.page-about {
  --about-rule: rgba(181, 52, 42, 0.55);
  --about-hair: rgba(20, 17, 15, 0.14);
  color: var(--paper);
}

.page-about .band--paper {
  background: var(--paper);
  color: var(--ink);
}

.page-about .band--ink {
  background: var(--ink);
  color: var(--paper);
}

.page-about .band--ink-soft {
  background: var(--ink-soft);
  color: var(--paper);
}

.page-about .band--jade {
  background: var(--jade);
  color: #ffffff;
}

.page-about .band--paper .lede,
.page-about .band--paper p {
  color: var(--ink);
}

.page-about .band--ink .lede,
.page-about .band--ink p,
.page-about .band--ink-soft .lede,
.page-about .band--ink-soft p {
  color: var(--paper);
}

.page-about .band--jade .lede,
.page-about .band--jade p {
  color: rgba(255, 255, 255, 0.92);
}

/* ---------- 首屏：纵向门廊 + 对角错位色块 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 3.6rem 0 3rem;
  background: var(--ink);
  color: var(--paper);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -34%;
  width: 82%;
  height: 140%;
  background: var(--ink-soft);
  transform: rotate(12deg);
  border-radius: var(--radius-lg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: 2%;
  bottom: -30%;
  width: 46%;
  height: 74%;
  background: rgba(47, 122, 107, 0.26);
  transform: rotate(12deg);
  border-radius: var(--radius-lg);
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
}

.page-about .about-breadcrumb {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--smoke);
  margin-bottom: 1.6rem;
}

.page-about .about-breadcrumb a {
  color: var(--gold-soft);
  text-decoration: none;
}

.page-about .about-breadcrumb a:hover,
.page-about .about-breadcrumb a:focus-visible {
  color: var(--gold);
  text-decoration: underline;
}

.page-about .about-hero .eyebrow--gold {
  color: var(--gold);
  margin-bottom: 0.6rem;
}

.page-about .about-hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 7.6vw, 3.3rem);
  line-height: 1.18;
  letter-spacing: 0.01em;
  margin: 0 0 1rem;
  max-width: 22ch;
  color: var(--paper);
}

.page-about .about-hero-lede {
  margin: 0 0 1.8rem;
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(244, 237, 226, 0.88);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.4rem;
}

.page-about .about-hero-actions .btn {
  text-decoration: none;
  white-space: nowrap;
}

.page-about .about-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.2rem;
}

.page-about .about-fact {
  border-top: 1px solid var(--ink-line-strong);
  padding-top: 0.7rem;
}

.page-about .about-fact-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.45rem;
  line-height: 1.2;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-about .about-fact-label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--smoke);
}

/* ---------- 章节通用头部 ---------- */

.page-about .about-head {
  max-width: 66ch;
  margin-bottom: 2.2rem;
}

.page-about .about-head .eyebrow {
  display: block;
  margin-bottom: 0.55rem;
}

.page-about .about-head .display-2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 5.6vw, 2.15rem);
  line-height: 1.3;
  margin: 0 0 0.9rem;
}

.page-about .about-head--light .eyebrow {
  color: var(--jade-light);
}

.page-about .about-head .lede {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.85;
}

/* ---------- 图文分栏 ---------- */

.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.2rem;
}

.page-about .about-split-text p {
  margin: 0 0 1.05rem;
  font-size: 0.97rem;
  line-height: 1.85;
}

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

.page-about .media {
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--ink-soft);
}

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

.page-about .media-caption {
  display: block;
  margin-top: 0.7rem;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--smoke);
}

.page-about .band--ink .media-caption,
.page-about .band--ink-soft .media-caption {
  color: var(--smoke);
}

/* ---------- 团队 ---------- */

.page-about .about-team-figure {
  margin: 0 0 2rem;
}

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

.page-about .about-team-card {
  background: rgba(244, 237, 226, 0.05);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.1rem 1.3rem;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-about .about-team-card:hover,
.page-about .about-team-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--gold);
  background: rgba(216, 169, 58, 0.08);
}

.page-about .about-team-num {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.page-about .about-team-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.08rem;
  margin: 0 0 0.5rem;
  color: var(--paper);
}

.page-about .about-team-text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(244, 237, 226, 0.82);
}

.page-about .about-flow-wrap {
  margin-top: 2.4rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--ink-line);
}

.page-about .about-sub-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 1.2rem;
  color: var(--gold-soft);
}

.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
  counter-reset: flow;
}

.page-about .about-flow-item {
  border-left: 2px solid var(--cinnabar);
  padding-left: 1rem;
}

.page-about .about-flow-step {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--jade-light);
  margin-bottom: 0.35rem;
}

.page-about .about-flow-item p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(244, 237, 226, 0.84);
}

.page-about .about-flow-note {
  margin: 1.4rem 0 0;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--smoke);
}

/* ---------- 排序依据 ---------- */

.page-about .about-order-list {
  list-style: none;
  margin: 0 0 2.2rem;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.3rem;
}

.page-about .about-order-item {
  border-left: 3px solid var(--cinnabar);
  padding: 0.2rem 0 0.2rem 1rem;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-order-item:hover,
.page-about .about-order-item:focus-within {
  border-color: var(--gold);
  transform: translateX(4px);
}

.page-about .about-order-kicker {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  margin-bottom: 0.35rem;
}

.page-about .about-order-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 0.45rem;
  color: var(--paper);
}

.page-about .about-order-text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(244, 237, 226, 0.84);
}

.page-about .about-slot-note {
  border: 1px solid rgba(216, 169, 58, 0.45);
  border-radius: var(--radius-md);
  padding: 1.3rem 1.2rem 1.4rem;
  background: rgba(216, 169, 58, 0.07);
}

.page-about .about-slot-tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ink);
  background: var(--gold);
  border-radius: var(--radius-pill);
  padding: 0.22rem 0.7rem;
  margin: 0 0 0.8rem;
}

.page-about .about-slot-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 0.6rem;
  color: var(--gold-soft);
}

.page-about .about-slot-note p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.85;
  color: rgba(244, 237, 226, 0.85);
}

/* ---------- 分类演进 ---------- */

.page-about .about-tax-compare {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem 1rem;
  padding: 0.9rem 0 1.1rem;
  border-bottom: 1px solid var(--about-hair);
  margin-bottom: 1rem;
}

.page-about .about-tax-old,
.page-about .about-tax-new {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--ink);
}

.page-about .about-tax-num {
  font-size: 1.5rem;
  color: var(--cinnabar);
  margin-right: 0.2rem;
}

.page-about .about-tax-arrow {
  color: var(--cinnabar);
  font-size: 1.1rem;
}

.page-about .about-tax-hint {
  font-size: 0.78rem;
  line-height: 1.6;
  color: #6b6259;
  flex: 1 1 240px;
}

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

.page-about .about-tax-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.3rem 0.9rem;
  padding: 0.85rem 0.2rem;
  border-top: 1px solid var(--about-hair);
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-tax-item:last-child {
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-tax-item:hover {
  background: rgba(216, 169, 58, 0.14);
  transform: translateX(4px);
}

.page-about .about-tax-item .index-num {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--cinnabar);
  grid-row: 1 / span 2;
  padding-top: 0.15rem;
}

.page-about .about-tax-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
}

.page-about .about-tax-desc {
  font-size: 0.85rem;
  line-height: 1.75;
  color: #554c44;
}

/* ---------- 服务地区 ---------- */

.page-about .about-region-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
}

.page-about .about-region-card {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.1rem 1.3rem;
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-region-card:hover,
.page-about .about-region-card:focus-within {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.16);
}

.page-about .about-region-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 0.55rem;
  color: #ffffff;
}

.page-about .about-region-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.85;
}

/* ---------- 阶段性历程 ---------- */

.page-about .about-history-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.2rem;
}

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

.page-about .about-seal-figure .media img {
  border-radius: var(--radius-lg);
}

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

.page-about .stage {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.4rem 1rem;
  padding: 1.3rem 0.5rem 1.3rem 0.2rem;
  border-top: 1px solid var(--about-rule);
  border-radius: var(--radius-sm);
  transition: background-color var(--dur) var(--ease);
  scroll-margin-top: 7rem;
}

.page-about .stage:last-child {
  border-bottom: 1px solid var(--about-rule);
}

.page-about .stage:hover,
.page-about .stage:focus-within {
  background: rgba(216, 169, 58, 0.14);
}

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

.page-about .stage-dot {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--cinnabar);
  color: var(--cinnabar);
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  background: transparent;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .stage:hover .stage-dot,
.page-about .stage:focus-within .stage-dot {
  background: var(--cinnabar);
  color: var(--paper);
}

.page-about .stage-years {
  display: block;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--cinnabar);
  margin: 0 0 0.35rem;
}

.page-about .stage-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  line-height: 1.45;
  margin: 0 0 0.5rem;
  color: var(--ink);
}

.page-about .stage-text {
  margin: 0 0 0.7rem;
  font-size: 0.9rem;
  line-height: 1.82;
  color: #4c443c;
}

.page-about .stage-notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.page-about .stage-notes li {
  position: relative;
  padding-left: 0.95rem;
  font-size: 0.83rem;
  line-height: 1.72;
  color: #5d554c;
}

.page-about .stage-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cinnabar);
}

/* ---------- 收束 ---------- */

.page-about .about-next-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
}

.page-about .about-next-card {
  display: block;
  height: 100%;
  padding: 1.15rem 1.05rem 1.25rem;
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-md);
  color: var(--paper);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-about .about-next-card:hover,
.page-about .about-next-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--gold);
  background: rgba(216, 169, 58, 0.1);
}

.page-about .about-next-card:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-about .about-next-tag {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.page-about .about-next-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.page-about .about-next-desc {
  display: block;
  font-size: 0.83rem;
  line-height: 1.72;
  color: var(--smoke);
}

/* ---------- 桌面增强 ---------- */

@media (min-width: 700px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.2rem 1.6rem;
  }

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

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

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

  .page-about .about-tax-item {
    grid-template-columns: auto minmax(130px, 190px) minmax(0, 1fr);
    align-items: baseline;
  }

  .page-about .about-tax-item .index-num {
    grid-row: auto;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 4.6rem 0 3.8rem;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 3.4rem;
    align-items: start;
  }

  .page-about .about-figure {
    margin-top: 2.6rem;
  }

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

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

  .page-about .about-history-grid {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-seal-figure {
    position: sticky;
    top: 7rem;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team-card,
  .page-about .about-order-item,
  .page-about .about-tax-item,
  .page-about .about-region-card,
  .page-about .about-next-card,
  .page-about .stage,
  .page-about .stage-dot {
    transition: none;
  }
}