.page-about {
  background: var(--ink);
  color: var(--paper);
}

.page-about .about-hero {
  padding: 20px 0 40px;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-hero__kicker {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink);
  background: var(--lime);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 8.2vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero__hl {
  display: block;
  color: var(--lime);
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(242, 245, 238, 0.86);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-hero__fact {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 5px 10px;
  border: 1px solid var(--lime-line);
  color: var(--lime-soft);
}

.page-about .about-hero__actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

.page-about .about-hero__aside .media {
  margin: 0;
}

.page-about .about-chapter {
  display: grid;
  gap: 18px;
  padding: 40px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-chapter__rail {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-chapter__num {
  font-family: var(--font-mono);
  font-size: 48px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--lime);
  opacity: 0.6;
}

.page-about .about-chapter__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--moss);
}

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

.page-about .about-chapter__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 5vw, 34px);
  line-height: 1.16;
  color: var(--paper);
}

.page-about .about-chapter__p {
  margin: 0 0 14px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(242, 245, 238, 0.85);
}

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

.page-about .about-note {
  margin-top: 18px;
  padding-left: 14px;
  border-left: 2px solid var(--lime-line);
  font-size: 14px;
  color: var(--moss);
}

/* 准则 */
.page-about .about-principles {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-principle {
  display: grid;
  gap: 8px;
  padding: 18px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease),
    background 200ms var(--ease);
}

.page-about .about-principle__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--moss);
  transition: color 200ms var(--ease);
}

.page-about .about-principle__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-principle__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(242, 245, 238, 0.82);
}

.page-about .about-principle:hover,
.page-about .about-principle:focus-within {
  transform: translateY(-3px);
  border-color: var(--lime-line);
  background: rgba(200, 255, 61, 0.06);
}

.page-about .about-principle:hover .about-principle__num,
.page-about .about-principle:focus-within .about-principle__num {
  color: var(--lime);
}

/* 时间轴 */
.page-about .about-timeline-figure {
  margin: 24px 0 28px;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 4px 0 4px 18px;
  border-left: 1px dashed var(--line-strong);
  display: grid;
  gap: 14px;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 16px 18px;
  background: rgba(242, 245, 238, 0.045);
  border: 1px solid var(--line);
  box-shadow: 5px 5px 0 rgba(200, 255, 61, 0.09);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 22px;
  width: 9px;
  height: 9px;
  background: var(--amber);
  transform: rotate(45deg);
  transition: transform 200ms var(--ease), background 200ms var(--ease);
}

.page-about .about-timeline__item.is-major::before {
  left: -24px;
  width: 11px;
  height: 11px;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(200, 255, 61, 0.16);
}

.page-about .about-timeline__item:hover,
.page-about .about-timeline__item:focus-visible {
  transform: translateX(4px);
  border-color: var(--lime-line);
  outline: none;
}

.page-about .about-timeline__item:focus-visible {
  box-shadow: 0 0 0 2px var(--lime), 5px 5px 0 rgba(200, 255, 61, 0.09);
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-visible::before {
  transform: rotate(45deg) scale(1.3);
}

.page-about .about-timeline__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 6px;
}

.page-about .about-timeline__badge {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  color: var(--ink);
  background: var(--lime-soft);
}

.page-about .about-timeline__item.is-major .about-timeline__badge {
  background: var(--lime);
}

.page-about .about-timeline__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-timeline__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(242, 245, 238, 0.82);
}

/* 团队 */
.page-about .about-team {
  display: grid;
  gap: 22px;
  margin-top: 20px;
}

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

.page-about .about-team__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-team__item {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--lime-line);
}

.page-about .about-team__role {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--lime-soft);
}

.page-about .about-team__desc {
  font-size: 15px;
  line-height: 1.68;
  color: rgba(242, 245, 238, 0.82);
}

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

/* 指标 */
.page-about .about-metrics {
  list-style: none;
  margin: 22px 0 20px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-metric {
  background: var(--ink-2);
  padding: 18px 16px;
}

.page-about .about-metric__num {
  display: inline-block;
  margin-bottom: 8px;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1.15;
  color: var(--paper);
  border-bottom: 2px solid var(--lime);
}

.page-about .about-metric__label {
  display: block;
  font-size: 13px;
  line-height: 1.6;
  color: var(--moss);
}

/* 收束 */
.page-about .about-next {
  margin-top: 30px;
  padding: 22px 20px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 4px solid var(--lime);
  display: grid;
  gap: 14px;
}

.page-about .about-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-next .about-chapter__p {
  margin: 0;
  font-size: 15px;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-next__link {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 9px 15px;
  color: var(--paper);
  text-decoration: none;
  border: 1px solid var(--line-strong);
  transition: color 200ms var(--ease), border-color 200ms var(--ease),
    background 200ms var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

@media (min-width: 720px) {
  .page-about .about-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 34px 0 56px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .about-hero__title {
    font-size: clamp(48px, 5.2vw, 66px);
  }

  .page-about .about-chapter {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 48px;
    padding: 56px 0;
  }

  .page-about .about-chapter__rail {
    position: sticky;
    top: 96px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .page-about .about-chapter__num {
    font-size: 64px;
  }

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

  .page-about .about-team {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-principle,
  .page-about .about-timeline__item,
  .page-about .about-timeline__item::before,
  .page-about .about-next__link {
    transition: none;
  }

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