,
body ol {
  list-style: none;
}
body em,
body i {
  font-style: normal;
}
body a {
  text-decoration: none;
  color: #252525;
}
body img {
  width: 100%;
  height: 100%;
  vertical-align: middle;
}
body input {
  border: none;
  outline: none;
  color: #333;
}
body h1,
body h2,
body h3,
body h4,
body h5,
body h6 {
  font-family: var(--font-accent-serif);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
}
.reveal-up {
  opacity: 0;
  transform: translate3d(0, 24px, 0);
  animation: none;
  will-change: opacity, transform;
}
.reveal-up.is-visible {
  animation: fadeUp 0.75s ease both;
}
.delay-1 {
  animation-delay: 0.08s;
}
.delay-2 {
  animation-delay: 0.16s;
}
.delay-3 {
  animation-delay: 0.24s;
}
.delay-4 {
  animation-delay: 0.32s;
}
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translate3d(0, 24px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}
.wrapper {
  width: calc(100% - 32px);
  max-width: 1240px;
  margin: 0 auto;
}
.content {
  margin-top: 250px;
  height: 2000px;
  display: flex;
}
.top-banner {
  top: 0;
  position: fixed;
  height: 27px;
  width: 100%;
  background-color: #ea8b2e;
  z-index: 999;
}
.shortcut {
  position: fixed;
  width: 100%;
  height: 48px;
  background-color: white;
  top: 27px;
  z-index: 999;
  border-bottom: solid 1px #e9d5d5;
}
.shortcut .short-flex {
  display: flex;
  position: relative;
}
.shortcut .short-flex a {
  line-height: 48px;
}
.shortcut .short-flex a:hover {
  color: orange;
}
.shortcut .short-flex div:nth-child(2) {
  flex: 1;
  position: absolute;
  right: 0;
}
.shortcut .short-flex div:nth-child(2) a {
  margin-left: 10px;
}
.shortcut .short-flex div:nth-child(2) :nth-child(1) {
  font-size: 20px;
  color: #ec3a38;
}
.shortcut .short-flex div:nth-child(2) :nth-child(2) {
  font-size: 20px;
  background-image: linear-gradient(to top right, #5b3d98, #9a3c98, #c3294f, #cb683c, #cea736);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.shortcut .short-flex div:nth-child(2) :nth-child(3) {
  font-size: 20px;
  color: #1da1f3;
}
.shortcut .short-flex div:nth-child(2) :nth-child(4) {
  font-size: 20px;
  color: #26d366;
}
.shortcut .short-flex div:nth-child(2) :nth-child(5) {
  font-size: 20px;
  background-image: linear-gradient(to top, #ff9900 0%, #ff9900 30%, black 31%, black 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.shortcut .short-flex div:nth-child(2) :nth-child(6) {
  font-size: 20px;
  color: #3b5998;
}
.shortcut .short-flex div:nth-child(2) :nth-child(7) {
  font-size: 20px;
  color: #007fb1;
}
.shortcut .short-flex div:nth-child(2) :nth-child(8) {
  font-size: 20px;
  color: #cc2127;
}
.header-box {
  position: fixed;
  top: 75px;
  width: 100%;
  background-color: white;
  z-index: 999;
}
.header-box .header {
  position: relative;
  display: flex;
  height: 88px;
  top: 0;
}
.header-box .header .logo {
  width: 250px;
  height: 88px;
}
.header-box .header .logo a {
  display: block;
  width: 250px;
  height: 88px;
  background-image: url(../img/logo.png);
  background-repeat: no-repeat;
  font-size: 0;
}
.header-box .header .nav {
  position: absolute;
  right: 0;
  width: 640px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0;
}
.header-box .header .nav ul {
  width: 640px;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 40px;
}
.header-box .header .nav ul li {
  margin-left: 0;
}
.header-box .header .nav ul li a:hover,
.header-box .header .nav ul li a.active {
  color: orange;
}
.header-box .header .nav ul li a {
  position: relative;
  display: inline-block;
  padding-bottom: 8px;
  color: #1d1d1f;
}
.header-box .header .nav ul li a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: orange;
  transition: width 0.25s ease;
}
.header-box .header .nav ul li a:hover::after,
.header-box .header .nav ul li a.active::after {
  width: 100%;
}
.bgd {
  position: fixed;
  top: 0;
  width: 100%;
  height: 1080px;
  background-color: #f7f3ec;
  background-repeat: repeat;
  background-size: 480px auto;
  opacity: 0.28;
  pointer-events: none;
  background-image: url(../img/bgi2.png);
  z-index: 0;
}
.bgd-solve {
  position: relative;
  z-index: 1;
}
.footer {
  margin-top: 100px;
  height: 520px;
  background-color: #231816;
  width: 100%;
}
.footer .subscribe {
  color: white;
  display: flex;
  height: 170px;
  justify-content: space-between;
  align-items: center;
}
.footer .subscribe div:nth-child(1) span {
  display: block;
  font-weight: 600;
}
.footer .subscribe div:nth-child(1) span:nth-child(1) {
  font-size: 32px;
  line-height: 1.15;
}
.footer .subscribe div:nth-child(1) span:nth-child(2) {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.72);
}
.footer .subscribe div:nth-child(2) {
  display: flex;
}
.footer .subscribe div:nth-child(2) input {
  width: 500px;
  height: 45px;
  font-size: 15px;
  padding-left: 20px;
}
.footer .subscribe div:nth-child(2) ::-webkit-input-placeholder {
  font-size: 15px;
}
.footer .subscribe div:nth-child(2) .subButton {
  width: 100px;
  height: 45px;
  background-color: #ea8b2e;
  cursor: pointer;
}
.footer .subscribe div:nth-child(2) .subButton span {
  display: block;
  width: 100px;
  text-align: center;
  line-height: 45px;
  font-size: 15px;
}
.footer .contact-list {
  display: flex;
  height: 350px;
}
.footer .contact-list .footer-contact {
  height: 350px;
  width: 400px;
}
.footer .contact-list .footer-contact div:nth-child(1) {
  width: 250px;
  height: 80px;
  background: url(../img/logo.png) no-repeat center center;
}
.footer .contact-list .footer-contact div:nth-child(2) {
  margin-top: 30px;
}
.footer .contact-list .footer-contact div:nth-child(2) p {
  font-weight: 500;
  margin-top: 5px;
  color: white;
}
.footer .contact-list .footer-contact div:nth-child(2) p a {
  color: #cea736;
}
.footer .contact-list .footer-nav {
  margin-top: 100px;
  flex: 1;
  margin-left: 200px;
  display: flex;
  justify-content: space-evenly;
}
.footer .contact-list .footer-nav dl {
  color: white;
}
.footer .contact-list .footer-nav dl dt {
  font-weight: 600;
}
.footer .contact-list .footer-nav dl a {
  color: white;
}
.footer .contact-list .footer-nav dl dd {
  margin-top: 10px;
}
.footer .contact-list .footer-nav dl dd:nth-child(2) {
  margin-top: 20px;
}
.copyright {
  width: 100%;
  height: 30px;
  background-color: #322220;
}
.copyright .wrapper {
  position: relative;
}
.copyright .wrapper span {
  color: white;
  position: absolute;
  right: 0;
}
.ab_box1 {
  display: flex;
  min-height: 400px;
  margin-top: 250px;
  align-items: center;
}
.ab_box1 .left {
  width: 500px;
}
.ab_box1 .left > div:nth-child(1) {
  font-weight: 600;
  font-size: 35px;
}
.ab_box1 .left > div:nth-child(2) {
  margin-top: 20px;
}
.ab_box1 .right {
  flex: 1;
  margin-left: 50px;
}
.ab_box1 .right img {
  object-fit: contain;
}
.ab_box2 {
  margin-top: 50px;
  background-color: #f8f4ee;
  padding: 0 0 40px;
  min-height: 720px;
  overflow: hidden;
}
.ab_box2 .wrapper > div:first-child {
  text-align: center;
  font-weight: 600;
  font-size: 40px;
  padding: 28px 0 24px;
  line-height: 1.15;
}
.ab_box2 .wrapper > div:nth-child(2) {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  align-items: start;
}
.ab_box2 .wrapper > div:nth-child(2) > div {
  width: 100%;
  min-height: 250px;
  padding: 0 20px 20px;
  background-color: #fff;
}
.ab_box2 .wrapper > div:nth-child(2) > div > div:nth-child(1) {
  width: 100%;
  min-height: 50px;
  padding: 14px 0 10px;
  line-height: 1.35;
  font-weight: 600;
  border-bottom: #e3e3e3 solid 2px;
}
.ab_box2 .wrapper > div:nth-child(2) > div > div:nth-child(2) {
  margin-top: 15px;
  line-height: 1.7;
}
.time_line {
  background-color: #1D1D1D;
  font-family: inherit;
  position: relative;
  height: 1950px;
  overflow: hidden;
}
.time_line:before {
  content: '';
  position: absolute;
  top: 0px;
  left: 50%;
  bottom: 0px;
  transform: translateX(-50%);
  width: 4px;
  height: 100%;
  background-color: #fff;
}
.time_line .entries {
  width: calc(100% - 80px);
  max-width: 800px;
  margin: auto;
  position: relative;
  left: -5px;
}
.time_line .entries .entry {
  width: calc(50% - 80px);
  float: left;
  padding: 20px;
  clear: both;
  text-align: right;
}
.time_line .entries .entry:not(:first-child) {
  margin-top: -60px;
}
.time_line .entries .entry .title {
  font-family: var(--font-accent-serif);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: none;
  -webkit-text-stroke: 0.2px currentColor;
  text-shadow: 0.01em 0 0 currentColor;
  margin-bottom: 12px;
  margin-top: 40px;
  position: relative;
  color: #fff;
}
.time_line .entries .entry .title:before {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border: 4px solid #ffffff;
  background-color: #1D1D1D;
  border-radius: 100%;
  top: 50%;
  transform: translateY(-50%);
  right: -73px;
  z-index: 1000;
}
.time_line .entries .entry .title.big:before {
  width: 24px;
  height: 24px;
  transform: translate(8px, -50%);
}
.time_line .entries .entry .body {
  color: #aaa;
}
.time_line .entries .entry .body p {
  line-height: 1.4em;
}
.time_line .entries .entry:nth-child(2n) {
  text-align: left;
  float: right;
}
.time_line .entries .entry:nth-child(2n) .title:before {
  left: -63px;
}
.time_line .entries .entry:nth-child(2n) .title.big:before {
  transform: translate(-8px, -50%);
}
.ab_box3 {
  height: 500px;
  margin-top: 120px;
  overflow: hidden;
}
.ab_box3 .swiper-container {
  width: 100%;
  height: 100%;
}
.ab_box3 .swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #fff;
  padding: 18px;
  /* Center slide text vertically */
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
  transition: 300ms;
  transform: scale(0.8);
}
.ab_box3 .swiper-slide img {
  width: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  cursor: pointer;
}
.ab_box3 .swiper-slide-active,
.ab_box3 .swiper-slide-duplicate-active {
  transform: scale(1);
}
.ab_cover {
  top: 0;
  left: 0;
  position: fixed;
  z-index: 999;
  width: 100%;
  height: 100%;
  display: none;
  background: rgba(0, 0, 0, 0.9);
}
.ab_cover .icon-chacha {
  color: orange;
  font-size: 40px;
  position: absolute;
  right: 50px;
  top: 20px;
  display: block;
  z-index: 999;
  cursor: pointer;
}
.ab_cover .swiper {
  width: 100%;
  height: 100%;
}
.ab_cover .swiper-slide {
  text-align: center;
  font-size: 18px;
}
.ab_cover .swiper-slide img {
  width: auto;
  height: 80%;
  object-fit: contain;
  max-width: 100%;
  max-height: 100%;
  -ms-transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  position: absolute;
  left: 50%;
  top: 50%;
}

.certificates-section {
  margin-top: 100px;
  padding-bottom: 60px;
}

.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.cert-item {
  border: 1px solid #e8e3df;
  background: #fff;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-item img {
  width: 100%;
  height: auto;
  display: block;
}