@font-face {
  font-family: "Alibaba PuHuiTi";
  src: url("/fonts/alibaba-puhuiti-regular.ttf") format("truetype");
  font-display: swap;
  font-weight: 400;
}

@font-face {
  font-family: "Alibaba PuHuiTi";
  src: url("/fonts/alibaba-puhuiti-medium.otf") format("opentype");
  font-display: swap;
  font-weight: 500 700;
}

:root {
  --content-width: 1200px;
  --ink: #000;
  --body: #333;
  --muted: #bcbcbc;
  --line: #333;
  --blue: #013f84;
  --soft-gray: #f7f7f7;
  --footer: #222;
  color-scheme: light;
  font-family: "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 186px;
}

body {
  margin: 0;
  color: var(--body);
  background: #fff;
  font-size: 16px;
  overflow-x: hidden;
}

body,
button,
input {
  font-family: inherit;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  border: 0;
}

button {
  cursor: pointer;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 186px;
  background: #fff;
}

.brand-row {
  position: relative;
  height: 116px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 48px;
  height: 48px;
}

.brand-guoxing {
  width: 285px;
  height: 48px;
  object-fit: contain;
}

.brand-gocent {
  width: 153px;
  height: 48px;
  object-fit: contain;
}

.brand-divider {
  width: 1px;
  height: 32px;
  margin: 0 -1px 0 0;
  background: #d4d4d4;
}

.site-navigation {
  position: relative;
  height: 70px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  background: #fff;
}

.nav-links {
  height: 70px;
  display: flex;
  align-items: stretch;
  gap: 24px;
}

.nav-links > a {
  position: relative;
  width: 104px;
  flex: 0 0 104px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #666;
  font-size: 20px;
  line-height: 30px;
  font-weight: 400;
}

.nav-links > a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 4px;
  background: transparent;
}

.nav-links > a:hover,
.nav-links > a:focus-visible,
.nav-links > a.active {
  color: var(--blue);
}

.nav-links > a.active {
  font-weight: 600;
}

.nav-links > a.active::after {
  background: var(--blue);
}

.site-search {
  position: absolute;
  top: 18px;
  right: clamp(28px, 6.25vw, 120px);
  width: 220px;
  height: 30px;
  display: flex;
  align-items: center;
  border: 1px solid #999;
  border-radius: 15px;
  overflow: hidden;
}

.site-search input {
  width: 184px;
  height: 28px;
  padding: 0 4px 0 12px;
  color: #333;
  background: transparent;
  font-size: 14px;
  outline: none;
}

.site-search input::placeholder {
  color: #999;
}

.site-search button {
  width: 34px;
  height: 28px;
  display: grid;
  place-items: center;
  background: transparent;
}

.site-search svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: #777;
  stroke-width: 1.7;
  stroke-linecap: round;
}

.menu-toggle {
  display: none;
}

.hero {
  width: 100%;
  height: 460px;
  overflow: hidden;
}

.hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.section {
  width: 100%;
}

.section-container,
.footer-container {
  width: min(var(--content-width), calc(100% - 48px));
  height: 100%;
  margin: 0 auto;
}

.section-heading {
  text-align: center;
}

.section-heading h1,
.section-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: 48px;
  font-weight: 600;
  line-height: 67px;
}

.section-heading p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 26px;
  font-weight: 400;
  line-height: 37px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.introduction {
  height: 1034px;
  padding-top: 80px;
  background: #fff;
}

.company-copy {
  margin-top: 60px;
  color: #333;
  font-size: 16px;
  font-weight: 400;
  line-height: 40px;
}

.company-copy p {
  margin: 0;
}

.stats-grid {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.stats-grid img {
  width: 100%;
  aspect-ratio: 384 / 142;
}

.history {
  height: 810px;
  padding-top: 120px;
  background: var(--soft-gray);
}

.timeline-shell {
  position: relative;
  height: 330px;
  margin-top: 72px;
}

.timeline-viewport {
  position: relative;
  width: 100%;
  height: 330px;
}

.timeline-line {
  position: absolute;
  z-index: 0;
  top: 162px;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--line);
}

.timeline-items {
  position: absolute;
  inset: 0;
}

.timeline-item {
  position: absolute;
  z-index: 1;
  top: 153px;
  left: calc((100% - 96px) / (var(--timeline-count) - 1) * var(--timeline-index));
  width: 145px;
  min-height: 190px;
}

.timeline-marker {
  display: block;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--line);
}

.timeline-content {
  position: absolute;
  left: 0;
  width: 145px;
}

.timeline-content h3 {
  margin: 24px 0 4px;
  color: #000;
  font-size: 18px;
  font-weight: 600;
  line-height: 25px;
}

.timeline-content p {
  margin: 0;
  color: #666;
  font-size: 16px;
  line-height: 22px;
}

.timeline-accent {
  display: block;
  width: 32px;
  height: 6px;
  background: var(--line);
}

.timeline-item.below .timeline-content {
  top: 84px;
}

.timeline-item.above .timeline-content {
  top: -165px;
  display: flex;
  flex-direction: column;
}

.timeline-item.above .timeline-accent {
  order: 3;
  margin-top: 24px;
}

.timeline-item.above h3 {
  order: 1;
  margin-top: 0;
}

.timeline-item.above p {
  order: 2;
}

.timeline-control {
  position: absolute;
  z-index: 3;
  top: 144px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  padding: 0 0 3px;
  border-radius: 50%;
  color: #fff;
  background: #333;
  font-family: Arial, sans-serif;
  font-size: 32px;
  font-weight: 300;
  line-height: 1;
}

.timeline-control:hover,
.timeline-control:focus-visible {
  background: var(--blue);
  outline: none;
}

.timeline-prev {
  left: -116px;
}

.timeline-next {
  right: -116px;
}

.equipment {
  height: 1510px;
  padding-top: 120px;
  background: #fff;
}

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.equipment-grid > div,
.equipment-wide {
  overflow: hidden;
  border-radius: 8px;
}

.equipment-grid > div {
  height: 280px;
}

.equipment-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.equipment-grid > div:nth-child(1) img,
.equipment-grid > div:nth-child(2) img {
  object-position: center;
}

.equipment-grid > div:nth-child(3) img {
  object-position: right center;
}

.equipment-copy {
  margin: 24px 0 0;
  font-size: 16px;
  line-height: 40px;
}

.equipment-wide {
  width: 100%;
  height: 506px;
  margin-top: 60px;
}

.equipment-wide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 41.16%;
}

.honors {
  height: 1548px;
  padding-top: 120px;
  background: var(--soft-gray);
}

.honor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 255px;
  gap: 24px;
  margin-top: 60px;
}

.honor-grid > img {
  width: 100%;
  height: 255px;
  object-fit: cover;
}

.honor-pair {
  height: 255px;
  display: grid;
  grid-template-columns: 175px 189px;
  gap: 20px;
  align-items: start;
}

.honor-pair img:first-child {
  width: 175px;
  height: 236px;
  object-fit: cover;
}

.honor-pair img:last-child {
  width: 189px;
  height: 231px;
  object-fit: cover;
}

.qualifications {
  height: 1292px;
  padding-top: 160px;
  background: #fff;
}

.qualification-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 257px;
  column-gap: 21.562px;
  row-gap: 12px;
  margin-top: 60px;
}

.qualification-grid img {
  width: 182px;
  height: 257px;
  object-fit: contain;
}

.site-footer {
  height: 909px;
  color: #999;
  background: var(--footer);
}

.footer-container {
  position: relative;
}

.footer-top {
  height: 508px;
  padding-top: 100px;
  display: grid;
  grid-template-columns: 160px 80px repeat(6, 160px);
}

.footer-brand {
  width: 160px;
  height: 50px;
}

.footer-brand img {
  width: 160px;
  height: 50px;
  object-fit: contain;
}

.footer-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.footer-column a {
  color: #999;
  font-size: 16px;
  line-height: 22px;
}

.footer-column a:hover,
.footer-column a:focus-visible {
  color: #fff;
}

.footer-column .footer-title {
  margin-bottom: 14px;
  color: #fff;
  font-size: 20px;
  font-weight: 600;
  line-height: 28px;
}

.footer-bottom {
  position: absolute;
  top: 508px;
  left: 0;
  width: 100%;
  height: 261px;
  font-size: 16px;
  line-height: 22px;
}

.footer-company-line {
  position: absolute;
  top: 20px;
  left: 0;
  display: flex;
  gap: 60px;
}

.footer-rule {
  position: absolute;
  top: 62px;
  left: 0;
  right: 0;
  height: 1px;
  background: #444;
}

.footer-contact-line {
  position: absolute;
  top: 83px;
  left: 0;
  display: flex;
  gap: 16px;
}

.footer-contact-line a:hover,
.footer-contact-line a:focus-visible {
  color: #fff;
}

.footer-slogan,
.footer-copyright,
.footer-service {
  position: absolute;
  margin: 0;
}

.footer-slogan {
  top: 125px;
  left: 0;
}

.footer-copyright {
  top: 167px;
  left: 0;
}

.footer-service {
  top: 83px;
  right: 0;
}

.footer-qrcodes {
  position: absolute;
  top: 125px;
  right: 13px;
  display: flex;
  gap: 24px;
}

.footer-qrcodes figure {
  width: 90px;
  margin: 0;
  text-align: center;
}

.qr-box {
  position: relative;
  width: 90px;
  height: 90px;
  padding: 6px;
  background: #fff;
  overflow: hidden;
}

.qr-box img {
  position: absolute;
  max-width: none;
}

.qr-official img {
  top: -14px;
  left: -24px;
  width: 137.38px;
  height: 151px;
}

.qr-consult img {
  top: 5px;
  left: 5px;
  width: 80px;
  height: 80px;
}

.footer-qrcodes figcaption {
  margin-top: 12px;
  font-size: 16px;
  line-height: 22px;
  white-space: nowrap;
}

@media (max-width: 1580px) {
  .nav-links > a {
    width: 112px;
  }

  .site-search {
    right: 24px;
    width: 200px;
  }

  .site-search input {
    width: 164px;
  }
}

@media (max-width: 1599px) and (min-width: 1024px) {
  html {
    scroll-padding-top: 152px;
  }

  .site-header {
    height: 152px;
  }

  .brand-row {
    height: 92px;
  }

  .brand-lockup {
    transform: scale(.82);
  }

  .site-navigation,
  .nav-links {
    height: 60px;
  }

  .nav-links > a {
    width: 88px;
    min-width: 88px;
    flex: 0 0 88px;
    height: 60px;
    font-size: 17px;
    line-height: 26px;
  }

  .site-search {
    top: 15px;
    width: 190px;
    margin-top: 0;
  }
}

@media (max-width: 1260px) {
  .site-search {
    display: none;
  }

  .timeline-prev {
    left: 8px;
  }

  .timeline-next {
    right: 8px;
  }

  .timeline-viewport {
    width: calc(100% - 120px);
    margin: 0 auto;
  }
}

@media (max-width: 1023px) {
  html {
    scroll-padding-top: 72px;
  }

  :root {
    --content-width: 720px;
  }

  .site-header {
    height: 72px;
  }

  .brand-row {
    height: 72px;
    justify-content: flex-start;
    padding: 0 24px;
  }

  .brand-lockup {
    gap: 18px;
    height: 30px;
  }

  .brand-guoxing {
    width: 178px;
    height: 30px;
  }

  .brand-gocent {
    width: 96px;
    height: 30px;
  }

  .brand-divider {
    height: 24px;
  }

  .menu-toggle {
    position: absolute;
    top: 20px;
    right: 24px;
    width: 36px;
    height: 36px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0;
    background: transparent;
  }

  .menu-toggle span {
    width: 24px;
    height: 2px;
    background: #333;
    transition: transform 180ms ease, opacity 180ms ease;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-navigation {
    position: absolute;
    z-index: 20;
    top: 72px;
    left: 0;
    right: 0;
    height: auto;
    display: none;
    padding: 12px 24px 24px;
    box-shadow: 0 18px 32px rgb(0 0 0 / 12%);
  }

  .site-navigation[data-open="true"] {
    display: block;
  }

  .nav-links {
    height: auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-links > a {
    width: auto;
    min-width: 0;
    flex: 0 0 auto;
    height: 50px;
    justify-content: flex-start;
    padding: 0 12px;
    font-size: 16px;
    line-height: 24px;
  }

  .nav-links > a::after {
    left: 12px;
    right: auto;
    width: 64px;
    height: 2px;
  }

  .hero {
    height: clamp(240px, 42vw, 340px);
  }

  .introduction,
  .history,
  .equipment,
  .honors,
  .qualifications,
  .site-footer {
    height: auto;
  }

  .section-container,
  .footer-container {
    width: min(var(--content-width), calc(100% - 48px));
  }

  .introduction,
  .history,
  .equipment,
  .honors,
  .qualifications {
    padding: 84px 0;
  }

  .section-heading h1,
  .section-heading h2 {
    font-size: 38px;
    line-height: 52px;
  }

  .section-heading p {
    font-size: 20px;
    line-height: 30px;
  }

  .company-copy {
    margin-top: 42px;
    line-height: 32px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .timeline-shell {
    margin-top: 56px;
  }

  .equipment-grid {
    margin-top: 48px;
  }

  .equipment-grid > div {
    height: 190px;
  }

  .equipment-copy {
    line-height: 32px;
  }

  .equipment-wide {
    height: 340px;
    margin-top: 48px;
  }

  .honor-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: auto;
    margin-top: 48px;
  }

  .honor-grid > img {
    height: auto;
    aspect-ratio: 384 / 255;
    object-fit: cover;
  }

  .honor-pair {
    height: auto;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .honor-pair img:first-child,
  .honor-pair img:last-child {
    width: 100%;
    height: auto;
    object-fit: contain;
  }

  .qualification-grid {
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: auto;
    gap: 20px;
    margin-top: 48px;
  }

  .qualification-grid img {
    width: 100%;
    height: auto;
    aspect-ratio: 182 / 257;
    object-fit: contain;
  }

  .site-footer {
    padding: 72px 0 56px;
  }

  .footer-top {
    height: auto;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-spacer {
    display: none;
  }

  .footer-bottom {
    position: relative;
    top: auto;
    height: auto;
    margin-top: 72px;
    padding-top: 28px;
    border-top: 1px solid #444;
  }

  .footer-company-line,
  .footer-contact-line,
  .footer-slogan,
  .footer-copyright,
  .footer-service,
  .footer-qrcodes {
    position: static;
  }

  .footer-company-line,
  .footer-contact-line {
    flex-wrap: wrap;
    gap: 12px 28px;
    margin-bottom: 18px;
  }

  .footer-rule {
    display: none;
  }

  .footer-slogan,
  .footer-copyright,
  .footer-service {
    margin: 0 0 18px;
  }

  .footer-qrcodes {
    justify-content: flex-start;
    margin-top: 28px;
  }
}

@media (max-width: 767px) {
  :root {
    --content-width: 100%;
  }

  .site-header {
    height: 72px;
  }

  .brand-row {
    height: 72px;
    padding: 0 18px;
  }

  .brand-lockup {
    gap: 10px;
    height: 24px;
  }

  .brand-guoxing {
    width: 143px;
    height: 24px;
  }

  .brand-gocent {
    width: 77px;
    height: 24px;
  }

  .brand-divider {
    height: 20px;
  }

  .menu-toggle {
    top: 16px;
    right: 14px;
  }

  .site-navigation {
    top: 72px;
    padding: 8px 18px 20px;
  }

  .hero {
    height: 230px;
  }

  .hero img {
    object-position: 51% center;
  }

  .section-container,
  .footer-container {
    width: calc(100% - 40px);
  }

  .introduction,
  .history,
  .equipment,
  .honors,
  .qualifications {
    padding: 64px 0;
  }

  .section-heading h1,
  .section-heading h2 {
    font-size: 30px;
    line-height: 42px;
  }

  .section-heading p {
    margin-top: 8px;
    font-size: 15px;
    line-height: 24px;
    letter-spacing: 1px;
  }

  .company-copy {
    margin-top: 34px;
    font-size: 15px;
    line-height: 28px;
    text-align: justify;
  }

  .company-copy p + p {
    margin-top: 12px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 30px;
  }

  .timeline-shell {
    height: 316px;
    margin-top: 42px;
  }

  .timeline-viewport {
    width: calc(100% - 72px);
    height: 316px;
  }

  .timeline-line {
    top: 150px;
    height: 4px;
  }

  .timeline-item {
    top: 141px;
    left: calc((100% - 24px) / (var(--timeline-count) - 1) * var(--timeline-index));
    width: 24px;
  }

  .timeline-marker {
    width: 22px;
    height: 22px;
  }

  .timeline-content {
    width: 100px;
  }

  .timeline-item:last-child .timeline-content {
    left: -76px;
  }

  .timeline-content h3 {
    margin-top: 18px;
    font-size: 15px;
    line-height: 22px;
  }

  .timeline-content p {
    font-size: 12px;
    line-height: 18px;
  }

  .timeline-accent {
    width: 24px;
    height: 4px;
  }

  .timeline-item.below .timeline-content {
    top: 68px;
  }

  .timeline-item.above .timeline-content {
    top: -128px;
  }

  .timeline-item.above .timeline-accent {
    margin-top: 18px;
  }

  .timeline-control {
    top: 133px;
    width: 32px;
    height: 32px;
    font-size: 28px;
  }

  .timeline-prev {
    left: 0;
  }

  .timeline-next {
    right: 0;
  }

  .equipment-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-top: 40px;
  }

  .equipment-grid > div {
    height: auto;
    aspect-ratio: 384 / 280;
    border-radius: 4px;
  }

  .equipment-copy {
    margin-top: 20px;
    font-size: 14px;
    line-height: 26px;
    text-align: justify;
  }

  .equipment-wide {
    height: auto;
    aspect-ratio: 1200 / 506;
    margin-top: 36px;
    border-radius: 4px;
  }

  .honor-grid {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 40px;
  }

  .honor-pair {
    gap: 14px;
    align-items: start;
  }

  .qualification-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 40px;
  }

  .site-footer {
    padding: 56px 0 44px;
  }

  .footer-top {
    grid-template-columns: repeat(2, 1fr);
    gap: 38px 20px;
  }

  .footer-column {
    gap: 10px;
  }

  .footer-column a {
    font-size: 13px;
    line-height: 20px;
  }

  .footer-column .footer-title {
    margin-bottom: 8px;
    font-size: 16px;
    line-height: 24px;
  }

  .footer-bottom {
    margin-top: 54px;
    font-size: 13px;
    line-height: 21px;
  }

  .footer-company-line,
  .footer-contact-line {
    display: block;
  }

  .footer-company-line span,
  .footer-contact-line span {
    display: block;
    margin-bottom: 8px;
  }

  .footer-qrcodes {
    gap: 18px;
  }

  .footer-qrcodes figure,
  .footer-qrcodes .qr-box {
    width: 82px;
  }

  .footer-qrcodes .qr-box {
    height: 82px;
  }

  .footer-qrcodes .qr-official img {
    top: -18px;
    left: -28px;
  }

  .footer-qrcodes .qr-consult img {
    top: 1px;
    left: 1px;
  }

  .footer-qrcodes figcaption {
    font-size: 13px;
  }
}

@media (max-width: 374px) {
  .brand-guoxing {
    width: 125px;
  }

  .brand-gocent {
    width: 68px;
  }

  .qualification-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}