.page-about {
  --about-line: rgba(155, 176, 166, .22);
  --about-glass: rgba(42, 74, 64, .3);
  --about-paper-ink: #1A2A24;
  display: block;
  background: var(--ink);
  color: var(--text);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: clamp(16px, 2.4vw, 28px);
}

.page-about .breadcrumb__sep {
  margin: 0 8px;
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(22px, 3.6vw, 42px) 0 clamp(44px, 6vw, 84px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(118deg, rgba(198, 255, 61, .06) 0 25%, transparent 25.2%),
    radial-gradient(1100px 520px at 82% -12%, rgba(61, 139, 255, .14), transparent 62%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-about .about-hero__copy h1 {
  margin: clamp(10px, 1.6vw, 18px) 0 clamp(16px, 2vw, 24px);
  font-size: clamp(34px, 6.6vw, 68px);
  line-height: 1.05;
  letter-spacing: -.025em;
  color: var(--cream-2);
}

.page-about .about-hero__copy .lede {
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 16.5px);
  line-height: 1.78;
  color: var(--text-soft);
}

.page-about .about-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

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

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

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

/* ---------- 起点 ---------- */
.page-about .about-origin,
.page-about .about-audience,
.page-about .about-team,
.page-about .about-timeline,
.page-about .about-reach,
.page-about .about-partner,
.page-about .about-cta {
  position: relative;
  padding: clamp(44px, 6.5vw, 88px) 0;
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 38px);
}

.page-about .about-origin__head h2 {
  margin-top: 10px;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--cream-2);
}

.page-about .about-origin__body p {
  margin: 0 0 20px;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.86;
  color: var(--text-soft);
}

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

.page-about .about-origin__body p + p {
  border-top: 1px solid var(--about-line);
  padding-top: 20px;
}

/* ---------- 服务人群 ---------- */
.page-about .about-audience__head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-about .about-audience__head h2 {
  margin: 10px 0 12px;
  font-size: clamp(25px, 3.4vw, 42px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--cream-2);
}

.page-about .about-audience__head .lede {
  color: var(--text-soft);
  line-height: 1.78;
}

.page-about .about-audience__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .who-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--ink-2);
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--lime);
  border-radius: var(--radius);
  transition: transform .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-about .who-card:hover {
  transform: translateY(-4px);
  background: var(--ink-3);
  border-color: var(--edge-soft);
  border-left-color: var(--lime);
}

.page-about .about-audience__grid > :nth-child(2) { border-left-color: var(--amber); }
.page-about .about-audience__grid > :nth-child(3) { border-left-color: var(--blue); }
.page-about .about-audience__grid > :nth-child(4) { border-left-color: var(--lime-deep); }

.page-about .who-card__idx {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--mist);
}

.page-about .who-card h3 {
  margin: 0;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.3;
  color: var(--cream-2);
}

.page-about .who-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-about .who-card__tags {
  margin-top: auto;
  padding-top: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 团队 ---------- */
.page-about .about-team__head {
  max-width: 66ch;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-about .about-team__head h2 {
  margin: 10px 0 12px;
  font-size: clamp(25px, 3.4vw, 42px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--cream-2);
}

.page-about .about-team__head .lede {
  color: var(--text-soft);
  line-height: 1.78;
}

.page-about .about-team__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 44px);
  align-items: start;
}

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

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

.page-about .about-team__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .team-card {
  position: relative;
  padding: 20px;
  background: var(--about-glass);
  border: 1px solid var(--edge-soft);
  border-radius: var(--radius);
  backdrop-filter: blur(6px);
  transition: transform .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--lime);
  background: rgba(42, 74, 64, .46);
}

.page-about .team-card__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .team-card__name {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--cream-2);
}

.page-about .team-card__num {
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--lime);
}

.page-about .team-card__num small {
  margin-left: 3px;
  font-size: 12px;
  color: var(--mist);
}

.page-about .team-card__duty {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

.page-about .about-timeline__aside h2 {
  margin: 10px 0 clamp(20px, 2.6vw, 28px);
  font-size: clamp(25px, 3.4vw, 42px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--cream-2);
}

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

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

.page-about .about-timeline__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(26px, 3.4vw, 40px);
}

.page-about .about-timeline__nav a {
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-soft);
  text-decoration: none;
  border: 1px solid var(--edge-soft);
  border-radius: var(--radius);
  transition: background .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}

.page-about .about-timeline__nav a:hover,
.page-about .about-timeline__nav a:focus-visible {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.page-about .about-timeline__list {
  position: relative;
  max-width: 880px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 30px;
  width: 1px;
  background: linear-gradient(180deg, var(--amber) 0%, var(--lime) 62%, var(--edge-soft) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(26px, 3.4vw, 40px) 40px;
  scroll-margin-top: 120px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 7px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 5px rgba(255, 176, 32, .13);
}

.page-about .about-timeline__item--lime::before {
  background: var(--lime);
  box-shadow: 0 0 0 5px rgba(198, 255, 61, .13);
}

.page-about .about-timeline__when {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-about .about-timeline__item h3 {
  margin: 0 0 8px;
  font-size: clamp(19px, 2.3vw, 25px);
  line-height: 1.3;
  color: var(--cream-2);
}

.page-about .about-timeline__item p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-soft);
}

.page-about .about-timeline__item .about-timeline__when {
  font-size: 12px;
  line-height: 1.6;
  max-width: none;
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-reach__head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-about .about-reach__head h2 {
  margin: 10px 0 12px;
  font-size: clamp(25px, 3.4vw, 42px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--cream-2);
}

.page-about .about-reach__head .lede {
  color: var(--text-soft);
  line-height: 1.78;
}

.page-about .about-reach__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
}

.page-about .reach-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  background: var(--ink-2);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-about .reach-card:hover {
  transform: translateY(-3px);
  border-color: var(--edge-soft);
}

.page-about .reach-card__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-about .reach-card__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.2vw, 36px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--lime);
}

.page-about .reach-card__v em {
  margin-left: 5px;
  font-style: normal;
  font-size: 14px;
  letter-spacing: 0;
  color: var(--text-soft);
}

.page-about .reach-card__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-about .reach-card__bar {
  display: block;
  height: 4px;
  margin-top: 12px;
  border-radius: 2px;
  background: rgba(155, 176, 166, .18);
  overflow: hidden;
}

.page-about .reach-card__bar i {
  display: block;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--lime-deep), var(--lime));
  transition: width .4s var(--ease);
}

.page-about .about-reach__grid > :nth-child(1) .reach-card__bar i { width: 88%; }
.page-about .about-reach__grid > :nth-child(2) .reach-card__bar i { width: 40%; }
.page-about .about-reach__grid > :nth-child(3) .reach-card__bar i { width: 58%; }
.page-about .about-reach__grid > :nth-child(4) .reach-card__bar i { width: 66%; }
.page-about .about-reach__grid > :nth-child(5) .reach-card__bar i { width: 78%; }
.page-about .about-reach__grid > :nth-child(6) .reach-card__bar i { width: 60%; }
.page-about .about-reach__grid > :nth-child(7) .reach-card__bar i { width: 72%; }

/* ---------- 合作与认可 ---------- */
.page-about .about-partner__box {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
  padding: clamp(26px, 4vw, 52px);
  border-radius: var(--radius);
  background: var(--cream);
  color: var(--about-paper-ink);
}

.page-about .about-partner__intro h2 {
  margin: 10px 0 14px;
  font-size: clamp(25px, 3.4vw, 42px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--about-paper-ink);
}

.page-about .about-partner__intro .eyebrow {
  color: rgba(26, 42, 36, .58);
}

.page-about .about-partner__intro p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(26, 42, 36, .76);
}

.page-about .partner-stats {
  display: grid;
  gap: 20px;
  padding-top: 22px;
  border-top: 1px solid rgba(26, 42, 36, .16);
}

.page-about .partner-stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-about .partner-stat .num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--ink-2);
}

.page-about .partner-stat p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(26, 42, 36, .72);
}

/* ---------- 结尾引导 ---------- */
.page-about .about-cta__box {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(24px, 3.6vw, 44px);
  border: 1px solid var(--edge-soft);
  border-radius: var(--radius);
  background:
    radial-gradient(600px 260px at 100% 0%, rgba(198, 255, 61, .1), transparent 68%),
    var(--ink-2);
}

.page-about .about-cta__box h2 {
  margin: 0 0 10px;
  font-size: clamp(23px, 3vw, 36px);
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--cream-2);
}

.page-about .about-cta__box p {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 700px) {
  .page-about .about-audience__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-about .about-partner__box {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: center;
  }

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

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    gap: clamp(36px, 5vw, 84px);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-team__layout {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: clamp(30px, 4vw, 56px);
  }

  .page-about .about-timeline__grid {
    grid-template-columns: minmax(0, .74fr) minmax(0, 1.26fr);
    gap: clamp(40px, 5vw, 80px);
    align-items: start;
  }

  .page-about .about-cta__box {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-about .about-audience__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-about .about-audience__grid > :nth-child(1) { grid-column: span 7; }
  .page-about .about-audience__grid > :nth-child(2) { grid-column: span 5; }
  .page-about .about-audience__grid > :nth-child(3) { grid-column: span 5; }
  .page-about .about-audience__grid > :nth-child(4) { grid-column: span 7; }
}

@media (min-width: 1400px) {
  .page-about .about-hero__side {
    display: block;
    position: absolute;
    top: 50%;
    left: 8px;
    transform: translateY(-50%);
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .26em;
    color: var(--mist);
    z-index: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .who-card,
  .page-about .team-card,
  .page-about .reach-card,
  .page-about .reach-card__bar i,
  .page-about .about-timeline__nav a {
    transition-duration: .01ms;
  }

  .page-about .who-card:hover,
  .page-about .team-card:hover,
  .page-about .reach-card:hover {
    transform: none;
  }
}
<<<END>>>