/* ===== 品牌概况页专属样式 .page-about ===== */
.page-about {
  --about-spread-gap: 48px;
  --about-timeline-line: 3px;
  --about-badge-size: 52px;
  --about-number-size: clamp(4rem, 12vw, 8rem);
  position: relative;
  background-color: var(--primary, #0B1D3A);
  color: var(--neutral-light, #E0E6ED);
  padding: 0 var(--spacing-unit, 16px) var(--section-gap, 48px);
  max-width: var(--content-max, 1200px);
  margin: 0 auto;
  /* 噪点纹理叠加 */
  background-image: repeating-radial-gradient(circle at 20% 30%, rgba(255,107,53,0.015) 0, rgba(255,107,53,0.015) 2px, transparent 2px, transparent 6px);
}

/* 面包屑 */
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 12px;
  font-family: var(--body-font, Georgia, serif);
  font-size: 0.875rem;
  color: var(--meta-color, #8899AA);
  border-bottom: var(--border-thick, 4px solid #2A3F66);
  margin-bottom: 24px;
}

.page-about .breadcrumb a {
  color: var(--accent2, #00C896);
  text-decoration: none;
  transition: color var(--transition, cubic-bezier(0.25,0.46,0.45,0.94) 300ms);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--accent1, #FF6B35);
  outline: 2px solid var(--accent1, #FF6B35);
  outline-offset: 2px;
}

.page-about .breadcrumb .sep {
  color: var(--line-divider, #2A3F66);
  font-weight: 700;
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--neutral-light, #E0E6ED);
  font-weight: 400;
}

/* 页面标题 */
.page-about .page-title {
  font-family: var(--heading-font, Anton, sans-serif);
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent1, #FF6B35);
  margin: 0 0 32px;
  line-height: 1.1;
  position: relative;
  display: inline-block;
}

.page-about .page-title::after {
  content: '';
  position: absolute;
  right: -24px;
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 4px;
  background: var(--accent2, #00C896);
  clip-path: polygon(0 0, 100% 0, 85% 100%, 0 100%);
}

/* 对页布局 */
.page-about .magazine-spread {
  display: flex;
  flex-direction: column;
  gap: var(--about-spread-gap, 48px);
  margin-bottom: var(--section-gap, 48px);
}

/* 通用 section-label */
.page-about .section-label {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--heading-font, Anton, sans-serif);
  font-size: 1.6rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--neutral-light, #E0E6ED);
  margin: 0 0 20px;
  padding-bottom: 8px;
  border-bottom: 4px solid var(--line-divider, #2A3F66);
}

.page-about .label-rotate {
  font-family: var(--body-font, Georgia, serif);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--meta-color, #8899AA);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  opacity: 0.6;
  align-self: flex-end;
  line-height: 1;
  white-space: nowrap;
}

/* ---- 左页：时间轴 ---- */
.page-about .spread-left {
  flex: 1 1 100%;
}

.page-about .timeline {
  position: relative;
  padding-left: calc(var(--about-badge-size, 52px) + 20px);
}

/* 时间轴垂直线 */
.page-about .timeline::before {
  content: '';
  position: absolute;
  left: calc(var(--about-badge-size, 52px) / 2);
  top: 12px;
  bottom: 12px;
  width: var(--about-timeline-line, 3px);
  background: var(--line-divider, #2A3F66);
  border-radius: 2px;
}

.page-about .timeline-node {
  position: relative;
  margin-bottom: 24px;
  list-style: none;
  border: none;
  background: transparent;
}

.page-about .timeline-node[open] {
  margin-bottom: 28px;
}

.page-about .timeline-node::-webkit-details-marker {
  display: none;
}

.page-about .timeline-node::marker {
  display: none;
  content: '';
}

/* 时间轴标记行 */
.page-about .timeline-marker {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  list-style: none;
  padding: 8px 0;
  transition: gap var(--transition, cubic-bezier(0.25,0.46,0.45,0.94) 300ms);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.page-about .timeline-marker::-webkit-details-marker {
  display: none;
}

.page-about .timeline-marker:focus-visible {
  outline: 2px solid var(--accent1, #FF6B35);
  outline-offset: 4px;
  border-radius: 4px;
}

.page-about .marker-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--about-badge-size, 52px);
  height: var(--about-badge-size, 52px);
  font-family: var(--heading-font, Anton, sans-serif);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--primary, #0B1D3A);
  background: var(--accent1, #FF6B35);
  clip-path: polygon(0 0, 100% 0, 85% 100%, 0 100%);
  flex-shrink: 0;
  position: relative;
  z-index: 2;
  transition: transform var(--transition, cubic-bezier(0.25,0.46,0.45,0.94) 300ms);
}

.page-about .timeline-node[open] .marker-badge {
  transform: scale(1.05);
  background: var(--accent2, #00C896);
}

.page-about .marker-title {
  font-family: var(--heading-font, Anton, sans-serif);
  font-size: 1.15rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--neutral-light, #E0E6ED);
  flex: 1;
  transition: color var(--transition, cubic-bezier(0.25,0.46,0.45,0.94) 300ms);
}

.page-about .timeline-node[open] .marker-title {
  color: var(--accent2, #00C896);
}

.page-about .marker-icon {
  font-family: var(--body-font, Georgia, serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--meta-color, #8899AA);
  transition: transform var(--transition, cubic-bezier(0.25,0.46,0.45,0.94) 300ms);
  line-height: 1;
}

.page-about .timeline-node[open] .marker-icon {
  transform: rotate(45deg);
  color: var(--accent2, #00C896);
}

/* 详情内容 */
.page-about .marker-detail {
  padding: 8px 0 8px calc(var(--about-badge-size, 52px) + 14px);
  font-family: var(--body-font, Georgia, serif);
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--meta-color, #8899AA);
  border-left: 2px solid var(--accent2, #00C896);
  margin-left: calc(var(--about-badge-size, 52px) / 2 - 1px);
  padding-left: 20px;
  animation: aboutFadeIn 0.3s ease;
}

@keyframes aboutFadeIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-about .marker-detail p {
  margin: 0;
}

/* ---- 右页：品牌故事 ---- */
.page-about .spread-right {
  flex: 1 1 100%;
}

.page-about .story-content {
  position: relative;
}

.page-about .big-number {
  font-family: var(--heading-font, Anton, sans-serif);
  font-size: var(--about-number-size, 8rem);
  font-weight: 400;
  line-height: 0.85;
  color: var(--accent1, #FF6B35);
  margin: 0 0 8px;
  opacity: 0.9;
  text-shadow: 6px 6px 0 rgba(0,0,0,0.35);
  letter-spacing: -0.03em;
}

.page-about .story-text {
  font-family: var(--body-font, Georgia, serif);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--neutral-light, #E0E6ED);
  margin: 0 0 24px;
  max-width: 680px;
}

.page-about .story-chart {
  margin-bottom: 24px;
  max-width: 360px;
  background: var(--surface-elevated, #122645);
  padding: 16px 16px 8px;
  border: var(--border-thick, 4px solid #2A3F66);
  box-shadow: var(--shadow-heavy, 8px 8px 0 rgba(0,0,0,0.4));
}

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

.page-about .story-image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-top: 16px;
  border: var(--border-thick, 4px solid #2A3F66);
  box-shadow: var(--shadow-heavy, 8px 8px 0 rgba(0,0,0,0.4));
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

/* ---- 品牌亮点 ---- */
.page-about .highlights {
  margin-bottom: var(--section-gap, 48px);
}

.page-about .section-title {
  font-family: var(--heading-font, Anton, sans-serif);
  font-size: 1.8rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--neutral-light, #E0E6ED);
  margin: 0 0 28px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .title-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--accent1, #FF6B35);
  color: var(--primary, #0B1D3A);
  clip-path: polygon(0 0, 100% 0, 85% 100%, 0 100%);
  font-size: 1.6rem;
  flex-shrink: 0;
}

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

.page-about .highlight-card {
  background: var(--surface-elevated, #122645);
  border: var(--border-thick, 4px solid #2A3F66);
  box-shadow: var(--shadow-heavy, 8px 8px 0 rgba(0,0,0,0.4));
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform var(--transition, cubic-bezier(0.25,0.46,0.45,0.94) 300ms),
              box-shadow var(--transition, cubic-bezier(0.25,0.46,0.45,0.94) 300ms);
}

.page-about .highlight-card:hover,
.page-about .highlight-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 12px 12px 0 rgba(0,0,0,0.45);
}

.page-about .card-icon-wrap {
  position: relative;
  display: inline-flex;
  align-self: flex-start;
}

.page-about .card-icon {
  display: block;
  width: 64px;
  height: 64px;
  object-fit: contain;
  border: 2px solid var(--line-divider, #2A3F66);
  background: var(--primary, #0B1D3A);
  padding: 4px;
  transition: transform var(--transition, cubic-bezier(0.25,0.46,0.45,0.94) 300ms);
}

.page-about .highlight-card:hover .card-icon,
.page-about .highlight-card:focus-within .card-icon {
  transform: scale(1.12);
}

.page-about .hover-tip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.95);
  background: var(--accent2, #00C896);
  color: var(--primary, #0B1D3A);
  font-family: var(--body-font, Georgia, serif);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 14px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition, cubic-bezier(0.25,0.46,0.45,0.94) 300ms),
              transform var(--transition, cubic-bezier(0.25,0.46,0.45,0.94) 300ms);
  clip-path: polygon(0 0, 100% 0, 92% 100%, 0 100%);
  box-shadow: var(--shadow-light, 4px 4px 0 rgba(0,0,0,0.25));
}

.page-about .highlight-card:hover .hover-tip,
.page-about .highlight-card:focus-within .hover-tip {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

.page-about .card-title {
  font-family: var(--heading-font, Anton, sans-serif);
  font-size: 1.2rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent1, #FF6B35);
  margin: 0;
}

.page-about .card-body {
  font-family: var(--body-font, Georgia, serif);
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--neutral-light, #E0E6ED);
  margin: 0;
  flex: 1;
}

/* ---- 联系方式提示 ---- */
.page-about .contact-prompt {
  position: relative;
  background: var(--surface-elevated, #122645);
  border: var(--border-thick, 4px solid #2A3F66);
  box-shadow: var(--shadow-heavy, 8px 8px 0 rgba(0,0,0,0.4));
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .contact-label {
  margin-bottom: 8px;
  border-bottom-color: var(--accent1, #FF6B35);
}

.page-about .contact-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
}

.page-about .contact-text {
  font-family: var(--body-font, Georgia, serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--neutral-light, #E0E6ED);
  margin: 0;
  max-width: 560px;
}

.page-about .contact-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
}

.page-about .contact-email {
  font-family: var(--body-font, Georgia, serif);
  font-size: 0.92rem;
  color: var(--meta-color, #8899AA);
  letter-spacing: 0.02em;
}

.page-about .contact-icon {
  display: block;
  width: 56px;
  height: 56px;
  object-fit: contain;
  border: 2px solid var(--line-divider, #2A3F66);
  background: var(--primary, #0B1D3A);
  padding: 6px;
  margin-top: 8px;
}

/* ===== 响应式：平板及以上 ===== */
@media (min-width: 768px) {
  .page-about {
    padding: 0 calc(var(--spacing-unit, 16px) * 2) var(--section-gap, 48px);
  }

  .page-about .page-title::after {
    width: 100px;
  }

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

  .page-about .highlight-card {
    padding: 28px;
  }

  .page-about .card-icon {
    width: 72px;
    height: 72px;
  }

  .page-about .contact-prompt {
    padding: 40px 32px;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-about .contact-body {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    flex: 1;
  }

  .page-about .contact-icon {
    margin-top: 0;
    margin-left: auto;
  }
}

/* ===== 响应式：桌面端对页 ===== */
@media (min-width: 1024px) {
  .page-about .magazine-spread {
    flex-direction: row;
    gap: 56px;
  }

  .page-about .spread-left {
    flex: 1 1 45%;
    max-width: 45%;
  }

  .page-about .spread-right {
    flex: 1 1 55%;
    max-width: 55%;
    position: relative;
  }

  .page-about .spread-right::before {
    content: '';
    position: absolute;
    left: -28px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--accent1, #FF6B35);
    clip-path: polygon(0 0, 100% 0, 80% 100%, 0 100%);
    opacity: 0.5;
  }

  .page-about .story-image {
    max-width: 90%;
  }

  .page-about .highlight-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .page-about .highlight-card {
    padding: 32px;
  }

  .page-about .contact-prompt {
    padding: 48px 40px;
  }

  .page-about .contact-email {
    font-size: 1rem;
  }
}

/* ===== 响应式：大桌面端 ===== */
@media (min-width: 1280px) {
  .page-about .magazine-spread {
    gap: 72px;
  }

  .page-about .spread-left {
    flex: 1 1 42%;
    max-width: 42%;
  }

  .page-about .spread-right {
    flex: 1 1 58%;
    max-width: 58%;
  }

  .page-about .story-text {
    font-size: 1.08rem;
  }

  .page-about .highlight-grid {
    gap: 32px;
  }
}

/* ===== 可访问性 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

.page-about :focus-visible {
  outline: 2px solid var(--accent1, #FF6B35);
  outline-offset: 3px;
}

/* 确保窄屏不溢出 */
@media (max-width: 400px) {
  .page-about {
    padding-left: 12px;
    padding-right: 12px;
  }

  .page-about .marker-badge {
    width: 42px;
    height: 42px;
    font-size: 1.1rem;
  }

  .page-about .timeline {
    padding-left: calc(42px + 14px);
  }

  .page-about .timeline::before {
    left: 21px;
  }

  .page-about .marker-detail {
    padding-left: 14px;
    margin-left: 20px;
  }

  .page-about .card-icon {
    width: 56px;
    height: 56px;
  }

  .page-about .contact-icon {
    width: 48px;
    height: 48px;
  }
}