.page-about {
  --ab-edge: rgba(154, 165, 160, .24);
  --ab-glass: rgba(36, 48, 43, .58);
  --ab-body: rgba(245, 247, 244, .8);
  --ab-gap: clamp(28px, 5vw, 72px);
  display: block;
  background: var(--ink);
  color: var(--score);
  font-family: var(--f-body);
}

/* ---------- 面包屑 ---------- */
.page-about .ab-crumbs {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 20px var(--gutter) 0;
}

/* ---------- 首屏框景 ---------- */
.page-about .ab-hero {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(20px, 3.4vw, 48px) var(--gutter) clamp(34px, 5vw, 76px);
}

.page-about .ab-frame {
  position: relative;
  border: 1px solid var(--ab-edge);
  padding: clamp(24px, 4vw, 64px) clamp(20px, 3.6vw, 56px);
  background:
    linear-gradient(148deg, rgba(16, 58, 92, .58) 0%, rgba(10, 12, 11, .94) 60%),
    repeating-linear-gradient(90deg, rgba(15, 122, 76, .1) 0 2px, transparent 2px 46px);
}

.page-about .ab-frame::before,
.page-about .ab-frame::after {
  content: "";
  position: absolute;
  width: 76px;
  height: 3px;
}

.page-about .ab-frame::before {
  top: -1px;
  left: -1px;
  background: var(--whistle);
}

.page-about .ab-frame::after {
  right: -1px;
  bottom: -1px;
  background: var(--pitch);
}

.page-about .ab-hero-tag {
  color: var(--mint);
}

.page-about .ab-hero h1 {
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 74px);
  line-height: 1.04;
  letter-spacing: -.02em;
  margin: 14px 0 22px;
  max-width: 15ch;
}

.page-about .ab-hero-lead {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--ab-body);
  max-width: 60ch;
  margin: 0 0 34px;
}

.page-about .ab-hero-stats {
  list-style: none;
  margin: 0 0 34px;
  padding: 20px 0 0;
  border-top: 1px solid var(--ab-edge);
  display: flex;
  flex-wrap: wrap;
  gap: 18px 0;
}

.page-about .ab-hero-stats li {
  flex: 1 1 130px;
  min-width: 110px;
  padding-right: 16px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-about .ab-hs-v {
  font-family: var(--f-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(28px, 4.6vw, 52px);
  line-height: 1;
  color: var(--whistle);
}

.page-about .ab-hs-k {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--smoke);
}

.page-about .ab-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 双色过渡带 ---------- */
.page-about .ab-seam {
  height: 6px;
  max-width: var(--maxw);
  margin: 0 auto;
  background: linear-gradient(90deg, var(--canal) 0%, var(--canal) 30%, var(--pitch) 62%, var(--whistle) 100%);
}

/* ---------- 主分栏 ---------- */
.page-about .ab-split {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(38px, 5.4vw, 82px) var(--gutter) clamp(52px, 7vw, 104px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 56px);
}

@media (min-width: 960px) {
  .page-about .ab-split {
    grid-template-columns: minmax(210px, .92fr) minmax(0, 2.62fr);
    align-items: start;
  }
}

/* ---------- 阶段时间轴 ---------- */
.page-about .ab-axis {
  min-width: 0;
}

@media (min-width: 960px) {
  .page-about .ab-axis {
    position: sticky;
    top: 34px;
  }
}

.page-about .ab-axis-label {
  display: block;
  margin: 0 0 16px 18px;
  color: var(--pitch);
}

.page-about .ab-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
  border-left: 1px solid var(--ab-edge);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .ab-node {
  position: relative;
  padding: 12px 12px 12px 14px;
  background: transparent;
  transition: background var(--dur-2) var(--ease);
}

.page-about .ab-node::before {
  content: "";
  position: absolute;
  left: -23.5px;
  top: 19px;
  width: 9px;
  height: 9px;
  background: var(--smoke);
  transition: background var(--dur-1) var(--ease), transform var(--dur-2) var(--ease);
}

.page-about .ab-node:hover,
.page-about .ab-node:focus-within {
  background: var(--ab-glass);
}

.page-about .ab-node:hover::before,
.page-about .ab-node:focus-within::before {
  background: var(--whistle);
  transform: scale(1.4);
}

.page-about .ab-node:focus-visible {
  outline: 2px solid var(--whistle);
  outline-offset: -2px;
}

.page-about .ab-node-num {
  display: block;
  font-family: var(--f-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--smoke);
}

.page-about .ab-node-name {
  display: block;
  margin-top: 3px;
  font-family: var(--f-head);
  font-weight: 800;
  font-size: 15px;
  line-height: 1.3;
  letter-spacing: -.01em;
}

.page-about .ab-node-note {
  display: block;
  font-size: 13px;
  line-height: 1.7;
  color: var(--smoke);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height var(--dur-3) var(--ease), opacity var(--dur-2) var(--ease), margin-top var(--dur-2) var(--ease);
}

.page-about .ab-node:hover .ab-node-note,
.page-about .ab-node:focus-within .ab-node-note {
  max-height: 180px;
  opacity: 1;
  margin-top: 8px;
}

@media (max-width: 959px) {
  .page-about .ab-node-note {
    max-height: none;
    opacity: 1;
    margin-top: 6px;
  }
}

/* ---------- 叙述列 ---------- */
.page-about .ab-stream {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(40px, 5.4vw, 84px);
}

.page-about .ab-block {
  min-width: 0;
}

.page-about .ab-block .label {
  display: block;
  margin: 0 0 10px;
  color: var(--pitch);
}

.page-about .ab-block h3 {
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(23px, 3.1vw, 38px);
  line-height: 1.14;
  letter-spacing: -.02em;
  margin: 0 0 18px;
  max-width: 22ch;
}

.page-about .ab-block p {
  font-size: 16px;
  line-height: 1.82;
  color: var(--ab-body);
  max-width: 62ch;
  margin: 0 0 16px;
}

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

.page-about .ab-inline-note {
  font-size: 14px !important;
  color: var(--smoke) !important;
}

.page-about .ab-inline-note a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(134, 214, 174, .45);
  transition: border-color var(--dur-1) var(--ease), color var(--dur-1) var(--ease);
}

.page-about .ab-inline-note a:hover {
  color: var(--whistle);
  border-bottom-color: var(--whistle);
}

/* ---------- 双线比分块 ---------- */
.page-about .ab-dual {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  margin-top: 26px;
}

@media (min-width: 620px) {
  .page-about .ab-dual {
    grid-template-columns: 386fr 138fr;
  }
}

.page-about .ab-dual-item {
  min-width: 0;
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-about .ab-dual-item--league {
  background: linear-gradient(135deg, var(--pitch) 0%, #0a5836 100%);
}

.page-about .ab-dual-item--friendly {
  background: linear-gradient(135deg, var(--canal) 0%, #092439 100%);
}

.page-about .ab-dual-num {
  font-family: var(--f-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1;
  color: var(--score);
}

.page-about .ab-dual-key {
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(245, 247, 244, .82);
}

/* ---------- 图文区 ---------- */
.page-about .ab-media-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
  margin-top: 8px;
}

@media (min-width: 880px) {
  .page-about .ab-media-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, .74fr);
    align-items: start;
  }
}

.page-about .ab-figure {
  margin: 0 0 20px;
}

.page-about .ab-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--ab-edge);
  filter: saturate(.92) contrast(1.04);
}

.page-about .ab-figure--tall img {
  aspect-ratio: 12 / 14;
}

.page-about .ab-figure--wide img {
  aspect-ratio: 14 / 9;
}

.page-about .ab-figure--panorama img {
  aspect-ratio: 16 / 9;
}

.page-about .ab-figure .media-caption {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--smoke);
  letter-spacing: .02em;
}

.page-about .ab-block--editors .ab-figure--wide {
  margin-bottom: 26px;
}

/* ---------- 事实清单 ---------- */
.page-about .ab-facts {
  list-style: none;
  margin: 22px 0;
  padding: 0;
  border-top: 1px solid var(--ab-edge);
}

.page-about .ab-facts li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--ab-edge);
  font-size: 15px;
  color: var(--ab-body);
}

.page-about .ab-facts .num {
  font-family: var(--f-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 30px);
  line-height: 1;
  color: var(--whistle);
  min-width: 3em;
}

/* ---------- 团队角色 ---------- */
.page-about .ab-roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  margin-top: 6px;
}

@media (min-width: 760px) {
  .page-about .ab-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .ab-role {
  min-width: 0;
  padding: 22px 20px 24px;
  background: var(--ab-glass);
  border-top: 2px solid var(--ab-edge);
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.page-about .ab-role--editors {
  border-top-color: var(--pitch);
}

.page-about .ab-role--data {
  border-top-color: var(--canal);
}

.page-about .ab-role--fans {
  border-top-color: var(--whistle);
}

.page-about .ab-role-num {
  font-family: var(--f-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  color: var(--score);
}

.page-about .ab-role-name {
  font-family: var(--f-head);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -.01em;
  margin: 0;
}

.page-about .ab-role p {
  font-size: 14px;
  line-height: 1.72;
  color: var(--ab-body);
  margin: 0;
  max-width: none;
}

.page-about .ab-role-scale {
  display: flex;
  height: 8px;
  margin-top: 2px;
}

.page-about .ab-rs--editors {
  flex: 14;
  background: var(--pitch);
}

.page-about .ab-rs--data {
  flex: 6;
  background: var(--canal);
}

.page-about .ab-rs--fans {
  flex: 4;
  background: var(--whistle);
}

.page-about .ab-scale-caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--smoke);
  max-width: 62ch;
}

/* ---------- 合作生态文字块 ---------- */
.page-about .ab-block--network .ab-figure--panorama {
  margin: 26px 0;
}

.page-about .ab-org-grid {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 2px;
}

.page-about .ab-org {
  min-width: 0;
  padding: 16px 18px;
  background: rgba(36, 48, 43, .5);
  border-left: 2px solid var(--ab-edge);
  display: flex;
  flex-direction: column;
  gap: 5px;
  transition: background var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}

.page-about .ab-org:hover,
.page-about .ab-org:focus-visible {
  background: rgba(15, 122, 76, .22);
  border-left-color: var(--pitch);
  outline: none;
}

.page-about .ab-org:focus-visible {
  box-shadow: inset 0 0 0 2px var(--whistle);
}

.page-about .ab-org-name {
  font-family: var(--f-head);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -.01em;
  color: var(--score);
}

.page-about .ab-org-dir {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--smoke);
  transition: color var(--dur-2) var(--ease);
}

.page-about .ab-org:hover .ab-org-dir,
.page-about .ab-org:focus-visible .ab-org-dir {
  color: var(--whistle);
}

/* ---------- 访客价值 ---------- */
.page-about .ab-audience {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  margin-top: 6px;
}

@media (min-width: 780px) {
  .page-about .ab-audience {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .ab-aud {
  min-width: 0;
  padding: 22px 20px 24px;
  background: var(--ab-glass);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .ab-aud h4 {
  font-family: var(--f-head);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: -.01em;
  margin: 0;
  color: var(--score);
}

.page-about .ab-aud p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ab-body);
  margin: 0;
  max-width: none;
  flex: 1 1 auto;
}

.page-about .ab-aud-link {
  align-self: flex-start;
  font-size: 13px;
  letter-spacing: .08em;
  text-decoration: none;
  color: var(--mint);
  border-bottom: 1px solid rgba(134, 214, 174, .4);
  padding-bottom: 2px;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-2) var(--ease);
}

.page-about .ab-aud-link::after {
  content: " →";
}

.page-about .ab-aud-link:hover,
.page-about .ab-aud-link:focus-visible {
  color: var(--whistle);
  border-bottom-color: var(--whistle);
}

/* ---------- 结尾引导 ---------- */
.page-about .ab-cta {
  position: relative;
  padding: clamp(28px, 4vw, 52px) clamp(22px, 3.4vw, 48px);
  background: linear-gradient(120deg, rgba(16, 58, 92, .62) 0%, rgba(15, 122, 76, .34) 100%);
  border-left: 4px solid var(--whistle);
}

.page-about .ab-cta h2 {
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.16;
  letter-spacing: -.02em;
  margin: 0 0 14px;
  max-width: 24ch;
}

.page-about .ab-cta p {
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(245, 247, 244, .86);
  max-width: 58ch;
  margin: 0 0 24px;
}

.page-about .ab-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 窄屏收尾 ---------- */
@media (max-width: 620px) {
  .page-about .ab-frame::before,
  .page-about .ab-frame::after {
    width: 52px;
  }

  .page-about .ab-hero-stats li {
    flex: 1 1 46%;
    padding-right: 10px;
  }

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

  .page-about .ab-org {
    padding: 14px 14px;
  }
}