/* ===== 品牌中心 · 页面专属样式 ===== */
.page-about {
  --about-ink: var(--c-night);
  --about-soft: rgba(247, 244, 238, .72);
}

.page-about [id] {
  scroll-margin-top: calc(var(--header-h) + 20px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 22px) 0 var(--section-gap);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background:
    radial-gradient(118% 88% at 88% 6%, rgba(255, 176, 58, .52) 0%, rgba(255, 176, 58, 0) 58%),
    radial-gradient(96% 78% at 10% 102%, rgba(242, 101, 34, .42) 0%, rgba(242, 101, 34, 0) 60%),
    linear-gradient(148deg, #0E1B3D 0%, #17306b 44%, #4a2148 100%);
  color: var(--c-paper);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 232, 206, .22) .8px, transparent .8px);
  background-size: 14px 14px;
  opacity: .38;
  pointer-events: none;
}

.page-about .about-hero > .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(28px, 5vw, 56px);
  font-size: 14px;
  color: var(--about-soft);
}

.page-about .about-hero .breadcrumb__item {
  color: var(--about-soft);
  text-decoration: none;
}

.page-about .about-hero .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  opacity: .5;
}

.page-about .about-hero .breadcrumb__item[aria-current="page"] {
  color: var(--c-neon);
}

.page-about .about-hero .breadcrumb__item:hover {
  color: var(--c-neon);
  text-decoration: underline;
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
}

.page-about .about-hero__eyebrow {
  color: var(--c-sand);
  margin-bottom: 14px;
}

.page-about .about-hero__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(40px, 7vw, 92px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  margin: 0 0 22px;
  color: var(--c-paper);
  transform: skewX(-3deg);
  transform-origin: left bottom;
}

.page-about .about-hero__lead {
  max-width: 52ch;
  color: var(--about-soft);
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.85;
  margin: 0 0 28px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-hero__ghost {
  color: var(--c-paper);
  border-color: rgba(247, 244, 238, .5);
}

.page-about .about-hero__ghost:hover {
  border-color: var(--c-neon);
  color: var(--c-neon);
  background: rgba(255, 217, 102, .08);
}

/* 首屏索引 */
.page-about .about-index {
  border-top: 1px solid rgba(247, 244, 238, .26);
  padding-top: 20px;
}

.page-about .about-index__label {
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-sand);
  margin: 0 0 12px;
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  color: var(--c-paper);
  text-decoration: none;
  font-size: 16px;
  border-bottom: 1px dashed rgba(247, 244, 238, .16);
  transition: background .22s var(--ease), transform .22s var(--ease), color .22s var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  background: rgba(242, 101, 34, .26);
  color: var(--c-neon);
  transform: translateX(5px);
}

.page-about .about-index__num {
  font-size: 13px;
  color: var(--c-sand);
  flex: none;
}

/* ---------- 主场含义 ---------- */
.page-about .about-meaning__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .about-meaning__aside {
  border-left: 4px solid var(--c-sand);
  padding-left: 22px;
}

.page-about .about-meaning__quote {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--c-night);
  margin: 16px 0 16px;
  transform: skewX(-3deg);
  transform-origin: left top;
}

.page-about .about-meaning__note {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-graphite);
  margin: 0;
}

.page-about .about-meaning__linkline {
  margin: 26px 0 0;
}

.page-about .about-meaning__link {
  display: inline-block;
  font-weight: 700;
  color: var(--c-indy);
  text-decoration: none;
  border-bottom: 2px solid var(--c-sand);
  padding-bottom: 3px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-meaning__link:hover {
  color: var(--c-orange-deep);
  border-color: var(--c-orange-deep);
}

/* ---------- 发展阶段 ---------- */
.page-about .about-stages__head {
  max-width: 62ch;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-stages__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-about .about-stages__rail {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-stages__tick {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--c-white);
  border: 1px solid var(--c-line-strong);
  color: var(--c-night);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}

.page-about .about-stages__tick .mono {
  color: var(--c-orange-deep);
  font-size: 13px;
}

.page-about .about-stages__tick:hover,
.page-about .about-stages__tick:focus-visible {
  background: var(--c-orange-deep);
  color: var(--c-white);
  transform: translateY(-2px);
}

.page-about .about-stages__tick:hover .mono,
.page-about .about-stages__tick:focus-visible .mono {
  color: var(--c-neon);
}

.page-about .about-stages__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
  min-width: 0;
}

.page-about .about-stage {
  position: relative;
  overflow: hidden;
  border-left: 6px solid var(--c-orange);
}

.page-about .about-stage:nth-child(2) {
  border-left-color: var(--c-sand);
}

.page-about .about-stage:nth-child(3) {
  border-left-color: var(--c-indy);
}

.page-about .about-stage:nth-child(4) {
  border-left-color: var(--c-jade);
}

.page-about .about-stage .card__meta {
  color: var(--c-orange-deep);
  font-size: 13px;
  letter-spacing: .05em;
  margin: 0 0 10px;
}

.page-about .about-stage .card__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(19px, 2.1vw, 23px);
  line-height: 1.4;
  color: var(--c-night);
  margin: 0 0 12px;
}

.page-about .about-stage .card__body {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: #2c3552;
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
}

.page-about .about-team__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-about .about-donut {
  width: min(220px, 62vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: conic-gradient(
    var(--c-orange) 0 50%,
    var(--c-indy) 50% 77.8%,
    var(--c-jade) 77.8% 100%
  );
  display: grid;
  place-items: center;
  position: relative;
  box-shadow: var(--shadow-soft);
}

.page-about .about-donut::after {
  content: "";
  position: absolute;
  inset: 21%;
  border-radius: 50%;
  background: var(--c-paper);
}

.page-about .about-donut__hole {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 34px;
  font-weight: 500;
  line-height: 1.1;
  color: var(--c-night);
}

.page-about .about-donut__unit {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--c-graphite);
  letter-spacing: 0;
}

.page-about .about-donut__legend {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  width: 100%;
  max-width: 300px;
}

.page-about .about-donut__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  background: var(--c-dusk);
  font-size: 15px;
  color: var(--c-night);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .about-donut__item:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-soft);
}

.page-about .about-donut__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex: none;
}

.page-about .about-donut__dot--orange { background: var(--c-orange); }
.page-about .about-donut__dot--indy { background: var(--c-indy); }
.page-about .about-donut__dot--jade { background: var(--c-jade); }

.page-about .about-donut__name {
  flex: 1 1 auto;
}

.page-about .about-donut__num {
  font-size: 16px;
  font-weight: 500;
  color: var(--c-orange-deep);
}

.page-about .about-team__figure {
  margin: 8px 0 0;
}

/* ---------- 服务版图 ---------- */
.page-about .about-network {
  background: linear-gradient(178deg, #0E1B3D 0%, #12224c 62%, #1a3570 100%);
  border-radius: var(--radius-lg);
}

.page-about .about-network__head {
  max-width: 64ch;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .about-network__head .eyebrow {
  color: var(--c-sand);
}

.page-about .about-network__head .lead {
  color: var(--about-soft);
}

.page-about .about-network__figure {
  margin: 0 0 clamp(28px, 4vw, 48px);
}

.page-about .about-network__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.page-about .about-network__subtitle {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(20px, 2.2vw, 26px);
  color: var(--c-paper);
  margin: 0 0 14px;
}

.page-about .about-network__prose p {
  color: var(--about-soft);
}

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

.page-about .about-network__stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin: clamp(32px, 4vw, 48px) 0 0;
  padding: 0;
}

.page-about .about-stat {
  padding: 20px 24px;
  border-radius: var(--radius-md);
  background: rgba(255, 232, 206, .08);
  border: 1px solid rgba(255, 176, 58, .32);
}

.page-about .about-stat__label {
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--c-sand);
  margin-bottom: 8px;
}

.page-about .about-stat__value {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 500;
  color: var(--c-paper);
  line-height: 1;
}

.page-about .about-stat__unit {
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0;
  color: var(--about-soft);
}

/* ---------- 合作承诺 ---------- */
.page-about .about-promise__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.page-about .about-promise__intro .lead {
  max-width: 44ch;
}

.page-about .about-promise__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 26px;
}

.page-about .about-promise__textlink {
  color: var(--c-indy);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px dashed var(--c-line-strong);
  padding-bottom: 2px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-promise__textlink:hover {
  color: var(--c-orange-deep);
  border-color: var(--c-orange-deep);
}

.page-about .about-promise__list {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-about .about-pledge {
  background: var(--c-dusk);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  transition: box-shadow .22s var(--ease), transform .22s var(--ease);
}

.page-about .about-pledge:hover {
  box-shadow: var(--shadow-soft);
}

.page-about .about-pledge[open] {
  box-shadow: var(--shadow-lift);
  background: #FFEFDD;
}

.page-about .about-pledge__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 700;
  color: var(--c-night);
}

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

.page-about .about-pledge__summary:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.page-about .about-pledge__title {
  flex: 1 1 200px;
}

.page-about .about-pledge__sign {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--c-orange-deep);
  color: var(--c-white);
  font-size: 17px;
  line-height: 1;
  transition: transform .22s var(--ease), background .22s var(--ease);
}

.page-about .about-pledge[open] .about-pledge__sign {
  transform: rotate(45deg);
  background: var(--c-jade);
}

.page-about .about-pledge__body {
  margin: 14px 0 2px;
  font-size: 16px;
  line-height: 1.8;
  color: #2c3552;
  max-width: 64ch;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-network__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-stages__rail {
    flex-wrap: nowrap;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 88px);
    align-items: end;
  }

  .page-about .about-meaning__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 6vw, 96px);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-about .about-stages__grid {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-stages__rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .page-about .about-stages__tick {
    justify-content: flex-start;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(36px, 5vw, 80px);
    align-items: start;
  }

  .page-about .about-network__layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-about .about-promise__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(36px, 5vw, 80px);
  }

  .page-about .about-promise__intro {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}
<<<END>>>