.page-about {
  --about-rail: 108px;
  --about-dot: 14px;
  background: var(--paper-100);
  color: var(--ink-900);
  overflow-x: hidden;
}

.page-about .about-hero {
  padding-top: clamp(20px, 3vw, 34px);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: end;
}

.page-about .about-hero-main h1 {
  margin: 12px 0 20px;
  max-width: 15em;
}

.page-about .about-hero-main .lead {
  max-width: 34em;
  margin: 0;
}

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

.page-about .about-board {
  padding: clamp(22px, 3vw, 30px);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-float);
}

.page-about .about-board-eyebrow {
  color: var(--coral-300);
  margin: 0 0 8px;
}

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

.page-about .board-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(247, 240, 228, 0.16);
}

.page-about .board-row:last-child {
  border-bottom: 0;
}

.page-about .board-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--paper-100);
  line-height: 1.1;
}

.page-about .board-label {
  font-size: 14px;
  color: rgba(247, 240, 228, 0.74);
  text-align: right;
}

.page-about .about-board-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(247, 240, 228, 0.66);
  border-top: 1px dashed rgba(247, 240, 228, 0.2);
  padding-top: 14px;
}

/* 章节抬头 */
.page-about .about-head {
  max-width: 46em;
  margin-bottom: clamp(24px, 3.4vw, 38px);
}

.page-about .about-head h2 {
  margin: 10px 0 14px;
}

.page-about .about-head-lead {
  margin: 0;
  color: rgba(21, 38, 45, 0.78);
}

/* 发展路径 */
.page-about .about-journey-media {
  margin: 0 0 clamp(28px, 4vw, 44px);
  border-radius: var(--radius-panel);
  overflow: hidden;
  box-shadow: var(--shadow-panel);
}

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

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line);
}

.page-about .tl-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  position: relative;
}

.page-about .tl-year {
  position: relative;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--ink-800);
  padding-top: 22px;
  text-align: left;
}

.page-about .tl-year::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 26px;
  width: var(--about-dot);
  height: var(--about-dot);
  border-radius: 50%;
  background: var(--coral-500);
  box-shadow: 0 0 0 4px var(--paper-100);
}

.page-about .tl-card {
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--radius-card);
  border-left: 3px solid var(--coral-500);
  box-shadow: var(--shadow-panel);
}

.page-about .tl-card h3 {
  margin: 0 0 10px;
  font-size: clamp(20px, 2.2vw, 26px);
}

.page-about .tl-card p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(21, 38, 45, 0.82);
}

.page-about .tl-card .accordion {
  margin-top: 6px;
}

/* 协作方法 */
.page-about .about-method-panel {
  padding: clamp(24px, 3.6vw, 48px);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-float);
}

.page-about .about-method-head {
  max-width: 44em;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-about .about-method-head .eyebrow {
  color: var(--coral-300);
}

.page-about .about-method-head h2 {
  margin: 10px 0 14px;
  color: var(--paper-100);
}

.page-about .about-method-head p {
  margin: 0;
  color: rgba(247, 240, 228, 0.76);
  line-height: 1.85;
}

.page-about .method-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px 24px;
}

.page-about .method-step {
  border-top: 1px solid rgba(247, 240, 228, 0.24);
  padding-top: 14px;
}

.page-about .step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--coral-300);
  margin-bottom: 8px;
}

.page-about .method-step h3 {
  margin: 0 0 8px;
  font-size: 20px;
  color: var(--paper-100);
}

.page-about .method-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 240, 228, 0.74);
}

.page-about .about-method-foot {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(247, 240, 228, 0.24);
  font-size: 14px;
  color: rgba(247, 240, 228, 0.72);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
}

.page-about .about-inline-link {
  color: var(--celadon-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-inline-link:hover {
  color: var(--paper-100);
}

/* 区域与行业 */
.page-about .about-reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 40px);
  align-items: start;
}

.page-about .about-reach-media {
  margin: 0;
  border-radius: var(--radius-panel);
  overflow: hidden;
  box-shadow: var(--shadow-panel);
}

.page-about .about-reach-body h2 {
  margin: 10px 0 14px;
  font-size: clamp(26px, 3.2vw, 40px);
}

.page-about .about-reach-body > p {
  margin: 0 0 18px;
  color: rgba(21, 38, 45, 0.8);
  line-height: 1.85;
}

.page-about .reach-svg-wrap {
  background: var(--paper-200);
  border-radius: var(--radius-card);
  padding: 14px 18px;
  margin-bottom: 22px;
}

.page-about .reach-svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

.page-about .reach-svg line {
  stroke: var(--rule);
  stroke-width: 1.4;
  stroke-dasharray: 4 4;
}

.page-about .reach-svg circle {
  fill: var(--ink-800);
}

.page-about .reach-svg circle:nth-of-type(even) {
  fill: var(--coral-500);
}

.page-about .reach-subtitle {
  margin: 0 0 12px;
  font-size: 18px;
  color: var(--ink-800);
}

.page-about .reach-industries {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .reach-industries li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  font-size: 15px;
  color: rgba(21, 38, 45, 0.82);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

/* 团队 */
.page-about .about-team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

.page-about .about-team-board {
  padding: 18px;
  border-radius: var(--radius-panel);
  background: var(--ink-950);
  box-shadow: var(--shadow-panel);
}

.page-about .about-team-media {
  margin: 0 0 16px;
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-about .team-facts {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .team-fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(247, 240, 228, 0.14);
}

.page-about .team-fact:last-child {
  border-bottom: 0;
}

.page-about .team-fact dt {
  font-size: 13px;
  color: rgba(247, 240, 228, 0.7);
}

.page-about .team-fact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  color: var(--paper-100);
}

.page-about .team-item {
  background: var(--paper-200);
  border-radius: var(--radius-card);
  padding: 0 clamp(16px, 2vw, 22px);
  margin-bottom: 12px;
  border-left: 3px solid var(--celadon-500);
}

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

/* 资质与治理 */
.page-about .about-cred-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 40px);
  align-items: start;
}

.page-about .about-cred-intro h2 {
  margin: 10px 0 16px;
  font-size: clamp(26px, 3.2vw, 40px);
}

.page-about .about-cred-intro p {
  margin: 0 0 14px;
  color: rgba(21, 38, 45, 0.8);
  line-height: 1.85;
}

.page-about .about-cred-link a {
  color: var(--coral-600);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-size: 15px;
}

.page-about .about-cred-list {
  border-top: 2px solid var(--ink-800);
  padding-top: 8px;
}

.page-about .cred-item {
  border-bottom: 1px solid var(--line);
}

.page-about .cred-item summary {
  font-size: 16px;
}

/* 收尾 */
.page-about .about-next-panel {
  padding: clamp(24px, 3.6vw, 46px);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-float);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: center;
}

.page-about .about-next-copy .eyebrow {
  color: var(--coral-300);
}

.page-about .about-next-copy h2 {
  margin: 10px 0 14px;
  color: var(--paper-100);
  font-size: clamp(26px, 3.2vw, 42px);
}

.page-about .about-next-copy p {
  margin: 0 0 12px;
  color: rgba(247, 240, 228, 0.78);
  line-height: 1.85;
}

.page-about .about-next-contact {
  font-size: 14px;
  color: rgba(247, 240, 228, 0.7);
}

.page-about .about-next-contact a {
  color: var(--celadon-500);
  text-decoration: none;
}

.page-about .about-next-contact a:hover {
  text-decoration: underline;
}

.page-about .about-next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 640px) {
  .page-about .method-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
    gap: 36px;
  }

  .page-about .timeline {
    --about-rail: 116px;
  }

  .page-about .timeline::before {
    left: 39px;
  }

  .page-about .tl-item {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 26px;
  }

  .page-about .tl-year {
    font-size: 18px;
    padding-top: 24px;
    padding-left: 2px;
  }

  .page-about .tl-year::after {
    left: 32px;
    top: 28px;
  }

  .page-about .tl-item:nth-child(even) .tl-card {
    margin-left: 22px;
  }

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

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

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  }

  .page-about .about-cred-grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  }

  .page-about .about-next-panel {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    justify-items: end;
  }

  .page-about .about-next-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1200px) {
  .page-about .method-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .tl-item:nth-child(even) .tl-card {
    margin-left: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-inline-link,
  .page-about .about-next-contact a {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>