.page-about {
  --ab-pad: clamp(20px, 4vw, 44px);
  background: var(--ink-900);
  color: var(--body);
}

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

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink-700);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .ab-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.42;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 82% 6%, rgba(182, 255, 59, 0.16), transparent 62%),
    linear-gradient(180deg, rgba(7, 28, 22, 0.55) 0%, rgba(7, 28, 22, 0.9) 70%, var(--ink-900) 100%);
}

.page-about .ab-hero__inner {
  position: relative;
  z-index: 2;
  padding-top: clamp(22px, 4vw, 40px);
  padding-bottom: clamp(40px, 6vw, 78px);
}

.page-about .ab-hero__tag {
  margin: clamp(22px, 4vw, 38px) 0 0;
}

.page-about .ab-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.4vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .ab-hero__lead {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 46ch;
  padding-left: 16px;
  border-left: 3px solid var(--lime);
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.72;
  color: var(--body);
}

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: clamp(26px, 5vw, 46px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .ab-hero__stat-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .ab-hero__stat-label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--body-dim);
}

@media (min-width: 720px) {
  .page-about .ab-hero__stats {
    grid-template-columns: repeat(4, minmax(0, auto));
    gap: 0;
    justify-content: start;
  }
  .page-about .ab-hero__stat {
    padding: 0 26px;
    border-left: 1px solid var(--line);
  }
  .page-about .ab-hero__stat:first-child {
    padding-left: 0;
    border-left: 0;
  }
  .page-about .ab-hero__title {
    transform: scaleX(0.95);
    transform-origin: left center;
  }
}

/* ---------- 通用章节骨架 ---------- */
.page-about .ab-sec {
  position: relative;
  padding: clamp(44px, 7vw, 94px) 0;
}

.page-about .ab-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .ab-kicker::before {
  content: "";
  flex: none;
  width: 26px;
  height: 2px;
  background: var(--orange);
}

.page-about .ab-h2 {
  margin: 0 0 18px;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .ab-more {
  margin: 22px 0 0;
}

.page-about .ab-link {
  display: inline-block;
  padding-bottom: 3px;
  color: var(--lime);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

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

/* ---------- 01 品牌起点与地区 ---------- */
.page-about .ab-split {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  grid-template-columns: minmax(0, 1fr);
}

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

.page-about .ab-slab {
  margin: 0 0 20px;
  padding: 15px 18px;
  background: var(--paper);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  border-left: 6px solid var(--orange);
  box-shadow: var(--shadow-card);
  transform: rotate(-2deg);
}

.page-about .ab-slab strong {
  display: block;
  margin-top: 4px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 900;
}

.page-about .ab-cities {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-about .ab-cities li {
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--body-dim);
  border: 1px solid var(--line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .ab-cities li:hover {
  color: var(--lime);
  border-color: var(--lime);
}

.page-about .ab-body p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body);
}

.page-about .ab-net {
  display: block;
  width: 100%;
  height: auto;
  margin: 26px 0 10px;
}

.page-about .ab-net__links line {
  stroke: var(--line);
  stroke-width: 1.2;
}

.page-about .ab-net__node {
  fill: var(--slate);
  transition: fill 0.25s var(--ease);
}

.page-about .ab-net__node--hub {
  fill: var(--lime);
}

.page-about .ab-net:hover .ab-net__node--hub {
  fill: var(--orange);
}

.page-about .ab-net__note {
  margin: 0 0 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--body-dim);
}

@media (min-width: 900px) {
  .page-about .ab-split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 48px;
    align-items: start;
  }
  .page-about .ab-aside {
    padding-top: 6px;
  }
}

/* ---------- 02 团队 ---------- */
.page-about .ab-team {
  background: var(--ink-800);
}

.page-about .ab-team__grid {
  display: grid;
  gap: clamp(24px, 4vw, 38px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .ab-roles {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-role {
  padding: 4px 0 4px 16px;
  border-left: 2px solid var(--line);
  transition: border-color 0.2s var(--ease);
}

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

.page-about .ab-role h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--paper);
}

.page-about .ab-role h3 span {
  margin-right: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--lime);
}

.page-about .ab-role p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--body-dim);
}

.page-about .ab-team__figure {
  margin: 0;
}

.page-about .ab-flow {
  display: grid;
  gap: 0;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: clamp(16px, 3vw, 26px);
  list-style: none;
  background: var(--ink-700);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

.page-about .ab-flow__step {
  padding: 16px 0;
  border-top: 1px dashed var(--line);
}

.page-about .ab-flow__step:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .ab-flow__step:last-child {
  padding-bottom: 0;
}

.page-about .ab-flow__num {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-900);
  background: var(--orange);
}

.page-about .ab-flow__step h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--paper);
}

.page-about .ab-flow__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--body-dim);
}

@media (min-width: 900px) {
  .page-about .ab-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 860px) {
  .page-about .ab-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .ab-flow__step {
    padding: 0 18px;
    border-top: 0;
    border-left: 1px dashed var(--line);
  }
  .page-about .ab-flow__step:first-child {
    padding-left: 0;
    border-left: 0;
  }
  .page-about .ab-flow__step:last-child {
    padding-right: 0;
  }
}

/* ---------- 03 时间轴 ---------- */
.page-about .ab-timeline {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-step {
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(0, 1fr);
  padding: 22px 0;
  border-top: 1px dashed var(--line);
}

.page-about .ab-step:last-child {
  border-bottom: 1px dashed var(--line);
}

.page-about .ab-step__year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--slate);
  transition: color 0.2s var(--ease);
}

.page-about .ab-step:hover .ab-step__year,
.page-about .ab-step:focus-within .ab-step__year {
  color: var(--lime);
}

.page-about .ab-step__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--paper);
}

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

@media (min-width: 780px) {
  .page-about .ab-step {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 0 34px;
    padding: 28px 0;
  }
  .page-about .ab-step__year {
    position: relative;
    padding-left: 22px;
  }
  .page-about .ab-step__year::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 9px;
    height: 9px;
    transform: translateY(-50%);
    background: var(--orange);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(255, 106, 42, 0.16);
    transition: background-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  }
  .page-about .ab-step:hover .ab-step__year::before {
    background: var(--lime);
    box-shadow: 0 0 0 5px rgba(182, 255, 59, 0.18);
  }
}

/* ---------- 04 合作生态 ---------- */
.page-about .ab-coop {
  background: var(--ink-700);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-coop__lead {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body);
}

.page-about .ab-coop__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(24px, 4vw, 36px);
}

.page-about .ab-coop__card {
  padding: 20px;
  background: var(--ink-900);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .ab-coop__card:hover {
  transform: translateY(-4px);
  border-color: var(--lime);
}

.page-about .ab-coop__count {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .ab-coop__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--paper);
}

.page-about .ab-coop__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--body-dim);
}

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

@media (min-width: 1020px) {
  .page-about .ab-coop__grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  .page-about .ab-coop__card {
    grid-column: span 2;
  }
  .page-about .ab-coop__card:nth-child(4),
  .page-about .ab-coop__card:nth-child(5) {
    grid-column: span 3;
  }
}

/* ---------- 05 常用人群 ---------- */
.page-about .ab-people {
  padding-bottom: clamp(64px, 9vw, 118px);
}

.page-about .ab-people__grid {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .ab-person {
  padding: 20px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  transition: border-left-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .ab-person:hover {
  border-left-color: var(--orange);
  background: var(--ink-700);
}

.page-about .ab-person__tag {
  margin: 0 0 12px;
}

.page-about .ab-person h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .ab-person p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--body-dim);
}

@media (min-width: 760px) {
  .page-about .ab-people__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1060px) {
  .page-about .ab-people__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
  .page-about .ab-person:nth-child(2) {
    transform: translateY(22px);
  }
  .page-about .ab-person:nth-child(3) {
    transform: translateY(-8px);
  }
  .page-about .ab-person:nth-child(5) {
    transform: translateY(16px);
  }
}

/* ---------- 06 收束 ---------- */
.page-about .ab-close {
  background: var(--ink-800);
}

.page-about .ab-close__panel {
  position: relative;
  padding: clamp(22px, 4vw, 44px);
  background: var(--ink-700);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

.page-about .ab-close__panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 74px;
  height: 4px;
  background: var(--lime);
}

.page-about .ab-close__list {
  display: grid;
  gap: 12px;
  margin: 0 0 clamp(22px, 3vw, 30px);
  padding: 0;
  list-style: none;
}

.page-about .ab-close__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--body);
}

.page-about .ab-close__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--lime);
}

.page-about .ab-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 0 0 clamp(20px, 3vw, 28px);
  padding: 16px 0;
  border-top: 1px dashed var(--line);
  border-bottom: 1px dashed var(--line);
  font-size: 13.5px;
  color: var(--body-dim);
}

.page-about .ab-contact a {
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

.page-about .ab-contact a:hover,
.page-about .ab-contact a:focus-visible {
  border-bottom-color: var(--lime);
}

.page-about .ab-contact .num {
  color: var(--paper);
}

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

@media (min-width: 720px) {
  .page-about .ab-close__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-coop__card:hover,
  .page-about .ab-person:nth-child(2),
  .page-about .ab-person:nth-child(3),
  .page-about .ab-person:nth-child(5) {
    transform: none;
  }
  .page-about .ab-slab {
    transform: none;
  }
}
<<<END>>>