.page-about {
  --about-gutter: 24px;
  --about-offset: 96px;
  color: var(--ink);
}

.page-about .crumbs {
  padding-top: 28px;
  padding-bottom: 8px;
}

.page-about [id] {
  scroll-margin-top: 120px;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding-bottom: var(--about-offset);
}

.page-about .about-hero-inner {
  padding-top: 24px;
  padding-bottom: 40px;
}

.page-about .about-hero .eyebrow {
  margin-bottom: 20px;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.2vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 24px;
  max-width: 18ch;
  color: var(--ink);
}

.page-about .about-hero-lead {
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
  margin: 0 0 28px;
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero-meta .tag-chip {
  border-color: var(--line);
  color: var(--ink);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-about .about-hero-media {
  margin: 0;
  position: relative;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(115deg, rgba(34, 224, 255, 0.12), rgba(138, 92, 255, 0.06) 55%, transparent 80%),
    var(--deep);
  overflow: hidden;
}

.page-about .about-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.35;
  pointer-events: none;
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  opacity: 0.72;
  mix-blend-mode: screen;
}

/* ---------- 通用章节微调 ---------- */

.page-about .section {
  padding-block: var(--about-offset);
}

.page-about .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
  max-width: 24ch;
}

.page-about .section-title.serif {
  font-family: var(--font-serif);
  font-weight: 600;
}

.page-about .section-head {
  margin-bottom: 40px;
}

.page-about .section-head .eyebrow {
  margin-bottom: 16px;
}

.page-about .section-note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
  max-width: 54ch;
}

/* ---------- 起点 ---------- */

.page-about .about-origin-grid {
  display: grid;
  gap: 40px;
}

.page-about .about-origin-copy .prose p {
  margin: 0 0 20px;
}

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

.page-about .about-origin-aside {
  padding: 24px 20px;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.page-about .about-origin-aside::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 72px;
  background: var(--cyan);
}

.page-about .origin-aside-title {
  margin: 0 0 20px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .origin-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .origin-list li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 12px;
  align-items: start;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--line);
}

.page-about .origin-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .origin-idx {
  font-size: 12px;
  color: var(--orange);
  padding-top: 3px;
}

/* ---------- 版本时间轴 ---------- */

.page-about .about-versions {
  background:
    radial-gradient(120% 80% at 12% 0%, rgba(34, 224, 255, 0.07), transparent 60%),
    var(--deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-versions-grid {
  display: grid;
  gap: 32px;
}

.page-about .about-version-nav ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 6px;
}

.page-about .about-version-nav li {
  flex: 0 0 auto;
}

.page-about .about-version-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  font-size: 13px;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.page-about .about-version-nav a:hover,
.page-about .about-version-nav a:focus-visible {
  border-color: var(--cyan);
  color: var(--ink);
  background: rgba(34, 224, 255, 0.06);
}

.page-about .vn-idx {
  font-size: 12px;
  color: var(--orange);
}

.page-about .about-version-body {
  display: grid;
  gap: 20px;
}

.page-about .version-card {
  padding: 24px 20px;
  border: 1px solid var(--line);
  background: var(--panel);
  position: relative;
  transition: border-color var(--t-fast) var(--ease), transform var(--t-mid) var(--ease);
}

.page-about .version-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
}

.page-about .version-card::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 0;
  height: 2px;
  background: var(--cyan);
  transition: width var(--t-mid) var(--ease);
}

.page-about .version-card:hover::after {
  width: 100%;
}

.page-about .version-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.page-about .version-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-about .version-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-about .version-year {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.page-about .version-lead {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .version-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .version-points li {
  display: grid;
  gap: 4px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .vp-key {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  text-transform: uppercase;
}

/* ---------- 内容规模 ---------- */

.page-about .scale-row {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .scale-cell {
  background: var(--panel);
  padding: 28px 20px;
  position: relative;
}

.page-about .scale-cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 28px;
  width: 2px;
  height: 28px;
  background: var(--cyan);
}

.page-about .scale-cell .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 7vw, 48px);
  line-height: 1;
  margin: 0 0 12px;
  color: var(--ink);
}

.page-about .scale-cell .stat-num.is-orange {
  color: var(--orange);
}

.page-about .scale-cell .stat-label {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--ink);
}

.page-about .scale-cell .stat-sub {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .scale-footnote {
  margin: 28px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--purple);
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 62ch;
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  background: linear-gradient(180deg, transparent, rgba(14, 23, 48, 0.7) 30%, transparent);
}

.page-about .about-team-grid {
  display: grid;
  gap: 40px;
}

.page-about .about-team-copy .prose p {
  margin: 0 0 18px;
}

.page-about .team-flow {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 18px 16px;
  border: 1px solid var(--line);
  background: rgba(34, 224, 255, 0.03);
}

.page-about .flow-step {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink);
  white-space: nowrap;
}

.page-about .flow-idx {
  font-size: 11px;
  color: var(--orange);
}

.page-about .flow-arrow {
  width: 18px;
  height: 1px;
  background: var(--line);
  position: relative;
}

.page-about .flow-arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: -2px;
  width: 5px;
  height: 5px;
  border-top: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
  transform: rotate(45deg);
}

.page-about .about-team-media {
  margin: 0 0 24px;
  border: 1px solid var(--line);
  background: var(--deep);
  position: relative;
}

.page-about .about-team-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  opacity: 0.82;
}

.page-about .about-team-media .media-cap {
  padding: 12px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .team-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .team-roles li {
  background: var(--panel);
  padding: 16px 18px;
  display: grid;
  grid-template-columns: 48px 1fr;
  grid-template-rows: auto auto;
  column-gap: 14px;
  align-items: baseline;
  transition: background-color var(--t-fast) var(--ease);
}

.page-about .team-roles li:hover {
  background: rgba(34, 224, 255, 0.05);
}

.page-about .role-num {
  grid-row: span 2;
  font-size: 24px;
  line-height: 1;
  color: var(--cyan);
}

.page-about .role-name {
  font-size: 14px;
  color: var(--ink);
}

.page-about .role-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 合作生态 ---------- */

.page-about .partners-grid {
  display: grid;
  gap: 20px;
}

.page-about .partner-card {
  padding: 26px 22px;
  border: 1px solid var(--line);
  background: var(--panel);
  display: grid;
  gap: 14px;
  align-content: start;
  transition: border-color var(--t-fast) var(--ease);
}

.page-about .partner-card:hover {
  border-color: var(--purple);
}

.page-about .partner-card .card-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--ink);
}

.page-about .partner-card .card-body {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .partner-tag {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-about .partner-card--honor .partner-tag {
  color: var(--orange);
}

/* ---------- 服务地区 ---------- */

.page-about .about-region-grid {
  display: grid;
  gap: 40px;
}

.page-about .about-region-copy .prose p {
  margin: 0 0 18px;
}

.page-about .region-contact {
  margin: 28px 0 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .region-contact-row {
  background: var(--panel);
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 12px;
  padding: 12px 16px;
  font-size: 13.5px;
}

.page-about .region-contact-row dt {
  color: var(--muted);
}

.page-about .region-contact-row dd {
  margin: 0;
  color: var(--ink);
  word-break: break-word;
}

.page-about .region-contact-row dd a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast) var(--ease);
}

.page-about .region-contact-row dd a:hover,
.page-about .region-contact-row dd a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-about .region-links {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .region-links .btn-ghost {
  font-size: 13px;
}

.page-about .about-region-media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--deep);
}

.page-about .about-region-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  opacity: 0.78;
}

.page-about .about-region-media .media-cap {
  padding: 12px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

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

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

  .page-about .partners-grid .partner-card--honor {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-about .about-origin-grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: 56px;
  }

  .page-about .about-versions-grid {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .about-version-nav {
    position: sticky;
    top: 120px;
    align-self: start;
  }

  .page-about .about-version-nav ol {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
  }

  .page-about .about-version-nav li {
    flex: none;
  }

  .page-about .about-version-nav a {
    width: 100%;
    border: 0;
    background: var(--panel);
    padding: 14px 16px;
    justify-content: flex-start;
  }

  .page-about .about-version-nav a:hover,
  .page-about .about-version-nav a:focus-visible {
    background: rgba(34, 224, 255, 0.08);
  }

  .page-about .about-team-grid {
    grid-template-columns: 6fr 6fr;
    align-items: start;
    gap: 56px;
  }

  .page-about .about-region-grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: 56px;
  }

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

  .page-about .scale-cell {
    padding: 36px 28px;
  }

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

  .page-about .partners-grid .partner-card--honor {
    grid-column: auto;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero-inner {
    padding-top: 48px;
    padding-bottom: 56px;
  }

  .page-about .about-version-body {
    gap: 24px;
  }
}
<<<END>>>