.page-about {
  --about-gap: clamp(20px, 3vw, 40px);
  --about-rule: rgba(154, 163, 168, .38);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about .wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding: clamp(28px, 5vw, 56px) 0 clamp(36px, 6vw, 72px);
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(242, 160, 61, .10), transparent 62%),
    linear-gradient(180deg, #fffdf8 0%, var(--paper) 100%);
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-13);
  color: var(--muted);
  letter-spacing: .04em;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .breadcrumb a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  border-bottom-color: var(--orange);
}

.page-about .hero-frame {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  padding: clamp(28px, 5vw, 60px) clamp(20px, 4vw, 56px) clamp(24px, 4vw, 48px);
  background: rgba(255, 255, 255, .55);
  box-shadow: 0 1px 0 rgba(20, 24, 26, .04);
}

.page-about .hero-tick {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 9px;
  background: repeating-linear-gradient(90deg, var(--silver) 0 1px, transparent 1px 22px);
  opacity: .7;
  pointer-events: none;
}

.page-about .hero-corner {
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 46px;
  height: 46px;
  border-right: 3px solid var(--orange);
  border-bottom: 3px solid var(--orange);
  pointer-events: none;
}

.page-about .section-eyebrow {
  display: inline-block;
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--green);
  text-transform: none;
  margin: 0 0 14px;
  padding-left: 12px;
  border-left: 3px solid var(--orange);
  line-height: 1.4;
}

.page-about h1.h-poster {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 46px);
  line-height: 1.22;
  letter-spacing: -.01em;
  margin: 0 0 20px;
  color: var(--ink);
  max-width: 22ch;
}

.page-about .lede {
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: #2c3437;
  max-width: 62ch;
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-about .hero-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin: 0;
  padding: clamp(18px, 3vw, 26px) 0 0;
  border-top: 1px solid var(--about-rule);
}

.page-about .hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--green);
}

.page-about .stat-label {
  font-size: var(--fs-13);
  color: var(--muted);
  letter-spacing: .05em;
}

.page-about .numeric {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--green);
}

/* ---------- 通用段落 ---------- */

.page-about .sec-start,
.page-about .sec-team,
.page-about .sec-archive,
.page-about .sec-products,
.page-about .sec-service {
  padding: clamp(44px, 7vw, 88px) 0;
}

.page-about .section-head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .h-editorial {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.28;
  letter-spacing: .005em;
  margin: 0 0 12px;
  color: var(--ink);
}

.page-about .h-sub {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(17px, 1.7vw, 21px);
  line-height: 1.45;
  margin: 0 0 10px;
  color: var(--ink);
}

.page-about .section-note {
  font-size: var(--fs-14);
  color: var(--muted);
  margin: 0;
}

.page-about p {
  margin: 0 0 16px;
  font-size: var(--fs-16);
}

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

.page-about .aside-note {
  font-size: var(--fs-14);
  color: var(--muted);
  border-left: 2px solid var(--line);
  padding-left: 14px;
  margin-top: 22px;
}

.page-about .link-more {
  display: inline-block;
  margin-top: 8px;
  font-size: var(--fs-14);
  font-weight: 600;
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .link-more::after {
  content: " →";
  font-family: var(--font-mono);
}

.page-about .link-more:hover,
.page-about .link-more:focus-visible {
  color: #b56f14;
  border-bottom-color: var(--orange);
}

.page-about .divider {
  height: 1px;
  background: var(--line);
  margin: 20px 0;
}

/* ---------- 图片 ---------- */

.page-about .media-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: 2px;
  background: var(--paper-2);
  border: 1px solid var(--about-rule);
}

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

.page-about .media-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 16px;
  font-size: var(--fs-12);
  letter-spacing: .05em;
  color: var(--paper);
  background: var(--glass);
  backdrop-filter: blur(4px);
}

/* ---------- 起点 ---------- */

.page-about .start-grid {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

.page-about .start-fig {
  order: 2;
}

.page-about .start-copy {
  order: 1;
}

.page-about .start-copy .h-editorial {
  margin-top: 4px;
}

/* ---------- 时间轴 ---------- */

.page-about .sec-timeline {
  padding: clamp(44px, 7vw, 88px) 0;
  background: linear-gradient(180deg, var(--paper-2) 0%, #efe7d6 100%);
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 8px 0 0 30px;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 14px;
  bottom: 26px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange) 0%, var(--orange) 12%, var(--silver) 30%, var(--silver) 100%);
  opacity: .75;
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 clamp(28px, 4vw, 46px);
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 7px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--paper-2);
  border: 2px solid var(--silver);
  box-sizing: border-box;
}

.page-about .tl-item--live::before {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(242, 160, 61, .22);
}

.page-about .tl-mark {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-13);
  letter-spacing: .08em;
  color: var(--muted);
  margin: 0 0 6px;
}

.page-about .tl-item--live .tl-mark {
  color: #b56f14;
  font-weight: 600;
}

.page-about .tl-item p {
  max-width: 64ch;
  color: #2c3437;
}

.page-about .tl-item .link-more {
  margin-top: 4px;
}

/* ---------- 团队 ---------- */

.page-about .team-grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.page-about .team-fig {
  order: 1;
}

.page-about .team-flow {
  order: 2;
}

.page-about .swim {
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: clamp(12px, 2vw, 20px);
  background: #fffdf8;
  border: 1px solid var(--about-rule);
  border-radius: 2px;
}

.page-about .swim svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .team-points {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .team-points li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .team-points li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .team-points .numeric {
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.1;
  min-width: 2.6em;
}

.page-about .team-points strong {
  display: block;
  font-size: var(--fs-14);
  letter-spacing: .06em;
  color: var(--ink);
  margin-bottom: 4px;
}

.page-about .team-points p {
  font-size: var(--fs-14);
  color: var(--muted);
  margin: 0;
}

/* ---------- 档案库 ---------- */

.page-about .sec-archive {
  background:
    linear-gradient(180deg, var(--paper) 0%, #fffdf8 100%);
}

.page-about .archive-bite {
  display: grid;
  gap: 0;
  margin-bottom: clamp(28px, 4vw, 46px);
  border-radius: 2px;
  overflow: hidden;
}

.page-about .archive-panel {
  background: linear-gradient(160deg, var(--green) 0%, var(--green-deep) 100%);
  color: var(--paper);
  padding: clamp(24px, 4vw, 40px);
}

.page-about .archive-eyebrow {
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--cyan-soft);
  margin: 0 0 10px;
}

.page-about .archive-num {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(20px, 2.4vw, 26px);
  margin: 0 0 8px;
  color: var(--paper);
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.page-about .archive-num .stat-num {
  font-size: clamp(48px, 7vw, 76px);
  color: var(--cyan);
  line-height: 1;
}

.page-about .archive-sub {
  font-size: var(--fs-14);
  color: rgba(246, 241, 230, .78);
  margin: 0;
  max-width: 30ch;
}

.page-about .archive-panel .divider {
  background: rgba(154, 163, 168, .35);
  margin: 22px 0;
}

.page-about .archive-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .tag {
  display: inline-block;
  font-size: var(--fs-12);
  letter-spacing: .06em;
  padding: 4px 12px;
  border: 1px solid rgba(89, 224, 208, .45);
  border-radius: 999px;
  color: var(--cyan-soft);
}

.page-about .archive-copy {
  background: var(--paper-2);
  padding: clamp(24px, 4vw, 40px);
  border-left: 1px solid var(--about-rule);
}

.page-about .archive-copy p {
  max-width: 60ch;
  color: #2c3437;
}

.page-about .archive-copy .link-more {
  margin-top: 6px;
}

.page-about .archive-fig {
  margin-top: 0;
}

/* ---------- 年度内容 ---------- */

.page-about .sec-products {
  background:
    radial-gradient(90% 60% at 0% 0%, rgba(89, 224, 208, .10), transparent 60%),
    var(--paper);
}

.page-about .product-grid {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-about .product-card {
  position: relative;
  padding: clamp(24px, 3.4vw, 38px);
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .product-card--paper {
  background: #fffdf8;
  border: 1px solid var(--line-strong);
  box-shadow: 0 1px 0 rgba(20, 24, 26, .04);
}

.page-about .product-card--night {
  background: linear-gradient(155deg, var(--night) 0%, #16242b 100%);
  color: var(--paper);
  border: 1px solid rgba(89, 224, 208, .22);
}

.page-about .product-card--night .h-sub {
  color: var(--paper);
}

.page-about .product-card--night p {
  color: rgba(246, 241, 230, .82);
}

.page-about .product-card--night .numeric {
  color: var(--cyan);
  font-size: 1.2em;
}

.page-about .product-kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--orange);
  margin: 0 0 12px;
}

.page-about .product-card--paper .product-kicker {
  color: #b56f14;
}

.page-about .product-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--about-rule);
  display: grid;
  gap: 10px;
}

.page-about .product-card--night .product-list {
  border-top-color: rgba(154, 163, 168, .3);
}

.page-about .product-list li {
  position: relative;
  padding-left: 20px;
  font-size: var(--fs-14);
}

.page-about .product-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 8px;
  height: 1px;
  background: var(--silver);
}

.page-about .product-card--night .product-list li::before {
  background: var(--cyan);
}

.page-about .sec-products .aside-note {
  margin-top: clamp(22px, 3vw, 32px);
}

/* ---------- 运营节奏 ---------- */

.page-about .sec-service {
  background: linear-gradient(180deg, var(--paper-2) 0%, var(--paper) 100%);
  border-top: 1px solid var(--about-rule);
}

.page-about .service-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .service-copy p {
  max-width: 62ch;
  color: #2c3437;
}

.page-about .service-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
  border-top: 2px solid var(--green);
}

.page-about .service-stats li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .service-stats .stat-num {
  font-size: clamp(26px, 3vw, 34px);
  min-width: 2.4em;
}

.page-about .service-stats .stat-label {
  font-size: var(--fs-14);
  color: #3d4649;
}

.page-about .service-cta {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 3vw, 34px);
  background: linear-gradient(120deg, var(--green) 0%, var(--green-deep) 100%);
  border-radius: 2px;
  align-items: center;
}

.page-about .service-cta p {
  margin: 0;
  color: rgba(246, 241, 230, .9);
  font-size: var(--fs-16);
  max-width: 56ch;
}

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

.page-about .btn {
  display: inline-block;
  padding: 12px 24px;
  font-size: var(--fs-14);
  font-weight: 600;
  letter-spacing: .04em;
  text-decoration: none;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .btn-accent {
  background: var(--orange);
  color: #2a1a06;
}

.page-about .btn-accent:hover,
.page-about .btn-accent:focus-visible {
  background: #ffb658;
  transform: translateY(-2px);
}

.page-about .btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: rgba(246, 241, 230, .48);
}

.page-about .btn-ghost:hover,
.page-about .btn-ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan-soft);
  transform: translateY(-2px);
}

.page-about .btn:focus-visible,
.page-about .link-more:focus-visible,
.page-about .breadcrumb a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 淡入 ---------- */

.page-about [data-reveal] {
  opacity: 1;
}

.js-ready .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

.js-ready .page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 小屏 ---------- */

@media (max-width: 560px) {
  .page-about .hero-corner {
    width: 30px;
    height: 30px;
  }

  .page-about .hero-stats {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .page-about .team-points li {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-about .team-points .numeric {
    min-width: 0;
  }

  .page-about .service-actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

/* ---------- 中屏 ---------- */

@media (min-width: 720px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }

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

  .page-about .product-card--night {
    margin-top: 26px;
  }

  .page-about .service-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 28px;
  }
}

/* ---------- 宽屏 ---------- */

@media (min-width: 900px) {
  .page-about .start-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(30px, 4vw, 56px);
    align-items: start;
  }

  .page-about .start-fig {
    order: 1;
    margin-top: 10px;
  }

  .page-about .start-copy {
    order: 2;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: clamp(30px, 4vw, 54px);
    align-items: start;
  }

  .page-about .team-fig {
    order: 2;
    margin-top: 44px;
  }

  .page-about .team-flow {
    order: 1;
  }

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

  .page-about .archive-fig {
    margin-top: clamp(24px, 3vw, 40px);
  }

  .page-about .service-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 60px);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .timeline {
    padding-left: 38px;
  }

  .page-about .tl-item::before {
    left: -38px;
  }

  .page-about .timeline::before {
    left: 7px;
  }

  .page-about .tl-item {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-about .tl-item .tl-mark {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .tl-item .h-sub {
    grid-column: 1;
    grid-row: 2;
  }

  .page-about .tl-item p {
    grid-column: 1;
    grid-row: 3;
  }

  .page-about .tl-item .link-more {
    grid-column: 1;
    grid-row: 4;
  }

  .page-about .tl-item::after {
    content: "";
    grid-column: 2;
    grid-row: 1 / span 4;
    align-self: center;
    height: 1px;
    background: linear-gradient(90deg, var(--line-strong), transparent);
    margin-left: clamp(16px, 2vw, 30px);
  }
}
<<<END>>>