/* ============================================================
   品牌故事页 · page-about
   ============================================================ */

.page-about {
  --ab-glow-cyan: rgba(63, 224, 200, 0.16);
  --ab-glow-orange: rgba(255, 107, 44, 0.18);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding: 20px 0 6px;
}

/* ---------- 开篇 ---------- */
.page-about .about-lede {
  position: relative;
  padding: 22px 0 52px;
}

.page-about .about-lede::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--line) 34%, transparent 100%);
  opacity: 0.7;
}

.page-about .about-lede__inner {
  display: grid;
  gap: 34px;
}

@media (min-width: 960px) {
  .page-about .about-lede__inner {
    grid-template-columns: minmax(0, 1.16fr) minmax(0, 0.84fr);
    gap: 60px;
    align-items: start;
  }
}

.page-about .about-lede__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gray-idx);
}

.page-about .about-lede h1 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 6.2vw, 58px);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.page-about .about-lede__lead {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--steel);
}

.page-about .about-lede__text {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray-idx);
}

.page-about .about-lede__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 20px;
  margin: 34px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--line-soft);
  list-style: none;
}

@media (min-width: 620px) {
  .page-about .about-lede__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-lede__stats .stat-block__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
}

.page-about .about-lede__stats .stat-block__value--cyan {
  color: var(--cyan);
}

.page-about .about-lede__stats .stat-block__value--orange {
  color: var(--orange);
}

.page-about .about-lede__stats .stat-block__label {
  display: block;
  margin-top: 9px;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--gray-idx);
}

/* 开篇竖幅影像 */
.page-about .about-lede__media {
  margin: 0;
}

.page-about .about-lede__media .media__frame {
  position: relative;
  overflow: hidden;
  clip-path: var(--cut);
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
}

.page-about .about-lede__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.6) contrast(1.06) brightness(0.82);
}

.page-about .about-lede__media .media__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--gray-idx);
}

@media (max-width: 959px) {
  .page-about .about-lede__media .media__frame {
    aspect-ratio: 16 / 10;
  }
  .page-about .about-lede__media .media__img {
    height: 100%;
  }
}

/* ---------- 主体两栏（索引 + 内容流） ---------- */
.page-about .about-body {
  display: grid;
  gap: 36px;
  padding-bottom: 72px;
}

@media (min-width: 1024px) {
  .page-about .about-body {
    grid-template-columns: 172px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}

/* 章节索引 */
.page-about .about-index {
  border-top: 1px solid var(--line-soft);
  padding-top: 14px;
}

.page-about .about-index__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gray-idx);
}

.page-about .about-index__list {
  display: flex;
  gap: 18px;
  margin: 10px 0 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--gray-idx);
  text-decoration: none;
  transition: color 180ms var(--ease);
}

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

.page-about .about-index__num {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gray-idx);
  opacity: 0.7;
}

@media (min-width: 1024px) {
  .page-about .about-index {
    position: sticky;
    top: 96px;
    border-top: 0;
    border-left: 1px solid var(--line-soft);
    padding: 2px 0 2px 16px;
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 15px;
    overflow: visible;
    padding: 0;
  }

  .page-about .about-index__link {
    white-space: normal;
    line-height: 1.4;
  }
}

/* ---------- 章节容器 ---------- */
.page-about .about-sec {
  padding-bottom: 56px;
  scroll-margin-top: 104px;
}

.page-about .about-sec + .about-sec {
  padding-top: 52px;
  border-top: 1px solid var(--line-soft);
}

@media (min-width: 1024px) {
  .page-about .about-sec {
    padding-bottom: 72px;
  }
  .page-about .about-sec + .about-sec {
    padding-top: 64px;
  }
}

/* 章节头 */
.page-about .section-head {
  margin: 0 0 26px;
}

.page-about .section-head__index {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .section-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(25px, 4.3vw, 40px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .section-head__note {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray-idx);
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-timeline {
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 16px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-700) transparent;
}

.page-about .about-timeline:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-about .about-timeline__track {
  display: flex;
  min-width: min-content;
  padding-top: 6px;
}

.page-about .about-node {
  position: relative;
  flex: 0 0 228px;
  width: 228px;
  box-sizing: border-box;
  padding: 34px 26px 6px 0;
  scroll-snap-align: start;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--line);
}

.page-about .about-node::after {
  content: "";
  position: absolute;
  top: 5px;
  left: 0;
  width: 9px;
  height: 9px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--gray-idx);
}

.page-about .about-node:last-child::before {
  right: 26px;
}

.page-about .about-node__year {
  display: block;
  font-size: 27px;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  color: var(--gray-idx);
}

.page-about .about-node__title {
  margin: 14px 0 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .about-node__desc {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .about-node--current::before {
  background: linear-gradient(90deg, var(--orange) 0%, var(--line) 58%);
}

.page-about .about-node--current::after {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 4px var(--ab-glow-orange);
}

.page-about .about-node--current .about-node__year {
  color: var(--orange);
}

/* ---------- 图片区块通用 ---------- */
.page-about .about-pipe__figure,
.page-about .about-split__figure {
  margin: 0 0 30px;
}

.page-about .about-pipe__figure .media__frame,
.page-about .about-split__figure .media__frame {
  position: relative;
  overflow: hidden;
  clip-path: var(--cut);
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
}

.page-about .about-pipe__figure .media__img,
.page-about .about-split__figure .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.62) contrast(1.05) brightness(0.84);
}

.page-about .about-pipe__figure .media__caption,
.page-about .about-split__figure .media__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--gray-idx);
}

/* ---------- 内容流水线 ---------- */
.page-about .about-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-about .about-step__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  box-sizing: border-box;
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  background: var(--ink-800);
  border: 1px solid var(--line-cyan);
  clip-path: var(--cut-sm);
}

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

.page-about .about-step__title {
  margin: 6px 0 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .about-step__desc {
  margin: 9px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 团队分工 ---------- */
.page-about .about-roster {
  display: grid;
  gap: 16px;
}

@media (min-width: 700px) {
  .page-about .about-roster {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

.page-about .about-role {
  position: relative;
  padding: 24px 22px 26px;
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  clip-path: var(--cut);
  transition: background 200ms var(--ease), border-color 200ms var(--ease);
}

.page-about .about-role:hover {
  background: var(--ink-700);
  border-color: var(--line-cyan);
}

.page-about .about-role__num {
  display: block;
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-role:nth-child(2) .about-role__num {
  color: var(--amber);
}

.page-about .about-role:nth-child(3) .about-role__num {
  color: var(--orange);
}

.page-about .about-role:nth-child(4) .about-role__num {
  color: var(--steel);
}

.page-about .about-role__name {
  margin: 14px 0 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .about-role__desc {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--steel);
}

/* 旁注面板 */
.page-about .about-note {
  margin: 24px 0 0;
  padding: 20px 22px;
  background: var(--track);
  border-left: 2px solid var(--cyan);
  font-size: 15px;
  line-height: 1.82;
  color: var(--steel);
}

/* ---------- 双端分工 ---------- */
.page-about .about-split {
  margin-bottom: 30px;
}

.page-about .about-split__panel {
  margin-top: 22px;
  padding: 24px 22px 26px;
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  clip-path: var(--cut);
}

.page-about .about-split__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.8vw, 26px);
  font-weight: 500;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-split__desc {
  margin: 14px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-split__list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.page-about .about-split__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel);
}

.page-about .about-split__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 20px;
  margin: 0;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  list-style: none;
}

@media (min-width: 760px) {
  .page-about .about-partners {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-partners .stat-block__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
}

.page-about .about-partners .stat-block__value--cyan {
  color: var(--cyan);
}

.page-about .about-partners .stat-block__value--orange {
  color: var(--orange);
}

.page-about .about-partners .stat-block__label {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--gray-idx);
}

.page-about .about-partners__text {
  margin: 26px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--steel);
}

/* ---------- 专题与年报 ---------- */
.page-about .about-series {
  display: grid;
  gap: 18px;
}

@media (min-width: 820px) {
  .page-about .about-series {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 24px;
  }
}

.page-about .about-series__card {
  padding: 26px 22px 28px;
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--cyan);
  clip-path: var(--cut);
}

.page-about .about-series__card--alt {
  background: var(--ink-900);
  border-top-color: var(--orange);
}

.page-about .about-series__card .index-badge {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gray-idx);
}

.page-about .about-series__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.8vw, 26px);
  font-weight: 500;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-series__desc {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--steel);
}

/* ---------- 收束行动 ---------- */
.page-about .about-next {
  padding: 30px 24px 32px;
  background: linear-gradient(140deg, var(--ink-700) 0%, var(--ink-900) 62%);
  border: 1px solid var(--line-soft);
  clip-path: var(--cut);
}

.page-about .about-next__kicker {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .about-next__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 400;
  line-height: 1.26;
  color: var(--paper);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

@media (min-width: 1024px) {
  .page-about .about-next {
    padding: 38px 36px 40px;
  }
}
<<<END>>>