.page-about {
  --about-hero-shift: -8deg;
  --about-ink: var(--indigo);
  --about-card-line: rgba(44, 143, 216, 0.22);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: 22px;
  padding-bottom: 6px;
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.page-about .breadcrumb a {
  color: var(--sky);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  text-decoration: underline;
}

.page-about .breadcrumb span[aria-current="page"] {
  color: var(--indigo);
  font-weight: 700;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 64px;
  background: var(--warm);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: 38%;
  right: -14%;
  bottom: -24%;
  height: 86%;
  border-radius: var(--r-lg);
  transform: rotate(var(--about-hero-shift));
  background: linear-gradient(158deg, rgba(44, 143, 216, 0.16), rgba(18, 181, 201, 0.09) 58%, rgba(253, 251, 246, 0) 100%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 88px;
  height: 5px;
  background: linear-gradient(90deg, var(--sky) 0 20%, var(--warm) 20% 40%, var(--flag-red) 40% 60%, var(--flag-green) 60% 80%, var(--flag-yellow) 80% 100%);
  border-radius: 0 0 4px 0;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 34px;
}

.page-about .about-hero__index {
  margin: 0 0 16px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--sky);
  text-transform: uppercase;
}

.page-about .about-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 32px;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--indigo);
  max-width: 20em;
}

.page-about .about-hero__lede {
  margin: 0 0 28px;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink-soft);
}

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

.page-about .about-hero__aside {
  padding: 24px 22px;
  border: 1px solid var(--about-card-line);
  border-radius: var(--r-lg);
  background: rgba(253, 251, 246, 0.86);
  box-shadow: var(--shadow);
}

.page-about .about-hero__aside-label {
  margin: 0 0 16px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

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

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--indigo);
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--sand);
}

.page-about .about-hero__facts li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-hero__fact-no {
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.page-about .about-hero__aside-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 数据带 ---------- */
.page-about .about-stats-band {
  background: var(--indigo-deep);
  padding: 36px 0 30px;
}

.page-about .about-stats {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 26px;
}

.page-about .about-stat {
  position: relative;
  padding-left: 18px;
  border-left: 3px solid rgba(253, 251, 246, 0.18);
  outline: none;
  transition: border-color 160ms ease;
}

.page-about .about-stat:hover,
.page-about .about-stat:focus-visible {
  border-left-color: var(--gold);
}

.page-about .about-stat:focus-visible {
  box-shadow: 0 0 0 2px var(--gold);
  border-radius: var(--r-sm);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 36px;
  line-height: 1.1;
  color: var(--flag-yellow);
  letter-spacing: -0.01em;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--on-dark);
}

.page-about .about-stat__note {
  display: block;
  margin-top: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(253, 251, 246, 0.66);
  transition: max-height 240ms ease, opacity 240ms ease, margin-top 240ms ease;
}

.page-about .about-stat:hover .about-stat__note,
.page-about .about-stat:focus-within .about-stat__note,
.page-about .about-stat:focus-visible .about-stat__note {
  max-height: 7em;
  opacity: 1;
  margin-top: 10px;
}

/* ---------- 品牌故事 ---------- */
.page-about .about-story {
  background: var(--warm);
}

.page-about .about-story__grid {
  display: grid;
  gap: 28px;
}

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

.page-about .about-story__head {
  margin-bottom: 24px;
}

.page-about .about-story__lead p {
  margin: 0 0 18px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 38em;
}

.page-about .about-story__lead p:first-child::first-letter {
  float: left;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 52px;
  line-height: 0.92;
  padding: 6px 12px 0 0;
  color: var(--violet);
}

.page-about .about-story__figure {
  margin: 32px 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--about-card-line);
  background: var(--sand);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline-section {
  background: linear-gradient(180deg, var(--warm) 0%, rgba(237, 231, 218, 0.62) 100%);
}

.page-about .about-years {
  display: flex;
  gap: 10px;
  margin: 22px 0 30px;
  padding-bottom: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-year {
  flex: 0 0 auto;
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--sky);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--indigo);
  text-decoration: none;
  background: rgba(253, 251, 246, 0.9);
  transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}

.page-about .about-year:hover,
.page-about .about-year:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--indigo);
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 58px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line-strong);
}

.page-about .about-stage {
  position: relative;
  padding-bottom: 22px;
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -42px;
  top: 20px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--warm);
  border: 2px solid var(--sky);
}

.page-about .about-stage__year {
  display: block;
  margin-bottom: 8px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--green, var(--flag-green));
}

.page-about .about-stage__card {
  border-radius: var(--r-md);
  border: 1px solid var(--about-card-line);
  background: var(--warm);
  padding: 20px 20px 18px;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.page-about .about-stage__card .card__text {
  margin-bottom: 12px;
}

.page-about .about-stage:target .about-stage__card {
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(224, 166, 28, 0.36);
}

.page-about .about-stage:target::before {
  background: var(--gold);
  border-color: var(--gold);
}

.page-about .about-timeline__figure {
  margin: 26px 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--about-card-line);
  background: var(--sand);
}

/* ---------- 服务网络 ---------- */
.page-about .about-network {
  background: var(--jade);
  color: var(--warm);
}

.page-about .about-network .section-head__index {
  color: var(--flag-yellow);
}

.page-about .about-network .section-head__title {
  color: var(--warm);
}

.page-about .about-network .section-head__note {
  color: rgba(253, 251, 246, 0.72);
}

.page-about .about-network__head {
  margin-bottom: 30px;
}

.page-about .about-network__layout {
  display: grid;
  gap: 26px;
}

.page-about .about-network__text p {
  margin: 0 0 16px;
  font-size: 16.5px;
  line-height: 1.82;
  color: rgba(253, 251, 246, 0.86);
  max-width: 34em;
}

.page-about .about-network__text .btn {
  margin-top: 8px;
}

.page-about .about-network__diagram {
  padding: 22px 20px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(253, 251, 246, 0.24);
  background: rgba(253, 251, 246, 0.07);
}

.page-about .about-network__hub {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--flag-yellow);
}

.page-about .about-network__hub-desc {
  margin: 6px 0 20px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(253, 251, 246, 0.72);
}

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

.page-about .about-nodes--relay {
  margin-top: 14px;
  padding-top: 16px;
  border-top: 1px dashed rgba(253, 251, 246, 0.28);
}

.page-about .about-node {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 13px;
  border-radius: 999px;
  background: rgba(253, 251, 246, 0.13);
  font-size: 13.5px;
  color: var(--warm);
  transition: background-color 120ms ease;
}

.page-about .about-node:hover {
  background: rgba(253, 251, 246, 0.24);
}

.page-about .about-node__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--flag-yellow);
  flex: 0 0 auto;
}

.page-about .about-nodes .about-node:nth-child(2) .about-node__dot {
  background: var(--warm);
}

.page-about .about-nodes .about-node:nth-child(3) .about-node__dot {
  background: var(--flag-red);
}

.page-about .about-nodes .about-node:nth-child(4) .about-node__dot {
  background: var(--sky);
}

.page-about .about-nodes .about-node:nth-child(5) .about-node__dot {
  background: var(--flag-green);
}

.page-about .about-nodes .about-node:nth-child(6) .about-node__dot {
  background: var(--cyan);
}

.page-about .about-nodes--relay .about-node__dot {
  background: var(--gold);
}

.page-about .about-network__figure {
  margin: 28px 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid rgba(253, 251, 246, 0.2);
  background: rgba(0, 0, 0, 0.14);
}

.page-about .about-network__figure .media-frame__caption {
  color: rgba(253, 251, 246, 0.7);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--warm);
}

.page-about .about-team__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-role {
  padding: 22px 20px;
  border: 1px solid var(--about-card-line);
  border-radius: var(--r-md);
  background: rgba(253, 251, 246, 0.9);
  border-top: 5px solid var(--sky);
}

.page-about .about-role:nth-child(2) {
  border-top-color: var(--violet);
}

.page-about .about-role:nth-child(3) {
  border-top-color: var(--gold);
}

.page-about .about-role__no {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sky);
}

.page-about .about-role__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 800;
  color: var(--indigo);
}

.page-about .about-role__text {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-role__meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--sand);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--jade);
}

.page-about .about-partners {
  margin-top: 26px;
}

.page-about .about-partners p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 质检 ---------- */
.page-about .about-quality {
  background: linear-gradient(180deg, rgba(237, 231, 218, 0.72) 0%, var(--warm) 100%);
}

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

.page-about .about-quality__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  counter-reset: qstep;
}

.page-about .about-quality__step {
  position: relative;
  padding: 22px 0 22px 42px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-quality__step:last-child {
  border-bottom: 0;
}

.page-about .about-quality__no {
  position: absolute;
  left: 0;
  top: 24px;
  font-size: 13px;
  font-weight: 700;
  color: var(--flag-red);
  letter-spacing: 0.08em;
}

.page-about .about-quality__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 800;
  color: var(--indigo);
}

.page-about .about-quality__step p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 40em;
}

.page-about .about-quality__stat {
  margin-top: 30px;
  padding: 26px 22px;
  border-radius: var(--r-lg);
  background: var(--wine);
  color: var(--warm);
  display: grid;
  gap: 12px;
}

.page-about .about-quality__stat-num {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 52px;
  line-height: 1;
  color: var(--flag-yellow);
}

.page-about .about-quality__stat-num .stat__unit {
  font-size: 24px;
  margin-left: 4px;
}

.page-about .about-quality__stat-text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(253, 251, 246, 0.88);
  max-width: 34em;
}

/* ---------- 为什么选择 ---------- */
.page-about .about-why {
  background: var(--warm);
}

.page-about .about-why__grid {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-about .about-reason {
  border-radius: var(--r-md);
  padding: 22px 20px;
}

.page-about .about-reason .card__index {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-about .about-reason .card__title {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 800;
  color: var(--indigo);
  margin: 0 0 10px;
}

.page-about .about-reason .card__text {
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-why__cta {
  margin-top: 30px;
  padding: 26px 22px;
  border-radius: var(--r-lg);
  border: 1px solid var(--about-card-line);
  background: rgba(237, 231, 218, 0.5);
}

.page-about .about-why__cta-text {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--indigo);
  max-width: 38em;
}

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

/* ---------- 图片通用 ---------- */
.page-about .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media-frame__caption {
  padding: 12px 18px 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-soft);
  background: rgba(253, 251, 246, 0.92);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding: 56px 0 88px;
  }

  .page-about .about-hero h1 {
    font-size: 42px;
  }

  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px 34px;
  }

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

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

  .page-about .about-quality__stat {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 28px;
    padding: 32px 30px;
  }

  .page-about .about-quality__stat-num {
    font-size: 64px;
  }

  .page-about .about-timeline {
    padding-left: 92px;
  }

  .page-about .about-timeline::before {
    left: 34px;
  }

  .page-about .about-stage::before {
    left: -63px;
    top: 30px;
  }

  .page-about .about-stage {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    padding-bottom: 26px;
  }

  .page-about .about-stage__year {
    margin-bottom: 0;
    padding-top: 22px;
    text-align: right;
    font-size: 17px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
    gap: 56px;
  }

  .page-about .about-hero h1 {
    font-size: 50px;
    max-width: 16em;
  }

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

  .page-about .about-stat {
    padding: 0 24px 4px 20px;
    border-left: 1px solid rgba(253, 251, 246, 0.18);
  }

  .page-about .about-stat:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-about .about-stat:hover,
  .page-about .about-stat:focus-visible {
    border-left-color: rgba(253, 251, 246, 0.18);
  }

  .page-about .about-stats-band {
    padding: 48px 0 42px;
  }

  .page-about .about-stat__num {
    font-size: 44px;
  }

  .page-about .about-story__grid {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .about-axis {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
    position: sticky;
    top: calc(var(--header-h) + 36px);
    align-self: start;
    padding-top: 8px;
  }

  .page-about .about-axis__tick {
    font-size: 13px;
    letter-spacing: 0.08em;
    color: var(--sky);
  }

  .page-about .about-axis__rule {
    width: 1px;
    height: 34px;
    background: var(--line-strong);
    margin-right: 22px;
  }

  .page-about .about-story__lead p {
    font-size: 17.5px;
  }

  .page-about .about-network__layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-why__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-why__cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 32px 34px;
  }

  .page-about .about-why__cta-text {
    margin: 0;
  }

  .page-about .about-why__cta-actions {
    flex: 0 0 auto;
  }

  .page-about .about-timeline__figure {
    max-width: 760px;
    margin-left: 92px;
  }
}
<<<END>>>

.page-about {
  --green: currentColor;
}