.page-about {
  --about-line: rgba(45, 74, 107, 0.55);
  --about-line-soft: rgba(74, 90, 106, 0.22);
  --about-grid: rgba(45, 74, 107, 0.26);
  --about-ink-soft: rgba(232, 236, 240, 0.74);
}

.page-about .about-hero {
  position: relative;
  padding: 28px 0 56px;
  background-color: var(--ink-900);
  background-image:
    repeating-linear-gradient(0deg, var(--about-grid) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(90deg, var(--about-grid) 0 1px, transparent 1px 56px);
  background-size: 56px 56px, 56px 56px;
  color: var(--fog-100);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -40% 40%;
  height: 320px;
  background: radial-gradient(closest-side, rgba(255, 107, 26, 0.16), transparent 70%);
  pointer-events: none;
}

.page-about .breadcrumb {
  margin-bottom: 26px;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.75rem;
  color: var(--mist-400);
  letter-spacing: 0.04em;
}

.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--slate-500);
}

.page-about .breadcrumb-current {
  color: var(--mist-300);
}

.page-about .about-hero-grid {
  position: relative;
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-about .about-hero .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--volt);
}

.page-about .about-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.1rem, 6vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper-000);
}

.page-about .about-hero-text {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--about-ink-soft);
}

.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  color: var(--mist-300);
  text-decoration: none;
  transition: color 0.22s ease, background-color 0.22s ease, border-color 0.22s ease;
}

.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible {
  color: var(--ink-900);
  background-color: var(--volt);
  border-color: var(--volt);
}

.page-about .about-jump .num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--volt);
}

.page-about .about-jump a:hover .num,
.page-about .about-jump a:focus-visible .num {
  color: var(--ink-900);
}

.page-about .figure-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-lg);
  background:
    repeating-linear-gradient(0deg, var(--about-grid) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, var(--about-grid) 0 1px, transparent 1px 40px),
    var(--ink-700);
  background-size: 40px 40px, 40px 40px, auto;
}

.page-about .figure-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  mix-blend-mode: luminosity;
  opacity: 0.9;
}

.page-about .figure-caption {
  display: block;
  padding: 10px 16px;
  font-size: 0.72rem;
  line-height: 1.6;
  color: var(--mist-300);
  background: rgba(11, 19, 32, 0.86);
  border-top: 1px solid var(--about-line);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  background: var(--ink-700);
}

.page-about .about-fact-value {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--signal);
}

.page-about .about-fact .stat-label {
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--mist-300);
}

/* 内容主线 */
.page-about .about-paths {
  padding: 60px 0;
  background: var(--fog-100);
  color: var(--ink-900);
}

.page-about .section-head {
  max-width: 62ch;
  margin-bottom: 32px;
}

.page-about .about-paths .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brick);
}

.page-about .section-title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .section-lead {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--slate-500);
}

.page-about .about-dossiers {
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-dossier {
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-dossier .dossier-row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  padding: 24px 0;
}

.page-about .about-dossier .dossier-num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--volt);
}

.page-about .about-dossier h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.08rem;
  line-height: 1.4;
}

.page-about .about-dossier p {
  margin: 0 0 12px;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--slate-500);
}

.page-about .tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  background: rgba(74, 90, 106, 0.12);
  color: var(--slate-500);
}

.page-about .tag--orange {
  background: rgba(255, 107, 26, 0.14);
  color: #B8430A;
}

.page-about .tag--green {
  background: rgba(24, 224, 168, 0.16);
  color: #0A7A5A;
}

.page-about .tag--gold {
  background: rgba(166, 124, 30, 0.16);
  color: #7A5A12;
}

/* 团队 */
.page-about .about-team {
  padding: 60px 0;
  background: var(--ink-900);
  color: var(--fog-100);
}

.page-about .about-team .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--volt);
}

.page-about .about-team .section-title {
  color: var(--paper-000);
}

.page-about .about-team .section-lead {
  color: var(--about-ink-soft);
}

.page-about .about-team-figure {
  margin: 0 0 28px;
}

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

.page-about .about-role {
  padding: 22px 20px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(20, 34, 53, 0.92), rgba(11, 19, 32, 0.92));
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .about-role:hover {
  border-color: rgba(255, 107, 26, 0.55);
  transform: translateY(-2px);
}

.page-about .about-role-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}

.page-about .about-role-num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--volt);
}

.page-about .about-role-name {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.12rem;
  color: var(--paper-000);
}

.page-about .about-role-duty {
  margin: 0 0 16px;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--mist-300);
}

.page-about .about-role-toggle {
  cursor: pointer;
}

.page-about .card.about-role-detail {
  margin-top: 14px;
  padding: 16px;
  border: 1px dashed var(--about-line);
  border-radius: var(--radius-sm);
  background: rgba(45, 74, 107, 0.16);
  color: var(--fog-100);
}

.page-about .about-role-detail p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--mist-300);
}

/* 节奏 */
.page-about .about-rhythm {
  padding: 60px 0;
  background: var(--paper-000);
  color: var(--ink-900);
}

.page-about .about-rhythm .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dark-gold);
}

.page-about .about-rhythm-grid {
  display: grid;
  gap: 32px;
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 30px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--volt) 0%, var(--dark-gold) 45%, rgba(45, 74, 107, 0.3) 100%);
}

.page-about .about-node {
  position: relative;
  padding-bottom: 24px;
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper-000);
  border: 3px solid var(--line-blue);
  box-sizing: border-box;
}

.page-about .about-node--current::before {
  background: var(--volt);
  border-color: var(--volt);
  box-shadow: 0 0 0 5px rgba(255, 107, 26, 0.18);
}

.page-about .about-node-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 6px;
}

.page-about .about-node-year {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark-gold);
}

.page-about .about-node--current .about-node-year {
  color: var(--volt);
}

.page-about .about-node-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
}

.page-about .about-node-text {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.8;
  color: var(--slate-500);
}

.page-about .about-node-text .link-inline {
  color: var(--ink-900);
  text-decoration: underline;
  text-decoration-color: var(--volt);
  text-underline-offset: 3px;
}

.page-about .about-cycles {
  padding: 22px 20px;
  border-radius: var(--radius-md);
  background: var(--ink-900);
  color: var(--fog-100);
}

.page-about .about-cycles-title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  color: var(--paper-000);
}

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

.page-about .about-cycle-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px dashed rgba(45, 74, 107, 0.8);
}

.page-about .about-cycle-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-cycle-key {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--signal);
}

.page-about .about-cycle-val {
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--mist-300);
}

.page-about .about-rhythm-figure {
  margin-top: 32px;
}

/* 信任 */
.page-about .about-trust {
  padding: 60px 0 68px;
  background: var(--ink-700);
  color: var(--fog-100);
}

.page-about .about-trust .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--signal);
}

.page-about .about-trust .section-title {
  color: var(--paper-000);
}

.page-about .about-trust .section-lead {
  color: var(--about-ink-soft);
}

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

.page-about .about-proof {
  padding: 22px 20px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  background: rgba(11, 19, 32, 0.55);
}

.page-about .about-proof-value {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--volt);
}

.page-about .about-proof-title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  color: var(--paper-000);
}

.page-about .about-proof p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--mist-300);
}

.page-about .about-cta {
  display: grid;
  gap: 18px;
  margin-top: 34px;
  padding: 24px 22px;
  border: 1px solid var(--about-line);
  border-left: 4px solid var(--volt);
  border-radius: var(--radius-md);
  background: rgba(11, 19, 32, 0.68);
}

.page-about .about-cta-text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

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

.page-about .about-cta-actions .btn {
  text-decoration: none;
}

.page-about .about-cta-actions .btn--primary {
  background: var(--volt);
  border-color: var(--volt);
  color: var(--ink-900);
}

.page-about .about-cta-actions .btn--ghost {
  background: transparent;
  border-color: var(--about-line);
  color: var(--fog-100);
}

.page-about .about-cta-actions .btn--ghost:hover,
.page-about .about-cta-actions .btn--ghost:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
}

@media (min-width: 760px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-proofs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 26px 28px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 36px 0 72px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 48px;
  }

  .page-about .about-paths,
  .page-about .about-team,
  .page-about .about-rhythm,
  .page-about .about-trust {
    padding: 76px 0;
  }

  .page-about .about-trust {
    padding-bottom: 84px;
  }

  .page-about .about-dossier .dossier-row {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 28px;
    padding: 28px 0;
  }

  .page-about .about-dossier .dossier-num {
    font-size: 1.8rem;
  }

  .page-about .about-rhythm-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-rhythm-figure {
    margin-top: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-jump a {
    transition: none;
  }

  .page-about .about-role:hover {
    transform: none;
  }
}
</final>