.page-about {
  --about-panel: rgba(42, 16, 70, .74);
  --about-panel-strong: rgba(42, 16, 70, .92);
  --about-gold-line: rgba(232, 179, 75, .42);
  --about-grape-line: rgba(107, 47, 160, .55);
  --about-vine-line: rgba(60, 140, 90, .45);
  padding-bottom: 4px;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 36px 0 52px;
  border-bottom: 2px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -70px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(107, 47, 160, .5), rgba(107, 47, 160, 0) 68%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-about .about-hero-copy {
  min-width: 0;
}

.page-about .about-hero h1 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(29px, 6.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -.02em;
  margin: 10px 0 16px;
  color: var(--paper);
  max-width: 18em;
}

.page-about .about-hero .lead {
  font-size: 17px;
  line-height: 1.85;
  color: var(--vine-light);
  max-width: 34em;
  margin: 0;
}

.page-about .about-index {
  margin-top: 26px;
}

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

.page-about .about-index-link {
  display: inline-block;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--vine-light);
  border: 2px solid var(--about-vine-line);
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: background .18s ease-out, color .18s ease-out, border-color .18s ease-out;
}

.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  background: var(--grape);
  border-color: var(--grape-light);
  color: var(--paper);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-content: start;
}

.page-about .about-stat {
  border: 2px solid var(--about-gold-line);
  background: var(--about-panel-strong);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--gold);
}

.page-about .about-stat-unit {
  font-size: 15px;
  margin-left: 4px;
  letter-spacing: .04em;
  color: var(--gold-deep);
}

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

/* ---------- 通用区块 ---------- */
.page-about .about-section {
  padding: 52px 0;
  border-bottom: 2px solid var(--line);
}

.page-about .about-section:last-of-type {
  border-bottom: 0;
}

.page-about .about-head {
  max-width: 46em;
}

.page-about .about-section h2 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(23px, 4.2vw, 32px);
  line-height: 1.28;
  letter-spacing: -.01em;
  margin: 8px 0 14px;
  color: var(--paper);
}

.page-about .about-intro {
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--vine-light);
  max-width: 36em;
}

/* ---------- 内容方向 ---------- */
.page-about .about-vine {
  display: block;
  width: 100%;
  height: 34px;
  margin: 22px 0 6px;
  color: var(--vine);
  opacity: .5;
}

.page-about .about-scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 12px;
}

.page-about .about-scope-card {
  position: relative;
  border: 2px solid var(--about-grape-line);
  background: var(--about-panel);
  border-radius: var(--radius-lg);
  padding: 18px 18px 20px;
  box-shadow: var(--shadow-hard-sm);
  transition: transform .2s ease-out, border-color .2s ease-out;
}

.page-about .about-scope-card:hover {
  transform: translateY(-4px);
  border-color: var(--grape-light);
}

.page-about .about-scope-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-about .about-scope-card .card-title {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .about-scope-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--vine-light);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team-figure {
  margin: 26px 0 26px;
  border: 2px solid var(--about-grape-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hard);
}

.page-about .about-team-figure img {
  width: 100%;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-team-card {
  padding: 20px 18px 22px;
  border: 2px solid var(--line);
  background: var(--about-panel);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-team-count {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .03em;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-about .about-team-card .card-title {
  margin: 0 0 10px;
  font-size: 20px;
  color: var(--paper);
}

.page-about .about-team-card p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--vine-light);
}

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

.page-about .about-team-note {
  color: var(--mist);
  font-size: 14px;
}

/* ---------- 更新节奏 ---------- */
.page-about .about-rhythm {
  position: relative;
  padding: 56px 0;
  border-bottom: 2px solid var(--line);
}

.page-about .about-rhythm-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .2;
}

.page-about .about-rhythm-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-rhythm-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.page-about .about-timeline {
  list-style: none;
  margin: 14px 0 0;
  padding: 0 0 0 26px;
  border-left: 2px solid var(--about-grape-line);
  display: grid;
  gap: 20px;
}

.page-about .about-node {
  position: relative;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--vine);
  box-shadow: 0 0 0 4px rgba(60, 140, 90, .18);
}

.page-about .about-node-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-about .about-node-text {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-about .about-archive-block {
  border: 2px solid var(--line);
  background: var(--about-panel-strong);
  border-radius: var(--radius-lg);
  padding: 20px 18px 22px;
  margin-bottom: 16px;
}

.page-about .about-archive-block:last-child {
  margin-bottom: 0;
}

.page-about .about-archive-block h2 {
  font-size: clamp(21px, 3.6vw, 28px);
  margin: 0 0 14px;
}

.page-about .about-block-title {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .about-archive-block p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--vine-light);
  max-width: 34em;
}

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

.page-about .about-review-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.page-about .about-review-figure {
  margin: 0;
  border: 2px solid var(--about-gold-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-review-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

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

.page-about .about-order-list li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  align-items: baseline;
  gap: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--vine-light);
  border-bottom: 1px dashed var(--line);
  padding-bottom: 10px;
}

.page-about .about-order-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-order-list .mono {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-about .about-order-list strong {
  color: var(--paper);
  font-weight: 700;
  margin-right: 4px;
}

.page-about .about-block-lead {
  color: var(--paper);
  font-size: 15px;
}

.page-about .about-flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-flow-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--vine-light);
}

.page-about .about-flow-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .78em;
  width: 7px;
  height: 7px;
  background: var(--vine);
  transform: rotate(45deg);
}

.page-about .about-flow-list a,
.page-about .about-reach-hint a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color .18s ease-out;
}

.page-about .about-flow-list a:hover,
.page-about .about-reach-hint a:hover {
  color: var(--grape-light);
}

/* ---------- 使用场景 ---------- */
.page-about .about-scene-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .about-where-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-metric {
  border: 2px solid var(--about-vine-line);
  background: rgba(60, 140, 90, .1);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.page-about .about-metric-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 23px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .02em;
  color: var(--vine-light);
}

.page-about .about-metric-label {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 联系入口 ---------- */
.page-about .about-reach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 26px;
}

.page-about .about-reach-panel {
  border: 2px solid var(--about-gold-line);
  background: var(--about-panel-strong);
  border-radius: var(--radius-lg);
  padding: 20px 18px 22px;
  box-shadow: var(--shadow-hard-sm);
}

.page-about .about-reach-panel .contact-list {
  margin: 0;
}

.page-about .about-reach-note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-reach-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
  border: 2px dashed var(--about-grape-line);
  border-radius: var(--radius-lg);
  padding: 22px 18px;
  background: rgba(107, 47, 160, .12);
}

.page-about .about-reach-hint {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--vine-light);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

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

@media (min-width: 760px) {
  .page-about .about-review-grid {
    grid-template-columns: minmax(0, 1fr) minmax(170px, 230px);
  }
}

@media (min-width: 900px) {
  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr) minmax(0, .82fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 48px 0 60px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, .8fr);
    align-items: start;
    gap: 40px;
  }

  .page-about .about-section {
    padding: 64px 0;
  }

  .page-about .about-rhythm {
    padding: 68px 0;
  }

  .page-about .about-rhythm-grid {
    grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
    gap: 36px;
  }

  .page-about .about-timeline-col {
    position: sticky;
    top: 96px;
  }

  .page-about .about-reach-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 24px;
  }
}

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

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

  .page-about .about-archive-block {
    padding: 24px 24px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-scope-card,
  .page-about .about-index-link,
  .page-about .about-flow-list a,
  .page-about .about-reach-hint a {
    transition: none;
  }

  .page-about .about-scope-card:hover {
    transform: none;
  }
}