.page-about {
  --ab-pad: clamp(56px, 9vw, 132px);
  --ab-line: 1px solid var(--gw-brick-300);
  --ab-dark-line: 1px solid var(--gw-brick-700);
}

/* ------------------------------------------------------------------ 面包屑与首屏 */

.page-about .ab-crumb {
  margin-bottom: clamp(24px, 4vw, 48px);
}

.page-about .ab-eyebrow {
  display: block;
  margin: 0 0 18px;
  color: var(--gw-orange-deep);
}

.page-about .ab-eyebrow--light {
  color: var(--gw-orange);
}

.page-about .ab-hero {
  padding-block: clamp(28px, 5vw, 72px) clamp(40px, 6vw, 88px);
  background: var(--gw-paper);
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .ab-hero__title {
  margin: 0 0 24px;
  font-size: clamp(36px, 6.6vw, 92px);
  font-weight: 200;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--gw-ink);
  max-width: 18ch;
}

.page-about .ab-hero__lede {
  margin: 0;
  max-width: 34em;
  color: var(--gw-brick-700);
}

.page-about .ab-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  border: 2px solid var(--gw-ink);
  box-shadow: var(--gw-shadow);
  background: var(--gw-surface);
  height: fit-content;
}

.page-about .ab-hero__fact {
  padding: 18px 20px 20px;
  border-bottom: var(--ab-line);
  border-right: var(--ab-line);
}

.page-about .ab-hero__fact:nth-child(2n) {
  border-right: 0;
}

.page-about .ab-hero__fact:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.page-about .ab-hero__fact dt {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gw-brick-700);
  margin-bottom: 8px;
}

.page-about .ab-hero__fact dd {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gw-ink);
}

.page-about .ab-hero__figure {
  margin: clamp(36px, 6vw, 72px) 0 0;
}

@media (min-width: 960px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }
}

/* ------------------------------------------------------------------ 章节导航 */

.page-about .ab-nav {
  position: sticky;
  top: var(--gw-header-h);
  z-index: 5;
  background: var(--gw-brick-900);
  border-top: 3px solid var(--gw-orange);
  border-bottom: var(--ab-dark-line);
}

.page-about .ab-nav__list {
  display: flex;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .ab-nav__list::-webkit-scrollbar {
  display: none;
}

.page-about .ab-nav__link {
  display: block;
  flex: 0 0 auto;
  padding: 14px 16px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--gw-brick-300);
  text-decoration: none;
  white-space: nowrap;
  border-right: var(--ab-dark-line);
  transition: color 160ms var(--gw-ease), background-color 160ms var(--gw-ease);
}

.page-about .ab-nav__link:hover,
.page-about .ab-nav__link:focus-visible {
  color: var(--gw-paper);
  background: var(--gw-brick-700);
}

/* ------------------------------------------------------------------ 通用区块 */

.page-about .ab-block {
  padding-block: var(--ab-pad);
  border-top: var(--ab-line);
  background: var(--gw-paper);
}

.page-about .ab-block--surface {
  background: var(--gw-surface);
}

.page-about .ab-block--dark {
  background: var(--gw-brick-900);
  color: var(--gw-paper);
  border-top: var(--ab-dark-line);
}

.page-about .ab-block__head {
  margin-bottom: clamp(32px, 5vw, 64px);
}

.page-about .ab-block__title {
  margin: 0;
  font-size: clamp(30px, 5vw, 68px);
  font-weight: 200;
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--gw-ink);
  max-width: 22ch;
}

.page-about .ab-block--dark .ab-block__title {
  color: var(--gw-paper);
}

.page-about .ab-block__lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--gw-brick-700);
}

.page-about .ab-block--dark .ab-block__lede {
  color: var(--gw-brick-300);
}

.page-about .ab-prose {
  margin: 0 0 20px;
  font-size: 17px;
  line-height: 1.78;
  color: var(--gw-brick-700);
  max-width: 68ch;
}

.page-about .ab-prose:last-child {
  margin-bottom: 0;
}

/* ------------------------------------------------------------------ 01 命名由来 */

.page-about .ab-name__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
  margin-bottom: clamp(40px, 6vw, 72px);
}

.page-about .ab-prose--light {
  color: var(--gw-brick-300);
}

.page-about .ab-quote {
  margin: 0;
  padding: clamp(24px, 3vw, 40px);
  border: 3px solid var(--gw-orange);
  background: transparent;
  box-shadow: 8px 8px 0 rgba(240, 86, 27, 0.18);
}

.page-about .ab-quote p {
  margin: 0 0 14px;
  font-size: clamp(26px, 3.4vw, 42px);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--gw-orange);
}

.page-about .ab-quote cite {
  font-style: normal;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--gw-brick-300);
}

@media (min-width: 960px) {
  .page-about .ab-name__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.page-about .ab-principles {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 10px;
}

.page-about .ab-principles__card {
  flex: 0 0 min(310px, 80vw);
  scroll-snap-align: start;
  padding: 26px 24px 28px;
  border: 2px solid var(--gw-brick-700);
  border-top: 3px solid var(--gw-orange);
  background: rgba(245, 241, 234, 0.04);
  transition: border-color 160ms var(--gw-ease), transform 160ms var(--gw-ease);
}

.page-about .ab-principles__card:hover {
  border-color: var(--gw-orange);
  transform: translateY(-3px);
}

.page-about .ab-principles__idx {
  display: block;
  margin-bottom: 14px;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--gw-orange);
}

.page-about .ab-principles__card h3 {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 700;
  color: var(--gw-paper);
}

.page-about .ab-principles__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gw-brick-300);
}

/* ------------------------------------------------------------------ 02 团队 */

.page-about .ab-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

@media (min-width: 960px) {
  .page-about .ab-team__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }
}

.page-about .ab-team__col--panel {
  padding: clamp(26px, 3vw, 40px);
  border: 3px solid var(--gw-ink);
  box-shadow: var(--gw-shadow);
  background: var(--gw-surface);
}

.page-about .ab-team__num {
  display: block;
  font-size: clamp(56px, 9vw, 108px);
  font-weight: 300;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--gw-orange);
}

.page-about .ab-team__col--panel h3 {
  margin: 12px 0 16px;
  font-size: 22px;
  font-weight: 700;
  color: var(--gw-ink);
}

.page-about .ab-team__col--panel p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--gw-brick-700);
}

.page-about .ab-team__meta {
  padding-top: 16px;
  border-top: var(--ab-line);
  font-size: 15px;
  color: var(--gw-brick-700);
}

/* ------------------------------------------------------------------ 03 数据流程 */

.page-about .ab-flow {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.page-about .ab-flow__plot {
  display: none;
}

.page-about .ab-flow__plot svg {
  display: block;
  width: 100%;
  height: 90px;
}

.page-about .ab-flow__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--gw-ink);
}

.page-about .ab-flow__step {
  position: relative;
  padding: 26px 0 28px;
  border-bottom: var(--ab-line);
}

.page-about .ab-flow__step > .gw-mono:first-child {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gw-orange-deep);
}

.page-about .ab-flow__step h3 {
  margin: 0 0 10px;
  font-size: 21px;
  font-weight: 700;
  color: var(--gw-ink);
}

.page-about .ab-flow__step p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--gw-brick-700);
  max-width: 60ch;
}

.page-about .ab-flow__step > .gw-mono:last-child {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--gw-orange);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gw-orange-deep);
}

@media (min-width: 960px) {
  .page-about .ab-flow__plot {
    display: block;
    margin-bottom: 8px;
  }

  .page-about .ab-flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-top: 0;
  }

  .page-about .ab-flow__step {
    padding: 22px 22px 26px;
    border-bottom: 0;
    border-left: var(--ab-line);
  }

  .page-about .ab-flow__step:first-child {
    border-left: 0;
  }
}

/* ------------------------------------------------------------------ 04 版本历程 */

.page-about .ab-years__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--ab-dark-line);
}

.page-about .ab-years__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: clamp(24px, 3vw, 36px) 0;
  border-bottom: var(--ab-dark-line);
  outline: none;
}

.page-about .ab-years__year {
  font-size: clamp(48px, 9vw, 120px);
  font-weight: 200;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--gw-orange);
}

.page-about .ab-years__body h3 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--gw-paper);
}

.page-about .ab-years__body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--gw-brick-300);
  max-width: 62ch;
}

.page-about .ab-years__tip {
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--gw-brick-300);
}

.page-about .ab-years__item:hover .ab-years__tip,
.page-about .ab-years__item:focus-visible .ab-years__tip {
  color: var(--gw-orange);
}

.page-about .ab-years__note {
  margin: clamp(32px, 4vw, 48px) 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--gw-brick-300);
  max-width: 68ch;
}

@media (min-width: 960px) {
  .page-about .ab-years__item {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr) minmax(0, 3fr);
    gap: clamp(20px, 3vw, 40px);
    align-items: baseline;
  }
}

/* ------------------------------------------------------------------ 05 覆盖与本地 */

.page-about .ab-cover__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
  margin-bottom: clamp(40px, 6vw, 72px);
}

.page-about .ab-cover__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border: 2px solid var(--gw-ink);
  box-shadow: var(--gw-shadow);
  background: var(--gw-surface);
}

.page-about .ab-cover__stats .gw-stat {
  padding: 20px 18px 22px;
  border-right: var(--ab-line);
}

.page-about .ab-cover__stats .gw-stat:last-child {
  border-right: 0;
}

@media (min-width: 960px) {
  .page-about .ab-cover__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

/* ------------------------------------------------------------------ 06 合作与资质 */

.page-about .ab-eco__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
}

@media (min-width: 960px) {
  .page-about .ab-eco__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ------------------------------------------------------------------ 07 联系我们 */

.page-about .ab-talk__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-about .ab-talk__hours {
  margin: 18px 0 0;
  font-size: 15px;
  color: var(--gw-brick-300);
}

.page-about .ab-talk__aside {
  padding: clamp(24px, 3vw, 36px);
  border: 3px solid var(--gw-orange);
  background: rgba(245, 241, 234, 0.04);
}

.page-about .ab-talk__aside h3 {
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 700;
  color: var(--gw-paper);
}

.page-about .ab-talk__list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-about .ab-talk__list li {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: var(--ab-dark-line);
  font-size: 15px;
  line-height: 1.7;
  color: var(--gw-brick-300);
}

.page-about .ab-talk__aside p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gw-brick-300);
}

.page-about .ab-talk__more {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: clamp(40px, 6vw, 72px);
  border-top: var(--ab-dark-line);
}

.page-about .ab-talk__more a {
  display: block;
  padding: 22px 0;
  border-bottom: var(--ab-dark-line);
  text-decoration: none;
  transition: color 160ms var(--gw-ease);
}

.page-about .ab-talk__more a:hover,
.page-about .ab-talk__more a:focus-visible {
  color: var(--gw-orange);
}

.page-about .ab-talk__more-text {
  display: block;
  margin-top: 8px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--gw-brick-300);
}

@media (min-width: 960px) {
  .page-about .ab-talk__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .page-about .ab-talk__more {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 3vw, 40px);
  }

  .page-about .ab-talk__more a {
    border-bottom: 0;
  }
}
<<<END>>>