.page-about {
  --about-rail: 210px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(24px, 4.6vw, 52px) clamp(30px, 5vw, 62px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(232, 240, 254, 0.95) 0%, rgba(247, 243, 234, 0) 60%),
    linear-gradient(180deg, rgba(247, 243, 234, 0) 0%, rgba(247, 243, 234, 0) 100%);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 54px);
  align-items: start;
}

.page-about .about-h1 {
  margin: 0.55rem 0 0;
  font-size: clamp(30px, 5vw, 56px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink);
  max-width: 16em;
}

.page-about .about-lead {
  margin: 1.15rem 0 0;
  max-width: 33em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: #34344a;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 1.7rem;
}

.page-about .about-index {
  background: var(--cream);
  border-top: 3px solid var(--blue);
  padding: 18px 20px 20px;
  box-shadow: 8px 8px 0 0 var(--mist);
}

.page-about .about-index-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-about .about-index-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-about .about-index-link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-soft);
  color: var(--ink);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-about .about-index-list li:last-child .about-index-link {
  border-bottom: 0;
}

.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  color: var(--blue);
  transform: translateX(3px);
}

.page-about .about-index-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
}

.page-about .about-index-year {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--stone);
  white-space: nowrap;
}

/* ---------- 起点 ---------- */
.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 58px);
  align-items: start;
}

.page-about .about-origin-media {
  aspect-ratio: 12 / 7;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--mist);
}

.page-about .about-origin-media img,
.page-about .about-timeline-media img,
.page-about .about-team-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-origin-text h2,
.page-about .about-cap-head h2,
.page-about .about-timeline-rail h2,
.page-about .about-team-main h2,
.page-about .about-eco-head h2,
.page-about .about-cta-grid h2 {
  margin: 0.5rem 0 0;
  font-size: clamp(24px, 3.1vw, 36px);
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-origin-text .prose,
.page-about .about-team-main .prose,
.page-about .about-eco-head .prose,
.page-about .about-cta-grid .prose {
  margin: 1rem 0 0;
  line-height: 1.9;
  color: #34344a;
}

.page-about .about-origin-facts {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-origin-fact {
  background: var(--cream);
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}

.page-about .about-origin-fact-k {
  font-family: var(--font-mono);
  color: var(--stone);
  letter-spacing: 0.08em;
}

.page-about .about-origin-fact-v {
  color: var(--blue);
  font-weight: 700;
}

/* ---------- 能力带 ---------- */
.page-about .about-cap-head .prose {
  margin: 1rem 0 0;
  line-height: 1.9;
  color: #34344a;
}

.page-about .about-cap-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-cap-item {
  background: var(--cream);
  padding: clamp(18px, 2.4vw, 26px);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-about .about-cap-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.page-about .about-cap-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--blue);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--blue);
  background: rgba(232, 240, 254, 0.6);
}

.page-about .about-cap-item h3 {
  margin: 14px 0 0;
  font-size: clamp(17px, 1.8vw, 20px);
  line-height: 1.4;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-cap-item p {
  margin: 0.6rem 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: #40405a;
}

.page-about .about-cap-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 0;
  padding: 0;
}

.page-about .about-cap-services {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 26px);
  margin-top: clamp(22px, 3vw, 36px);
}

.page-about .about-svc {
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
}

.page-about .about-svc-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-svc h3 {
  margin: 8px 0 0;
  font-size: 17px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-svc p {
  margin: 0.55rem 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: #40405a;
}

.page-about .about-svc .link-more {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 60px);
  align-items: start;
}

.page-about .about-timeline-media {
  aspect-ratio: 10 / 6;
  overflow: hidden;
  margin-top: 1.2rem;
  border: 1px solid var(--line);
  background: var(--mist);
}

.page-about .about-rail-note {
  margin: 0.85rem 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
  border-left: 2px solid var(--orange);
  padding-left: 10px;
}

.page-about .about-line {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .about-line::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line);
}

.page-about .about-line-item {
  position: relative;
  padding: 4px 0 26px;
  transition: transform 0.25s var(--ease);
}

.page-about .about-line-node {
  position: absolute;
  left: -24px;
  top: 12px;
  width: 9px;
  height: 9px;
  background: var(--cream);
  border: 1px solid var(--stone);
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-about .about-line-item:hover .about-line-node,
.page-about .about-line-item:focus-within .about-line-node {
  background: var(--orange);
  border-color: var(--orange);
  transform: scale(1.25);
}

.page-about .about-line-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--blue);
  transition: color 0.22s var(--ease);
}

.page-about .about-line-item:hover .about-line-year {
  color: var(--orange-deep);
}

.page-about .about-line-item h3 {
  margin: 6px 0 0;
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.45;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-line-item p {
  margin: 0.55rem 0 0;
  max-width: 33em;
  font-size: 14px;
  line-height: 1.85;
  color: #40405a;
}

/* ---------- 团队 ---------- */
.page-about .about-team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
  align-items: start;
}

.page-about .about-team-stats {
  margin-top: clamp(20px, 2.6vw, 30px);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-team-stats .stat {
  background: var(--cream);
  padding: 16px 14px;
}

.page-about .about-team-stats .stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.4vw, 40px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--blue);
}

.page-about .about-team-stats .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--stone);
}

.page-about .about-team-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--mist);
}

/* ---------- 生态 ---------- */
.page-about .about-eco-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-eco-card {
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  background: var(--cream);
  padding: 20px 20px 22px;
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-about .about-eco-card:hover {
  border-left-color: var(--orange);
  transform: translateY(-3px);
}

.page-about .about-eco-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--stone);
}

.page-about .about-eco-card h3 {
  margin: 8px 0 0;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-eco-card p {
  margin: 0.55rem 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: #40405a;
}

.page-about .about-eco-note {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-soft);
  max-width: 60em;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--stone);
}

/* ---------- 荣誉（深色区） ---------- */
.page-about .about-honors {
  background: var(--ink);
  color: var(--cream);
  border-top: 4px solid var(--blue);
}

.page-about .about-honors .kicker {
  color: var(--orange);
}

.page-about .about-honors h2 {
  margin: 0.5rem 0 0;
  font-size: clamp(24px, 3.1vw, 36px);
  line-height: 1.24;
  font-weight: 800;
  color: #fff;
}

.page-about .about-honors-lead {
  margin: 1rem 0 0;
  max-width: 46em;
  font-size: 14.5px;
  line-height: 1.9;
  color: rgba(247, 243, 234, 0.78);
}

.page-about .about-honor-list {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .about-honor-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 18px 20px;
  border: 1px solid var(--line-dark);
  background: rgba(247, 243, 234, 0.03);
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-about .about-honor-item:hover {
  border-color: var(--orange);
  background: rgba(255, 107, 53, 0.08);
}

.page-about .about-honor-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--orange);
  padding-top: 2px;
}

.page-about .about-honor-item h3 {
  margin: 0;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 700;
  color: #fff;
}

.page-about .about-honor-item p {
  margin: 0.5rem 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(247, 243, 234, 0.75);
}

.page-about .about-honor-more {
  margin-top: 14px;
  border: 1px dashed var(--line-dark);
}

.page-about .about-honor-more > summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--peach);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-about .about-honor-more > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-honor-more > summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--orange);
  font-size: 15px;
  line-height: 1;
}

.page-about .about-honor-more[open] > summary::after {
  content: "–";
}

.page-about .about-honor-more > summary:hover {
  background: rgba(255, 227, 214, 0.06);
}

.page-about .about-honor-more-body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--line-dark);
}

.page-about .about-honor-more-body p {
  margin: 14px 0 0;
  max-width: 46em;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(247, 243, 234, 0.75);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  background: linear-gradient(135deg, var(--mist) 0%, var(--cream) 100%);
  border-top: 1px solid var(--line);
}

.page-about .about-cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 48px);
  align-items: center;
}

.page-about .about-cta-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--line);
}

.page-about .about-cta-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 2px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  transition: color 0.22s var(--ease), padding-left 0.22s var(--ease);
}

.page-about .about-cta-link::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--orange);
  transition: transform 0.22s var(--ease);
}

.page-about .about-cta-link:hover,
.page-about .about-cta-link:focus-visible {
  color: var(--blue);
  padding-left: 8px;
}

.page-about .about-cta-link:hover::after {
  transform: translateX(4px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-cap-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 960px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 340px);
  }

  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .page-about .about-origin-figure {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-about .about-timeline-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-about .about-timeline-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    align-self: start;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-about .about-team-figure {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

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

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

  .page-about .about-cta-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
}

@media (min-width: 1180px) {
  .page-about .about-cap-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>