.page-about {
  --about-line: 1px solid var(--track);
  --about-gap: clamp(28px, 5vw, 56px);
  background: var(--cream);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 5vw, 64px) 0 clamp(20px, 3.4vw, 40px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: 22px;
}

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

.page-about .about-hero__title {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(34px, 7.4vw, 82px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 16px 0 0;
  max-width: 15ch;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--gold);
  display: block;
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--mist-deep);
}

.page-about .about-hero__note {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--mist);
  margin: 0;
  justify-self: start;
  display: none;
}

/* ---------- 通栏图 ---------- */
.page-about .about-banner {
  margin: 0;
  padding: 0;
  border-top: var(--about-line);
  border-bottom: var(--about-line);
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  height: clamp(200px, 30vw, 420px);
  object-fit: cover;
  max-width: 100%;
}

.page-about .about-banner .media-caption {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px 14px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist-deep);
}

/* ---------- 骨架 ---------- */
.page-about .about-body {
  padding-top: var(--about-gap);
  padding-bottom: var(--about-gap);
}

.page-about .about-rail {
  display: none;
}

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

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 14px;
  bottom: 18px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--mist) 52%, var(--track) 100%);
}

.page-about .about-node {
  position: relative;
  padding: 0 0 34px 48px;
}

.page-about .about-node:last-of-type {
  padding-bottom: 0;
}

.page-about .about-node__pin {
  position: absolute;
  left: 0;
  top: 0;
  width: 31px;
  height: 31px;
  border-radius: 50%;
  background: var(--cream);
  border: 1px solid var(--track);
  display: grid;
  place-items: center;
  color: var(--saddle);
}

.page-about .about-node__pin svg {
  width: 16px;
  height: 16px;
}

.page-about .about-node__year {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--saddle);
  margin: 0 0 6px;
  text-transform: uppercase;
}

.page-about .about-node__title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 10px;
  color: var(--ink);
}

.page-about .about-node__text {
  margin: 0;
  max-width: 56ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--mist-deep);
}

.page-about .about-track-mark {
  height: 8px;
  margin: 6px 0 34px 48px;
  background: repeating-linear-gradient(90deg, var(--track) 0 16px, transparent 16px 30px);
  opacity: 0.85;
}

.page-about .about-node__figure {
  margin: 0 0 34px 48px;
  max-width: 420px;
}

.page-about .about-node__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: var(--about-line);
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

.page-about .about-node__figure .media-caption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--mist);
}

/* ---------- 分段切换 ---------- */
.page-about .about-perspectives .seg {
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}

.page-about .about-perspectives .seg__btn {
  font-family: var(--mono);
  font-size: 13.5px;
  letter-spacing: 0.04em;
  padding: 9px 16px;
  border-radius: 999px;
  border: var(--about-line);
  background: transparent;
  color: var(--mist-deep);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-perspectives .seg__btn[aria-selected="true"] {
  background: var(--saddle);
  border-color: var(--saddle);
  color: var(--cream);
}

.page-about .about-perspective {
  border-left: 2px solid var(--gold);
  padding-left: 20px;
}

.page-about .about-perspective__title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 12px;
}

.page-about .about-perspective p {
  margin: 0 0 16px;
  max-width: 58ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--mist-deep);
}

.page-about .about-perspective__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-perspective__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .about-perspective__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 团队 ---------- */
.page-about .about-team__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: var(--about-line);
  object-fit: cover;
  aspect-ratio: 10 / 7;
}

.page-about .about-team__figure .media-caption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--mist);
}

/* ---------- 覆盖 ---------- */
.page-about .about-reach__strip {
  margin-bottom: 26px;
}

.page-about .about-reach__text p {
  max-width: 62ch;
}

/* ---------- 节奏 ---------- */
.page-about .about-rhythm__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--about-line);
}

.page-about .about-rhythm__item {
  border-bottom: var(--about-line);
  padding: 22px 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}

.page-about .about-rhythm__kicker {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin: 0;
}

.page-about .about-rhythm__item h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0;
}

.page-about .about-rhythm__item p:last-child {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist-deep);
}

.page-about .about-rhythm__item a {
  color: var(--mist-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gold);
}

/* ---------- 资质 ---------- */
.page-about .about-credits__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-credit {
  border: 1px solid rgba(246, 241, 232, 0.2);
  border-radius: 14px;
  padding: 20px 22px;
  outline: none;
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-about .about-credit:hover,
.page-about .about-credit:focus-visible {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-about .about-credit__value {
  font-family: var(--mono);
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--amber);
  margin: 0 0 6px;
}

.page-about .about-credit__title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
  margin: 0;
  color: var(--cream);
}

.page-about .about-credit__note {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(246, 241, 232, 0.78);
  transition: max-height 0.26s var(--ease), margin-top 0.26s var(--ease), opacity 0.26s var(--ease);
  opacity: 0;
}

.page-about .about-credit:hover .about-credit__note,
.page-about .about-credit:focus-visible .about-credit__note,
.page-about .about-credit:focus-within .about-credit__note {
  max-height: 140px;
  margin-top: 10px;
  opacity: 1;
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  border-top: var(--about-line);
  background: linear-gradient(180deg, var(--cream) 0%, var(--sand) 100%);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: center;
}

.page-about .about-cta__copy p {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--mist-deep);
}

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

.page-about .about-back {
  padding: 0 0 clamp(30px, 5vw, 56px);
}

.page-about .about-back__link {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mist-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 2px;
}

.page-about .about-back__link:hover {
  color: var(--saddle);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-credits__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-rhythm__item {
    grid-template-columns: 130px minmax(0, 1fr);
    grid-template-areas: "kick title" ". text";
    gap: 6px 20px;
    align-items: start;
  }

  .page-about .about-rhythm__kicker {
    grid-area: kick;
    padding-top: 4px;
  }

  .page-about .about-rhythm__item h3 {
    grid-area: title;
  }

  .page-about .about-rhythm__item p:last-child {
    grid-area: text;
    margin-top: 4px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 46px;
    gap: 32px;
    align-items: end;
  }

  .page-about .about-hero__note {
    display: block;
    justify-self: end;
    align-self: end;
    padding-bottom: 8px;
  }

  .page-about .about-team__body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
    gap: 40px;
  }
}

@media (min-width: 980px) {
  .page-about .about-body {
    align-items: start;
  }

  .page-about .about-rail {
    display: block;
  }

  .page-about .about-timeline::before {
    left: 15px;
  }

  .page-about .about-node {
    padding-left: 58px;
  }

  .page-about .about-track-mark {
    margin-left: 58px;
  }

  .page-about .about-node__figure {
    margin-left: 58px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-credit,
  .page-about .about-credit__note,
  .page-about .about-perspectives .seg__btn {
    transition: none;
  }

  .page-about .about-credit:hover {
    transform: none;
  }
}
<<<END>>>