.page-privacy {
  --privacy-gold-line: var(--c-gold, #F4A261);
  --privacy-bg-paper: var(--c-off-white, #F1FAEE);
  --privacy-bg-paper-dark: var(--c-off-white-dark, #E8F0E4);
  --privacy-text: var(--c-charcoal, #333333);
  --privacy-accent: var(--c-primary, #E63946);
  --privacy-index-width: 200px;

  display: block;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: var(--space-lg, 2rem) var(--space-md, 1rem) var(--space-xl, 3rem);
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  color: var(--privacy-text);
  background-color: var(--privacy-bg-paper);
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 24px, rgba(0,0,0,0.015) 24px, rgba(0,0,0,0.015) 25px),
    repeating-linear-gradient(90deg, transparent, transparent 24px, rgba(0,0,0,0.015) 24px, rgba(0,0,0,0.015) 25px);
  background-size: 25px 25px, 25px 25px;
  background-attachment: local;
  box-shadow: inset 0 0 0 1px var(--c-border, #CCCCCC), var(--shadow-panel, 0 4px 20px rgba(0,0,0,0.08));
  position: relative;
  min-height: 60vh;
}

/* —— 面包屑 —— */
.privacy-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm, 0.5rem);
  margin-bottom: var(--space-lg, 2rem);
  padding-bottom: var(--space-sm, 0.5rem);
  border-bottom: 2px solid var(--privacy-gold-line);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  flex-wrap: wrap;
}

.privacy-breadcrumb__link {
  color: var(--c-tech-blue, #1D3557);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.privacy-breadcrumb__link:hover {
  color: var(--c-primary-hover, #C1121F);
}

.privacy-breadcrumb__sep {
  color: var(--privacy-gold-line);
  font-family: var(--font-mono, 'Courier New', monospace);
  font-weight: 700;
  font-size: 0.75rem;
  opacity: 0.7;
}

.privacy-breadcrumb__current {
  color: var(--privacy-text);
  opacity: 0.7;
  font-weight: 400;
}

/* —— 双列布局 —— */
.privacy-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg, 2rem);
}

/* —— 左侧索引 —— */
.privacy-index {
  order: -1;
  background-color: rgba(255,255,255,0.6);
  backdrop-filter: blur(2px);
  border: 1px solid var(--c-border, #CCCCCC);
  border-left: 4px solid var(--c-tech-blue, #1D3557);
  padding: var(--space-md, 1rem);
  box-shadow: var(--shadow-card, 0 2px 12px rgba(0,0,0,0.06));
  position: relative;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.privacy-index__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm, 0.5rem);
  margin-bottom: var(--space-sm, 0.5rem);
  padding-bottom: var(--space-xs, 0.25rem);
  border-bottom: 1px dashed var(--c-border, #CCCCCC);
}

.privacy-index .index-tag {
  font-family: var(--font-mono, 'Courier New', monospace);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--privacy-gold-line);
  background-color: transparent;
  padding: 0;
}

.privacy-index__caption {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--c-tech-blue, #1D3557);
}

.privacy-index__list {
  display: flex;
  gap: var(--space-xs, 0.25rem);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
  min-width: max-content;
}

.privacy-index__item {
  flex-shrink: 0;
}

.privacy-index__link {
  display: flex;
  align-items: center;
  gap: var(--space-xs, 0.25rem);
  padding: var(--space-sm, 0.5rem) var(--space-md, 1rem);
  text-decoration: none;
  color: var(--privacy-text);
  background-color: var(--privacy-bg-paper-dark);
  border: 1px solid transparent;
  border-radius: var(--radius, 4px);
  transition: all 0.2s ease;
  font-size: 0.85rem;
  white-space: nowrap;
}

.privacy-index__link:hover,
.privacy-index__link:focus {
  background-color: var(--privacy-bg-paper);
  border-color: var(--privacy-gold-line);
  color: var(--c-tech-blue, #1D3557);
  outline: none;
}

.privacy-index__num {
  font-family: var(--font-mono, 'Courier New', monospace);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--privacy-gold-line);
  min-width: 1.6em;
  text-align: right;
}

.privacy-index__label {
  font-weight: 500;
}

.privacy-index__rule {
  display: none;
  margin-top: var(--space-md, 1rem);
  height: 1px;
  background: linear-gradient(90deg, var(--privacy-gold-line), transparent);
}

/* —— 内容区 —— */
.privacy-content {
  flex: 1;
  min-width: 0;
}

.privacy-content__title {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-weight: 700;
  font-size: 1.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--c-tech-blue, #1D3557);
  margin: 0 0 var(--space-xs, 0.25rem);
  line-height: 1.2;
  position: relative;
  padding-left: var(--space-lg, 2rem);
}

.privacy-content__title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.25em;
  bottom: 0.25em;
  width: 4px;
  background-color: var(--privacy-accent);
  border-radius: 2px;
}

.privacy-content__subtitle {
  font-size: 0.85rem;
  color: var(--c-border, #CCCCCC);
  margin: 0 0 var(--space-lg, 2rem) var(--space-lg, 2rem);
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--c-border, #CCCCCC);
  padding-bottom: var(--space-md, 1rem);
}

/* —— 章节 —— */
.privacy-section {
  margin-bottom: var(--space-xl, 3rem);
  scroll-margin-top: var(--space-xl, 3rem);
}

.privacy-section__title {
  display: flex;
  align-items: baseline;
  gap: var(--space-md, 1rem);
  margin: 0 0 var(--space-md, 1rem);
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-weight: 700;
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--c-tech-blue, #1D3557);
}

.privacy-section__num {
  font-family: var(--font-mono, 'Courier New', monospace);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--privacy-gold-line);
  line-height: 1;
  flex-shrink: 0;
  min-width: 2.4rem;
  text-align: right;
}

.privacy-section__heading {
  line-height: 1.3;
}

.privacy-section__body {
  padding-left: calc(2.4rem + var(--space-md, 1rem));
}

.privacy-section__text {
  margin: 0 0 var(--space-md, 1rem);
  line-height: 1.7;
  font-size: 0.95rem;
  color: var(--privacy-text);
}

.privacy-section__text:last-child {
  margin-bottom: 0;
}

.privacy-section__link {
  color: var(--c-tech-blue, #1D3557);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--privacy-gold-line);
  font-weight: 600;
  transition: color 0.2s, text-decoration-color 0.2s;
}

.privacy-section__link:hover {
  color: var(--privacy-accent);
  text-decoration-color: var(--privacy-accent);
}

/* —— 分隔线 —— */
.privacy-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--space-lg, 2rem) 0;
  position: relative;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--privacy-gold-line), transparent);
  opacity: 0.5;
}

.privacy-divider__diamond {
  font-size: 0.7rem;
  color: var(--privacy-gold-line);
  background-color: var(--privacy-bg-paper);
  padding: 0 var(--space-md, 1rem);
  position: relative;
  z-index: 1;
  opacity: 0.8;
}

/* —— 底部备注 —— */
.privacy-footer-note {
  margin-top: var(--space-xl, 3rem);
  padding: var(--space-md, 1rem) var(--space-lg, 2rem);
  background-color: var(--c-tech-blue, #1D3557);
  color: var(--privacy-bg-paper);
  border-left: 4px solid var(--privacy-gold-line);
  border-radius: var(--radius, 4px);
}

.privacy-footer-note__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

.privacy-footer-note__email {
  color: var(--privacy-gold-line);
  font-family: var(--font-mono, 'Courier New', monospace);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* —— 底部装饰 —— */
.privacy-decoration {
  margin-top: var(--space-xl, 3rem);
  text-align: center;
  opacity: 0.35;
  pointer-events: none;
}

.privacy-decoration__img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
  filter: grayscale(0.3) contrast(0.8);
  mix-blend-mode: multiply;
}

/* ========================
   桌面端（≥768px）
   ======================== */
@media screen and (min-width: 768px) {
  .page-privacy {
    padding: var(--space-xl, 3rem) var(--space-lg, 2rem) var(--space-2xl, 5rem);
  }

  .privacy-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-xl, 3rem);
  }

  .privacy-index {
    order: 0;
    position: sticky;
    top: calc(var(--header-height, 72px) + var(--space-lg, 2rem));
    width: var(--privacy-index-width);
    flex-shrink: 0;
    align-self: flex-start;
    overflow-x: visible;
    background-color: rgba(255,255,255,0.75);
    padding: var(--space-lg, 2rem) var(--space-md, 1rem);
  }

  .privacy-index__list {
    flex-direction: column;
    gap: var(--space-xs, 0.25rem);
    min-width: 0;
  }

  .privacy-index__item {
    flex-shrink: 1;
  }

  .privacy-index__link {
    white-space: normal;
    padding: var(--space-sm, 0.5rem);
    border-left: 2px solid transparent;
    border-radius: 0;
    background-color: transparent;
  }

  .privacy-index__link:hover,
  .privacy-index__link:focus {
    border-left-color: var(--privacy-gold-line);
    background-color: rgba(244, 162, 97, 0.06);
  }

  .privacy-index__rule {
    display: block;
  }

  .privacy-content__title {
    font-size: 2.25rem;
    padding-left: var(--space-xl, 3rem);
  }

  .privacy-content__title::before {
    top: 0.2em;
    bottom: 0.2em;
    width: 5px;
  }

  .privacy-content__subtitle {
    font-size: 0.9rem;
    margin-left: var(--space-xl, 3rem);
  }

  .privacy-section__title {
    font-size: 1.4rem;
  }

  .privacy-section__num {
    font-size: 1.6rem;
    min-width: 2.8rem;
  }

  .privacy-section__body {
    padding-left: calc(2.8rem + var(--space-md, 1rem));
  }

  .privacy-section__text {
    font-size: 1rem;
  }

  .privacy-decoration__img {
    max-width: 600px;
    margin: 0 auto;
  }
}

/* —— 桌面大屏微调 —— */
@media screen and (min-width: 1024px) {
  .privacy-index {
    width: 220px;
    padding: var(--space-xl, 3rem) var(--space-lg, 2rem);
  }

  .privacy-content__title {
    font-size: 2.5rem;
  }

  .privacy-section__title {
    font-size: 1.5rem;
  }
}