.page-about {
  --about-col: clamp(62px, 13vw, 132px);
  --about-gap: clamp(14px, 3vw, 26px);
  position: relative;
  padding-bottom: clamp(40px, 6vw, 80px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-about .about-stats {
  list-style: none;
  margin: clamp(22px, 4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink-2);
  border: 1px solid var(--ink-2);
}

.page-about .about-stats__item {
  background: var(--ink-1);
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-about .about-stats__num {
  font-size: clamp(20px, 3.4vw, 30px);
  line-height: 1.1;
  font-weight: 600;
  color: var(--fluor);
  letter-spacing: -0.01em;
}

.page-about .about-stats__label {
  font-size: 13px;
  line-height: 1.45;
  color: var(--haze);
}

/* ---------- 章节通用 ---------- */
.page-about .about-block {
  position: relative;
  margin-top: clamp(44px, 7vw, 86px);
}

.page-about .block-head {
  max-width: 60ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .block-head h2 {
  margin: 8px 0 12px;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .block-lede {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--haze);
}

/* ---------- 版本时间线 ---------- */
.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 18px;
  left: calc(var(--about-col) - 1px);
  width: 2px;
  background: linear-gradient(180deg, var(--ice) 0%, var(--ink-2) 38%, var(--ink-2) 100%);
  opacity: 0.9;
}

.page-about .tl__item {
  position: relative;
  display: grid;
  grid-template-columns: var(--about-col) minmax(0, 1fr);
  column-gap: var(--about-gap);
  padding-bottom: clamp(18px, 3vw, 28px);
}

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

.page-about .tl__year {
  margin: 0;
  padding: 14px 14px 0 0;
  text-align: right;
  font-size: clamp(14px, 2vw, 24px);
  font-weight: 600;
  line-height: 1.2;
  color: var(--ice);
}

.page-about .tl__node {
  position: absolute;
  top: 19px;
  left: calc(var(--about-col) - 8px);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-0);
  border: 2px solid var(--fluor);
  box-sizing: content-box;
}

.page-about .tl__item:last-child .tl__node {
  background: var(--fluor);
  box-shadow: 0 0 0 4px rgba(59, 240, 192, 0.16);
}

.page-about .tl__card {
  padding: clamp(16px, 2.4vw, 24px);
  transition: transform var(--dur) ease, border-color var(--dur) ease;
}

.page-about .tl__card:hover,
.page-about .tl__card:focus-within {
  transform: translateY(-3px);
}

.page-about .tl__ver {
  margin: 0 0 8px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--clay);
  font-weight: 600;
}

.page-about .tl__title {
  margin: 0 0 10px;
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.38;
  color: var(--paper);
}

.page-about .tl__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--haze);
}

/* ---------- 团队分工 ---------- */
.page-about .team-media {
  margin: 0 0 clamp(18px, 3vw, 28px);
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .team-card {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 18px 16px 20px;
  transition: transform var(--dur) ease, box-shadow var(--dur) ease;
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
}

.page-about .team-card__idx {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--ice);
}

.page-about .team-card__name {
  margin: 0;
  font-size: 18px;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .team-card__count {
  margin: 0;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--fluor);
}

.page-about .team-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--haze);
}

.page-about .team-card__link {
  margin: 6px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--ink-2);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--moss);
}

/* ---------- 内容流水线 ---------- */
.page-about .flow-wrap {
  display: grid;
  gap: clamp(16px, 3vw, 24px);
}

.page-about .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .flow-step {
  position: relative;
  padding: 16px 16px 20px;
  background: linear-gradient(158deg, rgba(17, 28, 51, 0.96), rgba(10, 16, 32, 0.96));
  border: 1px solid var(--ink-2);
  border-left: 2px solid var(--ice);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  transition: transform var(--dur) ease, border-color var(--dur) ease;
}

.page-about .flow-step:hover,
.page-about .flow-step:focus-within {
  transform: translateY(-3px);
  border-color: var(--ice);
}

.page-about .flow-step__time {
  margin: 0 0 8px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--fluor);
  font-weight: 600;
}

.page-about .flow-step__title {
  margin: 0 0 8px;
  font-size: 16.5px;
  line-height: 1.38;
  color: var(--paper);
}

.page-about .flow-step__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--haze);
}

.page-about .flow-media {
  margin: 0;
}

/* ---------- 审核与一致性 ---------- */
.page-about .check-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .check-card {
  padding: 18px 16px 20px;
  background: rgba(17, 28, 51, 0.66);
  border-top: 2px solid var(--fluor);
}

.page-about .check-card__idx {
  margin: 0 0 10px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--fluor);
}

.page-about .check-card h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  line-height: 1.36;
  color: var(--paper);
}

.page-about .check-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--haze);
}

.page-about .sync-note {
  margin-top: 14px;
  padding: clamp(18px, 3vw, 26px);
  display: grid;
  gap: 10px;
}

.page-about .sync-note h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.35;
  color: var(--ice);
}

.page-about .sync-note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--haze);
}

/* ---------- 区域服务 ---------- */
.page-about .region {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4vw, 46px) clamp(18px, 3vw, 36px);
  background: var(--ink-1);
  border: 1px solid var(--ink-2);
}

.page-about .region__texture {
  position: absolute;
  inset: 0;
  opacity: 0.24;
  pointer-events: none;
}

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

.page-about .region__texture::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(10, 16, 32, 0.95) 0%, rgba(10, 16, 32, 0.62) 52%, rgba(10, 16, 32, 0.92) 100%);
}

.page-about .region__inner {
  position: relative;
  z-index: 1;
  max-width: 72ch;
}

.page-about .region__inner h2 {
  margin: 8px 0 12px;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.24;
  color: var(--paper);
}

.page-about .region__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--haze);
}

.page-about .region__list {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .region__list li {
  padding-left: 12px;
  border-left: 2px solid var(--moss);
  font-size: 14px;
  line-height: 1.75;
  color: var(--haze);
}

.page-about .region__list strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  color: var(--paper);
}

/* ---------- 合作生态 ---------- */
.page-about .partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-2);
  border: 1px solid var(--ink-2);
}

.page-about .partner-list li {
  background: var(--ink-0);
  padding: 16px 16px 18px;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  column-gap: 12px;
  row-gap: 4px;
}

.page-about .partner-list .mono {
  grid-row: 1 / span 2;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--ice);
  padding-top: 4px;
}

.page-about .partner-list h3 {
  grid-column: 2;
  margin: 0;
  font-size: 16.5px;
  line-height: 1.36;
  color: var(--paper);
}

.page-about .partner-list p {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--haze);
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  margin-top: clamp(44px, 7vw, 86px);
  padding: clamp(24px, 4vw, 44px);
  background: linear-gradient(138deg, rgba(17, 28, 51, 0.97), rgba(10, 16, 32, 0.97));
}

.page-about .about-cta h2 {
  margin: 8px 0 12px;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.24;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--haze);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-about .about-cta__link {
  font-size: 14px;
  line-height: 1.5;
  color: var(--ice);
  text-decoration: underline;
  text-underline-offset: 4px;
  padding: 6px 0;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.page-about .about-cta__link:hover,
.page-about .about-cta__link:focus-visible {
  color: var(--fluor);
}

.page-about .about-cta__back {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--haze);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .check-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .region__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .sync-note {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.7fr);
    align-items: start;
    gap: 26px;
  }
  .page-about .partner-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .flow-wrap {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }
  .page-about .flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-stats {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl__card,
  .page-about .team-card,
  .page-about .flow-step {
    transition: none;
  }
  .page-about .tl__card:hover,
  .page-about .tl__card:focus-within,
  .page-about .team-card:hover,
  .page-about .team-card:focus-within,
  .page-about .flow-step:hover,
  .page-about .flow-step:focus-within {
    transform: none;
  }
}
<<<END>>>