/* ===== 支持中心 (page-faq) 专属样式 ===== */
.page-faq {
  --faq-sidebar-w: 280px;
  --faq-gap: 2rem;
  --faq-radius: 12px;
  --cat-size: 14px;
  --indicator-size: 14px;
  display: block;
  padding: var(--space-xl) 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
  font-size: 0.85rem;
  color: var(--c-text-muted);
  margin-bottom: var(--space-lg);
}
.page-faq .breadcrumb a {
  color: var(--c-text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--c-secondary);
}
.page-faq .breadcrumb .separator {
  opacity: 0.5;
}

/* 页面标题 */
.page-faq .faq-heading {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: var(--space-xl);
  line-height: 1.2;
}

/* 布局容器：移动端堆叠，桌面侧栏+内容 */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
}

/* ===== 左侧栏 ===== */
.page-faq .faq-sidebar {
  width: 100%;
  flex-shrink: 0;
}

/* 搜索框 */
.page-faq .faq-search-wrap {
  position: relative;
  margin-bottom: 1.25rem;
}
.page-faq .faq-search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.6rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.25s, box-shadow 0.25s;
  box-sizing: border-box;
}
.page-faq .faq-search-input::placeholder {
  color: var(--c-text-muted);
  opacity: 0.7;
}
.page-faq .faq-search-input:focus {
  outline: none;
  border-color: var(--c-secondary);
  box-shadow: 0 0 0 3px rgba(0,255,135,0.15);
}
.page-faq .faq-search-icon {
  position: absolute;
  left: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--c-text-muted);
  pointer-events: none;
}

/* 分类列表 */
.page-faq .faq-categories {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.page-faq .faq-cat-btn {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  width: 100%;
  padding: 0.85rem 1rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: var(--cat-size);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  text-align: left;
}
.page-faq .faq-cat-btn:hover,
.page-faq .faq-cat-btn:focus-visible {
  background: var(--c-surface);
  border-color: var(--c-border);
  color: var(--c-text);
}
.page-faq .faq-cat-btn.active {
  background: var(--c-surface);
  border-color: rgba(138,45,226,0.3);
  box-shadow: inset 3px 0 0 var(--gradient-primary);
  color: var(--c-text);
  font-weight: 600;
}
.page-faq .cat-indicator {
  display: inline-flex;
  width: var(--indicator-size);
  height: var(--indicator-size);
  border-radius: 3px;
  background: var(--cat-color, var(--c-accent));
  flex-shrink: 0;
  transition: transform 0.2s;
}
.page-faq .faq-cat-btn:hover .cat-indicator {
  transform: scale(1.2);
}

/* ===== 右侧内容 ===== */
.page-faq .faq-content {
  flex: 1;
  min-width: 0;
}

/* 各个区块 */
.page-faq .faq-section {
  display: none;
  padding: var(--space-lg);
  background: var(--c-surface);
  border-radius: var(--faq-radius);
  border: 1px solid var(--c-border);
  margin-bottom: var(--space-md);
  transition: opacity 0.3s ease;
}
.page-faq .faq-section.active {
  display: block;
}
.page-faq .faq-section-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  margin-bottom: 0.75rem;
  color: var(--c-text);
  letter-spacing: 0.02em;
}
.page-faq .faq-section-desc {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-text);
  margin-bottom: 1rem;
}
.page-faq .faq-steps {
  list-style: decimal;
  padding-left: 1.4rem;
  line-height: 1.8;
  color: var(--c-text);
  margin-bottom: 1rem;
}
.page-faq .faq-steps li {
  margin-bottom: 0.3rem;
}
.page-faq .faq-step-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin-top: 0.5rem;
  border: 1px solid var(--c-border);
  display: block;
  object-fit: cover;
}

/* 无JS降级：所有区块可见，JS激活后隐藏非激活 */
.page-faq[data-js] .faq-section:not(.active) {
  display: none;
}
.page-faq:not([data-js]) .faq-section {
  display: block;
}

/* ===== 响应式：桌面端 ===== */
@media (min-width: 768px) {
  .page-faq .faq-layout {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-faq .faq-sidebar {
    width: var(--faq-sidebar-w);
    position: sticky;
    top: calc(var(--header-h) + 1rem);
    align-self: flex-start;
  }
  .page-faq .faq-content {
    flex: 1;
  }
  .page-faq .faq-section {
    margin-bottom: 0;
  }
  .page-faq .faq-section + .faq-section {
    margin-top: var(--space-md);
  }
}

/* 极小屏额外保护 */
@media (max-width: 440px) {
  .page-faq .faq-section {
    padding: var(--space-md);
  }
  .page-faq .faq-cat-btn {
    padding: 0.7rem 0.8rem;
    font-size: 0.85rem;
  }
  .page-faq .faq-search-input {
    padding-left: 2.2rem;
    font-size: 0.85rem;
  }
}

.page-faq {
  --cat-color: transparent;
}