.page-about {
  --ab-gap: clamp(20px, 3vw, 36px);
  --ab-panel: linear-gradient(158deg, rgba(12, 20, 29, .97), rgba(4, 7, 11, .97));
  padding-bottom: clamp(64px, 9vw, 120px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(6px, 2vw, 18px);
}

.page-about .about-hero__head {
  max-width: 46rem;
}

.page-about .about-hero__title {
  margin: 16px 0 18px;
}

.page-about .about-hero__lede {
  color: var(--silver-300);
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.8;
}

.page-about .about-hero__metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(32px, 5vw, 56px);
  border: 1px solid var(--line);
  border-radius: var(--radius-sharp);
  background: var(--line);
  overflow: hidden;
}

.page-about .about-metric {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 22px;
  background: var(--ab-panel);
}

.page-about .about-metric::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: var(--cyan-line);
}

.page-about .about-metric--flame::before {
  background: var(--flame);
}

.page-about .about-metric__value {
  font-size: clamp(1.5rem, 3.6vw, 2.125rem);
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1;
  color: var(--silver-100);
}

.page-about .about-metric--flame .about-metric__value {
  color: var(--flame);
}

.page-about .about-metric__label {
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 我们做什么 ---------- */
.page-about .about-what__grid {
  display: grid;
  gap: var(--ab-gap);
  align-items: start;
}

.page-about .about-what__media {
  margin: 0;
}

.page-about .about-what__body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .about-what__text {
  color: var(--silver-300);
  line-height: 1.85;
  margin: 0;
}

.page-about .about-what__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

/* ---------- 四步准备 ---------- */
.page-about .about-path__head {
  max-width: 40rem;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-path__timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-sharp);
  background: var(--line);
  overflow: hidden;
}

.page-about .about-path__timeline .timeline__item {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 22px 20px 26px;
  background: var(--ab-panel);
}

.page-about .about-path__timeline .timeline__item::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 2px;
  background: var(--cyan);
}

.page-about .about-path__timeline .timeline__label {
  font-size: .75rem;
  letter-spacing: .18em;
  color: var(--silver-400);
}

.page-about .about-path__timeline .timeline__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--silver-100);
}

.page-about .about-path__timeline p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 限红结构 ---------- */
.page-about .about-tables__head {
  max-width: 44rem;
  margin-bottom: clamp(24px, 4vw, 36px);
}

.page-about .about-tables__lede {
  margin: 12px 0 0;
  color: var(--silver-300);
  line-height: 1.8;
}

.page-about .about-tables__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sharp);
  background: var(--line);
  overflow: hidden;
}

.page-about .about-tier {
  display: grid;
  gap: 10px;
  padding: 22px 20px 26px;
  background: var(--ab-panel);
  border-top: 2px solid transparent;
}

.page-about .about-tier--flame {
  border-top-color: var(--flame);
}

.page-about .about-tier__range {
  font-size: .8125rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-about .about-tier--flame .about-tier__range {
  color: var(--flame);
}

.page-about .about-tier__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--silver-100);
}

.page-about .about-tier p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-tables__media {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

/* ---------- 城市 ---------- */
.page-about .about-cities__head {
  max-width: 40rem;
  margin-bottom: clamp(24px, 4vw, 36px);
}

.page-about .about-cities__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
}

.page-about .about-city {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 28px 22px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sharp);
  background: linear-gradient(165deg, rgba(15, 49, 87, .48), rgba(4, 7, 11, .96));
  overflow: hidden;
}

.page-about .about-city::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: var(--silver-400);
}

.page-about .about-city--cyan::before {
  background: var(--cyan);
}

.page-about .about-city--flame::before {
  background: var(--flame);
}

.page-about .about-city__tag {
  margin: 0;
  font-size: .75rem;
  letter-spacing: .24em;
  color: var(--silver-300);
}

.page-about .about-city__title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--silver-100);
}

.page-about .about-city p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 配套支持 ---------- */
.page-about .about-service__grid {
  display: grid;
  gap: var(--ab-gap);
  align-items: center;
}

.page-about .about-service__body {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

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

.page-about .about-service__list li {
  display: grid;
  gap: 5px;
  padding-left: 14px;
  border-left: 2px solid var(--line-strong);
}

.page-about .about-service__key {
  font-size: .9375rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-about .about-service__list span {
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-service__media {
  margin: 0;
}

/* ---------- 行动区 ---------- */
.page-about .about-cta__panel {
  display: grid;
  gap: 24px;
  padding: clamp(26px, 4vw, 44px);
  border-radius: var(--radius-sharp);
}

.page-about .about-cta__copy {
  display: grid;
  gap: 12px;
}

.page-about .about-cta__copy p {
  margin: 0;
  color: var(--silver-300);
  line-height: 1.8;
}

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

/* ---------- 图片统一处理 ---------- */
.page-about .about-what__media img,
.page-about .about-service__media img,
.page-about .about-tables__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sharp);
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 1024px) {
  .page-about .about-what__grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-what__media {
    position: sticky;
    top: calc(var(--header-offset) + 24px);
  }

  .page-about .about-path__timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-service__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .8fr);
    gap: clamp(32px, 5vw, 64px);
  }

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