/* ===== 帮助中心页面专属样式 ===== */
.page-faq {
  --faq-bg-card: #FFFFFF;
  --faq-bg-answer: #F9F8F4;
  --faq-border-radius: 12px;
  --faq-gap: 2rem;
  --faq-item-radius: 8px;
  --faq-icon-color: var(--color-primary, #0066CC);
  --faq-accent: var(--color-secondary, #FF6600);

  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: calc(var(--header-height, 64px) + 2rem) 1.5rem 3rem;
  background: var(--color-bg, #F5F0E8);
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  color: var(--color-text, #1A1A1A);
  line-height: var(--line-height-body, 1.6);
}

/* 面包屑 */
.page-faq .faq-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--size-small, 0.875rem);
  color: var(--color-text-secondary, #666666);
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border, #E6E0D6);
}
.page-faq .faq-breadcrumb a {
  color: var(--color-primary, #0066CC);
  text-decoration: none;
  transition: color var(--transition, 0.25s ease);
}
.page-faq .faq-breadcrumb a:hover,
.page-faq .faq-breadcrumb a:focus-visible {
  color: var(--color-primary-hover, #0052A3);
  outline: var(--focus-outline, 3px solid #FF6600);
  outline-offset: var(--focus-offset, 4px);
}
.page-faq .faq-breadcrumb-sep {
  color: var(--color-border-strong, #CCC6BA);
  user-select: none;
}
.page-faq .faq-breadcrumb [aria-current="page"] {
  font-weight: 500;
  color: var(--color-text, #1A1A1A);
}

/* Hero 区域 */
.page-faq .faq-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding: 2rem 0 1rem;
}
.page-faq .faq-hero-text {
  flex: 1;
}
.page-faq .faq-hero-title {
  font-family: var(--font-heading, 'Inter Bold', sans-serif);
  font-size: var(--size-h1, 3rem);
  line-height: var(--line-height-heading, 1.2);
  letter-spacing: var(--letter-spacing, 0.02em);
  color: var(--color-text, #1A1A1A);
  margin: 0 0 0.5rem;
}
.page-faq .faq-hero-subtitle {
  font-size: var(--size-body, 1rem);
  color: var(--color-text-secondary, #666666);
  max-width: 36em;
  margin: 0;
}
.page-faq .faq-hero-icon {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 0 0 3px var(--color-primary-light, #E8F0FE);
}

/* 搜索框 */
.page-faq .faq-search {
  position: relative;
  margin-bottom: 2.5rem;
  max-width: 32rem;
}
.page-faq .faq-search-label.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.page-faq .faq-search-input {
  display: block;
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.75rem;
  font-size: var(--size-body, 1rem);
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  background: var(--color-card, #FFFFFF);
  border: 2px solid var(--color-border, #E6E0D6);
  border-radius: 50px;
  color: var(--color-text, #1A1A1A);
  transition: border-color var(--transition, 0.25s ease), box-shadow var(--transition, 0.25s ease);
  appearance: none;
}
.page-faq .faq-search-input::placeholder {
  color: var(--color-text-secondary, #666666);
  opacity: 0.7;
}
.page-faq .faq-search-input:focus {
  outline: none;
  border-color: var(--color-primary, #0066CC);
  box-shadow: 0 0 0 4px var(--color-primary-light, #E8F0FE);
}
.page-faq .faq-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary, #666666);
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
}

/* 分类卡片容器 */
.page-faq .faq-categories {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
}

/* 单个分类卡片 */
.page-faq .faq-category {
  background: var(--faq-bg-card);
  border-radius: var(--faq-border-radius);
  box-shadow: var(--shadow-card, 0 4px 20px rgba(0,0,0,0.08));
  border: 1px solid var(--color-border, #E6E0D6);
  overflow: hidden;
  transition: box-shadow var(--transition, 0.25s ease);
}
.page-faq .faq-category:hover {
  box-shadow: var(--shadow-hover, 0 8px 32px rgba(0,0,0,0.12));
}

/* 分类卡片头部（标题+图片） */
.page-faq .faq-category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--gradient-primary, linear-gradient(135deg, #0066CC 0%, #004499 100%));
  color: #FFFFFF;
}
.page-faq .faq-category-title {
  font-family: var(--font-heading, 'Inter Bold', sans-serif);
  font-size: var(--size-h3, 1.5rem);
  line-height: var(--line-height-heading, 1.2);
  margin: 0;
  letter-spacing: var(--letter-spacing, 0.02em);
}
.page-faq .faq-category-img {
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid rgba(255,255,255,0.2);
  max-width: 120px;
  height: auto;
}

/* 分类卡片内容区 */
.page-faq .faq-category-body {
  padding: 0.5rem 0;
}

/* 手风琴项 - details/summary */
.page-faq .faq-item {
  border-bottom: 1px solid var(--color-border, #E6E0D6);
  transition: background var(--transition, 0.25s ease);
}
.page-faq .faq-item:last-of-type {
  border-bottom: none;
}
.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  cursor: pointer;
  font-size: var(--size-body, 1rem);
  font-weight: 500;
  color: var(--color-text, #1A1A1A);
  list-style: none;
  transition: color var(--transition, 0.25s ease), background var(--transition, 0.25s ease);
  user-select: none;
  position: relative;
}
/* 移除默认三角 */
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::marker {
  display: none;
  content: '';
}
/* + / - 图标 */
.page-faq .faq-item summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  line-height: 1;
  color: var(--faq-icon-color);
  flex-shrink: 0;
  transition: transform var(--transition, 0.25s ease);
}
.page-faq .faq-item[open] summary::after {
  content: '−';
  transform: rotate(0deg);
}
.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  background: var(--color-primary-light, #E8F0FE);
  color: var(--color-primary, #0066CC);
}
.page-faq .faq-item summary:focus-visible {
  outline: var(--focus-outline, 3px solid #FF6600);
  outline-offset: var(--focus-offset, 4px);
  border-radius: 4px;
}
/* 答案内容 */
.page-faq .faq-item .faq-answer {
  padding: 0 1.5rem 1.25rem;
  background: var(--faq-bg-answer);
  color: var(--color-text-secondary, #666666);
  font-size: var(--size-body, 1rem);
  line-height: var(--line-height-body, 1.6);
  border-top: 1px solid var(--color-border, #E6E0D6);
  margin-top: 0;
}
.page-faq .faq-item .faq-answer p {
  margin: 0.75rem 0;
}
.page-faq .faq-item .faq-answer a {
  color: var(--color-primary, #0066CC);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition, 0.25s ease);
}
.page-faq .faq-item .faq-answer a:hover,
.page-faq .faq-item .faq-answer a:focus-visible {
  color: var(--color-primary-hover, #0052A3);
  outline: var(--focus-outline, 3px solid #FF6600);
  outline-offset: var(--focus-offset, 4px);
}

/* 底部引导 */
.page-faq .faq-bottom-cta {
  margin-top: 3rem;
  padding: 1.5rem 2rem;
  background: var(--color-card, #FFFFFF);
  border-radius: var(--faq-border-radius);
  border: 1px solid var(--color-border, #E6E0D6);
  text-align: center;
  font-size: var(--size-body, 1rem);
  color: var(--color-text-secondary, #666666);
  box-shadow: var(--shadow-card, 0 4px 20px rgba(0,0,0,0.08));
}
.page-faq .faq-bottom-cta a {
  color: var(--color-primary, #0066CC);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition, 0.25s ease);
}
.page-faq .faq-bottom-cta a:hover,
.page-faq .faq-bottom-cta a:focus-visible {
  color: var(--color-primary-hover, #0052A3);
  outline: var(--focus-outline, 3px solid #FF6600);
  outline-offset: var(--focus-offset, 4px);
  text-decoration: underline;
}

/* ===== 响应式 ===== */

/* 移动端优先 — 窄屏调整 */
@media (max-width: 767px) {
  .page-faq {
    padding: calc(var(--header-height, 64px) + 1rem) 1rem 2rem;
  }
  .page-faq .faq-hero {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding-top: 1rem;
  }
  .page-faq .faq-hero-title {
    font-size: 2rem;
  }
  .page-faq .faq-hero-icon {
    width: 72px;
    height: 72px;
  }
  .page-faq .faq-search {
    max-width: 100%;
  }
  .page-faq .faq-category-header {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 1rem 1.25rem;
  }
  .page-faq .faq-category-title {
    font-size: 1.25rem;
  }
  .page-faq .faq-category-img {
    max-width: 80px;
  }
  .page-faq .faq-item summary {
    padding: 0.85rem 1.25rem;
    font-size: 0.95rem;
  }
  .page-faq .faq-item .faq-answer {
    padding: 0 1.25rem 1rem;
    font-size: 0.95rem;
  }
  .page-faq .faq-bottom-cta {
    padding: 1.25rem 1rem;
  }
}

/* 平板及以上 */
@media (min-width: 768px) {
  .page-faq {
    padding: calc(var(--header-height, 64px) + 2.5rem) 2rem 4rem;
  }
  .page-faq .faq-hero-title {
    font-size: var(--size-h1, 3rem);
  }
  .page-faq .faq-categories {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--faq-gap);
  }
  .page-faq .faq-category:first-child {
    grid-column: 1 / -1;
  }
  .page-faq .faq-category:last-child {
    grid-column: 1 / -1;
  }
  .page-faq .faq-category-img {
    max-width: 160px;
  }
}

/* 大桌面 */
@media (min-width: 1200px) {
  .page-faq .faq-categories {
    grid-template-columns: 1fr 1fr;
  }
  .page-faq .faq-category:first-child {
    grid-column: 1 / -1;
  }
  .page-faq .faq-category:last-child {
    grid-column: 1 / -1;
  }
  .page-faq .faq-category-img {
    max-width: 180px;
  }
}