.page-about {
  --about-skew: -4deg;
  --about-line: rgba(20, 22, 26, 0.1);
  --about-card-shadow: 0 14px 30px rgba(6, 24, 43, 0.26);
  background: var(--paper);
  color: var(--charcoal);
  font-family: var(--font-body);
}

.page-about .about-wrap {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 22px 0 48px;
  background:
    radial-gradient(120% 90% at 10% 0%, #13406b 0%, rgba(10, 42, 74, 0) 62%),
    linear-gradient(158deg, var(--river) 0%, var(--river-deep) 82%);
  color: var(--paper);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -18%;
  width: 66%;
  height: 156%;
  background: linear-gradient(190deg, rgba(47, 191, 113, 0.18), rgba(47, 191, 113, 0));
  transform: rotate(-9deg);
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(244, 247, 250, 0.6);
}

.page-about .breadcrumbs a {
  color: var(--glass);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 140ms var(--ease), border-color 140ms var(--ease);
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--grass-bright);
  border-bottom-color: var(--grass-bright);
}

.page-about .crumb-sep {
  color: rgba(169, 198, 228, 0.5);
}

.page-about .crumb-current {
  color: rgba(244, 247, 250, 0.88);
}

.page-about .hero-grid {
  display: grid;
  gap: 30px;
  padding-top: 26px;
}

.page-about .hero-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--grass-bright);
}

.page-about .kicker-mark {
  display: inline-block;
  width: 26px;
  height: 3px;
  background: var(--orange);
}

.page-about .hero-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.2vw, 54px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  max-width: 15em;
}

.page-about .hero-deck {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(244, 247, 250, 0.82);
}

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

.page-about .hero-figures {
  padding: 18px 18px 12px;
  background: var(--glass-06);
  border: 1px solid var(--glass-22);
  border-radius: 4px;
  backdrop-filter: blur(6px);
}

.page-about .figure-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(169, 198, 228, 0.28);
}

.page-about .figure-row:last-child {
  border-bottom: 0;
  padding-bottom: 4px;
}

.page-about .figure-num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--grass-bright);
  line-height: 1;
}

.page-about .figure-label {
  font-size: 13px;
  line-height: 1.5;
  text-align: right;
  color: rgba(244, 247, 250, 0.76);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  padding-top: 34px;
  padding-bottom: 56px;
}

.page-about .about-index {
  margin-bottom: 26px;
}

.page-about .index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--grey);
}

.page-about .index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .index-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 11px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--charcoal);
  text-decoration: none;
  background: #ffffff;
  border: 1px solid var(--about-line);
  border-left: 2px solid transparent;
  border-radius: 3px;
  transition: background 150ms var(--ease), color 150ms var(--ease), border-color 150ms var(--ease);
}

.page-about .index-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-about .index-link:hover,
.page-about .index-link:focus-visible {
  background: var(--river);
  border-color: var(--river);
  border-left-color: var(--grass);
  color: var(--paper);
}

.page-about .index-link:hover .index-num,
.page-about .index-link:focus-visible .index-num {
  color: var(--grass-bright);
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  padding: 32px 0;
  border-top: 1px solid var(--about-line);
}

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

.page-about .sec-kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--grey);
}

.page-about .sec-kicker--light {
  color: rgba(169, 198, 228, 0.85);
}

.page-about .about-section h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 4.8vw, 32px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--charcoal);
}

.page-about .sec-lede {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: #2b3037;
}

.page-about .prose p {
  margin: 14px 0 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.8;
  color: #2b3037;
}

.page-about .annotation {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--grey);
}

.page-about .is-dark {
  margin: 26px 0;
  padding: 30px 20px;
  border-top: 0;
  border-radius: 4px;
  background: linear-gradient(165deg, var(--river) 0%, var(--river-deep) 100%);
  color: var(--paper);
}

.page-about .is-dark h2 {
  color: var(--paper);
}

.page-about .about-section.is-dark .sec-kicker {
  color: var(--grass-bright);
}

/* ---------- 覆盖数据条 ---------- */
.page-about .cover-strip {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .cover-strip li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  background: #ffffff;
  border-left: 3px solid var(--grass);
  border-radius: 2px;
}

.page-about .cover-strip li:nth-child(2) {
  border-left-color: var(--glass);
}

.page-about .cover-strip li:nth-child(3) {
  border-left-color: var(--orange);
}

.page-about .cover-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--river);
  line-height: 1;
}

.page-about .cover-label {
  font-size: 13px;
  color: var(--grey);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 26px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  object-fit: cover;
  background: var(--river-deep);
}

.page-about .about-figure--wide img {
  aspect-ratio: 16 / 9;
}

.page-about .about-figure--band img {
  aspect-ratio: 2 / 1;
}

.page-about .about-figure--tall img {
  aspect-ratio: 3 / 2;
}

.page-about .about-figure figcaption {
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--grey);
}

/* ---------- 岗位卡片 ---------- */
.page-about .role-grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-about .role-card {
  padding: 18px 18px 20px;
  background: linear-gradient(180deg, rgba(10, 42, 74, 0.97) 0%, rgba(6, 24, 43, 0.99) 100%);
  border: 1px solid var(--glass-22);
  border-left: 3px solid var(--grass);
  border-radius: 4px;
  color: var(--paper);
  transition: transform 170ms var(--ease), border-color 170ms var(--ease), box-shadow 170ms var(--ease);
}

.page-about .role-card:hover,
.page-about .role-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--grass-bright);
  border-left-color: var(--grass-bright);
  box-shadow: var(--about-card-shadow);
}

.page-about .role-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-about .role-name {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .role-count {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--grass-bright);
}

.page-about .role-count .numeric {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
}

.page-about .role-desc {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(244, 247, 250, 0.8);
}

.page-about .role-more {
  margin: 10px 0 0;
  padding-top: 10px;
  border-top: 1px solid rgba(169, 198, 228, 0.22);
  font-size: 13px;
  line-height: 1.7;
  color: var(--glass);
  transition: opacity 200ms var(--ease);
}

/* ---------- 时间线 ---------- */
.page-about .tl {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0 6px;
  list-style: none;
}

.page-about .tl-item {
  position: relative;
  isolation: isolate;
  padding: 16px 18px;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(169, 198, 228, 0.2);
  border-left: 3px solid var(--glass);
  border-radius: 2px;
  transform: rotate(var(--about-skew));
}

.page-about .tl-item:nth-child(even)::before {
  background: rgba(47, 191, 113, 0.1);
  border-left-color: var(--grass);
  transform: rotate(4deg);
}

.page-about .tl-version {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: #c2530f;
}

.page-about .tl-item:nth-child(even) .tl-version {
  color: #1c7a49;
}

.page-about .tl-title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.35;
  color: var(--charcoal);
}

.page-about .tl-desc {
  margin: 8px 0 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.75;
  color: #3a4048;
}

/* ---------- 处理流程 ---------- */
.page-about .flow {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .flow-step {
  padding: 16px 16px 18px;
  background: rgba(244, 247, 250, 0.06);
  border-top: 2px solid var(--orange);
  border-radius: 2px;
}

.page-about .flow-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--orange);
  line-height: 1;
}

.page-about .flow-step h3 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .flow-step p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(244, 247, 250, 0.78);
}

.page-about .about-callout {
  margin-top: 22px;
  padding: 16px 18px;
  background: var(--orange-12);
  border-left: 3px solid var(--orange);
  border-radius: 2px;
}

.page-about .about-callout p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(244, 247, 250, 0.88);
}

.page-about .about-callout .numeric {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--grass-bright);
}

.page-about .more-link {
  margin: 18px 0 0;
  font-size: 14px;
}

.page-about .more-link a {
  color: var(--grass-bright);
  text-decoration: none;
  border-bottom: 1px solid rgba(123, 224, 168, 0.5);
  padding-bottom: 2px;
  transition: border-color 150ms var(--ease), color 150ms var(--ease);
}

.page-about .more-link a:hover,
.page-about .more-link a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 场馆 ---------- */
.page-about .venue-split {
  display: grid;
  gap: 20px;
  margin-top: 18px;
}

.page-about .venue-text p {
  margin: 0 0 14px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: #2b3037;
}

.page-about .venue-text .about-figure {
  margin-top: 20px;
}

.page-about .venue-facts {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .venue-facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  font-size: 14px;
  line-height: 1.6;
  color: #3a4048;
  background: #ffffff;
  border-left: 3px solid var(--glass);
}

.page-about .venue-facts li:nth-child(2) {
  border-left-color: var(--grass);
}

.page-about .venue-facts li:nth-child(3) {
  border-left-color: var(--orange);
}

.page-about .venue-num {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--river);
  line-height: 1;
}

/* ---------- 合作生态 ---------- */
.page-about .eco {
  display: grid;
  gap: 22px;
  margin-top: 22px;
  align-items: center;
}

.page-about .eco-svg {
  width: 100%;
  max-width: 260px;
  height: auto;
  margin: 0 auto;
}

.page-about .eco-ring {
  fill: none;
  stroke: rgba(169, 198, 228, 0.3);
  stroke-width: 2;
}

.page-about .eco-ring--inner {
  stroke: rgba(169, 198, 228, 0.16);
  stroke-dasharray: 4 6;
}

.page-about .eco-node circle {
  fill: var(--river-deep);
  stroke: var(--grass);
  stroke-width: 2;
  transform-box: fill-box;
  transform-origin: center;
  transition: transform 170ms var(--ease), fill 170ms var(--ease), stroke 170ms var(--ease);
}

.page-about .eco-node text {
  fill: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-anchor: middle;
  dominant-baseline: central;
}

.page-about .eco-node:hover circle {
  transform: scale(1.18);
  fill: var(--grass);
  stroke: var(--grass-bright);
}

.page-about .eco-lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 247, 250, 0.82);
}

.page-about .eco-legend {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-about .eco-legend li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(169, 198, 228, 0.24);
  font-size: 14px;
}

.page-about .eco-name {
  color: rgba(244, 247, 250, 0.86);
}

.page-about .eco-count {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--grass-bright);
}

.page-about .eco-cta {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(169, 198, 228, 0.24);
  display: grid;
  gap: 16px;
}

.page-about .eco-cta p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 247, 250, 0.82);
}

.page-about .eco-cta .btn {
  justify-self: start;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding: 26px 0 62px;
  }

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

  .page-about .cover-strip li {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 16px 14px;
  }

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

  .page-about .role-card:nth-child(2) {
    margin-top: 26px;
  }

  .page-about .role-card:nth-child(3) {
    margin-top: 52px;
  }

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

  .page-about .is-dark {
    padding: 36px 30px;
  }

  .page-about .eco {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 30px;
  }

  .page-about .eco-svg {
    max-width: 220px;
  }

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

/* ---------- 桌面：杂志式双栏 ---------- */
@media (min-width: 960px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.86fr);
    gap: 48px;
    align-items: start;
    padding-top: 34px;
  }

  .page-about .hero-figures {
    margin-top: 8px;
    transform: rotate(-2deg);
  }

  .page-about .about-body {
    display: grid;
    grid-template-columns: 178px minmax(0, 1fr);
    gap: 54px;
    align-items: start;
    padding-top: 46px;
    padding-bottom: 72px;
  }

  .page-about .about-index {
    position: sticky;
    top: 92px;
    margin-bottom: 0;
  }

  .page-about .index-list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
    padding-bottom: 0;
  }

  .page-about .index-link {
    border: 0;
    border-left: 2px solid rgba(20, 22, 26, 0.14);
    background: transparent;
    border-radius: 0;
    padding: 9px 10px;
    white-space: normal;
  }

  .page-about .index-link:hover,
  .page-about .index-link:focus-visible {
    background: rgba(10, 42, 74, 0.06);
    border-color: rgba(20, 22, 26, 0.14);
    border-left-color: var(--grass);
    color: var(--river);
  }

  .page-about .index-link:hover .index-num,
  .page-about .index-link:focus-visible .index-num {
    color: #c2530f;
  }

  .page-about .about-section {
    padding: 44px 0;
  }

  .page-about .about-section:first-child {
    padding-top: 0;
  }

  .page-about .venue-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 34px;
    align-items: start;
  }

  .page-about .venue-split .about-figure {
    margin-top: 0;
  }

  .page-about .eco {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 40px;
  }

  .page-about .eco-svg {
    max-width: 260px;
  }

  .page-about .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 仅指针设备：岗位卡片展开一行说明 ---------- */
@media (hover: hover) and (min-width: 720px) {
  .page-about .role-more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding-top: 0;
    margin-top: 0;
    border-top-color: transparent;
  }

  .page-about .role-card:hover .role-more,
  .page-about .role-card:focus-within .role-more {
    max-height: 100px;
    opacity: 1;
    margin-top: 10px;
    padding-top: 10px;
    border-top-color: rgba(169, 198, 228, 0.22);
  }
}

.page-about .role-card,
.page-about .index-link,
.page-about .eco-node circle {
  transition-timing-function: var(--ease);
}

.page-about a:focus-visible,
.page-about .role-card:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}
<<<END>>>