/* ================= 品牌与团队页 page-about ================= */

.page-about {
  --about-line: rgba(20, 60, 94, .85);
  --about-card: rgba(14, 42, 68, .6);
  --about-glow: rgba(184, 255, 60, .07);
  color: var(--snow);
  padding-bottom: clamp(48px, 9vw, 104px);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: 16px;
}

.page-about .breadcrumb ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-about .breadcrumb a {
  color: var(--slate);
  text-decoration: none;
  transition: color .2s ease;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--neon);
}

.page-about .breadcrumb li[aria-current] {
  color: var(--metal);
}

.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--edge);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  border-bottom: 1px solid var(--edge);
  background:
    radial-gradient(640px 300px at 90% -20%, rgba(184, 255, 60, .10), transparent 70%),
    radial-gradient(520px 280px at 4% 120%, rgba(46, 211, 168, .08), transparent 72%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon), transparent 42%, var(--flame));
  opacity: .7;
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(30px, 5vw, 62px);
}

.page-about .about-hero-copy {
  min-width: 0;
}

.page-about .about-hero-copy .eyebrow {
  margin-bottom: 12px;
}

.page-about h1 {
  margin: 0 0 18px;
  font-family: var(--sans);
  font-size: clamp(29px, 6.2vw, 54px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--snow);
}

.page-about .about-lede {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.82;
  color: var(--slate);
}

.page-about .about-lede strong {
  color: var(--snow);
  font-weight: 700;
  border-bottom: 2px solid rgba(184, 255, 60, .5);
  padding-bottom: 1px;
}

.page-about .about-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--edge);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-metric {
  background: var(--ink);
  padding: 16px 14px 18px;
}

.page-about .about-metric-num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(20px, 4.4vw, 27px);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--neon);
  line-height: 1.1;
}

.page-about .about-metric:nth-child(3) .about-metric-num,
.page-about .about-metric:nth-child(4) .about-metric-num {
  color: var(--moss);
}

.page-about .about-metric-label {
  display: block;
  margin-top: 7px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--slate);
}

/* ---------- 章节索引 ---------- */
.page-about .about-index {
  position: relative;
  border-bottom: 1px solid var(--edge);
  background: linear-gradient(90deg, rgba(14, 42, 68, .72), rgba(6, 20, 35, .35));
}

.page-about .about-index-list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 10px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-index-list a {
  display: block;
  white-space: nowrap;
  padding: 7px 12px;
  border: 1px solid var(--edge);
  border-radius: 999px;
  font-size: 13px;
  color: var(--slate);
  text-decoration: none;
  transition: color .2s ease, background .2s ease, border-color .2s ease;
}

.page-about .about-index-list a:hover,
.page-about .about-index-list a:focus-visible,
.page-about .about-index-list a.is-current {
  color: var(--ink);
  background: var(--neon);
  border-color: var(--neon);
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  padding-top: clamp(40px, 7vw, 78px);
}

.page-about .about-head {
  max-width: 46em;
  margin-bottom: clamp(18px, 3vw, 28px);
}

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

.page-about .about-h2 {
  margin: 0 0 12px;
  font-size: clamp(21px, 4.4vw, 34px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--snow);
}

.page-about .about-sub {
  margin: 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--slate);
}

/* ---------- 我们在做什么 ---------- */
.page-about .about-split {
  display: grid;
  gap: 22px;
}

.page-about .about-copy p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--slate);
}

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

.page-about .about-aside {
  border: 1px solid var(--edge);
  border-left: 3px solid var(--moss);
  border-radius: var(--radius);
  padding: 18px 18px 20px;
  background: linear-gradient(160deg, rgba(46, 211, 168, .09), rgba(14, 42, 68, .5) 60%);
}

.page-about .about-aside-label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-about .about-aside-list {
  margin: 0;
}

.page-about .about-aside-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--edge);
}

.page-about .about-aside-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-aside-row dt {
  font-size: 13.5px;
  color: var(--slate);
}

.page-about .about-aside-row dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--snow);
}

.page-about .about-aside-row dd .num {
  color: var(--neon);
}

/* ---------- 服务版图 ---------- */
.page-about .about-map-figure {
  position: relative;
  margin: 0 0 22px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(600px 260px at 22% 18%, rgba(46, 211, 168, .16), transparent 68%),
    radial-gradient(520px 240px at 82% 76%, rgba(201, 162, 126, .12), transparent 70%),
    var(--panel);
}

.page-about .about-map-figure img,
.page-about .about-shot img,
.page-about .about-strip img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-map-figure .media-cap,
.page-about .about-shot .media-cap,
.page-about .about-strip .media-cap {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--edge);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--metal);
  background: rgba(6, 20, 35, .6);
}

.page-about .about-map-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .about-map-card {
  position: relative;
  padding: 16px 15px 18px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  background: var(--about-card);
  outline: none;
  transition: border-color .25s ease, background .25s ease, transform .25s ease;
}

.page-about .about-map-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--neon);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .32s ease;
}

.page-about .about-map-card:hover,
.page-about .about-map-card:focus-visible {
  border-color: var(--neon);
  background: rgba(14, 42, 68, .92);
  transform: translateY(-2px);
}

.page-about .about-map-card:hover::after,
.page-about .about-map-card:focus-visible::after {
  transform: scaleX(1);
}

.page-about .about-map-card h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--snow);
}

.page-about .about-map-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--slate);
}

/* ---------- 三支团队 ---------- */
.page-about .about-teams {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-team {
  display: flex;
  flex-direction: column;
  padding: 18px 16px 20px;
  border: 1px solid var(--edge);
  border-top: 2px solid var(--metal);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(14, 42, 68, .85), rgba(6, 20, 35, .55));
}

.page-about .about-team--data {
  border-top-color: var(--neon);
}

.page-about .about-team--editor {
  border-top-color: var(--moss);
}

.page-about .about-team--service {
  border-top-color: var(--sand);
}

.page-about .about-team-role {
  margin: 0 0 12px;
  color: var(--slate);
}

.page-about .about-team-num {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: clamp(26px, 5vw, 34px);
  font-weight: 600;
  line-height: 1;
  color: var(--snow);
}

.page-about .about-team--data .about-team-num .num {
  color: var(--neon);
}

.page-about .about-team--editor .about-team-num .num {
  color: var(--moss);
}

.page-about .about-team--service .about-team-num .num {
  color: var(--sand);
}

.page-about .about-team-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--slate);
}

.page-about .about-shot {
  margin: 22px 0 0;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
}

/* ---------- 版本演进时间线 ---------- */
.page-about .about-strip {
  margin: 0 0 26px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(700px 200px at 14% 0%, rgba(184, 255, 60, .10), transparent 70%),
    var(--ink);
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 4px 0 0 22px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 24px;
  width: 2px;
  background: linear-gradient(180deg, var(--neon) 0%, var(--moss) 34%, var(--edge) 68%, var(--flame) 100%);
  opacity: .55;
}

.page-about .about-node {
  position: relative;
  padding: 0 0 26px;
  outline: none;
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--neon);
  box-shadow: 0 0 0 4px var(--about-glow);
  transition: background .25s ease, border-color .25s ease;
}

.page-about .about-node:hover::before,
.page-about .about-node:focus-within::before {
  background: var(--neon);
}

.page-about .about-node-year {
  display: inline-block;
  margin-bottom: 9px;
  padding: 3px 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--neon);
  border: 1px solid rgba(184, 255, 60, .32);
  border-radius: 3px;
}

.page-about .about-node h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--snow);
}

.page-about .about-node p {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--slate);
}

.page-about .about-node-more {
  margin-top: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--edge);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--metal);
}

/* ---------- 合作与内容生态 ---------- */
.page-about .about-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .about-partner {
  padding: 18px 16px 20px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  background: rgba(14, 42, 68, .4);
}

.page-about .about-partner-num {
  display: block;
  margin-bottom: 11px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-about .about-partner h3 {
  margin: 0 0 8px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--snow);
}

.page-about .about-partner p {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.76;
  color: var(--slate);
}

.page-about .about-partners-note {
  margin: 20px 0 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-partners-note a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 255, 60, .38);
  transition: border-color .2s ease, color .2s ease;
}

.page-about .about-partners-note a:hover,
.page-about .about-partners-note a:focus-visible {
  color: var(--snow);
  border-bottom-color: var(--snow);
}

/* ---------- 怎么开始 ---------- */
.page-about .about-section--next {
  padding-top: clamp(44px, 8vw, 92px);
}

.page-about .about-next-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .about-next-card {
  display: block;
  padding: 18px 16px 20px;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(14, 42, 68, .92), rgba(6, 20, 35, .68));
  text-decoration: none;
  transition: border-color .22s ease, transform .22s ease, background .22s ease;
}

.page-about .about-next-card strong {
  display: block;
  margin-bottom: 7px;
  font-size: 15px;
  font-weight: 700;
  color: var(--snow);
}

.page-about .about-next-card span {
  display: block;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--slate);
}

.page-about .about-next-card:hover,
.page-about .about-next-card:focus-visible {
  border-color: var(--neon);
  background: linear-gradient(150deg, rgba(20, 60, 94, .95), rgba(6, 20, 35, .8));
  transform: translateY(-3px);
}

.page-about .about-region {
  margin: 26px 0 0;
  padding-top: 15px;
  border-top: 1px solid var(--edge);
  font-size: 13px;
  line-height: 1.75;
  letter-spacing: .05em;
  color: var(--metal);
}

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

@media (min-width: 760px) {
  .page-about .about-teams,
  .page-about .about-partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-partners-note {
    margin-top: 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    align-items: end;
    gap: 48px;
  }

  .page-about .about-metrics {
    margin-bottom: 6px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, .85fr);
    gap: 46px;
    align-items: start;
  }

  .page-about .about-aside {
    padding: 20px 20px 22px;
  }

  .page-about .about-timeline {
    padding-left: 30px;
  }

  .page-about .about-timeline::before {
    left: 8px;
  }

  .page-about .about-node::before {
    left: -30px;
    top: 7px;
  }

  .page-about .about-node {
    padding-bottom: 20px;
  }

  .page-about .about-node-more {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .34s ease, opacity .3s ease, margin-top .34s ease;
  }

  .page-about .about-node:hover .about-node-more,
  .page-about .about-node:focus-within .about-node-more {
    max-height: 260px;
    margin-top: 11px;
    opacity: 1;
  }

  .page-about .about-shot {
    margin-top: 28px;
  }
}

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

  .page-about .about-next-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-map-card,
  .page-about .about-next-card,
  .page-about .about-node::before,
  .page-about .about-node-more {
    transition: none;
  }
}
<<<END>>>