.page-about {
  --about-hero-fs: clamp(40px, 7.4vw, 104px);
  --about-idx-w: 190px;
  --about-gold-soft: rgba(217, 166, 46, 0.14);
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  overflow-wrap: break-word;
}

.page-about a {
  color: inherit;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: var(--sp-4) var(--gutter) var(--sp-6);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 78% 14%, rgba(217, 166, 46, 0.18), transparent 46%),
    radial-gradient(circle at 8% 88%, rgba(47, 143, 120, 0.16), transparent 52%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 84px 84px;
  -webkit-mask-image: linear-gradient(155deg, #000 8%, transparent 68%);
  mask-image: linear-gradient(155deg, #000 8%, transparent 68%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: 6%;
  z-index: -1;
  width: 46%;
  height: 62%;
  background: linear-gradient(135deg, rgba(210, 71, 54, 0.24), transparent 64%);
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  max-width: var(--shell);
  margin: 0 auto;
  display: grid;
  gap: var(--sp-4);
}

.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  letter-spacing: 0.14em;
  color: var(--slate);
  margin-bottom: var(--sp-4);
}

.page-about .about-crumb a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--gold-bright);
  border-bottom-color: var(--gold-bright);
}

.page-about .about-crumb span[aria-current] {
  color: var(--mist);
}

.page-about .about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 var(--sp-3);
  font-size: var(--fs-anno);
  letter-spacing: 0.24em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-about .about-eyebrow__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--about-gold-soft);
}

.page-about .about-hero__title {
  margin: 0 0 var(--sp-3);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--about-hero-fs);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--gold);
  -webkit-text-stroke: 0;
  position: relative;
}

.page-about .about-hero__title em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.12em;
  height: 6px;
  background: var(--cinnabar);
  transform: skewX(-18deg) scaleX(0.9);
  transform-origin: left center;
  opacity: 0.85;
}

.page-about .about-hero__lede {
  max-width: 56ch;
  margin: 0 0 var(--sp-4);
  font-size: var(--fs-lede);
  line-height: 1.8;
  color: var(--mist);
  opacity: 0.9;
}

.page-about .about-slices {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-slice {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--sp-3) var(--sp-2);
  background: var(--ink-2);
}

.page-about .about-slice__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 600;
  line-height: 1.15;
  color: var(--gold-bright);
}

.page-about .about-slice__label {
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--line-strong);
  background: var(--ink-3);
}

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

.page-about .about-hero__figure figcaption {
  padding: 10px var(--sp-2);
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-about .about-vert {
  display: none;
}

/* ---------- 正文骨架 ---------- */
.page-about .about-body {
  max-width: var(--shell);
  margin: 0 auto;
  padding: var(--sp-5) var(--gutter) var(--sp-7);
}

.page-about .about-index {
  margin-bottom: var(--sp-5);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: var(--sp-2) 0;
}

.page-about .about-index__title {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  letter-spacing: 0.22em;
  color: var(--slate);
  text-transform: uppercase;
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--mist);
  font-size: var(--fs-xs);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  border-color: var(--gold);
  background: var(--ink-3);
  color: var(--gold-bright);
}

.page-about .about-sec {
  position: relative;
  padding: var(--sp-5) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-sec__num {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.3em;
  color: var(--gold);
}

.page-about .about-sec__title {
  margin: 0 0 var(--sp-3);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-h2);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-about .about-sec__title::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin-top: var(--sp-2);
  background: linear-gradient(90deg, var(--gold), var(--cinnabar));
  transform: skewX(-24deg);
}

.page-about .about-sec__text {
  margin: 0 0 var(--sp-3);
  color: var(--mist);
  opacity: 0.86;
}

.page-about .about-sec__text a {
  color: var(--gold-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
}

.page-about .about-sec__text a:hover,
.page-about .about-sec__text a:focus-visible {
  color: var(--titan);
  border-bottom-color: var(--titan);
}

/* ---------- 平台定位数据 ---------- */
.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--sp-4);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-figure {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--sp-3) var(--sp-2);
  background: var(--ink-2);
  border-left: 3px solid var(--jade);
}

.page-about .about-figure__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--titan);
}

.page-about .about-figure__cap {
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--slate);
}

/* ---------- 服务范围 ---------- */
.page-about .about-scope {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-2);
}

.page-about .about-scope__item {
  position: relative;
  padding: var(--sp-3);
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-top: 2px solid var(--line-strong);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), background 0.25s var(--ease);
}

.page-about .about-scope__item::after {
  content: "";
  position: absolute;
  left: 0;
  top: -2px;
  width: 38%;
  height: 2px;
  background: var(--gold);
  transition: width 0.3s var(--ease);
}

.page-about .about-scope__item:hover {
  background: var(--ink-3);
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.page-about .about-scope__item:hover::after {
  width: 100%;
}

.page-about .about-scope__tag {
  display: inline-block;
  margin-bottom: 10px;
  font-size: var(--fs-anno);
  letter-spacing: 0.16em;
}

.page-about .about-scope__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.35;
  color: var(--mist);
}

.page-about .about-scope__text {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 图片 ---------- */
.page-about .about-media {
  margin: var(--sp-4) 0;
  position: relative;
  border: 1px solid var(--line-strong);
  background: var(--ink-2);
  overflow: hidden;
}

.page-about .about-media::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 84px;
  height: 4px;
  background: var(--gold);
  z-index: 1;
}

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

.page-about .about-media figcaption {
  padding: 10px var(--sp-2);
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--slate);
}

/* ---------- 校验流程 ---------- */
.page-about .about-steps {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: var(--sp-2);
  padding: var(--sp-3);
  background: var(--ink-2);
}

.page-about .about-step__idx {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--gold-bright);
}

.page-about .about-step__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  color: var(--mist);
}

.page-about .about-step__text {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0 0 0 var(--sp-3);
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), var(--cinnabar), rgba(236, 230, 218, 0.1));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 var(--sp-4) var(--sp-2);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--sp-3) + 1px);
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(217, 166, 46, 0.16);
}

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

.page-about .about-timeline__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  color: var(--jade);
}

.page-about .about-timeline__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.35;
  color: var(--mist);
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: var(--sp-2);
}

.page-about .about-team__card {
  padding: var(--sp-3);
  background: linear-gradient(160deg, var(--ink-3), var(--ink-2));
  border: 1px solid var(--line);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-about .about-team__card:hover {
  transform: translateY(-4px);
  border-color: var(--jade);
}

.page-about .about-team__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-about .about-team__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  color: var(--mist);
}

.page-about .about-team__text {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-2);
}

.page-about .about-partners__item {
  padding: var(--sp-3);
  border-left: 2px solid var(--cinnabar);
  background: var(--ink-2);
}

.page-about .about-partners__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  color: var(--mist);
}

.page-about .about-partners__item p {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 联系 ---------- */
.page-about .about-contact {
  margin: var(--sp-4) 0;
  padding: var(--sp-4) var(--sp-3);
  background: var(--paper);
  color: var(--ink);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-4);
  position: relative;
  overflow: hidden;
}

.page-about .about-contact::before {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 140px;
  height: 140px;
  border: 2px solid rgba(217, 166, 46, 0.5);
  border-radius: 50%;
  pointer-events: none;
}

.page-about .about-contact__title {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-h3);
  line-height: 1.3;
  color: var(--ink);
}

.page-about .about-contact__text {
  margin: 0 0 var(--sp-3);
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: #3A3F44;
}

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

.page-about .about-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 1px solid var(--ink);
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-btn--solid {
  background: var(--ink);
  color: var(--paper);
}

.page-about .about-btn--solid:hover,
.page-about .about-btn--solid:focus-visible {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  color: var(--titan);
}

.page-about .about-btn--line {
  background: transparent;
  color: var(--ink);
}

.page-about .about-btn--line:hover,
.page-about .about-btn--line:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.page-about .about-contact__list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(11, 13, 15, 0.16);
  border: 1px solid rgba(11, 13, 15, 0.16);
}

.page-about .about-contact__row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  padding: 11px var(--sp-2);
  background: var(--paper);
}

.page-about .about-contact__row dt {
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  letter-spacing: 0.1em;
  color: #6B6152;
  padding-top: 2px;
}

.page-about .about-contact__row dd {
  margin: 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--ink);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-about .about-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (min-width: 760px) {
  .page-about .about-scope {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-scope__item:nth-child(1),
  .page-about .about-scope__item:nth-child(2) {
    grid-column: span 3;
  }

  .page-about .about-scope__item:nth-child(3),
  .page-about .about-scope__item:nth-child(4),
  .page-about .about-scope__item:nth-child(5) {
    grid-column: span 2;
  }

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

  .page-about .about-step {
    grid-template-columns: minmax(0, 1fr);
    align-content: start;
    gap: var(--sp-2);
  }

  .page-about .about-contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    padding: var(--sp-5) var(--sp-4);
  }
}

@media (min-width: 900px) {
  .page-about .about-team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 1000px) {
  .page-about .about-hero {
    padding: var(--sp-5) var(--gutter) var(--sp-7);
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: var(--sp-5);
  }

  .page-about .about-vert {
    display: block;
    position: absolute;
    right: 18px;
    bottom: var(--sp-6);
    writing-mode: vertical-rl;
    font-size: var(--fs-anno);
    letter-spacing: 0.32em;
    color: var(--slate);
    opacity: 0.7;
  }

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

  .page-about .about-index {
    position: sticky;
    top: 96px;
    margin-bottom: 0;
    border-top: none;
    border-bottom: none;
    padding: 0;
    border-left: 1px solid var(--line);
    padding-left: var(--sp-3);
  }

  .page-about .about-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-about .about-index__link {
    border: none;
    background: transparent;
    padding: 8px 0;
    border-bottom: 1px solid var(--line-soft);
    width: 100%;
    font-size: var(--fs-sm);
    color: var(--slate);
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    background: transparent;
    color: var(--gold-bright);
    border-bottom-color: var(--gold);
  }

  .page-about .about-sec:first-child {
    border-top: none;
    padding-top: 0;
  }

  .page-about .about-sec {
    padding: var(--sp-6) 0;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-scope__item,
  .page-about .about-team__card,
  .page-about .about-btn,
  .page-about .about-media img {
    transition: none !important;
    transform: none !important;
  }
}
<<<END>>>