.page-about {
  --about-hair: rgba(242, 239, 230, 0.12);
  --about-cyan-line: rgba(63, 242, 198, 0.24);
  --about-card: rgba(20, 58, 49, 0.55);
  background:
    radial-gradient(88% 46% at 90% 0%, rgba(63, 242, 198, 0.1), transparent 62%),
    var(--night);
  color: var(--warm);
  font-family: var(--font-body);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
  overflow-x: hidden;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about .about-wrap {
  width: min(calc(100% - 2 * var(--gutter)), var(--shell));
  margin-inline: auto;
}

/* 面包屑 */
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: clamp(1rem, 3vw, 1.7rem);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-about .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-about .breadcrumb a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .breadcrumb__sep {
  color: rgba(159, 183, 173, 0.45);
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--warm);
}

/* 首屏 */
.page-about .about-hero {
  padding-block: clamp(1.4rem, 4vw, 2.6rem) clamp(1.8rem, 4vw, 3rem);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.7rem, 4vw, 3rem);
}

.page-about .about-kicker {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 8.4vw, 4.7rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--warm);
}

.page-about .about-hero__accent {
  color: var(--cyan);
  display: inline-block;
  position: relative;
}

.page-about .about-hero__accent::after {
  content: "";
  position: absolute;
  left: 0;
  right: 12%;
  bottom: -0.12em;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), transparent);
  transform: skewX(-24deg);
}

.page-about .about-hero__lede {
  margin: clamp(1.1rem, 3vw, 1.7rem) 0 0;
  max-width: 34em;
  font-size: clamp(0.98rem, 2.1vw, 1.12rem);
  line-height: 1.85;
  color: var(--warm);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: clamp(1.3rem, 3vw, 1.9rem);
}

.page-about .about-hero__aside {
  border-top: 1px solid var(--about-cyan-line);
  padding-top: 1rem;
}

.page-about .about-figures__title {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

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

.page-about .about-figures__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--about-hair);
}

.page-about .about-figures__row:last-child {
  border-bottom: 0;
}

.page-about .about-figures dt {
  font-size: 0.85rem;
  color: var(--mist);
  letter-spacing: 0.02em;
}

.page-about .about-figures dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--warm);
}

.page-about .about-figures dd .num {
  color: var(--cyan);
  font-size: 1.3rem;
  margin-right: 0.15em;
}

/* 数据带 */
.page-about .about-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
}

.page-about .about-strip__item {
  background: var(--field);
  padding: clamp(0.85rem, 2.4vw, 1.25rem) clamp(0.8rem, 2vw, 1.1rem);
  display: flex;
  flex-direction: column;
  gap: 0.32rem;
}

.page-about .about-strip__num {
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 3.4vw, 1.7rem);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-about .about-strip__item:nth-child(3) .about-strip__num,
.page-about .about-strip__item:nth-child(4) .about-strip__num {
  color: var(--amber);
}

.page-about .about-strip__label {
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* 页内目录 */
.page-about .about-index {
  margin-bottom: clamp(1.8rem, 4vw, 3rem);
}

.page-about .about-index__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.6rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.75rem;
  white-space: nowrap;
  font-size: 0.82rem;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--about-hair);
  border-radius: 2px;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}

.page-about .about-index__list a .num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  color: var(--warm);
  border-color: var(--cyan);
  background: rgba(63, 242, 198, 0.08);
}

/* 区块框架 */
.page-about .about-section {
  padding-block: clamp(2.2rem, 5.5vw, 4rem);
}

.page-about .about-section--field {
  background: linear-gradient(180deg, var(--field), rgba(13, 43, 34, 0.35));
  border-top: 1px solid var(--about-hair);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-head {
  margin-bottom: clamp(1.4rem, 3.5vw, 2.4rem);
  max-width: 46rem;
}

.page-about .about-head__label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-head__label::before {
  content: "";
  width: 1.8rem;
  height: 1px;
  background: var(--cyan);
}

.page-about .about-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 5.2vw, 2.75rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--warm);
}

.page-about .about-head__lede {
  margin: 0.85rem 0 0;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--mist);
  max-width: 38em;
}

/* 品牌起点 */
.page-about .about-split {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
}

.page-about .about-split__main p {
  margin: 0 0 1.05rem;
  font-size: 0.98rem;
  line-height: 1.9;
  color: rgba(242, 239, 230, 0.9);
}

.page-about .about-split__main p:last-child {
  margin-bottom: 0;
}

.page-about .about-split__main .num {
  font-family: var(--font-mono);
  color: var(--cyan);
  font-weight: 700;
}

.page-about .about-split__aside {
  display: grid;
  gap: 1.1rem;
  align-content: start;
}

.page-about .media-frame {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--about-cyan-line);
  background:
    repeating-linear-gradient(135deg, rgba(63, 242, 198, 0.06) 0 2px, transparent 2px 9px),
    var(--turf);
}

.page-about .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .media-frame--portrait img {
  aspect-ratio: 3 / 4;
}

.page-about .media-frame--wide img {
  aspect-ratio: 2 / 1;
}

.page-about .about-note {
  position: relative;
  padding: 1.15rem 1.1rem 1.2rem;
  background: var(--deep);
  border: 1px solid var(--about-cyan-line);
  box-shadow: 7px 7px 0 rgba(255, 122, 61, 0.16), 0 16px 34px rgba(0, 0, 0, 0.34);
}

.page-about .about-note--plain {
  box-shadow: 7px 7px 0 rgba(63, 242, 198, 0.14);
}

.page-about .about-note__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: -0.02em;
}

.page-about .about-note p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: rgba(242, 239, 230, 0.86);
}

/* 阶段历程 */
.page-about .about-era {
  display: grid;
  gap: clamp(1.2rem, 3vw, 2.2rem);
}

.page-about .about-era__spine {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scrollbar-width: thin;
}

.page-about .about-era__tab {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.18rem;
  padding: 0.6rem 0.9rem;
  background: transparent;
  border: 1px solid var(--about-hair);
  border-radius: 2px;
  color: var(--mist);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}

.page-about .about-era__year {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--mist);
  transition: color var(--fast) var(--ease);
}

.page-about .about-era__name {
  font-size: 0.78rem;
  white-space: nowrap;
  letter-spacing: 0.03em;
}

.page-about .about-era__tab[aria-selected="true"] {
  border-color: var(--cyan);
  background: rgba(63, 242, 198, 0.12);
  color: var(--warm);
}

.page-about .about-era__tab[aria-selected="true"] .about-era__year {
  color: var(--cyan);
}

.page-about .about-era__tab:hover,
.page-about .about-era__tab:focus-visible {
  border-color: var(--cyan);
  color: var(--warm);
}

.page-about .about-era__panelinner {
  padding: clamp(1.1rem, 3vw, 1.7rem);
  border: 1px solid var(--about-cyan-line);
  background: var(--about-card);
  border-left: 3px solid var(--cyan);
}

.page-about .about-era__panelinner h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.12rem, 3vw, 1.45rem);
  line-height: 1.35;
  color: var(--warm);
}

.page-about .about-era__panelinner p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.9;
  color: rgba(242, 239, 230, 0.88);
}

.page-about .about-era__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  margin: 1.1rem 0 0;
  padding: 0.85rem 0 0;
  list-style: none;
  border-top: 1px dashed var(--about-hair);
}

.page-about .about-era__facts li {
  font-size: 0.8rem;
  color: var(--mist);
  letter-spacing: 0.02em;
}

.page-about .about-era__facts .num {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--amber);
  margin-right: 0.2rem;
}

/* 团队 */
.page-about .about-crew__figure {
  margin-bottom: clamp(1.2rem, 3vw, 1.9rem);
}

.page-about .about-crew {
  display: grid;
  gap: 0.9rem;
}

.page-about .about-crew__card {
  position: relative;
  padding: 1.1rem 1.1rem 1.15rem;
  background: linear-gradient(160deg, var(--turf), var(--field));
  border: 1px solid var(--about-hair);
  border-top: 2px solid var(--about-cyan-line);
  transition: border-color var(--fast) var(--ease), transform var(--fast) var(--ease);
}

.page-about .about-crew__card:hover,
.page-about .about-crew__card:focus-within {
  border-top-color: var(--cyan);
  transform: translateY(-3px);
}

.page-about .about-crew__role {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-crew__lead {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--warm);
}

.page-about .about-crew__more {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height var(--slow) var(--ease), opacity var(--fast) var(--ease), margin-top var(--fast) var(--ease);
}

.page-about .about-crew__more p {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.85;
  color: var(--mist);
  border-left: 2px solid var(--about-cyan-line);
  padding-left: 0.8rem;
}

.page-about .about-crew__card:hover .about-crew__more,
.page-about .about-crew__card:focus-within .about-crew__more,
.page-about .about-crew__card:focus .about-crew__more {
  max-height: 16rem;
  opacity: 1;
  margin-top: 0.85rem;
}

/* 合作 */
.page-about .about-partners {
  margin-top: clamp(1.2rem, 3vw, 1.8rem);
}

.page-about .about-partners__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.page-about .about-partners__tab {
  padding: 0.45rem 0.95rem;
  font-family: inherit;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--mist);
  background: transparent;
  border: 1px solid var(--about-hair);
  border-radius: 999px;
  cursor: pointer;
  transition: color var(--fast) var(--ease), background var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-about .about-partners__tab:hover,
.page-about .about-partners__tab:focus-visible {
  color: var(--warm);
  border-color: var(--cyan);
}

.page-about .about-partners__tab[aria-selected="true"] {
  color: var(--night);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
}

.page-about .about-partners__group {
  padding: 1.15rem 1.15rem 1.25rem;
  border: 1px dashed var(--about-cyan-line);
  background: rgba(7, 19, 15, 0.4);
}

.page-about .about-partners__group h3 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.05rem, 2.8vw, 1.3rem);
  color: var(--warm);
  line-height: 1.4;
}

.page-about .about-partners__group p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.9;
  color: rgba(242, 239, 230, 0.86);
}

.page-about .about-tagwall {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: clamp(1.3rem, 3vw, 2rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tagwall li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.42rem 0.8rem;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  color: var(--warm);
  background: var(--turf);
  border: 1px solid var(--about-cyan-line);
  border-radius: 2px;
}

.page-about .about-tagwall__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
  display: inline-block;
}

/* 服务 */
.page-about .about-service {
  display: grid;
  gap: clamp(1.4rem, 3.5vw, 2.4rem);
}

.page-about .about-service__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-service__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  padding: 1rem;
  background: var(--night);
}

.page-about .about-service__num {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.04em;
}

.page-about .about-service__item p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.9;
  color: rgba(242, 239, 230, 0.88);
}

.page-about .about-service__aside {
  display: grid;
  gap: 1.1rem;
  align-content: start;
}

/* 收束 */
.page-about .about-cta {
  border-top: 1px solid var(--about-cyan-line);
  padding-top: clamp(1.6rem, 4vw, 2.6rem);
}

.page-about .about-cta__inner {
  position: relative;
  padding: clamp(1.2rem, 3.5vw, 2.2rem);
  background:
    linear-gradient(120deg, rgba(63, 242, 198, 0.14), transparent 55%),
    var(--deep);
  border: 1px solid var(--about-cyan-line);
  box-shadow: 10px 10px 0 rgba(255, 122, 61, 0.14);
}

.page-about .about-cta h2 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.6vw, 2.3rem);
  line-height: 1.2;
  color: var(--warm);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 34em;
  font-size: 0.94rem;
  line-height: 1.85;
  color: rgba(242, 239, 230, 0.85);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.2rem;
}

/* 响应式 */
@media (min-width: 640px) {
  .page-about .about-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-crew {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-about .about-hero__aside {
    padding-top: 1.4rem;
    border-top-width: 2px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-about .about-service {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-crew__card:nth-child(even) {
    margin-top: 1.4rem;
  }
}

@media (min-width: 960px) {
  .page-about .about-era {
    grid-template-columns: minmax(0, 0.62fr) minmax(0, 1.5fr);
    align-items: start;
  }

  .page-about .about-era__spine {
    position: sticky;
    top: 1.5rem;
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--about-hair);
  }

  .page-about .about-era__tab {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 0.85rem 0.5rem 0.85rem 1.1rem;
    margin-left: -1px;
    background: transparent;
  }

  .page-about .about-era__tab[aria-selected="true"] {
    border-left-color: var(--cyan);
    border-top-color: transparent;
    background: linear-gradient(90deg, rgba(63, 242, 198, 0.14), transparent 72%);
  }

  .page-about .about-era__name {
    white-space: normal;
  }
}

@media (min-width: 1080px) {
  .page-about .about-index__list {
    overflow: visible;
  }
}

@media (hover: none) {
  .page-about .about-crew__more {
    max-height: none;
    opacity: 1;
    margin-top: 0.85rem;
  }

  .page-about .about-crew__card:hover {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-crew__card,
  .page-about .about-crew__more,
  .page-about .about-era__tab,
  .page-about .about-index__list a {
    transition: none;
  }

  .page-about .about-crew__card:hover,
  .page-about .about-crew__card:focus-within {
    transform: none;
  }
}