/* ============================================
   品牌故事页 · 页面专属样式
   作用域：.page-about
   ============================================ */
.page-about {
  --about-section-pad: clamp(56px, 8vw, 120px) 0;
  --about-panel-text: var(--c-bg);
  background: var(--c-bg);
  overflow-x: clip;
}

.page-about .breadcrumb {
  margin: 0 var(--gutter);
  padding: 24px 0 8px;
}

/* ---------- HERO ---------- */
.page-about .story-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding: 12px var(--gutter) 56px;
  align-items: center;
}

.page-about .story-hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-about .story-hero-index {
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-secondary);
  margin: 0 0 18px;
  padding: 6px 12px;
  background: var(--c-light-surface);
  border-left: 4px solid var(--c-secondary);
}

.page-about .story-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(2.1rem, 5.2vw, 3.6rem);
  line-height: 1.06;
  margin: 0 0 18px;
}

.page-about .story-hero-lede {
  margin: 0 0 28px;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--c-muted);
  max-width: 56ch;
}

.page-about .hero-stat-list {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  width: 100%;
  padding-top: 18px;
  border-top: 3px solid var(--c-primary);
}

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

.page-about .hero-stat-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.1rem;
  line-height: 1;
}

.page-about .hero-stat-label {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.page-about .story-hero-visual {
  position: relative;
  margin: 0;
  aspect-ratio: 10 / 7;
  overflow: hidden;
  background: var(--c-dark-surface);
}

.page-about .story-hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(.95);
}

.page-about .story-hero-visual::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  height: 28px;
  background: var(--c-secondary);
  -webkit-clip-path: polygon(12px 0, 100% 0, 100% 100%, 0 100%);
  clip-path: polygon(12px 0, 100% 0, 100% 100%, 0 100%);
}

.page-about .story-chapter-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 28px;
}

.page-about .story-chapter-link {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .06em;
  text-decoration: none;
  color: var(--c-primary);
  border-bottom: 2px solid var(--c-line);
  padding-bottom: 4px;
  transition: border-color .3s, color .3s;
}

.page-about .story-chapter-link span {
  color: var(--c-secondary);
  margin-right: 6px;
  font-weight: 700;
}

.page-about .story-chapter-link:hover {
  border-color: var(--c-accent);
  color: var(--c-secondary);
}

/* ---------- 章节通用 ---------- */
.page-about .story-about-section,
.page-about .story-timeline-section,
.page-about .story-team-section,
.page-about .story-recognition-section {
  padding: var(--about-section-pad);
}

.page-about .split-aside {
  margin-bottom: 28px;
}

.page-about .split-aside .section-index {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 3rem;
  line-height: 1;
  color: var(--c-secondary);
  margin-bottom: 12px;
}

.page-about .split-aside .section-note {
  margin: 0;
  color: var(--c-muted);
  font-size: .95rem;
}

.page-about .section-title {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
  margin: 0 0 24px;
  padding-bottom: 18px;
  border-bottom: 3px solid var(--c-primary);
}

/* ---------- 我们是谁 ---------- */
.page-about .about-copy {
  display: grid;
  gap: 18px;
  margin-bottom: 36px;
}

.page-about .about-copy p {
  margin: 0;
  line-height: 1.85;
}

.page-about .about-copy .about-strong {
  font-size: 1.125rem;
  font-weight: 600;
}

.page-about .about-value-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .value-cell {
  background: var(--c-light-surface);
  padding: 22px 24px;
  border-left: 4px solid var(--c-secondary);
}

.page-about .value-num {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--c-secondary);
}

.page-about .value-cell .value-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  text-transform: uppercase;
  margin: 8px 0 6px;
}

.page-about .value-cell p {
  margin: 0;
  color: var(--c-muted);
  font-size: .95rem;
  line-height: 1.6;
}

/* ---------- 大事记 · 时间轴 ---------- */
.page-about .story-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .story-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 24px;
  width: 2px;
  background: var(--c-primary);
  opacity: .12;
}

.page-about .timeline-item {
  position: relative;
  padding: 0 0 34px 38px;
}

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

.page-about .timeline-dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 3px solid var(--c-primary);
  transition: border-color .3s var(--ease-out), background .3s var(--ease-out);
}

.page-about .timeline-item:hover .timeline-dot {
  background: var(--c-accent);
  border-color: var(--c-secondary);
}

.page-about .timeline-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  text-transform: uppercase;
  margin: 0 0 8px;
}

.page-about .timeline-text {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.75;
  max-width: 62ch;
}

/* ---------- 数据与内容团队 ---------- */
.page-about .team-intro {
  font-size: 1.0625rem;
  line-height: 1.85;
  margin: 0 0 32px;
  max-width: 68ch;
}

.page-about .team-tree-wrap {
  overflow-x: auto;
  border: 1px solid var(--c-line);
  background: var(--c-deep);
  padding: 24px 16px;
  margin-bottom: 36px;
}

.page-about .team-tree {
  width: 100%;
  height: auto;
  min-width: 620px;
  display: block;
}

.page-about .tree-line {
  fill: none;
  stroke: var(--c-primary);
  stroke-width: 1.5;
  opacity: .4;
  stroke-dasharray: 4 3;
}

.page-about .tree-node {
  fill: var(--c-primary);
}

.page-about .tree-node-leaf {
  fill: var(--c-bg);
  stroke: var(--c-primary);
  stroke-width: 1;
}

.page-about .tree-text {
  fill: var(--c-bg);
  font-family: var(--font-body);
  font-size: 11px;
}

.page-about .tree-text-root {
  fill: var(--c-bg);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
}

.page-about .tree-text-title {
  fill: var(--c-bg);
  font-weight: 600;
}

.page-about .tree-text-sub {
  fill: var(--c-light-surface);
  font-family: var(--font-mono);
  font-size: 10px;
}

.page-about .tree-text-leaf {
  fill: var(--c-primary);
  font-size: 11px;
}

.page-about .team-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 40px;
}

.page-about .team-detail-card {
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-top: 4px solid var(--c-secondary);
  padding: 24px;
}

.page-about .team-detail-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .75rem;
  background: var(--c-primary);
  color: var(--c-bg);
  padding: 4px 10px;
  margin-bottom: 14px;
}

.page-about .team-detail-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  text-transform: uppercase;
  margin: 0 0 8px;
}

.page-about .team-detail-card p {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.7;
  font-size: .95rem;
}

/* ---------- 图文媒体 ---------- */
.page-about .story-media {
  margin: 0 0 40px;
  border-left: 4px solid var(--c-secondary);
  padding-left: 16px;
}

.page-about .story-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  display: block;
  background: var(--c-dark-surface);
}

.page-about .story-media figcaption {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--c-muted);
  padding-top: 10px;
}

/* ---------- 行业认可 ---------- */
.page-about .recognition-badges {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 40px;
}

.page-about .badge-item {
  position: relative;
  background: var(--c-dark-surface);
  color: var(--c-bg);
  padding: 24px 24px 24px 68px;
  min-height: 84px;
}

.page-about .badge-index {
  position: absolute;
  left: 20px;
  top: 22px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.8rem;
  color: var(--c-accent);
  line-height: 1;
}

.page-about .badge-item h3 {
  margin: 0 0 6px;
  font-size: 1.1rem;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.page-about .badge-item p {
  margin: 0;
  color: #F4EFE6;
  line-height: 1.6;
  font-size: .92rem;
}

.page-about .recognition-trust {
  margin: 0;
  background: var(--c-light-surface);
  padding: 20px 24px;
  border-left: 4px solid var(--c-primary);
  line-height: 1.8;
}

/* ---------- CTA ---------- */
.page-about .story-cta {
  position: relative;
  margin-top: 64px;
  padding: 64px var(--gutter) 72px;
  background: var(--c-primary);
  color: var(--c-bg);
  -webkit-clip-path: polygon(0 28px, 100% 0, 100% 100%, 0 calc(100% - 20px));
  clip-path: polygon(0 28px, 100% 0, 100% 100%, 0 calc(100% - 20px));
}

.page-about .story-cta-inner {
  max-width: 680px;
}

.page-about .story-cta-index {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin: 0 0 18px;
}

.page-about .story-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-weight: 700;
  text-transform: uppercase;
  margin: 0 0 12px;
}

.page-about .story-cta-inner > p {
  margin: 0 0 28px;
  color: #F4EFE6;
  line-height: 1.75;
}

.page-about .story-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .story-cta .btn-ghost {
  border-color: rgba(244, 239, 230, .6);
  color: var(--c-bg);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 768px) {
  .page-about .story-hero {
    grid-template-columns: 1fr 1fr;
    gap: 44px;
  }

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

  .page-about .team-detail-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .recognition-badges {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 1080px) {
  .page-about .story-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(48px, 6vw, 88px);
    padding: 40px var(--gutter) 88px;
  }

  .page-about .story-hero-copy {
    justify-content: center;
  }

  .page-about .story-about-section,
  .page-about .story-timeline-section,
  .page-about .story-team-section,
  .page-about .story-recognition-section {
    padding: 72px 0 96px;
  }
}