.page-about {
  background: var(--night);
  color: var(--cream);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--header-h) + 2.25rem) 0 3.25rem;
  background:
    radial-gradient(115% 85% at 82% 0%, rgba(46, 139, 87, 0.42), transparent 62%),
    radial-gradient(85% 60% at 8% 100%, rgba(198, 255, 61, 0.09), transparent 70%),
    var(--night);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -14%;
  right: -22%;
  width: min(66vw, 760px);
  aspect-ratio: 1;
  background: linear-gradient(158deg, rgba(31, 107, 69, 0.9), rgba(11, 31, 23, 0) 72%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 76%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: auto 0 0 0;
  height: 120px;
  background: repeating-linear-gradient(90deg, rgba(198, 255, 61, 0.07) 0 2px, transparent 2px 62px);
  -webkit-mask-image: linear-gradient(to top, #000, transparent);
  mask-image: linear-gradient(to top, #000, transparent);
}

.page-about .breadcrumbs {
  margin-bottom: 2rem;
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--rock);
}

.page-about .breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--grass);
}

.page-about .breadcrumbs a {
  color: var(--rock);
  text-decoration: none;
}

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

.page-about .breadcrumbs [aria-current="page"] {
  color: var(--lime);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-hero h1 {
  margin: 0.9rem 0 1.25rem;
  color: var(--cream);
  line-height: 0.98;
  letter-spacing: -0.035em;
}

.page-about .about-hero__lead {
  max-width: 34em;
  color: rgba(232, 226, 214, 0.82);
}

.page-about .about-hero__actions {
  margin-top: 1.9rem;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  align-self: end;
  border: 1px solid rgba(154, 167, 158, 0.24);
  border-radius: var(--radius);
  background: rgba(154, 167, 158, 0.24);
  overflow: hidden;
}

.page-about .stat {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.1rem 1rem;
  background: rgba(9, 26, 19, 0.72);
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4.4vw, 2rem);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
  line-height: 1;
}

.page-about .stat-label {
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--rock);
}

/* ---------- 缘起 ---------- */
.page-about .about-origin__inner {
  display: grid;
  gap: 2.25rem;
}

.page-about .about-origin__figure {
  margin: 0;
}

.page-about .about-origin__figure figcaption {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--rock);
  letter-spacing: 0.02em;
}

.page-about .about-origin__text h2 {
  color: var(--cream);
  margin: 0.6rem 0 1rem;
}

.page-about .about-origin__text p {
  color: rgba(232, 226, 214, 0.78);
  max-width: 36em;
}

.page-about .about-origin__text p:first-of-type::first-letter {
  float: left;
  margin: 0.08em 0.14em 0 0;
  font-family: var(--font-serif);
  font-size: 3.1em;
  line-height: 0.86;
  font-weight: 600;
  color: var(--lime);
}

/* ---------- 跟队文化 ---------- */
.page-about .about-culture__head {
  max-width: 42rem;
}

.page-about .about-culture__head h2 {
  margin: 0.6rem 0 1rem;
  color: var(--charcoal);
}

.page-about .about-culture__intro {
  color: #45514a;
  max-width: 34em;
}

.page-about .about-culture__body {
  display: grid;
  gap: 2rem;
  margin-top: 2.25rem;
}

.page-about .about-culture__figure {
  margin: 0;
}

.page-about .about-culture__figure figcaption {
  margin-top: 0.7rem;
  font-size: 0.8rem;
  color: #64706a;
}

.page-about .about-culture__hint {
  margin: 0 0 0.85rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: #6c7a72;
}

.page-about .quote-rail {
  display: flex;
  gap: 0.9rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 0.9rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .quote-card {
  flex: 0 0 min(84%, 400px);
  scroll-snap-align: start;
  margin: 0;
  padding: 1.5rem 1.4rem;
  background: #fffef9;
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: 0 12px 28px -22px rgba(30, 36, 33, 0.7);
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.65;
  color: var(--charcoal);
}

/* ---------- 团队 ---------- */
.page-about .about-team__head {
  max-width: 44rem;
}

.page-about .about-team__head h2 {
  margin: 0.6rem 0 1rem;
  color: var(--cream);
}

.page-about .about-team__intro {
  color: rgba(232, 226, 214, 0.76);
  max-width: 36em;
}

.page-about .team-tree {
  display: grid;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.page-about .team-root {
  display: inline-flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.75rem 1.15rem;
  border: 1px solid rgba(198, 255, 61, 0.38);
  border-radius: var(--radius);
  background: rgba(198, 255, 61, 0.07);
  justify-self: start;
}

.page-about .team-root-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.page-about .team-root-label {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--cream);
}

.page-about .team-branches {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .team-branch {
  position: relative;
  padding: 1.1rem 1.15rem 1.2rem 1.15rem;
  border-left: 2px solid rgba(240, 138, 36, 0.65);
  background: rgba(18, 61, 42, 0.42);
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: background 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-about .team-branch:hover,
.page-about .team-branch:focus-within {
  background: rgba(18, 61, 42, 0.85);
  border-left-color: var(--lime);
}

.page-about .team-count {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.page-about .team-branch h3 {
  margin: 0.5rem 0 0.55rem;
  color: var(--cream);
}

.page-about .team-branch p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: rgba(232, 226, 214, 0.74);
}

/* ---------- 流程 ---------- */
.page-about .about-process__head {
  max-width: 42rem;
}

.page-about .about-process__head h2 {
  margin: 0.6rem 0 1rem;
  color: var(--cream);
}

.page-about .about-process__intro {
  color: rgba(245, 247, 242, 0.82);
  max-width: 32em;
}

.page-about .steps {
  list-style: none;
  margin: 2.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-about .step {
  position: relative;
  padding: 1.3rem 1.2rem 1.35rem;
  background: rgba(9, 26, 19, 0.42);
  border: 1px solid rgba(198, 255, 61, 0.18);
  border-radius: var(--radius);
}

.page-about .step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.65rem;
}

.page-about .step h3 {
  margin: 0 0 0.5rem;
  color: var(--cream);
}

.page-about .step p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: rgba(232, 226, 214, 0.78);
}

/* ---------- 发展历程 ---------- */
.page-about .about-history__head {
  max-width: 42rem;
}

.page-about .about-history__head h2 {
  margin: 0.6rem 0 1rem;
  color: var(--cream);
}

.page-about .about-history__intro {
  color: rgba(232, 226, 214, 0.76);
  max-width: 34em;
}

.page-about .about-history__figure {
  margin: 2.2rem 0 2.6rem;
}

.page-about .about-history__figure figcaption {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--rock);
}

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0.9rem;
  bottom: 0.9rem;
  width: 1px;
  background: linear-gradient(to bottom, var(--lime), rgba(198, 255, 61, 0.06));
}

.page-about .timeline-item {
  position: relative;
  padding-left: 2.2rem;
  margin-bottom: 0.9rem;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 1.15rem;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 61, 0.12);
}

.page-about .timeline-node {
  border: 1px solid rgba(154, 167, 158, 0.22);
  border-radius: var(--radius);
  background: rgba(18, 61, 42, 0.35);
  transition: border-color 0.28s var(--ease), background 0.28s var(--ease);
}

.page-about .timeline-node[open] {
  border-color: rgba(198, 255, 61, 0.42);
  background: rgba(18, 61, 42, 0.62);
}

.page-about .timeline-node summary {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding: 0.95rem 1.05rem;
  cursor: pointer;
  list-style: none;
}

.page-about .timeline-node summary::-webkit-details-marker {
  display: none;
}

.page-about .timeline-node summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--lime);
}

.page-about .timeline-node[open] summary::after {
  content: "−";
}

.page-about .timeline-year {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.page-about .timeline-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--cream);
}

.page-about .timeline-node p {
  margin: 0;
  padding: 0 1.05rem 1.1rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(232, 226, 214, 0.76);
}

/* ---------- 合作生态 ---------- */
.page-about .eco-grid {
  display: grid;
  gap: 2.2rem;
}

.page-about .eco-main h2 {
  margin: 0.6rem 0 1rem;
  color: var(--charcoal);
}

.page-about .eco-main p {
  color: #45514a;
  max-width: 34em;
}

.page-about .eco-main .btn {
  margin-top: 1.4rem;
}

.page-about .eco-side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .eco-stat {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 1rem 1.1rem;
  background: #fffef9;
  border: 1px solid rgba(30, 36, 33, 0.1);
  border-radius: var(--radius);
}

.page-about .eco-stat-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1;
  color: var(--grass);
  font-variant-numeric: tabular-nums;
}

.page-about .eco-stat-label {
  font-size: 0.86rem;
  color: #4d5a53;
}

.page-about .eco-awards {
  padding: 1.1rem 1.2rem 1.25rem;
  background: var(--night);
  border-radius: var(--radius);
  color: var(--cream);
}

.page-about .eco-awards h3 {
  margin: 0 0 0.7rem;
  color: var(--lime);
}

.page-about .eco-awards ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.page-about .eco-awards li {
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(232, 226, 214, 0.82);
  padding-left: 1rem;
  position: relative;
}

.page-about .eco-awards li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  background: var(--orange);
  border-radius: 50%;
}

.page-about .eco-awards .num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

/* ---------- 品牌承诺与联系 ---------- */
.page-about .promise-grid {
  display: grid;
  gap: 2.2rem;
}

.page-about .promise-main h2 {
  margin: 0.6rem 0 1.4rem;
  color: var(--cream);
}

.page-about .promise-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.15rem;
}

.page-about .promise-list li {
  padding-left: 1rem;
  border-left: 1px solid rgba(198, 255, 61, 0.32);
}

.page-about .promise-list h3 {
  margin: 0 0 0.35rem;
  color: var(--cream);
}

.page-about .promise-list p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: rgba(232, 226, 214, 0.74);
}

.page-about .promise-contact {
  padding: 1.4rem 1.3rem 1.5rem;
  border: 1px solid rgba(154, 167, 158, 0.26);
  border-radius: var(--radius);
  background: rgba(18, 61, 42, 0.5);
  align-self: start;
}

.page-about .promise-contact h3 {
  margin: 0 0 1rem;
  color: var(--lime);
}

.page-about .promise-contact .contact-list {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .promise-contact .contact-row {
  display: grid;
  gap: 0.2rem;
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(232, 226, 214, 0.86);
  padding-bottom: 0.85rem;
  border-bottom: 1px solid rgba(154, 167, 158, 0.16);
}

.page-about .promise-contact .contact-row > span:first-child {
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--rock);
}

.page-about .promise-contact .contact-row a {
  color: var(--cream);
  text-decoration: none;
  word-break: break-all;
}

.page-about .promise-contact .contact-row a:hover,
.page-about .promise-contact .contact-row a:focus-visible {
  color: var(--lime);
  text-decoration: underline;
}

.page-about .promise-note {
  margin: 1rem 0 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(232, 226, 214, 0.62);
}

.page-about .promise-actions {
  margin-top: 1.3rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero {
    padding: calc(var(--header-h) + 3.5rem) 0 4.5rem;
  }

  .page-about .about-origin__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 3rem;
  }

  .page-about .about-culture__body {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: center;
    gap: 2.6rem;
  }

  .page-about .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-about .eco-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 3rem;
    align-items: start;
  }

  .page-about .promise-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 3rem;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.68fr);
    align-items: end;
    gap: 3rem;
  }

  .page-about .team-branches {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.35rem;
    padding-top: 2.1rem;
    position: relative;
  }

  .page-about .team-branches::before {
    content: "";
    position: absolute;
    top: 0;
    left: 6%;
    right: 6%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(198, 255, 61, 0.5), transparent);
  }

  .page-about .team-branch {
    padding: 1.3rem 1.25rem 1.4rem;
    border-left: 1px solid rgba(198, 255, 61, 0.26);
    border-radius: var(--radius);
  }

  .page-about .team-branch::before {
    content: "";
    position: absolute;
    top: -2.1rem;
    left: 50%;
    width: 1px;
    height: 2.1rem;
    background: rgba(198, 255, 61, 0.4);
  }

  .page-about .team-branch:hover,
  .page-about .team-branch:focus-within {
    border-color: rgba(198, 255, 61, 0.6);
    border-left-color: rgba(198, 255, 61, 0.6);
  }

  .page-about .timeline-item {
    padding-left: 2.6rem;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero h1 {
    font-size: clamp(3.6rem, 6vw, 5.4rem);
  }

  .page-about .quote-card {
    flex: 0 0 min(70%, 440px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-branch,
  .page-about .timeline-node {
    transition: none;
  }

  .page-about .quote-rail {
    scroll-behavior: auto;
  }
}
<<<END>>>