/* ==========================================================
   会馆介绍页 · page-about
   窄栏正文 + 宽边注；时间推进叙述，末段转步骤式
   ========================================================== */

.page-about {
  background-color: var(--c-warm);
  color: var(--c-ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-about .prose {
  max-width: 36em;
  line-height: 1.85;
  font-size: var(--fs-16);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding: 22px 0 0;
  background-color: var(--c-warm);
  background-image: var(--paper);
}

.page-about .about-hero .breadcrumbs {
  font-size: var(--fs-12);
  margin-bottom: 26px;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-hero__text .eyebrow {
  color: var(--c-cinnabar);
  letter-spacing: 0.18em;
}

.page-about .about-hero__text h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.85rem, 5.8vw, 3rem);
  line-height: 1.24;
  letter-spacing: 0.01em;
  margin: 10px 0 18px;
  max-width: 15em;
}

.page-about .about-hero__text .lede {
  max-width: 34em;
  font-size: var(--fs-16);
  line-height: 1.9;
  color: var(--text-sub);
}

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

.page-about .about-hero__figure .figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--rule);
}

.page-about .about-hero__figure .figure__caption {
  margin-top: 10px;
  font-size: var(--fs-12);
  color: var(--c-stone);
  line-height: 1.7;
}

/* 章节索引条 */

.page-about .about-toc {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  margin-top: 32px;
  padding: 13px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  scrollbar-width: thin;
}

.page-about .about-toc__label {
  flex: 0 0 auto;
  align-self: center;
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--c-stone);
  margin-right: 10px;
}

.page-about .about-toc__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 5px 11px;
  font-size: var(--fs-14);
  color: var(--c-ink);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.page-about .about-toc__link .mono {
  font-size: var(--fs-12);
  color: var(--c-cinnabar);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  background-color: var(--c-sand);
  border-color: var(--rule);
  outline: none;
}

.page-about .about-toc__link.is-current {
  background-color: var(--c-cinnabar);
  border-color: var(--c-cinnabar);
  color: var(--c-warm);
}

.page-about .about-toc__link.is-current .mono {
  color: var(--c-warm);
}

/* ---------- 通用区块节奏 ---------- */

.page-about .section {
  padding-top: 60px;
  padding-bottom: 60px;
}

.page-about .section-head {
  margin-bottom: 34px;
}

.page-about .section-head__index {
  font-size: var(--fs-12);
  letter-spacing: 0.24em;
  color: var(--c-cinnabar);
}

.page-about .section-head__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.6vw, 2.05rem);
  line-height: 1.35;
  margin: 8px 0 10px;
}

.page-about .section-head__line {
  max-width: 32em;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-sub);
}

/* ---------- 01 会馆的来路 ---------- */

.page-about .about-stages {
  background-color: var(--c-warm);
  background-image: var(--paper);
}

.page-about .about-stages__grid {
  display: grid;
  gap: 24px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--rule);
}

.page-about .about-stages__body .prose + .prose {
  margin-top: 16px;
}

.page-about .about-stages__aside .note {
  margin: 0;
  padding: 14px 16px;
  background-color: var(--c-sand);
  border-left: 2px solid var(--c-terracotta);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-sub);
}

.page-about .about-stages__aside .note .mono {
  color: var(--c-ink);
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-about .about-timeline__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 22px 2px;
  border-bottom: 1px solid var(--rule);
  transition: background-color 0.2s ease;
}

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

.page-about .about-timeline__item:hover {
  background-color: var(--c-sand);
}

.page-about .about-timeline__mark {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 3px;
}

.page-about .about-timeline__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--c-terracotta);
  color: var(--c-terracotta);
  font-size: var(--fs-14);
  font-variant-numeric: tabular-nums;
}

.page-about .about-timeline__item:hover .about-timeline__num {
  background-color: var(--c-terracotta);
  color: var(--c-warm);
}

.page-about .about-timeline__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fs-20);
  line-height: 1.4;
  margin: 0 0 8px;
}

.page-about .about-timeline__content p {
  margin: 0;
  max-width: 40em;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--text-sub);
}

/* ---------- 02 团队与分工 ---------- */

.page-about .about-team__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-team__body .prose + .about-team__list {
  margin-top: 26px;
}

.page-about .about-team__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--rule-strong);
}

.page-about .about-team__item {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
}

.page-about .about-team__num {
  font-size: var(--fs-28);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--c-cinnabar);
}

.page-about .about-team__text h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fs-16);
  margin: 0 0 6px;
}

.page-about .about-team__text p {
  margin: 0;
  max-width: 38em;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--text-sub);
}

.page-about .about-team__aside {
  display: grid;
  gap: 18px;
  align-content: start;
}

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

.page-about .about-team__figure .figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--rule);
}

.page-about .about-team__figure .figure__caption {
  margin-top: 8px;
  font-size: var(--fs-12);
  color: var(--c-stone);
  line-height: 1.7;
}

.page-about .about-team__aside .note {
  margin: 0;
  padding: 14px 16px;
  background-color: var(--c-warm);
  border-left: 2px solid var(--c-turquoise);
  font-size: var(--fs-12);
  line-height: 1.9;
  color: var(--text-sub);
}

.page-about .about-team__aside .note .mono {
  font-size: var(--fs-20);
  color: var(--c-turquoise);
  font-variant-numeric: tabular-nums;
}

/* ---------- 03 服务覆盖 ---------- */

.page-about .about-reach {
  background-color: var(--c-ink);
  background-image:
    repeating-linear-gradient(90deg, rgba(247, 243, 236, 0.04) 0 1px, transparent 1px 4px);
  color: var(--c-warm);
}

.page-about .about-reach .section-head__index {
  color: var(--c-cinnabar-lt);
}

.page-about .about-reach .section-head__title {
  color: var(--c-warm);
}

.page-about .about-reach .section-head__line {
  color: var(--c-mist);
}

.page-about .about-reach__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-reach__body .prose {
  color: #D7DDE2;
}

.page-about .about-reach__body .prose + .prose {
  margin-top: 16px;
}

.page-about .about-reach__figure {
  margin: 0;
  order: -1;
}

.page-about .about-reach__figure .figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--rule-dark);
}

.page-about .about-reach__figure .figure__caption {
  margin-top: 10px;
  font-size: var(--fs-12);
  color: var(--c-mist);
  line-height: 1.7;
}

/* 折叠面板 */

.page-about .about-reach .fold {
  margin-top: 26px;
  border-top: 1px solid var(--rule-dark);
}

.page-about .about-reach .fold__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  width: 100%;
  padding: 14px 0;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--rule-dark);
  color: var(--c-warm);
  font-family: var(--font-sans);
  font-size: var(--fs-14);
  text-align: left;
  cursor: pointer;
}

.page-about .about-reach .fold__head .mono {
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--c-turquoise-lt);
}

.page-about .about-reach .fold__body {
  padding: 16px 0 4px;
}

.page-about .about-reach .fold__body p {
  margin: 0;
  max-width: 38em;
  font-size: var(--fs-14);
  line-height: 1.9;
  color: #C4CCD4;
}

/* 数字索引 */

.page-about .about-reach__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 34px 0 0;
  border-top: 1px solid var(--rule-dark);
}

.page-about .about-stat {
  padding: 20px 14px 20px 0;
  border-bottom: 1px solid var(--rule-dark);
}

.page-about .about-stat:nth-child(odd) {
  border-right: 1px solid var(--rule-dark);
}

.page-about .about-stat:nth-child(even) {
  padding-left: 16px;
}

.page-about .about-stat__label {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--c-mist);
  margin-bottom: 8px;
}

.page-about .about-stat__num {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.6rem, 5vw, 2.25rem);
  line-height: 1.1;
  color: var(--c-warm);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat__num--text {
  font-size: var(--fs-20);
  font-weight: 600;
}

/* ---------- 04 权益分层 ---------- */

.page-about .about-rights {
  background-color: var(--c-warm);
}

.page-about .about-rights__grid {
  display: grid;
  gap: 34px;
}

.page-about .about-rights__intro .prose + .prose {
  margin-top: 16px;
}

.page-about .about-rights__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
}

.page-about .about-rights__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--rule-strong);
}

.page-about .about-rights__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}

.page-about .about-rights__num {
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--c-moss);
  font-variant-numeric: tabular-nums;
  padding-top: 4px;
}

.page-about .about-rights__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fs-16);
  margin: 0 0 5px;
}

.page-about .about-rights__item p {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-sub);
}

/* ---------- 05 服务怎么走 ---------- */

.page-about .about-flow {
  background-color: var(--c-sand);
  background-image: var(--paper);
}

.page-about .about-flow__track {
  height: 46px;
  color: var(--c-terracotta);
  opacity: 0.7;
  margin-bottom: -12px;
}

.page-about .about-flow__track svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .about-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--rule-strong);
}

.page-about .about-flow__step {
  position: relative;
  padding: 22px 0 22px 26px;
  border-bottom: 1px solid var(--rule);
}

.page-about .about-flow__dot {
  position: absolute;
  left: 0;
  top: 28px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--c-cinnabar);
}

.page-about .about-flow__num {
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: var(--c-cinnabar);
  font-variant-numeric: tabular-nums;
}

.page-about .about-flow__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fs-20);
  margin: 6px 0 8px;
}

.page-about .about-flow__step p {
  margin: 0;
  max-width: 38em;
  font-size: var(--fs-14);
  line-height: 1.9;
  color: var(--text-sub);
}

.page-about .about-flow__note {
  margin: 28px 0 0;
  padding: 16px 18px;
  background-color: var(--c-warm);
  border-left: 2px solid var(--c-turquoise);
  font-size: var(--fs-14);
  line-height: 1.9;
  color: var(--text-sub);
}

.page-about .about-flow__note a {
  color: var(--c-turquoise);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 结尾引导 ---------- */

.page-about .about-cta {
  padding: 56px 0 66px;
  background-color: var(--c-mist);
  background-image:
    repeating-linear-gradient(0deg, rgba(30, 42, 56, 0.05) 0 1px, transparent 1px 5px);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 26px;
}

.page-about .about-cta .eyebrow {
  color: var(--c-ink);
  letter-spacing: 0.2em;
  opacity: 0.7;
}

.page-about .about-cta__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.6vw, 1.95rem);
  line-height: 1.35;
  margin: 8px 0 12px;
  color: var(--c-ink);
}

.page-about .about-cta__text .prose {
  color: #2B3947;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
}

/* ---------- 响应式：≥ 720px ---------- */

@media (min-width: 720px) {
  .page-about .about-hero {
    padding-top: 30px;
  }

  .page-about .about-toc {
    gap: 14px;
    margin-top: 40px;
  }

  .page-about .section {
    padding-top: 76px;
    padding-bottom: 76px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 66px minmax(0, 1fr);
    gap: 22px;
    padding: 28px 4px;
  }

  .page-about .about-timeline__num {
    width: 42px;
    height: 42px;
    font-size: var(--fs-16);
  }

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

  .page-about .about-stat:nth-child(odd) {
    border-right: 0;
  }

  .page-about .about-stat:nth-child(even) {
    padding-left: 0;
  }

  .page-about .about-stat + .about-stat {
    padding-left: 20px;
    border-left: 1px solid var(--rule-dark);
  }

  .page-about .about-stat:nth-child(2n) {
    padding-left: 20px;
  }

  .page-about .about-flow__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 30px;
  }

  .page-about .about-flow__step:nth-child(odd) {
    border-right: 1px solid var(--rule);
    padding-right: 26px;
  }

  .page-about .about-flow__step:nth-child(even) {
    padding-left: 30px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: end;
    gap: 34px;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

/* ---------- 响应式：≥ 1000px ---------- */

@media (min-width: 1000px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.35fr);
    align-items: end;
    gap: 44px;
  }

  .page-about .about-hero__figure .figure__img {
    aspect-ratio: 2 / 1;
  }

  .page-about .about-stages__grid {
    grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-reach__figure {
    order: 0;
  }

  .page-about .about-rights__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-flow__track {
    height: 62px;
    margin-bottom: 4px;
  }

  .page-about .about-flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: 0;
    border-top: 0;
  }

  .page-about .about-flow__step {
    padding: 24px 22px 26px;
    border-top: 1px solid var(--rule-strong);
    border-bottom: 1px solid var(--rule);
  }

  .page-about .about-flow__step:nth-child(odd) {
    border-right: 1px solid var(--rule);
    padding-right: 22px;
  }

  .page-about .about-flow__step:nth-child(even) {
    padding-left: 22px;
  }

  .page-about .about-flow__step:not(:last-child) {
    border-right: 1px solid var(--rule);
  }

  .page-about .about-flow__step + .about-flow__step {
    padding-left: 22px;
  }

  .page-about .about-flow__step:first-child {
    padding-left: 0;
  }
}

/* ---------- 减少动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc__link,
  .page-about .about-timeline__item,
  .page-about .about-timeline__num {
    transition: none;
  }
}
<<<END>>>