.page-about {
  --about-gutter: clamp(20px, 5vw, 56px);
  --about-tick: 118px;
  display: block;
  background: var(--bg);
  color: var(--muted);
}

.page-about .breadcrumb {
  padding: 20px 0 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 5vw, 64px) 0 clamp(48px, 7vw, 96px);
  background:
    radial-gradient(90% 120% at 8% 0%, rgba(182, 255, 63, 0.1), transparent 58%),
    radial-gradient(70% 100% at 100% 100%, rgba(255, 138, 43, 0.12), transparent 62%),
    var(--bg);
  overflow: hidden;
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 60px);
  align-items: center;
}

.page-about .about-hero__copy h1 {
  font-size: clamp(2.1rem, 5.4vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 14px 0 20px;
}

.page-about .about-hero__copy .lede {
  max-width: 46ch;
  margin-bottom: 28px;
}

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

.page-about .about-hero__visual {
  position: relative;
  min-height: clamp(300px, 44vw, 420px);
  border-radius: var(--radius);
  background:
    linear-gradient(150deg, rgba(23, 36, 44, 0.92), rgba(13, 32, 25, 0.7) 55%, rgba(6, 18, 14, 0.95));
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(43, 61, 70, 0.65) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(43, 61, 70, 0.65) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(90% 80% at 30% 20%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(90% 80% at 30% 20%, #000 30%, transparent 100%);
}

.page-about .about-hero__visual::after {
  content: "";
  position: absolute;
  left: -20%;
  top: 18%;
  width: 140%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--lime), transparent);
  transform: rotate(-12deg);
  opacity: 0.85;
}

.page-about .about-hero__plate {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--glass);
  border: 1px solid rgba(43, 61, 70, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.page-about .about-hero__plate--a {
  left: 6%;
  top: 12%;
}

.page-about .about-hero__plate--b {
  right: 7%;
  top: 40%;
}

.page-about .about-hero__plate--c {
  left: 14%;
  bottom: 11%;
  border-color: rgba(255, 138, 43, 0.5);
}

.page-about .about-hero__plate-num {
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  color: var(--lime);
  line-height: 1;
}

.page-about .about-hero__plate--c .about-hero__plate-num {
  color: var(--orange);
}

.page-about .about-hero__plate-label {
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ---------- 平台定位 ---------- */
.page-about .about-origin {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-about .about-origin__copy p {
  max-width: 56ch;
  margin-bottom: 18px;
}

.page-about .about-origin__points {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  display: grid;
  gap: 12px;
}

.page-about .about-origin__points li {
  position: relative;
  padding-left: 26px;
  color: var(--num);
  font-size: 0.95rem;
}

.page-about .about-origin__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 14px;
  height: 2px;
  background: var(--lime);
}

.page-about .about-origin__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---------- 发展历程 ---------- */
.page-about .about-timeline {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-timeline__list {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: grid;
  gap: clamp(18px, 3vw, 34px);
}

.page-about .about-timeline__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.page-about .about-timeline__marker .num {
  display: inline-block;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  color: var(--lime);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-about .about-timeline__title {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--white);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.page-about .about-timeline__body p {
  max-width: 58ch;
  margin: 0;
}

.page-about .about-timeline__media {
  margin: clamp(28px, 5vw, 48px) 0 0;
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---------- 内容板块 ---------- */
.page-about .about-blocks {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-blocks__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 12px;
}

.page-about .about-block {
  position: relative;
  padding: 26px 24px 28px;
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(23, 36, 44, 0.72), rgba(13, 32, 25, 0.55));
  border: 1px solid var(--line);
}

.page-about .about-block h3 {
  margin: 14px 0 10px;
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  color: var(--white);
  letter-spacing: -0.01em;
}

.page-about .about-block p {
  margin: 0;
  max-width: 60ch;
}

.page-about .about-block--feature {
  background:
    linear-gradient(160deg, rgba(182, 255, 63, 0.14), rgba(23, 36, 44, 0.7) 46%, rgba(13, 32, 25, 0.6));
  border-color: rgba(182, 255, 63, 0.32);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-team__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
  margin-top: 10px;
}

.page-about .about-team__bars {
  display: grid;
  gap: 20px;
}

.page-about .about-team__bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}

.page-about .about-team__bar-name {
  font-weight: 800;
  color: var(--white);
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.page-about .about-team__bar-track {
  display: block;
  height: 10px;
  border-radius: 999px;
  background: rgba(43, 61, 70, 0.6);
  overflow: hidden;
}

.page-about .about-team__bar-track .bar__fill {
  background: linear-gradient(90deg, var(--lime-dim), var(--lime));
}

.page-about .about-team__bar-fill--orange {
  background: linear-gradient(90deg, #c96a1f, var(--orange)) !important;
}

.page-about .about-team__bar-fill--soft {
  background: linear-gradient(90deg, #d8a457, var(--orange-soft)) !important;
}

.page-about .about-team__bar-note {
  font-size: 0.86rem;
  color: var(--muted);
}

.page-about .about-team__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---------- 数据合作 ---------- */
.page-about .about-data {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-data__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-about .about-data__copy p {
  max-width: 54ch;
  margin-bottom: 16px;
}

.page-about .about-data__panel {
  padding: 26px 24px;
  border-radius: var(--radius);
  border: 1px solid rgba(43, 61, 70, 0.9);
}

.page-about .about-data__panel-title {
  margin: 0 0 18px;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.01em;
}

.page-about .about-data__metrics {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 16px;
}

.page-about .about-data__metrics li {
  position: relative;
  padding-left: 16px;
  font-size: 0.92rem;
  color: var(--num);
}

.page-about .about-data__metrics li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--lime-dim);
}

.page-about .about-data__refresh {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--num);
}

.page-about .about-data__dot--orange {
  background: var(--orange) !important;
}

/* ---------- 使用规模 ---------- */
.page-about .about-reach {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-reach__stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 12px;
}

.page-about .about-reach__stat {
  padding: 22px 20px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(23, 36, 44, 0.68), rgba(13, 32, 25, 0.5));
  border-left: 3px solid var(--lime);
}

.page-about .about-reach__stat:nth-child(2) {
  border-left-color: var(--orange);
}

.page-about .about-reach__stat:nth-child(3) {
  border-left-color: var(--orange-soft);
}

.page-about .about-reach__stat:nth-child(4) {
  border-left-color: var(--line);
}

.page-about .about-reach__value {
  display: block;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  color: var(--white);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.page-about .about-reach__label {
  font-size: 0.88rem;
  color: var(--muted);
}

.page-about .about-reach__note {
  margin: 28px 0 0;
  max-width: 68ch;
  padding-left: 18px;
  border-left: 2px solid var(--line);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding: clamp(46px, 6vw, 84px) 0 clamp(56px, 8vw, 104px);
}

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

.page-about .about-next__copy p {
  max-width: 52ch;
  margin: 0;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-blocks__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-block--feature {
    grid-column: 1 / -1;
  }

  .page-about .about-block--wide {
    grid-column: 1 / -1;
  }

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

  .page-about .about-timeline__item {
    grid-template-columns: var(--about-tick) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
    padding-left: 0;
    border-left: 0;
    position: relative;
  }

  .page-about .about-timeline__item::before {
    content: "";
    position: absolute;
    left: calc(var(--about-tick) + 13px);
    top: 0;
    bottom: calc(-1 * clamp(18px, 3vw, 34px));
    width: 1px;
    background: linear-gradient(180deg, rgba(182, 255, 63, 0.5), rgba(43, 61, 70, 0.35));
  }

  .page-about .about-timeline__item:last-child::before {
    display: none;
  }

  .page-about .about-timeline__marker {
    position: sticky;
    top: 96px;
    text-align: right;
  }

  .page-about .about-timeline__body {
    padding-left: 28px;
  }

  .page-about .about-team__bar {
    grid-template-columns: 108px minmax(0, 1fr) 168px;
    align-items: center;
    gap: 16px;
  }

  .page-about .about-team__bar-note {
    text-align: right;
  }
}

@media (min-width: 980px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-origin__media {
    margin-top: 12px;
  }

  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-about .about-data__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

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

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

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__plate,
  .page-about .about-reach__stat,
  .page-about .about-timeline__item,
  .page-about .about-block {
    transition: none !important;
    animation: none !important;
  }
}
```