.page-faq {
  --faq-sidebar-width: 240px;
  --faq-gap: 2rem;
  --faq-border-radius: 12px;
  --faq-card-bg: rgba(26, 45, 74, 0.5);
  --faq-timeline-line: var(--color-accent, #00F5FF);
  --faq-timeline-dot-size: 14px;
  --faq-heading-weight: 700;
  --faq-body-weight: 300;
  --faq-line-height-heading: 1.2;
  --faq-line-height-body: 1.8;
  background-color: var(--color-primary, #0B1D3A);
  color: var(--color-text-primary, #FFFFFF);
  font-family: "Noto Sans SC", sans-serif;
  font-weight: var(--faq-body-weight);
  line-height: var(--faq-line-height-body);
  padding-bottom: 3rem;
}

/* ===== 面包屑 ===== */
.page-faq .faq-breadcrumb {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 1rem 1.5rem 0;
  font-size: 0.875rem;
  color: var(--color-text-secondary, #B0BEC5);
}
.page-faq .faq-breadcrumb a {
  color: var(--color-accent, #00F5FF);
  text-decoration: none;
  transition: opacity var(--transition-fast, 0.2s ease);
}
.page-faq .faq-breadcrumb a:hover,
.page-faq .faq-breadcrumb a:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--color-focus, #00F5FF);
  outline-offset: 2px;
}
.page-faq .faq-breadcrumb .sep {
  margin: 0 0.5rem;
  color: var(--color-secondary, #C0C0C0);
}

/* ===== 顶部横幅 ===== */
.page-faq .faq-hero {
  position: relative;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 0 1.5rem;
  border-radius: var(--faq-border-radius);
  overflow: hidden;
  margin-top: 1rem;
  border: var(--border-thick, 3px) solid var(--color-border, #2A4A7F);
  box-shadow: var(--shadow-soft, 0 8px 32px rgba(0,0,0,0.3));
}
.page-faq .faq-hero-bg {
  position: relative;
  width: 100%;
  height: auto;
  line-height: 0;
}
.page-faq .faq-hero-img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  display: block;
}
.page-faq .faq-hero-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 2rem 2.5rem;
  background: linear-gradient(90deg, rgba(11,29,58,0.85) 0%, rgba(11,29,58,0.4) 100%);
}
.page-faq .faq-hero-content {
  max-width: 600px;
}
.page-faq .faq-hero-title {
  font-family: "Inter", "SF Pro Display", sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: var(--faq-line-height-heading);
  letter-spacing: -0.02em;
  color: var(--color-text-primary, #FFFFFF);
  margin: 0 0 0.5rem 0;
  text-shadow: 0 0 40px rgba(0,245,255,0.25);
}
.page-faq .faq-hero-desc {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: var(--color-text-secondary, #B0BEC5);
  margin: 0;
  max-width: 480px;
}

/* ===== 更新记录（时间轴） ===== */
.page-faq .faq-timeline {
  margin-top: 2.5rem;
  padding: 0 1.5rem;
}
.page-faq .faq-timeline .faq-section-heading {
  margin-bottom: 1.5rem;
}
.page-faq .faq-timeline-track {
  position: relative;
  padding-left: calc(var(--faq-timeline-dot-size) + 1.5rem);
  border-left: 2px solid var(--faq-timeline-line);
  margin-left: 0.5rem;
}
.page-faq .faq-timeline-item {
  position: relative;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
}
.page-faq .faq-timeline-item:last-child {
  margin-bottom: 0;
}
.page-faq .faq-timeline-dot {
  position: absolute;
  left: calc(-1 * (var(--faq-timeline-dot-size) / 2) - 1.5rem + 1px);
  top: 0.35rem;
  width: var(--faq-timeline-dot-size);
  height: var(--faq-timeline-dot-size);
  border-radius: 50%;
  background-color: var(--faq-timeline-line);
  box-shadow: 0 0 12px var(--color-shadow, rgba(0,245,255,0.3));
}
.page-faq .faq-timeline-body {
  background-color: var(--faq-card-bg);
  border: 1px solid var(--color-border, #2A4A7F);
  border-radius: var(--faq-border-radius);
  padding: 1rem 1.5rem;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: box-shadow var(--transition-normal, 0.3s ease);
}
.page-faq .faq-timeline-body:hover {
  box-shadow: var(--shadow-glow, 0 0 20px rgba(0,245,255,0.3));
}
.page-faq .faq-timeline-text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-primary, #FFFFFF);
  line-height: var(--faq-line-height-body);
}

/* ===== 主内容区（两栏） ===== */
.page-faq .faq-main {
  display: flex;
  gap: var(--faq-gap);
  margin-top: 2.5rem;
  padding: 0 1.5rem;
  align-items: flex-start;
}

/* ===== 左栏：目录 ===== */
.page-faq .faq-sidebar {
  flex: 0 0 var(--faq-sidebar-width);
  position: sticky;
  top: 2rem;
}
.page-faq .faq-sidebar-inner {
  background-color: var(--faq-card-bg);
  border: var(--border-thick, 3px) solid var(--color-border, #2A4A7F);
  border-radius: var(--faq-border-radius);
  padding: 1.5rem 1.25rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-soft, 0 8px 32px rgba(0,0,0,0.3));
}
.page-faq .faq-sidebar-heading {
  font-family: "Inter", "SF Pro Display", sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  line-height: var(--faq-line-height-heading);
  letter-spacing: 0.02em;
  color: var(--color-accent, #00F5FF);
  margin: 0 0 1rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent, #00F5FF);
}
.page-faq .faq-sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .faq-sidebar-list li {
  margin-bottom: 0.5rem;
}
.page-faq .faq-sidebar-list li:last-child {
  margin-bottom: 0;
}
.page-faq .faq-sidebar-link {
  display: block;
  padding: 0.5rem 0.75rem;
  color: var(--color-text-secondary, #B0BEC5);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 6px;
  border-left: 2px solid transparent;
  transition: background-color var(--transition-fast, 0.2s ease), border-color var(--transition-fast, 0.2s ease), color var(--transition-fast, 0.2s ease);
}
.page-faq .faq-sidebar-link:hover,
.page-faq .faq-sidebar-link:focus-visible {
  background-color: rgba(0,245,255,0.08);
  border-left-color: var(--color-accent, #00F5FF);
  color: var(--color-text-primary, #FFFFFF);
  outline: none;
}

/* ===== 右栏：内容详情 ===== */
.page-faq .faq-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* ===== 区块通用 ===== */
.page-faq .faq-section-heading {
  font-family: "Inter", "SF Pro Display", sans-serif;
  font-weight: var(--faq-heading-weight);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  line-height: var(--faq-line-height-heading);
  letter-spacing: -0.01em;
  color: var(--color-text-primary, #FFFFFF);
  margin: 0 0 1.25rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent, #00F5FF);
  display: inline-block;
}

/* ===== 常见问题卡片 ===== */
.page-faq .faq-questions-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-faq .faq-question-card {
  background-color: var(--faq-card-bg);
  border: 1px solid var(--color-border, #2A4A7F);
  border-radius: var(--faq-border-radius);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: box-shadow var(--transition-normal, 0.3s ease);
  overflow: hidden;
}
.page-faq .faq-question-card:hover {
  box-shadow: var(--shadow-glow, 0 0 20px rgba(0,245,255,0.3));
}
.page-faq .faq-question-card[open] {
  border-color: var(--color-accent, #00F5FF);
}
.page-faq .faq-question-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  font-family: "Inter", "SF Pro Display", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  line-height: var(--faq-line-height-heading);
  color: var(--color-text-primary, #FFFFFF);
  cursor: pointer;
  user-select: none;
  list-style: none;
}
.page-faq .faq-question-summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-question-summary:focus-visible {
  outline: 2px solid var(--color-focus, #00F5FF);
  outline-offset: -2px;
}
.page-faq .faq-question-icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  position: relative;
  transition: transform var(--transition-normal, 0.3s ease);
}
.page-faq .faq-question-icon::before,
.page-faq .faq-question-icon::after {
  content: "";
  position: absolute;
  background-color: var(--color-accent, #00F5FF);
  border-radius: 2px;
  transition: transform var(--transition-normal, 0.3s ease);
}
.page-faq .faq-question-icon::before {
  width: 100%;
  height: 2px;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
}
.page-faq .faq-question-icon::after {
  width: 2px;
  height: 100%;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
}
.page-faq .faq-question-card[open] .faq-question-icon {
  transform: rotate(45deg);
}
.page-faq .faq-question-answer {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary, #B0BEC5);
  line-height: var(--faq-line-height-body);
}
.page-faq .faq-question-answer a {
  color: var(--color-accent, #00F5FF);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--transition-fast, 0.2s ease);
}
.page-faq .faq-question-answer a:hover,
.page-faq .faq-question-answer a:focus-visible {
  opacity: 0.8;
  outline: 2px solid var(--color-focus, #00F5FF);
  outline-offset: 2px;
}

/* ===== 活动规则 ===== */
.page-faq .faq-rules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.page-faq .faq-rule-card {
  background-color: var(--faq-card-bg);
  border: 1px solid var(--color-border, #2A4A7F);
  border-radius: var(--faq-border-radius);
  padding: 1.5rem;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: box-shadow var(--transition-normal, 0.3s ease), border-color var(--transition-normal, 0.3s ease);
  display: flex;
  flex-direction: column;
}
.page-faq .faq-rule-card:hover {
  box-shadow: var(--shadow-glow, 0 0 20px rgba(0,245,255,0.3));
  border-color: var(--color-accent, #00F5FF);
}
.page-faq .faq-rule-title {
  font-family: "Inter", "SF Pro Display", sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  line-height: var(--faq-line-height-heading);
  color: var(--color-text-primary, #FFFFFF);
  margin: 0 0 0.5rem 0;
}
.page-faq .faq-rule-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary, #B0BEC5);
  line-height: var(--faq-line-height-body);
  margin: 0 0 1rem 0;
  flex: 1;
}
.page-faq .faq-rule-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--color-accent, #00F5FF);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: opacity var(--transition-fast, 0.2s ease);
}
.page-faq .faq-rule-link:hover,
.page-faq .faq-rule-link:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--color-focus, #00F5FF);
  outline-offset: 2px;
}

/* ===== 证件下载 ===== */
.page-faq .faq-downloads-wrapper {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  background-color: var(--faq-card-bg);
  border: 1px solid var(--color-border, #2A4A7F);
  border-radius: var(--faq-border-radius);
  padding: 1.5rem;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: box-shadow var(--transition-normal, 0.3s ease);
}
.page-faq .faq-downloads-wrapper:hover {
  box-shadow: var(--shadow-glow, 0 0 20px rgba(0,245,255,0.3));
}
.page-faq .faq-downloads-preview {
  flex: 0 0 180px;
  border: 2px solid var(--color-border, #2A4A7F);
  border-radius: 8px;
  overflow: hidden;
  line-height: 0;
  transition: box-shadow var(--transition-normal, 0.3s ease);
}
.page-faq .faq-downloads-preview:hover {
  box-shadow: 0 0 30px var(--color-shadow, rgba(0,245,255,0.3));
}
.page-faq .faq-downloads-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
.page-faq .faq-downloads-info {
  flex: 1;
  min-width: 0;
}
.page-faq .faq-downloads-text {
  font-size: 0.95rem;
  color: var(--color-text-secondary, #B0BEC5);
  line-height: var(--faq-line-height-body);
  margin: 0 0 1.25rem 0;
}
.page-faq .faq-downloads-btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  font-family: "Inter", "SF Pro Display", sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-primary, #0B1D3A);
  background-color: var(--color-accent, #00F5FF);
  border: none;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: box-shadow var(--transition-normal, 0.3s ease), transform var(--transition-fast, 0.2s ease);
  box-shadow: 0 0 0 transparent;
}
.page-faq .faq-downloads-btn:hover,
.page-faq .faq-downloads-btn:focus-visible {
  box-shadow: 0 0 30px var(--color-shadow, rgba(0,245,255,0.3));
  transform: translateY(-2px);
  outline: none;
}

/* ===== 联系提示 ===== */
.page-faq .faq-contact-tip {
  margin-top: 2.5rem;
  padding: 1.5rem;
  text-align: center;
  border-top: 1px solid var(--color-border, #2A4A7F);
}
.page-faq .faq-contact-text {
  font-size: 0.95rem;
  color: var(--color-text-secondary, #B0BEC5);
  margin: 0;
}
.page-faq .faq-contact-text a {
  color: var(--color-accent, #00F5FF);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--transition-fast, 0.2s ease);
}
.page-faq .faq-contact-text a:hover,
.page-faq .faq-contact-text a:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--color-focus, #00F5FF);
  outline-offset: 2px;
}

/* ===== 响应式：移动端优先，桌面增强 ===== */
@media (max-width: 768px) {
  .page-faq .faq-main {
    flex-direction: column;
  }
  .page-faq .faq-sidebar {
    flex: none;
    width: 100%;
    position: static;
  }
  .page-faq .faq-sidebar-inner {
    padding: 1rem 1.25rem;
  }
  .page-faq .faq-sidebar-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
  }
  .page-faq .faq-sidebar-list li {
    margin-bottom: 0;
  }
  .page-faq .faq-sidebar-link {
    padding: 0.4rem 0.75rem;
    font-size: 0.9rem;
    border-left: none;
    border-bottom: 2px solid transparent;
  }
  .page-faq .faq-sidebar-link:hover,
  .page-faq .faq-sidebar-link:focus-visible {
    border-left-color: transparent;
    border-bottom-color: var(--color-accent, #00F5FF);
  }
  .page-faq .faq-hero-overlay {
    padding: 1.25rem 1.5rem;
  }
  .page-faq .faq-timeline-track {
    padding-left: calc(var(--faq-timeline-dot-size) + 1rem);
  }
  .page-faq .faq-downloads-wrapper {
    flex-direction: column;
    align-items: center;
  }
  .page-faq .faq-downloads-preview {
    flex: none;
    max-width: 200px;
    width: 100%;
  }
  .page-faq .faq-rules-grid {
    grid-template-columns: 1fr;
  }
  .page-faq .faq-content {
    gap: 1.5rem;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .page-faq .faq-sidebar {
    flex: 0 0 200px;
  }
  .page-faq .faq-rules-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1025px) {
  .page-faq .faq-hero-overlay {
    padding: 2.5rem 3rem;
  }
  .page-faq .faq-sidebar {
    flex: 0 0 var(--faq-sidebar-width);
  }
}

/* ===== 平滑滚动（渐进增强） ===== */
@media (prefers-reduced-motion: no-preference) {
  .page-faq {
    scroll-behavior: smooth;
  }
}

/* ===== 键盘焦点 ===== */
.page-faq *:focus-visible {
  outline: 2px solid var(--color-focus, #00F5FF);
  outline-offset: 2px;
}