.page-about {
  background: var(--sand);
  color: var(--stone);
}

/* 面包屑 */
.page-about .about-crumbs {
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .05em;
}

.page-about .breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--stone);
}

.page-about .breadcrumbs li + li::before {
  content: "/";
  color: var(--terracotta);
}

.page-about .breadcrumbs a {
  color: var(--clay-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease);
}

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

/* 首屏 */
.page-about .about-hero {
  padding-top: clamp(26px, 5vw, 58px);
  padding-bottom: clamp(44px, 7vw, 92px);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 58px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.page-about .about-hero-text {
  min-width: 0;
}

@media (min-width: 620px) {
  .page-about .about-hero-text {
    border-left: 1px solid var(--line-strong);
    padding-left: clamp(18px, 3vw, 38px);
  }
}

.page-about .about-h1 {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(2.15rem, 8.4vw, 5rem);
  line-height: 1.08;
  letter-spacing: -.005em;
  color: var(--ink);
}

.page-about .about-lede {
  margin-top: clamp(18px, 2.6vw, 26px);
  max-width: 32em;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.85;
  color: var(--stone);
}

.page-about .about-hero-note {
  margin: 18px 0 0;
  padding-top: 14px;
  max-width: 30em;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}

.page-about .about-orbit {
  margin: 0 auto;
  width: min(100%, 420px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  overflow: hidden;
  background: var(--paper);
  box-shadow: 0 0 0 12px var(--paper), 0 0 0 13px var(--line-strong);
}

.page-about .about-orbit img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.85) sepia(.08);
}

/* 区块通用微调 */
.page-about .about-why-body p,
.page-about .about-palette-text p,
.page-about .about-reach-lead p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-why-body p:last-child,
.page-about .about-palette-text p:last-child,
.page-about .about-reach-lead p:last-child {
  margin-bottom: 0;
}

/* 出发点 */
.page-about .about-why-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
}

@media (min-width: 880px) {
  .page-about .about-why-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(36px, 5vw, 84px);
    align-items: start;
  }
}

.page-about .about-why-rail {
  min-width: 0;
}

/* 版本时间线 */
.page-about .about-journey .section-head {
  max-width: 46em;
}

.page-about .about-timeline {
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0 0 0 30px;
  list-style: none;
  border-left: 1px solid var(--line-strong);
}

.page-about .about-node {
  position: relative;
  padding-bottom: clamp(24px, 3.2vw, 34px);
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bronze);
  box-shadow: 0 0 0 4px var(--sand);
  transition: background-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-about .about-node:hover::before {
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--sand), 0 0 0 5px var(--bronze-light);
}

.page-about .about-node-ver {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--clay);
}

.page-about .about-node:hover .about-node-title {
  color: var(--clay-deep);
}

.page-about .about-node-title {
  margin: 6px 0 8px;
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 700;
  line-height: 1.42;
  color: var(--ink);
  transition: color .22s var(--ease);
}

.page-about .about-node-desc {
  margin: 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--stone);
}

/* 色谱 */
.page-about .about-palette-figure {
  margin: 0 0 clamp(20px, 3vw, 30px);
  border: 1px solid var(--line-strong);
  background: var(--paper);
  overflow: hidden;
}

.page-about .about-palette-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.92);
}

.page-about .about-swatches {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 760px) {
  .page-about .about-swatches {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.page-about .about-swatch {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  min-height: 152px;
  padding: 20px 18px 18px;
}

.page-about .about-swatch--clay {
  background: var(--clay);
  color: var(--paper);
}

.page-about .about-swatch--terracotta {
  background: var(--terracotta);
  color: var(--ink);
}

.page-about .about-swatch--sand {
  background: var(--sand);
  color: var(--ink);
}

.page-about .about-swatch--bronze {
  background: var(--bronze);
  color: var(--paper);
}

.page-about .about-swatch--gold {
  background: var(--gold);
  color: var(--ink);
}

.page-about .about-swatch-name {
  margin: 0;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
}

.page-about .about-swatch-hex {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  opacity: .82;
}

.page-about .about-copy {
  align-self: flex-start;
  margin-top: 2px;
  padding: 5px 11px;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  background: transparent;
  color: inherit;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  line-height: 1.4;
  cursor: pointer;
  opacity: .75;
  transition: opacity .2s var(--ease), background-color .2s var(--ease);
}

.page-about .about-copy:hover,
.page-about .about-copy:focus-visible {
  opacity: 1;
}

.page-about .about-palette-text {
  margin-top: clamp(22px, 3vw, 34px);
  max-width: 46em;
}

/* 服务范围 */
.page-about .about-reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
}

@media (min-width: 880px) {
  .page-about .about-reach-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-about .about-reach-lead {
  min-width: 0;
}

.page-about .about-stats {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-about .about-stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 2px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-stat:first-child {
  border-top: 1px solid var(--line);
}

.page-about .about-stat-num {
  flex: 0 0 auto;
  min-width: 2.4em;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  line-height: 1;
  color: var(--clay);
}

.page-about .about-stat-label {
  font-size: 14px;
  line-height: 1.65;
  color: var(--stone);
}

/* 团队 */
.page-about .about-people .section-head {
  max-width: 46em;
}

.page-about .about-people-figure {
  margin: 0 0 clamp(22px, 3vw, 36px);
  border: 1px solid var(--line-strong);
  background: var(--paper);
  overflow: hidden;
}

.page-about .about-people-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.86) sepia(.06);
}

.page-about .about-teams {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 2.8vw, 28px);
}

@media (min-width: 860px) {
  .page-about .about-teams {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }
}

.page-about .about-team-card {
  position: relative;
  min-width: 0;
  padding: 32px 22px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 7px 7px 0 var(--sand), 8px 8px 0 var(--line);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}

.page-about .about-team-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 9px 9px 0 var(--sand), 10px 10px 0 var(--line-strong);
}

.page-about .about-team-tag {
  position: absolute;
  top: 0;
  right: 0;
  padding: 5px 13px 5px 16px;
  background: var(--bronze);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  clip-path: polygon(10px 0, 100% 0, 100% 100%, 0 100%);
}

.page-about .about-team-name {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.page-about .about-team-role {
  margin: 0 0 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--clay);
}

.page-about .about-team-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--stone);
}

/* 下一步 */
.page-about .about-next {
  border-top: 1px solid var(--line);
}

.page-about .about-next-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

@media (min-width: 780px) {
  .page-about .about-next-inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
    gap: 34px;
  }
}

.page-about .about-next-inner .section-title {
  margin-top: 8px;
}

.page-about .about-next .btn-row {
  flex-wrap: wrap;
}

/* 窄屏收尾 */
@media (max-width: 480px) {
  .page-about .about-orbit {
    width: min(100%, 300px);
    box-shadow: 0 0 0 8px var(--paper), 0 0 0 9px var(--line-strong);
  }

  .page-about .about-stat {
    flex-wrap: wrap;
    gap: 6px;
  }

  .page-about .about-swatch {
    min-height: 128px;
    padding: 16px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node::before,
  .page-about .about-node-title,
  .page-about .about-team-card,
  .page-about .about-copy,
  .page-about .breadcrumbs a {
    transition: none;
  }

  .page-about .about-team-card:hover {
    transform: none;
  }
}