.page-about {
  --about-dot: 14px;
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-about [id] {
  scroll-margin-top: 96px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(16px, 3vw, 32px) 0 clamp(32px, 6vw, 80px);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(38px, 8vw, 96px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-hero__title em {
  font-style: normal;
  font-weight: 800;
  color: var(--rosso);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 40em;
  font-size: var(--fs-17);
  line-height: 1.8;
}

.page-about .hero-facts {
  list-style: none;
  margin: 0;
  padding: clamp(16px, 2.5vw, 24px) 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(12px, 2vw, 24px);
  border-top: var(--hair) solid var(--line);
}

.page-about .hero-facts li {
  padding-left: 12px;
  border-left: 3px solid var(--line);
}

.page-about .hero-facts li:first-child {
  border-left-color: var(--rosso);
}

.page-about .hero-facts b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 28px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-about .hero-facts span {
  display: block;
  margin-top: 4px;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-toc a {
  display: inline-block;
  padding: 6px 11px;
  border: var(--hair) solid var(--line);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-toc a:hover,
.page-about .about-toc a:focus-visible {
  color: var(--ink);
  border-color: var(--rosso);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-section {
  padding: clamp(32px, 5.5vw, 72px) 0;
  border-top: var(--hair) solid var(--line);
}

.page-about .about-section__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 36px);
}

.page-about .about-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-about .about-section__lead {
  margin: 0;
  max-width: 42em;
  font-size: var(--fs-17);
  line-height: 1.75;
}

.page-about .about-prose {
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-prose p {
  margin: 0 0 1em;
  line-height: 1.8;
}

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

/* ---------- 引文 ---------- */
.page-about .manifesto {
  position: relative;
  padding: clamp(22px, 4.6vw, 56px);
  background: var(--paper-2);
  border: var(--hair) solid var(--line);
}

.page-about .manifesto::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 4px;
  background: var(--rosso);
}

.page-about .manifesto p {
  margin: 0;
  max-width: 26em;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(22px, 3.6vw, 40px);
  line-height: 1.42;
  letter-spacing: -0.01em;
}

.page-about .manifesto p::first-letter {
  float: left;
  padding: 0.06em 0.12em 0 0;
  font-size: 2.2em;
  line-height: 0.86;
  font-weight: 800;
  color: var(--rosso);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(24px, 4vw, 40px);
  border: var(--hair) solid var(--line);
}

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

/* ---------- 时间线 ---------- */
.page-about .tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 7px;
  width: 1px;
  background: var(--line);
}

.page-about .tl-item {
  position: relative;
  padding-bottom: clamp(14px, 2.4vw, 26px);
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  top: 10px;
  left: -28px;
  width: var(--about-dot);
  height: var(--about-dot);
  box-sizing: border-box;
  border: 3px solid var(--rosso);
  border-radius: 50%;
  background: var(--paper);
}

.page-about .tl-card {
  padding: clamp(12px, 2vw, 18px);
  background: var(--paper);
  border: var(--hair) solid var(--line);
  transition: transform 0.24s ease, border-color 0.24s ease;
}

.page-about .tl-card:hover,
.page-about .tl-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--lime);
}

.page-about .tl-time {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--rosso);
}

.page-about .tl-title {
  margin: 5px 0 6px;
  font-size: var(--fs-17);
  font-weight: 800;
  line-height: 1.3;
}

.page-about .tl-note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--muted);
}

.page-about .tl-item--key .tl-card {
  background: var(--rosso);
  border-color: var(--rosso);
}

.page-about .tl-item--key .tl-title {
  color: var(--paper);
}

.page-about .tl-item--key .tl-time {
  color: var(--lime);
}

.page-about .tl-item--key .tl-note {
  color: rgba(247, 245, 241, 0.86);
}

/* ---------- 字段区 ---------- */
.page-about .rail-card {
  padding: 14px;
  border: var(--hair) solid var(--line);
  border-left: 3px solid var(--rosso);
  margin-bottom: 12px;
}

.page-about .rail-card--plain {
  border-left-color: var(--steel);
}

.page-about .rail-label {
  margin: 0 0 6px;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .rail-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .rail-note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.65;
  color: var(--muted);
}

.page-about .field-grid {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .field-card {
  --bar: var(--rosso);
  padding: 14px;
  background: var(--paper);
  border: var(--hair) solid var(--line);
  border-top: 4px solid var(--bar);
}

.page-about .field-card--cyan {
  --bar: var(--cyan);
}

.page-about .field-card--steel {
  --bar: var(--steel);
}

.page-about .field-card--lime {
  --bar: var(--lime);
}

.page-about .field-card__idx {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .field-card__name {
  margin: 0 0 6px;
  font-size: var(--fs-17);
  font-weight: 800;
}

.page-about .field-card__desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 年表 ---------- */
.page-about .seasons-layout {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  grid-template-columns: minmax(0, 1fr);
}

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

.page-about .years li {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-top: var(--hair) solid var(--line);
}

.page-about .years li:last-child {
  border-bottom: var(--hair) solid var(--line);
}

.page-about .year {
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--rosso);
  letter-spacing: -0.02em;
}

.page-about .year-body h3 {
  margin: 0 0 4px;
  font-size: var(--fs-17);
  font-weight: 800;
}

.page-about .year-body p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--muted);
}

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

/* ---------- 团队 ---------- */
.page-about .team-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .team-card {
  --bar: var(--rosso);
  padding: 16px;
  background: var(--paper);
  border: var(--hair) solid var(--line);
  border-top: 4px solid var(--bar);
  transition: transform 0.24s ease, border-color 0.24s ease;
}

.page-about .team-card--cyan {
  --bar: var(--cyan);
}

.page-about .team-card--steel {
  --bar: var(--steel);
}

.page-about .team-card--lime {
  --bar: var(--lime);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--lime);
  border-top-color: var(--bar);
}

.page-about .team-card__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .team-card__name {
  margin: 0 0 6px;
  font-size: var(--fs-17);
  font-weight: 800;
}

.page-about .team-card__desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-figure--team {
  margin-top: clamp(20px, 3vw, 32px);
}

/* ---------- 评审步骤 ---------- */
.page-about .review-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: rv;
}

.page-about .review-steps li {
  counter-increment: rv;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: var(--hair) solid var(--line);
}

.page-about .review-steps li:last-child {
  border-bottom: var(--hair) solid var(--line);
}

.page-about .review-steps li::before {
  content: counter(rv, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--rosso);
  padding-top: 3px;
}

.page-about .review-steps h3 {
  margin: 0 0 4px;
  font-size: var(--fs-17);
  font-weight: 800;
}

.page-about .review-steps p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--muted);
}

.page-about .review-steps a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan);
}

.page-about .review-steps a:hover,
.page-about .review-steps a:focus-visible {
  border-bottom-color: var(--rosso);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  background: var(--ink);
  color: var(--paper);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 20px;
  padding: clamp(32px, 5vw, 64px) 0;
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 30em;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.45;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-cta .btn--ghost {
  color: var(--paper);
  border-color: rgba(247, 245, 241, 0.45);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .tl {
    padding-left: 0;
  }

  .page-about .tl::before {
    left: 50%;
    top: 4px;
    bottom: 4px;
  }

  .page-about .tl-item {
    width: 50%;
    padding-right: 44px;
    padding-bottom: 26px;
  }

  .page-about .tl-item::before {
    left: auto;
    right: calc(var(--about-dot) / -2);
    top: 12px;
  }

  .page-about .tl-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 44px;
  }

  .page-about .tl-item:nth-child(even)::before {
    right: auto;
    left: calc(var(--about-dot) / -2);
  }

  .page-about .seasons-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
  }

  .page-about .about-figure--side {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1080px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-card,
  .page-about .team-card,
  .page-about .about-toc a {
    transition: none;
  }

  .page-about .tl-card:hover,
  .page-about .tl-card:focus-within,
  .page-about .team-card:hover,
  .page-about .team-card:focus-within {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>