.page-about {
  --ab-gutter: clamp(16px, 3.4vw, 32px);
  background: var(--void);
  color: var(--text-primary);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-about .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--nebula-purple);
}

.page-about .index-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(32px, 5.5vw, 64px) 0 clamp(44px, 6.5vw, 84px);
  border-bottom: var(--line);
  background: linear-gradient(158deg, #070b16 0%, #0b1220 48%, #05070f 100%);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(34, 48, 74, 0.55) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(0deg, rgba(34, 48, 74, 0.4) 0 1px, transparent 1px 24px);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 76%);
  pointer-events: none;
}

.page-about .ab-hero__wash {
  position: absolute;
  top: -20%;
  right: -14%;
  width: min(860px, 92%);
  height: min(700px, 130%);
  background:
    radial-gradient(58% 54% at 72% 22%, rgba(122, 92, 255, 0.42), transparent 72%),
    radial-gradient(54% 48% at 18% 84%, rgba(47, 227, 208, 0.20), transparent 74%);
  transform: skewY(-9deg);
  pointer-events: none;
}

.page-about .ab-hero__rings {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-about .ab-hero__rings span {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(122, 92, 255, 0.3);
}

.page-about .ab-hero__rings span:nth-child(1) {
  right: -150px;
  top: -190px;
  width: 540px;
  height: 540px;
}

.page-about .ab-hero__rings span:nth-child(2) {
  right: -40px;
  top: -60px;
  width: 330px;
  height: 330px;
  border-color: rgba(47, 227, 208, 0.22);
}

.page-about .ab-hero__rings i {
  position: absolute;
  right: 176px;
  top: 104px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber-gold);
  box-shadow: 0 0 16px rgba(255, 182, 61, 0.75);
}

.page-about .ab-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.page-about .breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-about .breadcrumbs a:hover {
  color: var(--electric-cyan);
}

.page-about .ab-hero .eyebrow {
  margin-top: 22px;
}

.page-about .ab-hero h1 {
  margin: 14px 0 22px;
  max-width: 16em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.6vw, 64px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.page-about .ab-hero__lead {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-about .ab-hero__meta {
  list-style: none;
  margin: 32px 0 0;
  padding: 20px 0 0;
  border-top: var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 14px 42px;
}

.page-about .ab-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .ab-hero__meta .mono {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber-gold);
}

.page-about .ab-hero__meta em {
  font-style: normal;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* ---------- 通用区块 ---------- */
.page-about .ab-section {
  position: relative;
  padding: clamp(48px, 7vw, 88px) 0;
  border-bottom: var(--line);
}

.page-about .ab-section--ink {
  background: var(--space-ink);
}

.page-about .ab-head {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-about .ab-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.22;
  letter-spacing: 0.015em;
  color: var(--text-primary);
}

.page-about .ab-head__note {
  margin: 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.page-about .ab-head--split {
  display: grid;
  gap: 16px;
}

.page-about .panel {
  border: var(--line);
  background: var(--panel-slate);
}

.page-about .media-frame {
  position: relative;
  overflow: hidden;
  border: var(--line);
  background:
    radial-gradient(70% 60% at 70% 18%, rgba(122, 92, 255, 0.22), transparent 72%),
    radial-gradient(60% 60% at 20% 88%, rgba(47, 227, 208, 0.14), transparent 74%),
    var(--space-ink);
}

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

/* ---------- 品牌起点 ---------- */
.page-about .ab-origin__grid {
  display: grid;
  gap: 32px;
}

.page-about .ab-origin__body p {
  margin: 0 0 1.1em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.page-about .ab-origin__body p:last-child {
  margin-bottom: 0;
  color: var(--text-primary);
}

.page-about .ab-origin__panel {
  position: relative;
  padding: 24px;
}

.page-about .ab-origin__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--electric-cyan), transparent);
}

.page-about .ab-principles {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .ab-principles li {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 1px solid var(--grid-line);
}

.page-about .ab-principles strong {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.page-about .ab-principles span {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---------- 内容与服务 ---------- */
.page-about .ab-offer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-about .ab-offer__item {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 24px 0 24px 20px;
  border-top: 1px solid var(--grid-line);
}

.page-about .ab-offer__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: var(--nebula-purple);
  opacity: 0.55;
}

.page-about .ab-offer__item:nth-child(2)::before {
  background: var(--electric-cyan);
}

.page-about .ab-offer__item:nth-child(3)::before {
  background: var(--amber-gold);
}

.page-about .ab-offer__item:nth-child(4)::before {
  background: var(--pitch-teal);
}

.page-about .ab-offer__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.page-about .ab-offer__item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.2vw, 22px);
  letter-spacing: 0.01em;
  color: var(--text-primary);
}

.page-about .ab-offer__item p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-about .ab-caps {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .ab-caps li {
  padding: 18px 20px;
  border: var(--line);
  background: linear-gradient(180deg, rgba(19, 28, 46, 0.92), rgba(11, 18, 32, 0.62));
}

.page-about .ab-caps strong {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--electric-cyan);
}

.page-about .ab-caps span {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ---------- 覆盖刻度 ---------- */
.page-about .ab-scale__layout {
  display: grid;
  gap: 32px;
}

.page-about .scale-wall {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .scale-row {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  grid-template-areas:
    "num unit"
    "num desc";
  column-gap: 18px;
  row-gap: 6px;
  padding: 20px 0;
  border-top: 1px solid var(--grid-line);
}

.page-about .scale-row:last-child {
  border-bottom: 1px solid var(--grid-line);
}

.page-about .scale-row__num {
  grid-area: num;
  font-size: clamp(34px, 6.5vw, 54px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--amber-gold);
}

.page-about .scale-row__unit {
  grid-area: unit;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.page-about .scale-row__desc {
  grid-area: desc;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-secondary);
}

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

.page-about .ab-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

/* ---------- 团队分工 ---------- */
.page-about .ab-team__media {
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-about .ab-team__cards {
  display: grid;
  gap: 18px;
}

.page-about .ab-role {
  position: relative;
  padding: 24px 22px;
  border: var(--line);
  background: var(--panel-slate);
}

.page-about .ab-role::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--nebula-purple);
}

.page-about .ab-role--data::before {
  background: var(--amber-gold);
}

.page-about .ab-role--build::before {
  background: var(--electric-cyan);
}

.page-about .ab-role__num {
  display: block;
  margin: 14px 0 10px;
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber-gold);
}

.page-about .ab-role h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.page-about .ab-role p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-about .ab-beat {
  margin-top: 28px;
  display: grid;
  border: var(--line);
}

.page-about .ab-beat__cell {
  padding: 18px 20px;
  border-top: var(--line);
}

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

.page-about .ab-beat__time {
  margin: 0 0 6px;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--electric-cyan);
}

.page-about .ab-beat__cell p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ---------- 发展历程 ---------- */
.page-about .ab-timeline__media {
  margin-bottom: 20px;
}

.page-about .ab-trail {
  display: block;
  width: 100%;
  height: 76px;
  color: rgba(122, 92, 255, 0.45);
}

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

.page-about .tl-band {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 26px 0;
  border-top: 1px solid var(--grid-line);
}

.page-about .tl-band:last-child {
  border-bottom: 1px solid var(--grid-line);
}

.page-about .tl-band__year {
  position: relative;
  display: inline-block;
  padding-left: 20px;
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--nebula-purple);
  transition: color var(--dur) var(--ease);
}

.page-about .tl-band__year::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -4px;
  border-radius: 50%;
  background: var(--amber-gold);
  transition: box-shadow var(--dur) var(--ease);
}

.page-about .tl-band h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  color: var(--text-primary);
}

.page-about .tl-band__body > p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-about .tl-more {
  margin-top: 8px !important;
  font-size: 13.5px !important;
  line-height: 1.75 !important;
  color: var(--text-muted) !important;
  padding-left: 12px;
  border-left: 1px solid var(--grid-line);
  transition: color var(--dur) var(--ease);
}

.page-about .tl-band:hover .tl-band__year,
.page-about .tl-band:focus-within .tl-band__year {
  color: var(--electric-cyan);
}

.page-about .tl-band:hover .tl-band__year::before,
.page-about .tl-band:focus-within .tl-band__year::before {
  box-shadow: 0 0 14px rgba(255, 182, 61, 0.75);
}

.page-about .tl-band:hover .tl-more,
.page-about .tl-band:focus-within .tl-more {
  color: var(--text-secondary) !important;
}

/* ---------- 合作与认可 ---------- */
.page-about .ab-eco__grid {
  display: grid;
  gap: 18px;
}

.page-about .ab-eco__card {
  padding: 24px;
  border-left: 2px solid var(--nebula-purple);
}

.page-about .ab-eco__card:last-child {
  border-left-color: var(--amber-gold);
}

.page-about .ab-eco__card h3 {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  color: var(--text-primary);
}

.page-about .ab-eco__card > p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-about .ab-eco__stat {
  margin-top: 16px !important;
  padding-top: 14px;
  border-top: 1px solid var(--grid-line);
  font-family: var(--font-mono);
  font-size: 13px !important;
  letter-spacing: 0.04em;
  color: var(--text-muted) !important;
}

.page-about .ab-eco__stat .mono {
  font-size: 22px;
  font-weight: 700;
  color: var(--amber-gold);
  margin-right: 6px;
}

/* ---------- 收束 ---------- */
.page-about .ab-cta {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(122, 92, 255, 0.20), rgba(47, 227, 208, 0.09) 58%, transparent 88%),
    var(--void);
}

.page-about .ab-cta h2 {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.2;
  letter-spacing: 0.015em;
  color: var(--text-primary);
}

.page-about .ab-cta__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-secondary);
}

.page-about .ab-links {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .ab-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid var(--electric-cyan);
  border-radius: var(--r-capsule);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--electric-cyan);
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .ab-links a:hover {
  background: var(--electric-cyan);
  color: var(--void);
}

.page-about .ab-links a.is-primary {
  background: var(--electric-cyan);
  color: var(--void);
}

.page-about .ab-links a.is-primary:hover {
  background: var(--text-primary);
  border-color: var(--text-primary);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .ab-caps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

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

  .page-about .ab-beat__cell {
    border-top: 0;
    border-left: var(--line);
  }

  .page-about .ab-beat__cell:first-child {
    border-left: 0;
  }

  .page-about .ab-eco__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 820px) {
  .page-about .ab-head--split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
    align-items: end;
    gap: 40px;
  }

  .page-about .ab-offer__item {
    grid-template-columns: 128px minmax(0, 1fr);
    column-gap: 32px;
    padding: 28px 0 28px 24px;
  }

  .page-about .ab-offer__kicker {
    grid-row: 1 / span 2;
    padding-top: 6px;
  }

  .page-about .ab-offer__item::before {
    top: 28px;
    bottom: 28px;
  }

  .page-about .tl-band {
    grid-template-columns: 190px minmax(0, 1fr);
    column-gap: 44px;
    align-items: start;
    padding: 28px 0;
  }

  .page-about .tl-band__year {
    padding-left: 24px;
    position: sticky;
    top: calc(var(--hdr-h) + 12px);
  }

  .page-about .ab-team__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .ab-scale__layout {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .ab-figure {
    position: sticky;
    top: calc(var(--hdr-h) + 24px);
  }

  .page-about .scale-row {
    grid-template-columns: 116px minmax(0, 1fr);
    column-gap: 24px;
    padding: 24px 0;
  }
}

@media (min-width: 1180px) {
  .page-about .ab-hero h1 {
    max-width: 14em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-band__year,
  .page-about .tl-more,
  .page-about .ab-links a,
  .page-about .breadcrumbs a {
    transition: none;
  }

  .page-about .tl-band__year {
    position: static;
  }
}
<<<END>>>