.page-faq {
  --faq-accent-line: var(--color-accent);
  --faq-card-bg: var(--color-white);
  --faq-border-light: var(--color-light-border);
  --faq-text-muted: var(--color-text-secondary);
  --faq-radius-panel: var(--radius-lg);
  --faq-shadow-panel: var(--shadow-card);
  --faq-transition: var(--transition-base);
}

.page-faq .container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-2xl);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-label);
  color: var(--faq-text-muted);
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.3px;
}

.page-faq .breadcrumb a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-faq .breadcrumb a:hover {
  color: var(--color-accent);
}

.page-faq .breadcrumb-sep {
  color: var(--faq-text-muted);
  margin: 0 2px;
}

/* 整体布局 - 移动端优先 */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

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

.page-faq .faq-aside {
  order: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--faq-border-light);
}

/* 标题区 */
.page-faq .faq-header {
  margin-bottom: var(--spacing-xl);
}

.page-faq .faq-header h1 {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-h1);
  line-height: var(--line-height-h1);
  color: var(--color-text);
  margin: 0 0 var(--spacing-sm);
}

.page-faq .faq-subtitle {
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  color: var(--faq-text-muted);
  max-width: 680px;
  margin: 0;
}

/* 标签系统 */
.page-faq .faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  position: relative;
}

.page-faq .faq-tabs input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.page-faq .tab-label {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-label);
  color: var(--faq-text-muted);
  background: transparent;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  user-select: none;
  white-space: nowrap;
  letter-spacing: 0.3px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  margin-bottom: -1px;
}

.page-faq .tab-label:hover {
  color: var(--color-text);
  background: var(--color-primary-light);
}

.page-faq .tab-label:active {
  transform: scale(0.97);
}

.page-faq .tab-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 4px;
  background: var(--color-light);
}

/* 选中态 */
#tab-schedule:checked ~ .tab-label[for="tab-schedule"],
#tab-shooting:checked ~ .tab-label[for="tab-shooting"],
#tab-report:checked ~ .tab-label[for="tab-report"],
#tab-version:checked ~ .tab-label[for="tab-version"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  background: var(--color-accent-light);
}

/* 面板容器 */
.page-faq .faq-panels {
  width: 100%;
  min-height: 360px;
}

.page-faq .faq-panel {
  display: none;
  background: var(--faq-card-bg);
  border-radius: var(--faq-radius-panel);
  box-shadow: var(--faq-shadow-panel);
  padding: var(--spacing-md);
  animation: faqFadeIn 0.3s ease-out;
}

@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#tab-schedule:checked ~ .faq-panels > .faq-panel[data-panel="schedule"],
#tab-shooting:checked ~ .faq-panels > .faq-panel[data-panel="shooting"],
#tab-report:checked ~ .faq-panels > .faq-panel[data-panel="report"],
#tab-version:checked ~ .faq-panels > .faq-panel[data-panel="version"] {
  display: block;
}

/* 问答项 - details/summary */
.page-faq .faq-item {
  border-left: 3px solid transparent;
  border-bottom: 1px solid var(--faq-border-light);
  transition: border-color var(--transition-base);
  margin-bottom: 0;
}

.page-faq .faq-item:last-child {
  border-bottom: none;
}

.page-faq .faq-item[open] {
  border-left-color: var(--faq-accent-line);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-sm);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-label);
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition-fast);
  user-select: none;
}

.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item summary::before {
  content: "";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
  transition: transform var(--transition-base);
  background: var(--color-accent-light);
  border-radius: 50%;
  line-height: 1;
}

.page-faq .faq-item summary::before {
  content: "+";
}

.page-faq .faq-item[open] summary::before {
  content: "−";
  transform: rotate(0deg);
}

.page-faq .faq-item summary:hover {
  color: var(--color-accent);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-answer {
  padding: 0 var(--spacing-sm) var(--spacing-md) calc(var(--spacing-sm) + 28px);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  color: var(--faq-text-muted);
}

.page-faq .faq-answer p {
  margin: 0 0 var(--spacing-sm);
}

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

/* 底部CTA */
.page-faq .faq-cta {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--color-light);
  border-radius: var(--faq-radius-panel);
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
}

.page-faq .faq-cta p {
  width: 100%;
  margin: 0 0 var(--spacing-xs);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-label);
  color: var(--color-text);
}

.page-faq .faq-cta .btn {
  padding: 10px 28px;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-label);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.page-faq .btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
  border: none;
}

.page-faq .btn-accent:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 4px 12px rgba(255, 111, 0, 0.3);
}

.page-faq .btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.page-faq .btn-outline:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-hover);
  color: var(--color-primary-hover);
}

/* 侧边装饰区 */
.page-faq .faq-decor {
  max-width: 180px;
  height: auto;
  border-radius: var(--radius-lg);
  opacity: 0.7;
  transition: opacity var(--transition-base);
}

.page-faq .faq-decor:hover {
  opacity: 1;
}

.page-faq .faq-aside-links {
  width: 100%;
  max-width: 240px;
}

.page-faq .faq-aside-title {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-h2);
  line-height: var(--line-height-h2);
  color: var(--color-text);
  margin: 0 0 var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.page-faq .faq-aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.page-faq .faq-aside-list li {
  margin: 0;
  padding: 0;
}

.page-faq .faq-aside-list a {
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-label);
  color: var(--color-link);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.page-faq .faq-aside-list a:hover {
  background: var(--color-primary-light);
  color: var(--color-accent);
}

/* 桌面端 ≥768px */
@media (min-width: 768px) {
  .page-faq .container {
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-2xl);
  }

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

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

  .page-faq .faq-aside {
    width: 280px;
    flex-shrink: 0;
    order: 1;
    border-top: none;
    padding-top: 0;
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-lg));
    align-items: flex-start;
  }

  .page-faq .faq-decor {
    max-width: 240px;
  }

  .page-faq .faq-panel {
    padding: var(--spacing-lg);
  }

  .page-faq .tab-label {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-body);
  }

  .page-faq .faq-cta {
    flex-wrap: nowrap;
    text-align: left;
    justify-content: flex-start;
    padding: var(--spacing-lg) var(--spacing-xl);
  }

  .page-faq .faq-cta p {
    width: auto;
    margin: 0 var(--spacing-md) 0 0;
    flex-shrink: 0;
  }

  .page-faq .faq-header h1 {
    font-size: var(--font-size-h1);
  }
}

/* 大桌面 ≥1024px */
@media (min-width: 1024px) {
  .page-faq .faq-aside {
    width: 320px;
  }

  .page-faq .faq-decor {
    max-width: 280px;
  }

  .page-faq .faq-panel {
    padding: var(--spacing-xl);
  }

  .page-faq .faq-item summary {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  .page-faq .faq-answer {
    padding-bottom: var(--spacing-lg);
  }
}

/* 确保图片响应 */
.page-faq img {
  max-width: 100%;
  height: auto;
}

/* 减少运动偏好 */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-panel {
    animation: none;
  }

  .page-faq .faq-item summary::before {
    transition: none;
  }

  .page-faq .tab-label {
    transition: none;
  }
}