/* ===== 关于 / 使命愿景 ===== */
.page-about {
  --about-gap: 108px;
  --about-stage-num: 72px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 48px 0 80px;
}

.page-about .about-hero::after {
  content: "";
  display: block;
  height: 1px;
  margin-top: 72px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--line-soft) 46%, transparent 100%);
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 40px;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 6.2vw, 66px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--warm-white);
  margin: 18px 0 0;
}

.page-about .about-hero__lead {
  max-width: 42em;
  margin-top: 26px;
  font-size: 17.5px;
  line-height: 1.9;
  color: var(--text-soft);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 52px 0 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-fact {
  background: var(--ink-blue);
  padding: 20px 18px 22px;
}

.page-about .about-fact dt {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-mute);
  margin-bottom: 10px;
}

.page-about .about-fact dd {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 26px;
  line-height: 1.1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

/* ---------- 01 我们做什么 ---------- */
.page-about .about-what__grid {
  display: grid;
  gap: 18px;
  margin-top: 52px;
}

.page-about .about-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 30px 26px 24px;
  background: rgba(232, 223, 204, 0.028);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: transform .28s var(--ease), border-color .28s var(--ease), background-color .28s var(--ease);
}

.page-about .about-card:hover,
.page-about .about-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: rgba(232, 223, 204, 0.055);
}

.page-about .about-card h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  line-height: 1.45;
  color: var(--warm-white);
  margin: 20px 0 12px;
}

.page-about .about-card p {
  flex: 1;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-soft);
  margin: 0 0 20px;
}

.page-about .about-card__link {
  align-self: flex-start;
  font-size: 14px;
  font-weight: 500;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-card__link:hover,
.page-about .about-card__link:focus-visible {
  color: var(--gold-lit);
  border-bottom-color: var(--gold-lit);
}

/* ---------- 02 运营阶段 ---------- */
.page-about .about-stages__layout {
  display: grid;
  gap: 48px;
  margin-top: 56px;
}

.page-about .about-stages__track {
  position: relative;
  padding-left: 32px;
}

.page-about .about-stages__track::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 30px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--gold-line) 58%, transparent 100%);
}

.page-about .about-stage {
  position: relative;
  padding: 0 0 48px;
}

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

.page-about .timeline__dot {
  position: absolute;
  left: -37px;
  top: 14px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold-line);
  box-shadow: 0 0 0 4px var(--ink-blue);
  transition: background .35s var(--ease), box-shadow .35s var(--ease);
}

.page-about .about-stage.is-visible .timeline__dot {
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--ink-blue), 0 0 14px 0 rgba(217, 169, 76, 0.55);
}

.page-about .about-stage__marker {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
}

.page-about .about-stage__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 44px;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: rgba(217, 169, 76, 0.26);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stage__year {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  border: 1px solid var(--line-soft);
  padding: 4px 10px;
  border-radius: 1px;
  white-space: nowrap;
}

.page-about .about-stage__body h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  line-height: 1.4;
  color: var(--warm-white);
  margin: 0 0 10px;
}

.page-about .about-stage__body p {
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--text-soft);
  margin: 0;
}

.page-about .about-stage__glance {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-top: 14px;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--gold-lit);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity .22s var(--ease), transform .22s var(--ease);
}

.page-about .about-stage__glance span::before {
  content: "·";
  margin-right: 6px;
  color: var(--gold-line);
}

.page-about .about-stage:hover .about-stage__glance,
.page-about .about-stage:focus-visible .about-stage__glance,
.page-about .about-stage:focus-within .about-stage__glance {
  opacity: 0.95;
  transform: none;
}

.page-about .about-stages__figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line-soft);
  background: rgba(15, 46, 51, 0.42);
}

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

.page-about .about-stages__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mute);
}

/* ---------- 03 团队构成 ---------- */
.page-about .about-team__figure {
  margin: 52px 0 0;
  padding: 10px;
  border: 1px solid var(--line-soft);
  background: rgba(232, 223, 204, 0.028);
}

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

.page-about .about-team__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mute);
}

.page-about .about-team__grid {
  display: grid;
  gap: 14px;
  margin-top: 36px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.page-about .about-member {
  padding: 24px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(15, 46, 51, 0.34);
  outline: none;
  transition: border-color .22s var(--ease), transform .22s var(--ease), background-color .22s var(--ease);
}

.page-about .about-member:hover,
.page-about .about-member:focus-visible {
  border-color: var(--gold-lit);
  transform: translateY(-3px);
  background: rgba(15, 46, 51, 0.55);
}

.page-about .about-member__count {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 36px;
  line-height: 1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  margin-bottom: 12px;
}

.page-about .about-member h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  color: var(--warm-white);
  margin: 0 0 8px;
}

.page-about .about-member p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-soft);
  margin: 0;
}

.page-about .about-support {
  display: grid;
  gap: 22px;
  margin-top: 40px;
  padding: 30px 26px;
  border-left: 2px solid var(--gold);
  background: rgba(58, 46, 99, 0.24);
}

.page-about .about-support__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 64px;
  line-height: 0.9;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-about .about-support__cap {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--text-mute);
}

.page-about .about-support__text p {
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--text-soft);
  margin: 0;
}

.page-about .about-support__text p + p {
  margin-top: 14px;
}

/* ---------- 04 内容生产流程 ---------- */
.page-about .about-flow__layout {
  display: grid;
  gap: 44px;
  margin-top: 52px;
}

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

.page-about .about-flow__step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 18px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-flow__step:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-flow__index {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  padding-top: 5px;
}

.page-about .about-flow__body h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
  color: var(--warm-white);
  margin: 0 0 8px;
}

.page-about .about-flow__body p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
  margin: 0;
}

.page-about .about-flow__figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line-soft);
  background: rgba(232, 223, 204, 0.028);
}

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

.page-about .about-flow__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mute);
}

.page-about .about-rules {
  margin-top: 30px;
}

.page-about .about-rules__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  color: var(--warm-white);
  margin: 0;
}

.page-about .about-rules__list {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 16px 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-rules__list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: var(--ink-blue);
  font-size: 15px;
  color: var(--warm-white);
}

.page-about .about-rules__list li span {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-about .about-rules__note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-mute);
}

/* ---------- 05 合作生态 ---------- */
.page-about .about-eco__partners {
  display: grid;
  gap: 16px;
  margin-top: 52px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.page-about .about-partner {
  padding: 26px 22px 24px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(232, 223, 204, 0.024);
  transition: transform .26s var(--ease), border-color .26s var(--ease);
}

.page-about .about-partner:hover,
.page-about .about-partner:focus-within {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.page-about .about-partner h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.45;
  color: var(--warm-white);
  margin: 18px 0 10px;
}

.page-about .about-partner p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-soft);
  margin: 0;
}

.page-about .about-eco__seals {
  display: grid;
  gap: 12px;
  margin-top: 44px;
  grid-template-columns: 1fr;
}

.page-about .about-seal {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 190px;
  padding: 30px 18px;
  color: var(--gold-line);
  outline: none;
  transition: color .25s var(--ease), transform .25s var(--ease);
}

.page-about .about-seal:hover,
.page-about .about-seal:focus-visible {
  color: var(--gold);
  transform: translateY(-4px);
}

.page-about .about-seal__ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 148px;
  height: 148px;
  margin: -74px 0 0 -74px;
  color: inherit;
  opacity: 0.85;
  pointer-events: none;
}

.page-about .about-seal__value {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 25px;
  line-height: 1.1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-about .about-seal__label {
  position: relative;
  z-index: 1;
  max-width: 132px;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-soft);
}

.page-about .about-seal__source {
  position: relative;
  z-index: 1;
  max-width: 148px;
  margin-top: 0;
  max-height: 0;
  overflow: hidden;
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--text-mute);
  opacity: 0;
  transition: opacity .24s var(--ease), max-height .24s var(--ease), margin-top .24s var(--ease);
}

.page-about .about-seal:hover .about-seal__source,
.page-about .about-seal:focus-visible .about-seal__source {
  opacity: 1;
  max-height: 56px;
  margin-top: 8px;
}

/* ---------- 06 服务范围与联系 ---------- */
.page-about .about-contact__layout {
  display: grid;
  gap: 36px;
  margin-top: 52px;
}

.page-about .about-contact__copy p {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--text-soft);
  margin: 0;
}

.page-about .about-contact__copy p + p {
  margin-top: 16px;
}

.page-about .about-contact__list {
  display: grid;
  gap: 1px;
  margin: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-contact__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  background: var(--ink-blue);
  padding: 16px 20px;
}

.page-about .about-contact__row dt {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-mute);
}

.page-about .about-contact__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--warm-white);
  word-break: break-word;
}

.page-about .about-contact__note {
  margin: 28px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-mute);
}

.page-about .about-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-eco__seals {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-contact__row {
    grid-template-columns: 130px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 860px) {
  .page-about .about-what__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-about .about-card:nth-child(1) { grid-column: span 7; }
  .page-about .about-card:nth-child(2) { grid-column: span 5; }
  .page-about .about-card:nth-child(3) { grid-column: span 5; }
  .page-about .about-card:nth-child(4) { grid-column: span 7; }

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

  .page-about .about-support {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 44px;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero {
    padding: 72px 0 96px;
  }

  .page-about .about-stages__layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-stage {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 0 26px;
    padding-bottom: 52px;
  }

  .page-about .about-stage__marker {
    margin-bottom: 0;
  }

  .page-about .about-stage__num {
    font-size: var(--about-stage-num);
  }

  .page-about .about-stage__glance {
    grid-column: 2;
  }

  .page-about .about-flow__layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 56px;
  }

  .page-about .about-contact__layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-about .about-stages__aside {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-card,
  .page-about .about-member,
  .page-about .about-partner,
  .page-about .about-seal,
  .page-about .about-stage__glance,
  .page-about .timeline__dot {
    transition: none;
  }
}
<<<END>>>