.page-about {
  --about-muted: #45544b;
  --about-rail: 230px;
  --about-soft: rgba(111, 122, 100, 0.35);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4vw, 2.4rem) 0 clamp(2.25rem, 6vw, 3.75rem);
  border-bottom: 3px solid var(--ink);
  background:
    linear-gradient(115deg, var(--paper-2) 0 44%, rgba(239, 229, 210, 0) 44.4%),
    var(--paper);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(111, 122, 100, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(111, 122, 100, 0.16) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: linear-gradient(to bottom, #000 5%, transparent 88%);
  mask-image: linear-gradient(to bottom, #000 5%, transparent 88%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -34%;
  width: min(48vw, 520px);
  aspect-ratio: 1 / 1;
  background: rgba(201, 164, 92, 0.22);
  transform: rotate(18deg);
  pointer-events: none;
}

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

.page-about .about-hero-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(2rem, 5.4vw, 3.9rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0.6rem 0 1rem;
  max-width: 15em;
}

.page-about .about-hero-lede {
  max-width: 40em;
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.9;
  color: var(--about-muted);
  margin: 0;
}

.page-about .about-hero-facts {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 1.1rem 0 0;
  border-top: 2px solid var(--ink);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.9rem 1rem;
  max-width: 48rem;
}

.page-about .about-hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  border-left: 3px solid var(--gold);
  padding-left: 0.7rem;
}

.page-about .about-hero-facts b {
  font-family: var(--mono);
  font-size: clamp(1rem, 2vw, 1.28rem);
  color: var(--ink-green);
  letter-spacing: -0.01em;
}

.page-about .about-hero-facts span {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--about-muted);
}

/* ---------- 双栏骨架 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-top: clamp(1.75rem, 4vw, 3rem);
}

@media (min-width: 920px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }
}

/* ---------- 左侧索引 ---------- */
.page-about .about-rail {
  align-self: start;
}

@media (min-width: 920px) {
  .page-about .about-rail {
    position: sticky;
    top: 92px;
    border-left: 2px solid var(--gold);
    padding-left: 1rem;
  }
}

.page-about .rail-head {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--gold-deep);
  margin: 0 0 0.6rem;
}

.page-about .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.1rem;
}

@media (min-width: 920px) {
  .page-about .rail-list {
    grid-template-columns: minmax(0, 1fr);
  }
}

.page-about .rail-link {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.4rem;
  align-items: baseline;
  padding: 0.42rem 0.35rem;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.85rem;
  line-height: 1.4;
  border-bottom: 1px solid var(--about-soft);
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-about .rail-link i {
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.72rem;
  color: var(--gold-deep);
}

.page-about .rail-link:hover,
.page-about .rail-link:focus-visible {
  background: var(--highlight);
  outline: none;
}

.page-about .rail-link.is-current,
.page-about .rail-list li.is-current .rail-link {
  background: var(--highlight);
  color: var(--ink-green);
  border-bottom-color: var(--brick);
}

/* ---------- 章节 ---------- */
.page-about .about-section {
  padding: clamp(1.75rem, 4vw, 2.9rem) 0;
  border-top: 2px solid var(--ink);
  scroll-margin-top: 96px;
}

.page-about .about-section:first-of-type {
  border-top-width: 4px;
  padding-top: 0;
}

.page-about .about-head {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(0.6rem, 2vw, 1.3rem);
  align-items: start;
  margin-bottom: clamp(1rem, 2.5vw, 1.6rem);
}

@media (min-width: 1120px) {
  .page-about .about-head {
    padding-right: 2.6rem;
  }
}

.page-about .about-num {
  font-family: var(--mono);
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  line-height: 0.8;
  font-weight: 700;
  letter-spacing: -0.05em;
  color: var(--gold-deep);
}

.page-about .about-kicker {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--brick);
  margin-bottom: 0.4rem;
}

.page-about .about-title {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 3.2vw, 2.05rem);
  line-height: 1.32;
  font-weight: 700;
  margin: 0;
}

.page-about .about-rot {
  display: none;
}

@media (min-width: 1120px) {
  .page-about .about-rot {
    display: block;
    position: absolute;
    right: 0;
    top: 0.2rem;
    writing-mode: vertical-rl;
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.28em;
    color: var(--brick);
    opacity: 0.85;
  }
}

.page-about .about-lead {
  font-size: clamp(0.98rem, 1.5vw, 1.05rem);
  line-height: 1.9;
  color: var(--about-muted);
  max-width: 42em;
  margin: 0 0 clamp(1.1rem, 3vw, 1.6rem);
}

.page-about .about-text {
  font-size: clamp(0.96rem, 1.4vw, 1.03rem);
  line-height: 1.9;
  max-width: 40em;
}

.page-about .about-text p {
  margin: 0 0 1rem;
}

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

.page-about .about-text a,
.page-about .about-tail a {
  color: var(--brick);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid rgba(166, 75, 53, 0.4);
  transition: border-color 0.18s ease;
}

.page-about .about-text a:hover,
.page-about .about-text a:focus-visible,
.page-about .about-tail a:hover,
.page-about .about-tail a:focus-visible {
  border-bottom-color: var(--brick);
}

.page-about .about-link-row {
  margin-top: 1.1rem !important;
}

.page-about .about-tail {
  margin: clamp(1rem, 2.5vw, 1.5rem) 0 0;
  font-size: 0.95rem;
}

/* ---------- 图 ---------- */
.page-about .about-figure {
  margin: 0;
  border: 3px solid var(--ink);
  background: var(--paper-2);
  box-shadow: var(--shadow);
  overflow: hidden;
}

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

.page-about .about-figure figcaption {
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--about-muted);
  padding: 0.6rem 0.8rem;
  border-top: 2px solid var(--ink);
  background: var(--paper);
}

/* ---------- 使命双栏 ---------- */
.page-about .about-two {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2rem);
}

@media (min-width: 760px) {
  .page-about .about-two {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .tl-item {
  position: relative;
  padding-left: 1.85rem;
  padding-bottom: 1.6rem;
}

.page-about .tl-item:last-child {
  padding-bottom: 0;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0.22rem;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--gold);
  border: 2px solid var(--ink-green);
  transform: rotate(45deg);
}

.page-about .tl-item::after {
  content: "";
  position: absolute;
  left: 0.56rem;
  top: 1.35rem;
  bottom: 0;
  width: 2px;
  background: var(--about-soft);
}

.page-about .tl-item:last-child::after {
  display: none;
}

.page-about .tl-item.is-key::before {
  background: var(--brick);
  border-color: var(--brick);
}

.page-about .tl-year {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink-green);
  margin-bottom: 0.3rem;
}

.page-about .tl-item.is-key .tl-year {
  color: var(--brick);
}

.page-about .tl-item p {
  margin: 0;
  max-width: 36em;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--about-muted);
}

/* ---------- 团队清单 ---------- */
.page-about .team-list {
  list-style: none;
  margin: 0 0 clamp(1.1rem, 3vw, 1.6rem);
  padding: 0;
  border-top: 1px solid var(--rule);
}

.page-about .team-item {
  display: grid;
  grid-template-columns: minmax(4.6rem, max-content) minmax(0, 1fr) auto;
  gap: 0.35rem 0.9rem;
  align-items: baseline;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--about-soft);
}

.page-about .team-name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink-green);
}

.page-about .team-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--about-muted);
}

.page-about .team-count {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--brick);
  white-space: nowrap;
}

@media (max-width: 560px) {
  .page-about .team-item {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-about .team-desc {
    grid-column: 1 / -1;
  }
}

/* ---------- 审核流程 ---------- */
.page-about .review-steps {
  border: 3px solid var(--ink);
  background: var(--paper-2);
  box-shadow: var(--shadow);
  padding: clamp(1rem, 3vw, 1.75rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.2rem;
  margin-bottom: clamp(1.1rem, 3vw, 1.6rem);
}

@media (min-width: 760px) {
  .page-about .review-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.35rem;
  }
}

.page-about .review-step {
  border-top: 3px solid var(--gold);
  padding-top: 0.8rem;
}

.page-about .review-step b {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--brick);
  margin-bottom: 0.35rem;
}

.page-about .review-step h3 {
  font-family: var(--serif);
  font-size: 1.06rem;
  margin: 0 0 0.4rem;
  color: var(--ink);
}

.page-about .review-step p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--about-muted);
}

/* ---------- 合作生态 ---------- */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-bottom: clamp(1.1rem, 3vw, 1.6rem);
}

@media (min-width: 640px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .partner-card {
  border: 2px solid var(--ink);
  background: var(--paper);
  padding: 1rem 0.95rem 1.15rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.page-about .partner-card:hover,
.page-about .partner-card:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow);
  border-color: var(--gold-deep);
}

.page-about .partner-card strong {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.45rem, 4vw, 1.95rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink-green);
  margin-bottom: 0.55rem;
}

.page-about .partner-card h3 {
  font-family: var(--serif);
  font-size: 1rem;
  margin: 0 0 0.4rem;
  color: var(--ink);
}

.page-about .partner-card p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--about-muted);
}

.page-about .about-figure + .about-text,
.page-about .partner-grid + .about-text {
  margin-bottom: clamp(1.1rem, 3vw, 1.6rem);
}

/* ---------- 数据格 ---------- */
.page-about .stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 2px solid var(--ink);
  margin-bottom: clamp(1.1rem, 3vw, 1.6rem);
}

@media (min-width: 760px) {
  .page-about .stat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .stat-cell {
  background: var(--paper);
  padding: 0.9rem 0.8rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.page-about .stat-cell b {
  font-family: var(--mono);
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-green);
}

.page-about .stat-cell span {
  font-size: 0.76rem;
  line-height: 1.5;
  color: var(--about-muted);
}

/* ---------- 合作入口 ---------- */
.page-about .about-cta {
  border: 3px solid var(--ink);
  background: var(--ink-green);
  color: var(--paper);
  box-shadow: var(--shadow);
  padding: clamp(1.25rem, 4vw, 2.1rem);
  display: grid;
  gap: 1rem;
  justify-items: start;
}

.page-about .about-cta h2 {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 3vw, 1.85rem);
  line-height: 1.35;
  margin: 0;
  color: var(--paper);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 42em;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--paper-2);
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .partner-card,
  .page-about .rail-link,
  .page-about .about-text a,
  .page-about .about-tail a {
    transition: none;
  }

  .page-about .partner-card:hover,
  .page-about .partner-card:focus-within {
    transform: none;
  }
}
<<<END>>>