/* ===== 页面专属：.page-faq ===== */
.page-faq {
  --faq-max-width: 860px;
  --faq-card-bg: #1A2A4A;
  --faq-card-radius: 14px;
  --faq-border-color: rgba(197, 165, 90, 0.25);
  --faq-arrow-size: 1.25rem;
  --faq-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --faq-gap: 1.5rem;

  display: block;
  width: 100%;
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
  background-color: var(--clr-primary, #0A1F44);
  color: var(--clr-text-light, #FFFFFF);
  font-family: var(--font-body, 'Segoe UI', Roboto, sans-serif);
  font-size: var(--fs-body, 1rem);
  line-height: 1.7;
  min-height: 70vh;
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.65rem;
  font-size: var(--fs-small, 0.875rem);
  color: var(--clr-secondary2, #C5A55A);
  margin-bottom: 1.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--faq-border-color);
}
.page-faq .breadcrumb a {
  color: var(--clr-secondary1, #4A90D9);
  text-decoration: none;
  transition: color var(--faq-transition);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--clr-accent, #FF6F00);
  text-decoration: underline;
}
.page-faq .breadcrumb-sep {
  color: var(--clr-secondary2, #C5A55A);
  opacity: 0.5;
  user-select: none;
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--clr-text-light, #FFFFFF);
  font-weight: 600;
}

/* 页面标题区 */
.page-faq .page-header {
  margin-bottom: 2.5rem;
}
.page-faq .page-title {
  font-family: var(--font-heading, Impact, 'Arial Black', sans-serif);
  font-size: 2.25rem;
  font-weight: 900;
  line-height: 1.15;
  color: var(--clr-text-light, #FFFFFF);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  position: relative;
  display: inline-block;
}
.page-faq .page-title::after {
  content: '';
  display: block;
  width: 60%;
  height: 4px;
  margin-top: 0.25rem;
  background: linear-gradient(90deg, var(--clr-accent, #FF6F00), var(--clr-secondary2, #C5A55A));
  border-radius: 2px;
}
.page-faq .page-desc {
  font-size: var(--fs-body, 1rem);
  color: var(--clr-neutral3, #EAEAEA);
  max-width: 600px;
  margin: 0.75rem 0 0;
  line-height: 1.6;
  opacity: 0.9;
}

/* 分类卡片 */
.page-faq .faq-category {
  background-color: var(--faq-card-bg);
  border-radius: var(--faq-card-radius);
  padding: 1.5rem 1.25rem;
  margin-bottom: var(--faq-gap);
  border: 1px solid var(--faq-border-color);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
  transition: border-color var(--faq-transition);
}
.page-faq .faq-category:hover {
  border-color: rgba(197, 165, 90, 0.45);
}

/* 分类标题 */
.page-faq .category-title {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-heading, Impact, 'Arial Black', sans-serif);
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 0 0.25rem;
  color: var(--clr-text-light, #FFFFFF);
  line-height: 1.2;
}
.page-faq .category-icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 8px;
  background-color: rgba(255, 111, 0, 0.08);
  padding: 4px;
  transition: transform var(--faq-transition);
}
.page-faq .category-title:hover .category-icon {
  transform: scale(1.05);
}
.page-faq .category-label {
  background: linear-gradient(135deg, var(--clr-accent, #FF6F00) 0%, var(--clr-secondary2, #C5A55A) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-faq .category-brief {
  font-size: var(--fs-small, 0.875rem);
  color: var(--clr-neutral3, #EAEAEA);
  margin: 0.25rem 0 1.25rem 0;
  padding-left: calc(48px + 1rem);
  opacity: 0.85;
  line-height: 1.5;
}

/* 手风琴项 —— details/summary */
.page-faq .faq-item {
  border-bottom: 1px solid rgba(197, 165, 90, 0.15);
  transition: border-color var(--faq-transition);
}
.page-faq .faq-item:last-of-type {
  border-bottom: none;
}
.page-faq .faq-item[open] {
  border-bottom-color: rgba(255, 111, 0, 0.25);
}

/* 问题行 (summary) */
.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
  padding: 1rem 0.5rem 1rem 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--clr-text-light, #FFFFFF);
  line-height: 1.4;
  list-style: none;
  position: relative;
  transition: color var(--faq-transition), padding-left var(--faq-transition);
}
.page-faq .faq-question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-question::-moz-list-bullet {
  list-style: none;
}
.page-faq .faq-question::marker {
  display: none;
  content: '';
}

/* 自定义箭头 */
.page-faq .faq-question::after {
  content: '';
  display: inline-flex;
  width: var(--faq-arrow-size);
  height: var(--faq-arrow-size);
  margin-left: auto;
  flex-shrink: 0;
  background-color: currentColor;
  mask-image: 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='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  mask-size: contain;
  mask-repeat: no-repeat;
  -webkit-mask-image: 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='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  transition: transform var(--faq-transition), color var(--faq-transition);
  color: var(--clr-secondary2, #C5A55A);
}
.page-faq .faq-item[open] .faq-question::after {
  transform: rotate(180deg);
  color: var(--clr-accent, #FF6F00);
}

/* 悬停高亮 */
.page-faq .faq-item:hover .faq-question {
  color: var(--clr-accent, #FF6F00);
  padding-left: 0.35rem;
}
.page-faq .faq-item:hover .faq-question::after {
  color: var(--clr-accent, #FF6F00);
}

/* 答案内容 */
.page-faq .faq-answer {
  padding: 0 0.5rem 1.25rem 0;
  font-size: var(--fs-body, 1rem);
  color: var(--clr-neutral3, #EAEAEA);
  line-height: 1.7;
  max-width: 640px;
}
.page-faq .faq-answer p {
  margin: 0 0 0.75rem;
}
.page-faq .faq-answer a {
  color: var(--clr-secondary1, #4A90D9);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--faq-transition);
}
.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  color: var(--clr-accent, #FF6F00);
  text-decoration-thickness: 2px;
}

/* 同步步骤图 */
.page-faq .sync-figure {
  margin: 1.25rem 0 0.25rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}
.page-faq .sync-diagram {
  width: 100%;
  max-width: 400px;
  height: auto;
  aspect-ratio: 400 / 200;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid rgba(74, 144, 217, 0.25);
  background-color: #0F2440;
  transition: border-color var(--faq-transition);
}
.page-faq .sync-diagram:hover {
  border-color: rgba(74, 144, 217, 0.6);
}
.page-faq .sync-caption {
  font-size: var(--fs-small, 0.875rem);
  color: var(--clr-secondary2, #C5A55A);
  font-style: italic;
  opacity: 0.8;
}

/* 分类色彩点缀：每个分类不同强调色 */
.page-faq #getting-started .category-label {
  background: linear-gradient(135deg, var(--clr-accent, #FF6F00) 0%, #ff8c38 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-faq #data-sync .category-label {
  background: linear-gradient(135deg, var(--clr-secondary1, #4A90D9) 0%, #6aade0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-faq #account-security .category-label {
  background: linear-gradient(135deg, var(--clr-secondary2, #C5A55A) 0%, #d9c07a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== 响应式 ===== */
/* 默认移动端已设计，min-width: 640px 起增强 */
@media (min-width: 640px) {
  .page-faq {
    padding: 1.75rem 1.5rem 4rem;
  }
  .page-faq .page-title {
    font-size: 2.75rem;
  }
  .page-faq .faq-category {
    padding: 1.75rem 1.75rem;
  }
  .page-faq .category-title {
    font-size: 1.65rem;
  }
  .page-faq .category-icon {
    width: 56px;
    height: 56px;
  }
  .page-faq .category-brief {
    padding-left: calc(56px + 1rem);
  }
  .page-faq .faq-question {
    font-size: 1.1rem;
    padding: 1.1rem 0.75rem 1.1rem 0;
  }
  .page-faq .faq-answer {
    padding: 0 0.75rem 1.5rem 0;
  }
}

@media (min-width: 860px) {
  .page-faq {
    padding: 2rem 2rem 5rem;
  }
  .page-faq .page-header {
    margin-bottom: 3rem;
  }
  .page-faq .page-title {
    font-size: 3.25rem;
  }
  .page-faq .page-desc {
    font-size: 1.1rem;
  }
  .page-faq .faq-category {
    padding: 2rem 2.25rem;
    margin-bottom: 1.75rem;
    border-radius: 16px;
  }
  .page-faq .category-title {
    font-size: 1.8rem;
  }
  .page-faq .category-icon {
    width: 64px;
    height: 64px;
  }
  .page-faq .category-brief {
    padding-left: calc(64px + 1rem);
    font-size: var(--fs-body, 1rem);
  }
  .page-faq .faq-question {
    font-size: 1.15rem;
    padding: 1.2rem 1rem 1.2rem 0;
  }
  .page-faq .faq-answer {
    font-size: 1.05rem;
    padding: 0 1rem 1.75rem 0;
  }
}

@media (min-width: 1024px) {
  .page-faq {
    padding: 2.5rem 2.5rem 5rem;
  }
  .page-faq .faq-category {
    padding: 2.25rem 2.75rem;
  }
}