.page-about {
  --about-rail: 208px;
  --about-gap: clamp(20px, 3.4vw, 40px);
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 2.4vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-about .about-mast {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4.4vw, 50px) 0 clamp(32px, 5.4vw, 64px);
  background: linear-gradient(158deg, var(--paper) 0%, var(--card) 60%, #EDF1EE 100%);
}

.page-about .about-mast::before {
  content: "";
  position: absolute;
  right: -14%;
  top: -30%;
  width: 58%;
  height: 168%;
  background: linear-gradient(165deg, rgba(15, 59, 62, .07), rgba(27, 58, 107, .14));
  clip-path: polygon(34% 0, 100% 0, 66% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-mast::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--warm-gold-soft) 24%, var(--warm-gold) 50%, var(--warm-gold-soft) 76%, transparent);
}

.page-about .about-mast__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 3.2vw, 34px);
}

.page-about .about-mast__scale {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
}

.page-about .about-mast__tick {
  position: relative;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--stone);
}

.page-about .about-mast__body h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(29px, 5.2vw, 50px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: .02em;
  color: var(--ink-teal);
}

.page-about .about-mast__body .lede {
  margin-top: clamp(14px, 2.4vw, 22px);
  max-width: 34em;
  font-size: clamp(16px, 1.6vw, 17.5px);
  line-height: 1.9;
  color: var(--ink);
}

.page-about .about-stats {
  margin-top: clamp(22px, 3.4vw, 34px);
}

@media (min-width: 880px) {
  .page-about .about-mast__grid {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 54px);
  }

  .page-about .about-mast__scale {
    position: relative;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: flex-start;
    justify-content: center;
    gap: 26px;
    padding-left: 16px;
  }

  .page-about .about-mast__scale::before {
    content: "";
    position: absolute;
    left: 0;
    top: 12%;
    bottom: 12%;
    width: 2px;
    background: linear-gradient(180deg, var(--warm-gold), rgba(212, 169, 74, .06));
  }

  .page-about .about-mast__tick::before {
    content: "";
    position: absolute;
    left: -19px;
    top: 50%;
    width: 6px;
    height: 6px;
    margin-top: -3px;
    background: var(--warm-gold);
    transform: rotate(45deg);
  }
}

/* ---------- 主体网格 ---------- */
.page-about .about-body {
  padding: clamp(32px, 5.6vw, 72px) 0 clamp(36px, 5.6vw, 76px);
  background: var(--paper);
}

.page-about .about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 50px);
  align-items: start;
}

.page-about .about-rail {
  min-width: 0;
}

.page-about .about-main {
  min-width: 0;
}

@media (min-width: 1000px) {
  .page-about .about-grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(32px, 4.4vw, 58px);
  }
}

/* ---------- 章节 ---------- */
.page-about .about-block {
  border-top: 1px solid var(--line);
  padding-top: clamp(28px, 4.4vw, 50px);
}

.page-about .about-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-main > .about-block + .about-block {
  margin-top: clamp(28px, 4.4vw, 50px);
}

.page-about .about-block__head {
  margin-bottom: clamp(14px, 2.4vw, 22px);
}

.page-about .about-block h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.2vw, 32px);
  font-weight: 700;
  line-height: 1.34;
  letter-spacing: .02em;
  color: var(--ink-teal);
}

.page-about .about-block p {
  max-width: 38em;
  font-size: clamp(15.5px, 1.5vw, 17px);
  line-height: 1.9;
  color: var(--ink);
}

.page-about .about-block p + p {
  margin-top: 14px;
}

/* ---------- 两条主线 ---------- */
.page-about .about-lines {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-line {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 16px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-line__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--pine);
}

.page-about .about-line h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--ink-teal);
}

.page-about .about-line p {
  margin: 0;
  max-width: 32em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: clamp(18px, 3vw, 26px) 0 0;
}

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

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  position: relative;
  margin: clamp(24px, 3.4vw, 34px) 0 0;
  padding: 0 0 0 22px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--warm-gold) 0%, var(--dai-blue) 55%, rgba(27, 58, 107, .12) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding-bottom: 24px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 7px;
  width: 12px;
  height: 12px;
  box-sizing: border-box;
  background: var(--paper);
  border: 2px solid var(--warm-gold);
  border-radius: 50%;
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--dai-blue);
}

.page-about .about-timeline__item h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ink-teal);
}

.page-about .about-timeline__item p {
  margin: 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--stone);
}

@media (min-width: 620px) {
  .page-about .about-timeline__item {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }

  .page-about .about-timeline__year {
    text-align: right;
  }
}

/* ---------- 团队 ---------- */
.page-about .about-teams {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
}

.page-about .about-team {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-team:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--pine);
}

.page-about .about-team h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ink-teal);
}

.page-about .about-team p {
  margin: 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--stone);
}

@media (min-width: 720px) {
  .page-about .about-team {
    grid-template-columns: 44px 150px minmax(0, 1fr);
    align-items: baseline;
  }
}

/* ---------- 整理流程 ---------- */
.page-about .about-flow {
  list-style: none;
  margin: clamp(22px, 3.2vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-about .about-flow__step {
  position: relative;
  padding: 0 0 22px 20px;
  border-left: 2px solid rgba(27, 58, 107, .28);
}

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

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 4px;
  width: 10px;
  height: 10px;
  background: var(--dai-blue);
  transform: rotate(45deg);
}

.page-about .about-flow__time {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cinnabar);
}

.page-about .about-flow__step h3 {
  margin: 6px 0 4px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ink-teal);
}

.page-about .about-flow__step p {
  margin: 0;
  max-width: 30em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--stone);
}

@media (min-width: 820px) {
  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 2px solid var(--dai-blue);
  }

  .page-about .about-flow__step {
    padding: 28px 26px 10px 0;
    border-left: 0;
  }

  .page-about .about-flow__step + .about-flow__step {
    padding-left: 26px;
    border-left: 1px solid var(--line-soft);
  }

  .page-about .about-flow__step::before {
    left: 0;
    top: -7px;
    width: 12px;
    height: 12px;
    background: var(--warm-gold);
  }

  .page-about .about-flow__step + .about-flow__step::before {
    left: 26px;
  }
}

.page-about .about-accordion {
  margin-top: clamp(24px, 3.4vw, 34px);
}

/* ---------- 服务范围 ---------- */
.page-about .about-reach__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}

.page-about .about-facts {
  list-style: none;
  margin: clamp(18px, 2.6vw, 24px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-facts li {
  display: grid;
  gap: 5px;
  padding: 16px 14px;
  background: var(--card);
}

.page-about .about-facts__num {
  font-family: var(--font-mono);
  font-size: 24px;
  letter-spacing: .04em;
  color: var(--ink-teal);
  line-height: 1.1;
}

.page-about .about-facts__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--stone);
}

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

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

@media (min-width: 880px) {
  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 296px);
  }
}

/* ---------- 共建伙伴 ---------- */
.page-about .about-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: clamp(22px, 3.2vw, 30px);
}

.page-about .about-partner {
  --cut: 16px;
  padding: 24px 22px 26px;
  background: var(--ink-teal);
  color: #fff;
}

.page-about .about-partner__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--warm-gold);
}

.page-about .about-partner h3 {
  margin: 12px 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: #fff;
}

.page-about .about-partner p {
  margin: 0;
  max-width: 28em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(243, 239, 230, .78);
}

@media (min-width: 840px) {
  .page-about .about-partners {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-partner:nth-child(1) {
    grid-column: span 3;
  }

  .page-about .about-partner:nth-child(2) {
    grid-column: span 3;
  }

  .page-about .about-partner:nth-child(3) {
    grid-column: 2 / span 4;
  }
}

/* ---------- 结尾区块 ---------- */
.page-about .about-close {
  position: relative;
  overflow: hidden;
  margin-top: clamp(30px, 5vw, 62px);
  padding: clamp(42px, 6.4vw, 84px) 0;
  background: var(--ink-teal);
  color: var(--paper);
}

.page-about .about-close::before {
  content: "";
  position: absolute;
  left: -10%;
  bottom: -40%;
  width: 66%;
  height: 130%;
  background:
    radial-gradient(circle at 30% 60%, rgba(212, 169, 74, .18), transparent 62%),
    radial-gradient(circle at 72% 28%, rgba(168, 198, 194, .16), transparent 58%);
  pointer-events: none;
}

.page-about .about-close__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 54px);
  align-items: start;
}

.page-about .about-close h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1.34;
  letter-spacing: .02em;
  color: #fff;
}

.page-about .about-close p {
  max-width: 34em;
  margin-top: 14px;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(243, 239, 230, .82);
}

.page-about .about-close .eyebrow {
  color: var(--warm-gold);
}

.page-about .about-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-about .about-close__aside {
  padding-top: 18px;
  border-top: 1px solid rgba(212, 169, 74, .35);
}

.page-about .about-close__aside p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(243, 239, 230, .86);
}

.page-about .about-close__aside p + .about-close__label {
  margin-top: 16px;
}

.page-about .about-close__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--warm-gold);
}

.page-about .about-close__aside a {
  color: var(--paper);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 880px) {
  .page-about .about-close__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }
}

@media (max-width: 480px) {
  .page-about .about-line,
  .page-about .about-team {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 4px 12px;
  }

  .page-about .about-partner {
    padding: 20px 18px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
}
<<<END>>>