.page-about {
  background: var(--deep);
  color: var(--ink);
  overflow-x: hidden;
}

.page-about .container {
  width: min(var(--container), 100% - 32px);
  margin-inline: auto;
}

.page-about .about-h2 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.6vw, 38px);
  line-height: 1.22;
  letter-spacing: .005em;
  color: var(--ink);
}

.page-about .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-about .about-section-head {
  max-width: 760px;
  margin-bottom: 32px;
}

.page-about .about-section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

/* 侧边星点导航 */
.page-about .about-rail {
  display: none;
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding: clamp(96px, 15vw, 156px) 0 clamp(48px, 8vw, 88px);
  background:
    radial-gradient(ellipse 62% 52% at 10% 8%, rgba(108, 74, 182, .36), transparent 70%),
    radial-gradient(ellipse 48% 46% at 90% 6%, rgba(53, 208, 186, .16), transparent 72%),
    linear-gradient(180deg, var(--void) 0%, var(--deep) 70%, var(--deep) 100%);
  border-bottom: 2px solid var(--line);
}

.page-about .about-hero__title {
  margin: 18px 0 22px;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.14;
  letter-spacing: .012em;
  color: var(--ink);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 64ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__snap {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 2px solid var(--line);
  max-width: 760px;
}

.page-about .about-snap {
  display: grid;
  gap: 4px;
}

.page-about .about-snap dt {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.4vw, 32px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-snap dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

/* 定位 */
.page-about .about-position {
  padding: clamp(56px, 9vw, 104px) 0;
  background: var(--deep);
}

.page-about .about-position__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-position__copy p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
  max-width: 62ch;
}

.page-about .about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-about .about-triangle {
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 20px 20px 8px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-triangle__title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-about .about-tri {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  grid-template-areas:
    "idx name"
    "idx desc";
  align-items: center;
  column-gap: 14px;
  row-gap: 2px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  transition: color .2s var(--ease), transform .2s var(--ease);
}

.page-about .about-tri:hover,
.page-about .about-tri:focus-visible {
  color: var(--cyan);
  transform: translateX(3px);
}

.page-about .about-tri__idx {
  grid-area: idx;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 2px solid var(--violet);
  color: var(--cyan);
  font-size: 13px;
}

.page-about .about-tri__name {
  grid-area: name;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
}

.page-about .about-tri__desc {
  grid-area: desc;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
}

/* 历程 */
.page-about .about-track {
  padding: clamp(56px, 9vw, 104px) 0;
  background: linear-gradient(180deg, var(--deep) 0%, var(--void) 42%, var(--deep) 100%);
}

.page-about .about-track__figure {
  margin: 0 0 36px;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-about .about-track__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-about .about-track__list::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--violet), var(--cyan));
  opacity: .5;
}

.page-about .about-track__item {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.page-about .about-track__idx {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--violet);
  background: var(--void);
  color: var(--cyan);
  font-size: 13px;
  box-shadow: 0 0 0 6px var(--deep);
}

.page-about .about-track__card {
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 20px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-track__phase {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-about .about-track__h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.35;
  color: var(--ink);
}

.page-about .about-track__card p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 团队 */
.page-about .about-team {
  padding: clamp(56px, 9vw, 104px) 0;
  background: var(--deep);
}

.page-about .about-team__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-team__figure {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-about .about-team__chart {
  display: block;
  box-sizing: border-box;
  width: 100%;
  height: auto;
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 14px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-team__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-team__list li {
  position: relative;
  padding-left: 44px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-team__list .mono {
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

/* 覆盖 */
.page-about .about-scale {
  padding: clamp(56px, 9vw, 104px) 0;
  background: linear-gradient(180deg, var(--deep) 0%, var(--void) 100%);
}

.page-about .about-scale__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-scale__figure {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

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

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-stat {
  display: grid;
  gap: 6px;
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 16px 14px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.8vw, 30px);
  line-height: 1.1;
  color: var(--cyan);
}

.page-about .about-stat__num--gold {
  color: var(--gold);
}

.page-about .about-stat__unit {
  font-size: .5em;
  margin-left: 2px;
  color: var(--muted);
}

.page-about .about-stat__label {
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
}

.page-about .about-docs {
  margin-top: 28px;
  display: grid;
  gap: 12px;
}

.page-about .about-docs__card {
  display: grid;
  gap: 6px;
  border: 2px solid var(--line);
  border-left: 4px solid var(--gold);
  background: var(--panel);
  padding: 18px;
}

.page-about .about-docs__num {
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  color: var(--ink);
}

.page-about .about-docs__unit {
  font-size: .52em;
  margin-left: 2px;
  color: var(--muted);
}

.page-about .about-docs__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.page-about .about-docs__note {
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* 信任 */
.page-about .about-trust {
  padding: clamp(56px, 9vw, 104px) 0;
  background: var(--deep);
}

.page-about .about-trust__grid {
  display: grid;
  gap: 14px;
}

.page-about .about-trust__card {
  display: grid;
  gap: 10px;
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 22px 20px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-trust__idx {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 2px solid var(--violet);
  color: var(--cyan);
  font-size: 12px;
  border-radius: 50%;
}

.page-about .about-trust__h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.35;
  color: var(--ink);
}

.page-about .about-trust__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 生态 */
.page-about .about-partners {
  padding: clamp(56px, 9vw, 104px) 0 clamp(64px, 10vw, 116px);
  background: linear-gradient(180deg, var(--deep) 0%, var(--void) 100%);
}

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

.page-about .about-partner {
  display: grid;
  gap: 10px;
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 22px 20px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-partner__icon {
  display: block;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--cyan), var(--violet) 70%);
  box-shadow: 0 0 12px rgba(53, 208, 186, .45);
}

.page-about .about-partner__h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--ink);
}

.page-about .about-partner p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-outro {
  margin-top: 36px;
  padding: 26px 22px;
  border: 2px solid var(--line);
  border-left: 4px solid var(--cyan);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-about .about-outro p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 68ch;
}

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

/* 平板、桌面 */
@media (min-width: 720px) {
  .page-about .container {
    width: min(var(--container), 100% - 56px);
  }
  .page-about .about-hero__snap {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-trust__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-partners__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-docs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .about-position__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: 40px;
  }
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
    gap: 36px;
  }
  .page-about .about-scale__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: start;
    gap: 36px;
  }
  .page-about .about-track__list::before {
    left: 50%;
    transform: translateX(-50%);
  }
  .page-about .about-track__item {
    grid-template-columns: minmax(0, 1fr) 64px minmax(0, 1fr);
    gap: 0 26px;
    align-items: start;
  }
  .page-about .about-track__idx {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
  }
  .page-about .about-track__item:nth-child(odd) .about-track__card {
    grid-column: 3;
    grid-row: 1;
  }
  .page-about .about-track__item:nth-child(even) .about-track__card {
    grid-column: 1;
    grid-row: 1;
    text-align: right;
  }
  .page-about .about-track__item:nth-child(even) .about-track__phase {
    text-align: right;
  }
  .page-about .about-partners__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-about .about-rail {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .page-about .about-rail__dot {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 2px solid var(--line);
    background: var(--void);
    color: var(--muted);
    font-size: 11px;
    text-decoration: none;
    transition: border-color .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
  }
  .page-about .about-rail__dot:hover,
  .page-about .about-rail__dot:focus-visible {
    border-color: var(--cyan);
    color: var(--cyan);
    transform: translateX(-4px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tri,
  .page-about .about-rail__dot {
    transition: none;
  }
  .page-about .about-tri:hover,
  .page-about .about-tri:focus-visible,
  .page-about .about-rail__dot:hover,
  .page-about .about-rail__dot:focus-visible {
    transform: none;
  }
}
<<<END>>>