.page-about {
  --ab-gap: 18px;
  --ab-line-x: 11px;
  position: relative;
  overflow-x: hidden;
}

/* ---------- 面包屑点缀 ---------- */
.page-about .crumb {
  padding-top: 8px;
}
.page-about .crumb__link {
  color: var(--gold);
  text-decoration: none;
}
.page-about .crumb__link:hover {
  color: var(--gold-soft);
}
.page-about .crumb__item {
  color: var(--text-dim);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding: 34px 0 46px;
  background-image:
    repeating-linear-gradient(to right, var(--line-soft) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(to bottom, var(--line-soft) 0 1px, transparent 1px 96px);
  background-position: 0 0;
  border-bottom: 1px solid var(--line);
}
.page-about .ab-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -40px;
  width: 240px;
  height: 240px;
  border-radius: 48% 52% 62% 38% / 44% 40% 60% 56%;
  background: radial-gradient(circle at 40% 40%, rgba(216, 166, 87, .22), transparent 68%);
  pointer-events: none;
}

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

.page-about .ab-hero__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 8.4vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--white);
}
.page-about .ab-hero__lede {
  margin: 18px 0 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}
.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-about .ab-hero__side {
  align-self: end;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(160deg, var(--panel) 0%, var(--panel-2) 100%);
  box-shadow: var(--shadow-panel);
}
.page-about .ab-hero__side-title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--gold-soft);
  letter-spacing: .04em;
}
.page-about .ab-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .ab-fact {
  display: grid;
  gap: 2px;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
}
.page-about .ab-fact__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
}
.page-about .ab-fact__label {
  font-size: 12.5px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ---------- 主壳：目录 + 正文 ---------- */
.page-about .ab-shell {
  display: block;
  padding-top: 34px;
  padding-bottom: 60px;
}

.page-about .ab-toc {
  margin-bottom: 30px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(14, 38, 55, .62);
}
.page-about .ab-toc__head {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gold);
}
.page-about .ab-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
}
.page-about .ab-toc .toc__link {
  display: inline-block;
  padding: 4px 0;
  font-size: 13px;
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.page-about .ab-toc .toc__link:hover,
.page-about .ab-toc .toc__link.is-current {
  color: var(--gold);
  border-bottom-color: var(--gold);
}
.page-about .ab-toc__note {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-dim);
}
.page-about .ab-toc__note a {
  color: var(--mint);
  text-decoration: none;
}

/* ---------- 章节通用 ---------- */
.page-about .ab-sec {
  padding-top: 34px;
  margin-top: 34px;
  border-top: 1px solid var(--line);
}
.page-about .ab-sec:first-child {
  padding-top: 0;
  margin-top: 0;
  border-top: 0;
}
.page-about .ab-sec__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  margin-bottom: 22px;
}
.page-about .ab-sec__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  padding-top: 7px;
  letter-spacing: .06em;
}
.page-about .ab-sec .section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 5vw, 30px);
  line-height: 1.25;
  color: var(--white);
  letter-spacing: -0.01em;
}
.page-about .ab-sec .section__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  max-width: 46ch;
}

/* ---------- 受众 ---------- */
.page-about .ab-audience {
  display: grid;
  gap: var(--ab-gap);
}
.page-about .ab-aud {
  padding: 20px 18px;
  border-radius: var(--radius-l);
  background: var(--panel);
  border: 1px solid var(--line);
}
.page-about .ab-aud__title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.4;
  color: var(--white);
}
.page-about .ab-aud__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

/* ---------- 配图 ---------- */
.page-about .ab-figure {
  margin: 0 0 26px;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel-2);
}
.page-about .ab-figure .figure__media {
  margin: 0;
}
.page-about .ab-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  opacity: .88;
}
.page-about .ab-figure .figure__cap {
  margin: 0;
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--text-dim);
  border-top: 1px solid var(--line);
}

/* ---------- 时间线 ---------- */
.page-about .ab-timeline {
  list-style: none;
  margin: 0 0 26px;
  padding: 0 0 0 30px;
  position: relative;
}
.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: var(--ab-line-x);
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--gold), var(--line) 70%);
}
.page-about .ab-node {
  position: relative;
  margin-bottom: 14px;
}
.page-about .ab-node::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 16px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(216, 166, 87, .14);
}
.page-about .ab-node__box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
  padding: 14px 16px;
}
.page-about .ab-node__box[open] {
  background: var(--panel);
}
.page-about .ab-node__sum {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: baseline;
  cursor: pointer;
  list-style: none;
}
.page-about .ab-node__sum::-webkit-details-marker {
  display: none;
}
.page-about .ab-node__ver {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
}
.page-about .ab-node__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.4;
}
.page-about .ab-node__more {
  font-size: 11.5px;
  color: var(--text-dim);
  white-space: nowrap;
}
.page-about .ab-node__sum:hover .ab-node__more {
  color: var(--mint);
}
.page-about .ab-node__text {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

/* ---------- 新旧路径对照 ---------- */
.page-about .ab-paths {
  display: grid;
  gap: var(--ab-gap);
}
.page-about .ab-path {
  padding: 18px 16px;
  border-radius: var(--radius);
  border: 1px dashed var(--line);
  background: rgba(10, 30, 45, .6);
}
.page-about .ab-path--new {
  border-style: solid;
  border-color: var(--mint);
  background: linear-gradient(150deg, rgba(63, 224, 184, .12), rgba(10, 30, 45, .8));
}
.page-about .ab-path__label {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--text-dim);
}
.page-about .ab-path--new .ab-path__label {
  color: var(--mint);
}
.page-about .ab-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.page-about .ab-step {
  position: relative;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  font-size: 12.5px;
  color: var(--text);
  background: var(--panel-2);
}
.page-about .ab-step + .ab-step::before {
  content: "›";
  position: absolute;
  left: -9px;
  color: var(--line);
  font-size: 13px;
}
.page-about .ab-step--hot {
  border-color: var(--mint);
  color: var(--white);
  background: rgba(63, 224, 184, .1);
}
.page-about .ab-path__foot {
  margin: 12px 0 0;
  font-size: 12.5px;
  color: var(--text-dim);
}
.page-about .ab-path--new .ab-path__foot {
  color: var(--mint);
}

/* ---------- 资料来源 ---------- */
.page-about .ab-src {
  display: grid;
  gap: 22px;
}
.page-about .ab-layers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .ab-layer {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
}
.page-about .ab-layer__no {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 12.5px;
}
.page-about .ab-layer__title {
  margin: 2px 0 6px;
  font-family: var(--font-display);
  font-size: 15.5px;
  color: var(--white);
}
.page-about .ab-layer__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text);
}
.page-about .ab-double {
  margin-top: 16px;
  padding: 16px 18px;
  border-left: 3px solid var(--mint);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(63, 224, 184, .07);
}
.page-about .ab-double__title {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--mint);
}
.page-about .ab-double__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}
.page-about .ab-src__figure {
  margin: 0;
}
.page-about .ab-src__figure img {
  aspect-ratio: 4 / 3;
}

/* ---------- 团队三条线 ---------- */
.page-about .ab-lines {
  display: grid;
  gap: var(--ab-gap);
}
.page-about .ab-line {
  padding: 18px 18px 20px;
  border-radius: var(--radius-l);
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 2px solid var(--gold);
}
.page-about .ab-line__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--gold-deep);
  line-height: 1;
}
.page-about .ab-line__title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--white);
}
.page-about .ab-line__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text);
}

.page-about .ab-band-note {
  margin: 18px 0 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text);
}
.page-about .ab-band-note a {
  color: var(--mint);
  text-decoration: none;
}
.page-about .ab-band-note a:hover {
  color: var(--gold);
}

/* ---------- 覆盖规模 ---------- */
.page-about .ab-scope {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 22px;
}
.page-about .ab-scope__stat {
  padding: 14px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
  display: grid;
  gap: 4px;
}
.page-about .ab-scope__num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--gold-soft);
  line-height: 1;
}
.page-about .ab-scope__unit {
  font-size: 12.5px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* 覆盖版图带 */
.page-about .ab-band {
  margin-bottom: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    repeating-linear-gradient(to right, var(--line-soft) 0 1px, transparent 1px 44px),
    var(--panel-2);
  overflow: hidden;
}
.page-about .ab-band__axis {
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(3, 11, 18, .5);
}
.page-about .ab-band__tick {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
}
.page-about .ab-band__regions {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
}
.page-about .ab-region {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: center;
  padding: 13px 14px;
  border-left: 3px solid transparent;
  background: rgba(14, 38, 55, .55);
}
.page-about .ab-region:nth-child(odd) {
  border-left-color: var(--gold);
}
.page-about .ab-region:nth-child(even) {
  border-left-color: var(--line);
}
.page-about .ab-region__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--mint);
}
.page-about .ab-region__name {
  font-size: 14px;
  color: var(--white);
}

/* 批次 */
.page-about .ab-batches {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--panel);
}
.page-about .ab-batches__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--white);
}
.page-about .ab-batches__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-about .ab-batch {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 12px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}
.page-about .ab-batch:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-about .ab-batch__t {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--gold);
}
.page-about .ab-batch__d {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text);
}
.page-about .ab-batches__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text);
}
.page-about .ab-batches__note a {
  color: var(--mint);
  text-decoration: none;
}

/* ---------- 服务标准 ---------- */
.page-about .ab-standards {
  display: grid;
  gap: 12px;
}
.page-about .ab-std {
  position: relative;
  padding: 18px 16px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--panel), var(--panel-2));
  overflow: hidden;
}
.page-about .ab-std::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--gold);
}
.page-about .ab-std__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
}
.page-about .ab-std__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.4;
  color: var(--white);
}
.page-about .ab-std__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text);
}

/* ---------- 伙伴 ---------- */
.page-about .ab-partners {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.page-about .ab-partner {
  padding: 16px 14px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
}
.page-about .ab-partner__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--mint);
  line-height: 1;
}
.page-about .ab-partner__title {
  margin: 10px 0 6px;
  font-family: var(--font-display);
  font-size: 14.5px;
  line-height: 1.4;
  color: var(--white);
}
.page-about .ab-partner__text {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 收束 ---------- */
.page-about .ab-close {
  margin-top: 26px;
  padding: 24px 20px;
  border-radius: var(--radius-l);
  border: 1px solid var(--gold-deep);
  background:
    repeating-linear-gradient(to right, rgba(28, 58, 80, .45) 0 1px, transparent 1px 72px),
    linear-gradient(140deg, rgba(216, 166, 87, .16), rgba(7, 26, 40, .9));
}
.page-about .ab-close__text {
  margin: 0;
  max-width: 44ch;
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.75;
  color: var(--gold-soft);
}
.page-about .ab-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-about .ab-hero {
    padding: 48px 0 58px;
  }
  .page-about .ab-audience {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-lines {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-standards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-scope {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .ab-band__regions {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
  .page-about .ab-region {
    grid-template-columns: 1fr;
    gap: 6px;
    border-left: 0;
    border-top: 3px solid var(--line);
    text-align: left;
  }
  .page-about .ab-region:nth-child(odd) {
    border-left-color: transparent;
    border-top-color: var(--gold);
  }
  .page-about .ab-region:nth-child(even) {
    border-left-color: transparent;
    border-top-color: var(--line);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-about .ab-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 44px;
    align-items: end;
  }
  .page-about .ab-shell {
    display: grid;
    grid-template-columns: 186px minmax(0, 1fr);
    gap: 46px;
    padding-top: 46px;
    padding-bottom: 90px;
  }
  .page-about .ab-toc {
    position: sticky;
    top: 28px;
    align-self: start;
    margin-bottom: 0;
    background: transparent;
    border: 0;
    border-left: 1px solid var(--line);
    border-radius: 0;
    padding: 0 0 0 16px;
  }
  .page-about .ab-toc__list {
    display: grid;
    gap: 2px;
  }
  .page-about .ab-sec {
    padding-top: 46px;
    margin-top: 46px;
  }
  .page-about .ab-src {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 30px;
    align-items: start;
  }
  .page-about .ab-partners {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .ab-close {
    padding: 32px 30px;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .page-about .ab-toc .toc__link {
    transition: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</｜｜DSML｜｜ calls>