.page-about {
  --about-gap: clamp(20px, 3vw, 40px);
  --about-title-shadow: 0 18px 46px rgba(0, 0, 0, 0.45);
}

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

.page-about .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 32px);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s ease;
}

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

.page-about .breadcrumb span[aria-current="page"] {
  color: var(--text);
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 48px) 0 clamp(40px, 6vw, 80px);
  background-image:
    radial-gradient(58% 88% at 12% 0%, rgba(200, 255, 61, 0.13), transparent 68%),
    radial-gradient(52% 76% at 88% 14%, rgba(240, 180, 41, 0.10), transparent 70%);
  background-repeat: no-repeat;
}

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

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--text);
  text-shadow: var(--about-title-shadow);
}

.page-about .about-hero__title::after {
  content: "";
  display: block;
  width: 88px;
  height: 4px;
  margin-top: 20px;
  border-radius: var(--pill);
  background: linear-gradient(90deg, var(--lime), var(--amber));
}

.page-about .about-hero .page-hero__lead {
  margin: 22px 0 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 18px;
  margin: 32px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stat__value {
  font-family: var(--mono);
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-stat__value--amber {
  color: var(--amber);
}

.page-about .about-stat__unit {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  aspect-ratio: 4 / 3;
  background: var(--ink-deep);
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(5, 19, 14, 0.82));
  pointer-events: none;
}

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

.page-about .about-hero__figure .media-frame__caption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  z-index: 1;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  line-height: 1.6;
  color: var(--lime-soft);
}

/* ============ 非对称骨架 ============ */
.page-about .about-frame {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-about .about-rail__inner {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(18, 46, 36, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-about .about-rail .eyebrow {
  margin: 0 0 10px;
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-rail__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-rail__list li {
  flex: 0 0 auto;
}

.page-about .season-tick {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  background: rgba(200, 255, 61, 0.05);
  font-size: 13px;
  letter-spacing: 0.05em;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.page-about .season-tick .num {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--amber);
}

.page-about .season-tick:hover,
.page-about .season-tick:focus-visible {
  color: var(--text);
  background: rgba(200, 255, 61, 0.12);
  border-color: var(--line);
}

.page-about .season-tick:hover .num,
.page-about .season-tick:focus-visible .num {
  color: var(--lime);
}

/* ============ 内容流 ============ */
.page-about .about-stream > .section + .section {
  margin-top: clamp(48px, 7vw, 88px);
}

.page-about .about-stream .section-head {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-end;
  justify-content: space-between;
}

.page-about .about-stream h2 {
  margin: 8px 0 0;
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.22;
  color: var(--text);
}

/* ============ 阶段时间轴 ============ */
.page-about .about-filter {
  margin: 26px 0 8px;
}

.page-about .stage {
  padding: clamp(26px, 4vw, 44px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .stage:first-of-type {
  border-top: 0;
  padding-top: clamp(18px, 3vw, 28px);
}

.page-about .stage__years {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: clamp(28px, 5.4vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--amber);
}

.page-about .stage__title {
  margin: 0 0 14px;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1.32;
  color: var(--text);
}

.page-about .stage__body {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--muted);
}

.page-about .stage[data-inert] {
  opacity: 0.35;
}

/* ============ 三级校验 ============ */
.page-about .verify__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .verify__flow {
  margin: 32px 0 0;
}

.page-about .verify__track {
  display: none;
  width: 100%;
  height: 40px;
  margin-bottom: 6px;
}

.page-about .verify__steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .verify__step {
  position: relative;
  padding: 22px 20px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-about .verify__step:hover,
.page-about .verify__step:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(200, 255, 61, 0.42);
}

.page-about .verify__index {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: rgba(200, 255, 61, 0.42);
}

.page-about .verify__step h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-about .verify__step p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .verify__figure {
  margin: 32px 0 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: var(--ink-deep);
}

.page-about .verify__figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .verify__figure .media-frame__caption {
  padding: 12px 16px 16px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ============ 月度回溯 ============ */
.page-about .repair {
  padding: clamp(28px, 4vw, 44px) clamp(20px, 3vw, 36px);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(43, 35, 80, 0.85), rgba(11, 33, 26, 0.9));
  border: 1px solid var(--line-soft);
}

.page-about .repair__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 22px;
}

.page-about .repair__prose p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(233, 242, 236, 0.86);
}

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

.page-about .repair__panel {
  padding: 22px 20px;
  border-radius: var(--radius);
}

.page-about .repair__panel .exhibit-label {
  margin: 0 0 14px;
}

.page-about .repair__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .repair__list li {
  position: relative;
  padding: 10px 0 10px 22px;
  border-bottom: 1px dashed var(--line);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

.page-about .repair__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 10px;
  height: 2px;
  border-radius: var(--pill);
  background: var(--lime);
}

.page-about .repair__list li:last-child {
  border-bottom: 0;
}

.page-about .repair__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ============ 团队 ============ */
.page-about .team__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .team__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 30px;
}

.page-about .team__role {
  padding: 26px 22px 28px;
  border-radius: var(--radius);
}

.page-about .team__count {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: clamp(40px, 6vw, 58px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .team__count--amber {
  color: var(--amber);
}

.page-about .team__role h3 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-about .team__role p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .team__rhythm {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-about .team__rhythm h3 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--lime-soft);
}

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

.page-about .team__rhythm-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(18, 46, 36, 0.62);
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .team__rhythm-list .num {
  flex: 0 0 auto;
  min-width: 4.4em;
  font-family: var(--mono);
  font-weight: 700;
  color: var(--amber);
}

/* ============ 合作生态 ============ */
.page-about .partners__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .partners__copy > p {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .partners__list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-about .partners__list li {
  padding: 18px 0 18px 20px;
  border-left: 2px solid rgba(200, 255, 61, 0.24);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .partners__list li:hover {
  border-left-color: var(--amber);
  background: rgba(200, 255, 61, 0.04);
}

.page-about .partners__list h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
}

.page-about .partners__list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--muted);
}

.page-about .partners__figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

.page-about .partners__figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-about .partners__figure .media-frame__caption {
  padding: 12px 16px 16px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ============ 收尾 ============ */
.page-about .about-cta__box {
  padding: clamp(28px, 4vw, 44px) clamp(22px, 3vw, 40px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(74, 27, 42, 0.9) 0%, rgba(11, 33, 26, 0.92) 62%),
    var(--ink-deep);
}

.page-about .about-cta__box h2 {
  margin: 0;
}

.page-about .about-cta__box p {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ============ 断点 ============ */
@media (min-width: 720px) {
  .page-about .verify__track {
    display: block;
  }

  .page-about .verify__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-hero__figure {
    aspect-ratio: 3 / 4;
  }

  .page-about .about-frame {
    grid-template-columns: minmax(0, 1fr) minmax(0, 3fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-rail__inner {
    position: sticky;
    top: 92px;
    padding: 20px 16px;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
  }

  .page-about .about-rail__list li {
    flex: 0 0 auto;
  }

  .page-about .season-tick {
    display: flex;
    justify-content: flex-start;
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    border-left: 2px solid transparent;
    background: transparent;
  }

  .page-about .season-tick:hover,
  .page-about .season-tick:focus-visible {
    border-left-color: var(--lime);
  }

  .page-about .repair__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 32px;
  }

  .page-about .partners__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .verify__step,
  .page-about .season-tick,
  .page-about .breadcrumb a {
    transition: none;
  }

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