.page-about {
  --about-pad: 64px;
  background: var(--ink);
  color: var(--mist);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 48px) 0 56px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(55, 211, 232, 0.16), transparent 62%),
    radial-gradient(90% 80% at 6% 100%, rgba(255, 106, 31, 0.18), transparent 60%),
    var(--ink);
  color: var(--mist);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -18%;
  width: 64%;
  height: 240px;
  background: linear-gradient(90deg, transparent, rgba(255, 106, 31, 0.22));
  transform: rotate(-8deg);
  pointer-events: none;
}

.page-about .about-hero .breadcrumb {
  position: relative;
  z-index: 1;
  color: rgba(247, 249, 252, 0.66);
  margin-bottom: 28px;
}

.page-about .about-hero .breadcrumb__link {
  color: var(--orange-soft);
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

.page-about .about-hero__kicker {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  margin: 0 0 16px;
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-size: clamp(30px, 7.4vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--mist);
}

.page-about .about-hero__lede {
  max-width: 46ch;
  color: rgba(247, 249, 252, 0.82);
  margin: 0 0 28px;
}

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

.page-about .about-hero__board {
  position: relative;
  padding: 24px 20px 20px;
  border: 1px solid var(--ink-line);
  border-radius: var(--r-xl);
  background: var(--ink-2);
  box-shadow: 0 24px 24px -24px rgba(0, 0, 0, 0.6);
}

.page-about .about-hero__board .v-note {
  position: absolute;
  top: 16px;
  right: 10px;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--orange-soft);
  writing-mode: vertical-rl;
}

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

.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--ink-line);
}

.page-about .about-stats__num {
  font-size: 28px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.1;
}

.page-about .about-stats__label {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(247, 249, 252, 0.7);
}

/* ---------- 章节骨架 ---------- */
.page-about .chapter {
  padding: var(--about-pad) 0;
}

.page-about .chapter--ink {
  background: var(--ink);
  color: var(--mist);
}

.page-about .chapter--deep {
  background: var(--ink-2);
  color: var(--mist);
}

.page-about .chapter--cream {
  background: var(--cream);
  color: var(--brown);
}

.page-about .chapter__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .chapter__side {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .chapter__num {
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  letter-spacing: 0.02em;
}

.page-about .chapter__note {
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--graphite);
  writing-mode: horizontal-tb;
}

.page-about .chapter--ink .chapter__note,
.page-about .chapter--deep .chapter__note {
  color: var(--orange-soft);
}

.page-about .chapter--cream .chapter__note {
  color: var(--graphite);
}

.page-about .chapter__title {
  font-size: clamp(24px, 5vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  font-weight: 900;
  margin: 0 0 18px;
  color: var(--mist);
}

.page-about .chapter--cream .chapter__title {
  color: var(--brown);
}

.page-about .about-p {
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 16px;
  max-width: 66ch;
  color: rgba(247, 249, 252, 0.82);
}

.page-about .chapter--cream .about-p {
  color: var(--graphite);
}

/* ---------- 起点 ---------- */
.page-about .origin-tags {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .origin-tags__item {
  padding: 8px 16px;
  border-radius: var(--r-pill);
  border: 1px solid var(--ink-line);
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.06em;
}

/* ---------- 摘句过渡 ---------- */
.page-about .quote-band {
  background: var(--cream);
  color: var(--brown);
  padding: 56px 0;
  border-top: 1px solid rgba(26, 21, 18, 0.1);
  border-bottom: 1px solid rgba(26, 21, 18, 0.1);
}

.page-about .quote-band__text {
  margin: 0;
  font-size: clamp(24px, 5.4vw, 36px);
  line-height: 1.35;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--brown);
  border-left: 4px solid var(--orange);
  padding-left: 20px;
}

.page-about .quote-band__src {
  margin: 18px 0 0 24px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--graphite);
}

/* ---------- 历程 ---------- */
.page-about .roadmap-figure {
  margin: 24px 0 32px;
}

.page-about .roadmap-figure .media__frame {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--ink-line);
}

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

.page-about .media__cap {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(247, 249, 252, 0.62);
}

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 24px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange), var(--ink-line) 55%, rgba(46, 68, 104, 0.2));
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 28px 44px;
}

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

.page-about .timeline__dot {
  position: absolute;
  left: 0;
  top: 8px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--orange);
  border: 4px solid var(--ink-2);
  box-sizing: border-box;
}

.page-about .timeline__item:last-child .timeline__dot {
  background: var(--green);
}

.page-about .timeline__panel {
  padding: 18px 18px 20px;
  border: 1px solid var(--ink-line);
  border-radius: var(--r-lg);
  background: rgba(11, 27, 51, 0.55);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .timeline__panel:hover,
.page-about .timeline__panel:focus-within {
  transform: translateY(-4px);
  border-color: var(--orange);
  box-shadow: 0 24px 24px -24px rgba(0, 0, 0, 0.8);
}

.page-about .timeline__stage {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange-soft);
}

.page-about .timeline__title {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--mist);
}

.page-about .timeline__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 249, 252, 0.78);
}

.page-about .timeline__result {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--cyan);
  padding-top: 12px;
  border-top: 1px dashed var(--ink-line);
}

.page-about .timeline__result-label {
  display: inline-block;
  margin-right: 10px;
  padding: 2px 8px;
  border-radius: var(--r-pill);
  background: var(--orange);
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.1em;
}

/* ---------- 团队 ---------- */
.page-about .duty-band {
  list-style: none;
  margin: 24px 0 24px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .duty-band__seg {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--ink-line);
  background: var(--ink);
  color: var(--mist);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .duty-band__seg:hover,
.page-about .duty-band__seg:focus-within {
  transform: translateY(-4px);
  border-color: var(--orange);
  background: var(--ink-2);
}

.page-about .duty-band__name {
  font-size: 15px;
  font-weight: 500;
}

.page-about .duty-band__num {
  font-size: 22px;
  font-weight: 700;
  color: var(--orange);
}

.page-about .duty-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .duty-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .duty-card {
  padding: 20px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(26, 21, 18, 0.16);
  background: rgba(255, 255, 255, 0.55);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .duty-card:hover,
.page-about .duty-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--orange);
  box-shadow: 0 24px 24px -28px rgba(26, 21, 18, 0.7);
}

.page-about .duty-card__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--brown);
}

.page-about .duty-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite);
}

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

.page-about .duty-figure .media__frame {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid rgba(26, 21, 18, 0.16);
}

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

.page-about .duty-figure .media__cap {
  color: var(--graphite);
}

/* ---------- 分类体系 ---------- */
.page-about .tag-grid {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .tag-card {
  padding: 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--ink-line);
  background: rgba(11, 27, 51, 0.6);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .tag-card:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
}

.page-about .tag-card__name {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--orange-soft);
  letter-spacing: 0.02em;
}

.page-about .tag-card__use {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(247, 249, 252, 0.78);
}

.page-about .chart-card {
  margin-top: 28px;
  padding: 20px 18px 12px;
  border-radius: var(--r-lg);
  border: 1px solid var(--ink-line);
  background: rgba(11, 27, 51, 0.72);
}

.page-about .chart-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.page-about .chart-card__title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .chart-card__meta {
  margin: 0;
  font-size: 12px;
  color: var(--graphite);
  color: rgba(247, 249, 252, 0.6);
}

.page-about .chart {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .chart__axis {
  stroke: var(--ink-line);
  stroke-width: 1;
}

.page-about .chart__line {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.page-about .chart__dots circle {
  fill: var(--orange);
  stroke: var(--ink-2);
  stroke-width: 2;
}

.page-about .chart text {
  font-family: var(--font-mono);
  font-size: 11px;
  text-anchor: middle;
}

.page-about .chart__labels text {
  fill: rgba(247, 249, 252, 0.6);
}

.page-about .chart__values text {
  fill: var(--cyan);
  font-size: 12px;
}

/* ---------- 服务地区 ---------- */
.page-about .reach-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin: 24px 0;
}

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

.page-about .reach-figure .media__frame {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--ink-line);
}

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

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

.page-about .reach-stats__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px;
  border-radius: var(--r-md);
  border: 1px solid var(--ink-line);
  background: rgba(11, 27, 51, 0.6);
}

.page-about .reach-stats__num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--orange);
}

.page-about .reach-stats__unit {
  font-size: 12px;
  color: var(--cyan);
}

.page-about .reach-stats__label {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(247, 249, 252, 0.72);
}

/* ---------- 做法 ---------- */
.page-about .practice-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
  counter-reset: practice;
}

.page-about .practice-item {
  position: relative;
  padding: 20px 20px 20px 22px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(26, 21, 18, 0.16);
  background: rgba(255, 255, 255, 0.6);
  border-left: 4px solid var(--orange);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .practice-item:hover {
  transform: translateY(-4px);
  border-left-color: var(--orange-hot);
  box-shadow: 0 24px 24px -28px rgba(26, 21, 18, 0.7);
}

.page-about .practice-item__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--brown);
}

.page-about .practice-item__text {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .practice-item__result {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--orange-hot);
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta {
  padding: var(--about-pad) 0 calc(var(--about-pad) + 16px);
  background:
    radial-gradient(90% 80% at 92% 0%, rgba(55, 211, 232, 0.14), transparent 60%),
    var(--ink);
  color: var(--mist);
}

.page-about .about-cta__head {
  max-width: 60ch;
  margin-bottom: 28px;
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 5vw, 36px);
  line-height: 1.2;
  font-weight: 900;
  color: var(--mist);
}

.page-about .about-cta__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(247, 249, 252, 0.78);
}

.page-about .next-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .next-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 22px;
  border-radius: var(--r-lg);
  border: 1px solid var(--ink-line);
  background: var(--ink-2);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .next-card:hover,
.page-about .next-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--orange);
  box-shadow: 0 24px 24px -24px rgba(0, 0, 0, 0.8);
}

.page-about .next-card__kicker {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .next-card__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .next-card__text {
  margin: 0;
  flex: 1;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(247, 249, 252, 0.76);
}

.page-about .about-cta__foot {
  margin: 24px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 249, 252, 0.76);
}

.page-about .about-cta__link {
  color: var(--orange-soft);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-cta__link:hover {
  color: var(--orange);
}

.page-about a:focus-visible,
.page-about .timeline__panel:focus-within {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 桌面与平板 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

  .page-about .duty-band {
    flex-direction: row;
    gap: 12px;
  }

  .page-about .duty-band__seg {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
    min-height: 104px;
  }

  .page-about .duty-band__seg:nth-child(1) { flex: 24 1 0; }
  .page-about .duty-band__seg:nth-child(2) { flex: 18 1 0; }
  .page-about .duty-band__seg:nth-child(3) { flex: 31 1 0; }
  .page-about .duty-band__seg:nth-child(4) { flex: 13 1 0; }
}

@media (min-width: 900px) {
  .page-about {
    --about-pad: 88px;
  }

  .page-about .about-hero {
    padding: calc(var(--header-h) + 64px) 0 88px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-hero__board {
    padding: 28px 24px 24px;
  }

  .page-about .chapter__grid {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 0 48px;
  }

  .page-about .chapter__side {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    align-self: start;
  }

  .page-about .chapter__num {
    font-size: 44px;
  }

  .page-about .chapter__note {
    writing-mode: vertical-rl;
    letter-spacing: 0.3em;
    font-size: 12px;
  }

  .page-about .duty-layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
    gap: 28px;
  }

  .page-about .reach-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 28px;
  }

  .page-about .timeline__item {
    padding-left: 52px;
  }

  .page-about .timeline::before {
    left: 11px;
  }

  .page-about .quote-band {
    padding: 72px 0;
  }
}

@media (min-width: 1100px) {
  .page-about .reach-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__panel,
  .page-about .duty-band__seg,
  .page-about .duty-card,
  .page-about .tag-card,
  .page-about .practice-item,
  .page-about .next-card {
    transition: border-color var(--dur) var(--ease);
  }

  .page-about .timeline__panel:hover,
  .page-about .duty-band__seg:hover,
  .page-about .duty-card:hover,
  .page-about .tag-card:hover,
  .page-about .practice-item:hover,
  .page-about .next-card:hover {
    transform: none;
  }
}
<<<END>>>