.page-about {
  --about-gap: clamp(56px, 8vw, 104px);
  --about-radius: 28px;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-about .page-shell {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: clamp(100px, 15vw, 148px) var(--page-pad) clamp(64px, 9vw, 104px);
}

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

.page-about .breadcrumb {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
}

.page-about .breadcrumb__link {
  color: var(--color-meadow-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease-out);
}

.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  border-bottom-color: var(--color-meadow);
}

.page-about .breadcrumb__sep {
  color: var(--color-line-strong);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(28px, 5vw, 44px);
  margin-bottom: var(--about-gap);
}

.page-about .about-hero__copy {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.page-about .about-hero__note {
  writing-mode: vertical-rl;
  margin: 6px 0 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--color-meadow-deep);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.page-about .eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--color-meadow);
  font-family: var(--font-mono);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-size: clamp(2.2rem, 6vw, 4.6rem);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--color-ink);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--color-meadow);
  position: relative;
}

.page-about .about-hero__title em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.06em;
  height: 0.28em;
  background: linear-gradient(90deg, var(--color-sand), rgba(232, 194, 122, 0));
  border-radius: var(--radius-pill);
  z-index: -1;
}

.page-about .about-hero__text .lede {
  margin: 0 0 26px;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-ink-soft);
}

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

.page-about .about-hero__visual {
  margin: 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  background: linear-gradient(160deg, rgba(15, 139, 109, 0.16), rgba(232, 194, 122, 0.3) 55%, rgba(91, 75, 255, 0.22));
  box-shadow: var(--shadow-soft);
}

.page-about .about-hero__visual img {
  width: 100%;
  height: clamp(240px, 46vw, 420px);
  object-fit: cover;
}

.page-about .about-hero__metrics {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-metric {
  background: rgba(255, 255, 255, 0.72);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-metric__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  font-weight: 700;
  color: var(--color-meadow-deep);
  line-height: 1;
}

.page-about .about-metric__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-ink-soft);
}

/* ---------- 章节通用 ---------- */
.page-about .about-flow {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-section {
  scroll-margin-top: 120px;
}

.page-about .about-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 18px;
  align-items: start;
  padding-bottom: 24px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--color-sand);
}

.page-about .about-title {
  margin: 0;
  font-size: clamp(1.5rem, 4.2vw, 2.5rem);
  line-height: 1.24;
  font-weight: 900;
  color: var(--color-ink);
}

.page-about .about-head__sub {
  margin: 10px 0 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--color-meadow-deep);
}

.page-about .about-head__aside {
  grid-column: 2;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  writing-mode: horizontal-tb;
}

/* ---------- 起源 ---------- */
.page-about .about-origin {
  display: grid;
  gap: 28px;
}

.page-about .about-origin__body p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-ink-soft);
}

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

.page-about .about-principles__item {
  background: #fff;
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-meadow);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s var(--ease-out), border-left-color 0.22s var(--ease-out);
}

.page-about .about-principles__item:hover,
.page-about .about-principles__item:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
  border-left-color: var(--color-amber);
}

.page-about .about-principles__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(15, 139, 109, 0.12);
  color: var(--color-meadow-deep);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 10px;
}

.page-about .about-principles__item h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--color-ink);
}

.page-about .about-principles__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-ink-soft);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline-wrap {
  display: grid;
  gap: 32px;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 4px 0 4px 30px;
  border-left: 2px solid var(--color-sand);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 26px;
  outline: none;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-meadow-deep);
  box-shadow: 0 0 0 4px var(--color-paper);
  transition: background 0.22s var(--ease-out), box-shadow 0.22s var(--ease-out);
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus::before,
.page-about .about-timeline__item:focus-within::before {
  background: var(--color-amber);
  box-shadow: 0 0 0 4px var(--color-paper), 0 0 0 7px rgba(255, 176, 32, 0.28);
}

.page-about .about-timeline__year {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-meadow);
}

.page-about .about-timeline__body h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--color-ink);
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--color-ink-soft);
}

.page-about .about-timeline__more {
  margin-top: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 14px;
  color: var(--color-meadow-deep);
  transition: max-height 0.3s var(--ease-out), opacity 0.24s var(--ease-out), margin-top 0.3s var(--ease-out);
}

.page-about .about-timeline__item:hover .about-timeline__more,
.page-about .about-timeline__item:focus .about-timeline__more,
.page-about .about-timeline__item:focus-within .about-timeline__more {
  max-height: 140px;
  opacity: 1;
  margin-top: 8px;
}

.page-about .about-timeline__figure {
  margin: 0;
  border-radius: var(--about-radius);
  background: linear-gradient(150deg, rgba(27, 36, 80, 0.92), rgba(38, 49, 105, 0.86) 60%, rgba(91, 75, 255, 0.72));
  padding: 22px;
  color: var(--color-paper);
  box-shadow: var(--shadow-soft);
}

.page-about .about-timeline__figure img {
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.page-about .about-timeline__figure figcaption {
  margin-top: 16px;
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: rgba(247, 248, 243, 0.82);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 16px;
  align-items: start;
}

.page-about .about-team__card {
  border-radius: var(--about-radius);
  padding: 26px 24px;
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s var(--ease-out);
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-team__num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 7vw, 3.4rem);
  font-weight: 700;
  line-height: 1;
}

.page-about .about-team__card h3 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
}

.page-about .about-team__card p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
}

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

.page-about .about-team__card--editor {
  background: var(--color-meadow-deep);
  color: rgba(247, 248, 243, 0.9);
}

.page-about .about-team__card--editor .about-team__num,
.page-about .about-team__card--editor h3 {
  color: var(--color-sand);
}

.page-about .about-team__card--tech {
  background: var(--color-sand);
  color: var(--color-ink);
}

.page-about .about-team__card--tech .about-team__num {
  color: var(--color-meadow-deep);
}

.page-about .about-team__card--service {
  background: #fff;
  border: 1px solid var(--color-line);
  color: var(--color-ink-soft);
}

.page-about .about-team__card--service .about-team__num,
.page-about .about-team__card--service h3 {
  color: var(--color-meadow);
}

.page-about .about-team__figure {
  margin: 20px 0 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  background: rgba(232, 194, 122, 0.28);
}

.page-about .about-team__figure img {
  width: 100%;
  height: clamp(200px, 40vw, 320px);
  object-fit: cover;
}

.page-about .about-team__figure figcaption {
  padding: 14px 20px 18px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}

/* ---------- 生态 ---------- */
.page-about .about-ecosystem {
  display: grid;
  gap: 24px;
}

.page-about .about-ecosystem__body p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-ink-soft);
}

.page-about .about-ecosystem__panel {
  background: linear-gradient(160deg, rgba(15, 139, 109, 0.1), rgba(232, 194, 122, 0.28));
  border-radius: var(--about-radius);
  padding: 24px 22px;
}

.page-about .about-ecosystem__panel-title {
  margin: 0 0 16px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--color-meadow-deep);
}

.page-about .about-cloud {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-cloud__tag {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.8);
  color: var(--color-ink-soft);
  border: 1px solid var(--color-line);
  transition: transform 0.2s var(--ease-out), background 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.page-about .about-cloud__tag:hover,
.page-about .about-cloud__tag:focus-visible {
  transform: translateY(-2px);
  background: var(--color-meadow);
  color: var(--color-paper);
  border-color: var(--color-meadow);
}

.page-about .about-cloud__tag--music,
.page-about .about-cloud__tag--city {
  font-size: 15px;
  padding: 10px 20px;
}

.page-about .about-cloud__tag--family {
  font-size: 13px;
  padding: 8px 14px;
}

.page-about .about-cloud__tag--all {
  background: var(--color-night);
  color: var(--color-sand);
  border-color: var(--color-night);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.page-about .about-cloud__tag--all:hover,
.page-about .about-cloud__tag--all:focus-visible {
  background: var(--color-amber);
  color: var(--color-ink);
  border-color: var(--color-amber);
}

.page-about .about-links {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-links__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--color-line);
  text-decoration: none;
  color: var(--color-ink);
  font-size: 15px;
  font-weight: 500;
  transition: transform 0.2s var(--ease-out), border-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.page-about .about-links__item:hover,
.page-about .about-links__item:focus-visible {
  transform: translateY(-2px);
  border-color: var(--color-meadow);
  box-shadow: var(--shadow-soft);
}

.page-about .about-links__arrow {
  color: var(--color-meadow);
  font-family: var(--font-mono);
  font-size: 18px;
}

/* ---------- 荣誉与视觉 ---------- */
.page-about .about-honor {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 24px 22px;
  border-radius: var(--about-radius);
  background: var(--color-night);
  color: rgba(247, 248, 243, 0.88);
  box-shadow: var(--shadow-soft);
}

.page-about .about-honor__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 5vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--color-amber);
}

.page-about .about-honor__text h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-sand);
}

.page-about .about-honor__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-swatch {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-swatch__item {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 4px;
  min-height: 108px;
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-line);
  transition: transform 0.22s var(--ease-out), box-shadow 0.22s var(--ease-out);
}

.page-about .about-swatch__item:hover,
.page-about .about-swatch__item:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.page-about .about-swatch__name {
  font-size: 14px;
  font-weight: 700;
}

.page-about .about-swatch__hex {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  opacity: 1;
  transition: opacity 0.2s var(--ease-out);
}

.page-about .about-swatch__item--meadow {
  background: #0F8B6D;
  color: var(--color-paper);
}

.page-about .about-swatch__item--sand {
  background: #E8C27A;
  color: var(--color-ink);
}

.page-about .about-swatch__item--amber {
  background: #FFB020;
  color: var(--color-ink);
}

.page-about .about-swatch__item--night {
  background: #1B2450;
  color: var(--color-paper);
}

.page-about .about-swatch__item--mint {
  background: #7FE3C0;
  color: var(--color-ink);
}

.page-about .about-swatch__item--paper {
  background: #F7F8F3;
  color: var(--color-ink);
}

.page-about .about-visual-note {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-ink-soft);
  padding-left: 16px;
  border-left: 3px solid var(--color-sand);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  border-radius: var(--radius-lg);
  padding: clamp(28px, 6vw, 52px);
  background: linear-gradient(140deg, var(--color-night), var(--color-night-soft) 62%, rgba(91, 75, 255, 0.86));
  color: var(--color-paper);
}

.page-about .about-cta__note {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--color-mint);
}

.page-about .about-cta__title {
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 4.6vw, 2.6rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--color-paper);
}

.page-about .about-cta__text {
  margin: 0 0 24px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 248, 243, 0.82);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .button:focus-visible,
.page-about .about-links__item:focus-visible,
.page-about .about-cloud__tag:focus-visible,
.page-about .breadcrumb__link:focus-visible {
  outline: 2px solid var(--color-amber);
  outline-offset: 3px;
}

.page-about .about-timeline__item:focus-visible {
  outline: 2px solid var(--color-amber);
  outline-offset: 6px;
  border-radius: 8px;
}

/* ---------- 媒体查询 ---------- */
@media (max-width: 759px) {
  .page-about .about-timeline__more {
    max-height: none;
    opacity: 1;
    margin-top: 8px;
  }

  .page-about .about-swatch__hex {
    opacity: 1;
  }
}

@media (min-width: 760px) {
  .page-about .about-hero__metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-metric {
    padding: 24px 26px;
  }

  .page-about .about-head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-about .about-head__aside {
    grid-column: 3;
    text-align: right;
    padding-bottom: 6px;
  }

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

  .page-about .about-ecosystem {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
    gap: 32px;
  }

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

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

  .page-about .about-swatch__item {
    min-height: 128px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    column-gap: 48px;
  }

  .page-about .about-hero__visual img {
    height: clamp(320px, 34vw, 440px);
  }

  .page-about .about-origin {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 44px;
    align-items: start;
  }

  .page-about .about-principles {
    grid-template-columns: 1fr;
  }

  .page-about .about-timeline-wrap {
    grid-template-columns: 1.35fr 0.65fr;
    gap: 44px;
    align-items: start;
  }

  .page-about .about-timeline__figure {
    position: sticky;
    top: 120px;
  }

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

  .page-about .about-team__card--tech {
    margin-top: 34px;
  }

  .page-about .about-team__card--service {
    margin-top: 68px;
  }

  .page-about .about-swatch {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-swatch__hex {
    opacity: 0;
  }

  .page-about .about-swatch__item:hover .about-swatch__hex,
  .page-about .about-swatch__item:focus-within .about-swatch__hex,
  .page-about .about-swatch__item:focus .about-swatch__hex {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-principles__item,
  .page-about .about-team__card,
  .page-about .about-swatch__item,
  .page-about .about-links__item,
  .page-about .about-cloud__tag,
  .page-about .about-timeline__more,
  .page-about .about-swatch__hex {
    transition: none;
  }

  .page-about .about-principles__item:hover,
  .page-about .about-team__card:hover,
  .page-about .about-swatch__item:hover,
  .page-about .about-links__item:hover,
  .page-about .about-cloud__tag:hover {
    transform: none;
  }
}

已在上方输出。