.page-about {
  --about-gap: clamp(1.5rem, 4vw, 3.25rem);
  --about-radius: var(--radius-lg);
  display: block;
}

/* 面包屑上方的呼吸 */
.page-about .breadcrumb {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(1.25rem, 4vw, 2.25rem) 0 clamp(2rem, 6vw, 3.75rem);
  background:
    radial-gradient(60% 70% at 8% 0%, rgba(232, 176, 75, 0.16), transparent 62%),
    radial-gradient(70% 80% at 92% 20%, rgba(63, 58, 122, 0.55), transparent 68%);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

.page-about .about-hero__kicker {
  margin: 0 0 0.9rem;
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-about .about-hero__title {
  margin: 0 0 1.1rem;
  font-size: clamp(1.85rem, 5.2vw, 3.4rem);
  line-height: 1.18;
  letter-spacing: 0.04em;
  font-weight: 900;
  color: var(--c-snow);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(1rem, 2.3vw, 1.125rem);
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-about .about-hero__panel {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid var(--c-line);
  border-radius: var(--about-radius);
  background: linear-gradient(155deg, rgba(63, 58, 122, 0.9), rgba(20, 27, 61, 0.92));
  align-self: start;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.25rem;
  margin: 0;
}

.page-about .about-stat {
  border-top: 1px solid var(--c-line-soft);
  padding-top: 0.6rem;
}

.page-about .about-stat__label {
  margin: 0 0 0.25rem;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-mist);
}

.page-about .about-stat__num {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 2.25rem);
  font-weight: 900;
  letter-spacing: 0.01em;
  line-height: 1.1;
  color: var(--c-gold);
}

.page-about .about-stat__unit {
  margin-left: 0.25rem;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.page-about .about-hero__panelNote {
  margin: 1.25rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--c-line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 章节锚点条 ---------- */
.page-about .about-jump {
  border-top: 1px solid var(--c-line-soft);
  border-bottom: 1px solid var(--c-line-soft);
  background: rgba(37, 42, 92, 0.42);
}

.page-about .about-jump__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0.75rem 0;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .about-jump__link {
  display: inline-block;
  white-space: nowrap;
  padding: 0.42rem 0.85rem;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-pill);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .about-jump__link:hover,
.page-about .about-jump__link:focus-visible {
  color: var(--c-void);
  background: var(--c-gold);
  border-color: var(--c-gold);
}

/* ---------- 杂志式章节骨架 ---------- */
.page-about .about-chapter {
  padding: clamp(2.25rem, 6vw, 4.25rem) 0;
  border-bottom: 1px solid var(--c-line-soft);
}

.page-about .about-chapter--band {
  background: linear-gradient(180deg, rgba(37, 42, 92, 0.72), rgba(20, 27, 61, 0.2));
}

.page-about .about-chapter__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-chapter__num {
  margin: 0 0 0.5rem;
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: 0.01em;
  color: var(--c-gold);
}

.page-about .about-chapter__keys {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  line-height: 1.9;
  color: var(--c-mist);
}

.page-about .about-chapter__title {
  margin: 0 0 1rem;
  font-size: clamp(1.4rem, 3.6vw, 2.05rem);
  line-height: 1.35;
  letter-spacing: 0.05em;
  font-weight: 900;
  color: var(--c-snow);
}

.page-about .about-chapter__lead {
  margin: 0 0 1.5rem;
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--c-mist);
}

.page-about .about-chapter__prose {
  max-width: 62ch;
}

.page-about .about-chapter__prose p {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--c-mist);
}

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

.page-about .about-chapter__footNote {
  margin: 1.5rem 0 0;
  padding-left: 1rem;
  border-left: 3px solid var(--c-ember);
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}

/* ---------- 图片 ---------- */
.page-about .about-media {
  margin: 1.75rem 0 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  border: 1px solid var(--c-line);
  background: linear-gradient(150deg, var(--c-night), var(--c-plateau));
}

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

.page-about .about-media .media__caption {
  padding: 0.7rem 1rem 0.85rem;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

/* ---------- 引用块 ---------- */
.page-about .about-quote {
  margin: 1.75rem 0 0;
  padding: clamp(1.1rem, 3vw, 1.6rem) clamp(1.1rem, 3vw, 1.9rem);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--c-gold);
  background: rgba(63, 58, 122, 0.5);
}

.page-about .about-quote__text {
  margin: 0 0 0.5rem;
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--c-snow);
}

.page-about .about-quote__cite {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-gold);
}

/* ---------- 原则卡片 ---------- */
.page-about .about-principles {
  display: grid;
  gap: 0.9rem;
}

.page-about .principle-card {
  padding: 1.15rem 1.15rem 1.3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-line);
  background: linear-gradient(160deg, rgba(63, 58, 122, 0.55), rgba(20, 27, 61, 0.35));
}

.page-about .principle-card__idx {
  margin: 0 0 0.5rem;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-teal);
}

.page-about .principle-card__title {
  margin: 0 0 0.55rem;
  font-size: 1.0625rem;
  line-height: 1.45;
  letter-spacing: 0.04em;
  font-weight: 900;
  color: var(--c-snow);
}

.page-about .principle-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-mist);
}

/* ---------- 流程 ---------- */
.page-about .flow-list {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .flow-step {
  position: relative;
  padding: 1rem 0 0 3rem;
  border-top: 1px solid var(--c-line-soft);
}

.page-about .flow-step__num {
  position: absolute;
  left: 0;
  top: 0.85rem;
  margin: 0;
  font-size: 1.6rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--c-gold);
}

.page-about .flow-step__title {
  margin: 0 0 0.4rem;
  font-size: 1.0625rem;
  letter-spacing: 0.06em;
  font-weight: 800;
  color: var(--c-snow);
}

.page-about .flow-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-mist);
}

/* ---------- 节奏带 ---------- */
.page-about .rhythm-band {
  margin-top: 1.75rem;
  padding: clamp(1.1rem, 3vw, 1.6rem);
  border-radius: var(--about-radius);
  background: linear-gradient(100deg, rgba(232, 176, 75, 0.16), rgba(63, 156, 155, 0.14) 55%, rgba(63, 58, 122, 0.5));
  border: 1px solid var(--c-line);
}

.page-about .rhythm-band__title {
  margin: 0 0 0.9rem;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-gold);
}

.page-about .rhythm-band__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .rhythm-band__item {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-snow);
}

.page-about .rhythm-band__num {
  display: block;
  font-size: 1.5rem;
  font-weight: 900;
  line-height: 1.1;
  color: var(--c-gold);
  margin-bottom: 0.15rem;
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 0.9rem;
}

.page-about .team-card {
  padding: 1.1rem 1.1rem 1.2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-line);
  background: rgba(37, 42, 92, 0.5);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

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

.page-about .team-card__name {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  letter-spacing: 0.08em;
  font-weight: 900;
  color: var(--c-snow);
}

.page-about .team-card__name::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 0.5rem;
  border-radius: 50%;
  background: var(--c-gold);
  vertical-align: middle;
}

.page-about .team-card__duty {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-mist);
}

/* ---------- 里程碑 ---------- */
.page-about .ms-track {
  display: flex;
  gap: 0.9rem;
  margin: 1.5rem 0 0;
  padding: 0 0 0.75rem;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .ms-card {
  flex: 0 0 min(78vw, 260px);
  scroll-snap-align: start;
  padding: 1.1rem 1.1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-line);
  background: linear-gradient(170deg, rgba(20, 27, 61, 0.9), rgba(63, 58, 122, 0.62));
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about .ms-card:hover,
.page-about .ms-card:focus-within {
  border-color: var(--c-ember);
  box-shadow: 0 12px 28px rgba(20, 27, 61, 0.55);
}

.page-about .ms-card__year {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--c-gold);
}

.page-about .ms-card__title {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  line-height: 1.45;
  letter-spacing: 0.04em;
  font-weight: 800;
  color: var(--c-snow);
}

.page-about .ms-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .ms-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem 1rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ms-fact {
  padding-top: 0.6rem;
  border-top: 1px solid var(--c-line-soft);
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-mist);
}

.page-about .ms-fact__num {
  display: block;
  font-size: 1.4rem;
  font-weight: 900;
  line-height: 1.2;
  color: var(--c-snow);
  margin-bottom: 0.2rem;
}

/* ---------- 下一步链接 ---------- */
.page-about .about-links {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-about .about-link-card {
  display: block;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-line);
  background: rgba(37, 42, 92, 0.45);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .about-link-card:hover,
.page-about .about-link-card:focus-visible {
  border-color: var(--c-gold);
  background: rgba(63, 58, 122, 0.65);
}

.page-about .about-link-card__label {
  display: block;
  margin-bottom: 0.3rem;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--c-snow);
}

.page-about .about-link-card__label::after {
  content: " →";
  color: var(--c-gold);
}

.page-about .about-link-card__desc {
  display: block;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-mist);
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta {
  padding: clamp(2rem, 6vw, 3.5rem) 0 clamp(2.5rem, 7vw, 4rem);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 1.5rem;
  padding: clamp(1.4rem, 4vw, 2.4rem);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-line);
  background:
    radial-gradient(70% 100% at 100% 0%, rgba(232, 176, 75, 0.24), transparent 62%),
    linear-gradient(120deg, rgba(63, 58, 122, 0.95), rgba(20, 27, 61, 0.95));
}

.page-about .about-cta__title {
  margin: 0 0 0.65rem;
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  line-height: 1.35;
  letter-spacing: 0.05em;
  font-weight: 900;
  color: var(--c-snow);
}

.page-about .about-cta__desc {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mist);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-self: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-principles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem 1.75rem;
  }

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

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

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

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

  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem 1.5rem;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-about .about-chapter__aside {
    position: sticky;
    top: 1.5rem;
    align-self: start;
  }

  .page-about .ms-track {
    overflow-x: visible;
    padding-bottom: 0;
  }

  .page-about .ms-card {
    flex: 1 1 0;
  }
}

@media (min-width: 1180px) {
  .page-about .about-chapter__grid {
    grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .ms-card,
  .page-about .about-jump__link,
  .page-about .about-link-card {
    transition: none;
  }

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