.page-about {
  --ab-amber-soft: rgba(224, 138, 43, .10);
  --ab-amber-mid: rgba(224, 138, 43, .34);
  --ab-jade-soft: rgba(30, 127, 114, .09);
  --ab-clay-line: rgba(138, 90, 51, .28);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .ab-crumbs {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding-top: clamp(1rem, 2.4vw, 1.6rem);
  font-size: .82rem;
  color: var(--ink-soft);
}
.page-about .ab-crumbs a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-about .ab-crumbs a:hover {
  color: var(--amber-deep);
  border-bottom-color: var(--ab-amber-mid);
}
.page-about .ab-crumbs__sep {
  color: var(--clay);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  padding: clamp(1.6rem, 4.4vw, 3rem) 0 clamp(1.6rem, 4vw, 2.4rem);
  position: relative;
}
.page-about .ab-hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: .4rem;
  width: 46px;
  height: 3px;
  background: var(--cinnabar);
  border-radius: var(--r-pill);
}
.page-about .ab-hero__eyebrow {
  margin: 0 0 .7rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--amber-deep);
}
.page-about .ab-hero__title {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 5.4vw, 2.9rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--ink);
  max-width: 18em;
}
.page-about .ab-hero__lead {
  max-width: 44em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-soft);
  margin: 0 0 1.4rem;
}
.page-about .ab-hero__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .9rem;
}
.page-about .ab-hero__track li {
  display: flex;
  align-items: baseline;
  gap: .42rem;
  padding: .38rem .8rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--paper-2);
}
.page-about .ab-hero__year {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 500;
  color: var(--amber-deep);
}
.page-about .ab-hero__event {
  font-size: .8rem;
  color: var(--ink-soft);
}

/* ---------- 章节索引条 ---------- */
.page-about .index-nav.ab-index {
  display: flex;
  gap: .3rem;
  overflow-x: auto;
  padding: .55rem 0;
  margin-bottom: clamp(1rem, 3vw, 1.8rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}
.page-about .index-nav.ab-index::-webkit-scrollbar {
  display: none;
}
.page-about .ab-index__link {
  flex: 0 0 auto;
  white-space: nowrap;
  padding: .42rem .85rem;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .02em;
  color: var(--ink-soft);
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease);
}
.page-about .ab-index__link:hover {
  background: var(--paper-2);
  color: var(--ink);
}
.page-about .ab-index__link.is-current {
  background: var(--amber-light);
  color: var(--ink);
}

/* ---------- 章节通用骨架 ---------- */
.page-about .ab-chapter {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  padding: clamp(2rem, 5.6vw, 3.4rem) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 6rem;
}
.page-about .ab-chapter__num {
  font-family: var(--font-mono);
  font-size: .92rem;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--amber-deep);
  position: relative;
  padding-left: 1.6rem;
}
.page-about .ab-chapter__num::before {
  content: "";
  position: absolute;
  left: 0;
  top: .52em;
  width: 1rem;
  height: 1px;
  background: var(--amber);
}
.page-about .ab-chapter__title {
  margin: 0 0 .9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.34rem, 3.6vw, 2rem);
  line-height: 1.28;
  letter-spacing: -.015em;
  color: var(--ink);
}
.page-about .ab-chapter__body p {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink);
  max-width: 40em;
}
.page-about .ab-chapter__body > p:last-child {
  margin-bottom: 0;
}

/* ---------- 旁注 ---------- */
.page-about .ab-aside {
  align-self: start;
  padding: 1rem 1.1rem 1.1rem;
  background: var(--ab-amber-soft);
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}
.page-about .ab-aside__label {
  margin: 0 0 .35rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--amber-deep);
}
.page-about .ab-aside__num {
  margin: 0 0 .4rem;
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 500;
  line-height: 1.1;
  color: var(--ink);
}
.page-about .ab-aside__num span {
  font-size: .78rem;
  margin-left: .3rem;
  color: var(--ink-soft);
}
.page-about .ab-aside__note {
  margin: 0;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 图片 ---------- */
.page-about .ab-texture,
.page-about .ab-workbench {
  margin: 1.4rem 0 0;
}
.page-about .ab-texture img {
  object-fit: cover;
  border-radius: var(--r-md);
  filter: saturate(.7);
}
.page-about .ab-workbench {
  margin-top: 0;
  margin-bottom: 1.4rem;
}
.page-about .ab-workbench img {
  object-fit: cover;
  border-radius: var(--r-md);
}
.page-about .ab-map {
  margin: 0;
}
.page-about .ab-map img {
  object-fit: cover;
  border-radius: var(--r-md);
  background: var(--ab-jade-soft);
}

/* ---------- 团队三组 ---------- */
.page-about .ab-team {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}
.page-about .ab-team__item {
  padding: 1rem 1.1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--lantern);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.page-about .ab-team__item:hover {
  border-color: var(--ab-amber-mid);
  transform: translateY(-2px);
}
.page-about .ab-team__name {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  color: var(--ink);
  position: relative;
  padding-left: .9rem;
}
.page-about .ab-team__name::before {
  content: "";
  position: absolute;
  left: 0;
  top: .45em;
  width: .42rem;
  height: .42rem;
  border-radius: 50%;
  background: var(--jade);
}
.page-about .ab-team__item p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 三校步骤 ---------- */
.page-about .ab-steps {
  list-style: none;
  margin: 1.2rem 0 1.2rem;
  padding: 0;
  display: grid;
  gap: .85rem;
}
.page-about .ab-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .85rem;
  align-items: start;
  padding: .95rem 1rem;
  border-radius: var(--r-md);
  background: var(--paper-2);
}
.page-about .ab-step__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  padding: .22rem .6rem;
  border-radius: var(--r-pill);
  background: var(--ink);
  color: var(--lantern);
  white-space: nowrap;
}
.page-about .ab-step__title {
  margin: 0 0 .35rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .98rem;
  color: var(--ink);
}
.page-about .ab-step__text p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 里程碑横向刻度轴 ---------- */
.page-about .ab-miles {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
}
.page-about .ab-mile {
  position: relative;
  padding-top: 1.9rem;
}
.page-about .ab-mile::before {
  content: "";
  position: absolute;
  top: .82rem;
  left: 10px;
  right: 0;
  height: 1px;
  background: var(--line-2);
}
.page-about .ab-mile:last-child::before {
  background: linear-gradient(to right, var(--line-2), transparent);
}
.page-about .ab-mile__node {
  position: absolute;
  top: calc(.82rem - 5px);
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px var(--paper);
  transition: background .2s var(--ease), transform .2s var(--ease);
}
.page-about .ab-mile:hover .ab-mile__node {
  background: var(--cinnabar);
  transform: scale(1.25);
}
.page-about .ab-mile__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .74rem;
  font-weight: 500;
  letter-spacing: .06em;
  padding: .16rem .62rem;
  border-radius: var(--r-pill);
  background: var(--amber-light);
  color: var(--ink);
  margin-bottom: .55rem;
}
.page-about .ab-mile__card {
  padding: .85rem 1rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--lantern);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}
.page-about .ab-mile:hover .ab-mile__card {
  transform: translateY(-3px);
  border-color: var(--ab-amber-mid);
}
.page-about .ab-mile__title {
  margin: 0 0 .4rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .96rem;
  line-height: 1.4;
  color: var(--ink);
}
.page-about .ab-mile__card p {
  margin: 0;
  font-size: .86rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 覆盖与协作 ---------- */
.page-about .ab-figures {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: .8rem 2.4rem;
}
.page-about .ab-figure {
  display: flex;
  flex-direction: column;
  gap: .15rem;
}
.page-about .ab-figure__num {
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 500;
  line-height: 1.1;
  color: var(--jade);
}
.page-about .ab-figure__label {
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--ink-soft);
}
.page-about .ab-chapter--media .ab-chapter__media {
  margin-top: .4rem;
}

/* ---------- 四类主题 ---------- */
.page-about .ab-themes {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: .9rem;
}
.page-about .ab-theme {
  position: relative;
  padding: 1.1rem 1.1rem 1.2rem;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--paper);
  overflow: hidden;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.page-about .ab-theme::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--clay);
}
.page-about .ab-theme--route::before {
  background: var(--jade);
}
.page-about .ab-theme--adapt::before {
  background: var(--amber);
}
.page-about .ab-theme--version::before {
  background: var(--cinnabar);
}
.page-about .ab-theme:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(28, 26, 23, .07);
}
.page-about .ab-theme__num {
  display: block;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--ink-soft);
  margin-bottom: .5rem;
}
.page-about .ab-theme__title {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.08rem;
  color: var(--ink);
}
.page-about .ab-theme p {
  margin: 0 0 .9rem;
  font-size: .88rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

/* ---------- 底部通道 ---------- */
.page-about .ab-cta {
  padding-bottom: clamp(2.4rem, 6vw, 4rem);
}
.page-about .ab-cta__inner {
  padding: clamp(1.6rem, 4.4vw, 2.6rem);
  border-radius: var(--r-lg);
  background: var(--ink);
  color: var(--lantern);
}
.page-about .ab-cta__title {
  margin: 0 0 .7rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.24rem, 3.4vw, 1.7rem);
  color: var(--lantern);
}
.page-about .ab-cta__text {
  margin: 0 0 1.3rem;
  max-width: 42em;
  font-size: .94rem;
  line-height: 1.8;
  color: rgba(255, 253, 247, .78);
}
.page-about .ab-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .ab-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-themes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-miles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.6rem 1.4rem;
  }
}

@media (min-width: 900px) {
  .page-about .ab-chapter {
    grid-template-columns: 68px minmax(0, 1fr) 236px;
    gap: 0 2.2rem;
    align-items: start;
  }
  .page-about .ab-chapter__num {
    padding-left: 0;
    padding-top: .5rem;
    text-align: left;
  }
  .page-about .ab-chapter__num::before {
    display: none;
  }
  .page-about .ab-chapter__num::after {
    content: "";
    position: absolute;
    left: 1.1rem;
    top: 2.4rem;
    bottom: -3.4rem;
    width: 1px;
    background: linear-gradient(to bottom, var(--ab-amber-mid), rgba(224, 138, 43, 0));
  }
  .page-about .ab-chapter--road .ab-chapter__num::after,
  .page-about .ab-chapter--media .ab-chapter__num::after {
    bottom: -1rem;
  }
  .page-about .ab-chapter--media {
    grid-template-columns: 68px minmax(0, 1fr) minmax(0, 288px);
  }
}

@media (min-width: 1040px) {
  .page-about .ab-miles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .ab-themes {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-team__item,
  .page-about .ab-theme,
  .page-about .ab-mile__card,
  .page-about .ab-mile__node,
  .page-about .ab-index__link {
    transition: none;
  }
  .page-about .ab-team__item:hover,
  .page-about .ab-theme:hover,
  .page-about .ab-mile:hover .ab-mile__card,
  .page-about .ab-mile:hover .ab-mile__node {
    transform: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</result>