/* ===== page-faq 专属样式 ===== */

.page-faq {
  --faq-category-accent: var(--color-accent-purple, #7B2D8E);
  --faq-icon-color: var(--color-accent-yellow, #FFD700);
  --faq-border-color: rgba(123, 45, 142, 0.3);
  --faq-panel-gap: 1.5rem;
}

/* 面包屑 */
.page-faq .breadcrumb {
  padding: var(--spacer-md, 1rem) 0 var(--spacer-sm, 0.5rem);
  font-size: var(--font-small, 0.875rem);
  color: var(--color-warm-white, #F5F5F5);
}
.page-faq .breadcrumb a {
  color: var(--color-accent-blue, #00D4FF);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover {
  color: var(--color-accent-yellow, #FFD700);
}
.page-faq .breadcrumb .separator {
  margin: 0 0.3em;
  opacity: 0.6;
}

/* Hero区域 */
.page-faq .faq-hero {
  display: flex;
  align-items: center;
  gap: var(--spacer-lg, 2rem);
  margin-bottom: var(--spacer-xl, 4rem);
  padding: var(--spacer-lg, 2rem) 0;
  border-bottom: 1px solid var(--faq-border-color);
}
.page-faq .faq-hero-image {
  flex: 0 0 240px;
  max-width: 240px;
}
.page-faq .faq-hero-image img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
}
.page-faq .faq-hero-content {
  flex: 1;
}
.page-faq .faq-hero-content h1 {
  font-size: var(--font-h1, 2.5rem);
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--color-warm-white, #F5F5F5);
  margin: 0 0 var(--spacer-sm, 0.5rem);
  background: linear-gradient(135deg, var(--color-primary, #0B1D3A), var(--color-accent-purple, #7B2D8E));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-faq .faq-hero-sub {
  font-size: var(--font-h3, 1.25rem);
  color: rgba(245, 245, 245, 0.7);
  margin: 0;
  line-height: 1.5;
}

/* 布局: 左侧分类导航 + 右侧面板 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--spacer-xl, 4rem);
  margin-bottom: var(--spacer-xl, 4rem);
}

/* 左侧分类导航 */
.page-faq .faq-category-nav {
  position: sticky;
  top: calc(var(--header-h, 56px) + var(--spacer-md, 1rem));
  align-self: start;
}
.page-faq .faq-category-heading {
  font-size: var(--font-h3, 1.25rem);
  font-weight: 700;
  color: var(--faq-category-accent);
  margin: 0 0 var(--spacer-md, 1rem);
  letter-spacing: 0.03em;
  padding-bottom: var(--spacer-sm, 0.5rem);
  border-bottom: 2px solid var(--faq-border-color);
}
.page-faq .faq-category-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacer-xs, 0.25rem);
}
.page-faq .faq-category-btn {
  display: block;
  width: 100%;
  padding: var(--spacer-sm, 0.5rem) var(--spacer-md, 1rem);
  font-size: var(--font-body, 1rem);
  font-weight: 500;
  color: var(--color-warm-white, #F5F5F5);
  background: transparent;
  border: none;
  border-radius: 4px;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  position: relative;
}
.page-faq .faq-category-btn:hover,
.page-faq .faq-category-btn:focus-visible {
  background: var(--color-transparent-dark, rgba(11,29,58,0.8));
  color: var(--color-accent-blue, #00D4FF);
  outline: none;
}
.page-faq .faq-category-btn.current {
  color: var(--color-accent-yellow, #FFD700);
  border-left: 3px solid var(--faq-category-accent);
  padding-left: calc(var(--spacer-md, 1rem) - 3px);
  background: var(--color-transparent-dark, rgba(11,29,58,0.8));
}

/* 右侧面板区域 */
.page-faq .faq-panels {
  min-width: 0;
}

/* 搜索框 */
.page-faq .faq-search {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacer-lg, 2rem);
  position: relative;
}
.page-faq .faq-search-input {
  flex: 1;
  padding: var(--spacer-sm, 0.5rem) var(--spacer-md, 1rem);
  padding-left: calc(var(--spacer-lg, 2rem) + 0.5rem);
  font-size: var(--font-body, 1rem);
  background: var(--color-transparent-dark, rgba(11,29,58,0.8));
  border: 1px solid var(--faq-border-color);
  border-radius: 6px;
  color: var(--color-warm-white, #F5F5F5);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.page-faq .faq-search-input::placeholder {
  color: rgba(245, 245, 245, 0.4);
}
.page-faq .faq-search-input:focus {
  outline: none;
  border-color: var(--color-accent-blue, #00D4FF);
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.3);
}
.page-faq .faq-search-icon {
  position: absolute;
  left: var(--spacer-sm, 0.5rem);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--faq-icon-color);
  pointer-events: none;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* 标签面板 */
.page-faq .faq-panel {
  display: none;
}
.page-faq .faq-panel.active {
  display: block;
}
.page-faq .faq-panel-title {
  font-size: var(--font-h2, 1.75rem);
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--faq-category-accent);
  margin: 0 0 var(--spacer-md, 1rem);
  padding-bottom: var(--spacer-sm, 0.5rem);
  border-bottom: 2px solid var(--faq-border-color);
}

/* 折叠面板 */
.page-faq .faq-accordion {
  display: flex;
  flex-direction: column;
  gap: var(--spacer-xs, 0.25rem);
}
.page-faq .faq-item {
  background: var(--color-transparent-dark, rgba(11,29,58,0.6));
  border: 1px solid var(--faq-border-color);
  border-radius: 6px;
  overflow: hidden;
  transition: box-shadow 0.3s;
}
.page-faq .faq-item:hover {
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.12);
}
.page-faq .faq-item[open] {
  border-color: var(--color-accent-blue, #00D4FF);
}
.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: var(--spacer-sm, 0.5rem);
  padding: var(--spacer-md, 1rem);
  font-weight: 600;
  font-size: var(--font-h3, 1.25rem);
  color: var(--color-warm-white, #F5F5F5);
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background 0.2s;
}
.page-faq .faq-question:hover {
  background: rgba(0, 212, 255, 0.05);
}
.page-faq .faq-question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-q-icon {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--faq-icon-color);
  color: var(--color-primary, #0B1D3A);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-weight: 800;
  font-size: 0.9rem;
}
.page-faq .faq-answer {
  padding: 0 var(--spacer-md, 1rem) var(--spacer-md, 1rem);
  color: rgba(245, 245, 245, 0.85);
  line-height: 1.7;
  font-size: var(--font-body, 1rem);
}
.page-faq .faq-answer a {
  color: var(--color-accent-blue, #00D4FF);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.page-faq .faq-answer a:hover {
  color: var(--color-accent-yellow, #FFD700);
}

/* 上下文图片（移动端截图） */
.page-faq .faq-context-image {
  margin-top: var(--spacer-lg, 2rem);
  text-align: center;
}
.page-faq .faq-context-image img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

/* 联系备注 */
.page-faq .faq-contact-note {
  margin-top: var(--spacer-lg, 2rem);
  padding: var(--spacer-md, 1rem);
  background: var(--color-transparent-dark, rgba(11,29,58,0.7));
  border-left: 3px solid var(--color-accent-blue, #00D4FF);
  border-radius: 0 6px 6px 0;
}
.page-faq .faq-contact-note-text {
  margin: 0;
  color: rgba(245, 245, 245, 0.7);
  font-size: var(--font-small, 0.875rem);
}

/* ===== 响应式（移动端优先） ===== */

/* 窄屏默认（单列） */
@media (max-width: 767px) {
  .page-faq .faq-hero {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacer-md, 1rem);
    padding: var(--spacer-md, 1rem) 0;
  }
  .page-faq .faq-hero-image {
    flex: none;
    max-width: 100%;
    width: 100%;
  }
  .page-faq .faq-hero-image img {
    width: 100%;
    height: auto;
  }
  .page-faq .faq-hero-content h1 {
    font-size: var(--font-h2, 1.75rem);
  }
  .page-faq .faq-layout {
    grid-template-columns: 1fr;
    gap: var(--spacer-lg, 2rem);
  }
  .page-faq .faq-category-nav {
    position: static;
    top: auto;
  }
  .page-faq .faq-category-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--spacer-xs, 0.25rem);
  }
  .page-faq .faq-category-btn {
    width: auto;
    padding: var(--spacer-xs, 0.25rem) var(--spacer-sm, 0.5rem);
    font-size: var(--font-small, 0.875rem);
    border: 1px solid var(--faq-border-color);
    border-radius: 4px;
  }
  .page-faq .faq-category-btn.current {
    border-left-width: 1px;
    padding-left: var(--spacer-sm, 0.5rem);
  }
  .page-faq .faq-panel-title {
    font-size: var(--font-h3, 1.25rem);
  }
  .page-faq .faq-question {
    font-size: var(--font-body, 1rem);
  }
  .page-faq .faq-context-image img {
    max-width: 200px;
    margin: 0 auto;
  }
}

/* 桌面增强 */
@media (min-width: 768px) {
  .page-faq .faq-hero-image {
    flex-basis: 280px;
  }
  .page-faq .faq-context-image {
    text-align: right;
  }
  .page-faq .faq-context-image img {
    max-width: 220px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero-image {
    flex-basis: 320px;
  }
  .page-faq .faq-panels {
    padding-right: var(--spacer-lg, 2rem);
  }
}