.page-about {
  --about-index-w: 236px;
  --about-panel: #FFFCF7;
  background: var(--pj-paper);
  color: var(--pj-black);
  font-family: var(--pj-font-sans);
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
}

.page-about .pj-container {
  width: 100%;
  max-width: var(--pj-wrap);
  margin-inline: auto;
  padding-inline: var(--pj-gutter);
}

/* ---------- 面包屑 ---------- */
.page-about .about-breadcrumb {
  padding-top: 22px;
  padding-bottom: 4px;
}

.page-about .pj-breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: var(--pj-fs-xs);
  letter-spacing: .04em;
  color: var(--pj-gray);
  font-family: var(--pj-font-mono);
}

.page-about .pj-breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--pj-line);
}

.page-about .pj-breadcrumb a {
  color: var(--pj-purple);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(26px, 4vw, 48px) 0 0;
}

.page-about .about-hero__title {
  margin: 16px 0 0;
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.06;
  max-width: 20ch;
  color: var(--pj-ink);
  font-size: clamp(34px, 6vw, 74px);
}

.page-about .about-hero__lead {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin: clamp(28px, 4vw, 46px) 0 0;
}

@media (min-width: 960px) {
  .page-about .about-hero__lead {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

.page-about .about-hero .pj-lede {
  max-width: 48ch;
  margin: 0;
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.8;
  color: var(--pj-ink);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 1px;
  background: var(--pj-line);
  border: 1px solid var(--pj-line);
  border-radius: var(--pj-radius);
  overflow: hidden;
}

.page-about .about-stat {
  background: var(--about-panel);
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stat__num {
  font-size: clamp(24px, 2.4vw, 34px);
  font-weight: 600;
  line-height: 1;
  color: var(--pj-purple);
  letter-spacing: -.01em;
}

.page-about .about-stat__label {
  font-size: var(--pj-fs-xs);
  line-height: 1.6;
  color: var(--pj-gray);
}

.page-about .about-hero__band {
  display: block;
  height: 3px;
  margin-top: clamp(34px, 5vw, 56px);
  background: var(--pj-grad);
}

/* ---------- 主体两栏 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  padding-top: clamp(30px, 4vw, 52px);
  padding-bottom: clamp(56px, 8vw, 110px);
  align-items: start;
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-index-w) minmax(0, 1fr);
  }
}

/* ---------- 左侧索引 ---------- */
.page-about .about-index__title {
  margin: 0 0 12px;
  font-family: var(--pj-font-mono);
  font-size: var(--pj-fs-xs);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--pj-red);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 4px;
}

.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__list li {
  flex: 0 0 auto;
}

.page-about .about-index__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--pj-line);
  border-radius: var(--pj-radius);
  font-size: var(--pj-fs-sm);
  color: var(--pj-ink);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-about .about-index__no {
  font-size: var(--pj-fs-xs);
  color: var(--pj-purple);
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  border-color: var(--pj-purple);
  background: var(--pj-mist);
}

@media (min-width: 1000px) {
  .page-about .about-index {
    position: sticky;
    top: 96px;
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index__list li {
    flex: 1 1 auto;
  }

  .page-about .about-index__list a {
    border: 0;
    border-bottom: 1px solid var(--pj-line-soft);
    border-radius: 0;
    padding: 10px 2px 10px 0;
    gap: 10px;
    white-space: normal;
    line-height: 1.5;
  }

  .page-about .about-index__list li:first-child a {
    border-top: 1px solid var(--pj-line-soft);
  }

  .page-about .about-index__list a:hover,
  .page-about .about-index__list a:focus-visible {
    background: transparent;
    color: var(--pj-purple);
    padding-left: 8px;
  }
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  padding: clamp(32px, 4.6vw, 60px) 0;
  border-top: 1px solid var(--pj-line);
}

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

.page-about .about-section__rule {
  display: block;
  width: 56px;
  height: 3px;
  background: var(--pj-grad);
  margin-bottom: 20px;
}

.page-about .about-section__head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .about-section__no {
  display: block;
  font-size: var(--pj-fs-xs);
  letter-spacing: .16em;
  color: var(--pj-bronze);
  margin-bottom: 8px;
}

.page-about .about-section__head h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 40px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--pj-ink);
  max-width: 24ch;
}

.page-about .about-section__sub {
  margin: 14px 0 0;
  font-size: var(--pj-fs-body);
  line-height: 1.85;
  color: var(--pj-gray);
  max-width: 60ch;
}

.page-about .about-copy p {
  margin: 0 0 16px;
  font-size: var(--pj-fs-body);
  line-height: 1.85;
  color: var(--pj-black);
  max-width: 62ch;
}

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

.page-about .about-copy a {
  color: var(--pj-purple);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-about .about-note {
  margin: 22px 0 0;
  font-size: var(--pj-fs-sm);
  line-height: 1.8;
  color: var(--pj-gray);
  max-width: 62ch;
  padding-left: 14px;
  border-left: 2px solid var(--pj-blush);
}

.page-about .about-note a {
  color: var(--pj-red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-callout {
  margin-top: 22px;
  padding: 18px 22px;
  background: var(--pj-mist);
  border-left: 3px solid var(--pj-purple);
  border-radius: 0 var(--pj-radius) var(--pj-radius) 0;
}

.page-about .about-callout p {
  margin: 0;
  font-size: var(--pj-fs-body);
  line-height: 1.8;
  color: var(--pj-ink);
  max-width: 58ch;
}

/* ---------- 图片位 ---------- */
.page-about .about-media {
  margin: 0 0 clamp(24px, 3.4vw, 38px);
  border: 1px solid var(--pj-line);
  border-radius: var(--pj-radius);
  background: var(--pj-mist);
}

.page-about .about-media .pj-media__caption {
  padding: 10px 14px;
  font-size: var(--pj-fs-xs);
  line-height: 1.7;
  color: var(--pj-gray);
  background: var(--about-panel);
  border-top: 1px solid var(--pj-line-soft);
}

/* ---------- 表格 ---------- */
.page-about .about-table__wrap {
  overflow-x: auto;
  border: 1px solid var(--pj-line);
  border-radius: var(--pj-radius);
  background: var(--about-panel);
}

.page-about .about-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: var(--pj-fs-sm);
}

.page-about .about-table caption {
  caption-side: top;
  text-align: left;
  padding: 14px 16px 0;
  font-family: var(--pj-font-mono);
  font-size: var(--pj-fs-xs);
  letter-spacing: .1em;
  color: var(--pj-gray);
}

.page-about .about-table th,
.page-about .about-table td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--pj-line-soft);
  vertical-align: top;
  line-height: 1.7;
}

.page-about .about-table thead th {
  font-family: var(--pj-font-mono);
  font-size: var(--pj-fs-xs);
  letter-spacing: .1em;
  color: var(--pj-purple);
  background: var(--pj-mist);
  border-bottom: 1px solid var(--pj-line);
}

.page-about .about-table tbody th {
  font-weight: 700;
  color: var(--pj-ink);
  white-space: nowrap;
}

.page-about .about-table tbody tr:last-child th,
.page-about .about-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .about-table tbody tr:hover {
  background: rgba(91, 44, 111, .05);
}

.page-about .about-table .pj-num {
  color: var(--pj-red);
  font-weight: 600;
}

/* ---------- 资料库章节的分栏 ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

@media (min-width: 860px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: start;
  }

  .page-about .about-split .about-media {
    margin-bottom: 0;
  }
}

/* ---------- 三审列表 ---------- */
.page-about .about-review {
  list-style: none;
  margin: clamp(24px, 3vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--pj-line);
  border: 1px solid var(--pj-line);
  border-radius: var(--pj-radius);
  overflow: hidden;
}

@media (min-width: 820px) {
  .page-about .about-review {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-review__item {
  background: var(--about-panel);
  padding: 22px 20px 24px;
}

.page-about .about-review__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--pj-grad);
  color: #FFF7F2;
  font-size: var(--pj-fs-xs);
  margin-bottom: 12px;
}

.page-about .about-review__item h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--pj-ink);
}

.page-about .about-review__item p {
  margin: 0;
  font-size: var(--pj-fs-sm);
  line-height: 1.85;
  color: var(--pj-gray);
}

/* ---------- 等宽数据行 ---------- */
.page-about .about-data {
  display: grid;
  gap: 4px;
  margin-top: clamp(26px, 3.4vw, 40px);
  padding-top: 20px;
  border-top: 1px solid var(--pj-line);
}

@media (min-width: 700px) {
  .page-about .about-data {
    grid-template-columns: minmax(140px, auto) minmax(0, 1fr);
    column-gap: 28px;
    row-gap: 10px;
  }
}

.page-about .about-data--tight {
  margin-top: 26px;
}

.page-about .about-data__num {
  font-size: var(--pj-fs-body);
  font-weight: 600;
  color: var(--pj-purple);
  letter-spacing: -.01em;
}

.page-about .about-data > span:not(.about-data__num) {
  font-size: var(--pj-fs-sm);
  line-height: 1.75;
  color: var(--pj-gray);
}

.page-about .about-data a {
  color: var(--pj-red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 版本时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(24px, 3vw, 34px);
}

@media (min-width: 840px) {
  .page-about .about-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }
}

.page-about .about-timeline__item {
  position: relative;
  padding-top: 34px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  top: 15px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--pj-grad);
  opacity: .4;
}

.page-about .about-timeline__item:last-child::before {
  right: 45%;
}

.page-about .about-timeline__dot {
  position: absolute;
  top: 10px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--pj-red);
  box-shadow: 0 0 0 3px var(--pj-paper);
}

.page-about .about-timeline__ver {
  margin: 0;
  font-size: clamp(22px, 2.2vw, 30px);
  font-weight: 600;
  line-height: 1;
  color: var(--pj-ink);
}

.page-about .about-timeline__year {
  margin: 8px 0 0;
  font-size: var(--pj-fs-xs);
  letter-spacing: .1em;
  color: var(--pj-bronze);
}

.page-about .about-timeline__name {
  margin: 10px 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--pj-purple);
}

.page-about .about-timeline__desc {
  margin: 0;
  font-size: var(--pj-fs-sm);
  line-height: 1.85;
  color: var(--pj-gray);
}

@media (max-width: 839px) {
  .page-about .about-timeline__item {
    padding-top: 0;
    padding-left: 24px;
    border-left: 2px solid var(--pj-mist);
  }

  .page-about .about-timeline__item::before {
    display: none;
  }

  .page-about .about-timeline__dot {
    top: 4px;
    left: -7px;
    box-shadow: 0 0 0 3px var(--pj-paper);
  }
}

/* ---------- 团队深色面板 ---------- */
.page-about .about-ink {
  background: var(--pj-ink);
  color: var(--pj-paper);
  border-radius: var(--pj-radius);
  padding: clamp(24px, 3.4vw, 40px);
  box-shadow: var(--pj-shadow);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 18px 22px;
  padding-bottom: clamp(20px, 2.6vw, 30px);
  border-bottom: 1px solid rgba(247, 243, 236, .18);
}

.page-about .about-figure {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-figure__num {
  font-size: clamp(22px, 2.2vw, 30px);
  font-weight: 600;
  line-height: 1;
  color: var(--pj-blush);
}

.page-about .about-figure__label {
  font-size: var(--pj-fs-xs);
  line-height: 1.7;
  color: rgba(247, 243, 236, .62);
}

.page-about .about-ink__copy {
  margin-top: clamp(20px, 2.6vw, 30px);
  display: grid;
  gap: 16px;
}

@media (min-width: 780px) {
  .page-about .about-ink__copy {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 34px;
  }
}

.page-about .about-ink__copy p {
  margin: 0;
  font-size: var(--pj-fs-sm);
  line-height: 1.9;
  color: rgba(247, 243, 236, .82);
}

/* ---------- 长期做法 ---------- */
.page-about .about-practice {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-practice__item {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--pj-line);
}

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

@media (min-width: 760px) {
  .page-about .about-practice__item {
    grid-template-columns: 44px minmax(0, .85fr) minmax(0, 1.35fr);
    column-gap: 26px;
    align-items: start;
  }
}

.page-about .about-practice__no {
  font-size: var(--pj-fs-sm);
  font-weight: 600;
  color: var(--pj-red);
}

.page-about .about-practice__item h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--pj-ink);
}

.page-about .about-practice__item p {
  margin: 0;
  font-size: var(--pj-fs-sm);
  line-height: 1.85;
  color: var(--pj-gray);
}

.page-about .about-practice__item a {
  color: var(--pj-purple);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  margin-top: clamp(34px, 4.6vw, 60px);
  padding-top: clamp(26px, 3.4vw, 40px);
  border-top: 3px solid transparent;
  border-image: var(--pj-grad) 1;
}

.page-about .about-next h2 {
  margin: 0 0 20px;
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--pj-ink);
}

.page-about .about-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--pj-line);
  border: 1px solid var(--pj-line);
  border-radius: var(--pj-radius);
  overflow: hidden;
}

@media (min-width: 720px) {
  .page-about .about-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-next__list a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 18px 20px;
  background: var(--about-panel);
  text-decoration: none;
  transition: background-color .2s ease;
}

.page-about .about-next__list a:hover,
.page-about .about-next__list a:focus-visible {
  background: var(--pj-mist);
}

.page-about .about-next__label {
  font-size: 16px;
  font-weight: 800;
  color: var(--pj-ink);
  line-height: 1.5;
}

.page-about .about-next__hint {
  font-size: var(--pj-fs-xs);
  line-height: 1.7;
  color: var(--pj-gray);
}

/* ---------- 滚动显现 ---------- */
.page-about.pj-js .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .4s ease, transform .4s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .page-about.pj-js .page-about [data-reveal],
  .page-about.pj-js .page-about [data-reveal].is-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .about-index__list a,
  .page-about .about-next__list a {
    transition: none;
  }
}

/* ---------- 窄屏收尾 ---------- */
@media (max-width: 520px) {
  .page-about .about-hero__title {
    max-width: none;
  }

  .page-about .about-section__head h2 {
    max-width: none;
  }

  .page-about .about-table caption {
    padding-top: 12px;
  }
}
<<<END>>>