.page-about {
  --about-glow-magenta: rgba(192, 51, 140, .20);
  --about-glow-teal: rgba(47, 191, 155, .15);
  overflow-x: clip;
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: 28px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-block: clamp(28px, 5vw, 52px) clamp(30px, 5vw, 60px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -12% -22% auto -22%;
  height: 130%;
  background:
    radial-gradient(58% 70% at 10% 0%, var(--about-glow-magenta), transparent 70%),
    radial-gradient(52% 64% at 90% 14%, var(--about-glow-teal), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--gold);
}

.page-about .about-hero__eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold-line);
}

.page-about .about-hero h1 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5.2vw, 3.5rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: var(--ls-title);
  color: var(--paper);
  max-width: 20em;
}

.page-about .about-lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: var(--fs-18);
  line-height: var(--lh-body);
  color: var(--paper);
  opacity: .9;
}

.page-about .about-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  margin: 30px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--gold-hair);
}

.page-about .about-meta__item {
  min-width: 96px;
}

.page-about .about-meta__item dt {
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--muted);
}

.page-about .about-meta__item dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 600;
  color: var(--paper);
  letter-spacing: .02em;
}

.page-about .about-hero__media {
  align-self: start;
}

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

/* ---------- 锚点导航 ---------- */
.page-about .about-index {
  position: sticky;
  top: var(--header-h);
  z-index: 8;
  margin-top: 8px;
  padding: 10px 12px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
}

.page-about .about-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index__list a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: var(--fs-13);
  color: var(--muted);
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-about .about-index__list a:hover {
  color: var(--paper);
  border-color: var(--ink-700);
}

.page-about .about-index__list a[aria-current="true"] {
  color: var(--gold);
  border-color: var(--gold-line);
  background: rgba(232, 182, 90, .08);
}

.page-about .about-index__list a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* ---------- 主体区块 ---------- */
.page-about .about-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-block: clamp(36px, 6vw, 76px);
  border-top: 1px solid var(--ink-700);
}

.page-about .about-block__main {
  min-width: 0;
}

.page-about .about-block__side {
  min-width: 0;
}

.page-about .about-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: var(--ls-anno);
  color: var(--gold);
}

.page-about .about-title {
  margin: 12px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.6vw, var(--fs-36));
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: var(--ls-title);
  color: var(--paper);
}

.page-about .about-lead-note {
  margin: 0 0 24px;
  max-width: 34em;
  font-size: var(--fs-16);
  line-height: var(--lh-body);
  color: var(--muted);
}

.page-about .prose p {
  margin: 0 0 18px;
  color: var(--paper);
  opacity: .9;
}

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

.page-about .prose a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-line);
}

.page-about .prose a:hover {
  border-bottom-color: var(--gold);
}

.page-about .prose a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* ---------- 侧栏统计（纸白实色层） ---------- */
.page-about .about-stat {
  padding: 22px 20px;
  border-radius: var(--radius);
}

.page-about .about-stat__label {
  margin: 0 0 14px;
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: #5A6178;
}

.page-about .about-stat__list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .about-stat__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(11, 16, 38, .16);
}

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

.page-about .about-stat__row dt {
  font-size: var(--fs-13);
  color: #5A6178;
}

.page-about .about-stat__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  font-weight: 600;
  color: #0B1026;
}

/* ---------- 侧栏面板（暗色） ---------- */
.page-about .about-side__label {
  display: none;
  margin: 0 0 14px;
  color: var(--muted);
}

.page-about .about-side__panel {
  padding: 20px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-about .about-side__panel + .about-side__panel {
  margin-top: 16px;
}

.page-about .about-side__panel--accent {
  border-color: var(--gold-line);
  background: linear-gradient(160deg, rgba(232, 182, 90, .12), rgba(18, 26, 56, .9) 70%);
}

.page-about .about-side__title {
  margin: 0;
  font-size: var(--fs-13);
  letter-spacing: .12em;
  color: var(--muted);
}

.page-about .about-side__num {
  margin: 10px 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 600;
  color: var(--gold);
  letter-spacing: .01em;
}

.page-about .about-side__desc {
  margin: 0;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 时间线 ---------- */
.page-about .about-history__media {
  margin: 0 0 28px;
}

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

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 24px;
  bottom: 24px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), var(--gold-hair) 55%, transparent);
}

.page-about .about-node {
  position: relative;
}

.page-about .about-node__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 16px 0 16px 36px;
  cursor: pointer;
  list-style: none;
  border-bottom: 1px solid var(--gold-hair);
  transition: border-color .18s var(--ease);
}

.page-about .about-node__head::-webkit-details-marker {
  display: none;
}

.page-about .about-node__head::marker {
  content: "";
}

.page-about .about-node__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1px solid var(--gold-line);
  background: var(--ink-900);
  transition: background-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-about details[open] > .about-node__head::before {
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--gold-hair);
}

.page-about .about-node__head:hover::before {
  border-color: var(--gold);
}

.page-about .about-node__head:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.page-about .about-node__code {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--gold);
}

.page-about .about-node__title {
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--paper);
  letter-spacing: .02em;
}

.page-about .about-node__hint {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--muted);
}

.page-about .about-node__hint::after {
  content: "▾";
  display: inline-block;
  margin-left: 6px;
  transition: transform .22s var(--ease);
}

.page-about details[open] .about-node__hint {
  color: var(--gold);
}

.page-about details[open] .about-node__hint::after {
  transform: rotate(180deg);
}

.page-about .about-node__body {
  padding: 16px 0 20px 36px;
}

.page-about .about-node__body p {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-16);
  line-height: var(--lh-body);
  color: var(--paper);
  opacity: .85;
}

/* ---------- 服务清单 ---------- */
.page-about .about-services {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
}

.page-about .about-service {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 16px;
  padding: 22px 0;
  border-top: 1px solid var(--ink-700);
}

.page-about .about-service:last-child {
  border-bottom: 1px solid var(--ink-700);
}

.page-about .about-service__code {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--magenta-soft);
  letter-spacing: .1em;
  padding-top: 4px;
}

.page-about .about-service__body h3 {
  margin: 0 0 8px;
  font-size: var(--fs-22);
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-about .about-service__body p {
  margin: 0;
  max-width: 36em;
  font-size: var(--fs-16);
  line-height: var(--lh-body);
  color: var(--paper);
  opacity: .86;
}

.page-about .about-service__tag {
  grid-column: 2;
  justify-self: start;
  font-size: var(--fs-12);
  letter-spacing: .08em;
  padding: 4px 10px;
  border: 1px solid var(--teal);
  border-radius: var(--radius);
  color: var(--teal);
  white-space: nowrap;
}

/* ---------- 服务范围网格 ---------- */
.page-about .about-regions {
  padding: 20px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(47, 191, 155, .10), var(--ink-800) 70%);
}

.page-about .about-regions__label {
  margin: 0 0 16px;
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--muted);
}

.page-about .about-regions__grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-about .about-region {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-about .about-region:hover {
  border-color: var(--teal);
  background: rgba(47, 191, 155, .08);
}

.page-about .about-region__name {
  font-size: var(--fs-13);
  color: var(--paper);
}

.page-about .about-region__num {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--teal-soft);
}

.page-about .about-regions__note {
  margin: 16px 0 0;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 团队条块 ---------- */
.page-about .about-team__media {
  margin: 0 0 28px;
}

.page-about .about-team {
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .about-team__row {
  display: grid;
  grid-template-columns: 5.5em 1fr auto;
  align-items: center;
  gap: 12px;
}

.page-about .about-team__name {
  font-size: var(--fs-13);
  color: var(--paper);
  letter-spacing: .06em;
}

.page-about .about-team__bar {
  display: block;
  height: 8px;
  border-radius: 999px;
  background: var(--ink-700);
  overflow: hidden;
}

.page-about .about-team__bar i {
  display: block;
  height: 100%;
  width: var(--share, 50%);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--gold), var(--magenta));
}

.page-about .about-team__num {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  color: var(--gold-soft);
  white-space: nowrap;
}

/* ---------- 质量保障 ---------- */
.page-about .about-check {
  margin-top: 28px;
  display: grid;
  gap: 12px;
}

.page-about .about-check__item {
  padding: 18px;
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-about .about-check__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 600;
  color: var(--gold);
}

.page-about .about-check__desc {
  margin: 8px 0 0;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 年度盘点 ---------- */
.page-about .about-annual {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-annual__cell {
  padding: 18px 16px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(192, 51, 140, .12), var(--ink-800) 72%);
}

.page-about .about-annual__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 600;
  color: var(--magenta-soft);
}

.page-about .about-annual__text {
  margin: 8px 0 0;
  font-size: var(--fs-13);
  line-height: 1.65;
  color: var(--muted);
}

.page-about .about-topics {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-about .about-topics a {
  display: block;
  padding: 10px 12px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
  font-size: var(--fs-13);
  color: var(--paper);
  text-decoration: none;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-about .about-topics a:hover {
  border-color: var(--gold-line);
  color: var(--gold);
}

.page-about .about-topics a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* ---------- 结尾引导 ---------- */
.page-about .about-cta {
  padding-block: clamp(40px, 6vw, 72px) 0;
}

.page-about .about-cta__inner {
  padding: clamp(26px, 4vw, 44px);
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(232, 182, 90, .10), rgba(192, 51, 140, .10) 55%, rgba(11, 16, 38, .8));
}

.page-about .about-cta__title {
  margin: 14px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3.2vw, var(--fs-28));
  font-weight: 900;
  letter-spacing: var(--ls-title);
  color: var(--paper);
}

.page-about .about-cta__desc {
  margin: 0;
  max-width: 40em;
  font-size: var(--fs-16);
  line-height: var(--lh-body);
  color: var(--paper);
  opacity: .88;
}

.page-about .about-cta__desc a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-line);
}

.page-about .about-cta__desc a:hover {
  border-bottom-color: var(--gold);
}

.page-about .about-cta__actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 竖排旁注：窄屏默认隐藏 ---------- */
.page-about .v-note {
  display: none;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 700px) {
  .page-about .about-regions__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-service {
    grid-template-columns: auto 1fr auto;
    align-items: start;
    gap: 6px 20px;
  }

  .page-about .about-service__tag {
    grid-column: 3;
    justify-self: end;
  }
}

/* ---------- 桌面：双轨结构 ---------- */
@media (min-width: 981px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
    column-gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-block {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    column-gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-block__side {
    position: relative;
    padding-top: 34px;
  }

  .page-about .about-side__label.v-note {
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: var(--fs-12);
    letter-spacing: var(--ls-anno);
    color: var(--muted);
  }

  .page-about .about-time__side {
    position: sticky;
    top: calc(var(--header-h) + 72px);
  }

  .page-about .about-annual {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__list a,
  .page-about .about-node__head,
  .page-about .about-node__head::before,
  .page-about .about-node__hint::after,
  .page-about .about-region,
  .page-about .about-topics a {
    transition: none;
  }

  .page-about details[open] .about-node__hint::after {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>

.page-about {
  --share: 1rem;
}