.page-about {
  --about-gap: clamp(24px, 4vw, 44px);
  --about-line: 1px solid rgba(201, 191, 166, 0.85);
  background: var(--paper-100);
  color: var(--graphite-900);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(28px, 5vw, 56px)) 0 clamp(36px, 6vw, 74px);
  background:
    radial-gradient(120% 140% at 84% 0%, rgba(43, 230, 200, 0.18) 0%, rgba(43, 230, 200, 0) 58%),
    radial-gradient(90% 120% at 8% 100%, rgba(224, 168, 60, 0.14) 0%, rgba(224, 168, 60, 0) 60%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-700) 100%);
  color: var(--paper-100);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(201, 191, 166, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 191, 166, 0.14) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 76%);
}

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

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(22px, 4vw, 36px);
  font-size: 13px;
  color: var(--fog-500);
}

.page-about .breadcrumb a {
  color: var(--cyan-400);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  text-decoration: underline;
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
}

.page-about .kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-about h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 68px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--paper-100);
}

.page-about .about-lede {
  margin: 0 0 26px;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: rgba(243, 239, 228, 0.82);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(201, 191, 166, 0.3);
  border: 1px solid rgba(201, 191, 166, 0.3);
}

.page-about .about-hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: rgba(11, 31, 26, 0.78);
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 4.4vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber-500);
}

.page-about .stat-unit {
  font-size: 0.5em;
  margin-left: 2px;
}

.page-about .stat-cap {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(243, 239, 228, 0.7);
}

/* ---------- 主体分栏 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  padding: clamp(30px, 5vw, 64px) 0 clamp(48px, 8vw, 96px);
  align-items: start;
}

.page-about .about-rail {
  background: var(--ink-700);
  border-left: 4px solid var(--cyan-400);
  padding: 24px 20px;
  color: var(--paper-100);
}

.page-about .about-rail-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber-500);
}

.page-about .about-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: rail;
  display: grid;
  gap: 2px;
  border-left: 1px solid rgba(201, 191, 166, 0.35);
}

.page-about .about-rail-list li {
  counter-increment: rail;
}

.page-about .about-rail-list a {
  display: flex;
  gap: 10px;
  padding: 10px 12px;
  font-size: 14px;
  line-height: 1.45;
  color: rgba(243, 239, 228, 0.78);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: color 160ms var(--ease), background 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .about-rail-list a::before {
  content: counter(rail, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fog-500);
  padding-top: 3px;
}

.page-about .about-rail-list a:hover,
.page-about .about-rail-list a:focus-visible {
  color: var(--cyan-400);
  background: rgba(43, 230, 200, 0.08);
  border-left-color: var(--cyan-400);
}

.page-about .about-rail-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed rgba(201, 191, 166, 0.4);
}

.page-about .about-rail-note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(243, 239, 228, 0.62);
}

/* ---------- 区块通用 ---------- */
.page-about .about-content {
  min-width: 0;
}

.page-about .about-block {
  padding: clamp(28px, 5vw, 52px) 0;
  border-top: var(--about-line);
}

.page-about .about-content > .about-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-block-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .about-index {
  grid-row: 1 / -1;
  margin: 0;
  padding-top: 7px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--amber-500);
}

.page-about h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-about .about-block-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(20, 24, 28, 0.78);
}

.page-about h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink-900);
}

.page-about .about-tail {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--cyan-400);
  font-size: 15px;
  line-height: 1.75;
  color: rgba(20, 24, 28, 0.8);
}

.page-about .about-tail a {
  color: var(--ink-700);
  text-decoration: underline;
  text-decoration-color: var(--cyan-400);
  text-underline-offset: 3px;
}

.page-about .about-tail a:hover {
  color: var(--cyan-400);
}

/* ---------- 图 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(22px, 3vw, 34px);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--about-line);
  background: var(--paper-200);
}

.page-about .about-figure--wide img {
  aspect-ratio: 2 / 1;
}

/* ---------- 01 服务人群 ---------- */
.page-about .serve-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .serve-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px dashed rgba(201, 191, 166, 0.95);
}

.page-about .serve-item:first-child {
  border-top: 1px dashed rgba(201, 191, 166, 0.95);
}

.page-about .serve-no {
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fog-500);
}

.page-about .serve-item h3 {
  font-size: 17px;
}

.page-about .serve-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(20, 24, 28, 0.75);
}

/* ---------- 02 团队 ---------- */
.page-about .about-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.page-about .about-filter .filter-btn {
  font-family: var(--font-body);
  font-size: 14px;
  padding: 8px 16px;
  border: 1px solid var(--ink-700);
  background: transparent;
  color: var(--ink-700);
  cursor: pointer;
  transition: background 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .about-filter .filter-btn:hover {
  border-color: var(--cyan-400);
  color: var(--ink-900);
}

.page-about .about-filter .filter-btn[aria-pressed="true"] {
  background: var(--ink-700);
  border-color: var(--ink-700);
  color: var(--cyan-400);
}

.page-about .about-filter .filter-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fog-500);
  margin-left: auto;
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .team-card {
  background: var(--paper-200);
  border-top: 4px solid var(--cyan-400);
  padding: 22px 20px;
  min-width: 0;
}

.page-about .team-card:nth-child(2) {
  border-top-color: var(--amber-500);
}

.page-about .team-card:nth-child(3) {
  border-top-color: var(--red-500);
}

.page-about .team-card[hidden] {
  display: none;
}

.page-about .team-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 12px;
}

.page-about .team-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink-900);
}

.page-about .team-name {
  font-size: 14px;
  color: rgba(20, 24, 28, 0.7);
}

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

.page-about .team-duties li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(20, 24, 28, 0.78);
}

.page-about .team-duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--cyan-400);
}

.page-about .team-rhythm {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid rgba(11, 31, 26, 0.14);
  font-size: 13px;
  line-height: 1.65;
  color: var(--fog-500);
}

/* ---------- 03 数据 ---------- */
.page-about .about-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .about-table caption {
  text-align: left;
}

.page-about .about-table th,
.page-about .about-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(201, 191, 166, 0.8);
  vertical-align: top;
}

.page-about .about-table thead th {
  background: var(--ink-700);
  color: var(--paper-100);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.02em;
  border-bottom: 0;
}

.page-about .about-table tbody th {
  font-weight: 700;
  color: var(--ink-900);
  white-space: nowrap;
}

.page-about .about-table tbody tr:nth-child(even) {
  background: rgba(229, 222, 203, 0.6);
}

.page-about .about-callouts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-callout {
  padding: 20px 20px 18px;
  background: var(--paper-100);
  border: var(--about-line);
  border-left: 5px solid var(--amber-500);
}

.page-about .about-callout:last-child {
  border-left-color: var(--cyan-400);
}

.page-about .about-callout p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(20, 24, 28, 0.78);
}

/* ---------- 04 时间轴 ---------- */
.page-about .about-road {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-road-item {
  position: relative;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 18px;
  padding: 0 0 26px 18px;
  border-left: 2px solid var(--sand-300);
}

.page-about .about-road-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-road-item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--paper-100);
  border: 2px solid var(--ink-700);
}

.page-about .about-road-item:first-child::before {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-about .about-road-mark {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--amber-500);
}

.page-about .about-road-body h3 {
  margin-bottom: 6px;
  font-size: 17px;
}

.page-about .about-road-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(20, 24, 28, 0.75);
}

/* ---------- 05 湖南 ---------- */
.page-about .about-hunan {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

.page-about .about-hunan-text p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(20, 24, 28, 0.8);
}

.page-about .about-contact-list {
  list-style: none;
  margin: 0 0 8px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(201, 191, 166, 0.7);
  border: 1px solid rgba(201, 191, 166, 0.7);
}

.page-about .about-contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 13px 14px;
  background: var(--paper-100);
}

.page-about .about-contact-key {
  min-width: 72px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fog-500);
}

.page-about .about-contact-val {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink-900);
  word-break: break-word;
}

.page-about .copy-btn {
  font-family: var(--font-body);
  font-size: 12px;
  padding: 4px 12px;
  border: 1px solid var(--ink-700);
  background: transparent;
  color: var(--ink-700);
  cursor: pointer;
  transition: background 160ms var(--ease), color 160ms var(--ease);
}

.page-about .copy-btn:hover {
  background: var(--ink-700);
  color: var(--cyan-400);
}

.page-about .copy-status {
  font-size: 12px;
  color: var(--cyan-400);
}

.page-about .about-figure--tall {
  margin: 0;
}

/* ---------- 06 理由 ---------- */
.page-about .reason-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: reason;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-about .reason-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 20px 0;
  border-top: 1px solid rgba(201, 191, 166, 0.9);
}

.page-about .reason-item:first-child {
  border-top: 3px solid var(--ink-900);
}

.page-about .reason-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--red-500);
}

.page-about .reason-item h3 {
  margin: 0;
  font-size: 19px;
}

.page-about .reason-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(20, 24, 28, 0.78);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  margin-top: clamp(24px, 4vw, 44px);
  padding: clamp(26px, 4vw, 44px);
  background: var(--ink-900);
  color: var(--paper-100);
  border-top: 4px solid var(--cyan-400);
}

.page-about .about-cta h2 {
  color: var(--paper-100);
  margin-bottom: 12px;
}

.page-about .about-cta p {
  margin: 0 0 22px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(243, 239, 228, 0.78);
}

.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-about .about-callouts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .reason-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 36px);
  }

  .page-about .reason-item {
    padding: 22px 0;
  }

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

  .page-about .about-road-item {
    grid-template-columns: 92px minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-about .about-hunan {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-about .team-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .team-card {
    grid-column: span 3;
  }

  .page-about .team-card:first-child {
    grid-column: span 6;
  }

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

@media (min-width: 1180px) {
  .page-about .about-callouts {
    gap: 20px;
  }
}
<<<END>>>