.page-about {
  --about-edge: rgba(198, 255, 61, .28);
  --about-soft: rgba(243, 247, 242, .72);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: clamp(16px, 2.4vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 4vw, 48px) 0 clamp(20px, 3vw, 34px);
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(75, 63, 143, .38) 0%, rgba(6, 26, 20, 0) 62%),
    linear-gradient(180deg, var(--pitch-deep) 0%, var(--pitch) 100%);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(36px, 8.4vw, 78px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--ivory);
  transform: skewY(-.6deg);
}

.page-about .about-hero__accent {
  color: var(--lime);
  display: inline-block;
}

.page-about .about-hero__lede {
  margin: clamp(20px, 3vw, 30px) auto 0;
  max-width: 62ch;
  color: var(--ink-soft);
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.78;
}

.page-about .about-hero__tags {
  list-style: none;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.page-about .about-hero__rule {
  display: flex;
  gap: 0;
  margin-top: clamp(28px, 4vw, 46px);
  height: 26px;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
}

.page-about .about-hero__rule span {
  display: block;
  width: 1px;
  height: 10px;
  margin: 0 clamp(6px, 2vw, 22px);
  background: var(--line-strong);
}

.page-about .about-hero__rule span:nth-child(4n + 1) {
  height: 24px;
  background: var(--about-edge);
}

.page-about .about-hero__rule span:nth-child(2n) {
  height: 15px;
}

/* ---------- 宽幅图带 ---------- */
.page-about .about-band {
  padding: clamp(20px, 3vw, 34px) 0 0;
  background: var(--pitch);
}

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

/* ---------- 分栏：侧栏 + 主栏 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-rail {
  padding: clamp(20px, 3vw, 28px);
  background: var(--glass-strong);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
}

.page-about .about-rail .plaque__label {
  display: block;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-about .about-rail__list li {
  display: grid;
  gap: 4px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}

.page-about .about-rail__list li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-about .about-rail .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  letter-spacing: -.02em;
}

.page-about .about-rail .stat__value.is-home { color: var(--amber); }
.page-about .about-rail .stat__value.is-away { color: var(--teal); }

.page-about .about-rail .stat__value small {
  font-size: .42em;
  margin-left: 4px;
  letter-spacing: .02em;
  color: var(--ink-soft);
}

.page-about .about-rail .stat__label {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-dim);
}

.page-about .about-rail__foot {
  margin: 20px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-about .about-split__main h2 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.15;
  color: var(--ivory);
}

.page-about .about-split__main h2::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin: 18px 0 0;
  background: linear-gradient(90deg, var(--lime), rgba(198, 255, 61, 0));
}

.page-about .about-split__main a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-line);
}

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

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

/* ---------- 数据运营 ---------- */
.page-about .about-ops {
  background: linear-gradient(180deg, rgba(13, 15, 14, 0) 0%, rgba(13, 15, 14, .72) 42%, rgba(13, 15, 14, 0) 100%);
}

.page-about .about-ops__head {
  display: grid;
  gap: 10px;
  align-items: end;
}

.page-about .about-ops__note {
  font-size: 13px;
  color: var(--teal);
  margin: 0;
}

.page-about .about-ops__grid {
  margin-top: clamp(26px, 4vw, 44px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 38px);
}

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

.page-about .op-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  counter-reset: none;
}

.page-about .op-steps__item {
  position: relative;
  padding: clamp(18px, 2.6vw, 24px) clamp(18px, 2.6vw, 26px) clamp(18px, 2.6vw, 24px) clamp(56px, 8vw, 78px);
  background: rgba(38, 54, 50, .32);
  border-left: 2px solid transparent;
  transition: background 200ms var(--ease), border-color 200ms var(--ease);
}

.page-about .op-steps__item:hover {
  background: rgba(38, 54, 50, .52);
  border-left-color: var(--lime);
}

.page-about .op-steps__no {
  position: absolute;
  left: clamp(16px, 2.4vw, 24px);
  top: clamp(20px, 2.8vw, 26px);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: .04em;
}

.page-about .op-steps__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: clamp(17px, 2.4vw, 21px);
  color: var(--ivory);
  transform: skewY(-.5deg);
}

.page-about .op-steps__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-dim);
}

/* ---------- 团队 ---------- */
.page-about .about-team__lede {
  margin-top: 14px;
  max-width: 62ch;
  color: var(--ink-soft);
}

.page-about .about-team__tabs {
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-about .about-team__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__panel {
  padding-top: clamp(22px, 3vw, 32px);
  max-width: 72ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-team__panel p {
  margin: 0 0 16px;
}

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

.page-about .about-team__panel a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-line);
}

.page-about .about-team__count {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5.4vw, 44px);
  font-weight: 700;
  line-height: 1;
  margin: 0 0 14px !important;
  color: var(--lime);
}

.page-about .about-team__count.is-home { color: var(--amber); }
.page-about .about-team__count.is-away { color: var(--teal); }

/* ---------- 覆盖与规模 ---------- */
.page-about .about-scale {
  background:
    radial-gradient(90% 70% at 12% 0%, rgba(75, 63, 143, .34) 0%, rgba(6, 26, 20, 0) 60%),
    var(--pitch);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-scale__head {
  max-width: 68ch;
}

.page-about .about-scale__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.12;
  color: var(--ivory);
  transform: skewY(-.5deg);
}

.page-about .about-scale__head .lede {
  margin-top: 16px;
  color: var(--ink-soft);
}

.page-about .about-scale__grid {
  margin-top: clamp(28px, 4vw, 46px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-scale__card {
  padding: clamp(22px, 3vw, 30px);
  background: var(--charcoal);
  border-left: 3px solid transparent;
  transition: border-color 200ms var(--ease);
}

.page-about .about-scale__card:hover {
  border-left-color: var(--lime);
}

.page-about .about-scale__value {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(34px, 6vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--lime);
}

.page-about .about-scale__value.is-home { color: var(--amber); }
.page-about .about-scale__value.is-away { color: var(--teal); }

.page-about .about-scale__value small {
  font-size: .38em;
  margin-left: 4px;
  color: var(--ink-soft);
}

.page-about .about-scale__card h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 17px;
  color: var(--ivory);
}

.page-about .about-scale__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-dim);
}

/* ---------- 版本演进 ---------- */
.page-about .about-version__note {
  font-size: 13px;
  color: var(--lime);
  margin: 0;
}

.page-about .about-version__layout {
  margin-top: clamp(28px, 4vw, 46px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
}

.page-about .v-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .v-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--teal) 0%, var(--lime) 46%, var(--indigo) 100%);
  opacity: .7;
}

.page-about .v-timeline__item {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 40px);
}

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

.page-about .v-timeline__marker {
  position: absolute;
  left: -26px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--pitch);
  border: 2px solid var(--lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 61, .12);
}

.page-about .v-timeline__body {
  padding-left: clamp(12px, 2vw, 20px);
}

.page-about .v-timeline__body .plaque__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
  border-left: 3px solid var(--amber);
  padding-left: 8px;
  margin-bottom: 10px;
}

.page-about .v-timeline__body h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(18px, 2.6vw, 23px);
  line-height: 1.3;
  color: var(--ivory);
}

.page-about .v-timeline__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-dim);
}

.page-about .v-timeline__body a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-line);
}

.page-about .about-version__figure {
  margin: 0;
  align-self: start;
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .about-eco__col h2 {
  margin: 10px 0 16px;
  font-family: var(--font-head);
  font-size: clamp(24px, 3.8vw, 34px);
  line-height: 1.18;
  color: var(--ivory);
}

.page-about .about-eco__col p {
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .about-eco__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--line);
}

.page-about .about-eco__list li {
  padding: 18px 0 18px clamp(14px, 2vw, 20px);
  border-bottom: 1px solid var(--line);
  border-left: 3px solid var(--slate);
  background: rgba(38, 54, 50, .22);
}

.page-about .about-eco__list li:nth-child(1) { border-left-color: var(--lime); }
.page-about .about-eco__list li:nth-child(2) { border-left-color: var(--amber); }
.page-about .about-eco__list li:nth-child(3) { border-left-color: var(--teal); }

.page-about .about-eco__list p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-dim);
}

.page-about .about-eco__notice {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .about-eco__notice a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-line);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta__band {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  align-items: center;
  padding: clamp(26px, 4vw, 40px);
}

.page-about .about-cta__text h2 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.2;
  color: var(--charcoal);
}

.page-about .about-cta__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(13, 15, 14, .78);
}

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

/* ---------- 窄屏保护 ---------- */
.page-about .about-split,
.page-about .about-ops__grid,
.page-about .about-scale__grid,
.page-about .about-version__layout,
.page-about .about-eco__grid,
.page-about .about-cta__band {
  min-width: 0;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ---------- 中屏 ---------- */
@media (min-width: 720px) {
  .page-about .about-scale__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-ops__head {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-about .about-hero__inner {
    align-items: flex-start;
    text-align: left;
  }

  .page-about .about-hero__lede {
    margin-left: 0;
  }

  .page-about .about-hero__tags {
    justify-content: flex-start;
  }

  .page-about .about-hero__rule {
    justify-content: flex-start;
    padding-left: max(16px, calc((100vw - var(--shell)) / 2));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-about .about-split {
    grid-template-columns: minmax(260px, 4fr) minmax(0, 9fr);
    align-items: start;
  }

  .page-about .about-split__rail {
    position: sticky;
    top: 96px;
  }

  .page-about .about-ops__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-about .about-version__layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-version__figure {
    position: sticky;
    top: 96px;
  }

  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 68px);
  }

  .page-about .about-cta__band {
    grid-template-columns: minmax(0, 1fr) auto;
  }

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

@media (min-width: 1200px) {
  .page-about .about-scale__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>