.page-about {
  --about-num: clamp(58px, 13vw, 148px);
  --about-chapter-pad: clamp(44px, 7vw, 92px);
  --about-body-text: rgba(242, 246, 248, 0.82);
  --reveal-delay: 0ms;
  padding-bottom: clamp(48px, 8vw, 108px);
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: clip;
}

.page-about img {
  max-width: 100%;
  display: block;
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 2.4vw, 24px);
  color: var(--mist);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-about .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(16px, 3vw, 32px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -14%;
  width: min(620px, 78vw);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(95, 245, 227, 0.16), transparent 64%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 5vw, 56px);
  align-items: end;
}

.page-about .about-hero__title {
  margin: 0.28em 0 0;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(34px, 7.4vw, 76px);
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 32em;
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.78;
  color: rgba(242, 246, 248, 0.9);
}

.page-about .about-hero__note {
  margin: clamp(12px, 2vw, 18px) 0 0;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-hero__media {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  box-shadow: 0 34px 78px -46px rgba(0, 0, 0, 0.92);
}

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

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

/* ---------- 数据带 ---------- */
.page-about .about-facts {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-facts__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(15px, 2.4vw, 24px);
  background: var(--ink-800);
}

.page-about .about-facts__num {
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-about .about-facts__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 编号章节 ---------- */
.page-about .about-chapter {
  position: relative;
  display: grid;
  gap: clamp(10px, 2vw, 18px);
  margin-top: clamp(38px, 6vw, 78px);
  padding-top: var(--about-chapter-pad);
  border-top: 1px solid var(--line);
}

.page-about .about-chapter__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: var(--about-num);
  line-height: 0.78;
  letter-spacing: 0.01em;
  color: rgba(95, 245, 227, 0.1);
  -webkit-text-stroke: 1px rgba(95, 245, 227, 0.42);
  user-select: none;
}

.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 400;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.28;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-chapter__text {
  margin: clamp(12px, 2vw, 18px) 0 0;
  max-width: 40em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.82;
  color: var(--about-body-text);
}

/* ---------- 服务范围卡片 ---------- */
.page-about .about-panels {
  display: grid;
  gap: clamp(12px, 2vw, 20px);
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-about .about-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(23, 57, 92, 0.62), rgba(11, 31, 58, 0.92));
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-panel:hover {
  border-color: rgba(95, 245, 227, 0.5);
  transform: translateY(-2px);
}

.page-about .about-panel__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-panel__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-panel__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 时间线 ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(22px, 3.4vw, 38px);
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-about .about-split__media {
  aspect-ratio: 10 / 7;
  border-radius: var(--radius-md);
}

.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 34px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(255, 122, 47, 0.8) 62%, rgba(23, 57, 92, 0.9));
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: clamp(20px, 3vw, 30px);
}

.page-about .timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 5px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
}

.page-about .timeline__item:last-child::before {
  border-color: var(--orange);
  box-shadow: 0 0 0 5px rgba(255, 122, 47, 0.14);
}

.page-about .timeline__year {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .timeline__item:last-child .timeline__year {
  color: var(--orange);
}

.page-about .timeline__title {
  margin: 6px 0 0;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: clamp(17px, 1.9vw, 20px);
  line-height: 1.4;
  color: var(--paper);
}

.page-about .timeline__text {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 团队（浅色过渡区） ---------- */
.page-about .about-team {
  position: relative;
  margin-top: clamp(46px, 7vw, 92px);
  padding-block: clamp(44px, 7vw, 88px);
  color: var(--ink-900);
  background:
    radial-gradient(115% 78% at 102% 0%, rgba(95, 245, 227, 0.2), transparent 62%),
    radial-gradient(90% 60% at -10% 100%, rgba(255, 122, 47, 0.12), transparent 60%),
    var(--paper);
}

.page-about .about-team .about-chapter {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-about .about-team .about-chapter__num {
  color: rgba(7, 20, 38, 0.1);
  -webkit-text-stroke: 1px rgba(7, 20, 38, 0.36);
}

.page-about .about-team .about-chapter__title {
  color: var(--ink-900);
}

.page-about .about-team .about-chapter__text {
  color: rgba(7, 20, 38, 0.78);
}

.page-about .about-team__media {
  margin-top: clamp(22px, 3.4vw, 34px);
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-md);
  border-color: rgba(7, 20, 38, 0.14);
}

.page-about .about-roles {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
  margin-top: clamp(20px, 3vw, 28px);
}

.page-about .about-role {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: clamp(16px, 2.4vw, 24px);
  border: 1px solid rgba(7, 20, 38, 0.12);
  border-radius: var(--radius-md);
  background: #ffffff;
}

.page-about .about-role__num {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-700);
}

.page-about .about-role__name {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--ink-900);
}

.page-about .about-role__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(7, 20, 38, 0.72);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-about .about-partner-stat {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
}

.page-about .about-partner-stat__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(11, 31, 58, 0.86);
}

.page-about .about-partner-stat__num {
  font-size: clamp(32px, 4.4vw, 50px);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .about-partner-stat__item:nth-child(2) .about-partner-stat__num {
  color: var(--orange);
}

.page-about .about-partner-stat__label {
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-recognition {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(10px, 1.8vw, 16px);
}

.page-about .about-recognition__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  padding: clamp(15px, 2.2vw, 20px);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(150deg, rgba(23, 57, 92, 0.5), rgba(7, 20, 38, 0.72));
}

.page-about .about-recognition__item::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--amber);
}

.page-about .about-recognition__item strong {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
}

.page-about .about-recognition__text {
  grid-column: 2;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  margin-top: clamp(22px, 3.4vw, 34px);
  padding: clamp(24px, 4.6vw, 54px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(23, 57, 92, 0.94), rgba(7, 20, 38, 0.98));
}

.page-about .about-cta::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -46%;
  width: min(520px, 82%);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(255, 122, 47, 0.24), transparent 66%);
  pointer-events: none;
}

.page-about .about-cta__label {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .about-cta__title {
  position: relative;
  z-index: 1;
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 400;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-cta__text {
  position: relative;
  z-index: 1;
  margin: 12px 0 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 246, 248, 0.78);
}

.page-about .about-cta__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-about .about-cta__links {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(14px, 2.4vw, 26px);
  margin: clamp(16px, 2.6vw, 24px) 0 0;
  font-size: 14px;
}

.page-about .about-cta__links a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-cta__links a:hover,
.page-about .about-cta__links a:focus-visible {
  color: var(--cyan);
  border-bottom-color: rgba(95, 245, 227, 0.6);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-about .about-panels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-panel--wide {
    grid-column: span 2;
  }

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

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

  .page-about .about-hero__media {
    aspect-ratio: 14 / 9;
  }
}

@media (min-width: 900px) {
  .page-about .about-split {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
  }

  .page-about .about-partners {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.02fr 0.98fr;
    column-gap: clamp(32px, 4vw, 64px);
  }

  .page-about .about-chapter {
    grid-template-columns: minmax(130px, 240px) minmax(0, 1fr);
    column-gap: clamp(26px, 4vw, 72px);
    align-items: start;
  }

  .page-about .about-chapter__num {
    position: sticky;
    top: clamp(24px, 4vw, 56px);
  }
}

@media (min-width: 1080px) {
  .page-about .about-panels {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-panel {
    grid-column: span 3;
  }

  .page-about .about-panel--wide {
    grid-column: span 6;
    padding-right: clamp(28px, 5vw, 72px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-panel,
  .page-about .about-cta__links a {
    transition: none;
  }

  .page-about .about-panel:hover {
    transform: none;
  }
}
<<<END>>>