.page-about {
  --about-band-line: rgba(255, 255, 255, .20);
  background: var(--paper);
  color: var(--ink);
}

.page-about .breadcrumbs {
  padding-top: var(--sp-4);
  padding-bottom: var(--sp-2);
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: var(--sp-5);
}

.page-about .about-hero__lead .h1 {
  margin: var(--sp-2) 0 var(--sp-3);
}

.page-about .about-hero__lead .lede {
  max-width: 46ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.page-about .about-hero__panel {
  background: var(--navy);
  color: var(--on-dark);
  border-radius: var(--radius-m);
  padding: var(--sp-4);
  border: 1px solid var(--navy-deep);
}

.page-about .about-hero__panelTitle {
  margin: 0 0 var(--sp-3);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--on-dark-soft);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
}

.page-about .about-hero__num {
  display: block;
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--orange-bright);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--on-dark-soft);
}

.page-about .about-hero__foot {
  margin: var(--sp-4) 0 0;
  padding-top: var(--sp-3);
  border-top: 1px solid var(--on-dark-line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--on-dark-soft);
}

/* ---------- 正文骨架 ---------- */
.page-about .about-body {
  display: grid;
  gap: var(--sp-5);
  padding-bottom: var(--sp-6);
}

.page-about .about-index {
  background: var(--indigo);
  border-radius: var(--radius-m);
  padding: var(--sp-3);
}

.page-about .about-index__title {
  margin: 0 0 var(--sp-2);
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(255, 255, 255, .60);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--sp-1);
  overflow-x: auto;
  scrollbar-width: thin;
}

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

.page-about .about-index a {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, .26);
  border-radius: 999px;
  color: #fff;
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  background: rgba(255, 255, 255, .14);
  border-color: var(--orange-bright);
}

.page-about .about-index__num {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--orange-bright);
  font-variant-numeric: tabular-nums;
}

.page-about .about-chapters {
  display: grid;
  gap: var(--sp-6);
  min-width: 0;
}

.page-about .about-chapter {
  border-top: 1px solid var(--line);
  padding-top: var(--sp-4);
  min-width: 0;
}

.page-about .about-chapter__head {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}

.page-about .about-chapter__num {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-about .about-chapter__head .h2 {
  margin: 0;
}

.page-about .about-chapter__body p {
  max-width: 62ch;
  margin: 0 0 var(--sp-3);
  font-size: 16px;
  line-height: 1.9;
}

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

.page-about .about-chapter__tail {
  max-width: 62ch;
  margin: var(--sp-4) 0 0;
  font-size: 16px;
  line-height: 1.9;
}

.page-about .about-chapter__tail a {
  color: var(--orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-chapter__media {
  display: grid;
  gap: var(--sp-4);
  align-items: start;
}

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

.page-about .about-figure--band {
  margin-top: var(--sp-4);
}

.page-about figure {
  margin: 0;
}

.page-about .media-caption {
  display: block;
  margin-top: var(--sp-2);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 关键数字行 ---------- */
.page-about .keyfact {
  margin: var(--sp-4) 0 0;
  padding-bottom: var(--sp-2);
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--font-serif);
  font-size: clamp(24px, 4.4vw, 36px);
  font-weight: 600;
  line-height: 1.25;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
}

.page-about .keyfact__note {
  display: block;
  margin-top: 8px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 靛紫分区 ---------- */
.page-about .about-band {
  background: var(--indigo);
  color: #fff;
  border-radius: var(--radius-m);
  padding: var(--sp-4);
}

.page-about .about-band .about-chapter {
  border-top-color: var(--about-band-line);
  padding-top: var(--sp-4);
}

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

.page-about .about-band .about-chapter + .about-chapter {
  margin-top: var(--sp-5);
}

.page-about .about-band .h2 {
  color: #fff;
}

.page-about .about-band .about-chapter__num {
  color: var(--orange-bright);
}

.page-about .about-band .about-chapter__body p {
  color: rgba(255, 255, 255, .86);
}

.page-about .about-band .keyfact {
  color: #fff;
  border-bottom-color: rgba(255, 255, 255, .32);
}

.page-about .about-band .keyfact__note {
  color: rgba(255, 255, 255, .70);
}

.page-about .about-band .media-caption {
  color: rgba(255, 255, 255, .68);
}

/* ---------- 人员名册 ---------- */
.page-about .roster {
  list-style: none;
  margin: var(--sp-4) 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-band-line);
  border: 1px solid var(--about-band-line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .roster__item {
  display: block;
  padding: var(--sp-3);
  background: var(--indigo);
}

.page-about .roster__num {
  display: block;
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--orange-bright);
  font-variant-numeric: tabular-nums;
}

.page-about .roster__label {
  display: block;
  margin-top: 6px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
}

.page-about .roster__note {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .68);
}

/* ---------- 课时结构图 ---------- */
.page-about .course-chart {
  margin: var(--sp-4) 0 0;
}

.page-about .course-chart__svg {
  display: block;
  width: 100%;
  height: 44px;
  border-radius: var(--radius-s);
}

.page-about .course-chart__cap {
  margin-top: var(--sp-2);
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(255, 255, 255, .60);
}

.page-about .course-chart__legend {
  list-style: none;
  margin: var(--sp-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-2);
}

.page-about .course-chart__legend li {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  align-items: center;
  gap: 4px 10px;
  padding: 10px 12px;
  border: 1px solid var(--about-band-line);
  border-radius: var(--radius-s);
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .course-chart__legend li:hover {
  background: rgba(255, 255, 255, .08);
  border-color: var(--orange-bright);
}

.page-about .course-chart__legend strong {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
}

.page-about .course-chart__dot {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

.page-about .dot-practice { background: #1E8C7A; }
.page-about .dot-theory { background: #E4681C; }
.page-about .dot-mentor { background: #C2531A; }
.page-about .dot-exam { background: #7A2E3B; }

.page-about .course-chart__note {
  grid-column: 2;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(255, 255, 255, .66);
}

/* ---------- 合作流程步骤 ---------- */
.page-about .steps {
  list-style: none;
  counter-reset: step;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-2);
}

.page-about .steps li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  align-items: baseline;
  gap: var(--sp-2);
  padding: var(--sp-3);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  font-size: 15px;
  line-height: 1.7;
  transition: border-color 180ms var(--ease), transform 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-about .steps li:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.page-about .steps__num {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

/* ---------- 底部去向 ---------- */
.page-about .about-cta {
  display: grid;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
}

.page-about .about-cta__card {
  display: block;
  padding: var(--sp-3);
  text-decoration: none;
  color: var(--ink);
}

.page-about .about-cta__kicker {
  display: block;
  margin-bottom: var(--sp-2);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-about .about-cta__card strong {
  display: block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.65;
}

.page-about .about-cta__more {
  display: block;
  margin-top: var(--sp-3);
  padding-top: var(--sp-2);
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--navy);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__panel {
    padding: var(--sp-5);
  }

  .page-about .about-chapter__media {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: var(--sp-5);
  }

  .page-about .about-band {
    padding: var(--sp-5);
  }

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

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

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

/* ---------- 桌面：编辑刊物式纵版阅读 ---------- */
@media (min-width: 1040px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: var(--sp-6);
    align-items: start;
  }

  .page-about .about-body {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: var(--sp-6);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: 92px;
    padding: var(--sp-4) var(--sp-3);
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-about .about-index a {
    display: flex;
    width: 100%;
    padding: 8px 10px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    color: rgba(255, 255, 255, .76);
  }

  .page-about .about-index a:hover,
  .page-about .about-index a:focus-visible {
    background: rgba(255, 255, 255, .10);
    border-left-color: var(--orange-bright);
    color: #fff;
  }

  .page-about .about-band {
    padding: var(--sp-6);
  }

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