/* ===== 页面专属 CSS：.page-about 品牌档案 ===== */
.page-about {
  --about-hero-min-h: 420px;
  --about-chapter-gap: 48px;
  --about-marker-w: 80px;
  --about-content-max-w: 820px;
  --about-font-size-number: 4.5rem;
  --about-transition: 280ms ease;
  --about-quote-bg: rgba(215, 175, 55, 0.06);
  --about-clock-bg: rgba(200, 16, 46, 0.04);
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  background-color: var(--color-white, #FFFFFF);
  color: var(--color-black, #1A1A1A);
  font-family: var(--font-primary, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif);
  line-height: 1.5;
}

/* ---------- 首屏 ---------- */
.about-hero {
  position: relative;
  min-height: var(--about-hero-min-h);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color-black, #1A1A1A);
}

.about-hero-image-wrap {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.about-hero-bg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.55;
}

.about-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(135deg, rgba(26,26,26,0.82) 0%, rgba(26,26,26,0.40) 70%, rgba(200,16,46,0.18) 100%);
  pointer-events: none;
}

.about-hero-content {
  position: relative;
  z-index: 3;
  max-width: var(--about-content-max-w, 820px);
  width: 100%;
  padding: 40px 24px 48px;
  text-align: center;
  color: var(--color-white, #FFFFFF);
}

.about-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 24px;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.65);
}

.about-breadcrumb a {
  color: var(--color-gold, #D4AF37);
  text-decoration: none;
  transition: color var(--about-transition);
}

.about-breadcrumb a:hover,
.about-breadcrumb a:focus-visible {
  color: var(--color-brightred, #E63946);
  text-decoration: underline;
}

.about-breadcrumb-sep {
  margin: 0 2px;
  color: rgba(255,255,255,0.35);
}

.about-hero-title {
  margin: 0 0 8px;
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  font-weight: 800;
  font-style: italic;
  line-height: 1.08;
  color: var(--color-white, #FFFFFF);
  text-shadow: 0 2px 16px rgba(0,0,0,0.35);
  letter-spacing: 0.02em;
}

.about-hero-subtitle {
  margin: 0 0 10px;
  font-size: clamp(1rem, 2.8vw, 1.5rem);
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-gold, #D4AF37);
  text-transform: uppercase;
}

.about-hero-desc {
  margin: 0 auto;
  max-width: 580px;
  font-size: clamp(0.95rem, 1.8vw, 1.15rem);
  line-height: 1.6;
  color: rgba(255,255,255,0.80);
}

/* ---------- 章节容器 ---------- */
.about-chapters-wrapper {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px 16px;
}

/* ---------- 单个章节 ---------- */
.about-chapter {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(26,26,26,0.06);
}

.about-chapter:last-of-type {
  border-bottom: none;
  margin-bottom: 8px;
}

/* 编号标记区 */
.about-chapter-marker {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.about-chapter-number {
  font-family: var(--font-mono, 'SF Mono', 'Courier New', Consolas, monospace);
  font-size: var(--about-font-size-number, 4.5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--color-gold, #D4AF37);
  letter-spacing: -0.04em;
}

.about-chapter-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-darkgray, #2E2E2E);
  opacity: 0.6;
}

/* 内容体 */
.about-chapter-body {
  flex: 1;
  min-width: 0;
}

.about-chapter-title {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3.2vw, 2.0rem);
  font-weight: 700;
  font-style: italic;
  line-height: 1.2;
  color: var(--color-black, #1A1A1A);
  display: inline-block;
  position: relative;
  transition: color var(--about-transition);
  cursor: default;
}

.about-chapter-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 3px;
  background-color: var(--color-red, #C8102E);
  transition: width var(--about-transition);
}

.about-chapter-title:hover::after,
.about-chapter-title:focus-visible::after {
  width: 100%;
}

.about-chapter-title:hover {
  color: var(--color-red, #C8102E);
}

/* 金色分割线 */
.about-chapter-line.gold-line {
  width: 60px;
  height: 2px;
  background-color: var(--color-gold, #D4AF37);
  margin: 0 0 20px;
  border: none;
}

/* 正文 */
.about-chapter-text {
  margin: 0 0 18px;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-darkgray, #2E2E2E);
  max-width: 680px;
}

.about-chapter-text strong {
  font-weight: 600;
  color: var(--color-black, #1A1A1A);
}

.about-link {
  color: var(--color-red, #C8102E);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid transparent;
  transition: border-color var(--about-transition), color var(--about-transition);
}

.about-link:hover,
.about-link:focus-visible {
  color: var(--color-brightred, #E63946);
  border-bottom-color: currentColor;
}

/* 引用框（纸张叠层） */
.about-chapter-quote {
  position: relative;
  margin: 24px 0 22px;
  padding: 20px 24px 16px 28px;
  background-color: var(--about-quote-bg);
  border-left: 4px solid var(--color-gold, #D4AF37);
  border-radius: 2px;
  box-shadow:
    0 1px 2px rgba(0,0,0,0.04),
    0 2px 6px rgba(0,0,0,0.03),
    0 4px 12px rgba(0,0,0,0.02);
  max-width: 580px;
}

.about-chapter-quote-icon {
  position: absolute;
  top: -6px;
  left: 10px;
  font-size: 3.2rem;
  line-height: 1;
  color: var(--color-gold, #D4AF37);
  opacity: 0.30;
  font-family: Georgia, 'Times New Roman', serif;
  user-select: none;
  pointer-events: none;
}

.about-chapter-quote-text {
  margin: 0;
  font-size: 1.05rem;
  font-style: italic;
  line-height: 1.6;
  color: var(--color-black, #1A1A1A);
  font-weight: 450;
}

/* 图片块 */
.about-chapter-image-block {
  margin: 22px 0 24px;
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  max-width: 600px;
}

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

/* 时钟卡片（纸张叠层） */
.about-chapter-clock {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 14px 24px 14px 18px;
  margin: 18px 0 20px;
  background-color: var(--about-clock-bg);
  border: 1px solid rgba(200,16,46,0.12);
  border-radius: 2px;
  box-shadow:
    0 1px 2px rgba(0,0,0,0.03),
    0 2px 6px rgba(0,0,0,0.02);
  flex-wrap: wrap;
}

.about-chapter-clock-img {
  display: block;
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex-shrink: 0;
}

.about-chapter-clock-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-darkgray, #2E2E2E);
  opacity: 0.7;
}

.about-chapter-clock-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-red, #C8102E);
  font-family: var(--font-mono, 'SF Mono', 'Courier New', Consolas, monospace);
}

/* ---------- 联系方式区块 ---------- */
.about-contact {
  background-color: var(--color-lightgray, #F5F5F5);
  transition: background-color var(--about-transition);
  padding: 40px 24px 48px;
  margin-top: 8px;
}

.about-contact:hover,
.about-contact:focus-within {
  background-color: var(--color-white, #FFFFFF);
}

.about-contact-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.about-contact-heading {
  margin: 0 0 10px;
  font-size: clamp(1.3rem, 2.6vw, 1.8rem);
  font-weight: 700;
  font-style: italic;
  color: var(--color-black, #1A1A1A);
}

.about-contact-line.gold-line {
  width: 60px;
  height: 2px;
  background-color: var(--color-gold, #D4AF37);
  margin: 0 0 28px;
  border: none;
}

.about-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  max-width: 680px;
}

.about-contact-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(26,26,26,0.06);
}

.about-contact-item:last-child {
  border-bottom: none;
}

.about-contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-darkgray, #2E2E2E);
  opacity: 0.65;
}

.about-contact-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-black, #1A1A1A);
  word-break: break-all;
}

.about-contact-note {
  margin: 24px 0 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-darkgray, #2E2E2E);
  opacity: 0.7;
  max-width: 520px;
}

/* ---------- 桌面端媒体查询 ---------- */
@media (min-width: 720px) {
  .about-hero {
    min-height: 400px;
  }

  .about-hero-content {
    padding: 48px 40px 60px;
  }

  .about-hero-title {
    font-size: clamp(3rem, 5.5vw, 4.8rem);
  }

  .about-chapters-wrapper {
    padding: 48px 40px 24px;
  }

  .about-chapter {
    flex-direction: row;
    gap: 36px;
    margin-bottom: 56px;
    padding-bottom: 48px;
  }

  .about-chapter-marker {
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
    min-width: var(--about-marker-w);
    padding-top: 6px;
  }

  .about-chapter-number {
    font-size: 5.2rem;
  }

  .about-chapter-label {
    font-size: 0.75rem;
  }

  .about-chapter-body {
    padding-top: 4px;
  }

  .about-chapter-title {
    margin-bottom: 14px;
  }

  .about-chapter-line.gold-line {
    margin-bottom: 24px;
  }

  .about-chapter-text {
    font-size: 1.05rem;
  }

  .about-chapter-quote {
    padding: 24px 28px 20px 34px;
  }

  .about-chapter-quote-icon {
    font-size: 4rem;
    top: -8px;
    left: 12px;
  }

  .about-chapter-clock {
    padding: 16px 28px 16px 22px;
    gap: 18px;
  }

  .about-chapter-clock-img {
    width: 48px;
    height: 48px;
  }

  .about-contact {
    padding: 52px 40px 56px;
  }

  .about-contact-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px 32px;
  }

  .about-contact-item {
    padding: 12px 0;
  }

  .about-contact-note {
    margin-top: 28px;
  }
}

@media (min-width: 1024px) {
  .about-hero {
    min-height: 440px;
  }

  .about-hero-content {
    padding: 56px 48px 72px;
  }

  .about-chapters-wrapper {
    padding: 56px 48px 32px;
  }

  .about-chapter {
    gap: 52px;
    margin-bottom: 64px;
    padding-bottom: 56px;
  }

  .about-chapter-marker {
    min-width: 100px;
  }

  .about-chapter-number {
    font-size: 6rem;
  }

  .about-contact {
    padding: 60px 48px 64px;
  }

  .about-contact-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px 40px;
  }
}

/* ---------- 辅助：高亮数字等宽 ---------- */
.page-about .data-highlight {
  font-family: var(--font-mono, 'SF Mono', 'Courier New', Consolas, monospace);
  color: var(--color-gold, #D4AF37);
  font-weight: 700;
}