.page-about {
  --about-sec: clamp(46px, 8vw, 92px);
  --about-radius: var(--r-lg);
  display: block;
  background: var(--bg-deep);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .about-crumb {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(18px, 3.4vw, 36px) 0 clamp(38px, 6vw, 74px);
}

.page-about .about-hero__frame {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 54px);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  background:
    radial-gradient(140% 120% at 100% 0%, rgba(38, 247, 208, 0.13), transparent 58%),
    linear-gradient(180deg, var(--bg-panel), var(--bg-panel-2));
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, var(--scan) 0 1px, transparent 1px 7px);
  opacity: 0.2;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(34px, 7vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.01em;
}

.page-about .about-hero__lead {
  margin: 0 0 26px;
  max-width: 68ch;
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--ink-muted);
}

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

.page-about .about-hero__panel {
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__panel-title {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-muted);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
}

.page-about .about-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .about-hero__num {
  font-family: var(--font-num);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.1;
  color: var(--amber);
}

.page-about .about-hero__label {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
}

@media (min-width: 920px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(260px, 0.85fr);
    align-items: end;
  }
  .page-about .about-hero__panel {
    padding-top: 0;
    padding-left: clamp(20px, 3vw, 34px);
    border-top: 0;
    border-left: 1px solid var(--line);
  }
}

/* ---------- 章节基座 ---------- */
.page-about .about-section {
  position: relative;
  padding: var(--about-sec) 0;
}

.page-about .about-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: var(--gutter);
  right: var(--gutter);
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent 70%);
}

.page-about .about-head {
  max-width: 760px;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .about-head__label {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(26px, 4.4vw, 46px);
  line-height: 1.12;
}

/* ---------- 起点与使命 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 50px);
}

.page-about .about-split__body p {
  margin: 0 0 1.1em;
  font-size: 15.5px;
  color: var(--ink-muted);
}

.page-about .about-split__body p:first-of-type {
  font-size: 17.5px;
  color: var(--ink);
}

.page-about .about-aside {
  position: relative;
  padding: 24px 22px 24px 26px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(27, 42, 91, 0.55), rgba(13, 35, 30, 0.92));
}

.page-about .about-aside::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--amber));
}

.page-about .about-aside__mark {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .about-aside__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

@media (min-width: 960px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.55fr) minmax(250px, 0.85fr);
    align-items: start;
  }
}

/* ---------- 数据服务方式 ---------- */
.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-flow__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-top: 1px solid var(--line-soft);
  transition: border-color var(--t) ease;
}

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

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

.page-about .about-flow__num {
  padding-top: 5px;
  font-family: var(--font-num);
  font-size: 14px;
  color: var(--teal);
  transition: color var(--t) ease;
}

.page-about .about-flow__item:hover .about-flow__num {
  color: var(--cyan);
}

.page-about .about-flow__text h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(18px, 2.4vw, 24px);
}

.page-about .about-flow__text p {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  color: var(--ink-muted);
}

.page-about .about-metrics {
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--line-soft);
  overflow: hidden;
}

.page-about .about-metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  background: var(--bg-panel);
}

.page-about .about-metric__num {
  font-family: var(--font-num);
  font-size: 28px;
  line-height: 1;
  color: var(--amber);
}

.page-about .about-metric__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-muted);
}

@media (min-width: 700px) {
  .page-about .about-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

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

.page-about .about-role {
  position: relative;
  overflow: hidden;
  padding: 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  transition: border-color var(--t) ease, background-color var(--t) ease, transform var(--t) ease;
}

.page-about .about-role::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, var(--scan) 0 1px, transparent 1px 9px);
  opacity: 0.12;
}

.page-about .about-role:hover,
.page-about .about-role:focus-within {
  border-color: var(--cyan);
  background: var(--bg-panel-2);
  transform: translateY(-2px);
}

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

.page-about .about-role__index {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--teal);
}

.page-about .about-role__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
}

.page-about .about-role__duty {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--ink-muted);
}

.page-about .about-role__note {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line-soft);
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-muted);
  opacity: 0.62;
  transition: opacity var(--t) ease, color var(--t) ease;
}

.page-about .about-role:hover .about-role__note,
.page-about .about-role:focus-within .about-role__note {
  opacity: 1;
  color: var(--ink);
}

.page-about .about-team__figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  overflow: hidden;
}

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

.page-about .about-team__figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  color: var(--ink-muted);
}

@media (min-width: 560px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 发展历程 ---------- */
.page-about .about-timeline__figure {
  position: relative;
  margin: 0 0 clamp(26px, 4vw, 46px);
  border: 1px solid var(--line-soft);
  border-radius: var(--about-radius);
  overflow: hidden;
  background: var(--bg-panel-2);
}

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

.page-about .about-timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 44px);
}

.page-about .about-years {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-about .about-years a {
  padding: 5px 10px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  transition: color var(--t) ease, border-color var(--t) ease, background-color var(--t) ease;
}

.page-about .about-years a:hover {
  color: var(--ink);
  background: rgba(38, 247, 208, 0.05);
}

.page-about .about-years a[data-active] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(38, 247, 208, 0.08);
}

.page-about .about-stages {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-stage {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 40px) clamp(20px, 3vw, 34px);
  border-left: 1px solid var(--line-soft);
}

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

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 10px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(38, 247, 208, 0.12);
}

.page-about .about-stage--amber::before {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 194, 75, 0.14);
}

.page-about .about-stage__year {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-about .about-stage__title {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(19px, 2.6vw, 26px);
}

.page-about .about-stage__body {
  margin: 0 0 12px;
  max-width: 70ch;
  font-size: 15px;
  color: var(--ink-muted);
}

@media (min-width: 900px) {
  .page-about .about-timeline {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: start;
  }
  .page-about .about-years {
    position: sticky;
    top: 132px;
    flex-direction: column;
    gap: 4px;
  }
}

/* ---------- 使用场景 ---------- */
.page-about .about-scenes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 1.8vw, 20px);
}

.page-about .about-scene {
  position: relative;
  padding: 22px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--bg-panel);
  transition: border-color var(--t) ease, background-color var(--t) ease;
}

.page-about .about-scene:hover {
  border-color: var(--cyan);
  background: var(--bg-panel-2);
}

.page-about .about-scene--lead {
  background: linear-gradient(150deg, rgba(14, 143, 122, 0.24), var(--bg-panel) 64%);
}

.page-about .about-scene__tag {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-scene__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  line-height: 1.2;
}

.page-about .about-scene__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-muted);
}

@media (min-width: 720px) {
  .page-about .about-scenes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-about .about-scenes {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }
  .page-about .about-scene {
    grid-column: span 4;
  }
  .page-about .about-scene--lead {
    grid-column: span 8;
  }
}

/* ---------- 长期理由 ---------- */
.page-about .about-reasons {
  border-top: 1px solid var(--line-soft);
}

.page-about .about-reason {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px 24px;
  padding: clamp(18px, 2.6vw, 28px) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-reason__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  color: var(--ink);
}

.page-about .about-reason__body {
  margin: 0;
  max-width: 72ch;
  font-size: 15px;
  line-height: 1.76;
  color: var(--ink-muted);
}

@media (min-width: 760px) {
  .page-about .about-reason {
    grid-template-columns: minmax(150px, 0.36fr) minmax(0, 1fr);
    align-items: baseline;
  }
}

/* ---------- 收尾 CTA ---------- */
.page-about .about-cta {
  margin-top: clamp(30px, 4vw, 46px);
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  background:
    radial-gradient(120% 150% at 0% 0%, rgba(27, 42, 91, 0.72), transparent 62%),
    var(--bg-panel);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .about-cta__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(22px, 3.2vw, 34px);
}

.page-about .about-cta__body {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  color: var(--ink-muted);
}

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

@media (min-width: 860px) {
  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.3fr) auto;
    align-items: center;
  }
}

/* ---------- 本地服务 ---------- */
.page-about .about-map {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 44px);
  align-items: center;
}

.page-about .about-map__figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--bg-panel-2);
}

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

.page-about .about-map__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.15;
}

.page-about .about-map__body p {
  margin: 0 0 1em;
  max-width: 66ch;
  font-size: 15px;
  color: var(--ink-muted);
}

.page-about .about-map__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 8px;
}

@media (min-width: 940px) {
  .page-about .about-map {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-scene,
  .page-about .about-flow__item,
  .page-about .about-years a,
  .page-about .about-role__note {
    transition: none;
  }
  .page-about .about-role:hover,
  .page-about .about-role:focus-within {
    transform: none;
  }
}