.page-about {
  --about-pad-y: clamp(42px, 6.5vw, 92px);
  background: var(--c-ink);
  color: var(--c-paper);
}

.page-about .wrap {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  padding-top: calc(var(--header-h) + clamp(40px, 7vw, 92px));
  padding-bottom: clamp(34px, 5.5vw, 68px);
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-mist);
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .breadcrumbs a {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .breadcrumbs a:hover {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
}

.page-about .breadcrumbs a:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

.page-about .eyebrow {
  margin: 0 0 16px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-about .about-h1 {
  margin: 0 0 clamp(20px, 3vw, 34px);
  max-width: 15em;
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(36px, 7.2vw, 100px);
  line-height: 1;
  letter-spacing: -0.015em;
  color: var(--c-paper);
  text-wrap: balance;
}

.page-about .about-h1::after {
  content: "";
  display: block;
  width: clamp(64px, 12vw, 160px);
  height: 2px;
  margin-top: clamp(18px, 2.6vw, 30px);
  background: var(--c-cyan);
}

.page-about .about-lede {
  margin: 0;
  max-width: 38em;
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.8;
  color: var(--c-mist);
}

/* 数据条 */
.page-about .about-stats {
  list-style: none;
  margin: clamp(32px, 4.5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--c-line-soft);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-stat {
  background: var(--c-ink);
  padding: 22px 20px 24px;
  display: grid;
  gap: 8px;
}

.page-about .about-stat b {
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: clamp(30px, 3.4vw, 46px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-paper);
}

.page-about .about-stat span {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-mist);
}

/* ============ 通用章节 ============ */
.page-about .about-section {
  border-top: 1px solid var(--c-line);
  padding-top: var(--about-pad-y);
  padding-bottom: var(--about-pad-y);
}

.page-about .about-section--board {
  background: var(--c-board);
}

.page-about .about-head {
  display: grid;
  gap: 12px;
  margin: 0 0 clamp(28px, 4.5vw, 54px);
}

.page-about .idx {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-about .about-h2 {
  margin: 0;
  max-width: 22em;
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(26px, 4.4vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-about .about-note {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-about .about-footnote {
  margin: clamp(24px, 3vw, 36px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-footnote a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(49, 225, 196, 0.4);
  transition: border-color var(--dur) var(--ease);
}

.page-about .about-footnote a:hover {
  border-bottom-color: var(--c-cyan);
}

.page-about .about-footnote a:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

/* ============ 01 分工 ============ */
.page-about .about-crew {
  display: grid;
  gap: clamp(30px, 4vw, 50px);
}

.page-about .tabs-list {
  display: flex;
  gap: 6px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--c-line);
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .tab {
  flex: 0 0 auto;
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 12px 10px 14px;
  font-family: var(--f-body);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--c-mist);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .tab:hover {
  color: var(--c-paper);
}

.page-about .tab[aria-selected="true"] {
  color: var(--c-paper);
  border-bottom-color: var(--c-cyan);
}

.page-about .tab:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-about .tab-panel {
  animation: about-panel-in 0.2s var(--ease) both;
}

.page-about .tab-panel[hidden] {
  display: none;
}

.page-about .panel-lead {
  margin: 0 0 18px;
  max-width: 32em;
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.75;
  color: var(--c-paper);
}

.page-about .about-kv {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-kv li {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--c-line-soft);
}

.page-about .about-kv .k {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-orange);
}

.page-about .about-kv .v {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-dim);
}

@keyframes about-panel-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 图片容器 */
.page-about .about-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--c-line);
  background: var(--c-deep);
  overflow: hidden;
}

.page-about .about-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--c-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-line-soft) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.24;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-figure--wide img {
  aspect-ratio: 8 / 3;
}

.page-about .about-figure--tall img {
  aspect-ratio: 4 / 3;
}

.page-about .media-caption {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 11px 14px;
  border-top: 1px solid var(--c-line-soft);
  background: var(--c-ink);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--c-mist);
}

/* ============ 02 值场 ============ */
.page-about .shift-grid {
  display: grid;
  gap: 1px;
  background: var(--c-line-soft);
  border: 1px solid var(--c-line-soft);
}

.page-about .shift-cell {
  background: var(--c-board);
  padding: 24px 22px 28px;
  transition: background-color var(--dur) var(--ease);
}

.page-about .shift-cell:hover {
  background: var(--c-grid);
}

.page-about .shift-idx {
  margin: 0 0 14px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-about .shift-name {
  margin: 0 0 12px;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--c-paper);
}

.page-about .shift-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-dim);
}

/* ============ 03 落地流程 ============ */
.page-about .pipe {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .pipe li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line-soft);
}

.page-about .pipe li:first-child {
  border-top: 1px solid var(--c-line-soft);
}

.page-about .pipe-idx {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-orange);
  padding-top: 4px;
}

.page-about .pipe-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--c-paper);
}

.page-about .pipe-body p {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-dim);
}

/* ============ 04 演进 ============ */
.page-about .about-section#timeline .about-figure {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .tl li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 24px 14px 24px 12px;
  border-top: 1px solid var(--c-line-soft);
  border-left: 2px solid transparent;
  transition: background-color var(--dur) var(--ease), border-left-color var(--dur) var(--ease);
}

.page-about .tl li:last-child {
  border-bottom: 1px solid var(--c-line-soft);
}

.page-about .tl li:hover,
.page-about .tl li:focus-within {
  background: var(--c-cyan-soft);
  border-left-color: var(--c-cyan);
}

.page-about .tl-mark {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
}

.page-about .tl-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--c-paper);
}

.page-about .tl-body p {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-dim);
}

/* ============ 05 供应方 ============ */
.page-about .supply-grid {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
}

.page-about .supply-lead {
  margin: 0 0 26px;
  max-width: 34em;
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.78;
  color: var(--c-paper);
}

.page-about .supply-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .supply-list li {
  padding: 18px 0;
  border-top: 1px solid var(--c-line-soft);
}

.page-about .supply-list li:last-child {
  border-bottom: 1px solid var(--c-line-soft);
}

.page-about .supply-list h3 {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: clamp(18px, 1.8vw, 22px);
  letter-spacing: 0.02em;
  color: var(--c-cyan);
}

.page-about .supply-list p {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-dim);
}

/* ============ 结尾 ============ */
.page-about .about-cta {
  border-top: 1px solid var(--c-line);
  padding-bottom: clamp(56px, 8vw, 120px);
}

.page-about .about-cta .about-h2 {
  max-width: 18em;
  margin-bottom: 18px;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-about .btn:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

  .page-about .tl li {
    grid-template-columns: 110px minmax(0, 1fr);
    align-items: start;
    gap: 24px;
  }

  .page-about .tl-mark {
    padding-top: 4px;
  }
}

@media (min-width: 940px) {
  .page-about .about-crew {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    gap: clamp(34px, 4.5vw, 64px);
    align-items: start;
  }

  .page-about .supply-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-about .about-kv li {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-about .about-kv .k {
    padding-top: 4px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tab-panel {
    animation: none;
  }

  .page-about .tl li,
  .page-about .shift-cell,
  .page-about .tab {
    transition: none;
  }
}
<<<END>>>