.page-about {
  --about-note-w: 264px;
  --about-ink-soft: rgba(244, 241, 232, 0.78);
  --about-ink-dim: rgba(244, 241, 232, 0.56);
  display: block;
  padding-bottom: clamp(32px, 5vw, 72px);
  background:
    radial-gradient(120% 55% at 82% 0%, rgba(23, 87, 68, 0.45), transparent 62%),
    radial-gradient(90% 40% at 0% 34%, rgba(15, 59, 46, 0.5), transparent 70%),
    var(--ink);
  color: var(--chalk);
}

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

.page-about .breadcrumb {
  padding-top: clamp(14px, 2.5vw, 26px);
}

.page-about .section {
  margin-block-start: clamp(38px, 6vw, 78px);
}

/* ---------- 页头 ---------- */
.page-about .about-head {
  padding-block: clamp(18px, 3.5vw, 34px) clamp(18px, 3vw, 30px);
}

.page-about .about-head .page-title {
  max-width: 17ch;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
  line-height: 1.14;
}

.page-about .about-head .lede {
  max-width: 58ch;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--about-ink-soft);
}

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

/* ---------- 首屏图 ---------- */
.page-about .about-hero {
  margin: clamp(14px, 2.5vw, 26px) auto clamp(20px, 3.5vw, 38px);
}

.page-about .about-hero__frame {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 16 / 10;
  background: var(--pitch);
}

.page-about .about-hero__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.06);
}

.page-about .about-hero__caption {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 1px solid var(--line-strong);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--moss);
}

/* ---------- 引句 ---------- */
.page-about .about-quote {
  margin: 0 auto clamp(26px, 4.5vw, 52px);
  padding-left: clamp(14px, 3vw, 26px);
  border-left: 2px solid var(--orange);
  max-width: 880px;
}

.page-about .about-quote p {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.6;
  color: var(--chalk);
}

/* ---------- 两栏骨架 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
}

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

.page-about .about-sticky {
  position: static;
}

.page-about .about-lede-line {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.78;
  color: var(--about-ink-soft);
}

.page-about .about-side-note {
  margin: 0;
  padding-left: 12px;
  border-left: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.72;
  color: var(--moss);
}

.page-about .section__head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ---------- 批注栏 ---------- */
.page-about .about-notes {
  display: grid;
  gap: 18px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.page-about .about-note__label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--yellow);
}

.page-about .about-note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--moss);
}

.page-about .about-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(111, 183, 200, 0.45);
}

.page-about .about-note a:hover,
.page-about .about-note a:focus-visible {
  color: var(--chalk);
  border-bottom-color: var(--yellow);
}

/* ---------- 数字区 ---------- */
.page-about .about-figures {
  margin-top: clamp(22px, 3.5vw, 36px);
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-figures--tight {
  margin-top: clamp(18px, 2.6vw, 26px);
}

/* ---------- 回访路径 ---------- */
.page-about .about-path {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-path__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-path__num {
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.1;
  color: var(--orange);
}

.page-about .about-path__body h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  color: var(--chalk);
}

.page-about .about-path__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

.page-about .about-dims {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-dims li {
  padding: 5px 13px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--moss);
}

/* ---------- 图片块 ---------- */
.page-about .about-figure {
  margin: 0;
  min-width: 0;
}

.page-about .about-figure .media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: var(--pitch);
}

.page-about .media-frame--tall {
  aspect-ratio: 3 / 4;
}

.page-about .media-frame--square {
  aspect-ratio: 3 / 2;
}

.page-about .about-figure .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--moss);
}

/* ---------- 时间带 ---------- */
.page-about .about-shifts {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-shift {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-shift__time {
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.2;
  color: var(--orange);
}

.page-about .about-shift__tag {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-shift p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

/* ---------- 栏目秩序 ---------- */
.page-about .about-nav-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--line);
}

.page-about .about-nav-list li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-nav-list__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.08em;
  color: var(--yellow);
}

.page-about .about-nav-list__name {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 800;
  color: var(--chalk);
}

.page-about .about-nav-list__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--moss);
}

.page-about .about-order__foot {
  margin: 20px 0 0;
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, rgba(23, 87, 68, 0.85), rgba(11, 15, 13, 0.9));
  border: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

.page-about .about-order__foot a {
  color: var(--yellow);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 213, 71, 0.45);
}

.page-about .about-order__foot a:hover,
.page-about .about-order__foot a:focus-visible {
  color: var(--chalk);
  border-bottom-color: var(--orange);
}

/* ---------- 共建横滑 ---------- */
.page-about .about-partners {
  margin-top: clamp(28px, 4.5vw, 48px);
}

.page-about .about-partners__title {
  margin: 0 0 14px;
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 800;
  color: var(--chalk);
}

.page-about .about-track {
  display: flex;
  gap: 14px;
  margin: 0;
  padding: 4px 0 18px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--pitch-2) transparent;
}

.page-about .about-track::-webkit-scrollbar {
  height: 6px;
}

.page-about .about-track::-webkit-scrollbar-thumb {
  background: var(--pitch-2);
  border-radius: var(--radius-pill);
}

.page-about .about-card {
  flex: 0 0 min(292px, 82%);
  scroll-snap-align: start;
  padding: 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(155deg, var(--pitch) 0%, var(--ink) 82%);
}

.page-about .about-card__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-about .about-card h4 {
  margin: 10px 0 8px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.42;
  color: var(--chalk);
}

.page-about .about-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  padding-left: 26px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 16px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, rgba(245, 213, 71, 0.55), rgba(159, 184, 168, 0.16));
}

.page-about .about-stage {
  position: relative;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-stage:first-child {
  border-top: 0;
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 21px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 0 0 0 4px rgba(245, 213, 71, 0.12);
  transition: background 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-stage[open]::before {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 106, 26, 0.18);
}

.page-about .about-stage > summary {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

.page-about .about-stage > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-stage > summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.page-about .about-stage__title {
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 800;
  color: var(--chalk);
}

.page-about .about-stage__meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--moss);
}

.page-about .about-stage__meta::after {
  content: "＋";
  font-size: 14px;
  color: var(--orange);
}

.page-about .about-stage[open] .about-stage__meta::after {
  content: "－";
}

.page-about .about-stage__body {
  max-width: 62ch;
  padding: 0 0 18px;
}

.page-about .about-stage[open] .about-stage__body {
  animation: about-fade-in 0.28s ease both;
}

.page-about .about-stage__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-stage__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(111, 183, 200, 0.45);
}

.page-about .about-stage__body a:hover,
.page-about .about-stage__body a:focus-visible {
  color: var(--chalk);
  border-bottom-color: var(--yellow);
}

@keyframes about-fade-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 联系 ---------- */
.page-about .about-contact__card {
  padding: clamp(22px, 4vw, 44px);
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, var(--pitch-2) 0%, var(--pitch) 52%, var(--ink) 100%);
}

.page-about .about-contact__intro {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-contact__list {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-contact__list li {
  display: grid;
  gap: 3px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--chalk);
  min-width: 0;
}

.page-about .about-contact__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--moss);
}

.page-about .about-contact__list a {
  color: var(--chalk);
  text-decoration: none;
  border-bottom: 1px solid rgba(244, 241, 232, 0.28);
  word-break: break-word;
}

.page-about .about-contact__list a:hover,
.page-about .about-contact__list a:focus-visible {
  color: var(--yellow);
  border-bottom-color: var(--orange);
}

.page-about .about-contact__note {
  margin: 18px 0 0;
  padding-left: 12px;
  border-left: 1px solid var(--line-strong);
  font-size: 13px;
  line-height: 1.75;
  color: var(--moss);
}

.page-about .about-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero__frame {
    aspect-ratio: 21 / 9;
  }

  .page-about .about-nav-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 26px;
  }

  .page-about .about-contact__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 32px;
  }

  .page-about .about-shift {
    grid-template-columns: 128px 92px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-about .section__head {
    grid-template-columns: minmax(0, 1fr) 250px;
    align-items: end;
    gap: 32px;
  }

  .page-about .about-card:nth-child(even) {
    margin-top: 32px;
  }

  .page-about .about-card:nth-child(odd) {
    margin-bottom: 32px;
  }
}

@media (min-width: 960px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) var(--about-note-w);
    gap: clamp(32px, 4.5vw, 64px);
    align-items: start;
  }

  .page-about .about-sticky {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-about .about-path__item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 16px;
    padding: 22px 0;
  }
}

@media (min-width: 1100px) {
  .page-about .about-nav-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stage__body,
  .page-about .about-stage[open] .about-stage__body {
    animation: none;
  }

  .page-about .about-stage::before {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>