.page-about {
  --about-gap: clamp(48px, 8vw, 96px);
  --about-radius: 0px;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: hidden;
}

.page-about .container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
}

.page-about .section {
  padding: clamp(36px, 6vw, 72px) 0;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-about .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-about .breadcrumb [aria-current="page"] {
  color: var(--muted);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 5vw, 56px) 0 clamp(20px, 4vw, 40px);
  background:
    radial-gradient(circle at 82% 12%, rgba(0, 229, 214, .12), transparent 46%),
    radial-gradient(circle at 8% 88%, rgba(123, 77, 255, .14), transparent 52%),
    var(--ink);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent 60%);
  opacity: .5;
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 14px;
}

.page-about .page-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.4vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 15em;
  color: var(--text);
}

.page-about .lede {
  margin: 22px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .lede--tight {
  font-size: 15px;
  color: var(--muted);
  max-width: 38em;
  margin-top: 14px;
}

/* ---------- 首屏数据条 ---------- */
.page-about .about-stats {
  list-style: none;
  margin: clamp(28px, 5vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-stats li {
  background: var(--panel);
  border: 3px solid var(--line);
  border-left: 6px solid var(--cyan);
  padding: 14px 16px 16px;
  box-shadow: var(--shadow-hard-sm);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-stats li:nth-child(2) {
  border-left-color: var(--purple);
}

.page-about .about-stats li:nth-child(3) {
  border-left-color: var(--orange);
}

.page-about .about-stats li:nth-child(4) {
  border-left-color: var(--lime);
}

.page-about .about-stats .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4.4vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--lime);
  letter-spacing: -0.01em;
}

.page-about .about-stats .stat-cap {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* ---------- 章节跳转 ---------- */
.page-about .about-jump {
  margin-top: clamp(24px, 4vw, 36px);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-jump a {
  display: inline-block;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--cyan);
  text-decoration: none;
  background: transparent;
  border: 2px solid var(--line);
  transition: border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}

.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible {
  border-color: var(--cyan);
  background: rgba(0, 229, 214, .1);
}

/* ---------- 通用小标题 ---------- */
.page-about .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--text);
  max-width: 18em;
}

.page-about .prose p {
  margin: 0 0 16px;
  max-width: 40em;
  color: var(--text);
}

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

/* ---------- 起源 ---------- */
.page-about .about-origin {
  position: relative;
  background:
    repeating-linear-gradient(115deg, rgba(35, 42, 58, .35) 0 1px, transparent 1px 46px),
    var(--ink-2);
}

.page-about .origin-head {
  margin-bottom: clamp(20px, 4vw, 32px);
}

.page-about .origin-figure {
  margin: 0 0 clamp(24px, 4vw, 36px);
}

.page-about .media-frame {
  display: block;
  border: 3px solid var(--line);
  box-shadow: var(--shadow-hard);
  position: relative;
  overflow: hidden;
  background: var(--panel);
}

.page-about .media-frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--cyan), var(--purple) 65%, transparent);
}

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

.page-about .origin-body p:first-child {
  font-size: 17px;
}

/* ---------- 斜切色带 ---------- */
.page-about .slash-band {
  margin: clamp(32px, 6vw, 64px) 0;
  padding: clamp(40px, 7vw, 72px) 0;
  background: linear-gradient(118deg, var(--purple) 0%, #2A1A6B 62%, var(--ink) 100%);
  clip-path: polygon(0 22px, 100% 0, 100% calc(100% - 22px), 0 100%);
}

.page-about .slash-band p {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 3.2vw, 30px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 28em;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  background: var(--ink);
}

.page-about .timeline {
  list-style: none;
  margin: clamp(28px, 5vw, 48px) 0 0;
  padding: 0;
}

.page-about .tl-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: clamp(18px, 3vw, 26px) 0;
  border-bottom: 3px solid var(--line);
  transition: background .25s var(--ease), border-color .25s var(--ease);
  outline: none;
}

.page-about .tl-item:first-child {
  border-top: 3px solid var(--line);
}

.page-about .tl-item:hover,
.page-about .tl-item:focus-visible {
  background: rgba(0, 229, 214, .05);
  border-bottom-color: var(--cyan);
}

.page-about .tl-item:focus-visible {
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.page-about .tl-year {
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 32px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-about .tl-item:hover .tl-year,
.page-about .tl-item:focus-visible .tl-year {
  color: var(--lime);
}

.page-about .tl-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.6vw, 23px);
  line-height: 1.3;
  margin: 0 0 10px;
  color: var(--text);
  letter-spacing: -0.01em;
}

.page-about .tl-body p {
  margin: 0 0 10px;
  max-width: 42em;
  color: var(--text);
  font-size: 15px;
}

.page-about .tl-detail {
  font-family: var(--font-mono);
  font-size: 13px !important;
  line-height: 1.7;
  color: var(--muted) !important;
  border-left: 3px solid var(--purple);
  padding-left: 12px;
}

/* ---------- 数据校对 ---------- */
.page-about .about-verify {
  background:
    radial-gradient(circle at 12% 0%, rgba(0, 229, 214, .08), transparent 48%),
    var(--ink-2);
  border-top: 3px solid var(--line);
  border-bottom: 3px solid var(--line);
}

.page-about .verify-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
}

.page-about .verify-text p {
  max-width: 40em;
  margin: 16px 0 0;
  color: var(--text);
}

.page-about .verify-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .verify-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 16px;
  background: var(--panel);
  border: 3px solid var(--line);
  border-left: 6px solid var(--orange);
}

.page-about .verify-key {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: .02em;
}

.page-about .verify-val {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-about .verify-note {
  margin-top: 22px !important;
  padding: 16px 18px;
  background: rgba(255, 106, 43, .1);
  border-left: 6px solid var(--orange);
  font-size: 14px;
  color: var(--text);
}

.page-about .verify-figure {
  align-self: start;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--ink);
}

.page-about .team-grid {
  margin-top: clamp(24px, 4vw, 40px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .team-card {
  background: var(--panel);
  border: 3px solid var(--line);
  box-shadow: var(--shadow-hard-sm);
  padding: 20px 20px 22px;
  position: relative;
  transition: transform .28s var(--ease), border-color .28s var(--ease);
}

.page-about .team-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 12px;
  height: 100%;
  background: var(--cyan);
}

.page-about .team-card:nth-child(2)::before {
  background: var(--purple);
}

.page-about .team-card:nth-child(3)::before {
  background: var(--orange);
}

.page-about .team-card:nth-child(4)::before {
  background: var(--lime);
}

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

.page-about .team-role {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  margin: 0 0 10px;
  color: var(--text);
  letter-spacing: -0.01em;
  padding-left: 14px;
}

.page-about .team-card p {
  margin: 0;
  padding-left: 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 行业位置 ---------- */
.page-about .about-industry {
  background: var(--ink-2);
  border-top: 3px solid var(--line);
}

.page-about .about-industry .media-frame {
  margin: clamp(24px, 4vw, 36px) 0;
}

.page-about .industry-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-about .industry-block {
  padding: clamp(18px, 3vw, 26px) 0;
  border-top: 2px solid var(--line);
}

.page-about .industry-block:last-child {
  border-bottom: 2px solid var(--line);
}

.page-about .industry-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  margin: 0 0 10px;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-about .industry-block p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  max-width: 40em;
}

.page-about .industry-mono {
  font-family: var(--font-mono);
  font-size: 12px !important;
  letter-spacing: .06em;
  color: var(--muted) !important;
  margin: 0 !important;
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  background: var(--ink);
}

.page-about .next-list {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .next-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  padding: 18px 18px 20px;
  background: var(--panel);
  border: 3px solid var(--line);
  border-radius: var(--about-radius);
}

.page-about .next-idx {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--purple);
}

.page-about .next-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  margin: 0 0 8px;
  color: var(--text);
  letter-spacing: -0.01em;
}

.page-about .next-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 收束 ---------- */
.page-about .about-closing {
  padding-bottom: clamp(32px, 6vw, 64px);
}

.page-about .closing-panel {
  background: var(--paper);
  color: var(--ink);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard);
  padding: clamp(24px, 4vw, 44px);
  position: relative;
}

.page-about .closing-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 8px;
  background: linear-gradient(90deg, var(--cyan), var(--purple) 50%, var(--orange));
}

.page-about .closing-line {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 3vw, 27px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  margin: 12px 0 0;
  color: var(--ink);
  max-width: 26em;
}

.page-about .closing-sign {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: #4A4234;
  margin: 16px 0 0;
}

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

.page-about .closing-actions .btn {
  display: inline-block;
  padding: 11px 20px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border: 3px solid var(--ink);
  transition: transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}

.page-about .closing-actions .btn--solid {
  background: var(--ink);
  color: var(--paper);
}

.page-about .closing-actions .btn--ghost {
  background: transparent;
  color: var(--ink);
}

.page-about .closing-actions .btn--warm {
  background: var(--orange);
  color: var(--ink);
}

.page-about .closing-actions .btn:hover,
.page-about .closing-actions .btn:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hard-sm);
}

.page-about .closing-actions .btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 焦点可见 ---------- */
.page-about a:focus-visible,
.page-about [tabindex]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ================= 平板及以上 ================= */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .industry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 48px);
  }

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

/* ================= 桌面 ================= */
@media (min-width: 960px) {
  .page-about .about-hero {
    padding-top: clamp(40px, 6vw, 72px);
  }

  .page-about .origin-figure {
    margin-bottom: clamp(32px, 4vw, 48px);
  }

  .page-about .timeline {
    position: relative;
    padding-left: 0;
  }

  .page-about .timeline::before {
    content: "";
    position: absolute;
    left: 132px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--cyan) 0%, var(--purple) 62%, transparent 100%);
    opacity: .55;
  }

  .page-about .tl-item {
    grid-template-columns: 132px minmax(0, 1fr);
    column-gap: 40px;
    align-items: start;
    padding-left: 0;
  }

  .page-about .tl-year {
    position: relative;
    font-size: 30px;
    padding-right: 20px;
    text-align: right;
  }

  .page-about .tl-year::after {
    content: "";
    position: absolute;
    right: -7px;
    top: 50%;
    width: 14px;
    height: 14px;
    margin-top: -7px;
    background: var(--ink);
    border: 3px solid var(--cyan);
    border-radius: 50%;
  }

  .page-about .tl-item:hover .tl-year::after,
  .page-about .tl-item:focus-visible .tl-year::after {
    border-color: var(--lime);
    background: var(--lime);
  }

  .page-about .tl-body {
    padding-bottom: 4px;
  }

  .page-about .verify-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

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

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

  .page-about .industry-block {
    border-top: 2px solid var(--line);
    border-bottom: 2px solid var(--line);
    padding: 24px 20px 26px;
    border-right: 2px solid var(--line);
  }

  .page-about .industry-block:first-child {
    padding-left: 0;
  }

  .page-about .industry-block:last-child {
    border-right: 0;
    padding-right: 0;
  }

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

  .page-about .next-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .closing-actions .btn,
  .page-about .tl-item {
    transition: none !important;
    transform: none !important;
  }
}
<<<END>>>