/* ========== page-faq 专属样式 ========== */
.page-faq {
  --faq-accent: var(--primary-red, #E63946);
  --faq-border: var(--card-border, #3E4A56);
  --faq-surface: var(--dark-surface, #1F2833);
  --faq-bg: var(--dark-bg, #0B0C10);
  --faq-text: var(--light-text, #FFFFFF);
  --faq-dim: var(--dim-text, #B0B0B0);
  --faq-gold: var(--accent-gold, #F4A261);
  --faq-radius: 6px;
  --faq-transition: 0.25s ease;
}

.page-faq {
  background: var(--faq-bg);
  color: var(--faq-text);
  font-family: var(--body-font, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif);
  padding: 1.25rem 1rem 3rem;
  min-height: 60vh;
}

/* 容器 */
.page-faq .faq-container {
  max-width: 1200px;
  margin: 0 auto;
}

/* 面包屑 */
.page-faq .faq-breadcrumb {
  font-size: 0.8rem;
  color: var(--faq-dim);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.page-faq .faq-breadcrumb a {
  color: var(--faq-gold);
  text-decoration: none;
  transition: color var(--faq-transition);
}
.page-faq .faq-breadcrumb a:hover,
.page-faq .faq-breadcrumb a:focus-visible {
  color: var(--faq-accent);
  text-decoration: underline;
}
.page-faq .breadcrumb-sep {
  color: var(--faq-dim);
  opacity: 0.5;
}
.page-faq .faq-breadcrumb [aria-current="page"] {
  color: var(--faq-text);
  font-weight: 500;
}

/* 标题区 */
.page-faq .faq-title {
  font-family: var(--heading-font, Impact, 'Arial Black', sans-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--faq-text);
  margin: 0 0 0.25rem;
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.page-faq .title-underscore {
  color: var(--faq-accent);
  display: inline-block;
  animation: faq-blink 1.2s step-end infinite;
}
@keyframes faq-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}
.page-faq .faq-subtitle {
  font-size: 0.95rem;
  color: var(--faq-dim);
  margin: 0 0 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--faq-border);
}

/* 左右布局 */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* 侧边分类 */
.page-faq .faq-sidebar {
  flex: 0 0 auto;
}
.page-faq .faq-category-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-bottom: 1px solid var(--faq-border);
  padding-bottom: 0.75rem;
}
.page-faq .faq-cat-btn {
  background: transparent;
  border: 1px solid var(--faq-border);
  color: var(--faq-dim);
  font-family: var(--body-font, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.5rem 1.1rem;
  border-radius: var(--faq-radius);
  cursor: pointer;
  transition: all var(--faq-transition);
  white-space: nowrap;
}
.page-faq .faq-cat-btn:hover,
.page-faq .faq-cat-btn:focus-visible {
  border-color: var(--faq-accent);
  color: var(--faq-text);
  background: rgba(230, 57, 70, 0.08);
}
.page-faq .faq-cat-btn.is-active {
  background: var(--faq-accent);
  border-color: var(--faq-accent);
  color: #fff;
  font-weight: 600;
}
.page-faq .faq-sidebar-footnote {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--faq-dim);
  display: none;
}
.page-faq .faq-sidebar-footnote a {
  color: var(--faq-gold);
  text-decoration: none;
  font-weight: 500;
}
.page-faq .faq-sidebar-footnote a:hover {
  text-decoration: underline;
}

/* 内容区 */
.page-faq .faq-content {
  flex: 1 1 100%;
  min-width: 0;
}

/* 面板 */
.page-faq .faq-panel {
  display: none;
  animation: faq-fadeIn 0.3s ease forwards;
}
.page-faq .faq-panel.is-active {
  display: block;
}
@keyframes faq-fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.page-faq .panel-heading {
  font-family: var(--heading-font, Impact, 'Arial Black', sans-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--faq-accent);
  margin: 0 0 0.35rem;
  line-height: 1.2;
}
.page-faq .panel-desc {
  font-size: 0.9rem;
  color: var(--faq-dim);
  margin: 0 0 1.25rem;
}

/* 手风琴 */
.page-faq .faq-accordion {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.page-faq .accordion-item {
  background: var(--faq-surface);
  border: 1px solid var(--faq-border);
  border-radius: var(--faq-radius);
  overflow: hidden;
  transition: border-color var(--faq-transition);
}
.page-faq .accordion-item:focus-within {
  border-color: var(--faq-accent);
  box-shadow: 0 0 0 2px rgba(230, 57, 70, 0.2);
}
.page-faq .accordion-term {
  margin: 0;
}
.page-faq .accordion-toggle {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--faq-text);
  font-family: var(--body-font, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif);
  font-size: 0.95rem;
  font-weight: 500;
  text-align: left;
  padding: 1rem 1rem 1rem 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: background var(--faq-transition);
  position: relative;
}
.page-faq .accordion-toggle:hover {
  background: rgba(255, 255, 255, 0.03);
}
.page-faq .accordion-toggle:focus-visible {
  outline: 2px solid var(--faq-accent);
  outline-offset: -2px;
}
.page-faq .accordion-icon {
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--faq-accent);
  transition: transform var(--faq-transition);
}
.page-faq .accordion-toggle[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
  color: var(--faq-gold);
}
.page-faq .accordion-label {
  flex: 1 1 auto;
  line-height: 1.4;
}
.page-faq .accordion-def {
  margin: 0;
  padding: 0 1.25rem 1.25rem;
  color: var(--faq-dim);
  font-size: 0.9rem;
  line-height: 1.6;
}
.page-faq .accordion-def[hidden] {
  display: none;
}
.page-faq .accordion-body {
  max-width: 680px;
}
.page-faq .accordion-body p {
  margin: 0 0 0.75rem;
}
.page-faq .accordion-body p:last-child {
  margin-bottom: 0;
}
.page-faq .accordion-body strong {
  color: var(--faq-gold);
  font-weight: 600;
}
.page-faq .accordion-body a {
  color: var(--faq-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.page-faq .accordion-body a:hover {
  color: var(--faq-gold);
}

/* 内联图片 */
.page-faq .faq-inline-img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 0.75rem 0 0.25rem;
  border: 1px solid var(--faq-border);
  object-fit: cover;
  background: var(--faq-surface);
}

/* ========== 桌面端适配 ========== */
@media (min-width: 768px) {
  .page-faq {
    padding: 2rem 2rem 4rem;
  }
  .page-faq .faq-title {
    font-size: 2.6rem;
  }
  .page-faq .faq-subtitle {
    font-size: 1rem;
    margin-bottom: 2rem;
  }
  .page-faq .faq-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 2.5rem;
  }
  .page-faq .faq-sidebar {
    flex: 0 0 200px;
    position: sticky;
    top: 2rem;
  }
  .page-faq .faq-category-list {
    flex-direction: column;
    gap: 0.35rem;
    border-bottom: none;
    padding-bottom: 0;
    border-left: 2px solid var(--faq-border);
    padding-left: 0.5rem;
  }
  .page-faq .faq-cat-btn {
    width: 100%;
    text-align: left;
    border: none;
    border-radius: 0;
    padding: 0.55rem 0.75rem;
    font-size: 0.9rem;
    border-left: 3px solid transparent;
    transition: all var(--faq-transition);
  }
  .page-faq .faq-cat-btn:hover,
  .page-faq .faq-cat-btn:focus-visible {
    background: rgba(230, 57, 70, 0.06);
    border-left-color: var(--faq-dim);
  }
  .page-faq .faq-cat-btn.is-active {
    background: rgba(230, 57, 70, 0.1);
    border-left-color: var(--faq-accent);
    color: var(--faq-accent);
    font-weight: 600;
  }
  .page-faq .faq-sidebar-footnote {
    display: block;
    border-top: 1px solid var(--faq-border);
    padding-top: 0.75rem;
    margin-top: 0.75rem;
  }
  .page-faq .faq-content {
    flex: 1 1 0;
    min-width: 0;
  }
  .page-faq .panel-heading {
    font-size: 1.6rem;
  }
  .page-faq .accordion-toggle {
    padding: 1.1rem 1.25rem 1.1rem 1.5rem;
    font-size: 1rem;
  }
  .page-faq .accordion-def {
    padding: 0 1.5rem 1.5rem;
    font-size: 0.95rem;
  }
  .page-faq .faq-inline-img {
    max-width: 360px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-sidebar {
    flex-basis: 220px;
  }
  .page-faq .faq-title {
    font-size: 3rem;
  }
  .page-faq .faq-layout {
    gap: 3rem;
  }
}

/* 打印 */
@media print {
  .page-faq {
    background: #fff;
    color: #222;
    padding: 0.5in;
  }
  .page-faq .faq-cat-btn.is-active {
    background: #ddd;
    color: #000;
    border-color: #999;
  }
  .page-faq .accordion-toggle {
    color: #222;
  }
  .page-faq .accordion-def {
    color: #444;
  }
  .page-faq .accordion-def[hidden] {
    display: block !important;
  }
  .page-faq .accordion-icon {
    display: none;
  }
}