.page-about {
  background: var(--ink);
  color: var(--body-text);
  overflow-x: clip;
}

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

.page-about .section {
  padding-block: clamp(56px, 9vw, 104px);
}

/* ---------- 排版基元 ---------- */
.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.2vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--frost);
  margin: 0 0 18px;
}

.page-about .about-copy {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-text);
  margin: 0 0 14px;
}

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

.page-about .media-frame {
  margin: 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: linear-gradient(150deg, var(--char-2), var(--ink-2));
}

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

.page-about .media-frame__caption {
  font-family: var(--font-ui);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--dim-text);
  padding: 10px 14px 12px;
  margin: 0;
  border-top: 1px solid var(--line-soft);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(20px, 3vw, 34px) var(--gutter) clamp(48px, 7vw, 88px);
  background:
    radial-gradient(90% 120% at 88% -10%, rgba(53, 242, 208, 0.10), transparent 62%),
    radial-gradient(70% 90% at -5% 0%, rgba(139, 92, 246, 0.10), transparent 58%),
    var(--ink);
}

.page-about .about-hero__frame {
  position: relative;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(20px, 3.2vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(20, 27, 38, 0.72), rgba(7, 11, 18, 0.35));
  overflow: hidden;
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  width: min(320px, 52%);
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 58%, transparent);
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  inset-block-start: -90px;
  inset-inline-end: -90px;
  width: 260px;
  height: 260px;
  background: var(--teal);
  border-radius: 42% 58% 55% 45% / 48% 40% 60% 52%;
  opacity: 0.42;
  pointer-events: none;
}

.page-about .about-hero__bar {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-block-end: clamp(20px, 3vw, 34px);
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--dim-text);
}

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

.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .breadcrumb__sep {
  color: var(--steel);
}

.page-about .breadcrumb__current {
  color: var(--frost);
}

.page-about .about-hero__stamp {
  margin: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--steel);
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 6.4vw, 58px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--frost);
  margin: 0 0 18px;
}

.page-about .about-hero__lede {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--body-text);
  max-width: 56ch;
  margin: 0 0 26px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__actions .btn {
  font-family: var(--font-ui);
  letter-spacing: 0.05em;
}

.page-about .about-hero__media {
  min-height: 220px;
}

.page-about .about-hero__media img {
  height: 100%;
  min-height: 220px;
}

.page-about .about-hero__stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 14px;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding-block-start: clamp(20px, 3vw, 28px);
  border-top: 1px solid var(--line-soft);
}

.page-about .about-hero__stat dt {
  font-family: var(--font-ui);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim-text);
  margin-block-end: 6px;
}

.page-about .about-hero__stat dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: clamp(18px, 2.6vw, 24px);
  font-weight: 600;
  color: var(--cyan);
}

/* ---------- 01 场景 ---------- */
.page-about .about-why__grid {
  display: grid;
  gap: clamp(26px, 4vw, 56px);
}

.page-about .about-why__aside {
  border-left: 2px solid var(--cyan);
  padding-left: 20px;
}

.page-about .about-why__quote {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.3vw, 22px);
  line-height: 1.62;
  color: var(--frost);
  margin: 0 0 14px;
}

.page-about .about-why__note {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  margin: 0;
}

.page-about .about-principles {
  list-style: none;
  margin: clamp(32px, 5vw, 60px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-principles__card {
  position: relative;
  padding: 24px 20px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: linear-gradient(162deg, rgba(27, 36, 49, 0.92), rgba(10, 16, 25, 0.88));
  outline: none;
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .about-principles__card:hover,
.page-about .about-principles__card:focus-visible {
  border-color: rgba(53, 242, 208, 0.55);
  transform: translateY(-4px);
}

.page-about .about-principles__idx {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--violet);
  margin-block-end: 10px;
}

.page-about .about-principles__title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--frost);
  margin: 0 0 10px;
}

.page-about .about-principles__text {
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--body-text);
  margin: 0;
}

.page-about .about-principles__margin {
  font-family: var(--font-ui);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--mist);
  margin: 14px 0 0;
  padding-block-start: 12px;
  border-top: 1px dashed var(--line);
  opacity: 0.72;
  transition: opacity 0.3s var(--ease), color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .about-principles__card:hover .about-principles__margin,
.page-about .about-principles__card:focus-visible .about-principles__margin {
  opacity: 1;
  color: var(--cyan);
  transform: translateY(-2px);
}

/* ---------- 02 流程 ---------- */
.page-about .about-flow {
  background: linear-gradient(180deg, var(--ink) 0%, var(--char) 42%, var(--ink) 100%);
}

.page-about .about-flow__head {
  max-width: 66ch;
  margin-block-end: clamp(28px, 4vw, 44px);
}

.page-about .about-flow__grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: start;
}

.page-about .about-flow__media {
  align-self: stretch;
}

.page-about .about-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-flow__step {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(20, 27, 38, 0.66);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-about .about-flow__step[open] {
  border-color: rgba(53, 242, 208, 0.42);
  background: rgba(20, 27, 38, 0.95);
}

.page-about .about-flow__step summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-flow__step summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.page-about .about-flow__num {
  flex: none;
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-flow__label {
  flex: 1 1 auto;
  font-family: var(--font-ui);
  font-size: 16px;
  letter-spacing: 0.06em;
  color: var(--frost);
}

.page-about .about-flow__ind {
  position: relative;
  flex: none;
  width: 12px;
  height: 12px;
}

.page-about .about-flow__ind::before,
.page-about .about-flow__ind::after {
  content: "";
  position: absolute;
  background: var(--mist);
  border-radius: 1px;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
}

.page-about .about-flow__ind::before {
  inset-inline-start: 0;
  inset-block-start: 5px;
  width: 12px;
  height: 2px;
}

.page-about .about-flow__ind::after {
  inset-inline-start: 5px;
  inset-block-start: 0;
  width: 2px;
  height: 12px;
}

.page-about .about-flow__step[open] .about-flow__ind::before {
  background: var(--cyan);
}

.page-about .about-flow__step[open] .about-flow__ind::after {
  transform: scaleY(0);
}

.page-about .about-flow__panel {
  padding: 0 16px 18px 42px;
}

.page-about .about-flow__panel .about-copy {
  font-size: 14.5px;
  color: var(--body-text);
}

.page-about .about-flow__foot {
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: 18px 22px;
  border-left: 2px solid var(--violet);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(139, 92, 246, 0.09);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.82;
  color: var(--body-text);
}

/* ---------- 03 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-about .about-team__media {
  margin-block-start: clamp(20px, 3vw, 30px);
}

.page-about .about-team__roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-team__role {
  padding: 20px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(20, 27, 38, 0.62);
  transition: border-color 0.25s var(--ease);
}

.page-about .about-team__role:hover {
  border-color: rgba(53, 242, 208, 0.38);
}

.page-about .about-team__roleTitle {
  font-family: var(--font-ui);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--cyan);
  margin: 0 0 8px;
}

.page-about .about-team__role .about-copy {
  font-size: 14.5px;
  margin: 0;
}

/* ---------- 04 栏目 ---------- */
.page-about .about-channels {
  background:
    radial-gradient(70% 90% at 100% 0%, rgba(139, 92, 246, 0.10), transparent 60%),
    var(--ink-2);
}

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

.page-about .about-channels__list {
  display: grid;
  gap: 16px;
}

.page-about .about-channels__item {
  position: relative;
  padding: 24px 22px 22px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(168deg, rgba(27, 36, 49, 0.8), rgba(7, 11, 18, 0.6));
  overflow: hidden;
}

.page-about .about-channels__item::before {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  width: 46px;
  height: 2px;
  background: var(--cyan);
}

.page-about .about-channels__item:nth-child(2)::before {
  background: var(--violet);
}

.page-about .about-channels__item:nth-child(3)::before {
  background: var(--amber);
}

.page-about .about-channels__item:nth-child(4)::before {
  background: var(--orange);
}

.page-about .about-channels__tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.12em;
  margin-block-end: 12px;
}

.page-about .about-channels__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--frost);
  margin: 0 0 10px;
}

.page-about .about-channels__item .about-copy {
  font-size: 14.5px;
  margin-block-end: 16px;
}

.page-about .about-channels__link {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 208, 0.4);
  padding-block-end: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-channels__link:hover,
.page-about .about-channels__link:focus-visible {
  color: var(--frost);
  border-bottom-color: var(--frost);
}

/* ---------- 05 合作 ---------- */
.page-about .about-partner {
  background:
    radial-gradient(80% 120% at 8% 0%, rgba(53, 242, 208, 0.12), transparent 62%),
    linear-gradient(180deg, var(--ink-2) 0%, var(--teal) 68%, var(--ink) 100%);
}

.page-about .about-partner__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-about .about-partner__lead .about-copy {
  max-width: 52ch;
}

.page-about .about-partner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-block-start: 22px;
}

.page-about .about-partner__actions .btn {
  font-family: var(--font-ui);
  letter-spacing: 0.05em;
}

.page-about .about-partner__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-partner__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(7, 11, 18, 0.55);
  transition: border-color 0.25s var(--ease);
}

.page-about .about-partner__item:hover {
  border-color: rgba(255, 209, 102, 0.4);
}

.page-about .about-partner__item--note {
  border-color: rgba(255, 122, 26, 0.36);
  background: rgba(255, 122, 26, 0.08);
}

.page-about .about-partner__mark {
  font-family: var(--font-data);
  font-size: 13px;
  line-height: 1.7;
  color: var(--amber);
}

.page-about .about-partner__title {
  font-family: var(--font-ui);
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--frost);
  margin: 0 0 6px;
}

.page-about .about-partner__item .about-copy {
  font-size: 14px;
  line-height: 1.76;
  margin: 0;
}

/* ---------- 断点 ---------- */
@media (min-width: 680px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    align-items: stretch;
  }

  .page-about .about-flow__grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-about .about-partner__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-about .about-why__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.78fr);
    align-items: start;
  }

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

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

  .page-about .about-channels__item:nth-child(even) {
    margin-block-start: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-principles__card,
  .page-about .about-principles__margin,
  .page-about .about-flow__ind::before,
  .page-about .about-flow__ind::after,
  .page-about .about-team__role,
  .page-about .about-partner__item,
  .page-about .about-channels__link,
  .page-about .breadcrumb__link {
    transition-duration: 0.01ms;
  }

  .page-about .about-principles__card:hover,
  .page-about .about-principles__card:focus-visible,
  .page-about .about-principles__card:hover .about-principles__margin,
  .page-about .about-principles__card:focus-visible .about-principles__margin {
    transform: none;
  }
}
<<<EOF>>>