/* ===== 页面专属：问答中心 .page-faq ===== */
.page-faq {
  --faq-title-color: var(--color-text, #1C1C1C);
  --faq-nav-active: var(--color-primary, #0066CC);
  --faq-nav-active-bg: rgba(0, 102, 204, 0.08);
  --faq-icon-size: 40px;
  --faq-arrow-size: 20px;
  --faq-radius: 8px;
  --faq-section-gap: 32px;
}

/* ---------- Hero 区域 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 24px 20px 32px;
  background: var(--color-bg, #F5F0E8);
  border-bottom: 2px solid var(--color-border, #D4C9B8);
  overflow: hidden;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-family: var(--font-primary, 'Inter', sans-serif);
  color: var(--color-gray, #6B6B6B);
  margin-bottom: 16px;
}

.page-faq .breadcrumb a {
  color: var(--color-primary, #0066CC);
  text-decoration: none;
  transition: color 0.2s;
}

.page-faq .breadcrumb a:hover {
  color: var(--color-primary-dark, #004499);
  text-decoration: underline;
}

.page-faq .breadcrumb-sep {
  color: var(--color-gray, #6B6B6B);
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--color-text, #1C1C1C);
  font-weight: 600;
}

.page-faq .faq-hero__text {
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--faq-title-color);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__desc {
  font-family: var(--font-primary, 'Inter', sans-serif);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray, #6B6B6B);
  margin: 0;
  max-width: 540px;
}

.page-faq .faq-hero__deco {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 200px;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.35;
  z-index: 0;
}

.page-faq .faq-deco-dots {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: left center;
}

/* ---------- 布局容器 ---------- */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  padding: 24px 20px 48px;
}

/* ---------- 分类导航（移动端折叠） ---------- */
.page-faq .faq-nav-wrap {
  flex-shrink: 0;
  margin-bottom: 24px;
}

.page-faq .faq-nav-details {
  border: 1px solid var(--color-border, #D4C9B8);
  border-radius: var(--faq-radius);
  background: #fff;
  overflow: hidden;
}

.page-faq .faq-nav-details[open] {
  border-color: var(--color-primary, #0066CC);
}

.page-faq .faq-nav-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text, #1C1C1C);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background 0.2s;
}

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

.page-faq .faq-nav-summary:hover {
  background: var(--faq-nav-active-bg);
}

.page-faq .faq-nav-current {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-nav-arrow {
  display: inline-flex;
  color: var(--color-primary, #0066CC);
  transition: transform 0.3s;
}

.page-faq .faq-nav-details[open] .faq-nav-arrow {
  transform: rotate(180deg);
}

/* 导航列表 */
.page-faq .faq-nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 4px 8px 12px;
}

.page-faq .faq-nav-radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.page-faq .faq-nav-label {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 6px;
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text, #1C1C1C);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  user-select: none;
}

.page-faq .faq-nav-label:hover {
  background: var(--faq-nav-active-bg);
}

.page-faq .faq-nav-radio:checked + .faq-nav-label {
  background: var(--faq-nav-active-bg);
  color: var(--faq-nav-active);
  font-weight: 700;
  border-left: 3px solid var(--faq-nav-active);
}

.page-faq .faq-nav-icon {
  flex-shrink: 0;
  width: var(--faq-icon-size);
  height: var(--faq-icon-size);
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-bg, #F5F0E8);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-faq .faq-nav-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-faq .faq-nav-text {
  flex: 1;
}

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

.page-faq .faq-section {
  display: none;
  animation: faqFadeIn 0.35s ease;
}

.page-faq #faq-cat-account:checked ~ .faq-content [data-faq-section="account"],
.page-faq #faq-cat-live:checked ~ .faq-content [data-faq-section="live"],
.page-faq #faq-cat-fav:checked ~ .faq-content [data-faq-section="fav"],
.page-faq #faq-cat-other:checked ~ .faq-content [data-faq-section="other"] {
  display: block;
}

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

.page-faq .faq-section__title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text, #1C1C1C);
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-highlight, #FFD166);
  letter-spacing: -0.01em;
}

/* ---------- 问题项（手风琴） ---------- */
.page-faq .faq-item {
  border: 1px solid var(--color-border, #D4C9B8);
  border-radius: var(--faq-radius);
  background: #fff;
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.page-faq .faq-item:hover {
  border-color: var(--color-primary, #0066CC);
  box-shadow: 0 2px 12px rgba(0, 102, 204, 0.08);
}

.page-faq .faq-item[open] {
  border-color: var(--color-primary, #0066CC);
}

.page-faq .faq-item__question {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  font-family: var(--font-primary, 'Inter', sans-serif);
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text, #1C1C1C);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background 0.2s;
}

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

.page-faq .faq-item__question:hover {
  background: rgba(0, 102, 204, 0.03);
}

.page-faq .faq-item__num {
  flex-shrink: 0;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary, #0066CC);
  background: var(--faq-nav-active-bg);
  padding: 2px 10px;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.page-faq .faq-item__text {
  flex: 1;
}

.page-faq .faq-item__icon {
  flex-shrink: 0;
  display: inline-flex;
  color: var(--color-primary, #0066CC);
  transition: transform 0.3s;
  width: var(--faq-arrow-size);
  height: var(--faq-arrow-size);
}

.page-faq .faq-item[open] .faq-item__icon {
  transform: rotate(90deg);
  color: var(--color-accent, #E63946);
}

.page-faq .faq-item__answer {
  padding: 0 18px 18px;
  font-family: var(--font-primary, 'Inter', sans-serif);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text, #1C1C1C);
  border-top: 1px solid var(--color-border, #D4C9B8);
  margin-top: 0;
  padding-top: 16px;
}

.page-faq .faq-item__answer p {
  margin: 0 0 8px;
}

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

.page-faq .faq-item__answer a {
  color: var(--color-primary, #0066CC);
  text-decoration: underline;
  transition: color 0.2s;
}

.page-faq .faq-item__answer a:hover {
  color: var(--color-primary-dark, #004499);
}

/* ---------- 联系引导 ---------- */
.page-faq .faq-cta {
  background: var(--color-sidebar-bg, #1C1C1C);
  color: var(--color-sidebar-text, #F5F0E8);
  padding: 48px 20px;
  margin-top: 8px;
}

.page-faq .faq-cta__inner {
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  text-align: center;
}

.page-faq .faq-cta__title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 12px;
  color: #fff;
  letter-spacing: -0.01em;
}

.page-faq .faq-cta__text {
  font-family: var(--font-primary, 'Inter', sans-serif);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-footer-text, #D4C9B8);
  margin: 0 0 24px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.page-faq .faq-cta .btn--primary {
  background: var(--color-primary, #0066CC);
  color: #fff;
  border: 2px solid var(--color-primary, #0066CC);
  padding: 12px 28px;
  border-radius: 6px;
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
}

.page-faq .faq-cta .btn--primary:hover {
  background: var(--color-primary-dark, #004499);
  border-color: var(--color-primary-dark, #004499);
  transform: translateY(-2px);
}

.page-faq .faq-cta .btn--outline {
  background: transparent;
  color: var(--color-highlight, #FFD166);
  border: 2px solid var(--color-highlight, #FFD166);
  padding: 12px 28px;
  border-radius: 6px;
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, transform 0.15s;
}

.page-faq .faq-cta .btn--outline:hover {
  background: var(--color-highlight, #FFD166);
  color: var(--color-text, #1C1C1C);
  transform: translateY(-2px);
}

/* ---------- 工具类 ---------- */
.page-faq .mono {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
}

/* ===== 响应式：平板 & 桌面 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 32px 40px 40px;
  }

  .page-faq .faq-hero__title {
    font-size: 38px;
  }

  .page-faq .faq-hero__desc {
    font-size: 17px;
  }

  .page-faq .faq-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 40px;
    padding: 32px 40px 56px;
  }

  .page-faq .faq-nav-wrap {
    width: 220px;
    flex-shrink: 0;
    margin-bottom: 0;
    position: sticky;
    top: 24px;
  }

  /* 桌面端强制展开导航，移除折叠样式 */
  .page-faq .faq-nav-details {
    border: none;
    background: transparent;
    border-radius: 0;
  }

  .page-faq .faq-nav-summary {
    display: none;
  }

  .page-faq .faq-nav-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 0;
  }

  .page-faq .faq-nav-label {
    padding: 14px 16px;
    border-radius: 8px;
    font-size: 16px;
    border-left: 3px solid transparent;
  }

  .page-faq .faq-nav-radio:checked + .faq-nav-label {
    border-left: 3px solid var(--faq-nav-active);
    background: var(--faq-nav-active-bg);
  }

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

  .page-faq .faq-section__title {
    font-size: 24px;
  }

  .page-faq .faq-item__question {
    padding: 18px 22px;
    font-size: 17px;
  }

  .page-faq .faq-item__answer {
    padding: 0 22px 20px;
    padding-top: 16px;
    font-size: 16px;
  }

  .page-faq .faq-cta {
    padding: 56px 40px;
  }

  .page-faq .faq-cta__title {
    font-size: 30px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: 40px 60px 48px;
  }

  .page-faq .faq-hero__title {
    font-size: 44px;
  }

  .page-faq .faq-layout {
    padding: 40px 60px 64px;
    gap: 56px;
  }

  .page-faq .faq-nav-wrap {
    width: 240px;
  }

  .page-faq .faq-nav-label {
    font-size: 17px;
    padding: 16px 20px;
  }

  .page-faq .faq-cta {
    padding: 64px 60px;
  }
}

/* 确保radio控制生效：导航与内容同层级 */
.page-faq .faq-nav-wrap {
  position: relative;
}

/* 分类切换核心逻辑：通过兄弟选择器控制内容显示 */
/* 注意：.faq-nav-radio 和 .faq-content 需在同一个父级下 */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
}

@media (min-width: 768px) {
  .page-faq .faq-layout {
    display: flex;
    flex-direction: row;
  }
}

.page-faq .faq-nav-radio:checked ~ .faq-content .faq-section {
  display: none;
}

/* 修正选择器精度：使用通用兄弟 + 嵌套 */
.page-faq .faq-nav-wrap:has(#faq-cat-account:checked) ~ .faq-content [data-faq-section="account"],
.page-faq .faq-nav-wrap:has(#faq-cat-live:checked) ~ .faq-content [data-faq-section="live"],
.page-faq .faq-nav-wrap:has(#faq-cat-fav:checked) ~ .faq-content [data-faq-section="fav"],
.page-faq .faq-nav-wrap:has(#faq-cat-other:checked) ~ .faq-content [data-faq-section="other"] {
  display: block;
}

/* 降级：如果浏览器不支持 :has，使用JS方案兜底，这里保留基础可见性 */
.page-faq .faq-section {
  display: block;
}

/* 默认展开第一个分类的问题列表（视觉上通过JS或:has控制），降级时全部可见 */
/* 无JS降级：所有分类都显示，互不影响 */
.page-faq .faq-section {
  display: block;
}

@media (min-width: 768px) {
  .page-faq .faq-section {
    display: block;
  }
}

/* 使用 :has 控制时覆盖 */
@supports (selector(:has(*))) {
  .page-faq .faq-section {
    display: none;
  }
  .page-faq .faq-nav-wrap:has(#faq-cat-account:checked) ~ .faq-content [data-faq-section="account"],
  .page-faq .faq-nav-wrap:has(#faq-cat-live:checked) ~ .faq-content [data-faq-section="live"],
  .page-faq .faq-nav-wrap:has(#faq-cat-fav:checked) ~ .faq-content [data-faq-section="fav"],
  .page-faq .faq-nav-wrap:has(#faq-cat-other:checked) ~ .faq-content [data-faq-section="other"] {
    display: block;
  }
}

/* 初始化：默认选中账号分类（页面加载后JS可同步） */
/* 通过JS在加载后设置 #faq-cat-account 为 checked 并更新当前显示名称 */
/* 纯CSS降级：所有分类可见，内容完整 */
.page-faq .faq-nav-list {
  position: relative;
}