.page-about {
  --about-soft: #C7D5EA;
  --about-rail: 92px;
  --about-measure: 68ch;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: .01em;
}

.page-about p {
  margin: 0;
}

.page-about a {
  color: inherit;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 6px 0 clamp(36px, 6vw, 76px);
  border-bottom: var(--edge) solid var(--line-blue);
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(63, 224, 255, .15), transparent 58%),
    radial-gradient(90% 80% at 100% 18%, rgba(245, 185, 66, .12), transparent 60%),
    var(--ink-900);
}

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

.page-about .hero-main {
  border: var(--edge) solid var(--line-blue);
  border-left: 6px solid var(--cyan);
  background: linear-gradient(180deg, rgba(12, 23, 48, .94), rgba(5, 10, 22, .62));
  box-shadow: var(--shadow-hard);
  padding: clamp(22px, 3.4vw, 42px);
}

.page-about .hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.page-about .hero-title {
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.08;
  margin-bottom: 18px;
}

.page-about .hero-lede {
  max-width: 62ch;
  font-size: 16px;
  color: var(--about-soft);
  margin-bottom: 26px;
}

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

.page-about .hero-side {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  border: var(--edge) solid var(--line-blue);
  background: var(--ink-800);
  padding: clamp(20px, 2.6vw, 30px);
}

.page-about .hero-side .annotation--vertical {
  flex: 0 0 auto;
}

.page-about .hero-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  width: 100%;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-stat-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.1;
  color: var(--gold);
  letter-spacing: .02em;
}

.page-about .about-stat-label {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* ---------- 展区通用 ---------- */
.page-about .about-zone {
  padding: clamp(44px, 7vw, 92px) 0;
  border-bottom: var(--edge) solid var(--line-blue);
}

.page-about .zone-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-about .zone-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-about .zone-title {
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.14;
}

.page-about .zone-note {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-about .zone-body {
  display: grid;
  gap: var(--gap);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .zone-main {
  display: grid;
  gap: clamp(20px, 2.8vw, 34px);
  min-width: 0;
}

.page-about .about-text {
  max-width: var(--about-measure);
  color: var(--about-soft);
}

.page-about .sub-title {
  font-size: 22px;
  padding-top: 6px;
  border-top: var(--edge) solid rgba(238, 244, 251, .22);
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .zone-body {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
  }

  .page-about .zone-rail {
    display: block;
    position: relative;
    padding-top: 4px;
  }

  .page-about .zone-rail span {
    font-family: var(--font-mono);
    font-size: 44px;
    font-weight: 700;
    color: var(--gold);
    opacity: .5;
    line-height: 1;
  }

  .page-about .zone-rail::after {
    content: "";
    position: absolute;
    left: 13px;
    top: 64px;
    bottom: 4px;
    width: var(--edge);
    background: linear-gradient(180deg, var(--line-blue), rgba(29, 44, 74, 0));
  }
}

.page-about .zone-rail {
  display: none;
}

/* ---------- 展区 01 发展脉络 ---------- */
.page-about .zone--origin {
  background:
    linear-gradient(180deg, rgba(12, 23, 48, .55), rgba(5, 10, 22, .2)),
    var(--ink-900);
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 4px 0 4px 26px;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: var(--edge);
  background: linear-gradient(180deg, var(--cyan), var(--line-blue) 72%, rgba(29, 44, 74, 0));
}

.page-about .tl-node {
  position: relative;
  display: block;
  margin-bottom: 14px;
  border: var(--edge) solid var(--line-blue);
  background: rgba(12, 23, 48, .72);
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 18px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 3px solid var(--cyan);
}

.page-about .tl-node:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: var(--shadow-hard);
}

.page-about .tl-node[open] {
  border-color: var(--cyan-deep);
}

.page-about .tl-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .tl-summary::-webkit-details-marker {
  display: none;
}

.page-about .tl-summary::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
}

.page-about .tl-node[open] .tl-summary::after {
  content: "－";
}

.page-about .tl-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: .1em;
}

.page-about .tl-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
}

.page-about .tl-hint {
  display: none;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

@media (min-width: 620px) {
  .page-about .tl-hint {
    display: inline;
  }
}

.page-about .tl-body {
  padding: 0 18px 18px;
  border-top: 1px dashed var(--line-blue);
  margin-top: -2px;
  padding-top: 14px;
}

.page-about .tl-body p {
  max-width: var(--about-measure);
  font-size: 15px;
  color: var(--about-soft);
}

/* ---------- 图版 ---------- */
.page-about .zone-figure {
  display: block;
  margin: 0;
  border: var(--edge) solid var(--line-blue);
  background: var(--ink-800);
  aspect-ratio: auto;
  overflow: hidden;
}

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

.page-about .zone-figure .media-caption {
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
  border-top: var(--edge) solid var(--line-blue);
  background: rgba(5, 10, 22, .6);
}

/* ---------- 展区 02 内容生产 ---------- */
.page-about .zone--craft {
  background:
    radial-gradient(100% 70% at 0% 0%, rgba(63, 224, 255, .16), transparent 60%),
    linear-gradient(160deg, var(--indigo), #251A4A 78%);
}

.page-about .zone--craft .craft-step {
  border-color: rgba(238, 244, 251, .28);
}

.page-about .craft-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .craft-step {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 190px;
  padding: 20px;
  border: var(--edge) solid rgba(238, 244, 251, .22);
  background: rgba(5, 10, 22, .36);
  transition: transform .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-about .craft-step:hover,
.page-about .craft-step:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan);
  background: rgba(5, 10, 22, .62);
}

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

.page-about .craft-step-title {
  font-size: 20px;
}

.page-about .craft-step-text {
  font-size: 15px;
  color: var(--about-soft);
}

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

/* ---------- 展区 03 数据覆盖 ---------- */
.page-about .zone--scale {
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
}

.page-about .zone--scale .data-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-about .zone--scale .data-table th,
.page-about .zone--scale .data-table td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line-blue);
  vertical-align: top;
}

.page-about .zone--scale .data-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
  background: rgba(5, 10, 22, .72);
  border-bottom: var(--edge) solid var(--line-blue);
  white-space: nowrap;
}

.page-about .zone--scale .data-table tbody th {
  font-weight: 700;
  color: var(--paper);
  white-space: nowrap;
}

.page-about .zone--scale .data-table tbody td {
  color: var(--about-soft);
}

.page-about .zone--scale .data-table tbody tr:hover th,
.page-about .zone--scale .data-table tbody tr:hover td {
  background: rgba(63, 224, 255, .07);
}

.page-about .table-wrap {
  overflow-x: auto;
  border: var(--edge) solid var(--line-blue);
  background: rgba(5, 10, 22, .38);
}

.page-about .scale-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .scale-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  border: var(--edge) solid var(--line-blue);
  background: var(--ink-900);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-about .scale-stat:hover {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.page-about .scale-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 32px);
  color: var(--gold);
  line-height: 1.1;
}

.page-about .scale-label {
  font-size: 13px;
  color: var(--muted);
}

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

/* ---------- 展区 04 团队 ---------- */
.page-about .zone--team {
  background:
    radial-gradient(90% 70% at 100% 0%, rgba(75, 227, 180, .14), transparent 62%),
    var(--deep-teal);
}

.page-about .team-svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 720px;
  border: var(--edge) solid rgba(238, 244, 251, .2);
  background: rgba(5, 10, 22, .42);
  padding: 14px;
}

.page-about .team-svg .svg-label {
  fill: var(--paper);
  font-family: var(--font-body);
  font-size: 13px;
}

.page-about .team-svg .svg-value {
  fill: var(--gold);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.page-about .team-svg .bar-cyan {
  fill: var(--cyan);
  opacity: .88;
}

.page-about .team-svg .bar-gold {
  fill: var(--gold);
  opacity: .88;
}

.page-about .team-svg .bar-outline {
  fill: none;
  stroke: var(--muted);
  stroke-width: 2;
  stroke-dasharray: 6 5;
}

.page-about .team-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .team-card {
  padding: 18px;
  border: var(--edge) solid rgba(238, 244, 251, .2);
  border-left: 4px solid var(--mint);
  background: rgba(5, 10, 22, .44);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-about .team-card:nth-child(2) {
  border-left-color: var(--cyan);
}

.page-about .team-card:nth-child(3) {
  border-left-color: var(--gold);
}

.page-about .team-card:nth-child(4) {
  border-left-color: var(--signal);
}

.page-about .team-card:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
}

.page-about .team-card-title {
  font-size: 19px;
  margin-bottom: 8px;
}

.page-about .team-card-text {
  font-size: 15px;
  color: var(--about-soft);
}

.page-about .team-note {
  border: var(--edge) solid rgba(238, 244, 251, .2);
  background: rgba(5, 10, 22, .5);
  padding: 18px;
}

.page-about .team-note p {
  max-width: var(--about-measure);
  font-size: 15px;
  color: var(--about-soft);
}

@media (min-width: 760px) {
  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 展区 05 合作与荣誉 ---------- */
.page-about .zone--partners {
  background:
    radial-gradient(90% 70% at 0% 100%, rgba(245, 185, 66, .14), transparent 58%),
    linear-gradient(160deg, var(--wine), #40121F 80%);
}

.page-about .partner-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .partner-card {
  padding: 22px;
  border: var(--edge) solid rgba(238, 244, 251, .26);
  background: rgba(5, 10, 22, .42);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-about .partner-card:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
}

.page-about .partner-value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 40px;
  line-height: 1;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-about .partner-title {
  font-size: 20px;
  margin-bottom: 8px;
}

.page-about .partner-text {
  font-size: 15px;
  color: var(--about-soft);
}

.page-about .honor-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .honor-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px;
  border: var(--edge) solid rgba(238, 244, 251, .26);
  background: rgba(5, 10, 22, .38);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}

.page-about .honor-card:hover {
  transform: translateY(-4px);
  border-color: var(--mint);
  box-shadow: var(--shadow-hard);
}

.page-about .honor-year {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 22px;
  color: var(--mint);
  line-height: 1.2;
}

.page-about .honor-body {
  display: block;
}

.page-about .honor-name {
  display: block;
  font-weight: 700;
  margin-bottom: 4px;
}

.page-about .honor-desc {
  display: block;
  font-size: 14px;
  color: var(--about-soft);
}

@media (min-width: 760px) {
  .page-about .partner-grid,
  .page-about .honor-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 展区 06 服务范围 ---------- */
.page-about .zone--reach {
  background:
    linear-gradient(180deg, rgba(63, 224, 255, .06), transparent 42%),
    repeating-linear-gradient(90deg, rgba(29, 44, 74, .55) 0 1px, transparent 1px 72px),
    var(--ink-900);
}

.page-about .reach-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .reach-tile {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  min-height: 96px;
  padding: 16px 14px;
  border: var(--edge) solid var(--line-blue);
  background: var(--ink-800);
  transition: transform .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-about .reach-tile:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
  background: rgba(14, 111, 127, .35);
}

.page-about .reach-name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
}

.page-about .reach-meta {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-about .reach-note {
  grid-column: 1 / -1;
  padding: 18px;
  border: var(--edge) dashed var(--line-blue);
  background: rgba(5, 10, 22, .6);
  font-size: 14px;
  color: var(--about-soft);
}

.page-about .reach-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (min-width: 760px) {
  .page-about .reach-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

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

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta-wrap {
  padding: clamp(40px, 6vw, 80px) 0 clamp(52px, 7vw, 96px);
  background: var(--ink-900);
}

.page-about .about-cta {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 4vw, 46px);
  border: var(--edge) solid var(--line-blue);
  background:
    linear-gradient(120deg, rgba(63, 224, 255, .14), rgba(245, 185, 66, .12)),
    var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-about .cta-title {
  font-size: clamp(24px, 3.6vw, 34px);
  margin-bottom: 12px;
}

.page-about .cta-text {
  max-width: var(--about-measure);
  color: var(--about-soft);
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 900px) {
  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) minmax(0, auto);
    align-items: center;
  }

  .page-about .cta-actions {
    max-width: 320px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
  }
}