.page-about {
  background: var(--ink);
  color: var(--paper);
  --ab-line: rgba(53, 224, 208, 0.26);
  --ab-panel: #16362f;
  overflow-x: hidden;
}

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

.page-about .ab-sec {
  padding: clamp(52px, 8vw, 112px) 0;
}

.page-about .ab-sec--team {
  background: linear-gradient(180deg, rgba(18, 48, 42, 0.55), rgba(10, 27, 23, 0));
}

.page-about .ab-sec--flow {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(244, 247, 245, 0.02);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding-top: clamp(92px, 13vw, 164px);
  padding-bottom: clamp(36px, 5vw, 64px);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 82% -12%, rgba(53, 224, 208, 0.17), transparent 62%),
    radial-gradient(80% 60% at 4% 8%, rgba(242, 72, 140, 0.11), transparent 66%);
}

.page-about .ab-hero > .lp-container {
  position: relative;
}

.page-about .ab-hero__title {
  margin: clamp(18px, 3vw, 30px) 0 0;
  font-size: clamp(38px, 6.6vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-about .ab-hero__title em {
  font-style: normal;
  background: var(--neon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .ab-hero__lead {
  max-width: 34em;
  margin-top: clamp(22px, 3.4vw, 38px);
  font-size: clamp(15.5px, 1.6vw, 18px);
  line-height: 1.85;
  letter-spacing: 0.01em;
  color: rgba(244, 247, 245, 0.82);
}

.page-about .ab-stats {
  display: flex;
  flex-wrap: wrap;
  margin: clamp(28px, 4.4vw, 48px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .ab-stats > li {
  flex: 1 1 44%;
  min-width: 0;
  padding: 16px 0 0 14px;
  border-left: 1px solid var(--line);
}

.page-about .ab-stats > li:first-child {
  border-left: 0;
  padding-left: 0;
}

.page-about .ab-stats__num {
  display: block;
  font-size: clamp(21px, 3vw, 28px);
  color: var(--amber);
  letter-spacing: 0.06em;
}

.page-about .ab-stats__lab {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

/* ---------- 章节头 ---------- */
.page-about .ab-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(30px, 4.6vw, 60px);
}

.page-about .ab-lead {
  max-width: 40em;
  margin-top: 16px;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(244, 247, 245, 0.74);
}

/* ---------- 01 时间轴 ---------- */
.page-about .ab-history {
  display: grid;
  gap: 34px;
}

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

.page-about .ab-tl__item {
  position: relative;
  padding: 0 0 30px 26px;
  border-left: 2px solid var(--ab-line);
}

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

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(242, 166, 59, 0.14);
}

.page-about .ab-tl__stamp {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--mute);
}

.page-about .ab-tl__h {
  margin: 0;
  font-size: 1em;
  font-weight: 400;
}

.page-about .ab-tl__btn {
  display: flex;
  align-items: baseline;
  gap: 12px;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  color: var(--paper);
  font-family: inherit;
  font-size: clamp(18px, 2.4vw, 25px);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -0.005em;
  text-align: left;
  cursor: pointer;
  transition: color 0.28s var(--ease);
}

.page-about .ab-tl__btn:hover,
.page-about .ab-tl__btn:focus-visible {
  color: var(--amber-soft);
}

.page-about .ab-tl__btn::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: var(--cyan);
}

.page-about .ab-tl__btn[aria-expanded="true"]::after {
  content: "–";
  color: var(--rose);
}

.page-about .ab-tl__ver {
  flex: 0 0 auto;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 4px;
}

.page-about .ab-tl__panel {
  padding-top: 12px;
}

.page-about .ab-tl__panel p {
  max-width: 34em;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.72);
}

/* ---------- 图片 ---------- */
.page-about .ab-fig {
  margin: 0;
}

.page-about .ab-fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.page-about .ab-fig .lp-media__cap {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--mute);
}

/* ---------- 02 团队 ---------- */
.page-about .ab-team-wrap {
  display: grid;
  gap: 30px;
}

.page-about .ab-cards {
  display: grid;
  gap: 14px;
  padding-bottom: 26px;
}

.page-about .ab-card {
  padding: 22px 20px 24px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.page-about .ab-card:hover {
  border-color: var(--cyan);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.3);
}

.page-about .ab-card__count {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 9px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink);
  background: var(--amber);
  border-radius: 2px;
}

.page-about .ab-card .lp-h3 {
  margin: 0 0 10px;
}

.page-about .ab-card__txt {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.72);
}

/* ---------- 03 流程 ---------- */
.page-about .ab-flowfig {
  margin: 0 0 clamp(22px, 3vw, 34px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
}

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

.page-about .ab-flowfig .lp-media__cap {
  display: block;
  padding: 12px 16px 14px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mute);
  border-top: 1px solid var(--line);
}

.page-about .ab-flowline {
  display: block;
  width: 100%;
  height: 8px;
  margin-bottom: clamp(18px, 2.6vw, 28px);
  opacity: 0.85;
}

.page-about .ab-steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-step {
  padding: 20px 20px 22px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
}

.page-about .ab-step:nth-child(2) {
  border-left-color: var(--amber);
}

.page-about .ab-step:nth-child(3) {
  border-left-color: var(--rose);
}

.page-about .ab-step__no {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mute);
}

.page-about .ab-step__h {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-about .ab-step__txt {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.72);
}

/* ---------- 04 节奏 ---------- */
.page-about .ab-rhythm {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .ab-rhythm > li {
  display: grid;
  gap: 6px;
  padding: 18px 18px 20px;
  background: var(--ink-2);
  transition: background 0.28s var(--ease);
}

.page-about .ab-rhythm > li:hover {
  background: var(--ab-panel);
}

.page-about .ab-rhythm__k {
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .ab-rhythm__v {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.78);
}

/* ---------- 05 合作 ---------- */
.page-about .ab-sec--collab {
  background:
    linear-gradient(120deg, rgba(242, 72, 140, 0.1), transparent 46%),
    linear-gradient(300deg, rgba(53, 224, 208, 0.12), transparent 52%);
}

.page-about .ab-collab {
  display: grid;
  gap: 18px;
  padding-top: 10px;
}

.page-about .ab-collab__num {
  font-size: clamp(72px, 16vw, 150px);
  line-height: 0.82;
  letter-spacing: -0.04em;
  background: var(--neon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .ab-collab .lp-h2 {
  margin: 0;
}

.page-about .ab-collab__txt {
  max-width: 38em;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 247, 245, 0.74);
}

.page-about .ab-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 32px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-about .ab-stats > li {
    flex: 1 1 22%;
  }

  .page-about .ab-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    padding-bottom: 48px;
  }

  .page-about .ab-cards > *:nth-child(even) {
    margin-top: 34px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-head {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: clamp(16px, 2.4vw, 28px);
    align-items: start;
  }

  .page-about .ab-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .ab-rhythm > li {
    grid-template-columns: 138px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
    padding: 22px 24px;
  }

  .page-about .ab-collab {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(20px, 4vw, 56px);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about .ab-history {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-about .ab-team-wrap {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: clamp(30px, 4vw, 56px);
    align-items: start;
  }

  .page-about .ab-fig--team {
    margin-top: 48px;
  }
}

@media (min-width: 1280px) {
  .page-about .ab-tl__item {
    padding-left: 32px;
  }

  .page-about .ab-tl__btn {
    max-width: 40em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-card,
  .page-about .ab-rhythm > li,
  .page-about .ab-tl__btn {
    transition: none;
  }
}
<<<END>>>