.page-about {
  --ab-num-font: var(--font-mono);
  --ab-card-cut: 16px;
  background: var(--mist);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-about .ab-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-about .ab-eyebrow--ink {
  color: var(--midnight);
}

.page-about .ab-card-kicker {
  display: block;
  font-family: var(--ab-num-font);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--orange);
  margin: 0 0 10px;
}

/* ---------- HERO ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  color: var(--mist);
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(59, 60, 143, .62), transparent 62%),
    radial-gradient(90% 70% at 4% 100%, rgba(255, 107, 26, .18), transparent 66%),
    var(--space-blue);
  padding-bottom: clamp(48px, 8vw, 88px);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(118deg, rgba(195, 208, 220, .08) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-about .ab-hero__crumbs {
  position: relative;
  z-index: 1;
  padding-top: clamp(20px, 4vw, 34px);
  margin-bottom: clamp(28px, 5vw, 56px);
  font-size: 13px;
}

.page-about .ab-hero__crumbs a,
.page-about .ab-hero__crumbs li {
  color: rgba(237, 243, 247, .72);
}

.page-about .ab-hero__crumbs a {
  text-decoration: none;
  border-bottom: 1px solid rgba(195, 208, 220, .35);
}

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

.page-about .ab-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.page-about .ab-hero__eyebrow {
  color: var(--mint);
  letter-spacing: .2em;
  font-size: 11px;
  margin: 0 0 16px;
}

.page-about .ab-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.2vw, 62px);
  line-height: 1.08;
  letter-spacing: -.01em;
  max-width: 15em;
}

.page-about .ab-hero__lede {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.75;
  color: rgba(237, 243, 247, .82);
  max-width: 34em;
}

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-hero__stats li {
  border-left: 2px solid rgba(52, 214, 165, .55);
  padding-left: 12px;
}

.page-about .ab-hero__num {
  display: block;
  font-family: var(--ab-num-font);
  font-weight: 700;
  font-size: clamp(26px, 4.4vw, 38px);
  line-height: 1;
  color: var(--mint);
  letter-spacing: -.02em;
}

.page-about .ab-hero__unit {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.5;
  color: rgba(237, 243, 247, .68);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 4vw, 38px);
}

.page-about .ab-hero__figure {
  position: relative;
  margin: 0;
  background: linear-gradient(160deg, var(--midnight), rgba(7, 24, 43, .9));
  border: 1px solid var(--line);
  padding: 8px;
}

.page-about .ab-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .ab-hero__figure figcaption {
  display: block;
  padding: 10px 4px 2px;
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(195, 208, 220, .78);
}

/* ---------- 通用区块 ---------- */
.page-about .ab-section {
  padding-block: clamp(48px, 7vw, 92px);
}

.page-about .ab-section--paper {
  background: var(--mist);
}

.page-about .ab-section--midnight {
  background: linear-gradient(180deg, var(--midnight), #0a2138 70%, var(--midnight));
  color: var(--mist);
}

.page-about .ab-section--deep {
  background:
    radial-gradient(110% 80% at 92% 0%, rgba(59, 60, 143, .5), transparent 60%),
    var(--space-blue);
  color: var(--mist);
}

.page-about .ab-section__head {
  max-width: 44em;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .ab-section__head h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.15;
}

.page-about .ab-section__head .eyebrow {
  color: var(--mint);
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .2em;
}

.page-about .ab-section__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(237, 243, 247, .78);
}

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

.page-about .ab-section__head--ink .ab-section__lede {
  color: rgba(7, 24, 43, .74);
}

/* ---------- 起点 ---------- */
.page-about .ab-origin {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-about .ab-origin__text h2 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.16;
  color: var(--ink);
}

.page-about .ab-origin__text .eyebrow {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .2em;
}

.page-about .ab-origin__text p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(7, 24, 43, .82);
}

.page-about .ab-quote {
  margin: 26px 0 0;
  padding: 18px 0 18px 20px;
  border-left: 3px solid var(--wine);
  border-top: 1px solid rgba(123, 30, 59, .22);
  border-bottom: 1px solid rgba(195, 208, 220, .8);
  background: linear-gradient(90deg, rgba(123, 30, 59, .06), transparent 72%);
}

.page-about .ab-quote p {
  margin: 0 0 8px;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.6;
  font-weight: 700;
  color: var(--wine);
}

.page-about .ab-quote cite {
  font-style: normal;
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(7, 24, 43, .6);
}

.page-about .panel {
  background: #fff;
  border: 1px solid rgba(13, 44, 77, .12);
  border-left: 4px solid var(--orange);
  padding: clamp(20px, 3vw, 30px);
  box-shadow: var(--shadow-soft);
}

.page-about .panel h3 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 22px);
  line-height: 1.35;
  color: var(--ink);
}

.page-about .ab-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .ab-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(7, 24, 43, .78);
}

.page-about .ab-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--midnight);
  transform: rotate(45deg);
}

.page-about .ab-list strong {
  color: var(--ink);
  margin-right: 4px;
}

/* ---------- 时间线 ---------- */
.page-about .ab-track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-inline: max(var(--gutter), calc((100vw - var(--shell)) / 2 + var(--gutter)));
  padding-block: 6px 22px;
  scrollbar-color: rgba(52, 214, 165, .5) rgba(195, 208, 220, .12);
  scrollbar-width: thin;
}

.page-about .ab-track::-webkit-scrollbar {
  height: 6px;
}

.page-about .ab-track::-webkit-scrollbar-thumb {
  background: rgba(52, 214, 165, .55);
}

.page-about .ab-node {
  position: relative;
  flex: 0 0 auto;
  width: min(80vw, 296px);
  scroll-snap-align: start;
  background: rgba(7, 24, 43, .62);
  border: 1px solid var(--line);
  padding: 24px 22px 22px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-card-cut)), calc(100% - var(--ab-card-cut)) 100%, 0 100%);
}

.page-about .ab-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 46px;
  height: 3px;
  background: var(--orange);
}

.page-about .ab-node__index {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mint);
  margin-bottom: 12px;
}

.page-about .ab-node h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.35;
  color: var(--mist);
}

.page-about .ab-node p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(237, 243, 247, .74);
}

.page-about .tag {
  display: inline-block;
  font-family: var(--ab-num-font);
  font-size: 11px;
  letter-spacing: .1em;
  padding: 4px 10px;
  border: 1px solid transparent;
}

.page-about .tag--orange {
  color: var(--orange);
  border-color: rgba(255, 107, 26, .5);
  background: rgba(255, 107, 26, .1);
}

.page-about .tag--amber {
  color: var(--amber);
  border-color: rgba(244, 183, 64, .5);
  background: rgba(244, 183, 64, .1);
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .ab-team__intro h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.16;
  color: var(--ink);
}

.page-about .ab-team__intro p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(7, 24, 43, .8);
}

.page-about .ab-team__intro .eyebrow {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .2em;
}

.page-about .ab-team__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-about .ab-team__jump .chip {
  display: inline-block;
  text-decoration: none;
  font-size: 13px;
  padding: 6px 14px;
  border: 1px solid rgba(13, 44, 77, .28);
  color: var(--midnight);
  background: transparent;
}

.page-about .ab-team__jump .chip:hover,
.page-about .ab-team__jump .chip:focus-visible {
  background: var(--midnight);
  color: var(--mist);
  border-color: var(--midnight);
}

.page-about .ab-media {
  margin: 0;
  border: 1px solid rgba(13, 44, 77, .14);
  background: var(--paper-dim);
  padding: 8px;
}

.page-about .ab-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .ab-media figcaption {
  padding: 10px 4px 2px;
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(13, 44, 77, .65);
}

.page-about .ab-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .ab-role {
  position: relative;
  background: #fff;
  border: 1px solid rgba(13, 44, 77, .12);
  border-top: 3px solid var(--midnight);
  padding: 22px 20px 20px;
  scroll-margin-top: calc(var(--header-h) + 20px);
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}

.page-about .ab-role:target {
  border-top-color: var(--orange);
  transform: translateY(-2px);
}

.page-about .ab-role__num {
  display: block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange-deep);
  margin-bottom: 10px;
}

.page-about .ab-role h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--ink);
}

.page-about .ab-role p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(7, 24, 43, .76);
}

/* ---------- 服务网络 ---------- */
.page-about .ab-network {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-about .ab-network__text h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.16;
  color: var(--mist);
}

.page-about .ab-network__text .eyebrow {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--mint);
}

.page-about .ab-network__text > p {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(237, 243, 247, .8);
}

.page-about .ab-cities {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .ab-cities li {
  font-family: var(--ab-num-font);
  font-size: 12px;
  letter-spacing: .06em;
  padding: 5px 10px;
  color: rgba(237, 243, 247, .88);
  border: 1px solid rgba(195, 208, 220, .28);
  background: rgba(13, 44, 77, .55);
}

.page-about .ab-network__note {
  display: grid;
  gap: 12px;
  border-left: 3px solid var(--mint);
  padding-left: 16px;
}

.page-about .ab-network__note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(237, 243, 247, .76);
}

.page-about .ab-network__note strong {
  color: var(--mint);
  margin-right: 6px;
}

.page-about .ab-network__figure {
  margin: 0;
  border: 1px solid var(--line-strong);
  background: rgba(13, 44, 77, .5);
  padding: 8px;
}

.page-about .ab-network__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .ab-network__figure figcaption {
  padding: 10px 4px 2px;
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(195, 208, 220, .8);
}

/* ---------- 质量 ---------- */
.page-about .ab-steps {
  list-style: none;
  margin: 0 0 clamp(24px, 4vw, 36px);
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: abstep;
}

.page-about .ab-step {
  position: relative;
  padding: 22px 20px 20px;
  background: linear-gradient(135deg, rgba(13, 44, 77, .06), transparent 70%);
  border-left: 3px solid var(--midnight);
}

.page-about .ab-step__num {
  display: block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mint);
  background: var(--midnight);
  width: fit-content;
  padding: 3px 8px;
  margin-bottom: 12px;
}

.page-about .ab-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--ink);
}

.page-about .ab-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(7, 24, 43, .78);
}

.page-about .ab-quality__panel {
  border-left-color: var(--wine);
  background: linear-gradient(120deg, #fff, rgba(123, 30, 59, .05));
}

.page-about .ab-quality__panel h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 23px);
  color: var(--wine);
}

.page-about .ab-quality__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(7, 24, 43, .8);
}

.page-about .ab-quality__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 生态 ---------- */
.page-about .ab-section--eco {
  background:
    linear-gradient(120deg, var(--wine), #4d1327 55%, var(--space-blue));
  color: var(--mist);
}

.page-about .ab-eco {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-about .ab-eco__text h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.16;
  color: #fff;
}

.page-about .ab-eco__text .eyebrow {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--silver);
}

.page-about .ab-eco__text > p {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .82);
}

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

.page-about .ab-eco__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .84);
  border-bottom: 1px solid rgba(195, 208, 220, .2);
  padding-bottom: 12px;
}

.page-about .ab-eco__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--silver);
  transform: rotate(45deg);
}

.page-about .ab-eco__list strong {
  font-family: var(--ab-num-font);
  color: #fff;
  margin-right: 6px;
}

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

.page-about .ab-seal {
  display: flex;
  align-items: center;
  gap: 16px;
  border: 1px solid rgba(195, 208, 220, .4);
  padding: 18px;
  background: rgba(7, 24, 43, .32);
}

.page-about .ab-seal__ring {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  border: 2px solid var(--silver);
  border-radius: 50%;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--silver);
}

.page-about .ab-seal p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .86);
}

.page-about .ab-eco__card {
  background: rgba(7, 24, 43, .55);
  border: 1px solid rgba(195, 208, 220, .26);
  border-top: 3px solid var(--orange);
  padding: 22px 20px;
}

.page-about .ab-eco__card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  color: #fff;
}

.page-about .ab-eco__card p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .78);
}

/* ---------- 收尾 ---------- */
.page-about .ab-section--closing {
  background: var(--mist);
  border-top: 1px solid rgba(13, 44, 77, .12);
}

.page-about .ab-closing {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-about .ab-closing h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.2;
  color: var(--ink);
}

.page-about .ab-closing .eyebrow {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--orange-deep);
}

.page-about .ab-closing p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(7, 24, 43, .78);
  max-width: 40em;
}

.page-about .ab-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

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

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

  .page-about .ab-closing {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    justify-content: space-between;
  }

  .page-about .ab-closing__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: end;
  }

  .page-about .ab-hero__figure {
    margin-top: clamp(10px, 3vw, 40px);
    clip-path: polygon(0 0, 100% 0, 100% 86%, 14% 100%, 0 100%);
  }

  .page-about .ab-origin {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-about .ab-origin__side {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-about .ab-team {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-about .ab-team__intro {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

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

  .page-about .ab-role:nth-child(even) {
    transform: translateY(24px);
  }

  .page-about .ab-network {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    align-items: center;
  }

  .page-about .ab-network__figure {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%, 0 16%);
  }

  .page-about .ab-track {
    gap: 20px;
  }

  .page-about .ab-eco {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    align-items: center;
  }
}

@media (min-width: 1180px) {
  .page-about .ab-hero h1 {
    font-size: clamp(46px, 4.6vw, 64px);
  }

  .page-about .ab-section__head {
    max-width: 48em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-role {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>
</main>