.page-about {
  --ab-rule: rgba(42, 50, 64, 0.85);
  --ab-rule-soft: rgba(42, 50, 64, 0.55);
  --ab-gold-soft: rgba(212, 175, 55, 0.14);
  --ab-cyan-soft: rgba(0, 229, 255, 0.12);
  --ab-pad: 56px;
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 44px;
  isolation: isolate;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -30%;
  left: 22%;
  width: 130%;
  height: 150%;
  background:
    linear-gradient(135deg, var(--ab-gold-soft), rgba(0, 229, 255, 0.07) 52%, transparent 76%),
    repeating-linear-gradient(90deg, rgba(245, 246, 248, 0.03) 0 1px, transparent 1px 42px);
  transform: skewY(-7deg);
  pointer-events: none;
}

.page-about .ab-hero__inner {
  position: relative;
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 22px;
}

.page-about .ab-hero__kicker {
  color: var(--cg-cyan);
  margin: 0 0 14px;
}

.page-about .ab-hero__title {
  font-family: var(--cg-serif);
  font-weight: 800;
  font-size: clamp(30px, 7.6vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--cg-text-strong);
  margin: 0 0 20px;
  max-width: 15em;
}

.page-about .ab-hero__lead {
  font-size: 17px;
  line-height: 1.85;
  color: var(--cg-text);
  max-width: 40em;
  margin: 0 0 26px;
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--ab-rule-soft);
  border-top: 1px solid var(--ab-rule);
  border-bottom: 1px solid var(--ab-rule);
}

.page-about .ab-hero__stats > div {
  background: var(--cg-ink);
  padding: 16px 14px 16px 0;
}

.page-about .ab-hero__stats dt {
  color: var(--cg-text-dim);
  margin: 0 0 6px;
}

.page-about .ab-hero__stats dd {
  margin: 0;
  font-size: 16px;
  color: var(--cg-text);
}

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

.page-about .ab-hero__media {
  aspect-ratio: 3 / 2;
}

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

/* ---------- 共用小节标题微调 ---------- */

.page-about .cg-section__head {
  max-width: 62ch;
}

.page-about .cg-section__title {
  font-family: var(--cg-serif);
  font-weight: 800;
  letter-spacing: -0.01em;
}

/* ---------- 目录缘起 ---------- */

.page-about .ab-why__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 8px;
  border-top: 1px solid var(--ab-rule);
}

.page-about .ab-why__item {
  padding: 26px 0 24px;
  border-bottom: 1px solid var(--ab-rule-soft);
}

.page-about .ab-why__item .cg-label {
  color: var(--cg-gold);
  margin: 0 0 10px;
}

.page-about .ab-why__item h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--cg-text-strong);
  margin: 0 0 10px;
  line-height: 1.4;
}

.page-about .ab-why__item p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cg-text);
  max-width: 36em;
}

/* ---------- 时间轴 ---------- */

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

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 18px;
  width: 1px;
  background: linear-gradient(180deg, var(--cg-gold) 0%, rgba(212, 175, 55, 0.35) 55%, rgba(42, 50, 64, 0) 100%);
}

.page-about .ab-tl__item {
  position: relative;
  padding: 0 0 34px 32px;
}

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--cg-ink);
  border: 1px solid var(--cg-gold);
  box-shadow: 0 0 0 5px rgba(212, 175, 55, 0.07);
}

.page-about .ab-tl__item:last-child {
  padding-bottom: 6px;
}

.page-about .ab-tl__stage {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.page-about .ab-tl__name {
  font-family: var(--cg-serif);
  font-weight: 800;
  font-size: 22px;
  color: var(--cg-text-strong);
  letter-spacing: 0.02em;
  transition: color 180ms var(--cg-ease);
}

.page-about .ab-tl__sub {
  font-family: var(--cg-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cg-cyan);
}

.page-about .ab-tl__item:has(.ab-tl__panel[open]) .ab-tl__name {
  color: var(--cg-gold);
}

.page-about .ab-tl__panel {
  background: linear-gradient(180deg, rgba(20, 25, 34, 0.85), rgba(20, 25, 34, 0.35));
  border: 1px solid var(--ab-rule);
  border-radius: 2px;
  transition: border-color 200ms var(--cg-ease);
}

.page-about .ab-tl__panel[open] {
  border-color: rgba(212, 175, 55, 0.5);
}

.page-about .ab-tl__panel .cg-disclosure__summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 18px;
  font-size: 17px;
  font-weight: 600;
  color: var(--cg-text-strong);
  line-height: 1.6;
}

.page-about .ab-tl__panel .cg-disclosure__summary::-webkit-details-marker {
  display: none;
}

.page-about .ab-tl__panel .cg-disclosure__body {
  padding: 0 18px 18px;
}

.page-about .ab-tl__panel .cg-disclosure__body p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--cg-text);
}

.page-about .ab-tl__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--ab-rule);
}

.page-about .ab-tl__meta > div {
  display: flex;
  gap: 12px;
  font-size: 14px;
}

.page-about .ab-tl__meta dt {
  font-family: var(--cg-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cg-text-dim);
  min-width: 72px;
  padding-top: 2px;
}

.page-about .ab-tl__meta dd {
  margin: 0;
  color: var(--cg-text-strong);
}

/* ---------- 团队 ---------- */

.page-about .ab-team__grid {
  margin-top: 8px;
}

.page-about .ab-team__list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--ab-rule);
}

.page-about .ab-team__card {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--ab-rule-soft);
}

.page-about .ab-team__badge {
  position: relative;
  padding-top: 2px;
}

.page-about .ab-team__badge::after {
  content: "";
  position: absolute;
  left: 0;
  top: 30px;
  bottom: 2px;
  width: 1px;
  background: linear-gradient(180deg, var(--cg-gold), rgba(212, 175, 55, 0));
}

.page-about .ab-team__body h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--cg-text-strong);
  margin: 0 0 6px;
}

.page-about .ab-team__metric {
  font-family: var(--cg-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cg-cyan);
  margin: 0 0 10px;
}

.page-about .ab-team__body p:last-child {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cg-text);
}

.page-about .ab-team__figure {
  margin: 26px 0 0;
}

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

/* ---------- 厂商合作 ---------- */

.page-about .ab-partner__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 12px;
}

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

.page-about .ab-partner__media {
  aspect-ratio: 16 / 10;
}

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

.page-about .ab-table__scroll {
  overflow-x: auto;
  border-top: 2px solid var(--cg-gold);
}

.page-about .ab-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}

.page-about .ab-table caption {
  text-align: left;
  padding: 12px 0 14px;
  color: var(--cg-text-dim);
}

.page-about .ab-table th,
.page-about .ab-table td {
  text-align: left;
  vertical-align: top;
  padding: 15px 16px 15px 0;
  border-bottom: 1px solid var(--ab-rule-soft);
  font-size: 15px;
  line-height: 1.7;
  color: var(--cg-text);
}

.page-about .ab-table thead th {
  font-family: var(--cg-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cg-text-dim);
  border-bottom: 1px solid var(--cg-steel);
  padding-bottom: 10px;
}

.page-about .ab-table tbody th {
  font-weight: 600;
  color: var(--cg-text-strong);
  white-space: nowrap;
}

.page-about .ab-table tbody tr:hover td,
.page-about .ab-table tbody tr:hover th {
  background: rgba(0, 229, 255, 0.04);
}

.page-about .ab-partner__fields {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px dashed var(--ab-rule);
}

.page-about .ab-partner__fieldstitle {
  font-size: 15px;
  color: var(--cg-text-dim);
  margin: 0 0 12px;
}

.page-about .ab-partner__fieldlist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.page-about .ab-partner__fieldlist li {
  font-family: var(--cg-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cg-text-strong);
  padding: 6px 12px;
  border: 1px solid var(--ab-rule);
  border-radius: 2px;
  background: rgba(0, 229, 255, 0.05);
}

.page-about .ab-partner__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cg-text);
}

.page-about .ab-partner__note a,
.page-about .ab-next__list a,
.page-about .ab-next__actions a {
  color: var(--cg-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
}

.page-about .ab-partner__note a:hover,
.page-about .ab-next__list a:hover,
.page-about .ab-next__actions a:hover {
  border-bottom-color: var(--cg-cyan);
}

/* ---------- 处理链路 ---------- */

.page-about .ab-flow__steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--cg-gold);
}

.page-about .ab-flow__step {
  border-bottom: 1px solid var(--ab-rule-soft);
}

.page-about .ab-flow__step .cg-disclosure__summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 4px;
  font-size: 17px;
  font-weight: 600;
  color: var(--cg-text-strong);
}

.page-about .ab-flow__step .cg-disclosure__summary::-webkit-details-marker {
  display: none;
}

.page-about .ab-flow__step[open],
.page-about .ab-flow__step details[open],
.page-about .ab-flow__step .cg-disclosure[open] {
  border-left: 2px solid var(--cg-gold);
  padding-left: 12px;
}

.page-about .ab-flow__num {
  color: var(--cg-cyan);
  font-size: 13px;
}

.page-about .ab-flow__name {
  flex: 1 1 auto;
}

.page-about .ab-flow__step .cg-disclosure__body {
  padding: 0 4px 20px;
}

.page-about .ab-flow__step .cg-disclosure__body p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--cg-text);
}

.page-about .ab-flow__out {
  font-size: 14px;
  color: var(--cg-text-strong);
  border-top: 1px dashed var(--ab-rule);
  padding-top: 10px;
}

.page-about .ab-flow__out .cg-label {
  color: var(--cg-gold);
  margin-right: 10px;
}

/* ---------- 下一步 ---------- */

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

.page-about .ab-next__list li {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--ab-rule-soft);
}

.page-about .ab-next__idx {
  color: var(--cg-gold);
  font-size: 13px;
  padding-top: 4px;
}

.page-about .ab-next__list p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cg-text);
}

.page-about .ab-next__actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.page-about .ab-next__actions p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--cg-text-dim);
}

/* ---------- 响应式 ---------- */

@media (min-width: 768px) {
  .page-about {
    --ab-pad: 72px;
  }

  .page-about .ab-hero {
    padding: 36px 0 56px;
  }

  .page-about .ab-why__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 32px;
    border-top: 1px solid var(--ab-rule);
  }

  .page-about .ab-why__item {
    border-bottom: 0;
    border-top: 1px solid transparent;
    padding: 26px 0 8px;
  }

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

  .page-about .ab-flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    border-top: 0;
  }

  .page-about .ab-flow__step {
    border-top: 2px solid rgba(212, 175, 55, 0.55);
    border-bottom: 0;
    border-right: 1px solid var(--ab-rule-soft);
            padding-right: 18px;
  }

  .page-about .ab-flow__step:last-child {
    border-right: 0;
  }

  .page-about .ab-flow__step .cg-disclosure__summary {
    align-items: flex-start;
    padding: 18px 0 14px;
  }

  .page-about .ab-flow__step[open],
  .page-about .ab-flow__step details[open],
  .page-about .ab-flow__step .cg-disclosure[open] {
    border-left: 0;
    padding-left: 0;
    border-top-color: var(--cg-cyan);
  }

  .page-about .ab-flow__step .cg-disclosure__body {
    padding: 0 0 22px;
  }
}

@media (min-width: 1024px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .ab-hero__figure {
    margin-top: 46px;
  }

  .page-about .ab-tl {
    margin-top: 34px;
  }

  .page-about .ab-tl__item {
    display: grid;
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 30px;
    padding-left: 36px;
    padding-bottom: 42px;
  }

  .page-about .ab-tl__stage {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    margin: 0;
    padding-top: 2px;
  }

  .page-about .ab-tl__name {
    font-size: 24px;
  }

  .page-about .ab-team__grid {
    align-items: start;
    gap: 48px;
    margin-top: 20px;
  }

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

  .page-about .ab-partner__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 44px;
    align-items: start;
  }
}
<<<END>>>