.page-faq {
  display: block;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: var(--space-md, 16px);
  padding-top: calc(var(--header-h, 60px) + var(--space-md, 16px));
  color: var(--color-white, #FFFFFF);
  font-family: var(--font-body, 'Georgia', serif);
  font-size: 16px;
  line-height: 1.7;
  --faq-item-bg: rgba(17, 34, 64, 0.6);
  --faq-item-radius: 12px;
  --faq-item-border: 1px solid rgba(45, 59, 90, 0.5);
  --faq-question-weight: 700;
  --faq-num-size: clamp(3rem, 10vw, 5.5rem);
  --faq-gap: var(--space-lg, 24px);
  --faq-padding: var(--space-md, 16px);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-lg, 24px);
  font-family: var(--font-nav, 'Arial', sans-serif);
  font-size: 14px;
  color: var(--color-gray, #B0B0B0);
}

.page-faq .breadcrumb a {
  color: var(--color-star-gold, #FFD700);
  text-decoration: none;
  transition: opacity var(--transition, 0.25s ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus {
  opacity: 0.75;
  text-decoration: underline;
}

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

/* 页面标题区 */
.page-faq__header {
  margin-bottom: var(--space-2xl, 32px);
  padding-bottom: var(--space-lg, 24px);
  border-bottom: 2px solid var(--color-grid-line, #2D3B5A);
}

.page-faq__title {
  font-family: var(--font-heading, 'Impact', sans-serif);
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.15;
  color: var(--color-white, #FFFFFF);
  margin: 0 0 var(--space-sm, 8px) 0;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.page-faq__sub {
  font-family: var(--font-body, 'Georgia', serif);
  font-size: 1.05rem;
  color: var(--color-gray, #B0B0B0);
  margin: 0;
  max-width: 680px;
}

/* 编号章节 */
.page-faq__section {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md, 16px);
  margin-bottom: var(--space-3xl, 40px);
  padding: var(--faq-padding);
  background: var(--faq-item-bg);
  border-radius: var(--faq-item-radius);
  border: var(--faq-item-border);
  position: relative;
}

.page-faq__num {
  font-family: var(--font-heading, 'Impact', sans-serif);
  font-size: var(--faq-num-size);
  line-height: 1;
  color: var(--color-star-gold, #FFD700);
  flex-shrink: 0;
  min-width: 1.2em;
  letter-spacing: -0.03em;
  opacity: 0.9;
  margin-top: 0.05em;
}

.page-faq__section-body {
  flex: 1;
  min-width: 0;
}

.page-faq__section-heading {
  font-family: var(--font-heading, 'Impact', sans-serif);
  font-size: clamp(1.4rem, 3.5vw, 1.9rem);
  line-height: 1.2;
  color: var(--color-white, #FFFFFF);
  margin: 0 0 var(--space-md, 16px) 0;
  letter-spacing: 0.01em;
}

/* 问答列表 */
.page-faq__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm, 8px);
}

.page-faq__item {
  background: var(--color-deep-space, #0B1A3B);
  border-radius: var(--radius-md, 8px);
  border: 1px solid var(--color-grid-line, #2D3B5A);
  overflow: hidden;
  transition: border-color var(--transition, 0.25s ease);
}

.page-faq__item[open] {
  border-color: var(--color-star-gold, #FFD700);
}

.page-faq__question {
  font-family: var(--font-heading, 'Impact', sans-serif);
  font-size: 1.05rem;
  font-weight: var(--faq-question-weight);
  color: var(--color-white, #FFFFFF);
  padding: var(--space-md, 16px) var(--space-lg, 24px);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm, 8px);
  transition: background var(--transition, 0.25s ease);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

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

.page-faq__question::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  background: var(--color-star-gold, #FFD700);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='9 18 15 12 9 6'%3E%3C/polyline%3E%3C/svg%3E") center/contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='9 18 15 12 9 6'%3E%3C/polyline%3E%3C/svg%3E") center/contain no-repeat;
  transition: transform var(--transition, 0.25s ease);
}

.page-faq__item[open] .page-faq__question::before {
  transform: rotate(90deg);
}

.page-faq__question:hover,
.page-faq__question:focus {
  background: rgba(230, 57, 70, 0.08);
}

.page-faq__question:focus-visible {
  outline: 2px solid var(--color-star-gold, #FFD700);
  outline-offset: -2px;
}

.page-faq__answer {
  padding: 0 var(--space-lg, 24px) var(--space-md, 16px);
  font-family: var(--font-body, 'Georgia', serif);
  font-size: 0.95rem;
  color: var(--color-gray, #B0B0B0);
  line-height: 1.7;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.35s ease, padding 0.3s ease;
}

.page-faq__item[open] .page-faq__answer {
  max-height: 600px;
  opacity: 1;
  padding-top: 0;
  padding-bottom: var(--space-md, 16px);
}

.page-faq__answer a {
  color: var(--color-star-gold, #FFD700);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--transition, 0.25s ease);
}

.page-faq__answer a:hover,
.page-faq__answer a:focus {
  opacity: 0.75;
}

/* 图片容器 */
.page-faq__figure {
  margin: var(--space-lg, 24px) 0 0 0;
  position: relative;
  border-radius: var(--radius-md, 8px);
  overflow: hidden;
  background: var(--color-deep-space, #0B1A3B);
  border: 1px solid var(--color-grid-line, #2D3B5A);
  display: inline-block;
  max-width: 100%;
}

.page-faq__img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--color-surface, #0f1d3f);
}

.page-faq__figcap {
  font-family: var(--font-body, 'Georgia', serif);
  font-size: 0.8rem;
  color: var(--color-gray, #B0B0B0);
  padding: var(--space-xs, 4px) var(--space-sm, 8px);
  text-align: center;
  font-style: italic;
  letter-spacing: 0.02em;
}

/* 信任声明 */
.page-faq__trust {
  font-family: var(--font-body, 'Georgia', serif);
  font-size: 0.85rem;
  color: var(--color-gray, #B0B0B0);
  text-align: center;
  padding: var(--space-lg, 24px) 0;
  margin: 0;
  border-top: 1px solid var(--color-grid-line, #2D3B5A);
  opacity: 0.8;
}

/* 响应式 - 平板及以上 */
@media (min-width: 640px) {
  .page-faq {
    padding: var(--space-lg, 24px);
    padding-top: calc(var(--header-h, 60px) + var(--space-lg, 24px));
  }

  .page-faq__section {
    padding: var(--space-lg, 24px);
    gap: var(--space-lg, 24px);
  }

  .page-faq__num {
    font-size: clamp(3.5rem, 8vw, 5.5rem);
  }

  .page-faq__question {
    font-size: 1.1rem;
    padding: var(--space-md, 16px) var(--space-lg, 24px);
  }

  .page-faq__answer {
    font-size: 1rem;
    padding: 0 var(--space-lg, 24px) var(--space-md, 16px);
  }

  .page-faq__figure {
    max-width: 80%;
  }
}

@media (min-width: 900px) {
  .page-faq {
    padding: var(--space-xl, 32px) var(--space-2xl, 48px);
    padding-top: calc(var(--header-h, 60px) + var(--space-xl, 32px));
  }

  .page-faq__section {
    padding: var(--space-xl, 32px);
    gap: var(--space-xl, 32px);
  }

  .page-faq__num {
    font-size: clamp(4rem, 6vw, 6rem);
    min-width: 1.3em;
  }

  .page-faq__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm, 8px);
  }

  .page-faq__figure {
    max-width: 60%;
  }

  .page-faq__question {
    font-size: 1.15rem;
    padding: var(--space-md, 16px) var(--space-xl, 32px);
  }

  .page-faq__answer {
    padding: 0 var(--space-xl, 32px) var(--space-md, 16px);
  }
}

@media (min-width: 1200px) {
  .page-faq__section {
    padding: var(--space-2xl, 32px) var(--space-2xl, 32px);
  }

  .page-faq__figure {
    max-width: 50%;
  }
}