.page-about {
  --about-num-size: clamp(2.8rem, 6vw, 4.5rem);
  background: var(--white-bright);
  color: var(--black-ink);
}

.page-about .content-wrap {
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.page-about .breadcrumb {
  background: var(--green-deep);
  padding: calc(var(--header-height) + 0.75rem) 0 0.75rem;
  margin: 0;
}

.page-about .breadcrumb .content-wrap {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.page-about .breadcrumb a,
.page-about .breadcrumb [aria-current="page"] {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: rgba(245, 245, 240, 0.78);
  text-decoration: none;
  transition: color var(--transition);
}

.page-about .breadcrumb a:hover {
  color: var(--gold-light);
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--gold-light);
  font-weight: 600;
}

.page-about .breadcrumb__sep {
  color: var(--gold);
}

.page-about .section-index {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(3rem, 8vw, 5.5rem);
  line-height: 1;
  letter-spacing: 0.04em;
}

.page-about .about-intro .section-index,
.page-about .about-capability .section-index {
  color: rgba(245, 245, 240, 0.12);
  -webkit-text-stroke: 1.5px var(--gold);
}

.page-about .about-miles .section-index,
.page-about .about-people .section-index {
  color: rgba(11, 61, 46, 0.08);
  -webkit-text-stroke: 1.5px rgba(11, 61, 46, 0.35);
}

.page-about .about-kicker {
  margin: 0.75rem 0 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.page-about .about-intro .about-kicker,
.page-about .about-capability .about-kicker {
  color: var(--gold);
}

.page-about .about-miles .about-kicker,
.page-about .about-people .about-kicker {
  color: var(--green-deep);
}

.page-about h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  line-height: 1.15;
  margin: 0.5rem 0 1rem;
}

.page-about .lead-text {
  font-size: 1.125rem;
  line-height: 1.7;
  max-width: 46rem;
  color: inherit;
}

.page-about p {
  line-height: 1.75;
}

/* 01 关于我们 */
.page-about .about-intro {
  position: relative;
  overflow: hidden;
  background: var(--green-deep);
  color: var(--white-bright);
  padding: 2.5rem 0 5rem;
}

.page-about .about-intro::before {
  content: "";
  position: absolute;
  right: -12%;
  top: 6%;
  width: 55%;
  height: 70%;
  background: var(--grad-gold);
  opacity: 0.14;
  clip-path: polygon(30% 0, 100% 0, 75% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-intro::after {
  content: "";
  position: absolute;
  right: 2rem;
  bottom: 1.5rem;
  width: 7rem;
  height: 7rem;
  background: var(--grad-gold);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  opacity: 0.3;
  pointer-events: none;
}

.page-about .about-intro__grid {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-intro h1 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.12;
  margin: 0.75rem 0 1.25rem;
}

.page-about .about-intro__desc {
  color: rgba(245, 245, 240, 0.78);
  max-width: 44rem;
  margin-top: 1rem;
}

.page-about .about-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.page-about .about-profile-card {
  position: relative;
  background: rgba(245, 245, 240, 0.05);
  border: 1px solid rgba(212, 175, 55, 0.45);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem 1.5rem;
  color: var(--white-bright);
}

.page-about .about-profile-card::after {
  content: "";
  position: absolute;
  right: -0.9rem;
  bottom: -0.9rem;
  width: 4.5rem;
  height: 4.5rem;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  border-radius: 0 0 10px 0;
  pointer-events: none;
}

.page-about .about-profile-card__label {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gold-light);
}

.page-about .about-profile-card__list {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.page-about .about-profile-card__list > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px dashed rgba(245, 245, 240, 0.18);
  padding-bottom: 0.625rem;
}

.page-about .about-profile-card__list dt {
  font-size: 0.875rem;
  color: rgba(245, 245, 240, 0.65);
}

.page-about .about-profile-card__list dd {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--gold-light);
  text-align: right;
}

.page-about .about-profile-card__link {
  display: inline-block;
  margin-top: 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 175, 55, 0.5);
  padding-bottom: 0.125rem;
  transition: color var(--transition), border-color var(--transition);
}

.page-about .about-profile-card__link:hover {
  color: var(--gold-light);
  border-color: var(--gold-light);
}

/* 02 发展里程碑 */
.page-about .about-miles {
  background: var(--white-bright);
  padding: 3.5rem 0;
}

.page-about .about-miles__layout {
  display: grid;
  gap: 2rem;
}

.page-about .about-miles__intro > p:last-child {
  color: var(--gray-mid);
  max-width: 24rem;
}

.page-about .about-miles__track {
  position: relative;
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 2rem 0.125rem 1rem;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-miles__track::before {
  content: "";
  position: absolute;
  top: calc(2rem - 8px);
  left: 0.125rem;
  right: 0.125rem;
  height: 2px;
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.15), var(--gold) 30%, var(--gold-light) 50%, var(--gold) 70%, rgba(212, 175, 55, 0.15));
  pointer-events: none;
}

.page-about .mile-card {
  position: relative;
  flex: 0 0 min(85%, 320px);
  scroll-snap-align: center;
  background: var(--white-bright);
  border: 1px solid var(--gray-light);
  border-top: 3px solid var(--gold);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  box-shadow: 0 12px 30px rgba(26, 26, 26, 0.06);
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about .mile-card::before {
  content: "";
  position: absolute;
  top: -15px;
  left: 1.5rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.2);
}

.page-about .mile-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(26, 26, 26, 0.1);
}

.page-about .mile-card__year {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1;
  color: var(--green-deep);
  margin-bottom: 0.75rem;
}

.page-about .mile-card__year::after {
  content: "";
  display: block;
  width: 2.5rem;
  height: 3px;
  background: var(--gold);
  margin-top: 0.5rem;
}

.page-about .mile-card h3 {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  margin: 0.5rem 0 0.625rem;
  color: var(--black-ink);
}

.page-about .mile-card p {
  font-size: 0.9375rem;
  color: var(--gray-mid);
  margin: 0;
}

.page-about .about-miles__figure {
  margin: 3rem 0 0;
}

.page-about .about-miles__figure figcaption {
  font-size: 0.875rem;
  color: var(--gray-mid);
  margin-top: 0.75rem;
  padding-left: 1rem;
  border-left: 3px solid var(--gold);
  line-height: 1.6;
}

/* 03 数据服务能力 */
.page-about .about-capability {
  position: relative;
  overflow: hidden;
  background: var(--green-deep);
  color: var(--white-bright);
  padding: 4rem 0 4.5rem;
}

.page-about .about-capability::after {
  content: "";
  position: absolute;
  right: -10%;
  top: 32%;
  width: 48%;
  height: 90px;
  background: rgba(212, 175, 55, 0.08);
  transform: skewX(-18deg);
  pointer-events: none;
}

.page-about .about-capability__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 2.5rem 0 2rem;
}

.page-about .about-stat {
  background: rgba(245, 245, 240, 0.04);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem;
  text-align: center;
}

.page-about .about-stat__value {
  display: flex;
  align-items: baseline;
  justify-content: center;
}

.page-about .about-stat__num {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--about-num-size);
  line-height: 1;
  color: var(--gold-light);
}

.page-about .about-stat__unit {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--gold);
  margin-left: 0.25rem;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(245, 245, 240, 0.7);
}

.page-about .about-capability__detail {
  max-width: 46rem;
  color: rgba(245, 245, 240, 0.82);
}

.page-about .about-capability__detail > p {
  margin: 0 0 1.5rem;
}

.page-about .accordion-item {
  margin-top: 1rem;
}

.page-about .accordion-item__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  border: none;
  background: var(--grad-gold);
  color: var(--green-deep);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about .accordion-item[data-open] .accordion-item__header {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.page-about .accordion-item__header:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
}

.page-about .accordion-item__icon {
  position: relative;
  flex: none;
  width: 13px;
  height: 13px;
}

.page-about .accordion-item__icon::before,
.page-about .accordion-item__icon::after {
  content: "";
  position: absolute;
  background: var(--green-deep);
  border-radius: 2px;
  transition: transform var(--transition);
}

.page-about .accordion-item__icon::before {
  top: 5px;
  left: 0;
  width: 13px;
  height: 2px;
}

.page-about .accordion-item__icon::after {
  top: 0;
  left: 5px;
  width: 2px;
  height: 13px;
}

.page-about .accordion-item[data-open] .accordion-item__icon::after {
  transform: scaleY(0);
}

.page-about .accordion-item__content {
  background: var(--white-bright);
  border: 1px solid var(--gray-light);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  padding: 1.25rem;
  color: var(--black-ink);
}

.page-about .about-league-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.page-about .about-league-grid h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  margin: 0 0 0.5rem;
  color: var(--green-deep);
}

.page-about .about-league-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.page-about .about-league-grid li {
  font-size: 0.9rem;
  color: var(--gray-mid);
}

.page-about .about-league-note {
  font-size: 0.825rem;
  color: var(--gray-mid);
  margin-top: 1rem;
  line-height: 1.6;
}

/* 04 团队与文化 */
.page-about .about-people {
  background: var(--white-bright);
  padding: 4rem 0 3rem;
}

.page-about .about-people__grid {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.page-about .about-people__copy p {
  color: var(--gray-mid);
}

.page-about .about-people__copy .lead-text {
  color: var(--black-ink);
}

.page-about .about-people__figure {
  margin: 0;
}

.page-about .about-people__figure figcaption {
  font-size: 0.875rem;
  color: var(--gray-mid);
  margin-top: 0.5rem;
  font-style: italic;
  line-height: 1.6;
}

.page-about .about-honor {
  display: grid;
  gap: 1.5rem;
  align-items: center;
  margin-top: 3rem;
  padding: 2rem;
  background: var(--green-deep);
  border-radius: var(--radius-md);
  color: var(--white-bright);
}

.page-about .about-honor__figure {
  margin: 0;
}

.page-about .about-honor__list h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--gold-light);
  margin: 0 0 1rem;
}

.page-about .about-honor__list ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.875rem;
}

.page-about .about-honor__list li {
  position: relative;
  padding-left: 1.75rem;
  line-height: 1.7;
  color: rgba(245, 245, 240, 0.85);
}

.page-about .about-honor__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
}

@media (min-width: 640px) {
  .page-about .about-capability__stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-league-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 768px) {
  .page-about .about-honor {
    grid-template-columns: 280px 1fr;
    padding: 2.25rem;
  }
}

@media (min-width: 1024px) {
  .page-about .breadcrumb {
    padding-top: calc(var(--header-height) + 1.25rem);
  }

  .page-about .about-intro {
    padding: 3.5rem 0 6rem;
  }

  .page-about .about-intro__grid {
    grid-template-columns: 1fr minmax(320px, 380px);
    gap: 4rem;
    align-items: center;
  }

  .page-about .about-intro__copy {
    padding-top: 1rem;
  }

  .page-about .about-profile-card {
    margin-top: 0;
  }

  .page-about .about-miles,
  .page-about .about-people {
    padding: 6rem 0;
  }

  .page-about .about-miles__layout {
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-miles__intro {
    position: sticky;
    top: calc(var(--header-height) + 2.5rem);
  }

  .page-about .about-miles__track {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    overflow: visible;
    padding-top: 2rem;
  }

  .page-about .mile-card {
    flex: none;
  }

  .page-about .about-capability {
    padding: 5.5rem 0 6rem;
  }

  .page-about .about-people__grid {
    grid-template-columns: 1fr 360px;
    align-items: center;
    gap: 3.5rem;
  }

  .page-about .about-honor {
    margin-top: 4rem;
  }
}