.page-about {
  --ab-gap: clamp(18px, 3vw, 32px);
  --ab-pad: clamp(20px, 3.2vw, 34px);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: clip;
  padding-bottom: clamp(40px, 6vw, 88px);
  background:
    radial-gradient(1100px 520px at 84% -6%, rgba(34, 211, 238, 0.16), transparent 62%),
    radial-gradient(760px 440px at 6% 10%, rgba(255, 176, 32, 0.09), transparent 68%),
    var(--ink);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-head);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0;
}

.page-about p {
  margin: 0;
}

.page-about a {
  color: inherit;
  text-decoration: none;
}

.page-about .prose {
  color: var(--mist);
  max-width: 68ch;
}

.page-about .prose + .prose {
  margin-top: 14px;
}

/* 面包屑 */
.page-about .ab-crumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-about .breadcrumbs__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-about .breadcrumbs__list a {
  color: var(--cyan);
}

.page-about .breadcrumbs__list a:hover {
  color: var(--cyan-soft);
}

/* 首屏 */
.page-about .ab-hero {
  position: relative;
  padding: clamp(24px, 4vw, 46px) 0 clamp(28px, 5vw, 52px);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  inset: auto -10% 0 -10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line) 30%, var(--cyan) 55%, transparent 90%);
  opacity: 0.55;
}

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

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

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

.page-about .eyebrow {
  color: var(--cyan);
  margin-bottom: 14px;
}

.page-about h1 {
  font-size: clamp(32px, 7.6vw, 60px);
  font-weight: 800;
  max-width: 16ch;
  background: linear-gradient(100deg, var(--white) 24%, var(--cyan-soft) 78%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .ab-hero__lead {
  margin-top: clamp(16px, 2.4vw, 24px);
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--mist);
}

.page-about .ab-hero__chips {
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-about .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.page-about .chip {
  display: inline-flex;
  align-items: center;
  padding: 0.35em 0.9em;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(22, 42, 82, 0.55);
  color: var(--white);
  font-size: 13px;
  line-height: 1.5;
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  border-radius: 999px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  transition: transform 160ms var(--ease), background-color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .btn--primary {
  background: var(--amber);
  color: #2a1700;
}

.page-about .btn--primary:hover {
  background: var(--amber-deep);
  transform: translateY(-2px);
}

.page-about .btn--ghost {
  border: 1px solid var(--line);
  color: var(--white);
  background: rgba(22, 42, 82, 0.4);
}

.page-about .btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .ab-hero__media {
  min-width: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 26px 70px rgba(3, 9, 24, 0.6);
}

.page-about .media-frame {
  margin: 0;
  background: var(--glass);
}

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

.page-about .media-frame__caption {
  padding: 12px 18px 16px;
  font-size: 13px;
  color: var(--mist);
}

/* 章节锚点 */
.page-about .ab-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(22px, 3.4vw, 34px);
  padding: 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(14, 29, 61, 0.7);
}

.page-about .ab-jump a {
  flex: 1 1 auto;
  text-align: center;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--mist);
  transition: background-color 150ms var(--ease), color 150ms var(--ease);
}

.page-about .ab-jump a:hover,
.page-about .ab-jump a:focus-visible {
  background: rgba(34, 211, 238, 0.14);
  color: var(--cyan);
}

/* 通用章节 */
.page-about .ab-section {
  padding: clamp(40px, 6vw, 82px) 0;
}

.page-about .ab-section--band {
  background: linear-gradient(180deg, rgba(14, 29, 61, 0) 0%, rgba(14, 29, 61, 0.85) 12%, rgba(14, 29, 61, 0.85) 88%, rgba(14, 29, 61, 0) 100%);
  border-top: 1px solid rgba(43, 66, 112, 0.5);
  border-bottom: 1px solid rgba(43, 66, 112, 0.5);
}

.page-about .ab-head {
  max-width: 76ch;
  margin-bottom: clamp(24px, 3.6vw, 42px);
}

.page-about .section__title {
  font-size: clamp(24px, 4.4vw, 38px);
  font-weight: 800;
  color: var(--white);
}

.page-about .section__sub {
  margin-top: 14px;
  color: var(--mist);
  font-size: clamp(14px, 1.5vw, 16px);
}

/* 卡片组 */
.page-about .ab-cards {
  display: grid;
  gap: var(--ab-gap);
  grid-template-columns: 1fr;
}

.page-about .ab-card {
  padding: var(--ab-pad);
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(22, 42, 82, 0.92), rgba(10, 22, 48, 0.92));
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .ab-card:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 211, 238, 0.6);
}

.page-about .bento-card__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  text-transform: uppercase;
  margin: 0 0 10px;
}

.page-about .bento-card__title {
  font-size: clamp(18px, 2.2vw, 21px);
  font-weight: 700;
  margin-bottom: 10px;
}

.page-about .ab-card p:last-child {
  color: var(--mist);
  font-size: 15px;
}

.page-about .ab-card--lead {
  background: linear-gradient(150deg, rgba(34, 211, 238, 0.16), rgba(22, 42, 82, 0.9) 55%);
  border-color: rgba(34, 211, 238, 0.42);
}

/* 双栏图文 */
.page-about .ab-split {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

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

.page-about .ab-split__text .section__title {
  margin-bottom: 16px;
}

.page-about .ab-figures {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-about .data-figure {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid rgba(43, 66, 112, 0.9);
  background: rgba(7, 18, 43, 0.72);
  border-left: 3px solid var(--cyan);
}

.page-about .data-figure__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 42px);
  font-weight: 700;
  color: var(--cyan-soft);
  line-height: 1.1;
}

.page-about .data-figure__cap {
  font-size: 13px;
  color: var(--mist);
  line-height: 1.6;
}

/* 团队 */
.page-about .ab-team {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .ab-team__media .media-frame {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-about .ab-team__body .section__title {
  margin-bottom: 14px;
}

.page-about .ab-acc {
  margin-top: clamp(20px, 3vw, 28px);
  display: grid;
  gap: 10px;
}

.page-about .ab-acc__item {
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: rgba(14, 29, 61, 0.66);
  padding: 4px 18px;
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-about .ab-acc__item[open] {
  border-color: rgba(34, 211, 238, 0.55);
  background: rgba(22, 42, 82, 0.8);
}

.page-about .ab-acc__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
}

.page-about .ab-acc__sum::-webkit-details-marker {
  display: none;
}

.page-about .ab-acc__sum:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

.page-about .ab-acc__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--cyan);
  border-radius: 999px;
  padding: 0.2em 0.7em;
}

.page-about .ab-acc__name {
  color: var(--white);
}

.page-about .ab-acc__body {
  padding: 0 0 16px;
  color: var(--mist);
  font-size: 14.5px;
  max-width: 62ch;
}

/* 发展路径 */
.page-about .ab-path {
  display: grid;
  gap: clamp(22px, 3.6vw, 40px);
}

.page-about .ab-path__media {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-about .ab-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 24px;
  position: relative;
  display: grid;
  gap: 12px;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(43, 66, 112, 0.4));
}

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

.page-about .ab-timeline__item::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
}

.page-about .ab-timeline__item--now::before {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 0 5px rgba(255, 176, 32, 0.18);
}

.page-about .ab-node {
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  background: rgba(22, 42, 82, 0.55);
  padding: 2px 18px;
}

.page-about .ab-node[open] {
  border-color: rgba(34, 211, 238, 0.5);
  background: rgba(22, 42, 82, 0.92);
}

.page-about .ab-node__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
}

.page-about .ab-node__sum::-webkit-details-marker {
  display: none;
}

.page-about .ab-node__sum:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

.page-about .ab-node__ver {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.45);
  border-radius: 999px;
  padding: 0.15em 0.7em;
}

.page-about .ab-timeline__item--now .ab-node__ver {
  color: var(--amber);
  border-color: rgba(255, 176, 32, 0.55);
}

.page-about .ab-node__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  color: var(--white);
}

.page-about .ab-node__body {
  padding: 0 0 16px;
  color: var(--mist);
  font-size: 14.5px;
  max-width: 64ch;
}

/* 合作生态 */
.page-about .ab-eco {
  display: grid;
  gap: clamp(22px, 3.4vw, 34px);
}

.page-about .ab-eco__chips {
  gap: 10px;
}

.page-about .ab-eco__chip {
  cursor: default;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-about .ab-eco__chip:hover {
  border-color: var(--cyan);
  color: var(--cyan-soft);
  background: rgba(34, 211, 238, 0.12);
}

.page-about .ab-eco__stats {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-about .ab-mini {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: rgba(22, 42, 82, 0.7);
}

.page-about .ab-mini__num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--amber);
  line-height: 1;
}

.page-about .ab-mini__cap {
  font-size: 13px;
  color: var(--mist);
}

/* 品牌站服务 */
.page-about .ab-service {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-about .ab-service__intro .section__title {
  margin-bottom: 16px;
}

.page-about .ab-service__links {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 14px;
}

.page-about .ab-service__links a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(34, 211, 238, 0.42);
  padding-bottom: 2px;
}

.page-about .ab-service__links a:hover {
  color: var(--cyan-soft);
  border-color: var(--cyan-soft);
}

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

.page-about .ab-step {
  position: relative;
  padding: 20px 22px 22px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(22, 42, 82, 0.9), rgba(9, 20, 44, 0.9));
}

.page-about .ab-step::after {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  border-radius: 2px;
  opacity: 0.7;
}

.page-about .ab-step__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .ab-step__title {
  font-size: 19px;
  font-weight: 700;
  margin: 6px 0 8px;
}

.page-about .ab-step__text {
  color: var(--mist);
  font-size: 14.5px;
}

/* 收束 */
.page-about .ab-cta {
  padding: clamp(30px, 5vw, 64px) 0 clamp(10px, 2vw, 24px);
}

.page-about .ab-cta__inner {
  display: grid;
  gap: 20px;
  padding: clamp(26px, 4vw, 46px);
  border-radius: var(--r-lg);
  border: 1px solid rgba(34, 211, 238, 0.34);
  background:
    radial-gradient(620px 260px at 92% 0%, rgba(255, 176, 32, 0.16), transparent 68%),
    linear-gradient(140deg, rgba(34, 211, 238, 0.14), rgba(14, 29, 61, 0.94) 58%);
}

.page-about .ab-cta__title {
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 800;
  color: var(--white);
}

.page-about .ab-cta__sub {
  margin-top: 12px;
  color: var(--mist);
  font-size: 15px;
  max-width: 60ch;
}

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

.page-about .ab-cta__top {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .ab-cta__top a {
  color: var(--mist);
  border-bottom: 1px dashed rgba(169, 185, 217, 0.5);
  padding-bottom: 2px;
}

.page-about .ab-cta__top a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* 小屏栅格保护 */
.page-about .ab-hero__grid,
.page-about .ab-split,
.page-about .ab-team,
.page-about .ab-path,
.page-about .ab-service {
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 700px) {
  .page-about .ab-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .ab-card--lead {
    grid-column: span 2;
  }

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

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

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

  .page-about .ab-step__text {
    font-size: 14px;
  }

  .page-about .ab-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
  }

  .page-about .ab-cta__top {
    grid-column: 1 / -1;
    margin-top: 4px;
  }
}

@media (min-width: 960px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
  }

  .page-about .ab-hero__media {
    transform: translateY(-6px);
  }

  .page-about .ab-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

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

  .page-about .ab-team {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-about .ab-team__media {
    position: sticky;
    top: 110px;
  }

  .page-about .ab-path {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-about .ab-timeline {
    padding-left: 28px;
  }

  .page-about .ab-service {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .page-about .ab-service__intro {
    position: sticky;
    top: 110px;
  }

  .page-about .ab-jump {
    justify-content: flex-start;
    gap: 4px;
  }

  .page-about .ab-jump a {
    flex: 0 0 auto;
    padding: 8px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-card:hover,
  .page-about .btn:hover,
  .page-about .ab-hero__media {
    transform: none;
  }
}
<<<END>>>