/* ===== 页面专属 CSS：page-faq ===== */
.page-faq {
  --faq-index-width: 280px;
  --faq-gap: 40px;
  --faq-category-spacing: 48px;
  --faq-border-radius: 6px;
  --faq-icon-size: 20px;
  --faq-hero-padding: 48px 0 40px;
  --faq-search-max-width: 420px;

  font-family: var(--font-body);
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  position: relative;
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 0 0;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.3px;
}
.page-faq .breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-faq .breadcrumb a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}
.page-faq .breadcrumb .separator {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.875rem;
}
.page-faq .breadcrumb .text-mono {
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-right: 4px;
}

/* ---------- Hero 区域 ---------- */
.page-faq .faq-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #002266 100%);
  padding: var(--faq-hero-padding);
  position: relative;
  isolation: isolate;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(45deg, transparent, transparent 20px, rgba(255,215,0,0.04) 20px, rgba(255,215,0,0.04) 21px);
  pointer-events: none;
  z-index: 0;
}
.page-faq .faq-hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero__icon-wrap {
  margin-bottom: 12px;
  position: relative;
}
.page-faq .faq-hero__icon {
  display: block;
  width: 120px;
  height: auto;
  max-width: 100%;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(255,215,0,0.35), 0 8px 32px rgba(0,0,0,0.3);
  background: var(--color-bg-light);
  object-fit: cover;
}
.page-faq .faq-hero__title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin: 8px 0 6px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.25);
}
.page-faq .faq-hero__subtitle {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--color-accent-light);
  margin: 0 0 20px;
  opacity: 0.92;
  letter-spacing: 0.5px;
}
.page-faq .faq-hero__search {
  position: relative;
  width: 100%;
  max-width: var(--faq-search-max-width);
}
.page-faq .faq-hero__search-input {
  display: block;
  width: 100%;
  padding: 12px 42px 12px 18px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  background: rgba(255,255,255,0.12);
  border: var(--border-thin);
  border-color: rgba(255,215,0,0.3);
  border-radius: var(--faq-border-radius);
  color: var(--color-text-primary);
  outline: none;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  backdrop-filter: blur(4px);
}
.page-faq .faq-hero__search-input::placeholder {
  color: rgba(255,255,255,0.5);
}
.page-faq .faq-hero__search-input:focus {
  border-color: var(--color-accent);
  background: rgba(255,255,255,0.18);
  box-shadow: 0 0 0 2px rgba(255,215,0,0.15);
}
.page-faq .faq-hero__search-icon {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-accent);
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-faq .faq-hero__search-icon svg {
  display: block;
  width: 18px;
  height: 18px;
}

/* ---------- 左右布局 ---------- */
.page-faq .faq-layout {
  display: flex;
  flex-wrap: wrap;
  gap: var(--faq-gap);
  padding: 40px 0 64px;
  position: relative;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  flex: 0 0 var(--faq-index-width);
  max-width: var(--faq-index-width);
  position: relative;
  align-self: flex-start;
  top: calc(var(--header-height) + 24px);
  position: sticky;
  z-index: 2;
}
.page-faq .faq-index__bg {
  position: absolute;
  inset: 0;
  border-radius: var(--faq-border-radius);
  overflow: hidden;
  z-index: 0;
  background: var(--color-bg-dark);
}
.page-faq .faq-index__bg-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  mix-blend-mode: overlay;
}
.page-faq .faq-index__content {
  position: relative;
  z-index: 1;
  padding: 28px 20px 32px;
  border: var(--border-thin);
  border-color: rgba(255,215,0,0.12);
  border-radius: var(--faq-border-radius);
  background: rgba(26,26,46,0.88);
  backdrop-filter: blur(6px);
}
.page-faq .faq-index__heading {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  letter-spacing: 3px;
  color: var(--color-accent);
  margin: 0 0 24px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,215,0,0.2);
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-primary);
  text-decoration: none;
  border-radius: 4px;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  border: 1px solid transparent;
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(255,215,0,0.08);
  border-color: rgba(255,215,0,0.25);
  color: var(--color-accent);
  outline: none;
}
.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  opacity: 0.7;
  min-width: 24px;
}
.page-faq .faq-index__cta {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,215,0,0.15);
  text-align: center;
}
.page-faq .faq-index__cta-text {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0 0 12px;
}
.page-faq .faq-index__cta .btn {
  font-size: 0.8125rem;
  padding: 10px 20px;
  border-radius: var(--faq-border-radius);
}

/* ---------- 右侧问答区 ---------- */
.page-faq .faq-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--faq-category-spacing);
}

/* ---------- 每个分类 ---------- */
.page-faq .faq-category {
  background: var(--color-text-primary);
  border-radius: var(--faq-border-radius);
  box-shadow: var(--shadow-sm);
  border: var(--border-thin);
  border-color: rgba(0,51,153,0.08);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}
.page-faq .faq-category:hover {
  box-shadow: var(--shadow-md);
}
.page-faq .faq-category__header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 24px;
  background: linear-gradient(135deg, rgba(0,51,153,0.04) 0%, rgba(0,51,153,0.01) 100%);
  border-bottom: 2px solid var(--color-accent);
}
.page-faq .faq-category__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  opacity: 0.7;
}
.page-faq .faq-category__title {
  font-family: var(--font-heading);
  font-size: clamp(0.95rem, 2.5vw, 1.15rem);
  letter-spacing: 2px;
  color: var(--color-primary);
  margin: 0;
}
.page-faq .faq-category__items {
  display: flex;
  flex-direction: column;
}

/* ---------- 手风琴项 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid rgba(0,51,153,0.06);
  transition: background var(--transition-fast);
}
.page-faq .faq-item:last-child {
  border-bottom: none;
}
.page-faq .faq-item[open] {
  background: rgba(0,51,153,0.02);
}
.page-faq .faq-item__question {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  color: var(--color-text-dark);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}
.page-faq .faq-item__question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__question::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--faq-icon-size);
  height: var(--faq-icon-size);
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
  border-radius: 50%;
  line-height: 1;
  transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}
.page-faq .faq-item[open] > .faq-item__question::before {
  content: "−";
  background: var(--color-accent);
  color: var(--color-primary);
}
.page-faq .faq-item__question:hover {
  background: rgba(255,215,0,0.05);
  color: var(--color-primary);
}
.page-faq .faq-item__question:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
  border-radius: 2px;
}
.page-faq .faq-item__answer {
  padding: 0 24px 18px 56px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-dark);
  opacity: 0.88;
}
.page-faq .faq-item__answer p {
  margin: 0 0 6px;
}
.page-faq .faq-item__answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__answer a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: rgba(0,51,153,0.3);
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}
.page-faq .faq-item__answer a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}
.page-faq .faq-item__answer strong {
  color: var(--color-primary);
  font-weight: 700;
}

/* ---------- 底部更多 ---------- */
.page-faq .faq-more {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 24px;
  background: linear-gradient(135deg, rgba(0,51,153,0.03) 0%, rgba(139,0,0,0.03) 100%);
  border-radius: var(--faq-border-radius);
  border: 1px dashed rgba(0,51,153,0.15);
  text-align: center;
}
.page-faq .faq-more__text {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text-dark);
  margin: 0;
  opacity: 0.8;
}
.page-faq .faq-more .btn {
  font-size: 0.875rem;
  padding: 12px 32px;
  border-radius: var(--faq-border-radius);
}

/* ---------- 按钮变体 ---------- */
.page-faq .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;
  border: 1.5px solid var(--color-accent);
  transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}
.page-faq .btn-primary:hover {
  background: transparent;
  color: var(--color-accent);
  box-shadow: inset 0 0 0 1.5px var(--color-accent);
}
.page-faq .btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;
  border: 1.5px solid var(--color-primary);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.page-faq .btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-text-primary);
  border-color: var(--color-primary);
}

/* ---------- 响应式：移动端优先调整 ---------- */
@media (max-width: 767px) {
  .page-faq {
    --faq-index-width: 100%;
    --faq-gap: 24px;
    --faq-category-spacing: 28px;
    --faq-hero-padding: 36px 0 32px;
  }
  .page-faq .faq-hero__icon {
    width: 80px;
    height: auto;
  }
  .page-faq .faq-hero__search-input {
    padding: 10px 38px 10px 14px;
    font-size: 0.875rem;
  }
  .page-faq .faq-layout {
    flex-direction: column;
    padding: 24px 0 40px;
  }
  .page-faq .faq-index {
    position: relative;
    top: 0;
    max-width: 100%;
    flex-basis: auto;
  }
  .page-faq .faq-index__content {
    padding: 20px 16px 24px;
  }
  .page-faq .faq-index__list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
  }
  .page-faq .faq-index__link {
    padding: 8px 12px;
    font-size: 0.75rem;
    gap: 6px;
  }
  .page-faq .faq-index__num {
    min-width: 18px;
    font-size: 0.6875rem;
  }
  .page-faq .faq-index__cta {
    margin-top: 20px;
    padding-top: 16px;
  }
  .page-faq .faq-category__header {
    padding: 14px 16px;
  }
  .page-faq .faq-category__title {
    font-size: 0.875rem;
  }
  .page-faq .faq-item__question {
    padding: 14px 16px;
    font-size: 0.875rem;
  }
  .page-faq .faq-item__answer {
    padding: 0 16px 16px 48px;
    font-size: 0.875rem;
  }
  .page-faq .faq-more {
    padding: 24px 16px;
  }
  .page-faq .breadcrumb {
    font-size: 0.75rem;
    padding: 12px 0 0;
    flex-wrap: wrap;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .page-faq {
    --faq-index-width: 220px;
    --faq-gap: 28px;
  }
  .page-faq .faq-index__content {
    padding: 20px 14px 24px;
  }
  .page-faq .faq-index__link {
    font-size: 0.75rem;
    padding: 8px 10px;
  }
  .page-faq .faq-category__header {
    padding: 16px 20px;
  }
  .page-faq .faq-item__question {
    padding: 14px 20px;
  }
  .page-faq .faq-item__answer {
    padding: 0 20px 16px 52px;
  }
}

/* ---------- 打印 & 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0s !important;
    animation-duration: 0s !important;
  }
  .page-faq .faq-item[open] > .faq-item__question::before {
    transition: none;
  }
}

@media print {
  .page-faq .faq-hero {
    background: var(--color-primary) !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .page-faq .faq-index {
    position: relative;
    top: 0;
    page-break-inside: avoid;
  }
  .page-faq .faq-item__answer {
    opacity: 1;
  }
  .page-faq .faq-hero__search {
    display: none;
  }
}