.page-about {
  --about-rail-w: 216px;
  --about-line: var(--line-300);
  background: var(--paper-050);
  color: var(--seed-900);
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(64%, 560px);
  height: 84%;
  background: var(--kiwi-100);
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: 12px;
  bottom: 18px;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  border: 1px solid rgba(111, 191, 58, .45);
  background:
    radial-gradient(circle at 30% 32%, var(--seed-900) 0 3px, transparent 3.5px),
    radial-gradient(circle at 64% 22%, var(--seed-900) 0 2.5px, transparent 3px),
    radial-gradient(circle at 42% 68%, var(--seed-900) 0 3px, transparent 3.5px),
    radial-gradient(circle at 74% 60%, var(--seed-900) 0 2.5px, transparent 3px);
  opacity: .18;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
  padding: 24px 0 48px;
}

.page-about .about-hero__stamp {
  display: inline-block;
  background: var(--sun-400);
  color: var(--seed-900);
  font-size: var(--fs-12);
  letter-spacing: .05em;
  padding: 5px 10px;
}

.page-about .about-hero__title {
  margin: 16px 0 18px;
  font-size: clamp(36px, 9vw, 88px);
  line-height: .98;
  letter-spacing: -.02em;
  font-weight: 900;
}

.page-about .about-hero__title em {
  display: block;
  font-style: normal;
  font-weight: 200;
  color: var(--kiwi-700);
  letter-spacing: -.01em;
}

.page-about .about-hero__lead {
  max-width: 34em;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--text-600);
  margin: 0;
}

.page-about .about-hero__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 20px 0 0;
  font-size: var(--fs-14);
  color: var(--text-600);
}

.page-about .about-hero__links a {
  color: var(--kiwi-700);
  text-decoration: none;
  border-bottom: 2px solid var(--kiwi-500);
  padding-bottom: 2px;
  min-height: 24px;
}

.page-about .about-hero__links a:hover {
  background: var(--kiwi-100);
}

.page-about .about-hero__board {
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  align-self: end;
}

.page-about .about-hero__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--paper-050);
}

.page-about .about-hero__cell--key {
  background: var(--kiwi-500);
}

.page-about .about-hero__label {
  font-size: var(--fs-12);
  letter-spacing: .04em;
  color: var(--text-600);
}

.page-about .about-hero__cell--key .about-hero__label {
  color: var(--seed-900);
}

.page-about .about-hero__value {
  font-size: 40px;
  font-weight: 200;
  line-height: 1;
  letter-spacing: -.02em;
}

.page-about .about-hero__value small {
  font-size: var(--fs-14);
  font-weight: 500;
  margin-left: 4px;
}

.page-about .about-hero__value--sm {
  font-size: var(--fs-22);
  font-weight: 500;
  letter-spacing: 0;
}

.page-about .about-body {
  display: grid;
  padding-bottom: 56px;
}

.page-about .about-rail {
  border-top: 1px solid var(--about-line);
  padding-top: 14px;
  margin-bottom: 8px;
}

.page-about .about-rail__title {
  margin: 0 0 10px;
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--text-600);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
  font-size: var(--fs-14);
  color: var(--seed-900);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .about-rail__link .mono {
  font-size: var(--fs-12);
  color: var(--kiwi-700);
}

.page-about .about-rail__link:hover {
  color: var(--kiwi-700);
  border-bottom-color: var(--kiwi-500);
}

.page-about .about-rail__link[aria-current="true"] {
  color: var(--kiwi-700);
  border-bottom-color: var(--kiwi-500);
}

.page-about .about-main {
  min-width: 0;
}

.page-about .section {
  padding: 34px 0 10px;
  border-top: 1px solid var(--about-line);
}

.page-about .section__lead {
  max-width: 36em;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--text-600);
  margin: 0 0 22px;
}

/* 时间线 */
.page-about .timeline {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .timeline__item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
}

.page-about .timeline__year {
  font-size: var(--fs-22);
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--seed-900);
  padding-top: 2px;
}

.page-about .timeline__body {
  position: relative;
  border-left: 1px solid var(--about-line);
  padding: 0 0 26px 22px;
  transition: background var(--dur) var(--ease);
}

.page-about .timeline__body::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--seed-900);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .timeline__item:last-child .timeline__body {
  padding-bottom: 6px;
}

.page-about .timeline__item:hover .timeline__body::before,
.page-about .timeline__item:focus-within .timeline__body::before {
  background: var(--kiwi-500);
  transform: scale(1.35);
}

.page-about .timeline__item:hover .timeline__title,
.page-about .timeline__item:focus-within .timeline__title {
  color: var(--kiwi-700);
}

.page-about .timeline__title {
  margin: 0 0 6px;
  font-size: var(--fs-17);
  font-weight: 500;
  line-height: 1.5;
}

.page-about .timeline__text {
  margin: 0;
  max-width: 36em;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-600);
}

/* 媒体 */
.page-about .about-media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--about-line);
}

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

.page-about .about-media--wide {
  clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
  margin-bottom: 20px;
}

.page-about .about-media--wide img {
  aspect-ratio: 12 / 7;
}

.page-about .about-media__cap {
  display: block;
  padding: 10px 14px;
  font-size: var(--fs-12);
  letter-spacing: .03em;
  color: var(--text-600);
  background: var(--kiwi-100);
  border-top: 1px solid var(--about-line);
}

/* 三组分工 */
.page-about .crew {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .crew__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 10px 18px 10px;
  border-bottom: 1px solid var(--about-line);
  transition: background var(--dur) var(--ease);
}

.page-about .crew__item:hover {
  background: var(--kiwi-100);
}

.page-about .crew__num {
  font-size: var(--fs-14);
  color: var(--kiwi-700);
  padding-top: 3px;
}

.page-about .crew__title {
  margin: 0 0 6px;
  font-size: var(--fs-17);
  font-weight: 500;
}

.page-about .crew__text {
  margin: 0;
  max-width: 36em;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-600);
}

/* 复核流程 */
.page-about .process {
  display: grid;
  gap: 20px;
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid var(--about-line);
}

.page-about .process__title {
  margin: 0 0 8px;
  font-size: var(--fs-22);
  font-weight: 500;
  line-height: 1.4;
}

.page-about .process__text {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-600);
}

.page-about .about-media--side {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 6% 92%);
}

.page-about .about-media--side img {
  aspect-ratio: 9 / 6;
}

.page-about .process__note {
  margin: 22px 0 0;
  padding: 14px 16px;
  background: var(--kiwi-100);
  border-left: 3px solid var(--kiwi-500);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--seed-900);
}

/* 数据墙 */
.page-about .stat-wall {
  position: relative;
  overflow: hidden;
  background: var(--seed-900);
  color: var(--paper-050);
  padding: 18px;
}

.page-about .stat-wall__texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  opacity: .14;
  z-index: 0;
}

.page-about .stat-wall__grid {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(201, 210, 190, .22);
}

.page-about .stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 14px;
  background: var(--seed-900);
}

.page-about .stat--wide {
  grid-column: span 2;
}

.page-about .stat__label {
  font-size: var(--fs-12);
  letter-spacing: .05em;
  color: rgba(233, 245, 220, .68);
}

.page-about .stat__num {
  font-size: clamp(40px, 11vw, 76px);
  font-weight: 200;
  line-height: .9;
  letter-spacing: -.03em;
  color: var(--paper-050);
}

.page-about .stat--wide .stat__num {
  color: var(--kiwi-500);
}

.page-about .stat__num small {
  font-size: var(--fs-14);
  font-weight: 500;
  letter-spacing: 0;
  margin-left: 6px;
  color: rgba(233, 245, 220, .82);
}

/* 伙伴 */
.page-about .partner-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .partner-grid__cell {
  background: var(--paper-050);
  padding: 18px 16px;
  transition: background var(--dur) var(--ease);
}

.page-about .partner-grid__cell:hover {
  background: var(--kiwi-100);
}

.page-about .partner-grid__title {
  margin: 0 0 8px;
  font-size: var(--fs-17);
  font-weight: 500;
  padding-left: 12px;
  border-left: 3px solid var(--kiwi-500);
}

.page-about .partner-grid__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-600);
}

/* 三条坚持 */
.page-about .pledges {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .pledge {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--about-line);
}

.page-about .pledge:last-child {
  border-bottom: 1px solid var(--about-line);
}

.page-about .pledge__num {
  font-size: var(--fs-22);
  font-weight: 500;
  color: var(--kiwi-500);
  line-height: 1.2;
}

.page-about .pledge__title {
  margin: 0 0 6px;
  font-size: var(--fs-22);
  font-weight: 500;
  line-height: 1.35;
}

.page-about .pledge__text {
  margin: 0;
  max-width: 36em;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-600);
}

/* 收尾行动 */
.page-about .about-cta {
  display: grid;
  gap: 18px;
  margin-top: 34px;
  padding: 24px 20px;
  background: var(--kiwi-100);
  border-left: 6px solid var(--kiwi-500);
}

.page-about .about-cta__title {
  margin: 0 0 8px;
  font-size: var(--fs-22);
  font-weight: 500;
  line-height: 1.4;
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-600);
}

.page-about .about-cta__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.page-about .about-cta__links {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: var(--fs-14);
  color: var(--text-600);
}

.page-about .about-cta__links a {
  color: var(--kiwi-700);
  text-decoration: none;
  border-bottom: 1px solid var(--kiwi-500);
  padding-bottom: 1px;
}

.page-about .about-cta__links a:hover {
  background: var(--paper-050);
}

/* 断点 */
@media (min-width: 700px) {
  .page-about .about-body {
    grid-template-columns: 1fr;
  }

  .page-about .stat-wall {
    padding: 24px;
  }

  .page-about .stat-wall__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .process {
    grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 28px 26px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 296px;
    gap: 44px;
    align-items: end;
    padding: 40px 0 64px;
  }

  .page-about .about-hero__board {
    margin-bottom: 4px;
  }

  .page-about .section {
    padding-top: 46px;
  }

  .page-about .timeline__item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 20px;
  }

  .page-about .timeline__year {
    font-size: var(--fs-32);
    font-weight: 200;
  }

  .page-about .about-media--wide img {
    aspect-ratio: 12 / 6;
  }
}

@media (min-width: 1080px) {
  .page-about .about-body {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 52px;
  }

  .page-about .about-rail {
    position: sticky;
    top: 88px;
    align-self: start;
    border-top: 0;
    border-left: 1px solid var(--about-line);
    padding: 4px 0 0 18px;
    margin-bottom: 0;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 2px;
  }

  .page-about .about-rail__link {
    width: 100%;
  }

  .page-about .section:first-child {
    padding-top: 6px;
    border-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__body,
  .page-about .timeline__body::before,
  .page-about .crew__item,
  .page-about .partner-grid__cell {
    transition: none;
  }

  .page-about .timeline__item:hover .timeline__body::before,
  .page-about .timeline__item:focus-within .timeline__body::before {
    transform: none;
  }
}
<<<END>>