.page-about {
  background:
    radial-gradient(120% 80% at 88% 0%, rgba(63, 224, 200, .10), transparent 62%),
    var(--ink-green-deep);
  color: var(--cream);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 28px 0 48px;
  background:
    radial-gradient(110% 90% at 10% 0%, rgba(63, 224, 200, .16), transparent 58%),
    radial-gradient(90% 70% at 95% 30%, rgba(255, 122, 47, .12), transparent 60%),
    linear-gradient(165deg, var(--ink-green) 0%, var(--ink-green-deep) 78%);
  border-bottom-left-radius: var(--radius-l);
  border-bottom-right-radius: var(--radius-l);
}

.page-about .breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-about .breadcrumbs-item {
  color: var(--moss);
}

.page-about .breadcrumbs-item + .breadcrumbs-item::before {
  content: "/";
  margin-right: 8px;
  color: rgba(111, 140, 130, .55);
}

.page-about .breadcrumbs-item a {
  color: var(--moss);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .breadcrumbs-item a:hover,
.page-about .breadcrumbs-item a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .breadcrumbs-item[aria-current="page"] {
  color: var(--amber);
}

.page-about .about-hero-grid {
  display: grid;
  gap: 32px;
  margin-top: 26px;
}

.page-about .about-display {
  margin: 14px 0 0;
  font-size: clamp(38px, 10.5vw, 96px);
  line-height: .94;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--cream);
}

.page-about .about-display em {
  font-style: normal;
  color: var(--cyan);
}

.page-about .about-lede {
  max-width: 34em;
  margin: 22px 0 0;
  font-size: 16.5px;
  line-height: 1.78;
  color: rgba(244, 239, 230, .82);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero-figure {
  margin: 0;
}

.page-about .about-hero-media {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border-radius: var(--radius-l);
  border: 1px solid var(--edge-soft);
}

.page-about .figure-cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  line-height: 1.6;
  color: var(--moss);
}

/* ---------- 主体双栏 ---------- */
.page-about .about-body {
  display: grid;
  gap: 28px;
  padding: 44px 0 72px;
}

.page-about .about-toc-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-about .about-toc-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-toc-link {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--edge-soft);
  color: var(--moss);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.5;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-toc-link:hover,
.page-about .about-toc-link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(63, 224, 200, .08);
}

.page-about .about-toc-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--amber);
}

/* ---------- 面板 ---------- */
.page-about .about-panels {
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}

.page-about .about-panel {
  position: relative;
  overflow: hidden;
  padding: 26px 20px 30px;
  border-radius: var(--radius-l);
  border: 1px solid var(--edge-soft);
  background: linear-gradient(175deg, rgba(20, 22, 26, .94), rgba(14, 42, 35, .94));
  scroll-margin-top: 24px;
}

.page-about .about-panel--paper {
  background: var(--cream);
  color: var(--brown);
  border-color: rgba(42, 33, 24, .14);
}

.page-about .about-panel--next {
  background:
    radial-gradient(100% 120% at 100% 0%, rgba(255, 122, 47, .16), transparent 60%),
    linear-gradient(175deg, rgba(20, 22, 26, .96), rgba(14, 42, 35, .96));
}

.page-about .about-panel--accent::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -60px;
  width: 250px;
  height: 250px;
  transform: rotate(14deg);
  background: repeating-linear-gradient(115deg, rgba(63, 224, 200, .22) 0 1px, transparent 1px 16px);
  opacity: .55;
  pointer-events: none;
}

.page-about .about-panel-head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 12px;
  margin-bottom: 18px;
}

.page-about .about-panel-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-about .about-panel--paper .about-panel-num {
  color: var(--orange);
}

.page-about .about-panel-title {
  flex: 1 1 16em;
  margin: 0;
  font-size: clamp(21px, 4.8vw, 32px);
  line-height: 1.25;
  letter-spacing: -.01em;
  min-width: 0;
}

.page-about .about-chip {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--edge);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
  white-space: nowrap;
}

.page-about .about-panel--paper .about-chip {
  border-color: rgba(255, 122, 47, .5);
  color: #C4521A;
}

.page-about .about-text p {
  max-width: 34em;
  margin: 0 0 15px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 239, 230, .84);
}

.page-about .about-panel--paper .about-text p {
  color: #3B3025;
}

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

.page-about .about-intro {
  max-width: 34em;
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 239, 230, .78);
}

.page-about .about-panel--paper .about-intro {
  color: #4A3E32;
}

.page-about .about-footnote {
  max-width: 34em;
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  font-size: 14px;
  line-height: 1.75;
  color: var(--moss);
}

/* ---------- 规模数字 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-stat {
  padding: 15px 14px 17px;
  border-radius: var(--radius-s);
  border: 1px solid var(--edge-soft);
  background: rgba(244, 239, 230, .05);
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 7vw, 42px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-about .about-stat:nth-child(3n) .about-stat-num {
  color: var(--amber);
}

.page-about .about-stat-label {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--moss);
}

/* ---------- 工序时间轴 ---------- */
.page-about .about-steps {
  position: relative;
  display: grid;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-steps::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: 12px;
  width: 2px;
  transform: skewX(-8deg);
  transform-origin: top center;
  background: linear-gradient(180deg, var(--cyan), var(--orange) 55%, rgba(111, 140, 130, .2));
}

.page-about .about-step {
  position: relative;
  padding-left: 38px;
}

.page-about .about-step::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink-green-deep);
  border: 2px solid var(--cyan);
}

.page-about .about-step-time {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--orange);
}

.page-about .about-step-title {
  margin: 5px 0 6px;
  font-size: 17px;
  line-height: 1.4;
}

.page-about .about-step p {
  max-width: 34em;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 239, 230, .72);
}

.page-about .about-figure {
  margin: 26px 0 0;
}

.page-about .about-figure .figure-media {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-m);
  border: 1px solid var(--edge-soft);
}

.page-about .about-panel--paper .about-figure .figure-media {
  border-color: rgba(42, 33, 24, .16);
}

.page-about .about-panel--paper .figure-cap {
  color: #6A5B4C;
}

/* ---------- 团队 ---------- */
.page-about .about-team-wrap {
  display: grid;
  gap: 26px;
}

.page-about .about-team-chart {
  display: block;
  width: 100%;
  max-width: 230px;
  height: auto;
  margin: 0 auto;
}

.page-about .about-legend {
  display: grid;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-legend-item {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-about .about-legend-dot {
  width: 12px;
  height: 12px;
  margin-top: 6px;
  border-radius: 4px;
}

.page-about .about-legend-dot.is-data { background: var(--ink-green); }
.page-about .about-legend-dot.is-video { background: var(--orange); }
.page-about .about-legend-dot.is-ops { background: var(--amber); }
.page-about .about-legend-dot.is-tech { background: var(--moss); }

.page-about .about-legend-count {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: #C4521A;
}

.page-about .about-legend-text {
  max-width: 34em;
  margin: 4px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: #4A3E32;
}

/* ---------- 标签页 ---------- */
.page-about .about-tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-about .about-tab {
  appearance: none;
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--edge);
  background: transparent;
  color: var(--moss);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.4;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-tab:hover {
  color: var(--cream);
  border-color: var(--cyan);
}

.page-about .about-tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-green-deep);
  font-weight: 600;
}

.page-about .about-tab:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-about .about-tab-panel {
  padding-top: 4px;
}

.page-about .about-tab-panel p {
  max-width: 34em;
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 239, 230, .8);
}

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

/* ---------- 服务承诺 ---------- */
.page-about .about-service-grid {
  display: grid;
  gap: 22px;
}

.page-about .about-figure--service {
  margin: 0;
}

.page-about .about-service-list {
  display: grid;
  gap: 12px;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .about-service-list li {
  padding: 14px 16px;
  border-radius: var(--radius-s);
  background: rgba(14, 42, 35, .07);
  border-left: 3px solid var(--orange);
  font-size: 15px;
  line-height: 1.7;
  color: #4A3E32;
}

.page-about .about-service-list strong {
  color: var(--ink-green);
}

/* ---------- 出口 ---------- */
.page-about .about-next-grid {
  display: grid;
  gap: 12px;
}

.page-about .about-next-link {
  display: block;
  padding: 18px 18px 20px;
  border-radius: var(--radius-m);
  border: 1px solid var(--edge-soft);
  background: rgba(244, 239, 230, .04);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-next-link:hover,
.page-about .about-next-link:focus-visible {
  border-color: var(--cyan);
  background: rgba(63, 224, 200, .07);
  transform: translateY(-3px);
}

.page-about .about-next-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--orange);
  text-transform: uppercase;
}

.page-about .about-next-title {
  display: block;
  margin-top: 8px;
  font-size: 18px;
  line-height: 1.45;
  color: var(--cream);
}

.page-about .about-next-desc {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--moss);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .about-panel {
    padding: 32px 28px 36px;
  }

  .page-about .about-next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-team-wrap {
    grid-template-columns: 230px minmax(0, 1fr);
    align-items: center;
    gap: 34px;
  }

  .page-about .about-team-chart {
    margin: 0;
  }

  .page-about .about-service-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
    gap: 30px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 34px 0 60px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: end;
    gap: 48px;
    margin-top: 30px;
  }

  .page-about .about-lede {
    font-size: 18px;
  }

  .page-about .about-panels {
    gap: 36px;
  }

  .page-about .about-panel {
    padding: 40px 44px 44px;
  }

  .page-about .about-panel:nth-child(even) {
    margin-left: 34px;
  }

  .page-about .about-step p {
    font-size: 15.5px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
    padding: 56px 0 96px;
  }

  .page-about .about-toc {
    position: sticky;
    top: 32px;
  }

  .page-about .about-toc-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-about .about-toc-link {
    display: flex;
    border-color: transparent;
    padding: 8px 12px;
  }

  .page-about .about-toc-link:hover,
  .page-about .about-toc-link:focus-visible {
    background: transparent;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-next-link,
  .page-about .about-toc-link {
    transition: none;
  }

  .page-about .about-next-link:hover {
    transform: none;
  }
}