/* ===== 页面专属 CSS：.page-faq ===== */
.page-faq {
  --faq-cat-width: 200px;
  --faq-gap: 32px;
  --faq-radius: var(--radius-md, 14px);
  --faq-border-color: rgba(30, 60, 114, 0.45);
  --faq-answer-bg: #1A2838;
  --faq-answer-border: rgba(255, 111, 0, 0.15);
  --faq-glow: 0 0 18px rgba(255, 111, 0, 0.08);
  color: var(--color-text-body, #E0E6ED);
}

/* 页面标题区 */
.page-faq .page-title {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-heading, #FFFFFF);
  margin: 20px 0 8px;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.page-faq .page-desc {
  font-family: var(--font-body, 'Roboto', sans-serif);
  font-size: 15px;
  color: var(--color-text-muted, #A0AAB8);
  margin: 0 0 32px;
  max-width: 680px;
  line-height: 1.6;
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-family: var(--font-body, 'Roboto', sans-serif);
  color: var(--color-text-muted, #A0AAB8);
  padding: 12px 0 4px;
}

.page-faq .breadcrumb a {
  color: var(--color-link, #FF8C00);
  text-decoration: none;
  transition: color var(--transition-fast, 0.2s ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--color-link-hover, #FFB74D);
  text-decoration: underline;
}

.page-faq .breadcrumb-sep {
  color: var(--color-line, #FF6F00);
  font-weight: 300;
  opacity: 0.7;
}

.page-faq .breadcrumb-current {
  color: var(--color-text-muted, #A0AAB8);
  font-weight: 400;
}

/* 主布局：移动端垂直堆叠，桌面双栏 */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* 左侧分类索引（移动端为顶部横滚列表） */
.page-faq .faq-categories {
  flex-shrink: 0;
  width: 100%;
}

.page-faq .faq-categories-title {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-heading, #FFFFFF);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 12px;
  padding-left: 4px;
  border-left: 3px solid var(--color-line, #FF6F00);
  padding-left: 10px;
}

.page-faq .faq-category-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary, #1E3C72) transparent;
  padding-bottom: 4px;
}

.page-faq .faq-category-list::-webkit-scrollbar {
  height: 4px;
}

.page-faq .faq-category-list::-webkit-scrollbar-thumb {
  background: var(--color-primary, #1E3C72);
  border-radius: 4px;
}

.page-faq .faq-category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body, 'Roboto', sans-serif);
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-body, #E0E6ED);
  background: var(--color-card-bg, #1E2D3D);
  border: 1px solid var(--faq-border-color);
  border-radius: 50px;
  padding: 8px 18px;
  white-space: nowrap;
  text-decoration: none;
  transition: all var(--transition-fast, 0.2s ease);
  cursor: pointer;
}

.page-faq .faq-category-link .faq-cat-indicator {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-line, #FF6F00);
  flex-shrink: 0;
  opacity: 0.5;
  transition: opacity var(--transition-fast, 0.2s ease);
}

.page-faq .faq-category-link:hover,
.page-faq .faq-category-link:focus-visible {
  border-color: var(--color-accent, #FF6F00);
  box-shadow: var(--faq-glow);
  color: var(--color-text-heading, #FFFFFF);
}

.page-faq .faq-category-link:hover .faq-cat-indicator,
.page-faq .faq-category-link:focus-visible .faq-cat-indicator {
  opacity: 1;
}

.page-faq .faq-category-link:focus-visible {
  outline: 2px solid var(--color-accent, #FF6F00);
  outline-offset: 2px;
}

/* 右侧问答区 */
.page-faq .faq-content {
  flex: 1;
  min-width: 0;
}

/* 每个分类区块 */
.page-faq .faq-category-section {
  margin-bottom: 44px;
  scroll-margin-top: calc(var(--header-height, 68px) + 20px);
}

.page-faq .faq-category-section:last-of-type {
  margin-bottom: 36px;
}

.page-faq .faq-category-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-heading, #FFFFFF);
  margin: 0 0 6px;
  line-height: 1.3;
}

.page-faq .faq-category-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm, 8px);
  flex-shrink: 0;
  object-fit: cover;
  background: var(--color-card-bg, #1E2D3D);
  border: 1px solid var(--faq-border-color);
  padding: 4px;
  box-sizing: border-box;
}

.page-faq .faq-section-desc {
  font-family: var(--font-body, 'Roboto', sans-serif);
  font-size: 14px;
  color: var(--color-text-muted, #A0AAB8);
  margin: 0 0 20px 52px;
  line-height: 1.5;
  max-width: 600px;
}

/* 单个问答项 */
.page-faq .faq-item {
  margin-bottom: 10px;
  border-radius: var(--faq-radius);
  background: var(--color-card-bg, #1E2D3D);
  border: 1px solid var(--faq-border-color);
  overflow: hidden;
  transition: border-color var(--transition-base, 0.35s ease), box-shadow var(--transition-base, 0.35s ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(255, 111, 0, 0.3);
  box-shadow: var(--faq-glow);
}

/* 问题（label） */
.page-faq .faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-body, 'Roboto', sans-serif);
  font-size: 15px;
  font-weight: 400;
  color: var(--color-text-body, #E0E6ED);
  line-height: 1.4;
  transition: background var(--transition-fast, 0.2s ease), color var(--transition-fast, 0.2s ease);
  -webkit-tap-highlight-color: transparent;
}

.page-faq .faq-question:hover {
  background: rgba(255, 111, 0, 0.04);
}

.page-faq .faq-question:focus-visible {
  outline: 2px solid var(--color-accent, #FF6F00);
  outline-offset: -2px;
}

.page-faq .faq-question-text {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-arrow {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-accent, #FF6F00);
  border-bottom: 2px solid var(--color-accent, #FF6F00);
  transform: rotate(45deg);
  transition: transform var(--transition-base, 0.35s ease);
  opacity: 0.7;
  margin-top: -4px;
}

/* 答案区（默认收起） */
.page-faq .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow, 0.5s ease), padding var(--transition-base, 0.35s ease);
  background: var(--faq-answer-bg);
  border-top: 1px solid transparent;
}

.page-faq .faq-answer-inner {
  padding: 0 20px;
  font-family: var(--font-body, 'Roboto', sans-serif);
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-body, #E0E6ED);
  opacity: 0;
  transition: opacity var(--transition-base, 0.35s ease) 0.1s;
}

.page-faq .faq-answer-inner p {
  margin: 0 0 12px;
}

.page-faq .faq-answer-inner p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-answer-inner strong {
  color: var(--color-accent-light, #FF8C00);
  font-weight: 500;
}

/* 展开状态 */
.page-faq .faq-checkbox:checked + .faq-question {
  background: rgba(255, 111, 0, 0.06);
  color: var(--color-text-heading, #FFFFFF);
}

.page-faq .faq-checkbox:checked + .faq-question .faq-arrow {
  transform: rotate(-135deg);
  margin-top: 4px;
  opacity: 1;
}

.page-faq .faq-checkbox:checked ~ .faq-answer {
  max-height: 400px;
  padding-top: 4px;
  border-top-color: var(--faq-answer-border);
}

.page-faq .faq-checkbox:checked ~ .faq-answer .faq-answer-inner {
  opacity: 1;
  padding-top: 16px;
  padding-bottom: 20px;
}

/* 步骤配图 */
.page-faq .faq-step-img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm, 8px);
  margin: 12px 0 4px;
  background: var(--color-bg-start, #0D1B2A);
  border: 1px solid rgba(255, 111, 0, 0.12);
}

/* 底部更多帮助 */
.page-faq .faq-more-help {
  margin-top: 28px;
  padding: 20px 24px;
  background: var(--color-card-bg, #1E2D3D);
  border-radius: var(--faq-radius);
  border: 1px solid var(--faq-border-color);
  text-align: center;
}

.page-faq .faq-more-help p {
  margin: 0;
  font-family: var(--font-body, 'Roboto', sans-serif);
  font-size: 15px;
  color: var(--color-text-muted, #A0AAB8);
  line-height: 1.6;
}

.page-faq .faq-more-help a {
  color: var(--color-link, #FF8C00);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast, 0.2s ease), text-decoration var(--transition-fast, 0.2s ease);
}

.page-faq .faq-more-help a:hover,
.page-faq .faq-more-help a:focus-visible {
  color: var(--color-link-hover, #FFB74D);
  text-decoration: underline;
}

/* ===== 桌面端媒体查询 ===== */
@media (min-width: 820px) {
  .page-faq .page-title {
    font-size: 34px;
    margin-top: 28px;
  }

  .page-faq .page-desc {
    font-size: 16px;
    margin-bottom: 40px;
  }

  .page-faq .faq-layout {
    flex-direction: row;
    gap: var(--faq-gap);
    align-items: flex-start;
  }

  .page-faq .faq-categories {
    width: var(--faq-cat-width);
    flex-shrink: 0;
    position: sticky;
    top: calc(var(--header-height, 68px) + 24px);
    z-index: 1;
  }

  .page-faq .faq-categories-title {
    font-size: 13px;
    margin-bottom: 16px;
  }

  .page-faq .faq-category-list {
    flex-direction: column;
    gap: 6px;
    overflow-x: visible;
    scrollbar-width: none;
    padding-bottom: 0;
  }

  .page-faq .faq-category-list::-webkit-scrollbar {
    display: none;
  }

  .page-faq .faq-category-link {
    padding: 10px 16px;
    font-size: 14px;
    border-radius: var(--radius-sm, 8px);
    white-space: normal;
    word-break: break-word;
    background: transparent;
    border: 1px solid transparent;
  }

  .page-faq .faq-category-link:hover,
  .page-faq .faq-category-link:focus-visible {
    background: var(--color-card-bg, #1E2D3D);
    border-color: var(--color-accent, #FF6F00);
  }

  .page-faq .faq-content {
    flex: 1;
    min-width: 0;
  }

  .page-faq .faq-category-heading {
    font-size: 22px;
  }

  .page-faq .faq-section-desc {
    font-size: 15px;
    margin-left: 52px;
  }

  .page-faq .faq-question {
    padding: 18px 24px;
    font-size: 16px;
  }

  .page-faq .faq-answer-inner {
    padding: 0 24px;
    font-size: 15px;
  }

  .page-faq .faq-checkbox:checked ~ .faq-answer .faq-answer-inner {
    padding-top: 18px;
    padding-bottom: 24px;
  }

  .page-faq .faq-step-img {
    max-width: 70%;
  }

  .page-faq .faq-more-help {
    padding: 24px 32px;
  }

  .page-faq .faq-more-help p {
    font-size: 16px;
  }
}

/* ===== 大桌面微调 ===== */
@media (min-width: 1100px) {
  .page-faq .faq-categories {
    width: 220px;
  }

  .page-faq .faq-category-link {
    padding: 12px 18px;
    font-size: 15px;
  }

  .page-faq .faq-question {
    padding: 20px 28px;
  }

  .page-faq .faq-checkbox:checked ~ .faq-answer .faq-answer-inner {
    padding: 20px 28px 26px;
  }
}

/* ===== 窄屏超小间距保护 ===== */
@media (max-width: 380px) {
  .page-faq .page-title {
    font-size: 22px;
  }

  .page-faq .faq-question {
    padding: 14px 14px;
    font-size: 14px;
  }

  .page-faq .faq-answer-inner {
    padding: 0 14px;
    font-size: 13px;
  }

  .page-faq .faq-checkbox:checked ~ .faq-answer .faq-answer-inner {
    padding-top: 12px;
    padding-bottom: 16px;
  }

  .page-faq .faq-category-link {
    padding: 6px 14px;
    font-size: 13px;
  }

  .page-faq .faq-category-heading {
    font-size: 17px;
    gap: 8px;
  }

  .page-faq .faq-category-icon {
    width: 32px;
    height: 32px;
  }

  .page-faq .faq-section-desc {
    margin-left: 40px;
    font-size: 13px;
  }

  .page-faq .faq-more-help {
    padding: 16px 16px;
  }

  .page-faq .faq-more-help p {
    font-size: 14px;
  }
}