.page-about {
  --about-grain: repeating-linear-gradient(
    0deg,
    rgba(216, 255, 232, 0.035) 0 1px,
    transparent 1px 4px
  );
  display: block;
}

.page-about .about-wrap {
  padding-top: clamp(20px, 3.5vw, 40px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

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

.page-about .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  padding: clamp(22px, 4vw, 48px);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(198, 255, 74, 0.12), transparent 58%),
    linear-gradient(160deg, var(--panel-700) 0%, var(--ink-900) 72%);
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--about-grain);
  opacity: 0.55;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -34%;
  right: -20%;
  width: 64%;
  aspect-ratio: 1 / 1;
  background: conic-gradient(from 205deg, rgba(198, 255, 74, 0.16), transparent 44%);
  transform: rotate(12deg);
  z-index: -1;
  pointer-events: none;
}

.page-about .about-hero__ghost {
  position: absolute;
  right: clamp(4px, 1.6vw, 24px);
  bottom: -0.22em;
  font-family: var(--font-mono);
  font-size: clamp(5.5rem, 20vw, 14rem);
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: rgba(198, 255, 74, 0.055);
  pointer-events: none;
  user-select: none;
  z-index: -1;
}

.page-about .about-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: var(--step-micro);
  letter-spacing: 0.16em;
  color: var(--lime-400);
}

.page-about .about-hero__tick {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime-400);
  box-shadow: 0 0 0 4px rgba(198, 255, 74, 0.14);
  flex: none;
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.2vw, 3.5rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-about .about-hero h1 em {
  font-style: normal;
  color: var(--lime-400);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 48ch;
  color: var(--mint-200);
  font-size: var(--step-body);
  line-height: 1.85;
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--edge-500);
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-hero__facts li {
  background: var(--panel-700);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 600;
  line-height: 1;
  color: var(--lime-400);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__cap {
  font-size: var(--step-micro);
  letter-spacing: 0.06em;
  color: var(--fog-400);
}

.page-about .about-hero__figure {
  margin: 0;
  align-self: stretch;
}

/* ---------- 章节骨架 ---------- */
.page-about .about-section {
  margin-top: clamp(48px, 7vw, 88px);
}

.page-about .about-section .section-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .about-section__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-micro);
  letter-spacing: 0.14em;
  color: var(--fog-400);
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 13px;
  width: 1px;
  background: linear-gradient(
    to bottom,
    rgba(198, 255, 74, 0.6),
    var(--edge-500) 16%,
    var(--edge-500) 84%,
    transparent
  );
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 36px) 42px;
}

.page-about .timeline__node {
  position: absolute;
  left: 7px;
  top: 9px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--lime-400);
  box-shadow: 0 0 0 4px rgba(198, 255, 74, 0.1);
}

.page-about .timeline__card {
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--panel-700);
  border: 1px solid var(--edge-500);
  border-left: 2px solid var(--lime-400);
  border-radius: var(--radius);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.page-about .timeline__card:hover {
  background: var(--panel-600);
  border-color: var(--lime-300);
  transform: translateY(-2px);
}

.page-about .timeline__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.05em;
  color: var(--lime-400);
  font-variant-numeric: tabular-nums;
}

.page-about .timeline__title {
  margin: 0 0 8px;
  font-size: var(--step-h3);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-about .timeline__text {
  margin: 0;
  font-size: var(--step-small);
  line-height: 1.8;
  color: var(--mint-200);
}

.page-about .timeline__more {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--edge-500);
  font-size: var(--step-micro);
  line-height: 1.75;
  color: var(--fog-400);
}

.page-about .timeline__item--media {
  background: var(--ink-800);
  padding-top: 4px;
  padding-bottom: clamp(30px, 4vw, 44px);
}

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

/* ---------- 能力线 ---------- */
.page-about .about-caps {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-about .cap {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--panel-700);
  border: 1px solid var(--edge-500);
  border-top: 2px solid var(--lime-400);
  border-radius: var(--radius);
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .cap:hover {
  background: var(--panel-600);
  transform: translateY(-2px);
}

.page-about .cap__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.3rem);
  font-weight: 600;
  line-height: 1;
  color: var(--lime-400);
  font-variant-numeric: tabular-nums;
}

.page-about .cap__unit {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-micro);
  letter-spacing: 0.08em;
  color: var(--fog-400);
}

.page-about .cap__title {
  margin: 4px 0 0;
  font-size: var(--step-h3);
  font-weight: 600;
  color: var(--white);
}

.page-about .cap__text {
  margin: 0;
  font-size: var(--step-small);
  line-height: 1.8;
  color: var(--mint-200);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(20px, 3.5vw, 40px);
}

.page-about .about-team__copy p {
  margin: 0 0 16px;
  font-size: var(--step-small);
  line-height: 1.85;
  color: var(--mint-200);
}

.page-about .team-stats {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 1px;
  background: var(--edge-500);
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .team-stats li {
  background: var(--panel-700);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-about .team-stats__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1;
  color: var(--amber-500);
  font-variant-numeric: tabular-nums;
}

.page-about .team-stats__cap {
  font-size: var(--step-micro);
  letter-spacing: 0.05em;
  color: var(--fog-400);
}

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

/* ---------- 服务数据 ---------- */
.page-about .svc-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--edge-500);
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .svc-strip li {
  background: var(--panel-700);
  padding: clamp(16px, 2.4vw, 24px);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .svc-strip__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 1.95rem);
  font-weight: 600;
  line-height: 1;
  color: var(--lime-400);
  font-variant-numeric: tabular-nums;
}

.page-about .svc-strip__cap {
  font-size: var(--step-micro);
  line-height: 1.55;
  color: var(--fog-400);
}

.page-about .honor {
  margin-top: 18px;
  padding: clamp(20px, 3vw, 30px);
  border-left: 2px solid var(--amber-500);
}

.page-about .honor__title {
  margin: 12px 0 10px;
  font-size: var(--step-h3);
  font-weight: 600;
  color: var(--white);
}

.page-about .honor__text {
  margin: 0;
  font-size: var(--step-small);
  line-height: 1.85;
  color: var(--mint-200);
}

/* ---------- 为什么选择 ---------- */
.page-about .why-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--edge-500);
}

.page-about .why-list__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--edge-500);
  align-items: start;
}

.page-about .why-list__idx {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  color: var(--lime-400);
  font-variant-numeric: tabular-nums;
  transition: color 0.2s var(--ease);
}

.page-about .why-list__item:hover .why-list__idx {
  color: var(--white);
}

.page-about .why-list__body h3 {
  margin: 0 0 8px;
  font-size: var(--step-h3);
  font-weight: 600;
  color: var(--white);
}

.page-about .why-list__body p {
  margin: 0;
  font-size: var(--step-small);
  line-height: 1.8;
  color: var(--mint-200);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  margin-top: clamp(48px, 7vw, 88px);
  padding: clamp(24px, 4vw, 44px);
  background: linear-gradient(140deg, var(--panel-600), var(--ink-900));
  border: 1px solid var(--edge-500);
  border-left: 2px solid var(--lime-400);
  border-radius: var(--radius);
}

.page-about .about-next h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .about-next__text {
  margin: 0;
  max-width: 56ch;
  font-size: var(--step-small);
  line-height: 1.85;
  color: var(--mint-200);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-next__save {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--edge-500);
  font-size: var(--step-micro);
  line-height: 1.75;
  color: var(--fog-400);
}

/* ---------- 延伸入口 ---------- */
.page-about .about-links {
  margin-top: clamp(32px, 5vw, 52px);
  display: grid;
  gap: 1px;
  background: var(--edge-500);
  border: 1px solid var(--edge-500);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-links__item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px 18px;
  background: var(--panel-700);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-links__item:hover,
.page-about .about-links__item:focus-visible {
  background: var(--panel-600);
  border-left-color: var(--lime-400);
}

.page-about .about-links__k {
  font-family: var(--font-mono);
  font-size: var(--step-micro);
  letter-spacing: 0.12em;
  color: var(--lime-400);
}

.page-about .about-links__v {
  font-size: var(--step-small);
  color: var(--mint-200);
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-about .about-caps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

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

  .page-about .why-list__item {
    grid-template-columns: 70px minmax(0, 1fr);
    gap: 24px;
    padding: 24px 0;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }

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

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

  /* 时间轴转为中轴左右错位 */
  .page-about .timeline::before {
    left: 50%;
  }

  .page-about .timeline__item {
    width: 50%;
    padding: 0 0 clamp(30px, 4vw, 44px) 0;
  }

  .page-about .timeline__item--left {
    padding-right: clamp(28px, 3.5vw, 48px);
  }

  .page-about .timeline__item--right {
    margin-left: 50%;
    padding-left: clamp(28px, 3.5vw, 48px);
  }

  .page-about .timeline__item--left .timeline__node {
    left: auto;
    right: -7px;
  }

  .page-about .timeline__item--right .timeline__node {
    left: -7px;
  }

  .page-about .timeline__item--left .timeline__card {
    border-left: 1px solid var(--edge-500);
    border-right: 2px solid var(--lime-400);
  }

  .page-about .timeline__item--media {
    width: 100%;
    margin-left: 0;
    padding: clamp(6px, 1vw, 12px) 0 clamp(34px, 4vw, 50px);
    background: var(--ink-800);
  }
}

@media (min-width: 900px) and (hover: hover) {
  .page-about .timeline__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    padding-top: 0;
    border-top-color: transparent;
    transition: max-height 0.32s var(--ease), opacity 0.24s var(--ease),
      margin-top 0.32s var(--ease), padding-top 0.32s var(--ease),
      border-color 0.32s var(--ease);
  }

  .page-about .timeline__card:hover .timeline__more,
  .page-about .timeline__card:focus-within .timeline__more {
    max-height: 200px;
    opacity: 1;
    margin-top: 12px;
    padding-top: 10px;
    border-top-color: var(--edge-500);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__card,
  .page-about .cap,
  .page-about .about-links__item,
  .page-about .why-list__idx {
    transition: none;
  }

  .page-about .timeline__card:hover,
  .page-about .cap:hover {
    transform: none;
  }

  .page-about .timeline__more {
    max-height: none;
    opacity: 1;
    margin-top: 12px;
    padding-top: 10px;
    border-top-color: var(--edge-500);
  }
}
<<<END>>>