/* ===== 页面专属 CSS：.page-faq ===== */
.page-faq {
  --faq-gap: 2rem;
  --faq-item-padding: 1rem 0;
  --faq-q-gap: 0.5rem;
  background: var(--bg-light);
  color: var(--text-primary);
}

/* 隐藏屏幕阅读 */
.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;
}

/* ---- 面包屑 ---- */
.page-faq .breadcrumb {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}
.page-faq .breadcrumb a {
  color: var(--primary);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover {
  text-decoration: underline;
}
.page-faq .breadcrumb .sep {
  color: var(--border);
}
.page-faq .breadcrumb [aria-current] {
  font-weight: bold;
}

/* ---- 首屏区 ---- */
.page-faq .faq-hero {
  position: relative;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-light) 70%);
  padding: 3rem 1rem 2rem;
  overflow: hidden;
}
.page-faq .faq-hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  margin: 0.25rem 0 0.5rem;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}
.page-faq .faq-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 40rem;
}
.page-faq .faq-hero-accent {
  position: absolute;
  top: -2rem;
  right: -2rem;
  width: 12rem;
  height: 12rem;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  opacity: 0.25;
  border-radius: 50%;
  pointer-events: none;
}

/* ---- 筛选栏 ---- */
.page-faq .faq-filter-bar {
  padding: 1rem 1rem 0;
}
.page-faq .faq-filter-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
}
.page-faq #faq-filter-input {
  flex: 1 1 220px;
  max-width: 400px;
  padding: 0.625rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--glass);
  backdrop-filter: blur(4px);
  font-size: 1rem;
  color: var(--text-primary);
  transition: border-color var(--transition);
}
.page-faq #faq-filter-input:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(255,140,66,0.15);
}
.page-faq .filter-hint {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ---- FAQ 列表 ---- */
.page-faq .faq-list {
  padding: 2rem 1rem 3rem;
}
.page-faq .faq-group {
  margin-bottom: var(--faq-gap);
  background: var(--glass);
  backdrop-filter: blur(4px);
  border-radius: 1.25rem;
  padding: 1.5rem;
  border: 1px solid var(--border);
}
.page-faq .faq-group-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  margin: 0 0 1rem;
  color: var(--primary);
  border-bottom: 2px solid var(--secondary);
  padding-bottom: 0.5rem;
}
.page-faq .faq-group-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 0.75rem;
  object-fit: contain;
  background: var(--bg-light);
  margin-bottom: 1.25rem;
  display: block;
}
.page-faq .faq-items {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--border);
  padding: var(--faq-item-padding);
  cursor: pointer;
  transition: background var(--transition);
}
.page-faq .faq-item:last-child {
  border-bottom: none;
}
.page-faq .faq-item:hover {
  background: rgba(75,155,130,0.04);
}
.page-faq .faq-q {
  display: flex;
  align-items: center;
  gap: var(--faq-q-gap);
  font-weight: bold;
  font-size: 1.0625rem;
  color: var(--text-primary);
  user-select: none;
}
.page-faq .faq-q-icon {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  line-height: 1.5rem;
  text-align: center;
  font-weight: bold;
  color: var(--accent);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.page-faq .faq-item[data-faq-open="true"] .faq-q-icon {
  transform: rotate(45deg);
}
.page-faq .faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 0 0 2rem;
  line-height: 1.7;
  color: var(--text-secondary);
}
.page-faq .faq-item[data-faq-open="true"] .faq-a {
  max-height: 20rem;
  padding: 0.75rem 0 0.25rem 2rem;
}
.page-faq .faq-a a {
  color: var(--primary);
  text-decoration: underline;
}
.page-faq .data-highlight {
  color: var(--accent);
  font-weight: bold;
}

/* ---- CTA 区域 ---- */
.page-faq .faq-cta {
  text-align: center;
  padding: 2.5rem 1rem;
  background: linear-gradient(135deg, var(--bg-light) 0%, var(--secondary) 100%);
  border-top: 1px solid var(--border);
}
.page-faq .faq-cta h2 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  margin: 0 0 0.75rem;
  color: var(--text-primary);
}
.page-faq .faq-cta p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.page-faq .faq-cta a {
  color: var(--accent);
  text-decoration: none;
  font-weight: bold;
}
.page-faq .faq-cta a:hover {
  text-decoration: underline;
}

/* ---- 移动端优先调整 ---- */
@media (max-width: 576px) {
  .page-faq .faq-hero h1 {
    font-size: 1.75rem;
  }
  .page-faq .faq-subtitle {
    font-size: 1rem;
  }
  .page-faq .faq-group {
    padding: 1rem;
  }
  .page-faq .faq-group-title {
    font-size: 1.375rem;
  }
  .page-faq .faq-q {
    font-size: 0.9375rem;
  }
  .page-faq .faq-a {
    padding-left: 1.25rem;
  }
  .page-faq .faq-cta h2 {
    font-size: 1.375rem;
  }
}

/* ---- 桌面端网格增强 ---- */
@media (min-width: 768px) {
  .page-faq .faq-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    align-items: start;
  }
  .page-faq .faq-group {
    margin-bottom: 0;
  }
  .page-faq .faq-group:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    margin: 0 auto;
  }
}
</