.page-about {
  --about-line: #2A2350;
  --about-dot: #E8FF4D;
  padding-block: clamp(18px, 4vw, 36px) clamp(56px, 8vw, 110px);
  font-family: var(--font-body);
  color: var(--text);
}

.page-about .about-shell {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
}

/* 面包屑 */
.page-about .breadcrumbs {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .breadcrumb-link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

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

.page-about .breadcrumb-current {
  color: var(--text);
}

/* 首屏 */
.page-about .about-hero {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding-bottom: clamp(20px, 4vw, 44px);
}

.page-about .about-eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--blue);
}

.page-about .about-title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  text-shadow: 0 0 26px rgba(122, 59, 255, 0.45);
}

.page-about .about-lede {
  max-width: 34em;
  margin: 0;
  font-size: clamp(16px, 1.7vw, 18px);
  line-height: 1.78;
  color: var(--text);
}

.page-about .hero-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--about-line);
}

.page-about .hero-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
}

.page-about .hero-fact .data-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1;
  color: var(--lemon);
  letter-spacing: 0.01em;
}

.page-about .hero-fact-label {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.page-about .about-hero-side {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--about-line);
}

.page-about .side-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--pink);
}

.page-about .side-text {
  margin: 0;
  max-width: 24em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 时间轴骨架 */
.page-about .about-timeline {
  position: relative;
  margin-top: clamp(16px, 3vw, 28px);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(122, 59, 255, 0.6), rgba(46, 139, 255, 0.32) 55%, rgba(42, 35, 80, 0.9));
}

.page-about .chapter {
  position: relative;
  padding-left: 30px;
  padding-block: clamp(32px, 5vw, 58px);
  border-top: 1px solid rgba(42, 35, 80, 0.9);
}

.page-about .chapter:first-child {
  border-top: 0;
}

.page-about .chapter::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(clamp(32px, 5vw, 58px) + 14px);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(232, 255, 77, 0.35);
  transition: background 0.5s var(--ease), box-shadow 0.5s var(--ease);
}

.page-about .chapter.is-visible::before {
  background: var(--about-dot);
  box-shadow: 0 0 16px rgba(232, 255, 77, 0.8);
}

/* 章节标题 */
.page-about .chapter-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 14px;
  align-items: baseline;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .chapter-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--blue);
}

.page-about .chapter-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.6vw, 2.15rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-about .chapter-note {
  grid-column: 1 / -1;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--muted);
  transition: color 0.3s var(--ease);
}

.page-about .chapter-head:hover .chapter-note {
  color: var(--pink);
}

.page-about .chapter-body {
  max-width: 66ch;
}

.page-about .chapter-body--full {
  max-width: none;
}

.page-about .chapter--tight .chapter-body {
  max-width: 56ch;
}

.page-about .chapter-intro {
  margin: 0 0 clamp(18px, 3vw, 26px);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* 每日动作 */
.page-about .duty-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .duty {
  display: grid;
  gap: 6px 18px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(42, 35, 80, 0.85);
}

.page-about .duty-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--pink);
}

.page-about .duty-title {
  margin: 0;
  font-size: clamp(16px, 1.8vw, 18px);
  font-weight: 700;
  line-height: 1.4;
}

.page-about .duty-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* 三层服务 */
.page-about .layer-stack {
  display: grid;
  gap: 14px;
}

.page-about .layer {
  display: grid;
  gap: 6px 18px;
  padding: 18px 18px 18px 20px;
  border: 1px solid var(--panel-border);
  border-left-width: 2px;
  background: linear-gradient(100deg, rgba(30, 18, 64, 0.92), rgba(20, 11, 46, 0.55));
  box-shadow: var(--shadow-panel);
  border-radius: var(--radius);
  transition: border-color 0.36s var(--ease), transform 0.36s var(--ease);
}

.page-about .layer:hover {
  border-color: var(--panel-border-strong);
  transform: translateY(-2px);
}

.page-about .layer--hall {
  border-left-color: var(--violet);
}

.page-about .layer--room {
  border-left-color: var(--blue);
}

.page-about .layer--account {
  border-left-color: var(--mint);
}

.page-about .layer-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-about .layer-title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .layer-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* 团队 */
.page-about .team-block {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .team-media {
  margin: 0;
  border: 1px solid var(--panel-border);
  background: var(--panel);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-about .media-caption {
  padding: 10px 12px;
  border-top: 1px solid var(--about-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

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

.page-about .team-role {
  padding-left: 14px;
  border-left: 1px solid var(--about-line);
}

.page-about .role-title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.page-about .role-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .staff-grid {
  display: grid;
  gap: 14px;
}

.page-about .staff-group {
  padding: 14px;
  border: 1px solid rgba(42, 35, 80, 0.95);
  background: rgba(30, 18, 64, 0.42);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .staff-group:hover,
.page-about .staff-group:focus-visible {
  border-color: var(--panel-border-strong);
  background: rgba(30, 18, 64, 0.85);
  box-shadow: 0 0 0 1px rgba(122, 59, 255, 0.25), var(--glow-violet);
}

.page-about .staff-matrix {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  min-height: 44px;
}

.page-about .person {
  width: 9px;
  height: 9px;
  background: var(--blue);
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .staff-group--tech .person {
  background: var(--violet);
}

.page-about .staff-group--cs .person {
  background: var(--mint);
}

.page-about .staff-group--ops .person {
  background: rgba(167, 159, 201, 0.65);
}

.page-about .staff-group:hover .person,
.page-about .staff-group:focus-visible .person {
  background: var(--lemon);
  box-shadow: 0 0 8px rgba(232, 255, 77, 0.65);
}

.page-about .staff-meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--about-line);
}

.page-about .staff-role {
  font-size: 13.5px;
  color: var(--text);
  letter-spacing: 0.02em;
}

.page-about .staff-count {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--lemon);
  opacity: 0.55;
  transition: opacity 0.3s var(--ease);
}

.page-about .staff-group:hover .staff-count,
.page-about .staff-group:focus-visible .staff-count {
  opacity: 1;
}

/* 巡检 */
.page-about .inspect-block {
  display: grid;
  gap: clamp(24px, 4vw, 36px);
}

.page-about .check-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .check-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 4px 10px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(42, 35, 80, 0.85);
}

.page-about .check-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--blue);
}

.page-about .check-name {
  margin: 0;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.45;
}

.page-about .check-desc {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .check-cadence {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .cadence-item {
  padding: 8px 12px;
  border: 1px solid var(--panel-border);
  background: rgba(30, 18, 64, 0.6);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text);
}

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

.page-about .inspect-media {
  margin: 0;
  border: 1px solid var(--panel-border);
  background: var(--panel);
  border-radius: var(--radius);
  overflow: hidden;
}

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

/* 阶段演进 */
.page-about .road {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .road-item {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px dashed rgba(42, 35, 80, 0.95);
}

.page-about .road-year {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.8vw, 26px);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--blue);
}

.page-about .road-title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
}

.page-about .road-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* 合作生态 */
.page-about .partner-media {
  margin: 0 0 clamp(22px, 4vw, 34px);
  border: 1px solid var(--panel-border);
  background: var(--panel);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-about .partner-stats {
  display: grid;
  gap: 14px;
  margin: clamp(20px, 3vw, 30px) 0;
  padding: 18px 0;
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .partner-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .partner-stat .data-value {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1;
  color: var(--lemon);
}

.page-about .partner-stat-label {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.page-about .partner-text {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* 收尾 */
.page-about .about-cta {
  margin-top: clamp(36px, 6vw, 64px);
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  background: radial-gradient(130% 150% at 0% 0%, rgba(122, 59, 255, 0.24), rgba(20, 11, 46, 0.92) 62%);
  box-shadow: var(--shadow-panel);
}

.page-about .cta-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 3.2vw, 1.9rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.page-about .cta-text {
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

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

  .page-about .partner-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 880px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1fr) 216px;
    align-items: start;
  }

  .page-about .about-hero-side {
    padding: 6px 0 0 18px;
    border-top: 0;
    border-left: 1px solid var(--about-line);
  }

  .page-about .side-note {
    writing-mode: vertical-rl;
    letter-spacing: 0.3em;
  }

  .page-about .hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px 24px;
  }

  .page-about .chapter {
    padding-left: 44px;
  }

  .page-about .about-timeline::before {
    left: 12px;
  }

  .page-about .chapter::before {
    left: 8px;
  }

  .page-about .chapter-head {
    grid-template-columns: 52px minmax(0, 1fr) 26px;
    align-items: start;
    gap: 6px 18px;
  }

  .page-about .chapter-index {
    padding-top: 0.7em;
  }

  .page-about .chapter-note {
    grid-column: auto;
    justify-self: end;
    writing-mode: vertical-rl;
    letter-spacing: 0.3em;
  }

  .page-about .duty {
    grid-template-columns: 56px 190px minmax(0, 1fr);
    align-items: baseline;
  }

  .page-about .layer {
    grid-template-columns: 44px 150px minmax(0, 1fr);
    align-items: start;
    padding: 20px 24px 20px 22px;
  }

  .page-about .team-block {
    grid-template-columns: 316px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .inspect-block {
    grid-template-columns: minmax(0, 1fr) 380px;
    align-items: start;
  }

  .page-about .road-item {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 0 20px;
    align-items: baseline;
  }
}

@media (min-width: 1040px) {
  .page-about .staff-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .inspect-block {
    grid-template-columns: minmax(0, 1fr) 440px;
    gap: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .chapter::before {
    background: var(--about-dot);
    box-shadow: none;
  }

  .page-about .layer,
  .page-about .person,
  .page-about .staff-group,
  .page-about .staff-count,
  .page-about .chapter-note,
  .page-about .breadcrumb-link {
    transition-duration: 0.12s;
  }

  .page-about .layer:hover {
    transform: none;
  }
}
<<<END>>>