/* About / Company profile */
.about-company {
  background: #fff;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: 52px 24px 44px;
}

.about-company-inner {
  width: calc(100% - var(--container-gutter));
  max-width: var(--container-max);
  margin-inline: auto;
}

.about-company-head {
  text-align: center;
  margin-bottom: 28px;
}

.about-company-title {
  margin: 0;
  font-size: 50px;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: #2c2f37;
}

.about-company-subtitle {
  margin: 10px 0 0;
  font-size: 17px;
  color: #6f757f;
}

.about-company-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 28px;
}

.about-company-copy p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.62;
  color: #383d46;
}

.about-company-copy p:last-child {
  margin-bottom: 0;
}

.about-company-copy strong {
  font-weight: 700;
}

.about-company-media img {
  width: 100%;
  height: 290px;
  object-fit: cover;
  display: block;
}

.about-company-stats {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.about-stat {
  min-height: 176px;
  background: #f3f3f3;
  border: 1px solid #e5e6ea;
  padding: 30px 20px 22px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about-stat .about-stat-icon-wrap {
  position: relative;
  width: 58px;
  height: 58px;
}

.about-stat .about-stat-icon {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  /* transition: opacity 0.2s ease; */
}

.about-stat .about-stat-icon--selected {
  opacity: 0;
}

.about-stat--active .about-stat-icon--default {
  opacity: 0;
}

.about-stat--active .about-stat-icon--selected {
  opacity: 1;
}

.about-stat strong {
  margin-top: 10px;
  font-size: 58px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: #13213d;
}

.about-stat span {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.45;
  color: #687180;
}

.about-stat--active {
  background: #1095ef;
  border-color: #1095ef;
}

.about-stat--active strong,
.about-stat--active span {
  color: #fff;
}

@media (max-width: 1440px) {
  .about-company {
    padding: 50px 23px 42px;
  }

  .about-company-title {
    font-size: 48px;
  }
}

@media (max-width: 1366px) {
  .about-company {
    padding: 48px 22px 40px;
  }

  .about-company-title {
    font-size: 46px;
  }
}

@media (max-width: 1280px) {
  .about-company-title {
    font-size: 44px;
  }

  .about-company-grid {
    gap: 30px;
  }

  .about-company-media img {
    height: 260px;
  }

  .about-stat {
    min-height: 164px;
    padding: 26px 16px 18px;
  }

  .about-stat strong {
    font-size: 50px;
  }
}

@media (max-width: 1024px) {
  .about-company {
    padding: 42px 22px 36px;
  }

  .about-company-title {
    font-size: 40px;
  }

  .about-company-subtitle {
    font-size: 15px;
  }

  .about-company-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 20px;
  }

  .about-company-grid--bottom .about-company-media {
    order: -1;
  }

  .about-company-media img {
    height: 280px;
  }

  .about-company-copy p {
    font-size: 15px;
    margin-bottom: 14px;
  }

  .about-company-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .about-stat {
    min-height: 150px;
    padding: 20px 14px 14px;
  }

  .about-stat strong {
    font-size: 42px;
  }

  .about-stat span {
    font-size: 13px;
  }
}

@media (max-width: 768px) {
  .about-company {
    padding: 38px 18px 34px;
  }

  .about-company-title {
    font-size: 34px;
  }

  .about-company-media img {
    height: 240px;
  }
}

@media (max-width: 480px) {
  .about-company {
    padding: 34px 16px 30px;
  }

  .about-company-title {
    font-size: 28px;
  }

  .about-company-subtitle {
    margin-top: 8px;
    font-size: 13px;
  }

  .about-company-head {
    margin-bottom: 20px;
  }

  .about-company-media img {
    height: 220px;
  }

  .about-company-copy p {
    font-size: 14px;
    line-height: 1.58;
    margin-bottom: 12px;
  }

  .about-company-stats {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 16px;
  }

  .about-stat {
    min-height: 130px;
    padding: 16px 12px;
  }

  .about-stat .about-stat-icon-wrap {
    width: 46px;
    height: 46px;
  }

  .about-stat strong {
    font-size: 34px;
  }

  .about-stat span {
    margin-top: 6px;
    font-size: 12px;
  }
}

@media (max-width: 375px) {
  .about-company {
    padding-inline: 14px;
  }

  .about-company-title {
    font-size: 24px;
  }

  .about-company-media img {
    height: 196px;
  }
}

.about-company-culture {
  background: #fff;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: 8px 24px 68px;
}

.about-company-culture-inner {
  width: calc(100% - var(--container-gutter));
  max-width: var(--container-max);
  margin-inline: auto;
}

.about-company-culture-head {
  text-align: center;
}

.about-company-culture-title {
  margin: 0;
  color: #2f333a;
  font-size: 54px;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.about-company-culture-subtitle {
  margin: 4px 0 0;
  font-size: 17px;
  color: #6f757f;
}

.about-company-culture-logos {
  margin-top: 20px;
  min-height: 130px;
  border: 1px solid #e9e9e9;
  background: #fff;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  align-items: center;
  justify-items: center;
  gap: 10px;
  padding: 0 24px;
}

.culture-logo-item {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.culture-logo-item--apollo {
  align-items: flex-start;
}

.culture-logo-item img {
  width: auto;
  max-width: 100%;
  height: 50px;
  object-fit: contain;
}

@media (max-width: 1440px) {
  .about-company-culture {
    padding-inline: 23px;
    padding-bottom: 62px;
  }

  .about-company-culture-title {
    font-size: 48px;
  }

  .culture-logo-item {
    min-height: 50px;
  }

  .culture-logo-item img {
    height: 44px;
  }
}

@media (max-width: 1366px) {
  .about-company-culture {
    padding-inline: 22px;
    padding-bottom: 58px;
  }

  .about-company-culture-title {
    font-size: 45px;
  }

  .about-company-culture-subtitle {
    font-size: 16px;
  }

  .about-company-culture-logos {
    min-height: 118px;
  }

  .culture-logo-item {
    min-height: 46px;
  }

  .culture-logo-item img {
    height: 40px;
  }
}

@media (max-width: 1280px) {
  .about-company-culture {
    padding-bottom: 52px;
  }

  .about-company-culture-title {
    font-size: 41px;
  }

  .about-company-culture-subtitle {
    font-size: 15px;
  }

  .about-company-culture-logos {
    min-height: 108px;
    padding-inline: 18px;
  }

  .culture-logo-item {
    min-height: 42px;
  }

  .culture-logo-item img {
    height: 36px;
  }
}

@media (max-width: 1024px) {
  .about-company-culture {
    padding: 6px 22px 44px;
  }

  .about-company-culture-title {
    font-size: 34px;
  }

  .about-company-culture-subtitle {
    font-size: 14px;
  }

  .about-company-culture-logos {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    min-height: 0;
    row-gap: 18px;
    padding: 18px 18px;
  }

  .culture-logo-item {
    min-height: 38px;
  }

  .culture-logo-item img {
    height: 32px;
  }
}

@media (max-width: 768px) {
  .about-company-culture {
    padding: 2px 18px 36px;
  }

  .about-company-culture-title {
    font-size: 30px;
  }

  .about-company-culture-logos {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .culture-logo-item {
    min-height: 34px;
  }

  .culture-logo-item img {
    height: 29px;
  }
}

@media (max-width: 480px) {
  .about-company-culture {
    padding: 0 16px 30px;
  }

  .about-company-culture-title {
    font-size: 24px;
  }

  .about-company-culture-subtitle {
    font-size: 12px;
  }

  .about-company-culture-logos {
    margin-top: 14px;
    grid-template-columns: 1fr;
    row-gap: 14px;
    padding: 14px 12px;
  }

  .culture-logo-item {
    min-height: 30px;
  }

  .culture-logo-item img {
    height: 24px;
  }
}

@media (max-width: 375px) {
  .about-company-culture {
    padding-inline: 14px;
    padding-bottom: 24px;
  }

  .about-company-culture-title {
    font-size: 22px;
  }
}

.about-company-culture-end {
  background: #fff;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: 22px 24px 74px;
}

.about-company-culture-end-inner {
  width: calc(100% - var(--container-gutter));
  max-width: var(--container-max);
  margin-inline: auto;
}

.about-company-culture-end-head {
  text-align: center;
}

.about-company-culture-end-title {
  margin: 0;
  font-size: 50px;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: #2f333a;
}

.about-company-culture-end-subtitle {
  margin: 6px 0 0;
  font-size: 17px;
  color: #6f757f;
}

.about-iso-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  justify-items: center;
  align-items: start;
  max-width: 740px;
  margin-inline: auto;
}

.about-iso-item {
  text-align: center;
}

.about-iso-item img {
  width: 118px;
  height: 118px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
}

.about-iso-item span {
  margin-top: 4px;
  display: block;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1a2946;
}

@media (max-width: 1440px) {
  .about-company-culture-end {
    padding: 20px 23px 68px;
  }

  .about-company-culture-end-title {
    font-size: 48px;
  }
}

@media (max-width: 1366px) {
  .about-company-culture-end {
    padding: 18px 22px 64px;
  }

  .about-company-culture-end-title {
    font-size: 46px;
  }

  .about-company-culture-end-subtitle {
    font-size: 16px;
  }
}

@media (max-width: 1280px) {
  .about-company-culture-end {
    padding-bottom: 58px;
  }

  .about-company-culture-end-title {
    font-size: 44px;
  }

  .about-company-culture-end-subtitle {
    font-size: 15px;
  }

  .about-iso-item img {
    width: 102px;
    height: 102px;
  }

  .about-iso-item span {
    font-size: 30px;
  }
}

@media (max-width: 1024px) {
  .about-company-culture-end {
    padding: 14px 22px 50px;
  }

  .about-company-culture-end-title {
    font-size: 40px;
  }

  .about-company-culture-end-subtitle {
    font-size: 14px;
  }

  .about-iso-grid {
    margin-top: 16px;
  }
}

@media (max-width: 768px) {
  .about-company-culture-end {
    padding: 10px 18px 40px;
  }

  .about-company-culture-end-title {
    font-size: 34px;
  }

  .about-iso-grid {
    gap: 14px;
  }

  .about-iso-item img {
    width: 92px;
    height: 92px;
  }

  .about-iso-item span {
    font-size: 26px;
  }
}

@media (max-width: 480px) {
  .about-company-culture-end {
    padding: 8px 16px 32px;
  }

  .about-company-culture-end-title {
    font-size: 28px;
  }

  .about-company-culture-end-subtitle {
    font-size: 12px;
  }

  .about-iso-grid {
    grid-template-columns: 1fr;
    gap: 8px;
    margin-top: 14px;
  }

  .about-iso-item img {
    width: 86px;
    height: 86px;
  }

  .about-iso-item span {
    font-size: 22px;
  }
}

@media (max-width: 375px) {
  .about-company-culture-end {
    padding-inline: 14px;
    padding-bottom: 26px;
  }

  .about-company-culture-end-title {
    font-size: 24px;
  }
}

.about-team {
  background: #fff;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: 6px 24px 44px;
}

.about-team-inner {
  width: calc(100% - var(--container-gutter));
  max-width: var(--container-max);
  margin-inline: auto;
}

.about-team-head {
  text-align: center;
}

.about-team-title {
  margin: 0;
  font-size: 50px;
  line-height: 1.08;
  color: #2f333a;
}

.about-team-visual {
  margin-top: 18px;
  position: relative;
}

.about-team-visual img {
  width: 100%;
  height: 452px;
  object-fit: cover;
  display: block;
}

.about-team-highlight {
  position: absolute;
  right: 0;
  bottom: -28px;
  width: 520px;
  max-width: 58%;
  background: #1095ef;
  color: #fff;
  padding: 38px 42px;
  font-size: 38px;
  line-height: 1.45;
}

.about-team-highlight strong {
  font-size: 55px;
  line-height: 1;
  font-weight: 800;
  margin-inline: 4px;
}

.about-why {
  position: relative;
  background: #fff;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: 86px 24px 92px;
  overflow: hidden;
}

.about-why-bg {
  position: absolute;
  inset: 0;
  background: url(".././img/about/why/bg.png") center/cover no-repeat;
}

.about-why-inner {
  position: relative;
  z-index: 1;
  width: calc(100% - var(--container-gutter));
  max-width: var(--container-max);
  margin-inline: auto;
}

.about-why-head {
  text-align: center;
}

.about-why-title {
  margin: 0;
  font-size: 58px;
  line-height: 1.05;
  color: #fff;
}

.about-why-subtitle {
  margin: 8px 0 0;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.92);
}

.about-why-cards {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.about-why-card {
  background: #fafafa;
  min-height: 382px;
  padding: 28px 22px 24px;
  display: flex;
  flex-direction: column;
}

.about-why-card .about-why-icon-wrap {
  position: relative;
  width: 64px;
  height: 64px;
}

.about-why-card .about-why-icon {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  /* transition: opacity 0.2s ease; */
}

.about-why-card .about-why-icon--selected {
  opacity: 0;
}

.about-why-card--active .about-why-icon--default {
  opacity: 0;
}

.about-why-card--active .about-why-icon--selected {
  opacity: 1;
}

.about-why-card strong {
  margin-top: 16px;
  font-size: 54px;
  line-height: 1;
  color: #1f2d49;
}

.about-why-card h3 {
  margin: 12px 0 0;
  font-size: 33px;
  line-height: 1.2;
  color: #202b40;
}

.about-why-card p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.55;
  color: #6d7380;
  flex: 1;
}

.about-why-card .learn-more {
  margin-top: 18px;
  align-self: flex-start;
  background-color: #fff;
}
.about-why-card .learn-more .learn-more-icon-wrap {
  background-color: #f7f7f7;
}

.about-why-card--active {
  background: #1095ef;
}

.about-why-card--active strong,
.about-why-card--active h3,
.about-why-card--active p {
  color: #fff;
}

.about-why-card--active .learn-more {
  background: var(--color-primary);
  color: #fff;
  border: 1px solid #fff;
}

@media (max-width: 1440px) {
  .about-team {
    padding-inline: 23px;
  }

  .about-team-title {
    font-size: 48px;
  }

  .about-why-title {
    font-size: 48px;
  }

  .about-team-visual img {
    height: 420px;
  }

  .about-team-highlight {
    width: 480px;
    padding: 30px 34px;
    font-size: 33px;
  }

  .about-team-highlight strong {
    font-size: 48px;
  }

  .about-why {
    padding-inline: 23px;
  }

  .about-why-card {
    min-height: 344px;
    padding: 24px 18px 20px;
  }

  .about-why-card strong {
    font-size: 44px;
  }

  .about-why-card h3 {
    font-size: 27px;
  }
}

@media (max-width: 1366px) {
  .about-team {
    padding-inline: 22px;
  }

  .about-team-title {
    font-size: 46px;
  }

  .about-why-title {
    font-size: 44px;
  }

  .about-team-visual img {
    height: 394px;
  }

  .about-team-highlight {
    width: 450px;
    font-size: 30px;
  }

  .about-team-highlight strong {
    font-size: 44px;
  }

  .about-why {
    padding-inline: 22px;
  }
}

@media (max-width: 1280px) {
  .about-team-title {
    font-size: 44px;
  }

  .about-why-title {
    font-size: 40px;
  }

  .about-team-visual img {
    height: 360px;
  }

  .about-team-highlight {
    width: 410px;
    padding: 24px 28px;
    font-size: 26px;
  }

  .about-team-highlight strong {
    font-size: 38px;
  }

  .about-why {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .about-why-cards {
    gap: 14px;
  }

  .about-why-card {
    min-height: 310px;
  }

  .about-why-card .about-why-icon-wrap {
    width: 56px;
    height: 56px;
  }

  .about-why-card strong {
    font-size: 38px;
  }

  .about-why-card h3 {
    font-size: 24px;
  }
}

@media (max-width: 1024px) {
  .about-team {
    padding: 4px 22px 36px;
  }

  .about-team-title {
    font-size: 40px;
  }

  .about-why-title {
    font-size: 34px;
  }

  .about-team-visual img {
    height: 332px;
  }

  .about-team-highlight {
    width: 340px;
    max-width: 72%;
    bottom: -22px;
    font-size: 22px;
    padding: 18px 22px;
  }

  .about-team-highlight strong {
    font-size: 32px;
  }

  .about-why {
    padding: 66px 22px 56px;
  }

  .about-why-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .about-team {
    padding: 2px 18px 30px;
  }

  .about-team-title {
    font-size: 34px;
  }

  .about-why-title {
    font-size: 30px;
  }

  .about-team-visual img {
    height: 280px;
  }

  .about-team-highlight {
    position: static;
    max-width: 100%;
    width: 100%;
    margin-top: 10px;
    font-size: 19px;
    padding: 14px 16px;
  }

  .about-team-highlight strong {
    font-size: 28px;
  }

  .about-why {
    padding: 54px 18px 42px;
  }

  .about-why-subtitle {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .about-team {
    padding: 0 16px 24px;
  }

  .about-team-title {
    font-size: 28px;
  }

  .about-why-title {
    font-size: 24px;
  }

  .about-team-visual img {
    height: 220px;
  }

  .about-team-highlight {
    font-size: 16px;
    line-height: 1.4;
  }

  .about-team-highlight strong {
    font-size: 24px;
  }

  .about-why {
    padding: 42px 16px 34px;
  }

  .about-why-subtitle {
    margin-top: 6px;
    font-size: 13px;
  }

  .about-why-cards {
    margin-top: 18px;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .about-why-card {
    min-height: 0;
    padding: 18px 14px 16px;
  }

  .about-why-card .about-why-icon-wrap {
    width: 48px;
    height: 48px;
  }

  .about-why-card strong {
    margin-top: 10px;
    font-size: 30px;
  }

  .about-why-card h3 {
    margin-top: 8px;
    font-size: 21px;
  }

  .about-why-card p {
    margin-top: 8px;
    font-size: 13px;
  }

  .about-why-card .learn-more {
    margin-top: 12px;
  }
}

@media (max-width: 375px) {
  .about-team {
    padding-inline: 14px;
  }

  .about-team-title {
    font-size: 24px;
  }

  .about-why-title {
    font-size: 22px;
  }

  .about-team-visual img {
    height: 196px;
  }

  .about-why {
    padding-inline: 14px;
  }
}

.about-history {
  background: #fff;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: 36px 24px 72px;
  --history-icon-size: 30px;
}

.about-history-inner {
  width: calc(100% - var(--container-gutter));
  max-width: var(--container-max);
  margin-inline: auto;
}

.about-history-head {
  text-align: center;
}

.about-history-title {
  margin: 0;
  color: #333;
  font-size: 46px;
  line-height: 1.08;
  letter-spacing: 0.02em;
}

.about-history-subtitle {
  margin: 6px 0 0;
  color: #666666;
  font-size: 22px;
}

.about-history-timeline {
  position: relative;
  margin-top: 22px;
  --history-center-row-gap: 8px;
  --history-axis-x: 50%;
  --history-dot-outer-r: 11px;
  --history-line-clear: 3px;
  --history-year-axis-y: 15px;
  --history-row-gap-after: 18px;
  --history-trunk-tail-length: 56px;
}

/* 主轴由各 history-row 自带线段组成；trunk 仅保留末尾衔接段（最后一项 → 底部里程碑） */
.about-history-timeline-trunk {
  position: relative;
}

.about-history-timeline-trunk::after {
  content: "";
  position: absolute;
  left: var(--history-axis-x);
  transform: translateX(-50%);
  top: 100%;
  width: 2px;
  height: var(--history-trunk-tail-length);
  background: #1d314f;
  pointer-events: none;
  z-index: 0;
}

.history-row {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 28px;
  /* 50% 竖线穿过列间距中心；节点需相对格边偏移半个 column-gap 才能与线重合 */
  --history-node-line-shift: 14px;
  /* 大屏：年份与卡片同侧外边距对齐（.history-card 的 margin-left / margin-right 为 34px） */
  --history-year-pad-match-card: 34px;
  align-items: start;
  margin-bottom: 0;
}

/* 行间间距用 padding：竖线 ::after 可延伸到行间区段；margin 在外侧会导致线与下一圆之间断开、视觉上「圆心上留白过高」 */
.history-row:not(.history-row--center) {
  padding-bottom: var(--history-row-gap-after);
}

/* 每项独立中心线段：圆上 / 圆下两段，端点与圆周线留白（不接圆心） */
.history-row:not(.history-row--center)::before {
  content: "";
  position: absolute;
  left: var(--history-axis-x);
  transform: translateX(-50%);
  width: 2px;
  top: 0;
  height: calc(
    var(--history-year-axis-y) - var(--history-dot-outer-r) -
      var(--history-line-clear)
  );
  background: #1d314f;
  pointer-events: none;
  z-index: 0;
}

.history-row:not(.history-row--center)::after {
  content: "";
  position: absolute;
  left: var(--history-axis-x);
  transform: translateX(-50%);
  width: 2px;
  top: calc(
    var(--history-year-axis-y) + var(--history-dot-outer-r) +
      var(--history-line-clear)
  );
  bottom: 0;
  background: #1d314f;
  pointer-events: none;
  z-index: 0;
}

/* trunk 内第一项：中心线两段均为虚线 */
.about-history-timeline-trunk
  > .history-row:first-child:not(.history-row--center)::before,
.about-history-timeline-trunk
  > .history-row:first-child:not(.history-row--center)::after {
  width: 0;
  top: 0;
  background: none;
  border-left: 2px dashed #1d314f;
  box-sizing: border-box;
  transform: translateX(-1px);
}
.history-year {
  position: relative;
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  color: #071938;
}

.history-year::before {
  content: "";
  position: absolute;
  top: 50%;
  width: 22px;
  height: 22px;
  transform: translate(-50%, -50%);
  border: 2px solid #1d314f;
  border-radius: 50%;
  background: #fff;
  z-index: 2;
}

.history-year::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: #000;
  z-index: 3;
}

.history-card {
  background: #f8f8f8;
  max-width: 700px;
  min-height: 58px;
  padding: 20px 18px;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 12px;
  box-sizing: border-box;
}

.history-card:not(:has(.history-card-icon)) {
  justify-content: center;
}

.history-card:not(:has(.history-card-icon)) span {
  flex: 0 1 auto;
  text-align: center;
}

.history-card-icon {
  width: var(--history-icon-size);
  height: var(--history-icon-size);
  object-fit: contain;
  flex-shrink: 0;
}

.history-card span {
  font-size: 18px;
  line-height: 1.45;
  color: #666666;
  flex: 1 1 auto;
  min-width: 0;
}

/* 左列一组：年份在上、卡片在下，靠向中线；右列一组：同理（大屏年份内边距与卡片内容区对齐） */
.history-row--left .history-year {
  grid-column: 1;
  grid-row: 1;
  text-align: right;
  padding-right: var(--history-year-pad-match-card);
  padding-left: 0;
  justify-self: end;
}

.history-row--left .history-card {
  justify-content: flex-end;
  grid-column: 1;
  grid-row: 2;
  margin-right: 34px;
  justify-self: end;
}

.history-row--left .history-card span {
  text-align: left;
}

.history-row--right .history-year {
  grid-column: 2;
  grid-row: 1;
  text-align: left;
  padding-left: var(--history-year-pad-match-card);
  padding-right: 0;
  justify-self: start;
}

.history-row--right .history-card {
  justify-content: flex-start;
  grid-column: 2;
  grid-row: 2;
  margin-left: 34px;
  justify-self: start;
}

.history-row--right .history-card span {
  text-align: left;
}

/* 节点贴在左列右缘 / 右列左缘，与 50% 竖线重合（含列间距半宽偏移） */
.history-row--left .history-year::before {
  left: auto;
  right: 0;
  transform: translate(calc(50% + var(--history-node-line-shift)), -50%);
}

/* 第一项的圆心轴线不显示 */
.history-row:first-child .history-year::before,
.history-row:first-child .history-year::after {
  display: none !important;
}

.history-row--left .history-year::after {
  left: auto;
  right: 0;
  transform: translate(calc(50% + var(--history-node-line-shift)), -50%);
}

.history-row--right .history-year::before {
  left: 0;
  right: auto;
  transform: translate(calc(-50% - var(--history-node-line-shift)), -50%);
}

.history-row--right .history-year::after {
  left: 0;
  right: auto;
  transform: translate(calc(-50% - var(--history-node-line-shift)), -50%);
}

.history-row--center {
  --history-center-disc-size: 120px;
  --history-center-icon-size: 54px;
  display: block;
  margin-top: 28px;
  margin-bottom: 0;
  text-align: center;
}

.history-row--center::before {
  display: none;
}

.history-center-milestone {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 700px;
  margin-inline: auto;
  padding-top: 0;
}

/* 圆形容器：包裹 icon + 年份 */
.history-center-disc {
  width: var(--history-center-disc-size);
  height: var(--history-center-disc-size);
  border-radius: 50%;
  background: #fafafa;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.history-center-icon {
  width: var(--history-center-icon-size);
  height: var(--history-center-icon-size);
  object-fit: contain;
  flex-shrink: 0;
}

.history-center-year {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  color: #071938;
}

.history-center-text {
  margin: 16px 0 0;
  max-width: 700px;
  font-size: 18px;
  line-height: 1.45;
  color: #666666;
  text-align: center;
}

@media (max-width: 1440px) {
  .about-history {
    padding: 32px 23px 66px;
    --history-icon-size: 28px;
  }

  .about-history-title {
    font-size: 44px;
  }
}

@media (max-width: 1366px) {
  .about-history {
    padding: 30px 22px 60px;
    --history-icon-size: 27px;
  }

  .about-history-title {
    font-size: 42px;
  }

  .about-history-subtitle {
    font-size: 20px;
  }
}

@media (max-width: 1280px) {
  .about-history {
    --history-icon-size: 26px;
  }

  .about-history-timeline {
    --history-row-gap-after: 14px;
  }

  .about-history-title {
    font-size: 40px;
  }

  .history-row {
    gap: 22px;
    --history-node-line-shift: 11px;
  }
}

@media (max-width: 1024px) {
  .about-history {
    padding: 26px 22px 50px;
    --history-icon-size: 24px;
  }

  .about-history-timeline {
    --history-center-disc-size: 110px;
    --history-axis-x: 7px;
    --history-year-axis-y: 16px;
    --history-trunk-tail-length: 48px;
    --history-row-gap-after: 12px;
    --history-line-clear: 3px;
  }

  .about-history-title {
    font-size: 34px;
  }

  .about-history-subtitle {
    font-size: 18px;
  }

  .history-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding-left: 26px;
  }

  /* 竖线宽 2px，中心在 6px + 1px；与 padding-left 对齐后节点中心落在竖线上 */
  .history-row--left .history-year::before,
  .history-row--right .history-year::before {
    left: calc(7px - 26px);
    right: auto;
    transform: translate(-50%, -50%);
  }

  .history-row--left .history-year::after,
  .history-row--right .history-year::after {
    left: calc(7px - 26px);
    right: auto;
    transform: translate(-50%, -50%);
  }

  .history-row--left .history-card,
  .history-row--right .history-card {
    grid-column: 1;
    grid-row: 2;
    margin: 0;
    justify-self: stretch;
  }

  .history-row--left .history-card {
    justify-content: flex-start;
  }

  .history-row--right .history-card {
    justify-content: flex-start;
  }

  .history-row--left .history-year,
  .history-row--right .history-year {
    grid-column: 1;
    grid-row: 1;
    text-align: left;
    padding: 0;
    font-size: 28px;
  }

  .history-row--center .history-center-year {
    font-size: 28px;
    text-align: left;
  }

  .history-row--left .history-year {
    justify-self: start;
  }

  .history-row--center {
    position: relative;
    margin-top: var(--history-center-row-gap);
    text-align: left;
    --history-center-disc-size: inherit;
    --history-center-icon-size: 50px;
  }

  /* 小屏：左侧结束节点（与 history-year 节点同款） */
  .history-row--center::before {
    display: block;
    content: "";
    position: absolute;
    left: 7px;
    top: calc(var(--history-center-disc-size) / 2);
    width: 13px;
    height: 13px;
    transform: translate(-50%, -50%);
    border: 2px solid #1d314f;
    border-radius: 50%;
    background: #fff;
    box-sizing: border-box;
    z-index: 2;
  }

  .history-row--center::after {
    display: block;
    content: "";
    position: absolute;
    left: 7px;
    top: calc(var(--history-center-disc-size) / 2);
    width: 5px;
    height: 5px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: #000;
    z-index: 3;
  }

  .history-row--center .history-center-milestone {
    align-items: flex-start;
    margin-inline: 0;
  }

  .history-row--center .history-center-text {
    text-align: left;
  }
}

@media (max-width: 768px) {
  .about-history {
    padding: 22px 18px 42px;
    --history-icon-size: 22px;
  }

  .about-history-timeline {
    --history-center-disc-size: 104px;
    --history-year-axis-y: 15px;
    --history-trunk-tail-length: 44px;
    --history-line-clear: 2px;
  }

  .about-history-title {
    font-size: 30px;
  }

  .history-row--left .history-year,
  .history-row--right .history-year,
  .history-row--center .history-center-year {
    font-size: 24px;
  }

  .history-row--center {
    --history-center-icon-size: 46px;
  }

  .history-card {
    min-height: 52px;
    padding: 16px 14px;
  }

  .history-card span {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .about-history {
    padding: 18px 16px 34px;
    --history-icon-size: 20px;
  }

  .about-history-timeline {
    --history-center-disc-size: 96px;
    --history-axis-x: 6px;
    --history-year-axis-y: 13px;
    --history-trunk-tail-length: 38px;
    --history-line-clear: 2px;
  }

  .about-history-title {
    font-size: 24px;
  }

  .about-history-subtitle {
    font-size: 14px;
  }

  .history-row {
    padding-left: 22px;
  }

  .history-row--left .history-year::before,
  .history-row--right .history-year::before {
    left: calc(6px - 22px);
    right: auto;
    transform: translate(-50%, -50%);
  }

  .history-row--left .history-year::after,
  .history-row--right .history-year::after {
    left: calc(6px - 22px);
    right: auto;
    transform: translate(-50%, -50%);
  }

  .history-row--left .history-year,
  .history-row--right .history-year,
  .history-row--center .history-center-year {
    padding: 0;
    font-size: 20px;
  }

  .history-row--center::before,
  .history-row--center::after {
    left: 6px;
  }

  .history-row--center {
    --history-center-icon-size: 42px;
  }

  .history-card span {
    font-size: 14px;
  }
}

@media (max-width: 375px) {
  .about-history {
    padding-inline: 14px;
    padding-bottom: 28px;
    --history-icon-size: 18px;
  }

  .about-history-timeline {
    --history-center-disc-size: 88px;
  }

  .about-history-title {
    font-size: 22px;
  }

  .history-row--center .history-center-year {
    font-size: 20px;
  }

  .history-row--center {
    --history-center-icon-size: 38px;
  }
}

/* —— Our facilities (tabbed gallery) —— */
.about-facilities {
  --facilities-accent: #0093ff;
  --facilities-tab-idle: #6f757f;
  background: #fcfcfc;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: 48px 24px 80px;
}

.about-facilities-inner {
  width: calc(100% - var(--container-gutter));
  max-width: var(--container-max);
  margin-inline: auto;
}

.about-facilities-head {
  text-align: center;
  margin-bottom: 32px;
}

.about-facilities-title {
  margin: 0;
  color: #2c2f37;
  font-size: 42px;
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.about-facilities-subtitle {
  margin: 10px 0 0;
  color: #6f757f;
  font-size: 20px;
  line-height: 1.45;
}

.about-facilities-body {
  margin-top: 8px;
}

.about-facilities-tabs {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  margin: 0 0 22px;
  padding: 0;
  border: 0;
  background: #fff;
}

.about-facilities-tab {
  position: relative;
  flex: 1;
  min-width: 0;
  margin: 0;
  padding: 16px 10px 18px;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--facilities-tab-idle);
  cursor: pointer;
  text-align: center;
  /* transition: color 0.15s ease; */
}

.about-facilities-tab::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: transparent;
  border-radius: 1px;
  /* transition: background 0.15s ease; */
}

.about-facilities-tab:hover,
.about-facilities-tab:focus-visible {
  color: #3d4450;
  outline: none;
}

.about-facilities-tab:focus-visible {
  box-shadow:
    0 0 0 2px #fff,
    0 0 0 4px var(--facilities-accent);
}

.about-facilities-tab.active,
.about-facilities-tab[aria-selected="true"] {
  color: var(--facilities-accent);
}

.about-facilities-tab.active::before,
.about-facilities-tab[aria-selected="true"]::before {
  background: var(--facilities-accent);
}

.about-facilities-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  width: 100%;
  justify-items: center;
}

.about-facilities-cell {
  margin: 0;
  padding: 0;
  min-width: 0;
  width: 100%;
  max-width: 386px;
}

.about-facilities-cell img {
  display: block;
  width: 100%;
  height: 475px;
  object-fit: cover;
}

@media (max-width: 1440px) {
  .about-facilities {
    padding: 44px 24px 72px;
  }

  .about-facilities-title {
    font-size: 38px;
  }

  .about-facilities-subtitle {
    font-size: 19px;
  }

  .about-facilities-tab {
    font-size: 16px;
  }

  .about-facilities-grid {
    gap: 12px;
  }

  .about-facilities-cell {
    max-width: none;
  }

  .about-facilities-cell img {
    height: auto;
    aspect-ratio: 386 / 475;
  }
}

@media (max-width: 1366px) {
  .about-facilities-title {
    font-size: 36px;
  }

  .about-facilities-subtitle {
    font-size: 18px;
  }
}

@media (max-width: 1280px) {
  .about-facilities {
    padding: 40px 22px 64px;
  }

  .about-facilities-head {
    margin-bottom: 28px;
  }

  .about-facilities-tab {
    padding: 14px 8px 16px;
    font-size: 15px;
  }

  .about-facilities-grid {
    gap: 10px;
  }
}

@media (max-width: 1024px) {
  .about-facilities {
    padding: 36px 20px 56px;
  }

  .about-facilities-title {
    font-size: 32px;
    letter-spacing: 0.03em;
  }

  .about-facilities-subtitle {
    font-size: 17px;
  }

  .about-facilities-tabs {
    gap: 6px;
    margin-bottom: 18px;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    justify-content: flex-start;
    flex-wrap: nowrap;
  }

  .about-facilities-tab {
    flex: 0 0 auto;
    min-width: max(140px, 22vw);
    padding: 12px 14px 16px;
    font-size: 14px;
  }

  .about-facilities-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
}

@media (max-width: 768px) {
  .about-facilities {
    padding: 32px 18px 48px;
  }

  .about-facilities-head {
    margin-bottom: 22px;
  }

  .about-facilities-title {
    font-size: 28px;
    letter-spacing: 0.02em;
  }

  .about-facilities-subtitle {
    font-size: 16px;
  }

  .about-facilities-tab {
    min-width: 124px;
    padding: 10px 10px 14px;
    font-size: 13px;
  }

  .about-facilities-grid {
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .about-facilities {
    padding: 26px 16px 40px;
  }

  .about-facilities-title {
    font-size: 24px;
  }

  .about-facilities-subtitle {
    font-size: 15px;
  }

  .about-facilities-tabs {
    margin-bottom: 16px;
  }

  .about-facilities-tab {
    min-width: 108px;
    font-size: 12px;
    padding: 10px 8px 12px;
  }

  .about-facilities-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .about-facilities-cell img {
    height: auto;
    aspect-ratio: 16 / 10;
    max-height: 220px;
  }
}

@media (max-width: 375px) {
  .about-facilities {
    padding: 22px 14px 36px;
  }

  .about-facilities-title {
    font-size: 22px;
  }

  .about-facilities-subtitle {
    font-size: 14px;
  }

  .about-facilities-tab {
    min-width: 100px;
    font-size: 11px;
  }
}

/* —— Academic collaborations + contact CTA —— */
.about-academic {
  background: #fff;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: 52px 24px 56px;
}

.about-academic-inner {
  width: calc(100% - var(--container-gutter));
  max-width: var(--container-max);
  margin-inline: auto;
}

.about-academic-head {
  text-align: center;
  margin-bottom: 36px;
}

.about-academic-title {
  margin: 0;
  color: #2c2f37;
  font-size: 38px;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.about-academic-subtitle {
  margin: 12px auto 0;
  max-width: 920px;
  color: #6f757f;
  font-size: 18px;
  line-height: 1.55;
}

.about-academic-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 510px);
  justify-content: center;
  gap: 22px 24px;
}

.about-academic-card {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  width: 510px;
  height: 195px;
  min-height: 195px;
  max-height: 195px;
  margin: 0;
  border: 1px solid #e5e6ea;
  border-radius: 0;
  background: #fff;
  overflow: hidden;
}

.about-academic-card-logo {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  min-height: 0;
  box-sizing: border-box;
}

.about-academic-card-logo img {
  display: block;
  max-width: 100%;
  width: auto;
  height: auto;
  max-height: 72px;
  object-fit: contain;
}

.about-academic-card-footer {
  flex-shrink: 0;
  box-sizing: border-box;
  margin-top: auto;
  height: 50px;
  min-height: 50px;
  max-height: 50px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #9e9e9e;
  color: #fff;
  font-size: 16px;
  line-height: 1.25;
  font-weight: 600;
  text-align: center;
}

.about-academic-cta {
  background: #fcfcfc;
  border-top: 1px solid #e5e6ea;
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding: 36px 24px 48px;
}

.about-academic-cta-inner {
  width: calc(100% - var(--container-gutter));
  max-width: var(--container-max);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px 40px;
  height: auto;
  min-height: 0;
}

.about-academic-cta-copy {
  flex: 1 1 280px;
  min-width: min(100%, 280px);
}

.about-academic-cta-title {
  margin: 0 0 8px;
  color: #2c2f37;
  font-size: 26px;
  line-height: 1.2;
  font-weight: 800;
}

.about-academic-cta-desc {
  margin: 0;
  color: #6f757f;
  font-size: 17px;
  line-height: 1.5;
}

.about-academic-cta-desc a {
  color: inherit;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.about-academic-cta-desc a:hover {
  color: var(--color-primary-hover, #0077df);
}

.about-academic-cta-actions {
  flex: 0 1 auto;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 28px 36px;
  min-width: 0;
}

.about-academic-cta-actions > .about-academic-cta-row {
  flex: 0 1 auto;
  min-width: 0;
}

.about-academic-cta-row {
  display: flex;
  align-items: center;
  gap: 18px;
}

.about-academic-cta-icon {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}

.about-academic-cta-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-academic-cta-icon--wa img {
  object-fit: contain;
}

.about-academic-cta-body {
  min-width: 0;
  flex: 1;
}

.about-academic-cta-tagline {
  margin: 0 0 10px;
  color: #6f757f;
  font-size: 14px;
  line-height: 1.4;
}

.about-academic-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 10px 26px;
  border: 1px solid #2c2f37;
  border-radius: 999px;
  background: #fff;
  color: #1a1a1a;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.about-academic-cta-btn:hover {
  background: #1a1a1a;
  border-color: #1a1a1a;
  color: #fff;
}

.about-academic-cta-btn:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 2px #fcfcfc,
    0 0 0 4px var(--color-primary, #008cff);
}

@media (max-width: 1440px) {
  .about-academic {
    padding: 48px 24px 52px;
  }

  .about-academic-title {
    font-size: 34px;
  }

  .about-academic-subtitle {
    font-size: 17px;
  }

  .about-academic-grid {
    gap: 20px 22px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    justify-content: stretch;
  }

  .about-academic-card {
    width: 100%;
    max-width: 510px;
    margin-inline: auto;
  }

  .about-academic-cta-title {
    font-size: 24px;
  }
}

@media (max-width: 1366px) {
  .about-academic-title {
    font-size: 32px;
  }
}

@media (max-width: 1280px) {
  .about-academic {
    padding: 44px 22px 48px;
  }

  .about-academic-head {
    margin-bottom: 30px;
  }

  .about-academic-card-logo {
    padding: 24px 16px 20px;
  }

  .about-academic-card-logo img {
    max-height: 68px;
  }

  .about-academic-cta {
    padding: 32px 22px 44px;
  }
}

@media (max-width: 1024px) {
  .about-academic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 20px;
  }

  .about-academic-cta-inner {
    flex-direction: column;
    align-items: stretch;
    align-content: flex-start;
    justify-content: flex-start;
    height: auto;
    min-height: auto;
    gap: 16px;
  }

  .about-academic-cta-copy {
    flex: 0 0 auto;
    text-align: center;
  }

  .about-academic-cta-actions {
    flex-direction: column;
    align-items: stretch;
    align-self: stretch;
    flex: 0 0 auto;
    max-width: 480px;
    width: 100%;
    margin-inline: auto;
    gap: 14px;
  }

  .about-academic-cta-actions > .about-academic-cta-row {
    flex: 0 0 auto;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .about-academic {
    padding: 36px 18px 40px;
  }

  .about-academic-title {
    font-size: 26px;
    letter-spacing: 0.03em;
  }

  .about-academic-subtitle {
    font-size: 16px;
  }

  .about-academic-grid {
    gap: 16px;
  }

  .about-academic-cta {
    padding: 24px 18px 28px;
  }

  .about-academic-cta-inner {
    gap: 14px;
  }

  .about-academic-cta-actions {
    gap: 12px;
  }

  .about-academic-cta-title {
    font-size: 22px;
    margin-bottom: 4px;
  }

  .about-academic-cta-desc {
    font-size: 16px;
  }

  .about-academic-cta-tagline {
    margin-bottom: 6px;
  }
}

@media (max-width: 480px) {
  .about-academic {
    padding: 28px 16px 32px;
  }

  .about-academic-head {
    margin-bottom: 24px;
  }

  .about-academic-title {
    font-size: 22px;
  }

  .about-academic-subtitle {
    font-size: 15px;
  }

  .about-academic-grid {
    grid-template-columns: 1fr;
  }

  .about-academic-card {
    width: 100%;
    max-width: 510px;
    margin-inline: auto;
    height: auto;
    min-height: 195px;
    max-height: none;
  }

  .about-academic-card-footer {
    padding: 0 12px;
  }

  .about-academic-cta {
    padding: 20px 16px 24px;
  }

  .about-academic-cta-inner {
    gap: 12px;
  }

  .about-academic-cta-actions {
    max-width: none;
    gap: 10px;
  }

  .about-academic-cta-title {
    margin-bottom: 4px;
  }

  .about-academic-cta-tagline {
    margin-bottom: 6px;
  }

  .about-academic-cta-btn {
    padding: 8px 22px;
  }

  .about-academic-cta-row {
    gap: 14px;
  }

  .about-academic-cta-icon,
  .about-academic-cta-icon--wa {
    width: 64px;
    height: 64px;
  }
}

@media (max-width: 375px) {
  .about-academic-title {
    font-size: 20px;
  }

  .about-academic-card-logo img {
    max-height: 80px;
  }

  .about-academic-cta-title {
    font-size: 20px;
  }

  .about-academic-cta-btn {
    padding: 9px 22px;
    font-size: 13px;
  }
}