.page-about {
  background: var(--rice);
}

/* ---------- 面包屑与首屏 ---------- */
.page-about .about-crumb {
  margin-bottom: clamp(20px, 3vw, 34px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--slate);
}
.page-about .about-crumb a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

.page-about .about-hero {
  position: relative;
  padding-top: calc(var(--mast-h) + clamp(24px, 5vw, 56px));
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red) 0%, var(--gold) 52%, rgba(199, 154, 63, 0) 100%);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}
.page-about .about-hero-meta {
  letter-spacing: .14em;
  color: var(--gold);
}
.page-about .about-hero-title {
  margin: 14px 0 0;
  font-size: clamp(2.4rem, 7.6vw, 5.2rem);
  line-height: 1.06;
  letter-spacing: .01em;
  color: var(--ink);
}
.page-about .about-hero-lede {
  margin-top: clamp(18px, 2.5vw, 28px);
  max-width: 60ch;
  font-size: clamp(1rem, 1.1vw, 1.1rem);
  line-height: 1.85;
  color: #3A3430;
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-hero-facts {
  background: var(--moon);
  border-radius: var(--radius-lg);
  border-top: 3px solid var(--red);
  padding: clamp(22px, 3vw, 32px);
  box-shadow: 0 20px 46px -38px rgba(30, 26, 23, .65);
}
.page-about .about-facts-label {
  letter-spacing: .16em;
  color: var(--slate);
  margin-bottom: 16px;
}
.page-about .fact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .fact-item {
  display: grid;
  grid-template-columns: minmax(62px, auto) minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line-soft);
}
.page-about .fact-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-about .fact-num {
  font-family: var(--font-mono);
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--red);
  letter-spacing: .02em;
}
.page-about .fact-text {
  font-size: .93rem;
  line-height: 1.65;
  color: var(--slate);
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }
}

/* ---------- 区块头 ---------- */
.page-about .about-head {
  display: grid;
  gap: 16px;
  margin-bottom: clamp(28px, 4vw, 48px);
}
.page-about .about-plate .plate-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.page-about .about-plate .plate-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
  font-weight: 600;
}
.page-about .about-plate .plate-path {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--stone);
}
.page-about .about-head .plate-note {
  font-size: .96rem;
  line-height: 1.75;
  color: var(--slate);
  max-width: 46ch;
}
@media (min-width: 860px) {
  .page-about .about-head {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: end;
  }
  .page-about .about-head .plate-note {
    justify-self: end;
    text-align: right;
  }
}

/* ---------- 图像 ---------- */
.page-about .about-media {
  margin: 0 0 clamp(28px, 4vw, 46px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--moon);
}
.page-about .about-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-media .media-caption {
  padding: 12px 18px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0 0 0 6px;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 6px;
}
.page-about .tl-item {
  position: relative;
}
.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 28px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(199, 154, 63, .18);
}
.page-about .tl-stage {
  border-radius: var(--radius-md);
  transition: background .18s ease;
}
.page-about .tl-stage[open] {
  background: rgba(250, 245, 236, .75);
}
.page-about .tl-summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 26px;
  gap: 6px 14px;
  align-items: center;
  padding: 16px 16px 16px 14px;
  border-radius: var(--radius-md);
}
.page-about .tl-summary::-webkit-details-marker {
  display: none;
}
.page-about .tl-summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.page-about .tl-year {
  grid-column: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--red);
  border: 1px solid rgba(163, 43, 39, .35);
  border-radius: 999px;
  padding: 3px 12px;
  justify-self: start;
}
.page-about .tl-heading {
  grid-column: 1;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}
.page-about .tl-mark {
  grid-column: 2;
  grid-row: 1 / span 2;
  position: relative;
  width: 20px;
  height: 20px;
  justify-self: end;
  align-self: start;
  margin-top: 4px;
  border-radius: 50%;
  background: rgba(199, 154, 63, .16);
}
.page-about .tl-mark::before,
.page-about .tl-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--red);
  transform: translate(-50%, -50%);
  transition: transform .2s ease, opacity .2s ease;
}
.page-about .tl-mark::before {
  width: 9px;
  height: 1.5px;
}
.page-about .tl-mark::after {
  width: 1.5px;
  height: 9px;
}
.page-about .tl-stage[open] .tl-mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}
.page-about .tl-body {
  padding: 0 20px 20px 14px;
}
.page-about .tl-body p {
  margin: 0;
  max-width: 68ch;
  font-size: .97rem;
  line-height: 1.85;
  color: #423B36;
}
@media (min-width: 820px) {
  .page-about .tl-summary {
    grid-template-columns: 86px minmax(0, 1fr) 26px;
    align-items: center;
    padding: 18px 18px 18px 16px;
  }
  .page-about .tl-year {
    grid-row: 1;
    justify-self: start;
  }
  .page-about .tl-heading {
    grid-column: 2;
    grid-row: 1;
  }
  .page-about .tl-mark {
    grid-column: 3;
    grid-row: 1;
    align-self: center;
    margin-top: 0;
  }
  .page-about .tl-body {
    padding: 0 22px 22px 118px;
  }
}

/* ---------- 服务网络 ---------- */
.page-about .about-network-media {
  background: var(--moon);
}
.page-about .network-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-about .network-node {
  background: var(--moon);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 2.6vw, 28px);
  border-left: 3px solid rgba(199, 154, 63, .55);
  transition: transform .2s ease, box-shadow .2s ease;
}
.page-about .network-node:hover,
.page-about .network-node:focus-within {
  transform: translateY(-3px);
  box-shadow: 0 22px 40px -34px rgba(30, 26, 23, .6);
}
.page-about .network-node--hub {
  background: var(--red);
  border-left-color: var(--gold-light);
}
.page-about .network-node--hub .node-num {
  color: var(--gold-light);
}
.page-about .network-node--hub .node-city {
  color: var(--rice);
}
.page-about .network-node--hub .node-role {
  color: rgba(250, 245, 236, .86);
}
.page-about .node-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
  margin-bottom: 8px;
}
.page-about .node-city {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 700;
  color: var(--ink);
}
.page-about .node-role {
  margin: 0;
  font-size: .94rem;
  line-height: 1.78;
  color: var(--slate);
}
.page-about .network-note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: .86rem;
  line-height: 1.7;
  color: var(--stone);
}
@media (min-width: 720px) {
  .page-about .network-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
  .page-about .network-node--hub {
    grid-column: span 2;
  }
}

/* ---------- 顾问团队 ---------- */
.page-about .about-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(26px, 3.5vw, 40px);
}
.page-about .role-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 26px);
}
.page-about .role-item {
  padding: 20px 0 22px;
  border-top: 2px solid var(--ink);
}
.page-about .role-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}
.page-about .role-title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
}
.page-about .role-text {
  margin: 0;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--slate);
}
@media (min-width: 780px) {
  .page-about .role-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px clamp(26px, 3.4vw, 46px);
  }
}

/* ---------- 资质与合规 ---------- */
.page-about .about-qualify {
  color: rgba(250, 245, 236, .84);
}
.page-about .about-ink-title {
  color: var(--rice);
}
.page-about .about-qualify .plate-num {
  color: var(--gold-light);
}
.page-about .about-qualify .plate-path {
  color: rgba(250, 245, 236, .5);
}
.page-about .about-note-ink {
  color: rgba(250, 245, 236, .72);
}
.page-about .about-qualify-media {
  background: rgba(250, 245, 236, .06);
}
.page-about .about-qualify-media .media-caption {
  color: rgba(250, 245, 236, .62);
}
.page-about .qualify-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
}
.page-about .qualify-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-about .q-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid rgba(250, 245, 236, .18);
}
.page-about .q-item:last-child {
  border-bottom: 1px solid rgba(250, 245, 236, .18);
}
.page-about .q-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
  padding-top: 4px;
}
.page-about .q-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--rice);
}
.page-about .q-text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: rgba(250, 245, 236, .76);
}
@media (min-width: 900px) {
  .page-about .qualify-layout {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }
  .page-about .about-qualify-media {
    margin-bottom: 0;
    position: sticky;
    top: calc(var(--mast-h) + 24px);
  }
}

/* ---------- 合作生态 ---------- */
.page-about .partner-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}
.page-about .partner-text {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: #3A3430;
}
.page-about .partner-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: clamp(20px, 3vw, 28px);
}
.page-about .partner-stat {
  background: var(--red);
  color: var(--rice);
  border-radius: var(--radius-md);
  padding: 20px 18px;
}
.page-about .partner-stat--gold {
  background: var(--gold);
  color: var(--ink);
}
.page-about .partner-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 600;
  line-height: 1.1;
}
.page-about .partner-stat-label {
  display: block;
  margin-top: 6px;
  font-size: .85rem;
  letter-spacing: .04em;
  opacity: .92;
}
.page-about .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-about .step-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.page-about .step-item:first-child {
  border-top: 1px solid var(--line);
}
.page-about .step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--red);
  padding-top: 4px;
}
.page-about .step-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--ink);
}
.page-about .step-text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.78;
  color: var(--slate);
}
@media (min-width: 900px) {
  .page-about .partner-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

/* ---------- 适配清单 ---------- */
.page-about .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.page-about .check-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 6px 14px;
  padding: 18px 12px;
  border-bottom: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: background .18s ease, padding-left .18s ease;
}
.page-about .check-item:hover,
.page-about .check-item:focus-within {
  background: rgba(232, 206, 142, .22);
  padding-left: 18px;
}
.page-about .check-num {
  grid-column: 1;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
  padding-top: 4px;
}
.page-about .check-body {
  grid-column: 2;
}
.page-about .check-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--ink);
}
.page-about .check-text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.78;
  color: var(--slate);
}
.page-about .check-path {
  grid-column: 2;
  grid-row: 2;
  align-self: end;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate);
  opacity: .55;
  white-space: nowrap;
  transition: opacity .18s ease, color .18s ease;
}
.page-about .check-item:hover .check-path,
.page-about .check-item:focus-within .check-path {
  opacity: 1;
  color: var(--red);
}
.page-about .checklist-foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--stone);
  max-width: 62ch;
}
@media (min-width: 820px) {
  .page-about .check-item {
    grid-template-columns: 48px minmax(0, 1fr) auto;
    gap: 6px 22px;
    align-items: center;
    padding: 20px 14px;
  }
  .page-about .check-num {
    grid-row: 1;
  }
  .page-about .check-path {
    grid-column: 3;
    grid-row: 1;
    align-self: center;
  }
}

/* ---------- 结尾邀约 ---------- */
.page-about .about-cta {
  padding-bottom: clamp(56px, 8vw, 104px);
}
.page-about .about-cta-inner {
  max-width: 72ch;
}
.page-about .about-cta-meta {
  letter-spacing: .16em;
  color: var(--gold);
}
.page-about .about-cta-title {
  margin: 12px 0 0;
  color: var(--rice);
}
.page-about .about-cta-text {
  margin: clamp(14px, 2vw, 20px) 0 0;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(250, 245, 236, .78);
}
.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}
.page-about .about-btn-ghost-ink {
  border-color: rgba(250, 245, 236, .45);
  color: var(--rice);
}
.page-about .about-btn-ghost-ink:hover,
.page-about .about-btn-ghost-ink:focus-visible {
  border-color: var(--gold-light);
  color: var(--gold-light);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .network-node,
  .page-about .check-item,
  .page-about .tl-stage,
  .page-about .check-path {
    transition: none;
  }
  .page-about .network-node:hover,
  .page-about .network-node:focus-within {
    transform: none;
  }
}