.page-about {
  --ab-gap: clamp(18px, 3vw, 36px);
  display: block;
}

.page-about .ab-section {
  margin-top: clamp(56px, 9vw, 104px);
}

.page-about .ab-section__sub {
  margin: 10px 0 0;
  max-width: 60ch;
  color: var(--wb-mist);
  font-size: 15px;
  line-height: 1.7;
}

/* ---------- 首屏框景 ---------- */
.page-about .ab-hero {
  margin-top: 18px;
}

.page-about .ab-hero__frame {
  padding: clamp(20px, 3.4vw, 42px);
  background:
    radial-gradient(120% 92% at 6% 0%, rgba(124, 92, 255, .16), transparent 56%),
    radial-gradient(105% 84% at 98% 100%, rgba(59, 232, 210, .13), transparent 62%),
    linear-gradient(180deg, rgba(18, 40, 64, .74), rgba(10, 22, 38, .76));
}

.page-about .ab-hero__head h1 {
  margin: 12px 0 0;
  max-width: 22ch;
  color: var(--wb-cream);
  font-size: clamp(28px, 5.2vw, 52px);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 800;
}

.page-about .ab-hero__body {
  display: grid;
  gap: var(--ab-gap);
  margin-top: clamp(20px, 3vw, 36px);
}

@media (min-width: 880px) {
  .page-about .ab-hero__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-about .ab-hero__lede p {
  margin: 0 0 14px;
  max-width: 62ch;
  color: var(--wb-body);
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.8;
}

.page-about .ab-hero__lede p:last-child {
  margin-bottom: 0;
}

.page-about .ab-facts {
  margin: 0;
  border-top: 1px solid var(--wb-line-soft);
}

.page-about .ab-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--wb-line-soft);
}

.page-about .ab-facts dt {
  color: var(--wb-rock);
  font-size: 13px;
  letter-spacing: .02em;
}

.page-about .ab-facts dd {
  margin: 0;
  color: var(--wb-body);
  font-size: 14.5px;
}

.page-about .ab-facts dd strong {
  color: var(--wb-neon);
  font-family: var(--wb-mono);
  font-size: 18px;
  font-weight: 700;
}

/* ---------- 三支队伍 ---------- */
.page-about .ab-teams__grid {
  display: grid;
  gap: var(--ab-gap);
  margin-top: clamp(22px, 3vw, 34px);
}

@media (min-width: 900px) {
  .page-about .ab-teams__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

.page-about .ab-teams__media .wb-note {
  margin: 16px 0 0;
  color: var(--wb-rock);
  font-size: 13.5px;
  line-height: 1.75;
  padding-left: 14px;
  border-left: 1px solid var(--wb-line);
}

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

.page-about .ab-team {
  padding: 18px 20px 20px;
  border: 1px solid var(--wb-line-soft);
  border-left: 3px solid var(--wb-neon);
  border-radius: var(--wb-r);
  background: linear-gradient(140deg, rgba(28, 58, 87, .44), rgba(10, 22, 38, .18));
  transition: transform .28s var(--wb-ease), border-color .28s var(--wb-ease), background .28s var(--wb-ease);
}

.page-about .ab-team:nth-child(2) {
  border-left-color: var(--wb-violet);
}

.page-about .ab-team:nth-child(3) {
  border-left-color: var(--wb-amber);
}

.page-about .ab-team:hover {
  transform: translateY(-4px);
  background: linear-gradient(140deg, rgba(28, 58, 87, .62), rgba(10, 22, 38, .28));
}

.page-about .ab-team__num {
  display: block;
  color: var(--wb-neon);
  font-family: var(--wb-mono);
  font-size: 12px;
  letter-spacing: .14em;
}

.page-about .ab-team:nth-child(2) .ab-team__num {
  color: var(--wb-violet);
}

.page-about .ab-team:nth-child(3) .ab-team__num {
  color: var(--wb-amber);
}

.page-about .ab-team h3 {
  margin: 8px 0 10px;
  color: var(--wb-cream);
  font-size: 17px;
  line-height: 1.45;
  letter-spacing: -.01em;
}

.page-about .ab-team p {
  margin: 0 0 10px;
  color: var(--wb-body);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-about .ab-team p:last-child {
  margin-bottom: 0;
}

/* ---------- 发展历程 ---------- */
.page-about .ab-history__media {
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-about .ab-timeline {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(24px, 3vw, 38px);
}

@media (min-width: 920px) {
  .page-about .ab-timeline {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: start;
  }
}

.page-about .ab-timeline__steps {
  display: flex;
  flex-direction: column;
  position: relative;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--wb-line);
}

.page-about .ab-step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 3px 14px;
  width: 100%;
  margin: 0 0 0 -1px;
  padding: 16px 18px 16px 20px;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: var(--wb-mist);
  background: transparent;
  border: 0;
  border-left: 2px solid transparent;
  transition: background .25s var(--wb-ease), border-color .25s var(--wb-ease), color .25s var(--wb-ease);
}

.page-about .ab-step:hover {
  background: rgba(28, 58, 87, .44);
  border-left-color: var(--wb-neon);
}

.page-about .ab-step[aria-pressed="true"] {
  background: rgba(59, 232, 210, .09);
  border-left-color: var(--wb-neon);
  color: var(--wb-cream);
}

.page-about .ab-step__num {
  grid-row: 1 / span 2;
  color: var(--wb-violet);
  font-family: var(--wb-mono);
  font-size: 12px;
  letter-spacing: .12em;
  padding-top: 3px;
}

.page-about .ab-step__label {
  color: inherit;
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-about .ab-step__meta {
  color: var(--wb-rock);
  font-size: 13px;
}

.page-about .ab-timeline__notes {
  display: grid;
  gap: 14px;
}

.page-about .ab-note {
  position: relative;
  padding: 18px 20px 20px;
  border: 1px solid var(--wb-line-soft);
  border-radius: var(--wb-r);
  background: linear-gradient(165deg, rgba(18, 40, 64, .78), rgba(10, 22, 38, .42));
}

.page-about .ab-note::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 34px;
  height: 2px;
  background: linear-gradient(90deg, var(--wb-violet), var(--wb-neon));
}

.page-about .ab-note h3 {
  margin: 0 0 8px;
  color: var(--wb-cream);
  font-size: 16px;
  line-height: 1.5;
}

.page-about .ab-note p {
  margin: 0;
  color: var(--wb-body);
  font-size: 14.5px;
  line-height: 1.78;
}

/* ---------- 更新节奏 ---------- */
.page-about .ab-cadence__grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 32px);
}

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

@media (min-width: 1060px) {
  .page-about .ab-cadence__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .ab-cadence__item {
  padding: 18px 18px 20px;
  border: 1px solid var(--wb-line-soft);
  border-top: 2px solid var(--wb-violet);
  border-radius: var(--wb-r);
  background: rgba(18, 40, 64, .34);
}

.page-about .ab-cadence__item:nth-child(2) {
  border-top-color: var(--wb-neon);
}

.page-about .ab-cadence__item:nth-child(3) {
  border-top-color: var(--wb-amber);
}

.page-about .ab-cadence__item:nth-child(4) {
  border-top-color: var(--wb-moss);
}

.page-about .ab-cadence__tag {
  display: inline-block;
  color: var(--wb-rock);
  font-family: var(--wb-mono);
  font-size: 12px;
  letter-spacing: .12em;
}

.page-about .ab-cadence__item h3 {
  margin: 10px 0 8px;
  color: var(--wb-cream);
  font-size: 15.5px;
  line-height: 1.5;
}

.page-about .ab-cadence__item p {
  margin: 0;
  color: var(--wb-body);
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- 资质与认可 ---------- */
.page-about .ab-honor__panel {
  display: grid;
  gap: var(--ab-gap);
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-r);
  background:
    linear-gradient(120deg, rgba(124, 92, 255, .12), transparent 58%),
    rgba(12, 26, 44, .62);
}

@media (min-width: 900px) {
  .page-about .ab-honor__panel {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-about .ab-honor__intro h2 {
  margin: 10px 0 14px;
  color: var(--wb-cream);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.28;
  letter-spacing: -.015em;
}

.page-about .ab-honor__intro p {
  margin: 0 0 12px;
  max-width: 58ch;
  color: var(--wb-body);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .ab-honor__intro p:last-child {
  margin-bottom: 0;
}

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

.page-about .ab-honor__list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 2px;
  border-bottom: 1px solid var(--wb-line-soft);
}

.page-about .ab-honor__list li:first-child {
  border-top: 1px solid var(--wb-line-soft);
}

.page-about .ab-honor__txt {
  color: var(--wb-body);
  font-size: 14.5px;
  line-height: 1.6;
}

/* ---------- 合作生态 ---------- */
.page-about .ab-eco__filter {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .ab-eco__list {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

@media (min-width: 760px) {
  .page-about .ab-eco__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1020px) {
  .page-about .ab-eco__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .ab-eco__card {
  display: flex;
  flex-direction: column;
  padding: 20px 20px 18px;
  border: 1px solid var(--wb-line-soft);
  border-radius: var(--wb-r);
  background: linear-gradient(155deg, rgba(28, 58, 87, .42), rgba(10, 22, 38, .2));
  transition: transform .28s var(--wb-ease), border-color .28s var(--wb-ease);
}

.page-about .ab-eco__card:hover {
  transform: translateY(-4px);
  border-color: var(--wb-line);
}

.page-about .ab-eco__card h3 {
  margin: 12px 0 10px;
  color: var(--wb-cream);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -.01em;
}

.page-about .ab-eco__card p {
  margin: 0 0 10px;
  color: var(--wb-body);
  font-size: 14px;
  line-height: 1.76;
}

.page-about .ab-eco__meta {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--wb-line-soft);
  color: var(--wb-rock);
  font-size: 12.5px;
  line-height: 1.6;
}

/* ---------- 服务覆盖 ---------- */
.page-about .ab-cover__grid {
  display: grid;
  gap: var(--ab-gap);
  margin-top: clamp(22px, 3vw, 34px);
}

@media (min-width: 900px) {
  .page-about .ab-cover__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
  }
}

.page-about .ab-cover__text > p {
  margin: 0 0 18px;
  color: var(--wb-body);
  font-size: 15px;
  line-height: 1.8;
}

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

.page-about .ab-cover__list li {
  padding: 14px 16px;
  border-left: 2px solid var(--wb-glass);
  background: rgba(18, 40, 64, .3);
}

.page-about .ab-cover__list li:nth-child(2) {
  border-left-color: var(--wb-violet);
}

.page-about .ab-cover__list li:nth-child(3) {
  border-left-color: var(--wb-amber);
}

.page-about .ab-cover__list h3 {
  margin: 0 0 6px;
  color: var(--wb-cream);
  font-size: 15px;
  line-height: 1.5;
}

.page-about .ab-cover__list p {
  margin: 0;
  color: var(--wb-mist);
  font-size: 14px;
  line-height: 1.72;
}

/* ---------- 收尾 ---------- */
.page-about .ab-outro {
  position: relative;
  overflow: hidden;
}

.page-about .ab-outro::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(107, 127, 146, .16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(107, 127, 146, .16) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 28%, #000 72%, transparent);
  mask-image: linear-gradient(180deg, transparent, #000 28%, #000 72%, transparent);
  pointer-events: none;
}

.page-about .ab-outro__inner {
  position: relative;
  display: grid;
  gap: var(--ab-gap);
  padding: clamp(24px, 3.6vw, 44px) 0 clamp(8px, 2vw, 18px);
}

@media (min-width: 880px) {
  .page-about .ab-outro__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }
}

.page-about .ab-outro__lead h2 {
  margin: 0 0 12px;
  color: var(--wb-cream);
  font-size: clamp(21px, 2.8vw, 28px);
  line-height: 1.3;
  letter-spacing: -.015em;
}

.page-about .ab-outro__lead p {
  margin: 0;
  max-width: 58ch;
  color: var(--wb-body);
  font-size: 15px;
  line-height: 1.8;
}

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

@media (max-width: 620px) {
  .page-about .ab-outro__links .wb-btn {
    flex: 1 1 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-team,
  .page-about .ab-eco__card,
  .page-about .ab-step {
    transition: none;
  }

  .page-about .ab-team:hover,
  .page-about .ab-eco__card:hover {
    transform: none;
  }
}