.page-about {
  --about-hair: rgba(143, 166, 181, .22);
  --about-hair-strong: rgba(56, 225, 214, .5);
  --about-wash: rgba(56, 225, 214, .07);
  --about-turf: rgba(31, 111, 92, .08);
  --about-num: clamp(30px, 4.6vw, 54px);
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  padding-top: 10px;
}

.page-about .about-hero__frame {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3.6vw, 48px);
  background-image:
    linear-gradient(180deg, var(--about-wash), transparent 55%),
    repeating-linear-gradient(115deg, var(--about-turf) 0 2px, transparent 2px 46px);
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--about-hair-strong) 0 1px, transparent 1px 30px);
  opacity: .7;
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
}

.page-about .about-hero__title {
  font-family: var(--f-head);
  font-size: clamp(34px, 6.2vw, 72px);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin: 14px 0 0;
  max-width: 15ch;
  color: var(--ice);
}

.page-about .about-hero__lede {
  margin-top: 18px;
  max-width: 58ch;
  color: var(--text);
}

.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 3.4vw, 46px);
  margin-top: clamp(24px, 3.4vw, 38px);
  padding-top: 18px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 96px;
}

.page-about .about-hero__stats .stat__num {
  font-family: var(--f-mono);
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1;
  color: var(--cyan);
  transform: skewX(-8deg);
}

.page-about .about-hero__stats .stat__unit {
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--cyan);
  opacity: .85;
}

.page-about .about-hero__stats .stat__label {
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--frost);
}

.page-about .about-hero__figure {
  border: 1px solid var(--about-hair);
  overflow: hidden;
}

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .78fr);
    align-items: end;
  }

  .page-about .about-hero__figure {
    margin-top: clamp(16px, 3.4vw, 52px);
  }
}

/* ---------- 横向主题带 ---------- */
.page-about .about-band {
  margin: clamp(26px, 4.6vw, 56px) 0;
  border-block: 1px solid var(--about-hair);
  background: linear-gradient(90deg, var(--about-wash), transparent 62%);
}

/* ---------- 通用栏目标题组 ---------- */
.page-about .about-section-head {
  max-width: 62ch;
}

.page-about .about-section-head__title {
  font-family: var(--f-head);
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -.015em;
  margin: 12px 0 0;
  color: var(--ice);
}

.page-about .about-section-head__lede {
  margin-top: 14px;
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- 起点 ---------- */
.page-about .about-origin__bento {
  margin-top: clamp(20px, 3.2vw, 36px);
}

.page-about .about-origin__why-title {
  font-family: var(--f-head);
  font-size: clamp(21px, 2.4vw, 28px);
  line-height: 1.24;
  margin: 0 0 14px;
  color: var(--ice);
}

.page-about .about-origin__why p {
  color: var(--text);
  font-size: 15.5px;
  line-height: 1.75;
  margin: 0 0 12px;
}

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

.page-about .about-slot {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-slot__idx {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--cyan);
}

.page-about .about-slot__title {
  font-family: var(--f-head);
  font-size: 18px;
  letter-spacing: .01em;
  margin: 0;
  color: var(--ice);
}

.page-about .about-slot p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--frost);
}

/* ---------- 版本切换 ---------- */
.page-about .about-rev__seg {
  margin: clamp(20px, 3vw, 30px) 0 clamp(16px, 2.4vw, 24px);
}

.page-about .about-rev__panel {
  padding: clamp(20px, 3vw, 36px);
}

.page-about .about-rev__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.page-about .about-rev__title {
  font-family: var(--f-head);
  font-size: clamp(20px, 2.4vw, 27px);
  line-height: 1.25;
  margin: 12px 0 12px;
  color: var(--ice);
}

.page-about .about-rev__grid p {
  margin: 0;
  color: var(--text);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-about .about-kv {
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-kv__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-kv__k {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--frost);
}

.page-about .about-kv__v {
  font-family: var(--f-mono);
  font-size: 14px;
  color: var(--cyan);
  text-align: right;
}

@media (min-width: 820px) {
  .page-about .about-rev__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  }
}

/* ---------- 数据校订 ---------- */
.page-about .about-audit__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 52px);
  align-items: center;
}

.page-about .about-audit__figure {
  margin: 0;
  border: 1px solid var(--about-hair);
  overflow: hidden;
}

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

.page-about .about-audit__copy > p {
  margin: 14px 0 0;
  color: var(--text);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-about .about-audit__steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  counter-reset: audit;
  display: grid;
  gap: 14px;
}

.page-about .about-audit__steps li {
  position: relative;
  counter-increment: audit;
  padding-left: 46px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text);
}

.page-about .about-audit__steps li::before {
  content: counter(audit, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
  padding-left: 7px;
  border-left: 2px solid var(--cyan);
}

.page-about .about-audit__stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(26px, 3.6vw, 44px);
}

.page-about .about-audit__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(18px, 2.4vw, 26px);
  border-top: 2px solid var(--cyan);
}

.page-about .about-audit__stat .stat__num {
  font-family: var(--f-mono);
  font-size: var(--about-num);
  line-height: 1;
  color: var(--ice);
  transform: skewX(-8deg);
}

.page-about .about-audit__stat .stat__unit {
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-about .about-audit__stat .stat__label {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--frost);
}

@media (min-width: 900px) {
  .page-about .about-audit__grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  }
}

@media (min-width: 720px) {
  .page-about .about-audit__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(22px, 3.2vw, 36px);
}

.page-about .about-team__card {
  padding: clamp(20px, 2.6vw, 28px);
}

.page-about .about-team__card--lead {
  background-image: linear-gradient(140deg, var(--about-wash), transparent 70%);
}

.page-about .about-team__num {
  display: block;
  font-family: var(--f-mono);
  font-size: clamp(44px, 7vw, 86px);
  line-height: .92;
  color: var(--cyan);
  transform: skewX(-8deg);
  margin-bottom: 12px;
}

.page-about .about-team__num--sm {
  font-size: clamp(30px, 4vw, 42px);
  color: var(--ice);
}

.page-about .about-team__title {
  font-family: var(--f-head);
  font-size: 19px;
  margin: 0 0 10px;
  color: var(--ice);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--text);
}

@media (min-width: 780px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-team__card--lead {
    grid-column: span 2;
  }
}

/* ---------- 协作网络 ---------- */
.page-about .about-network__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 44px);
  padding: clamp(24px, 4vw, 54px);
  background-image: repeating-linear-gradient(105deg, rgba(56, 225, 214, .05) 0 1px, transparent 1px 40px);
}

.page-about .about-network__num {
  font-family: var(--f-mono);
  font-size: clamp(72px, 15vw, 156px);
  line-height: .8;
  color: var(--cyan);
  transform: skewX(-8deg);
  letter-spacing: -.04em;
}

.page-about .about-network__copy p {
  margin: 14px 0 0;
  color: var(--text);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-about .about-network__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-about .about-network__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

.page-about .about-network__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 9px;
  height: 2px;
  background: var(--cyan);
  transform: skewX(-30deg);
}

.page-about .about-network__link {
  margin-top: 22px;
}

@media (min-width: 820px) {
  .page-about .about-network__inner {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
  }
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__list {
  list-style: none;
  margin: clamp(26px, 3.6vw, 44px) 0 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(56, 225, 214, .22) 62%, transparent);
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 38px;
}

.page-about .about-timeline__dot {
  position: absolute;
  left: 0;
  top: 24px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1px solid var(--about-hair);
  background: var(--deep);
  transition: border-color .3s var(--ease), background .3s var(--ease), box-shadow .3s var(--ease);
}

.page-about .about-timeline__item.is-in .about-timeline__dot {
  border-color: var(--cyan);
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(56, 225, 214, .13);
}

.page-about .about-timeline__card {
  padding: clamp(16px, 2.2vw, 24px);
}

.page-about .about-timeline__stamp {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-about .about-timeline__title {
  font-family: var(--f-head);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.28;
  margin: 0 0 8px;
  color: var(--ice);
}

.page-about .about-timeline__card p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--frost);
}

.page-about .about-timeline__figure {
  margin: clamp(30px, 4.4vw, 56px) 0 0;
  border: 1px solid var(--about-hair);
  overflow: hidden;
}

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

.page-about .about-timeline__foot {
  margin-top: clamp(22px, 3vw, 34px);
  padding-top: 20px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-timeline__foot p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text);
}

.page-about .about-timeline__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

@media (min-width: 900px) {
  .page-about .about-timeline__list::before {
    left: 50%;
  }

  .page-about .about-timeline__item {
    width: calc(50% - 34px);
    padding-left: 0;
  }

  .page-about .about-timeline__item:nth-child(even) {
    margin-left: calc(50% + 34px);
  }

  .page-about .about-timeline__dot {
    left: auto;
    right: -42px;
    top: 28px;
  }

  .page-about .about-timeline__item:nth-child(even) .about-timeline__dot {
    left: -42px;
    right: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__dot {
    transition: none;
  }
}
</final>