.page-about {
  --about-muted: rgba(36, 28, 58, .68);
  --about-rail: 200px;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 24px 0 46px;
  background: linear-gradient(180deg, #FFFFFF 0%, #FDFBFF 100%);
}

.page-about .about-hero-shape {
  position: absolute;
  top: -30%;
  right: -26%;
  width: 86vw;
  height: 86vw;
  max-width: 820px;
  max-height: 820px;
  background:
    radial-gradient(circle at 32% 32%, rgba(255, 106, 26, .30), transparent 62%),
    radial-gradient(circle at 68% 62%, rgba(108, 43, 217, .30), transparent 62%),
    radial-gradient(circle at 48% 90%, rgba(23, 198, 198, .22), transparent 60%);
  filter: blur(4px);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 8vw, 70px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-hero h1 em {
  display: inline-block;
  position: relative;
  font-style: normal;
  color: var(--orange);
}

.page-about .about-hero h1 em::after {
  content: "";
  position: absolute;
  left: -1%;
  right: -1%;
  bottom: 0.08em;
  height: 0.24em;
  border-radius: 4px;
  background: linear-gradient(90deg, rgba(255, 216, 77, .95), rgba(183, 245, 58, .9));
  z-index: -1;
}

.page-about .about-lead {
  margin: 22px 0 0;
  max-width: 40em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--about-muted);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 32px;
}

.page-about .figure-item {
  padding: 16px 16px 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  box-shadow: 0 10px 24px -22px rgba(36, 28, 58, .7);
}

.page-about .figure-item:nth-child(2) {
  border-color: rgba(108, 43, 217, .26);
}

.page-about .figure-item:nth-child(3) {
  border-color: rgba(23, 198, 198, .30);
}

.page-about .figure-item:nth-child(4) {
  border-color: rgba(255, 216, 77, .8);
}

.page-about .figure-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 32px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--purple);
}

.page-about .figure-item:nth-child(1) .figure-num {
  color: var(--orange);
}

.page-about .figure-item:nth-child(3) .figure-num {
  color: var(--cyan);
}

.page-about .figure-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--about-muted);
}

/* ---------- 品牌主张 ---------- */
.page-about .about-belief {
  padding: 52px 0 8px;
}

.page-about .belief-grid {
  align-items: start;
}

.page-about .about-belief h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .belief-copy .prose {
  margin-top: 18px;
}

.page-about .belief-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .belief-item {
  position: relative;
  padding: 18px 18px 16px;
  background: var(--mist);
  border-radius: var(--r-card);
  border-left: 4px solid var(--purple);
}

.page-about .belief-item:nth-child(2) {
  border-left-color: var(--orange);
}

.page-about .belief-item:nth-child(3) {
  border-left-color: var(--cyan);
}

.page-about .belief-idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--purple);
  background: rgba(255, 216, 77, .45);
  padding: 3px 8px;
  border-radius: var(--r-chip);
}

.page-about .belief-item strong {
  display: block;
  margin: 10px 0 6px;
  font-size: 16px;
  color: var(--ink);
}

.page-about .belief-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-muted);
}

/* ---------- 发展阶段 ---------- */
.page-about .about-journey {
  padding: 56px 0 48px;
}

.page-about .journey-grid {
  display: grid;
  gap: 26px;
}

.page-about .stage-rail {
  position: relative;
}

.page-about .stage-list {
  list-style: none;
  display: flex;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .stage-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: var(--r-chip);
  background: var(--white);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}

.page-about .stage-link:hover {
  background: var(--mist);
  border-color: rgba(108, 43, 217, .35);
  transform: translateY(-2px);
}

.page-about .stage-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--orange);
}

.page-about .stage-block {
  padding: 0 0 30px;
  scroll-margin-top: 120px;
}

.page-about .stage-block + .stage-block {
  margin-top: 26px;
}

.page-about .stage-block::before {
  content: "";
  display: block;
  width: 68px;
  height: 8px;
  margin-bottom: 18px;
  background: linear-gradient(90deg, var(--orange), var(--purple));
  clip-path: polygon(0 40%, 100% 0, 100% 62%, 0 100%);
}

.page-about .stage-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ink);
  background: var(--yellow);
  padding: 4px 10px;
  border-radius: var(--r-chip);
}

.page-about .stage-block h3 {
  margin: 14px 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4vw, 30px);
  line-height: 1.25;
  color: var(--ink);
}

.page-about .stage-block p {
  margin: 0 0 12px;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--about-muted);
}

.page-about .stage-note {
  display: inline-block;
  margin-top: 6px;
  padding: 7px 15px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  background: rgba(183, 245, 58, .38);
  border-radius: 14px 4px 14px 4px;
  transform: rotate(-1.2deg);
}

/* ---------- 轨迹图 ---------- */
.page-about .about-trajectory {
  padding: 0 0 52px;
}

.page-about .trajectory-frame {
  border-radius: var(--r-card);
  overflow: hidden;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: 0 0 56px;
}

.page-about .team-head {
  max-width: 44em;
}

.page-about .about-team h2,
.page-about .about-method h2,
.page-about .about-cover h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .team-lead,
.page-about .method-lead {
  margin: 16px 0 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--about-muted);
}

.page-about .team-photo {
  margin-top: 28px;
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-about .role-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .role-card {
  position: relative;
  padding: 18px 16px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--orange);
  border-radius: var(--r-card);
  box-shadow: 0 8px 22px -20px rgba(36, 28, 58, .8);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease);
}

.page-about .role-card--purple {
  border-top-color: var(--purple);
}

.page-about .role-card--cyan {
  border-top-color: var(--cyan);
}

.page-about .role-card--lime {
  border-top-color: var(--lime);
}

.page-about .role-card:hover,
.page-about .role-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 16px 30px -22px rgba(36, 28, 58, .95);
  outline: none;
}

.page-about .role-idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--purple);
  background: var(--mist);
  padding: 3px 8px;
  border-radius: var(--r-chip);
}

.page-about .role-card h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  color: var(--ink);
}

.page-about .role-brief {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-muted);
}

.page-about .role-detail {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--purple);
}

@media (hover: hover) {
  .page-about .role-detail {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .32s var(--ease), opacity .32s var(--ease), margin-top .32s var(--ease);
  }

  .page-about .role-card:hover .role-detail,
  .page-about .role-card:focus-within .role-detail,
  .page-about .role-card:focus-visible .role-detail {
    max-height: 220px;
    margin-top: 10px;
    opacity: 1;
  }
}

/* ---------- 案例四段 ---------- */
.page-about .about-method {
  padding: 0 0 56px;
}

.page-about .case-steps {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  counter-reset: none;
}

.page-about .case-step {
  position: relative;
  padding: 20px 18px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-about .case-step::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--orange), var(--pink));
}

.page-about .case-step:nth-child(2)::after {
  background: linear-gradient(90deg, var(--purple), var(--pink));
}

.page-about .case-step:nth-child(3)::after {
  background: linear-gradient(90deg, var(--cyan), var(--lime));
}

.page-about .case-step:nth-child(4)::after {
  background: linear-gradient(90deg, var(--lime), var(--yellow));
}

.page-about .case-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--about-muted);
}

.page-about .case-step h3 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  color: var(--ink);
}

.page-about .case-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--about-muted);
}

/* ---------- 覆盖版图 ---------- */
.page-about .about-cover {
  padding: 0 0 56px;
}

.page-about .cover-head {
  max-width: 44em;
}

.page-about .cover-banner {
  margin-top: 26px;
}

.page-about .cover-banner img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border-radius: 0;
}

.page-about .cover-switch {
  position: relative;
  margin-top: 26px;
}

.page-about .cover-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-about .cover-tabs {
  display: inline-flex;
  gap: 6px;
  padding: 5px;
  background: var(--mist);
  border-radius: var(--r-chip);
}

.page-about .cover-tab {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--about-muted);
  border-radius: var(--r-chip);
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-about #coverview-province:checked ~ .cover-tabs .cover-tab[for="coverview-province"],
.page-about #coverview-scene:checked ~ .cover-tabs .cover-tab[for="coverview-scene"] {
  background: var(--white);
  color: var(--ink);
  box-shadow: 0 4px 12px -10px rgba(36, 28, 58, .9);
}

.page-about .cover-radio:focus-visible ~ .cover-tabs {
  outline: 2px solid var(--purple);
  outline-offset: 3px;
}

.page-about .cover-panel {
  display: none;
  margin-top: 20px;
}

.page-about #coverview-province:checked ~ .cover-panel--province,
.page-about #coverview-scene:checked ~ .cover-panel--scene {
  display: block;
}

.page-about .cover-map {
  position: relative;
  min-height: 190px;
  border-radius: var(--r-card);
  background-color: var(--neon);
  background-image: radial-gradient(circle, rgba(245, 242, 255, .34) 1.4px, transparent 1.6px);
  background-size: 24px 24px;
  overflow: hidden;
}

.page-about .map-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(26px);
  opacity: .82;
}

.page-about .map-blob--a {
  top: 14%;
  left: 18%;
  width: 38%;
  height: 58%;
  background: radial-gradient(circle, rgba(255, 106, 26, .9), transparent 70%);
}

.page-about .map-blob--b {
  top: 30%;
  left: 42%;
  width: 42%;
  height: 62%;
  background: radial-gradient(circle, rgba(108, 43, 217, .9), transparent 70%);
}

.page-about .map-blob--c {
  top: 42%;
  left: 62%;
  width: 34%;
  height: 52%;
  background: radial-gradient(circle, rgba(183, 245, 58, .75), transparent 70%);
}

.page-about .cover-facts {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
}

.page-about .cover-facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 13px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
}

.page-about .cover-facts strong {
  flex: none;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 24px;
  line-height: 1;
  color: var(--purple);
}

.page-about .cover-facts li:nth-child(2) strong {
  color: var(--orange);
}

.page-about .cover-facts li:nth-child(3) strong {
  color: var(--cyan);
}

.page-about .cover-facts span {
  font-size: 14px;
  line-height: 1.6;
  color: var(--about-muted);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  position: relative;
  padding: 58px 0 66px;
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 106, 26, .34), transparent 58%),
    radial-gradient(circle at 84% 76%, rgba(108, 43, 217, .38), transparent 60%),
    var(--neon);
  overflow: hidden;
}

.page-about .about-cta-inner {
  position: relative;
  z-index: 1;
}

.page-about .about-cta .kicker {
  color: var(--lime);
}

.page-about .cta-claim {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 8vw, 68px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .cta-lead {
  margin: 18px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(245, 242, 255, .78);
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .role-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .case-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

@media (min-width: 900px) {
  .page-about .about-journey {
    padding: 72px 0 60px;
  }

  .page-about .journey-grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 54px;
    align-items: start;
  }

  .page-about .stage-rail {
    position: sticky;
    top: 112px;
    align-self: start;
  }

  .page-about .stage-list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
  }

  .page-about .stage-link {
    width: 100%;
    justify-content: flex-start;
  }

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

  .page-about .cover-banner img {
    border-radius: 22px 6px 22px 6px;
  }

  .page-about .cover-map {
    min-height: 240px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero {
    padding: 34px 0 58px;
  }

  .page-about .about-lead {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .role-card,
  .page-about .role-detail,
  .page-about .stage-link,
  .page-about .cover-tab {
    transition: none;
  }

  .page-about .stage-note {
    transform: none;
  }
}
<<<END>>>