/* ===== 核心团队 / 平台历程 · page-about ===== */

.page-about {
  --about-shadow-board: 6px 8px 0 -1px var(--jx-paper), 6px 8px 0 0 var(--jx-line-soft), 0 1px 0 rgba(14, 20, 32, .05), 0 18px 34px -28px rgba(14, 20, 32, .5);
  --about-shadow-card: 0 1px 0 rgba(14, 20, 32, .04), 0 14px 28px -22px rgba(14, 20, 32, .5);
  --about-block-gap: clamp(22px, 4vw, 42px);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .jx-breadcrumb {
  margin: 22px 0 16px;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  position: relative;
  margin-bottom: clamp(28px, 5vw, 56px);
  padding: clamp(22px, 4vw, 48px) clamp(18px, 3.6vw, 46px);
  background-color: var(--jx-snow);
  background-image: repeating-linear-gradient(90deg, var(--jx-line-soft) 0 1px, transparent 1px 46px);
  background-position: left top;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-about .about-hero__lead .jx-title {
  margin: 12px 0 0;
  max-width: 15em;
}

.page-about .about-hero__lead .jx-lede {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 36em;
  color: var(--jx-body-text);
}

/* 首屏数据条 */
.page-about .about-facts {
  margin: 0;
  border-top: 1px solid var(--jx-line);
  border-bottom: 1px solid var(--jx-line);
  background-color: rgba(230, 227, 220, .42);
}

.page-about .about-facts__row {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  padding: 12px 14px 12px 16px;
  border-bottom: 1px solid var(--jx-line-soft);
}

.page-about .about-facts__row:last-child {
  border-bottom: 0;
}

.page-about .about-facts__row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 3px;
  height: 0;
  background-color: var(--jx-brass);
  transform: translateY(-50%);
  transition: height var(--jx-dur) var(--jx-ease);
}

.page-about .about-facts__row:hover::before {
  height: 62%;
}

.page-about .about-facts__key {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--jx-stone);
}

.page-about .about-facts__val {
  margin: 0;
  font-family: var(--jx-font-num);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--jx-indigo);
}

/* ---------- 版面骨架 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  column-gap: 0;
}

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

.page-about .about-layout__rail {
  display: none;
}

/* ---------- 堆叠画板 ---------- */
.page-about .about-board {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0 0 var(--about-block-gap);
  padding: clamp(20px, 4vw, 34px) clamp(18px, 3.4vw, 34px);
  background-color: var(--jx-snow);
  border: 1px solid var(--jx-line);
  box-shadow: var(--about-shadow-board);
}

.page-about .about-board:last-of-type {
  margin-bottom: 0;
}

.page-about .about-board__margin {
  display: flex;
  align-items: center;
}

.page-about .about-board__margin .jx-vertical {
  writing-mode: horizontal-tb;
  font-family: var(--jx-font-num);
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--jx-brass);
}

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

.page-about .about-board__content > .jx-heading {
  margin: 0 0 clamp(14px, 2vw, 22px);
  color: var(--jx-ink);
}

.page-about .about-board__content > p {
  max-width: 62ch;
  margin: 0;
  color: var(--jx-body-text);
  font-size: 16px;
  line-height: 1.78;
}

.page-about .about-board__content > p + p {
  margin-top: 14px;
}

.page-about .about-board__content p a {
  color: var(--jx-cobalt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-board__content p a:hover {
  color: var(--jx-indigo);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: clamp(18px, 2.8vw, 28px) 0 0;
}

.page-about .about-figure .jx-media {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background-color: var(--jx-paper);
  border: 1px solid var(--jx-line);
}

.page-about .about-figure--wide .jx-media {
  aspect-ratio: 14 / 9;
}

.page-about .about-figure--square .jx-media {
  aspect-ratio: 1 / 1;
  max-width: 520px;
}

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

/* ---------- 四个小组 ---------- */
.page-about .about-teams {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-about .about-team {
  position: relative;
  margin: 0;
  padding: clamp(16px, 2.4vw, 22px) clamp(16px, 2.4vw, 24px) clamp(20px, 2.8vw, 26px);
  background-color: rgba(230, 227, 220, .46);
  border: 1px solid var(--jx-line);
  box-shadow: var(--about-shadow-card);
  transition: transform var(--jx-dur) var(--jx-ease),
              border-color var(--jx-dur) var(--jx-ease),
              box-shadow var(--jx-dur) var(--jx-ease);
}

.page-about .about-team::after {
  content: "";
  position: absolute;
  left: clamp(16px, 2.4vw, 24px);
  bottom: 0;
  width: 24px;
  height: 3px;
  background-color: var(--jx-vermilion);
  transition: width var(--jx-dur) var(--jx-ease);
}

.page-about .about-team:hover {
  transform: translateY(-2px);
  border-color: var(--jx-brass);
  box-shadow: var(--jx-shadow-2);
}

.page-about .about-team:hover::after {
  width: 52px;
}

.page-about .about-team__name {
  margin: 0 0 8px;
  font-size: 17px;
  letter-spacing: .04em;
  color: var(--jx-indigo);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--jx-body-text);
}

/* ---------- 版本时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  position: relative;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0 0 0 26px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background-image: repeating-linear-gradient(180deg, var(--jx-brass) 0 5px, transparent 5px 11px);
  opacity: .75;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(18px, 2.6vw, 26px);
  outline: none;
}

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

.page-about .about-timeline__node {
  position: absolute;
  left: -22px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background-color: var(--jx-snow);
  border: 2px solid var(--jx-brass);
  transition: background-color var(--jx-dur) var(--jx-ease),
              border-color var(--jx-dur) var(--jx-ease),
              box-shadow var(--jx-dur) var(--jx-ease);
}

.page-about .about-timeline__card {
  padding: clamp(14px, 2vw, 20px) clamp(16px, 2.4vw, 24px);
  background-color: rgba(230, 227, 220, .4);
  border-left: 3px solid var(--jx-paper);
  transition: background-color var(--jx-dur) var(--jx-ease),
              border-color var(--jx-dur) var(--jx-ease),
              transform var(--jx-dur) var(--jx-ease);
}

.page-about .about-timeline__item:hover .about-timeline__card,
.page-about .about-timeline__item:focus-visible .about-timeline__card {
  background-color: rgba(230, 227, 220, .72);
  border-left-color: var(--jx-vermilion);
  transform: translateX(3px);
}

.page-about .about-timeline__item:hover .about-timeline__node,
.page-about .about-timeline__item:focus-visible .about-timeline__node {
  background-color: var(--jx-vermilion);
  border-color: var(--jx-vermilion);
  box-shadow: 0 0 0 4px rgba(193, 59, 42, .14);
}

.page-about .about-timeline__item:focus-visible {
  outline: 2px solid var(--jx-violet);
  outline-offset: 4px;
  border-radius: 2px;
}

.page-about .about-timeline__ver {
  margin: 0 0 6px;
  font-family: var(--jx-font-num);
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--jx-vermilion);
}

.page-about .about-timeline__card .jx-subheading {
  margin: 0 0 8px;
  color: var(--jx-ink);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--jx-body-text);
}

/* ---------- 巡检索引带 ---------- */
.page-about .about-routine {
  margin: clamp(18px, 2.6vw, 28px) 0 0;
}

.page-about .about-routine .jx-index-strip__row {
  padding-left: 14px;
  transition: background-color var(--jx-dur) var(--jx-ease),
              box-shadow var(--jx-dur) var(--jx-ease);
}

.page-about .about-routine .jx-index-strip__row:hover {
  background-color: rgba(247, 246, 242, .06);
  box-shadow: inset 3px 0 0 var(--jx-brass);
}

.page-about .about-routine__note {
  margin: clamp(14px, 2vw, 20px) 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--jx-stone);
}

/* ---------- 色彩说明 ---------- */
.page-about .about-palette {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  background-color: var(--jx-line-soft);
  border: 1px solid var(--jx-line-soft);
}

.page-about .about-palette__row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 14px 16px 16px;
  background-color: var(--jx-snow);
  border-top: 3px solid var(--jx-paper);
}

.page-about .about-palette__row:nth-child(1) {
  border-top-color: var(--jx-vermilion);
}

.page-about .about-palette__row:nth-child(2) {
  border-top-color: var(--jx-indigo);
}

.page-about .about-palette__row:nth-child(3) {
  border-top-color: var(--jx-brass);
}

.page-about .about-palette__row:nth-child(4) {
  border-top-color: var(--jx-paper);
}

.page-about .about-palette__row dt {
  font-family: var(--jx-font-num);
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--jx-ink);
}

.page-about .about-palette__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--jx-body-text);
}

/* ---------- 合作区按钮 ---------- */
.page-about .about-partners__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 26px);
}

/* ---------- 右侧竖排刻度 ---------- */
@media (min-width: 1180px) {
  .page-about .about-layout {
    grid-template-columns: minmax(0, 1fr) 56px;
    column-gap: clamp(20px, 3vw, 44px);
  }

  .page-about .about-layout__rail {
    display: block;
    position: relative;
  }

  .page-about .about-layout__rail::before {
    content: "";
    position: absolute;
    top: 10px;
    bottom: 10px;
    left: 0;
    width: 10px;
    background-image: linear-gradient(180deg, var(--jx-brass) 0 1px, transparent 1px);
    background-size: 10px 26px;
    background-repeat: repeat-y;
    opacity: .42;
  }

  .page-about .about-layout__rail-note {
    position: sticky;
    top: 104px;
    display: block;
    margin-left: 18px;
    writing-mode: vertical-rl;
    font-family: var(--jx-font-num);
    font-size: 12px;
    letter-spacing: .34em;
    color: var(--jx-stone);
  }
}

/* ---------- 收尾 ---------- */
.page-about .about-outro {
  position: relative;
  margin: clamp(30px, 5vw, 56px) 0 clamp(24px, 4vw, 40px);
  padding: clamp(24px, 4vw, 44px) clamp(20px, 3.6vw, 44px);
  background-color: var(--jx-indigo);
  border: 1px solid var(--jx-indigo);
  overflow: hidden;
}

.page-about .about-outro::before,
.page-about .about-outro::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  border: 1px solid var(--jx-brass);
}

.page-about .about-outro::before {
  top: 10px;
  left: 10px;
  border-right: 0;
  border-bottom: 0;
}

.page-about .about-outro::after {
  right: 10px;
  bottom: 10px;
  border-left: 0;
  border-top: 0;
}

.page-about .about-outro .jx-heading {
  margin: 0 0 12px;
  color: var(--jx-snow);
}

.page-about .about-outro p {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--jx-on-dark);
}

.page-about .about-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-about .about-outro__links a {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border: 1px solid rgba(247, 246, 242, .3);
  border-radius: 2px;
  color: var(--jx-snow);
  font-size: 15px;
  letter-spacing: .03em;
  text-decoration: none;
  transition: border-color var(--jx-dur) var(--jx-ease),
              background-color var(--jx-dur) var(--jx-ease),
              transform var(--jx-dur) var(--jx-ease);
}

.page-about .about-outro__links a:hover {
  border-color: var(--jx-brass);
  background-color: rgba(190, 143, 51, .16);
  transform: translateY(-2px);
}

.page-about .about-outro__links a:focus-visible {
  outline: 2px solid var(--jx-violet);
  outline-offset: 3px;
}

/* ---------- 断点增强 ---------- */
@media (min-width: 720px) {
  .page-about .about-teams {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

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

@media (min-width: 860px) {
  .page-about .about-board {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: clamp(16px, 2.4vw, 32px);
    padding: clamp(26px, 3.6vw, 46px) clamp(26px, 3.6vw, 50px) clamp(26px, 3.6vw, 44px) clamp(14px, 1.8vw, 22px);
  }

  .page-about .about-board__margin {
    justify-content: center;
    align-self: start;
    padding-top: 8px;
    border-right: 1px solid var(--jx-line-soft);
    padding-right: 8px;
  }

  .page-about .about-board__margin .jx-vertical {
    writing-mode: vertical-rl;
    letter-spacing: .34em;
  }

  .page-about .about-board--offset {
    margin-left: clamp(0px, 3vw, 42px);
  }
}

@media (min-width: 940px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 68px);
  }

  .page-about .about-hero__lead .jx-title {
    font-size: clamp(52px, 5.6vw, 84px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team,
  .page-about .about-team::after,
  .page-about .about-timeline__card,
  .page-about .about-timeline__node,
  .page-about .about-facts__row::before,
  .page-about .about-outro__links a {
    transition: none;
  }

  .page-about .about-team:hover,
  .page-about .about-timeline__item:hover .about-timeline__card,
  .page-about .about-outro__links a:hover {
    transform: none;
  }
}