.page-about {
  display: block;
  color: var(--ink);
  overflow-x: clip;
}

/* ============ 通用区块节奏 ============ */
.page-about .about-hero,
.page-about .about-services,
.page-about .about-timeline,
.page-about .about-craft,
.page-about .about-reach,
.page-about .about-partners,
.page-about .about-reasons,
.page-about .about-cta {
  padding-block: clamp(32px, 5vw, 68px);
  position: relative;
}

.page-about h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.3vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.005em;
  margin: 0;
}

.page-about h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.25;
  margin: 0;
}

.page-about p {
  margin: 0;
  line-height: 1.8;
}

.page-about .section-head {
  display: grid;
  gap: 14px;
  align-items: end;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.page-about .section-head .eyebrow {
  margin-bottom: 10px;
}

.page-about .section-head .lede {
  color: var(--muted);
  font-size: clamp(14px, 1.6vw, 16px);
  max-width: 48ch;
}

@media (min-width: 780px) {
  .page-about .section-head {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 56px);
  }
  .page-about .section-head .lede {
    justify-self: end;
    margin-bottom: 4px;
  }
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  padding-top: clamp(22px, 3.4vw, 44px);
  padding-bottom: clamp(30px, 4.6vw, 62px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 460px;
  background:
    radial-gradient(58% 100% at 10% 22%, rgba(0, 229, 255, 0.16), transparent 70%),
    radial-gradient(48% 88% at 94% 0%, rgba(255, 106, 26, 0.14), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 50px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.012em;
  margin: 14px 0 0;
  max-width: 17ch;
}

.page-about .about-hero .lede {
  margin-top: 18px;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--muted);
  max-width: 46ch;
}

.page-about .about-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-about .about-fact {
  background: var(--panel);
  padding: clamp(13px, 1.8vw, 22px) clamp(11px, 1.5vw, 20px);
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
}

.page-about .about-fact__num {
  font-size: clamp(19px, 3.2vw, 30px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-about .about-fact__label {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--muted);
  line-height: 1.5;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(36px, 5vw, 76px);
  }
}

/* ============ 三块服务 ============ */
.page-about .service-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
}

.page-about .service-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: clamp(22px, 3vw, 32px) clamp(18px, 2.4vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition: transform 220ms ease, border-color 220ms ease;
}

.page-about .service-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--cyan);
}

.page-about .service-card:nth-child(2)::after {
  background: var(--orange);
}

.page-about .service-card:nth-child(3)::after {
  background: var(--green);
}

.page-about .service-card:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
}

.page-about .service-card__no {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .service-card > p {
  color: var(--muted);
  font-size: 15px;
}

.page-about .service-card__list {
  list-style: none;
  margin: auto 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 9px;
}

.page-about .service-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink);
}

.page-about .service-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-about .service-card:nth-child(2) .service-card__list li::before {
  background: var(--orange);
}

.page-about .service-card:nth-child(3) .service-card__list li::before {
  background: var(--green);
}

@media (min-width: 840px) {
  .page-about .service-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ============ 版本时间线 ============ */
.page-about .timeline-visual {
  margin: 0 0 clamp(22px, 3vw, 36px);
}

.page-about .filter-bar {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 32px;
  position: relative;
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--orange) 58%, rgba(38, 49, 77, 0.2));
}

.page-about .timeline-node {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 20px 18px;
}

.page-about .timeline-node[hidden],
.page-about .timeline-node.is-hidden {
  display: none;
}

.page-about .timeline-node::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 24px;
  width: 10px;
  height: 10px;
  background: var(--bg);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
}

.page-about .timeline-node:nth-child(3)::before,
.page-about .timeline-node:nth-child(4)::before {
  border-color: var(--orange);
}

.page-about .timeline-node:nth-child(5)::before {
  border-color: var(--green);
}

.page-about .timeline-node__year {
  font-size: clamp(22px, 4.6vw, 28px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .timeline-node__body {
  display: grid;
  gap: 10px;
  justify-items: start;
}

.page-about .timeline-node__body h3 {
  margin-top: 2px;
}

.page-about .timeline-node__body p {
  font-size: 14.5px;
  color: var(--muted);
  max-width: 62ch;
}

.page-about .timeline-node__note {
  font-size: 13px;
  color: var(--muted);
  border-left: 2px solid var(--line);
  padding-left: 12px;
  max-width: 58ch;
}

@media (min-width: 900px) {
  .page-about .timeline {
    padding-left: 0;
    gap: 0;
  }

  .page-about .timeline::before {
    left: 154px;
    top: 10px;
    bottom: 10px;
  }

  .page-about .timeline-node {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 0 46px;
    background: transparent;
    border: 0;
    padding: 26px 0;
  }

  .page-about .timeline-node:first-child {
    padding-top: 4px;
  }

  .page-about .timeline-node:last-child {
    padding-bottom: 4px;
  }

  .page-about .timeline-node + .timeline-node {
    border-top: 1px solid var(--line);
  }

  .page-about .timeline-node::before {
    left: 150px;
    top: 32px;
  }

  .page-about .timeline-node__year {
    text-align: right;
    padding-top: 4px;
  }
}

/* ============ 内容生产 ============ */
.page-about .craft-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 52px);
  align-items: center;
}

.page-about .craft-text {
  display: grid;
  gap: 14px;
  justify-items: start;
}

.page-about .craft-text .eyebrow {
  margin-bottom: 2px;
}

.page-about .craft-text p {
  font-size: 15px;
  color: var(--muted);
  max-width: 58ch;
}

.page-about .craft-link a {
  color: var(--cyan);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  padding-bottom: 2px;
}

.page-about .craft-link a:hover {
  border-bottom-color: var(--cyan);
}

@media (min-width: 900px) {
  .page-about .craft-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }
}

/* ============ 广东地区 ============ */
.page-about .reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 52px);
  align-items: center;
}

.page-about .reach-text {
  display: grid;
  gap: 14px;
  justify-items: start;
}

.page-about .reach-text p {
  font-size: 15px;
  color: var(--muted);
  max-width: 54ch;
}

.page-about .reach-metric {
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 16px 20px;
  background: var(--layer);
  border-left: 3px solid var(--orange);
}

.page-about .reach-metric .stat-num {
  font-size: clamp(34px, 6vw, 54px);
  line-height: 1;
}

.page-about .reach-metric__label {
  font-size: 13.5px;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-about .reach-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  }

  .page-about .reach-media {
    order: 2;
  }

  .page-about .reach-text {
    order: 1;
  }
}

/* ============ 合作生态 ============ */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
}

.page-about .partner-block {
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--line);
  padding: clamp(20px, 2.6vw, 28px);
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .partner-block:nth-child(1) {
  border-top-color: var(--cyan);
}

.page-about .partner-block:nth-child(2) {
  border-top-color: var(--orange);
}

.page-about .partner-block--wide {
  border-top-color: var(--green);
}

.page-about .partner-block p {
  font-size: 14.5px;
  color: var(--muted);
}

.page-about .partner-link a {
  color: var(--green);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 214, 122, 0.4);
  padding-bottom: 2px;
}

@media (min-width: 820px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .partner-block--wide {
    grid-column: 1 / -1;
  }
}

/* ============ 留下的理由 ============ */
.page-about .reason-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 26px);
}

.page-about .reason {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 28px);
  background: linear-gradient(135deg, var(--layer), var(--panel));
  border: 1px solid var(--line);
  position: relative;
}

.page-about .reason__no {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .reason p {
  font-size: 14.5px;
  color: var(--muted);
}

@media (min-width: 840px) {
  .page-about .reason-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ============ 结尾行动区 ============ */
.page-about .about-cta {
  padding-bottom: clamp(44px, 6vw, 88px);
}

.page-about .cta-panel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: clamp(26px, 4vw, 48px) clamp(20px, 3.2vw, 46px);
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-about .cta-panel::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-about .cta-panel__text {
  display: grid;
  gap: 12px;
}

.page-about .cta-panel__text p {
  font-size: 15px;
  color: var(--muted);
  max-width: 52ch;
}

.page-about .cta-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 820px) {
  .page-about .cta-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-about .cta-panel__actions {
    justify-content: flex-end;
  }
}

/* ============ 图片容器兜底 ============ */
.page-about .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .timeline-visual .media-frame img {
  aspect-ratio: 1400 / 900;
}

.page-about .craft-media .media-frame img {
  aspect-ratio: 1600 / 900;
}

.page-about .reach-media .media-frame img {
  aspect-ratio: 1200 / 800;
}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-about .service-card {
    transition: none;
  }

  .page-about .service-card:hover {
    transform: none;
  }
}
<<<END>>>