/* ===== 页面对应 slug: faq ===== */
.page-faq {
  --faq-bg: var(--color-bg);
  --faq-card-bg: var(--color-bg-card);
  --faq-border: var(--color-border);
  --faq-accent: var(--color-accent-green);
  --faq-highlight: var(--color-accent-orange);
  --faq-text: var(--color-text);
  --faq-text-muted: var(--color-text-muted);
  --faq-font-heading: var(--font-heading);
  --faq-font-body: var(--font-body);
  --faq-font-mono: var(--font-mono);
  --faq-radius: var(--radius-md);
  --faq-shadow: var(--shadow-card);
  --faq-transition: var(--transition);

  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 1rem;
  color: var(--faq-text);
  font-family: var(--faq-font-body);
  background: var(--faq-bg);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--faq-text-muted);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--faq-border);
}
.page-faq .breadcrumb-link {
  color: var(--faq-accent);
  text-decoration: none;
  transition: color 0.2s;
}
.page-faq .breadcrumb-link:hover {
  color: var(--faq-highlight);
}
.page-faq .breadcrumb-sep {
  color: var(--faq-text-muted);
}
.page-faq .breadcrumb-current {
  color: var(--faq-text);
  font-weight: 600;
}

/* 页面头部 & 搜索 */
.page-faq .faq-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  gap: 1rem;
}
.page-faq .faq-title {
  font-family: var(--faq-font-heading);
  font-weight: 900;
  font-size: 2.5rem;
  line-height: 1.1;
  color: var(--faq-text);
  margin: 0;
  display: flex;
  flex-direction: column;
}
.page-faq .faq-subtitle {
  font-size: 1rem;
  font-weight: 400;
  color: var(--faq-text-muted);
  margin-top: 0.25rem;
}
.page-faq .faq-search {
  position: relative;
  width: 100%;
  max-width: 360px;
}
.page-faq .faq-search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  background: var(--faq-card-bg);
  border: 2px solid var(--faq-border);
  border-radius: var(--faq-radius);
  color: var(--faq-text);
  font-family: var(--faq-font-body);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.page-faq .faq-search-input:focus {
  border-color: var(--faq-accent);
}
.page-faq .faq-search-input::placeholder {
  color: var(--faq-text-muted);
  opacity: 0.7;
}
.page-faq .faq-search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--faq-text-muted);
  pointer-events: none;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* 顶部抽象图片 */
.page-faq .faq-hero-img {
  margin-bottom: 2rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--faq-shadow);
}
.page-faq .faq-hero-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  object-position: center;
}

/* 每个 FAQ 段落 */
.page-faq .faq-section {
  margin-bottom: 2.5rem;
}
.page-faq .faq-section-heading {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  font-family: var(--faq-font-heading);
  font-weight: 900;
  font-size: 1.75rem;
  color: var(--faq-text);
  border-bottom: 2px solid var(--faq-border);
  padding-bottom: 0.5rem;
}
.page-faq .section-counter {
  font-family: var(--faq-font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--faq-highlight);
  line-height: 1;
}
.page-faq .section-label {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--faq-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* 步骤示意图（在02段落） */
.page-faq .faq-step-img {
  margin: 1rem 0 1.5rem;
  display: flex;
  justify-content: flex-start;
}
.page-faq .faq-step-image {
  display: block;
  width: 300px;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--faq-shadow);
  object-fit: cover;
}

/* 手风琴容器 */
.page-faq .faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* 单个问题项 */
.page-faq .faq-item {
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-border);
  border-radius: var(--faq-radius);
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.page-faq .faq-item[open] {
  box-shadow: 0 0 0 2px var(--faq-accent);
}

/* 问题标题（summary） */
.page-faq .faq-question {
  display: flex;
  align-items: center;
  padding: 1rem 1.25rem;
  font-family: var(--faq-font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--faq-text);
  cursor: pointer;
  list-style: none;
  position: relative;
  transition: background 0.2s;
}
.page-faq .faq-question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-question::marker {
  display: none;
  content: "";
}
.page-faq .faq-question::before {
  content: "▶";
  display: inline-block;
  margin-right: 0.75rem;
  font-size: 0.75rem;
  color: var(--faq-accent);
  transition: transform 0.2s;
}
.page-faq .faq-item[open] .faq-question::before {
  transform: rotate(90deg);
}
.page-faq .faq-question:hover {
  background: rgba(0, 255, 135, 0.05);
}
.page-faq .faq-question:focus-visible {
  outline: 2px solid var(--faq-accent);
  outline-offset: -2px;
}

/* 答案内容 */
.page-faq .faq-answer {
  padding: 0 1.25rem 1rem 2.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--faq-text);
}
.page-faq .faq-answer p {
  margin: 0 0 0.5rem;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}

/* 内联链接 */
.page-faq .faq-inline-link {
  color: var(--faq-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}
.page-faq .faq-inline-link:hover {
  color: var(--faq-highlight);
}

/* 底部联系引导 */
.page-faq .faq-cta {
  margin-top: 2rem;
  padding: 1.5rem;
  border: 1px dashed var(--faq-border);
  border-radius: var(--faq-radius);
  text-align: center;
  font-size: 1rem;
  color: var(--faq-text-muted);
}
.page-faq .faq-cta p {
  margin: 0;
}

/* 移动端优先适配：窄屏 */
@media (max-width: 767px) {
  .page-faq {
    padding: 1rem 0.75rem;
  }
  .page-faq .faq-header {
    flex-direction: column;
    align-items: stretch;
  }
  .page-faq .faq-title {
    font-size: 1.75rem;
  }
  .page-faq .faq-subtitle {
    font-size: 0.9rem;
  }
  .page-faq .faq-search {
    max-width: 100%;
  }
  .page-faq .faq-section-heading {
    font-size: 1.25rem;
    flex-wrap: wrap;
  }
  .page-faq .section-counter {
    font-size: 1.8rem;
  }
  .page-faq .section-label {
    font-size: 1.15rem;
  }
  .page-faq .faq-question {
    font-size: 0.95rem;
    padding: 0.75rem 1rem;
  }
  .page-faq .faq-answer {
    padding: 0 1rem 0.75rem 2rem;
    font-size: 0.9rem;
  }
  .page-faq .faq-hero-img {
    margin-bottom: 1.5rem;
  }
  .page-faq .faq-step-image {
    width: 100%;
    max-width: 300px;
    height: auto;
  }
}

/* 桌面端微调 */
@media (min-width: 768px) {
  .page-faq .faq-search {
    max-width: 320px;
  }
  .page-faq .faq-accordion {
    gap: 1rem;
  }
  .page-faq .faq-item {
    border-radius: var(--radius-md);
  }
}