.page-about .breadcrumb {
  padding-top: 28px;
}

.page-about .about-hero {
  display: grid;
  gap: 32px;
  padding: 28px 0 8px;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7.2vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--warm);
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  border-radius: var(--r-md);
  background: var(--line-soft);
  overflow: hidden;
}

.page-about .hero-stat {
  padding: 16px 16px 18px;
  background: var(--night);
}

.page-about .hero-stat__label {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .hero-stat__value {
  margin: 8px 0 0;
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan-soft);
  font-variant-numeric: tabular-nums;
}

.page-about .hero-stat__unit {
  margin-left: 2px;
  font-size: 0.58em;
  color: var(--mist);
}

/* ---------- 痛点 ---------- */

.page-about .problem-list {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  display: grid;
  gap: 30px;
}

.page-about .problem {
  position: relative;
  padding-left: 26px;
  border-left: 2px solid transparent;
  border-image: linear-gradient(180deg, var(--cyan), var(--violet)) 1;
}

.page-about .problem__index {
  display: block;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .problem__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.35;
  color: var(--warm);
}

.page-about .problem__text {
  margin: 10px 0 0;
  max-width: 58ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 时间轴 ---------- */

.page-about .timeline {
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 15px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--violet) 54%, var(--pulse) 100%);
  opacity: 0.72;
}

.page-about .tl-item {
  position: relative;
  padding-left: 46px;
  margin-bottom: 38px;
}

.page-about .tl-item:last-child {
  margin-bottom: 0;
}

.page-about .tl-dot {
  position: absolute;
  left: 8px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(47, 227, 214, 0.12);
}

.page-about .tl-dot--pulse {
  border-color: var(--pulse);
  box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.16);
  animation: about-pulse 2.4s var(--ease) infinite;
}

@keyframes about-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.page-about .tl-year {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  background: var(--panel);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .tl-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.35;
  color: var(--warm);
}

.page-about .tl-text {
  margin: 10px 0 0;
  max-width: 52ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .tl-media {
  margin-top: 18px;
}

/* ---------- 内容工序 ---------- */

.page-about .flow-grid {
  display: grid;
  gap: 36px;
  align-items: start;
}

.page-about .flow-media {
  margin-top: 26px;
}

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

.page-about .flow-step {
  position: relative;
  padding: 20px 20px 22px 62px;
  border-radius: var(--r-md);
  background: var(--night);
  border: 1px solid transparent;
  transition: background 220ms var(--ease), border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-about .flow-step:hover,
.page-about .flow-step:focus-visible {
  background: var(--panel);
  border-color: var(--line);
  transform: translateX(2px);
  outline: none;
}

.page-about .flow-step:focus-visible {
  box-shadow: 0 0 0 2px rgba(47, 227, 214, 0.42);
}

.page-about .flow-step__num {
  position: absolute;
  left: 20px;
  top: 21px;
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .flow-step__title {
  margin: 0;
  font-family: var(--font-label);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm);
}

.page-about .flow-step__text {
  margin: 10px 0 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 案例合集 ---------- */

.page-about .case-themes {
  margin: 30px 0 0;
}

.page-about .case-scenarios {
  display: grid;
  gap: 22px;
  margin-top: 30px;
}

.page-about .case-scenario {
  padding: 22px 22px 24px;
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, rgba(22, 33, 43, 0.94) 0%, rgba(14, 21, 28, 0.94) 100%);
  border-left: 3px solid var(--violet);
}

.page-about .case-scenario__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--cyan-soft);
}

.page-about .case-scenario__text {
  margin: 10px 0 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .cases-section .btn {
  margin-top: 30px;
}

/* ---------- 团队 ---------- */

.page-about .team-grid {
  display: grid;
  gap: 12px;
  margin-top: 32px;
}

.page-about .team-network {
  margin-top: 36px;
  padding: 24px 20px;
  border-radius: var(--r-lg);
  background: var(--night);
}

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

.page-about .network-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .network-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .network-item__value {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .network-item__label {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 服务地区 ---------- */

.page-about .region-card {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
}

.page-about .region-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 60%;
  filter: saturate(0.85) brightness(0.62);
}

.page-about .region-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(125deg, rgba(7, 11, 15, 0.95) 0%, rgba(14, 21, 28, 0.86) 48%, rgba(255, 90, 31, 0.18) 100%);
}

.page-about .region-card__body {
  position: relative;
  z-index: 1;
  padding: 34px 24px 36px;
  max-width: 66ch;
}

.page-about .region-card__text {
  margin: 16px 0 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .region-card__body .btn {
  margin-top: 26px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .breadcrumb { padding-top: 36px; }

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

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

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

  .page-about .network-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 34px;
  }

  .page-about .network-item:nth-last-child(-n + 2) {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-about .region-card__body {
    padding: 48px 48px 52px;
  }
}

@media (min-width: 900px) {
  .page-about .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .tl-item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    padding-left: 0;
    margin-bottom: 60px;
  }

  .page-about .tl-item:last-child {
    margin-bottom: 0;
  }

  .page-about .tl-dot {
    left: 50%;
    top: 10px;
    transform: translateX(-50%);
  }

  .page-about .tl-item--left .tl-body {
    grid-column: 1;
    padding-right: 56px;
    text-align: right;
  }

  .page-about .tl-item--left .tl-text {
    margin-left: auto;
  }

  .page-about .tl-item--right .tl-body {
    grid-column: 2;
    padding-left: 56px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 52px;
    padding: 44px 0 14px;
  }

  .page-about .flow-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }

  .page-about .problem-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
  }

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

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

  .page-about .network-item {
    padding-bottom: 0;
    border-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-dot--pulse { animation: none; }

  .page-about .flow-step:hover,
  .page-about .flow-step:focus-visible { transform: none; }
}
<<<END>>>