/* ===== 品牌概况页 · 叙事版式 ===== */

.page-about {
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about .shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---- 色块章节：靠色差切段，不用线 ---- */
.page-about .about-band {
  padding-block: var(--section-y);
}

.page-about .about-band--open {
  padding-block: var(--space-6) var(--section-y);
}

.page-about .about-band--alt {
  background: var(--color-surface-alt);
}

.page-about .about-band--primary {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-about .about-band--deep {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

@media (min-width: 62em) {
  .page-about .about-band {
    padding-block: var(--section-y-lg);
  }
  .page-about .about-band--open {
    padding-block: var(--space-8) var(--section-y-lg);
  }
}

/* ---- 面包屑 ---- */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-6);
}

.page-about .breadcrumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
  padding-inline: 2px;
  transition: background-color 120ms ease-out, color 120ms ease-out;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

/* ---- 开篇 ---- */
.page-about .about-open {
  display: grid;
  gap: var(--space-6);
}

.page-about .about-open__kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 var(--space-3);
}

.page-about .about-open__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: 0 0 var(--space-4);
  max-width: 16ch;
}

.page-about .about-open__lede {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.45;
  max-width: 40ch;
  margin: 0 0 var(--space-4);
}

.page-about .about-open__p {
  max-width: var(--measure);
  color: var(--color-ink-soft);
  margin: 0;
}

@media (min-width: 48em) {
  .page-about .about-open__title {
    font-size: var(--text-3xl);
  }
}

@media (min-width: 62em) {
  .page-about .about-open {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--space-8);
    align-items: end;
  }
  .page-about .about-open__figure {
    align-self: stretch;
  }
}

/* ---- 图片与展签 ---- */
.page-about .figure {
  position: relative;
  margin: 0;
  background: var(--color-surface-deep);
}

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

.page-about .figure__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: var(--space-1) var(--space-2);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.page-about .about-band--deep .figure__tag {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

/* ---- 编号章节头 ---- */
.page-about .about-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
  margin-bottom: var(--space-6);
}

.page-about .about-head__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 0.9;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

.page-about .about-head__kicker {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  max-width: 22ch;
}

@media (min-width: 48em) {
  .page-about .about-head__title {
    font-size: var(--text-xl);
  }
}

.page-about .about-band--primary .about-head__num {
  color: var(--color-primary-ink);
  opacity: 0.55;
}

.page-about .about-band--primary .about-head__kicker {
  color: var(--color-primary-ink);
  opacity: 0.7;
}

.page-about .about-band--deep .about-head__num {
  color: var(--color-contrast-accent);
  opacity: 1;
}

.page-about .about-band--deep .about-head__kicker {
  color: var(--color-contrast-ink);
  opacity: 0.6;
}

/* ---- 正文段落 ---- */
.page-about .about-text p {
  max-width: var(--measure);
  margin: 0 0 var(--space-3);
}

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

.page-about .about-text--foot {
  margin-top: var(--space-6);
}

.page-about .about-text--lead {
  margin-bottom: var(--space-6);
}

.page-about .about-band--primary .about-text p {
  color: var(--color-primary-ink);
  opacity: 0.92;
}

.page-about .about-text--on-primary {
  margin-top: var(--space-6);
}

/* ---- 内联链接 ---- */
.page-about .inline-link {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  transition: background-color 120ms ease-out, color 120ms ease-out;
}

.page-about .inline-link:hover,
.page-about .inline-link:focus-visible {
  background: var(--color-accent);
  color: var(--color-accent-ink);
  text-decoration-color: transparent;
}

.page-about .about-band--primary .inline-link:hover,
.page-about .about-band--primary .inline-link:focus-visible {
  background: var(--color-primary-ink);
  color: var(--color-primary);
}

.page-about .about-band--deep .inline-link:hover,
.page-about .about-band--deep .inline-link:focus-visible {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

/* ---- 来路：左侧阶段标记 + 右侧叙述 ---- */
.page-about .road {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .road__item {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-3);
  margin-inline: calc(var(--space-3) * -1);
  transition: background-color 120ms ease-out, color 120ms ease-out;
}

.page-about .road__mark {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-about .road__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.3;
  color: var(--color-ink);
}

.page-about .road__text {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-about .road__item:hover .road__title,
.page-about .road__item:hover .road__mark,
.page-about .road__item:hover .road__text {
  color: var(--color-primary-ink);
}

.page-about .road__item:hover {
  background: var(--color-primary);
}

.page-about .road__item:hover .road__mark {
  opacity: 0.72;
}

.page-about .road__item:hover .road__text {
  opacity: 0.88;
}

@media (min-width: 56em) {
  .page-about .road__item {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
    gap: var(--space-6);
    align-items: start;
    padding-inline: var(--space-4);
    margin-inline: calc(var(--space-4) * -1);
  }
}

/* ---- 九类字段 ---- */
.page-about .fields {
  display: grid;
  gap: var(--space-3);
  margin: 0;
}

.page-about .fields__row {
  padding-block: var(--space-2);
}

.page-about .fields__term {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: 1.3;
}

.page-about .fields__term::before {
  content: "";
  display: inline-block;
  width: var(--space-1);
  height: var(--space-1);
  margin-right: var(--space-2);
  background: var(--color-accent);
  vertical-align: 2px;
}

.page-about .fields__desc {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-soft);
}

@media (min-width: 48em) {
  .page-about .fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4) var(--space-6);
  }
}

@media (min-width: 72em) {
  .page-about .fields {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---- 规模台账（主色块上的竖向清单） ---- */
.page-about .ledger {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ledger__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: var(--space-1) var(--space-3);
  padding-block: var(--space-3);
}

.page-about .ledger__label {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: 1.3;
}

.page-about .ledger__value {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 0.86;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.page-about .ledger__note {
  grid-column: 1 / -1;
  font-size: var(--text-sm);
  line-height: 1.6;
  opacity: 0.78;
}

@media (min-width: 48em) {
  .page-about .ledger {
    max-width: 46em;
  }
  .page-about .ledger__label {
    font-size: var(--text-lg);
  }
}

/* ---- 团队 ---- */
.page-about .team-layout {
  display: grid;
  gap: var(--space-6);
}

.page-about .team-layout__figure {
  max-width: 34em;
}

.page-about .team-list {
  display: block;
}

.page-about .team-row {
  transition: background-color 120ms ease-out, color 120ms ease-out;
}

.page-about .team-row__summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-1);
  padding: var(--space-3) var(--space-3);
  margin-inline: calc(var(--space-3) * -1);
  cursor: pointer;
  list-style: none;
  transition: background-color 120ms ease-out, color 120ms ease-out;
}

.page-about .team-row__summary::-webkit-details-marker {
  display: none;
}

.page-about .team-row__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.2;
}

.page-about .team-row__role {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.page-about .team-row__summary:hover,
.page-about .team-row[open] .team-row__summary {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-about .team-row__summary:hover .team-row__role,
.page-about .team-row[open] .team-row__summary .team-row__role {
  color: inherit;
  opacity: 0.78;
}

.page-about .team-row__body {
  padding: var(--space-2) 0 var(--space-4);
}

.page-about .team-row__body p {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

@media (min-width: 36em) {
  .page-about .team-row__summary {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-3);
    align-items: baseline;
  }
  .page-about .team-row__role {
    text-align: right;
  }
}

@media (min-width: 56em) {
  .page-about .team-layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: var(--space-8);
    align-items: start;
  }
}

/* ---- 场馆（深色章节） ---- */
.page-about .venue-figure {
  margin-bottom: var(--space-6);
}

.page-about .venue-notes {
  display: grid;
  gap: var(--space-6);
}

.page-about .venue-note__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.3;
  color: var(--color-contrast-ink);
}

.page-about .venue-note p {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

@media (min-width: 56em) {
  .page-about .venue-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-8);
  }
}

/* ---- 下一步出口 ---- */
.page-about .next-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .next-list__item + .next-list__item {
  margin-top: var(--space-1);
}

.page-about .next-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: baseline;
  padding: var(--space-3);
  margin-inline: calc(var(--space-3) * -1);
  text-decoration: none;
  color: inherit;
  transition: background-color 120ms ease-out, color 120ms ease-out;
}

.page-about .next-link__mark {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

.page-about .next-link__text {
  display: block;
}

.page-about .next-link__title {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.3;
}

.page-about .next-link__desc {
  display: block;
  margin-top: var(--space-1);
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-soft);
}

.page-about .next-link:hover,
.page-about .next-link:focus-visible {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-about .next-link:hover .next-link__mark,
.page-about .next-link:hover .next-link__desc,
.page-about .next-link:focus-visible .next-link__mark,
.page-about .next-link:focus-visible .next-link__desc {
  color: var(--color-accent-ink);
}

.page-about .next-link:hover .next-link__desc,
.page-about .next-link:focus-visible .next-link__desc {
  opacity: 0.86;
}

.page-about .about-cta {
  margin: var(--space-6) 0 0;
}

.page-about .btn {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  border: 0;
  border-radius: 0;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: 1.2;
}

.page-about .btn--solid {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  transition: background-color 120ms ease-out, color 120ms ease-out;
}

.page-about .btn--solid:hover,
.page-about .btn--solid:focus-visible {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

/* ---- 焦点可见性 ---- */
.page-about a:focus-visible,
.page-about summary:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}
<<<END>>>