.page-about {
  --ab-pad: clamp(56px, 7vw, 104px);
  --ab-gap: clamp(20px, 3vw, 34px);
  background: var(--ink);
  color: var(--text);
}

.page-about .ab-sec {
  position: relative;
  padding-block: var(--ab-pad);
}

.page-about .ab-sec--ink {
  background:
    radial-gradient(90% 70% at 12% 0%, rgba(30, 90, 69, 0.35), transparent 66%),
    var(--ink);
}

.page-about .ab-sec--panel {
  background: linear-gradient(180deg, var(--ink-deep) 0%, var(--panel) 100%);
}

.page-about .ab-sec--paper {
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding: clamp(26px, 3.4vw, 38px) 0 clamp(52px, 7vw, 92px);
  overflow: hidden;
  background:
    radial-gradient(110% 85% at 84% -6%, rgba(0, 224, 184, 0.16), transparent 60%),
    linear-gradient(178deg, var(--ink-deep) 0%, var(--ink) 58%, #0d2b21 100%);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -40%;
  width: 46vw;
  height: 46vw;
  max-width: 560px;
  max-height: 560px;
  border: 1px solid rgba(0, 224, 184, 0.12);
  transform: rotate(18deg);
  pointer-events: none;
}

.page-about .crumbs {
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-about .crumbs a {
  color: var(--text-soft);
  text-decoration: none;
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  color: var(--neon);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(30px, 4vw, 52px);
  align-items: end;
}

.page-about .ab-hero__lead .kicker {
  margin: 0 0 14px;
  color: var(--neon-soft);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
}

.page-about .display {
  margin: 0;
  font-size: clamp(38px, 6.6vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper);
}

.page-about .display em {
  font-style: normal;
  color: var(--neon);
}

.page-about .ab-hero__lead .lede {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .ab-index {
  padding: clamp(20px, 2.6vw, 28px);
  background: linear-gradient(168deg, rgba(23, 69, 47, 0.96), rgba(11, 31, 24, 0.92));
  border: 1px solid rgba(0, 224, 184, 0.26);
}

.page-about .ab-index__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--neon-soft);
  text-transform: uppercase;
}

.page-about .ab-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-index__list a {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: baseline;
  padding: 10px 4px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-soft);
  font-size: 15px;
  text-decoration: none;
  transition: color 180ms ease, padding-left 180ms ease;
}

.page-about .ab-index__list li:last-child a {
  border-bottom: 0;
}

.page-about .ab-index__list a:hover,
.page-about .ab-index__list a:focus-visible {
  color: var(--neon);
  padding-left: 8px;
  outline: none;
}

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

.page-about .ab-index__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-about .ab-index__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(0, 224, 184, 0.2);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-faint);
}

/* ---------- 通用标题 ---------- */
.page-about .ab-sec__head {
  max-width: 46em;
  margin-bottom: clamp(30px, 4vw, 52px);
}

.page-about .ab-sec__head .kicker {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--neon-soft);
}

.page-about .ab-h2 {
  margin: 0;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  font-weight: 900;
  color: var(--paper);
}

.page-about .ab-sec__intro {
  margin: 16px 0 0;
  max-width: 36em;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .ab-sec--paper .kicker {
  color: var(--teal);
}

.page-about .ab-sec--paper .ab-h2 {
  color: var(--ink);
}

.page-about .ab-sec--paper .ab-sec__intro {
  color: rgba(11, 31, 24, 0.72);
}

/* ---------- 两栏 ---------- */
.page-about .ab-split {
  display: grid;
  gap: clamp(28px, 4vw, 54px);
  align-items: start;
}

.page-about .ab-split__text .kicker {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--neon-soft);
}

.page-about .ab-split__text .ab-h2 {
  margin-bottom: clamp(16px, 2.2vw, 24px);
}

.page-about .prose p {
  margin: 0 0 16px;
  max-width: 37em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-soft);
}

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

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

.page-about .fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
}

.page-about .fig__cap {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-faint);
}

.page-about .ab-origin__fig,
.page-about .ab-desk__fig {
  border-left: 2px solid var(--neon);
  padding-left: 12px;
}

.page-about .ab-factline {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-about .ab-factline li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .ab-factline__k {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--neon);
  min-width: 5.4em;
}

.page-about .ab-factline__v {
  font-size: 14px;
  color: var(--text-soft);
}

/* ---------- 时间线 ---------- */
.page-about .ab-tl-wrap {
  position: relative;
  padding-left: 56px;
}

.page-about .ab-tl__axis {
  position: absolute;
  left: 0;
  top: 0;
  width: 48px;
  height: 100%;
  pointer-events: none;
}

.page-about .ab-tl {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
}

.page-about .ab-tl__card {
  position: relative;
  padding: clamp(20px, 2.6vw, 28px);
  background: rgba(11, 31, 24, 0.05);
  border-left: 2px solid rgba(11, 31, 24, 0.18);
  transition: background 200ms ease, border-color 200ms ease, transform 200ms ease;
}

.page-about .ab-tl__card:hover,
.page-about .ab-tl__card:focus-visible {
  background: rgba(11, 31, 24, 0.08);
  border-left-color: var(--orange);
  transform: translateX(4px);
  outline: none;
}

.page-about .ab-tl__card:focus-visible {
  box-shadow: 0 0 0 2px var(--teal);
}

.page-about .ab-tl__stage {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--teal);
}

.page-about .ab-tl__title {
  margin: 0 0 10px;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.35;
  font-weight: 800;
  color: var(--ink);
}

.page-about .ab-tl__body {
  margin: 0;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.76;
  color: rgba(11, 31, 24, 0.74);
}

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

.page-about .ab-tl__fig .fig__cap {
  color: rgba(11, 31, 24, 0.55);
}

/* ---------- 原则 ---------- */
.page-about .ab-rules {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .ab-rule {
  position: relative;
  padding: clamp(22px, 2.8vw, 30px);
  padding-left: clamp(22px, 2.8vw, 30px);
  background: linear-gradient(160deg, var(--panel), var(--ink-deep));
  border: 1px solid rgba(0, 224, 184, 0.16);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  transition: border-color 200ms ease, transform 200ms ease;
}

.page-about .ab-rule::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 38px;
  background: var(--neon);
  transition: height 220ms ease;
}

.page-about .ab-rule:hover {
  border-color: rgba(0, 224, 184, 0.42);
  transform: translateY(-3px);
}

.page-about .ab-rule:hover::before {
  height: 100%;
}

.page-about .ab-rule__num {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .ab-rule__title {
  margin: 0 0 10px;
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .ab-rule__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--text-dim);
}

/* ---------- 编辑台 ---------- */
.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(24px, 3vw, 34px);
  background: var(--line-soft);
}

.page-about .ab-stats .stat {
  padding: 16px 14px;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .stat__num {
  font-family: var(--mono);
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
}

.page-about .stat__num--warm {
  color: var(--orange);
}

.page-about .stat__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-dim);
}

/* ---------- 合作生态 ---------- */
.page-about .ab-partners__head {
  max-width: 44em;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .ab-partners__head .kicker {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--neon-soft);
}

.page-about .ab-partners__intro {
  margin: 16px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.76;
  color: var(--text-soft);
}

.page-about .ab-partners__grid {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .ab-partner {
  padding: clamp(20px, 2.6vw, 28px);
  background: rgba(18, 54, 42, 0.9);
  border: 1px solid rgba(0, 224, 184, 0.18);
  border-top: 2px solid var(--amber);
}

.page-about .ab-partner__num {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-about .ab-partner__title {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 800;
  color: var(--paper);
}

.page-about .ab-partner__body {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-about .ab-award {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 14px;
  margin-top: clamp(24px, 3.2vw, 36px);
  padding: clamp(20px, 2.6vw, 26px);
  border-left: 2px solid var(--orange);
  background: linear-gradient(100deg, rgba(255, 122, 47, 0.1), transparent 72%);
}

.page-about .ab-award__text {
  margin: 0;
  flex: 1 1 260px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--text-soft);
}

.page-about .ab-award__text strong {
  color: var(--paper);
  font-weight: 800;
}

/* ---------- 使用场景 ---------- */
.page-about .ab-cards {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .ab-card {
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 2.8vw, 30px);
  background: rgba(255, 255, 255, 0.6);
  border-top: 3px solid var(--teal);
  transition: transform 200ms ease, border-color 200ms ease, background 200ms ease;
}

.page-about .ab-card:hover {
  transform: translateY(-3px);
  border-top-color: var(--orange);
  background: rgba(255, 255, 255, 0.85);
}

.page-about .ab-card__tag {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--teal);
}

.page-about .ab-card__title {
  margin: 0 0 12px;
  font-size: clamp(17px, 1.9vw, 20px);
  line-height: 1.4;
  font-weight: 800;
  color: var(--ink);
}

.page-about .ab-card__body {
  margin: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(11, 31, 24, 0.74);
  flex: 1 1 auto;
}

.page-about .ab-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 0;
}

.page-about .ab-card__links a {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(30, 90, 69, 0.35);
  padding-bottom: 2px;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-about .ab-card__links a:hover,
.page-about .ab-card__links a:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .ab-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ab-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.88fr);
  }

  .page-about .ab-index {
    transform: translateY(-10px);
  }

  .page-about .ab-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
  }

  .page-about .ab-split--flip {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr);
  }

  .page-about .ab-split--flip .ab-split__text {
    order: 2;
  }

  .page-about .ab-split--flip .ab-split__fig {
    order: 1;
  }

  .page-about .ab-tl-wrap {
    padding-left: 72px;
  }

  .page-about .ab-tl__axis {
    width: 64px;
  }

  .page-about .ab-tl__body {
    max-width: 44em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-rule,
  .page-about .ab-card,
  .page-about .ab-tl__card,
  .page-about .ab-index__list a {
    transition: none;
  }

  .page-about .ab-rule:hover,
  .page-about .ab-card:hover,
  .page-about .ab-tl__card:hover {
    transform: none;
  }
}
<<<END>>>