.page-about {
  --about-panel: rgba(22, 56, 95, 0.5);
  --about-hair: rgba(42, 82, 124, 0.42);
}

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

/* ============ 首屏 ============ */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 42px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 96% at 90% 0%, rgba(47, 165, 160, 0.10), transparent 58%),
    radial-gradient(96% 84% at 6% 100%, rgba(228, 176, 74, 0.09), transparent 60%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(112deg, rgba(42, 82, 124, 0.30) 0 1px, transparent 1px 74px),
    repeating-linear-gradient(22deg, rgba(42, 82, 124, 0.14) 0 1px, transparent 1px 104px);
}

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

.page-about .about-hero .breadcrumb {
  margin: 0 0 26px;
  font-size: 13px;
}

.page-about .about-hero .eyebrow {
  margin: 0 0 16px;
}

.page-about .about-hero h1 {
  margin: 0;
  max-width: 15ch;
  font-family: var(--font-display);
  font-size: clamp(32px, 6.6vw, 76px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-about .about-lede {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-stats {
  list-style: none;
  margin: 34px 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stats li {
  background: var(--ink);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stat-num {
  font-size: clamp(19px, 3vw, 27px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--gold);
}

.page-about .about-stat-label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ============ 通用章节 ============ */
.page-about .about-section {
  padding: 46px 0;
}

.page-about .about-section .section-head {
  margin-bottom: 26px;
}

.page-about .about-section h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 36px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-about .about-sub {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ============ 业务范围 ============ */
.page-about .about-scope-grid {
  align-items: start;
}

.page-about .about-scope-aside {
  margin-top: 26px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--about-panel);
}

.page-about .about-scope-aside h3 {
  margin: 0 0 14px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 600;
}

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

.page-about .scope-links li + li {
  margin-top: 1px;
}

.page-about .scope-links a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 12px 12px 14px;
  border-left: 2px solid transparent;
  text-decoration: none;
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-about .scope-links a:hover,
.page-about .scope-links a:focus-visible {
  border-left-color: var(--gold);
  background: rgba(228, 176, 74, 0.07);
}

.page-about .scope-link-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.page-about .scope-link-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ============ 发展历程 ============ */
.page-about .about-timeline-layout {
  display: grid;
  gap: 26px;
}

.page-about .tl-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 34px;
}

.page-about .tl-list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--line) 7%, var(--line) 93%, transparent);
}

.page-about .tl-item {
  position: relative;
  margin: 0 0 14px;
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 22px;
  width: 9px;
  height: 9px;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(228, 176, 74, 0.14);
}

.page-about .tl-node {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--about-panel);
  transition: border-color 200ms var(--ease);
}

.page-about .tl-node:hover,
.page-about .tl-node[open] {
  border-color: var(--gold-dim);
}

.page-about .tl-node summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .tl-node summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}

.page-about .tl-year {
  flex: none;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--gold);
}

.page-about .tl-head {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.page-about .tl-body {
  padding: 0 16px 17px;
  border-top: 1px solid var(--about-hair);
  margin-top: 0;
  padding-top: 14px;
}

.page-about .tl-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-index {
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(15, 40, 70, 0.72);
}

.page-about .about-index h3 {
  margin: 0 0 14px;
  font-size: 14px;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--muted);
}

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

.page-about .about-index li + li {
  margin-top: 1px;
}

.page-about .about-index a {
  display: block;
  padding: 9px 10px;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  color: var(--gold);
  border-left-color: var(--gold);
  background: rgba(228, 176, 74, 0.07);
}

/* ============ 图片容器 ============ */
.page-about .about-media {
  margin: 30px 0 0;
}

.page-about .about-media .media-frame {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-about .about-media--region {
  margin-top: 26px;
}

.page-about .about-media--region .media-frame {
  aspect-ratio: 4 / 3;
}

.page-about .about-media--timeline {
  margin-top: 34px;
}

.page-about .about-media--timeline .media-frame {
  aspect-ratio: 7 / 4;
}

.page-about .about-media--tier {
  margin-top: 30px;
}

.page-about .about-media--tier .media-frame {
  aspect-ratio: 3 / 2;
}

.page-about .about-media .media-caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ============ 服务区域 ============ */
.page-about .about-region {
  background: linear-gradient(180deg, rgba(15, 40, 70, 0.55), transparent 78%);
}

.page-about .about-region-grid {
  align-items: start;
}

/* ============ 权益分层 ============ */
.page-about .tier-grid {
  display: grid;
  gap: 16px;
}

.page-about .tier-card {
  position: relative;
  padding: 24px 20px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(22, 56, 95, 0.55), rgba(10, 27, 51, 0.30));
  overflow: hidden;
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-about .tier-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(228, 176, 74, 0) 74%);
  opacity: 0.45;
  transition: opacity 220ms var(--ease);
}

.page-about .tier-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-2px);
}

.page-about .tier-card:hover::before {
  opacity: 1;
}

.page-about .tier-code {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .tier-card h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .tier-for {
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--about-hair);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

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

.page-about .tier-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-about .tier-list li + li {
  margin-top: 10px;
}

.page-about .tier-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 5px;
  height: 5px;
  background: var(--jade);
}

/* ============ 收藏页面价格区别（浅色区块） ============ */
.page-about .about-favorites {
  background: var(--paper);
  color: var(--ink);
}

.page-about .about-favorites .eyebrow {
  color: var(--steel);
}

.page-about .about-favorites h2 {
  color: var(--ink);
}

.page-about .about-fav-prose p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

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

.page-about .about-table-wrap {
  margin-top: 28px;
  overflow-x: auto;
  border: 1px solid rgba(22, 56, 95, 0.22);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.6);
}

.page-about .about-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-about .about-table caption {
  caption-side: top;
  text-align: left;
  padding: 14px 16px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--steel);
  border-bottom: 1px solid rgba(22, 56, 95, 0.18);
}

.page-about .about-table th {
  background: var(--steel);
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
  text-align: left;
  padding: 12px 16px;
  white-space: nowrap;
}

.page-about .about-table td {
  padding: 15px 16px;
  vertical-align: top;
  line-height: 1.7;
  color: var(--ink);
  border-bottom: 1px solid rgba(22, 56, 95, 0.14);
}

.page-about .about-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .about-table tbody tr:nth-child(even) {
  background: rgba(10, 27, 51, 0.035);
}

/* ============ 团队 ============ */
.page-about .about-team {
  background: linear-gradient(180deg, transparent, rgba(15, 40, 70, 0.5));
}

.page-about .team-grid {
  display: grid;
  gap: 1px;
  padding: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .team-item {
  background: var(--deep);
  padding: 22px 20px 24px;
}

.page-about .team-code {
  display: block;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .team-item h3 {
  margin: 10px 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.page-about .team-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ============ 合作与备案 ============ */
.page-about .about-compliance-grid {
  align-items: start;
}

.page-about .about-compliance .prose h2 {
  margin-top: 0;
}

.page-about .about-compliance .about-actions {
  margin-top: 24px;
}

.page-about .about-facts {
  margin-top: 26px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--about-panel);
}

.page-about .about-facts dl {
  margin: 0;
}

.page-about .fact-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--about-hair);
}

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

.page-about .fact-row:first-child {
  padding-top: 0;
}

.page-about .fact-row dt {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
  flex: none;
}

.page-about .fact-row dd {
  margin: 0;
  font-size: 14px;
  color: var(--gold);
  text-align: right;
  word-break: break-all;
}

/* ============ 行动区 ============ */
.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta {
  padding: 48px 0 56px;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(86% 120% at 92% 12%, rgba(228, 176, 74, 0.10), transparent 62%),
    var(--deep);
}

.page-about .about-cta-inner h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-about .about-cta-inner p {
  margin: 14px 0 24px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 56px 0 60px;
  }

  .page-about .about-section {
    padding: 72px 0;
  }

  .page-about .about-section .section-head {
    margin-bottom: 36px;
  }

  .page-about .about-timeline-layout {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--head-h) + 24px);
  }

  .page-about .about-scope-aside,
  .page-about .about-facts {
    margin-top: 0;
  }

  .page-about .about-media--region {
    margin-top: 0;
  }

  .page-about .tl-year {
    font-size: 28px;
  }

  .page-about .about-cta {
    padding: 68px 0 76px;
  }

  .page-about .about-cta-inner {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 40px;
    align-items: center;
  }

  .page-about .about-cta-inner p {
    margin-bottom: 0;
  }

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

@media (min-width: 1000px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .tier-card {
    padding: 28px 24px 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tier-card,
  .page-about .tl-node,
  .page-about .about-index a,
  .page-about .scope-links a {
    transition-property: opacity, border-color, background-color, color;
  }

  .page-about .tier-card:hover {
    transform: none;
  }
}
<<<END>>>