/* ========= page-faq 专属样式 ========= */
.page-faq {
  --faq-gap: 1.5rem;
  --faq-item-padding: 1.25rem;
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1rem 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}
.page-faq .breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover {
  text-decoration: underline;
}
.page-faq .breadcrumb__sep {
  color: var(--color-border);
}

/* 头部 */
.page-faq__header {
  text-align: center;
  padding: 2rem 1rem;
}
.page-faq__icon-wrap {
  margin-bottom: 1.25rem;
}
.page-faq__hero-icon {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
}
.page-faq__title {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 0.5rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-faq__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* 区块标题 */
.page-faq__section {
  padding: 2rem 1rem;
}
.page-faq__section-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-text);
  margin: 0 0 var(--faq-gap);
  border-bottom: var(--border-thick) solid var(--color-border);
  padding-bottom: 0.75rem;
}
.page-faq__section-title .badge {
  background: transparent;
  border: 2px solid var(--color-data);
  color: var(--color-data);
  padding: 0.15rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* 折叠列表 */
.page-faq__list {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
}

.page-faq__item.card--faq {
  background: var(--color-card);
  border: var(--border-thick) solid var(--color-border);
  box-shadow: var(--shadow-strong);
  padding: 0;
  margin: 0;
  transition: border-color var(--transition);
}
.page-faq__item.card--faq:hover {
  border-color: var(--color-accent);
}

.page-faq__question {
  cursor: pointer;
  padding: var(--faq-item-padding);
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  background: transparent;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background var(--transition);
}
.page-faq__question::-webkit-details-marker {
  display: none;
}
.page-faq__question::before {
  content: '▸';
  display: inline-block;
  margin-right: 0.5rem;
  color: var(--color-accent);
  transition: transform 0.3s ease;
  font-size: 1.25rem;
  line-height: 1;
}
details[open] > .page-faq__question::before {
  transform: rotate(90deg);
}
.page-faq__question:hover {
  background: var(--color-bg);
}

.page-faq__answer {
  padding: 0 var(--faq-item-padding) var(--faq-item-padding);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
}
.page-faq__answer p {
  margin: 0 0 0.5rem;
}
.page-faq__stamp {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0.75rem 0 0;
  border: 2px dashed var(--color-data);
  padding: 0.5rem;
}

/* 联系卡片 */
.page-faq__section--contact {
  background: var(--color-bg);
  border-top: var(--border-thick) solid var(--color-border);
}
.page-faq__contact {
  padding: var(--faq-item-padding);
}
.page-faq__contact-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0;
}
.page-faq__contact-list li {
  padding: 0.25rem 0;
  color: var(--color-text-secondary);
}
.page-faq__contact-list strong {
  color: var(--color-accent);
}
.page-faq .btn--outline {
  background: transparent;
  border: 2px solid var(--color-accent);
  color: var(--color-accent);
  padding: 0.5rem 1.5rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  transition: all var(--transition);
}
.page-faq .btn--outline:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* 信任声明 */
.page-faq__trust {
  text-align: center;
  padding: 1.5rem 1rem;
  background: var(--color-card);
  border-top: 2px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-data);
}

/* 移动端优先（已有基础），桌面增强 */
@media (min-width: 768px) {
  .page-faq__header {
    padding: 3rem 2rem;
  }
  .page-faq__title {
    font-size: 3rem;
  }
  .page-faq__section {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 2.5rem 2rem;
  }
  .page-faq__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--faq-gap);
  }
  .page-faq__contact {
    max-width: 600px;
    margin: 0 auto;
  }
}

@media (min-width: 1024px) {
  .page-faq__title {
    font-size: 3.5rem;
  }
  .page-faq__section {
    padding: 3rem 2rem;
  }
}