.page-about {
  --about-r: 28px;
  --about-r-sm: 18px;
  --about-line: rgba(11, 31, 58, 0.1);
  --about-shadow: 0 16px 40px rgba(11, 31, 58, 0.08);
  background: var(--glacier);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 18px 0 0;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 14px;
  padding-bottom: 8px;
}

.page-about .about-hero__eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .about-hero__title {
  margin: 0;
  font-size: clamp(32px, 8.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.022em;
  font-weight: 900;
  color: var(--abyss);
  max-width: 20ch;
}

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

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__stats li {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--mist);
  border-radius: var(--about-r-sm);
}

.page-about .about-hero__num {
  font-size: 24px;
  font-weight: 700;
  color: var(--abyss);
  line-height: 1.2;
}

.page-about .about-hero__unit {
  font-size: 13px;
  margin-left: 2px;
  color: var(--gray);
}

.page-about .about-hero__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--gray);
}

.page-about .about-hero__figure {
  max-width: 1320px;
  margin: 26px auto 0;
  padding: 0 18px;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--about-r);
  object-fit: cover;
}

/* ---------- 主体网格 ---------- */
.page-about .about-grid {
  display: grid;
  gap: 20px;
  padding-top: 42px;
  padding-bottom: 60px;
}

.page-about .about-toc {
  border-bottom: 1px solid var(--mist);
  padding-bottom: 14px;
}

.page-about .about-toc__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gray);
}

.page-about .about-toc__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
}

.page-about .about-toc__list li a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 14px;
  border: 1px solid var(--mist);
  border-radius: var(--pill);
  background: #fff;
  color: var(--gray);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-toc__list li a .mono {
  font-size: 11px;
  color: var(--lime);
}

.page-about .about-toc__list li a:hover,
.page-about .about-toc__list li a:focus-visible {
  color: var(--abyss);
  border-color: var(--signal);
}

/* ---------- 章节 ---------- */
.page-about .chapter {
  padding-top: 34px;
  margin-top: 34px;
  border-top: 1px solid var(--mist);
  scroll-margin-top: 130px;
}

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

.page-about .chapter__index {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--lime);
}

.page-about .chapter__title {
  margin: 0 0 16px;
  font-size: clamp(24px, 5.6vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--abyss);
  max-width: 24ch;
}

.page-about .chapter__body p {
  margin: 0 0 14px;
  font-size: 17px;
  line-height: 1.85;
  max-width: 38em;
}

.page-about .chapter__body p:last-child {
  margin-bottom: 0;
}

.page-about .chapter__note {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray);
  max-width: 38em;
}

.page-about .chapter__note a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 起点对照卡 ---------- */
.page-about .dual {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-about .dual__card {
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--mist);
  border-radius: var(--about-r-sm);
}

.page-about .dual__card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--abyss);
}

.page-about .dual__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
}

.page-about .dual__card--accent {
  border-color: rgba(15, 168, 78, 0.35);
  background: linear-gradient(155deg, #ffffff 30%, #edfbf2 100%);
}

/* ---------- 数据链路 ---------- */
.page-about .chain {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .chain__item {
  padding: 16px;
  background: #fff;
  border: 1px solid var(--mist);
  border-radius: var(--about-r-sm);
}

.page-about .chain__item::before {
  content: "";
  display: block;
  width: 28px;
  height: 3px;
  border-radius: 3px;
  background: var(--lime);
  margin-bottom: 12px;
}

.page-about .chain__step {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gray);
}

.page-about .chain__name {
  margin: 6px 0 6px;
  font-size: 16px;
  color: var(--abyss);
}

.page-about .chain__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

.page-about .about-split {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.page-about .about-split__figure {
  margin: 0;
}

.page-about .about-split__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--about-r);
  object-fit: cover;
}

.page-about .about-split__list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  align-content: start;
}

.page-about .about-split__list li {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border-left: 3px solid var(--signal);
  background: #fff;
  border-radius: 0 var(--about-r-sm) var(--about-r-sm) 0;
}

.page-about .about-split__num {
  font-size: 22px;
  font-weight: 700;
  color: var(--abyss);
  line-height: 1.2;
}

.page-about .about-split__text {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 团队 ---------- */
.page-about .team-band {
  display: grid;
  gap: 26px;
  margin-top: 26px;
}

.page-about .donut {
  position: relative;
  width: 208px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  border-radius: 50%;
  background: conic-gradient(
    var(--lime) 0 32.86%,
    var(--sunset) 32.86% 55.71%,
    var(--race) 55.71% 80%,
    var(--mist) 80% 100%
  );
}

.page-about .donut__core {
  position: absolute;
  inset: 27%;
  display: grid;
  place-content: center;
  border-radius: 50%;
  background: var(--glacier);
  text-align: center;
}

.page-about .donut__core strong {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--abyss);
  line-height: 1.1;
}

.page-about .donut__core span {
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 0.16em;
}

.page-about .team-legend {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .team-legend__item {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--mist);
  border-radius: var(--about-r-sm);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about .team-legend__item:hover {
  border-color: rgba(15, 168, 78, 0.45);
  transform: translateY(-2px);
}

.page-about .team-legend__dot {
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-radius: 50%;
}

.page-about .team-legend__dot--a { background: var(--lime); }
.page-about .team-legend__dot--b { background: var(--sunset); }
.page-about .team-legend__dot--c { background: var(--race); }
.page-about .team-legend__dot--d { background: var(--mist); }

.page-about .team-legend__item h3 {
  margin: 0 0 5px;
  font-size: 16px;
  color: var(--abyss);
}

.page-about .team-legend__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 双线时间轴 ---------- */
.page-about .chapter--dark {
  border-top-color: transparent;
}

.page-about .chapter--dark .chapter__title {
  color: var(--abyss);
}

.page-about .rail-panel {
  margin-top: 26px;
  padding: 26px 20px 22px;
  background: var(--abyss);
  border-radius: var(--about-r);
  overflow: hidden;
}

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

.page-about .rail__lane h3 {
  position: relative;
  margin: 0 0 18px;
  padding-left: 14px;
  font-size: 15px;
  letter-spacing: 0.14em;
  color: var(--glacier);
}

.page-about .rail__lane h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  bottom: 2px;
  width: 3px;
  border-radius: 3px;
  background: var(--signal);
}

.page-about .rail__lane--version h3::before {
  background: var(--sunset);
}

.page-about .rail__list {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0 0 0 18px;
  list-style: none;
  border-left: 1px solid rgba(244, 248, 251, 0.22);
}

.page-about .rail__item {
  position: relative;
}

.page-about .rail__item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(56, 242, 122, 0.18);
}

.page-about .rail__lane--version .rail__item::before {
  background: var(--sunset);
  box-shadow: 0 0 0 3px rgba(255, 122, 47, 0.2);
}

.page-about .rail__badge {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--signal);
}

.page-about .rail__lane--version .rail__badge {
  color: var(--sunset);
}

.page-about .rail__item h4 {
  margin: 0 0 5px;
  font-size: 17px;
  color: #fff;
}

.page-about .rail__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(244, 248, 251, 0.78);
}

.page-about .rail-panel__figure {
  margin: 26px -20px -22px;
}

.page-about .rail-panel__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 覆盖范围 ---------- */
.page-about .reach-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .reach-stats__item {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--mist);
  border-radius: var(--about-r-sm);
}

.page-about .reach-stats__num {
  font-size: 26px;
  font-weight: 700;
  color: var(--abyss);
  line-height: 1.2;
}

.page-about .reach-stats__label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--gray);
}

.page-about .pulse {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .pulse li {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--mist);
  border-radius: var(--about-r-sm);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .pulse__tag {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--lime);
  padding-top: 3px;
}

/* ---------- 合作生态 ---------- */
.page-about .partners {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-about .partners__card {
  padding: 20px;
  background: #fff;
  border: 1px solid var(--mist);
  border-radius: 24px;
}

.page-about .partners__num {
  display: block;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--abyss);
}

.page-about .partners__name {
  margin: 6px 0 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--lime);
}

.page-about .partners__card p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 做事方式与 CTA ---------- */
.page-about .chapter--values .chapter__title {
  max-width: 18ch;
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 中屏 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__figure {
    padding: 0 24px;
  }

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

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

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

  .page-about .rail-panel {
    padding: 32px 28px 26px;
  }

  .page-about .rail-panel__figure {
    margin: 30px -28px -26px;
  }
}

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

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

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

/* ---------- 大屏 ---------- */
@media (min-width: 900px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
    gap: 30px;
  }

  .page-about .team-band {
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: center;
    gap: 34px;
  }

  .page-about .rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
  }
}

@media (min-width: 1000px) {
  .page-about .partners {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .partners__card:nth-child(even) {
    margin-top: 22px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-grid {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding-top: 56px;
    padding-bottom: 84px;
  }

  .page-about .about-toc {
    position: sticky;
    top: 112px;
    align-self: start;
    border-bottom: 0;
    padding-bottom: 0;
  }

  .page-about .about-toc__list {
    display: grid;
    gap: 8px;
    overflow: visible;
  }

  .page-about .chapter {
    padding-top: 46px;
    margin-top: 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-legend__item,
  .page-about .about-toc__list li a {
    transition: none;
  }

  .page-about .team-legend__item:hover {
    transform: none;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>