.page-about {
  --prof-rule: 1px solid rgba(232, 242, 236, 0.16);
  --prof-muted: rgba(245, 255, 249, 0.7);
  --prof-faint: rgba(245, 255, 249, 0.5);
  --prof-panel: rgba(6, 31, 24, 0.6);
  background: var(--pitch);
  color: var(--chalk);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: clip;
}

.page-about .breadcrumbs {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏声明 ---------- */
.page-about .prof-intro {
  display: grid;
  gap: 28px;
  padding: clamp(24px, 5vw, 56px) 0 clamp(28px, 4vw, 52px);
  border-bottom: 3px solid var(--moss);
}

.page-about .prof-h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.6vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.page-about .prof-h1-key {
  display: inline-block;
  background: var(--lime);
  color: var(--pitch-dark);
  padding: 0 0.14em;
  transform: skewX(-4deg);
}

.page-about .prof-lede {
  margin: 18px 0 0;
  color: var(--prof-muted);
  max-width: 58ch;
  line-height: 1.85;
}

.page-about .prof-intro-action {
  margin: 24px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .prof-intro-stats {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--moss);
  border: 3px solid var(--moss);
}

.page-about .prof-intro-stat {
  background: var(--pitch-dark);
  padding: 14px 12px;
}

.page-about .prof-intro-stat dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--prof-faint);
  margin-bottom: 8px;
}

.page-about .prof-intro-stat dd {
  margin: 0;
  font-size: 0.82rem;
  color: var(--prof-muted);
}

.page-about .prof-intro-num {
  display: block;
  color: var(--lime);
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 2px;
}

/* ---------- 目录型两栏 ---------- */
.page-about .prof-layout {
  display: grid;
  gap: 0;
}

.page-about .prof-aside {
  padding: 20px 0 8px;
  border-bottom: var(--prof-rule);
}

.page-about .prof-index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--prof-faint);
}

.page-about .prof-index {
  list-style: none;
  margin: 0;
  padding: 0 0 12px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .prof-index li {
  flex: 0 0 auto;
}

.page-about .prof-index a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 2px solid transparent;
  border-left: 3px solid var(--moss);
  color: var(--prof-muted);
  font-size: 0.86rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-about .prof-index-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.page-about .prof-index a:hover,
.page-about .prof-index a:focus-visible {
  color: var(--chalk);
  border-left-color: var(--lime);
  background: rgba(198, 255, 0, 0.07);
}

/* ---------- 正文通用 ---------- */
.page-about .prof-section {
  padding: clamp(36px, 6vw, 72px) 0;
  border-bottom: var(--prof-rule);
  scroll-margin-top: 120px;
}

.page-about .prof-section--last {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .prof-sec-head {
  margin-bottom: 22px;
}

.page-about .prof-h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.4vw, 2.3rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.005em;
  max-width: 24ch;
}

.page-about .prof-h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--chalk);
}

.page-about .prof-sub {
  margin: 12px 0 0;
  color: var(--prof-faint);
  font-size: 0.92rem;
  line-height: 1.8;
  max-width: 56ch;
}

.page-about .prof-text {
  margin: 0 0 16px;
  color: var(--prof-muted);
  line-height: 1.9;
  max-width: 62ch;
}

.page-about .prof-text--tail {
  margin-top: 20px;
}

/* ---------- 图片 ---------- */
.page-about .prof-figure {
  margin: 26px 0 0;
}

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

.page-about .prof-figure figcaption {
  margin-top: 10px;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--prof-faint);
  max-width: 54ch;
}

/* ---------- 三条要点 ---------- */
.page-about .prof-points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--prof-rule);
}

.page-about .prof-points li {
  padding: 18px 0 18px 44px;
  border-bottom: var(--prof-rule);
  position: relative;
}

.page-about .prof-point-num {
  position: absolute;
  left: 0;
  top: 18px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--pitch-dark);
  background: var(--lime);
  padding: 2px 7px;
  line-height: 1.4;
}

.page-about .prof-points p {
  margin: 0;
  color: var(--prof-muted);
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ---------- 时间线 ---------- */
.page-about .prof-timeline-figure {
  margin: 0 0 30px;
}

.page-about .prof-timeline {
  list-style: none;
  margin: 0;
  padding: 4px 0 4px 24px;
  position: relative;
}

.page-about .prof-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  background: var(--moss);
}

.page-about .prof-year {
  position: relative;
  padding: 0 0 30px;
}

.page-about .prof-year:last-child {
  padding-bottom: 0;
}

.page-about .prof-year::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 10px;
  width: 15px;
  height: 15px;
  box-sizing: border-box;
  background: var(--pitch);
  border: 3px solid var(--moss);
}

.page-about .prof-year.is-key::before {
  background: var(--lime);
  border-color: var(--lime);
  animation: prof-pulse 2.8s ease-in-out infinite;
}

.page-about .prof-year-num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--mist);
  letter-spacing: 0.04em;
  display: block;
  line-height: 1.1;
}

.page-about .prof-year.is-key .prof-year-num {
  font-size: clamp(1.8rem, 4.4vw, 2.4rem);
  color: var(--lime);
}

.page-about .prof-year-title {
  margin: 4px 0 6px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--chalk);
}

.page-about .prof-year-desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--prof-faint);
  max-width: 56ch;
  transition: color 0.2s ease;
}

.page-about .prof-year:hover .prof-year-desc,
.page-about .prof-year:focus-within .prof-year-desc {
  color: var(--prof-muted);
}

/* ---------- 团队 ---------- */
.page-about .prof-team {
  display: grid;
  gap: 14px;
}

.page-about .prof-team-card {
  border: 3px solid var(--moss);
  background: var(--prof-panel);
  padding: 18px 16px;
  box-shadow: 6px 6px 0 var(--ink);
}

.page-about .prof-team-num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--prof-faint);
}

.page-about .prof-team-num .num {
  display: inline-block;
  font-size: clamp(1.9rem, 5vw, 2.4rem);
  font-weight: 700;
  color: var(--lime);
  line-height: 1;
  margin-right: 6px;
}

.page-about .prof-team-card p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--prof-muted);
}

/* ---------- 三级校验流程 ---------- */
.page-about .prof-flow-block {
  margin-top: 30px;
  border: 3px solid var(--moss);
  padding: 20px 16px;
  background: var(--pitch-dark);
  box-shadow: 8px 8px 0 var(--ink);
}

.page-about .prof-flow-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--lime);
  margin-bottom: 16px;
}

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

.page-about .prof-flow li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  padding-top: 16px;
  border-top: var(--prof-rule);
}

.page-about .prof-flow li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .prof-flow-num {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.3;
}

.page-about .prof-flow-h {
  margin: 0 0 6px;
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--chalk);
}

.page-about .prof-flow p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--prof-muted);
}

/* ---------- 服务覆盖数字 ---------- */
.page-about .prof-stats {
  margin: 0 0 24px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .prof-stat {
  border: 3px solid var(--moss);
  border-top: 3px solid var(--lime);
  background: var(--prof-panel);
  padding: 14px 12px;
}

.page-about .prof-stat dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--prof-faint);
  margin-bottom: 8px;
  line-height: 1.5;
}

.page-about .prof-stat dd {
  margin: 0;
  font-size: 0.78rem;
  color: var(--prof-muted);
}

.page-about .prof-stat-num {
  display: block;
  font-size: clamp(1.6rem, 4.6vw, 2.2rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--chalk);
  margin-bottom: 3px;
}

/* ---------- 信息安全 ---------- */
.page-about .prof-secure {
  display: grid;
  gap: 22px;
}

.page-about .prof-secure-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .prof-secure-list li {
  border: 2px solid var(--moss);
  border-left: 4px solid var(--cyan);
  background: rgba(6, 31, 24, 0.5);
  padding: 12px 14px;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--prof-muted);
}

.page-about .prof-secure-list .chip {
  margin-right: 8px;
}

/* ---------- 协作与认可 ---------- */
.page-about .prof-awards {
  margin-top: 20px;
}

.page-about .prof-award {
  border: 3px solid var(--moss);
  border-left: 4px solid var(--orange);
  padding: 18px 16px;
  box-shadow: 6px 6px 0 var(--ink);
}

.page-about .prof-award-year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--orange);
  line-height: 1;
}

.page-about .prof-award p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--prof-muted);
}

/* ---------- 出口 ---------- */
.page-about .prof-exits {
  display: grid;
  gap: 14px;
}

.page-about .prof-exit {
  display: block;
  position: relative;
  border: 3px solid var(--moss);
  background: var(--pitch-dark);
  padding: 20px 18px 18px;
  text-decoration: none;
  color: inherit;
  box-shadow: 6px 6px 0 var(--ink);
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.page-about .prof-exit:hover,
.page-about .prof-exit:focus-visible {
  border-color: var(--lime);
  transform: translate(-2px, -2px);
  box-shadow: 9px 9px 0 var(--ink);
}

.page-about .prof-exit-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--pitch-dark);
  background: var(--lime);
  padding: 2px 7px;
  margin-bottom: 12px;
}

.page-about .prof-exit p {
  margin: 0 0 14px;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--prof-muted);
}

.page-about .prof-exit-go {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-about .prof-exit:hover .prof-exit-go {
  color: var(--lime);
}

.page-about .prof-help-line {
  margin: 24px 0 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--prof-faint);
}

.page-about .prof-help-line a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 195, 0.4);
}

.page-about .prof-help-line a:hover,
.page-about .prof-help-line a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

@keyframes prof-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(198, 255, 0, 0.34); }
  50% { box-shadow: 0 0 0 6px rgba(198, 255, 0, 0); }
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-about .prof-intro {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    align-items: end;
    gap: 40px;
  }

  .page-about .prof-intro-stats {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .prof-intro-stat {
    padding: 12px 14px;
  }

  .page-about .prof-intro-num {
    display: inline-block;
    font-size: 1.5rem;
    margin-right: 6px;
  }

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

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

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

  .page-about .prof-secure {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .prof-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 0;
    gap: 0 20px;
  }

  .page-about .prof-points li {
    padding: 16px 0 0;
    border-bottom: 0;
    border-top: 3px solid var(--moss);
  }

  .page-about .prof-points li:first-child {
    border-top-color: var(--lime);
  }

  .page-about .prof-points p {
    padding-left: 0;
  }

  .page-about .prof-point-num {
    position: static;
    display: inline-block;
    margin-bottom: 10px;
  }
}

/* ---------- 桌面：左索引右长文 ---------- */
@media (min-width: 1000px) {
  .page-about .prof-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 0 56px;
    align-items: start;
  }

  .page-about .prof-aside {
    position: sticky;
    top: 96px;
    padding: 48px 0 0;
    border-bottom: 0;
    border-right: var(--prof-rule);
  }

  .page-about .prof-index-title {
    padding-right: 16px;
  }

  .page-about .prof-index {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0 16px 16px 0;
  }

  .page-about .prof-index a {
    white-space: normal;
    padding: 9px 10px;
  }

  .page-about .prof-section:first-child {
    padding-top: 48px;
  }

  .page-about .prof-body {
    border-left: 0;
  }
}

/* ---------- 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .prof-year.is-key::before {
    animation: none;
    box-shadow: 0 0 0 3px rgba(198, 255, 0, 0.16);
  }

  .page-about .prof-exit,
  .page-about .prof-year-desc,
  .page-about .prof-index a {
    transition: none;
  }

  .page-about .prof-exit:hover,
  .page-about .prof-exit:focus-visible {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>