/* 关于我们 / 品牌故事：首屏背景图 + 故事七卡 + 历程露出 + 定位价值观 + 成果数据 */

.about-hero {
  height: 660px;
  background: #000;
}

.about-hero .iot-hero__content {
  align-items: center;
  justify-content: center;
  width: var(--content-width);
  max-width: var(--content-width);
  height: 100%;
  margin: 0 auto;
  padding-top: 0;
  gap: 20px;
  text-align: center;
}

.about-hero .iot-hero__texts {
  align-items: center;
  width: min(672px, 100%);
  gap: 20px;
}

.about-hero .iot-hero__eyebrow,
.about-hero .iot-hero__title,
.about-hero .iot-hero__sub {
  width: auto;
  max-width: 100%;
}

.about-hero .iot-hero__eyebrow {
  font-weight: 700;
}

.about-hero .iot-hero__title {
  line-height: 64px;
  white-space: nowrap;
}

.about-hero__br {
  display: none;
}

.about-hero .iot-hero__sub {
  color: var(--color-white);
}

.about-story {
  position: relative;
  overflow: hidden;
  background: var(--color-white);
  padding: 136px 0 80px;
}

.about-story__wave {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 0;
  width: 100%;
  height: auto;
  max-width: 100%;
  transform: translateY(-33.7%);
  pointer-events: none;
}

.about-story .wrap {
  position: relative;
  z-index: 1;
}

.about-story__head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 360px;
  text-align: center;
}

.about-story__layout {
  display: grid;
  grid-template-columns: minmax(0, 624px) minmax(220px, 1fr);
  column-gap: clamp(72px, 10%, 120px);
  align-items: center;
  margin-bottom: 60px;
}

.about-story__copy {
  display: flex;
  flex-direction: column;
  gap: 24px;
  width: 100%;
  max-width: 624px;
  min-width: 0;
  margin-bottom: 0;
  color: var(--color-sub);
  font-size: 16px;
  line-height: 28px;
  text-align: justify;
  text-justify: inter-character;
}

.about-story__copy h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 28px;
  color: var(--color-text);
  text-align: left;
}

.about-story__media {
  min-width: 0;
}

.about-story__cover {
  position: relative;
  display: block;
  width: 100%;
  max-width: 463px;
  margin-left: auto;
  padding: 0;
  border: 0;
  border-radius: 12px;
  overflow: hidden;
  background: #111;
  aspect-ratio: 16 / 9;
  cursor: pointer;
}

.about-story__poster {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #111;
  pointer-events: none;
}

.video-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.72);
  animation: none;
  transition: none;
}

.video-overlay[hidden] {
  display: none;
}

.video-overlay__close {
  position: absolute;
  top: 28px;
  right: 32px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #fff;
  cursor: pointer;
}

.video-overlay__close svg {
  display: block;
  width: 24px;
  height: 24px;
}

.video-overlay__close:hover {
  opacity: 0.7;
}

.video-overlay__stage {
  width: min(960px, calc(100% - 80px), calc((100svh - 120px) * 16 / 9));
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 8px;
  background: #000;
  animation: none;
  transition: none;
}

.video-overlay__player {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
  animation: none;
  transition: none;
}

body.video-open {
  overflow: hidden;
}

.about-roles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
}

.about-role {
  min-width: 0;
  padding: 40px 20px;
  border-radius: 20px;
  background: var(--color-module);
}

.about-role h3 {
  margin-bottom: 8px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

.about-role p {
  font-size: 16px;
  line-height: 20px;
  color: var(--color-sub);
}

.about-years {
  overflow: hidden;
  background: var(--color-module);
  padding: 65px 0 60px;
}

.about-years__head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 65px;
  text-align: center;
}

.about-years__viewport {
  position: relative;
  width: 100%;
  overflow: hidden;
  cursor: grab;
  touch-action: pan-y;
  overscroll-behavior-x: contain;
  user-select: none;
}

.about-years__viewport.is-all-visible {
  cursor: default;
  touch-action: auto;
}

.about-years__viewport.is-dragging {
  cursor: grabbing;
}

.about-years__viewport.is-dragging .about-years__track {
  transition: none;
}

.about-years__track {
  display: flex;
  gap: 30px;
  width: max-content;
  padding-left: 20px;
  transition: transform 0.4s ease;
}

.about-year {
  display: flex;
  flex: 0 0 calc((var(--content-width) + 40px) / 3);
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  min-height: 344px;
  padding: 40px;
  border-radius: 20px;
  background: var(--color-white);
}

.about-year h3 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

.about-year__year {
  color: var(--color-primary);
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
}

.about-year__line {
  width: 100%;
  height: 0;
  border-top: 1px solid var(--color-line);
}

.about-year p {
  font-size: 16px;
  line-height: 28px;
  color: var(--color-sub);
}

.about-year p.about-year__year {
  color: var(--color-primary);
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.about-years__pager {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 24px;
  right: 24px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
}

.about-years__pager[hidden] {
  display: none;
}

.about-years__pager .pager-btn {
  pointer-events: auto;
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 8px 24px rgba(18, 18, 18, 0.12);
}

.about-years__pager .pager-btn img {
  display: block;
  width: 56px;
  height: 56px;
}

.about-belief {
  background: var(--color-dark);
}

.about-belief__vals {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 80px 0;
  color: var(--color-white);
}

.about-belief__head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
  text-align: center;
}

.about-belief .sec-label,
.about-belief .sec-label span,
.about-belief .sec-title {
  color: var(--color-white);
}

.about-belief__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.about-value {
  min-width: 0;
  padding: 40px;
  border-radius: 20px;
  background: var(--color-white-11);
}

.about-value h3 {
  margin-bottom: 8px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.about-value p {
  font-size: 14px;
  line-height: 22px;
  color: var(--color-white-60);
}

.about-stats {
  background: var(--color-white);
  padding: 80px 0;
}

.about-stats__head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
  text-align: center;
}

.about-stats__row {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 24px;
  padding: 40px 0;
}

.about-stat {
  display: flex;
  flex: 0 1 auto;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-width: 0;
  text-align: center;
}

.about-stat strong {
  color: var(--color-primary);
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
}

.about-stat strong i {
  font-size: 24px;
  font-style: normal;
  font-weight: 700;
}

.about-stat strong i.about-stat__unit {
  font-size: 16px;
}

.about-stat > span {
  color: var(--color-sub);
  font-size: 14px;
  line-height: 1.3;
}

.about-cta .iot-cta__inner {
  width: 100%;
}

.about-cta__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}