.page-faq {
  --faq-sidebar-width: 280px;
  --faq-gap: 2rem;
  --faq-card-radius: 12px;
  --faq-bar-width: 5px;
  --faq-search-height: 52px;
  --faq-hero-padding: 4rem 0 2.5rem;
  --faq-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== Hero / 标题区 ========== */
.page-faq .faq-hero {
  background: var(--color-dark);
  padding: var(--faq-hero-padding);
  position: relative;
  overflow: hidden;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,107,26,0.08) 0%, transparent 50%);
  pointer-events: none;
}
.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}
.page-faq .breadcrumbs {
  margin-bottom: 1.25rem;
  font-family: var(--font-meta);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}
.page-faq .breadcrumbs a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--color-primary);
  text-decoration: underline;
}
.page-faq .faq-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-light);
  margin: 0 0 0.5rem;
  line-height: 1.1;
  position: relative;
  display: inline-block;
}
.page-faq .faq-title::before {
  content: "?";
  display: inline-block;
  font-size: 0.6em;
  color: var(--color-primary);
  margin-right: 0.2em;
  transform: skewX(-12deg);
}
.page-faq .faq-subtitle {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: rgba(255,255,255,0.7);
  margin: 0 0 1.5rem;
  max-width: 600px;
  line-height: 1.5;
}
.page-faq .faq-search-wrapper {
  position: relative;
  max-width: 480px;
}
.page-faq .faq-search-input {
  width: 100%;
  height: var(--faq-search-height);
  padding: 0 1rem 0 3rem;
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: 40px;
  background: rgba(255,255,255,0.06);
  color: var(--color-light);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  box-sizing: border-box;
}
.page-faq .faq-search-input::placeholder {
  color: rgba(255,255,255,0.35);
}
.page-faq .faq-search-input:focus {
  border-color: var(--color-primary);
  background: rgba(255,255,255,0.12);
}
.page-faq .faq-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255,255,255,0.3);
  display: flex;
  align-items: center;
  pointer-events: none;
}

/* ========== 主布局 ========== */
.page-faq .faq-main {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 2.5rem 1rem 4rem;
  max-width: var(--content-max-width);
  margin: 0 auto;
}

/* ========== 侧边栏（移动端隐藏） ========== */
.page-faq .faq-sidebar {
  display: none;
}
.page-faq .faq-sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-faq .faq-sidebar-cat {
  margin-bottom: 1.5rem;
}
.page-faq .faq-sidebar-cat-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: 0.5rem;
}
.page-faq .faq-sidebar-qs {
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-faq .faq-sidebar-qs li {
  margin-bottom: 0.25rem;
}
.page-faq .faq-sidebar-qs a {
  display: block;
  padding: 0.3rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-text);
  text-decoration: none;
  border-radius: 6px;
  transition: background var(--transition-fast), color var(--transition-fast);
  line-height: 1.4;
}
.page-faq .faq-sidebar-qs a:hover,
.page-faq .faq-sidebar-qs a:focus-visible {
  background: rgba(255,107,26,0.08);
  color: var(--color-primary);
}
.page-faq .faq-sidebar-qs a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ========== 内容区 ========== */
.page-faq .faq-content {
  flex: 1;
  min-width: 0;
}
.page-faq .faq-category {
  margin-bottom: 3rem;
  scroll-margin-top: calc(var(--header-height) + 1rem);
}
.page-faq .faq-category:last-child {
  margin-bottom: 0;
}
.page-faq .faq-category-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-dark);
  margin: 0 0 0.4rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--color-primary);
  display: inline-block;
}
.page-faq .faq-category-intro {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin: 0.5rem 0 1.5rem;
  max-width: 650px;
  line-height: 1.6;
}

/* ========== 单个问题卡片（details/summary） ========== */
.page-faq .faq-item {
  display: block;
  margin-bottom: 0.75rem;
  border-radius: var(--faq-card-radius);
  background: var(--color-light);
  box-shadow: var(--shadow-light);
  overflow: hidden;
  transition: box-shadow var(--faq-transition), transform var(--faq-transition);
  border: 1px solid rgba(0,0,0,0.04);
}
.page-faq .faq-item:hover {
  box-shadow: var(--shadow-medium);
  transform: translateY(-2px);
}
.page-faq .faq-item:focus-within {
  box-shadow: 0 0 0 3px rgba(255,107,26,0.25);
}
.page-faq .faq-q {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 1.25rem 1.25rem 1.75rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-dark);
  cursor: pointer;
  list-style: none;
  position: relative;
  user-select: none;
  transition: color var(--transition-fast);
  line-height: 1.5;
}
.page-faq .faq-q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-q::marker {
  display: none;
  content: "";
}
.page-faq .faq-q::before {
  content: "Q";
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-light);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}
.page-faq .faq-q::after {
  content: "+";
  margin-left: auto;
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-text-muted);
  transition: transform var(--faq-transition), color var(--faq-transition);
  flex-shrink: 0;
}
.page-faq .faq-item[open] .faq-q::after {
  transform: rotate(45deg);
  color: var(--color-primary);
}
.page-faq .faq-item[open] .faq-q {
  color: var(--color-primary);
}

/* ========== 答案内容 ========== */
.page-faq .faq-answer {
  padding: 0 1.75rem 1.5rem;
  position: relative;
  border-left: var(--faq-bar-width) solid var(--color-primary);
  margin-left: 1.25rem;
  margin-bottom: 0.25rem;
}
.page-faq .faq-answer-bar {
  display: none;
}
.page-faq .faq-answer p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text);
  margin: 0 0 1rem;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-answer a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}
.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  color: var(--color-primary);
}
.page-faq .faq-answer strong {
  font-weight: 600;
  color: var(--color-dark);
}
.page-faq .faq-answer-img-top {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 1rem;
  object-fit: cover;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
}
.page-faq .faq-answer-img-right {
  display: block;
  width: 100%;
  max-width: 240px;
  height: auto;
  border-radius: 8px;
  margin: 0 0 1rem 0;
  object-fit: cover;
  background: var(--color-secondary);
}
@media (min-width: 600px) {
  .page-faq .faq-answer-img-right {
    float: right;
    margin: 0 0 1rem 1.5rem;
    max-width: 200px;
  }
}

/* ========== data-reveal 动画 ========== */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.page-faq [data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ========== 桌面端 ≥768px ========== */
@media (min-width: 768px) {
  .page-faq {
    --faq-hero-padding: 5rem 0 3rem;
  }
  .page-faq .faq-main {
    flex-direction: row;
    gap: var(--faq-gap);
    padding: 3rem 1.5rem 5rem;
  }
  .page-faq .faq-sidebar {
    display: block;
    width: var(--faq-sidebar-width);
    flex-shrink: 0;
    position: sticky;
    top: calc(var(--header-height) + 1.5rem);
    align-self: flex-start;
    max-height: calc(100vh - var(--header-height) - 3rem);
    overflow-y: auto;
    padding-right: 0.5rem;
    scrollbar-width: thin;
  }
  .page-faq .faq-sidebar::-webkit-scrollbar {
    width: 4px;
  }
  .page-faq .faq-sidebar::-webkit-scrollbar-thumb {
    background: rgba(0,0,0,0.15);
    border-radius: 4px;
  }
  .page-faq .faq-content {
    max-width: calc(100% - var(--faq-sidebar-width) - var(--faq-gap));
  }
  .page-faq .faq-category-title {
    font-size: clamp(1.6rem, 2.5vw, 2.4rem);
  }
  .page-faq .faq-q {
    font-size: 1.05rem;
    padding: 1.35rem 1.5rem 1.35rem 2rem;
  }
  .page-faq .faq-answer {
    padding: 0 2rem 1.75rem;
    margin-left: 1.75rem;
  }
  .page-faq .faq-answer p {
    font-size: 0.975rem;
  }
}

/* ========== 大桌面 ≥1024px ========== */
@media (min-width: 1024px) {
  .page-faq .faq-main {
    padding: 3.5rem 2rem 6rem;
  }
  .page-faq .faq-sidebar {
    width: 300px;
  }
  .page-faq .faq-answer-img-right {
    max-width: 260px;
  }
}

/* ========== 打印优化 ========== */
@media print {
  .page-faq .faq-hero {
    background: var(--color-light);
    padding: 1rem 0;
  }
  .page-faq .faq-title {
    color: var(--color-dark);
  }
  .page-faq .faq-subtitle {
    color: var(--color-text-muted);
  }
  .page-faq .faq-search-wrapper {
    display: none;
  }
  .page-faq .faq-sidebar {
    display: none;
  }
  .page-faq .faq-item {
    box-shadow: none;
    border: 1px solid #ccc;
  }
  .page-faq .faq-answer-img-top,
  .page-faq .faq-answer-img-right {
    max-width: 100% !important;
    float: none !important;
  }
}