/* 关于我们页 */

.home-wrap {
  max-width: var(--container-width, 1400px);
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 576px) {
  .home-wrap {
    padding: 0 16px;
  }
}

/* ---------- 公司简介 ---------- */

.about-intro {
  padding: 64px 0 72px;
  background: var(--color-bg, #fff);
}

.about-intro__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 48px 56px;
  align-items: center;
}

.about-intro__title {
  margin: 0 0 28px;
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-heading, #1e2a38);
}

.about-intro__text {
  margin: 0 0 18px;
  font-size: var(--font-size-base, 16px);
  line-height: 1.75;
  color: var(--color-text, #2d3a4a);
}

.about-intro__text:last-of-type {
  margin-bottom: 24px;
}

.about-intro__desc {
  font-size: var(--font-size-base, 16px);
  line-height: 1.75;
  color: var(--color-text, #2d3a4a);
}

.about-intro__desc > :first-child {
  margin-top: 0;
}

.about-intro__desc > :last-child {
  margin-bottom: 0;
}

.about-intro__desc p {
  margin: 0 0 18px;
}

.about-intro__desc ul {
  margin: 0 0 24px;
  padding: 0 0 0 20px;
  list-style: disc;
}

.about-intro__desc li + li {
  margin-top: 6px;
}

.about-intro__list {
  margin: 0;
  padding: 0 0 0 20px;
  list-style: disc;
}

.about-intro__list li {
  font-size: var(--font-size-base, 16px);
  line-height: 1.75;
  color: var(--color-text, #2d3a4a);
}

.about-intro__list li + li {
  margin-top: 6px;
}

.about-intro__media {
  overflow: hidden;
  background: var(--color-bg-muted, #f5f6f8);
}

.about-intro__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 数据统计（主题色条） ---------- */

.about-stats {
  padding: 56px 0;
  background: var(--color-primary);
}

.about-stats__inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: center;
}

.about-stats__number {
  margin: 0 0 12px;
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: #fff;
}

.about-stats__label {
  margin: 0;
  max-width: 280px;
  margin-left: auto;
  margin-right: auto;
  font-size: 15px;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.92);
}

@media (max-width: 992px) {
  .about-intro__inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .about-intro__media {
    max-width: 560px;
    margin: 0 auto;
    width: 100%;
  }

  .about-stats__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 576px) {
  .about-intro {
    padding: 40px 0 48px;
  }

  .about-stats {
    padding: 40px 0;
  }

  .about-stats__number {
    margin-bottom: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .about-stats__number {
    transition: none;
  }
}

/* ---------- 发展历程时间轴 ---------- */

.about-history {
  padding: 72px 0 80px;
  background: var(--color-bg-muted, #f5f6f8);
}

.about-history__title {
  margin: 0 0 48px;
  font-size: clamp(24px, 2.8vw, 34px);
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  color: var(--color-heading, #1e2a38);
}

.about-history__timeline {
  margin-bottom: 36px;
}

.about-history__track {
  position: relative;
  --history-dot-size: 30px;
  --history-year-gap: 16px;
}

.about-history__line {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(var(--history-dot-size) / 2 - 1px);
  height: 2px;
  background: #d8dde3;
  pointer-events: none;
}

.about-history__years {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.about-history__tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--history-year-gap);
  margin: 0;
  padding: 0;
  font: inherit;
  color: var(--color-text-secondary, #5a6a7a);
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s ease;
}

.about-history__year {
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
}

.about-history__dot {
  position: relative;
  z-index: 1;
  box-sizing: border-box;
  width: var(--history-dot-size);
  height: var(--history-dot-size);
  background: #8a96a3;
  border: 3px solid var(--color-bg-muted, #f5f6f8);
  border-radius: 50%;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.about-history__tab:hover {
  color: var(--color-primary);
}

.about-history__tab:hover .about-history__dot {
  background: var(--color-primary-hover);
}

.about-history__tab.is-active {
  color: var(--color-primary);
}

.about-history__tab.is-active .about-history__dot {
  background: var(--color-primary);
  border-color: var(--color-bg-muted, #f5f6f8);
}

.about-history__card {
  margin-bottom: 40px;
  padding: 36px 40px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 24px rgba(30, 42, 56, 0.08);
}

.about-history__card-title {
  margin: 0 0 14px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-heading, #1e2a38);
}

.about-history__card-text {
  margin: 0;
  font-size: var(--font-size-base, 16px);
  line-height: 1.7;
  color: var(--color-text-secondary, #5a6a7a);
}

.about-history__video {
  overflow: hidden;
  border-radius: 10px;
  background: #000;
}

.about-history__video-el {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: top;
  border-radius: 10px;
}

@media (max-width: 992px) {
  .about-history__timeline {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-left: -16px;
    margin-right: -16px;
    padding: 0 16px 30px;
  }

  .about-history__track {
    min-width: 720px;
  }

  .about-history__years {
    min-width: 100%;
  }
}

/* ---------- ODM / OEM ---------- */

.about-support {
  padding: 72px 0;
  background: var(--color-bg, #fff);
}

.about-support__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px 56px;
  align-items: center;
}

.about-support__row + .about-support__row {
  margin-top: 72px;
}

.about-support__row--reverse .about-support__content {
  order: 1;
}

.about-support__row--reverse .about-support__media {
  order: 2;
}

.about-support__media {
  overflow: hidden;
  border-radius: var(--radius-button, 4px);
  background: var(--color-bg-muted, #f5f6f8);
}

.about-support__media img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-button, 4px);
}

.about-support__title {
  margin: 0 0 20px;
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-heading, #1e2a38);
}

.about-support__text {
  margin: 0;
  font-size: var(--font-size-base, 16px);
  line-height: 1.75;
  color: var(--color-text, #2d3a4a);
}

/* ---------- Our Exhibitions 轮播 ---------- */

.about-exhibitions {
  padding: 0 0 80px;
  background: var(--color-bg, #fff);
}

.about-exhibitions__head {
  background: var(--color-primary);
}

.about-exhibitions__title {
  margin: 0;
  padding: 22px 0;
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  color: #fff;
}

.about-exhibitions__body {
  padding-top: 30px;
}

.about-exhibitions__outer {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.about-exhibitions__swiper {
  width: 100%;
}

.about-exhibitions__slide {
  overflow: hidden;
  background: var(--color-bg-muted, #f5f6f8);
}

.about-exhibitions__slide img {
  display: block;
  width: 100%;
  aspect-ratio: 1400 / 788;
  object-fit: cover;
}

.about-exhibitions__nav {
  position: absolute;
  top: 50%;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0;
  padding: 0;
  color: #fff;
  background: rgba(0, 0, 0, 0.45);
  border: none;
  border-radius: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  transition: background 0.2s ease;
}

.about-exhibitions__nav:hover {
  background: rgba(0, 0, 0, 0.62);
}

.about-exhibitions__nav--prev {
  left: 16px;
}

.about-exhibitions__nav--next {
  right: 16px;
}

@media (max-width: 992px) {
  .about-support__row,
  .about-support__row--reverse {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .about-support__row--reverse .about-support__content {
    order: 2;
  }

  .about-support__row--reverse .about-support__media {
    order: 1;
  }

  .about-support__row + .about-support__row {
    margin-top: 48px;
  }
}

@media (max-width: 576px) {
  .about-support {
    padding: 48px 0;
  }

  .about-exhibitions {
    padding-bottom: 56px;
  }

  .about-exhibitions__title {
    padding: 18px 0;
  }

  .about-exhibitions__nav {
    width: 36px;
    height: 36px;
  }

  .about-exhibitions__nav--prev {
    left: 8px;
  }

  .about-exhibitions__nav--next {
    right: 8px;
  }

  .about-history {
    padding: 48px 0 56px;
  }

  .about-history__title {
    margin-bottom: 32px;
  }

  .about-history__card {
    padding: 24px 20px;
    margin-bottom: 28px;
  }

  .about-history__card-title {
    font-size: 18px;
  }

  .about-history__year {
    font-size: 13px;
  }
}

/* ---------- service philosophy ---------- */

.about-philosophy {
  padding:0 0 72px;
  background: var(--color-bg-muted, #f5f6f8);
}

.about-philosophy__title {
  margin: 0 0 40px;
  padding-top: 50px;
  font-size: clamp(24px, 2.8vw, 34px);
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  color: var(--color-heading, #1e2a38);
  text-transform: lowercase;
}

.about-philosophy__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.about-philosophy__card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-button, 4px);
}

.about-philosophy__card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-button, 4px);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 35%, rgba(0, 0, 0, 0.72) 100%);
  pointer-events: none;
}

.about-philosophy__card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-button, 4px);
}

.about-philosophy__label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  margin: 0;
  padding: 18px 14px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
  text-align: center;
  color: #fff;
}

/* ---------- Team's mien ---------- */

.about-team {
  padding: 72px 0;
  background: var(--color-bg, #fff);
}

.about-team__title {
  margin: 0 0 40px;
  font-size: clamp(24px, 2.8vw, 34px);
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  color: var(--color-heading, #1e2a38);
}

.about-team__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.about-team__media {
  overflow: hidden;
  border-radius: var(--radius-button, 4px);
  background: var(--color-bg-muted, #f5f6f8);
}

.about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-button, 4px);
}

/* ---------- Our Certificate 轮播 ---------- */

.about-certificate {
  padding: 72px 0 80px;
  background: var(--color-bg-muted, #f5f6f8);
}

.about-certificate__header {
  margin-bottom: 40px;
  text-align: center;
}

.about-certificate__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 2.8vw, 34px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-heading, #1e2a38);
}

.about-certificate__subtitle {
  margin: 0;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text-secondary, #5a6a7a);
}

.about-certificate__outer {
  position: relative;
  overflow: visible;
}

.about-certificate__swiper {
  width: 100%;
  overflow: hidden;
}

.about-certificate__slide {
  overflow: hidden;
  border-radius: var(--radius-button, 4px);
  background: #fff;
}

.about-certificate__slide img {
  display: block;
  width: 100%;
  aspect-ratio: 768 / 1077;
  object-fit: cover;
  object-position: top center;
  border-radius: var(--radius-button, 4px);
}

.about-certificate__nav {
  position: absolute;
  top: 50%;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0;
  padding: 0;
  color: #fff;
  background: rgba(0, 0, 0, 0.45);
  border: none;
  border-radius: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  transition: background 0.2s ease;
}

.about-certificate__nav:hover {
  background: rgba(0, 0, 0, 0.62);
}

.about-certificate__nav--prev {
  left: 0;
}

.about-certificate__nav--next {
  right: 0;
}

@media (min-width: 577px) {
  .about-certificate__nav--prev {
    left: -6px;
  }

  .about-certificate__nav--next {
    right: -6px;
  }
}

@media (max-width: 992px) {
  .about-philosophy__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .about-team__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 576px) {
  .about-philosophy {
    padding: 48px 0;
  }

  .about-philosophy__title {
    margin-bottom: 28px;
  }

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

  .about-philosophy__label {
    font-size: 15px;
    padding: 20px 16px;
  }

  .about-team {
    padding: 48px 0;
  }

  .about-team__title {
    margin-bottom: 28px;
  }

  .about-certificate {
    padding: 48px 0 56px;
  }

  .about-certificate__header {
    margin-bottom: 28px;
  }

  .about-certificate__nav {
    width: 36px;
    height: 36px;
  }
}