.page-about {
  --about-body: rgba(244, 238, 220, 0.78);
  --about-card-pad: clamp(18px, 2.4vw, 28px);
  --about-gap: clamp(16px, 2.6vw, 30px);
  background: linear-gradient(180deg, rgba(11, 43, 36, 0.5), rgba(6, 31, 26, 0) 460px), var(--ink);
  color: var(--paper);
  padding-bottom: clamp(40px, 7vw, 90px);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line);
  padding: clamp(32px, 6vw, 74px) 0 clamp(26px, 5vw, 54px);
  background-image:
    linear-gradient(to right, rgba(46, 93, 75, 0.15) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 93, 75, 0.09) 1px, transparent 1px);
  background-size: 72px 72px, 72px 72px;
}

.page-about .about-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-about .about-hero__eyebrow .num {
  color: var(--gold);
  font-size: 13px;
}

.page-about .about-hero__title {
  margin: 18px 0 0;
  max-width: 17ch;
  font-size: clamp(34px, 6.2vw, 82px);
  font-weight: 200;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 30px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line-soft);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 12px;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-about .about-hero__facts .num {
  font-size: clamp(24px, 3.2vw, 34px);
  color: var(--gold);
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.page-about .about-hero__facts li > span:last-child {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ---------- 通用段落间距 ---------- */
.page-about .about-origin,
.page-about .about-lanes,
.page-about .about-era,
.page-about .about-team,
.page-about .about-eco,
.page-about .about-who,
.page-about .about-rhythm {
  padding-top: clamp(44px, 7vw, 94px);
}

/* ---------- 01 品牌缘起 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

.page-about .about-origin__text p {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-body);
}

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

/* ---------- 02 三条业务线 ---------- */
.page-about .lanes {
  display: grid;
  gap: var(--about-gap);
  margin-top: clamp(24px, 4vw, 42px);
}

.page-about .lane {
  padding: var(--about-card-pad);
  border: 1px solid var(--line);
  background: rgba(11, 43, 36, 0.72);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .lane:hover,
.page-about .lane:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-about .lane__idx {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .lane__title {
  margin: 10px 0 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-about .lane__body {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--about-body);
}

.page-about .lane__note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}

.page-about .lane:hover .lane__note,
.page-about .lane:focus-within .lane__note {
  color: var(--blue);
}

/* ---------- 03 版本年轮 ---------- */
.page-about .era {
  margin: clamp(24px, 4vw, 42px) 0 0;
  border-left: 1px solid var(--line-soft);
  padding-left: 22px;
  margin-left: 4px;
}

.page-about .era__item {
  position: relative;
  padding: 0 0 26px;
  transition: color var(--dur) var(--ease);
}

.page-about .era__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--forest-deep);
  border: 1px solid var(--moss);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .era__item:hover::before {
  background: var(--gold);
  border-color: var(--gold);
  box-shadow: 0 0 0 5px rgba(214, 168, 62, 0.14);
}

.page-about .era__year {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .era__ver {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--paper);
  border: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .era__item:hover .era__ver {
  border-color: var(--gold);
  color: var(--gold);
}

.page-about .era__item h3 {
  margin: 10px 0 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--paper);
}

.page-about .era__desc {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--about-body);
}

.page-about .about-era__figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

/* ---------- 04 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(22px, 4vw, 48px);
}

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

.page-about .about-team__lede {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .team-bars {
  margin-top: 26px;
  display: grid;
  gap: 13px;
}

.page-about .team-bar {
  display: grid;
  grid-template-columns: minmax(78px, 108px) minmax(0, 1fr) 32px;
  align-items: center;
  gap: 12px;
}

.page-about .team-bar__name {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.page-about .team-bar__track {
  display: block;
  height: 10px;
  background: rgba(46, 93, 75, 0.28);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, rgba(61, 168, 255, 0.5), var(--gold));
  transition: filter var(--dur) var(--ease);
}

.page-about .team-bar:hover .team-bar__fill {
  filter: brightness(1.2);
}

.page-about .team-bar:nth-child(1) .team-bar__fill { width: 43.75%; }
.page-about .team-bar:nth-child(2) .team-bar__fill { width: 28.1%; }
.page-about .team-bar:nth-child(3) .team-bar__fill { width: 15.6%; }
.page-about .team-bar:nth-child(4) .team-bar__fill { width: 12.5%; }

.page-about .team-bar__val {
  font-size: 14px;
  color: var(--paper);
  text-align: right;
}

.page-about .team-note {
  margin: 22px 0 0;
  padding: 14px 16px;
  border-left: 2px solid var(--gold);
  background: rgba(11, 43, 36, 0.6);
  font-size: 13px;
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .about-team__link {
  margin: 22px 0 0;
}

/* ---------- 05 合作生态 ---------- */
.page-about .eco {
  display: grid;
  gap: var(--about-gap);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .eco__group {
  position: relative;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
}

.page-about .eco__group::before {
  content: "";
  position: absolute;
  left: 0;
  top: -4px;
  width: 7px;
  height: 7px;
  background: var(--gold);
  transition: transform var(--dur) var(--ease);
}

.page-about .eco__group:hover::before {
  transform: scale(1.6);
}

.page-about .eco__count {
  margin: 0;
  font-size: clamp(30px, 4.4vw, 44px);
  line-height: 1;
  color: var(--gold);
  letter-spacing: 0.01em;
}

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

.page-about .eco__group .tag {
  margin-top: 10px;
}

.page-about .eco__desc {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .eco__honor {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-soft);
  font-size: 13px;
  line-height: 1.8;
  letter-spacing: 0.03em;
  color: var(--muted);
}

/* ---------- 06 服务对象 ---------- */
.page-about .who {
  list-style: none;
  margin: clamp(22px, 4vw, 38px) 0 0;
  padding: 0;
}

.page-about .who__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 4px 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .who__idx {
  grid-column: 1;
  grid-row: 1 / span 2;
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-about .who__item h3 {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.page-about .who__item:hover h3 {
  color: var(--gold);
}

.page-about .who__desc {
  grid-column: 2;
  grid-row: 2;
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-body);
}

/* ---------- 07 运营节奏 ---------- */
.page-about .about-rhythm__grid {
  display: grid;
  gap: clamp(22px, 4vw, 48px);
}

.page-about .about-rhythm__lede {
  margin: 16px 0 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-rhythm__actions {
  margin: 22px 0 0;
}

.page-about .rhythm-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .rhythm-list li {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .rhythm-list li:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .rhythm-list .num {
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  padding-top: clamp(44px, 7vw, 94px);
}

.page-about .about-cta__inner {
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(11, 43, 36, 0.92), rgba(6, 31, 26, 0.55));
  padding: clamp(24px, 4vw, 46px);
}

.page-about .about-cta__title {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

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

  .page-about .lane:nth-child(2) {
    margin-top: 42px;
  }

  .page-about .lane:nth-child(3) {
    margin-top: 84px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
  }

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

  .page-about .about-rhythm__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .who {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-about .who__item:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1000px) {
  .page-about .era {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    border-left: 0;
    border-top: 1px solid var(--line-soft);
    padding-left: 0;
    margin-left: 0;
  }

  .page-about .era__item {
    padding: 28px 18px 0 0;
  }

  .page-about .era__item::before {
    left: 0;
    top: -5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .lane,
  .page-about .lane__note,
  .page-about .era__item::before,
  .page-about .era__ver,
  .page-about .team-bar__fill,
  .page-about .eco__group::before,
  .page-about .who__item h3 {
    transition: none;
  }

  .page-about .lane:hover,
  .page-about .lane:focus-within {
    transform: none;
  }
}
<<<END>>>