/* ===== 页面专属样式: .page-faq ===== */
.page-faq {
  --faq-gap: 2rem;
  --faq-radius: 16px;
  --faq-index-width: 280px;
  --faq-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: block;
  width: 100%;
  max-width: var(--max-width, 1440px);
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
  color: var(--white, #FFFFFF);
  font-family: var(--font-body, 'Noto Serif SC', serif);
  line-height: 1.6;
}

/* ---- 页面头部 ---- */
.page-faq .faq-page-header {
  padding: 2rem 0 1.5rem;
  border-bottom: 1px solid rgba(255, 107, 53, 0.2);
  margin-bottom: 2rem;
}

.page-faq .breadcrumb {
  margin-bottom: 1rem;
  font-size: 0.875rem;
  font-family: var(--font-data, 'JetBrains Mono', monospace);
  color: var(--gray, #8A8D93);
}

.page-faq .breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-faq .breadcrumb li::after {
  content: "/";
  color: var(--gray, #8A8D93);
  opacity: 0.5;
}

.page-faq .breadcrumb li:last-child::after {
  display: none;
}

.page-faq .breadcrumb a {
  color: var(--accent, #FF6B35);
  text-decoration: none;
  transition: color var(--faq-transition);
}

.page-faq .breadcrumb a:hover {
  color: var(--white, #FFFFFF);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--gray-light, #b0b3b9);
  font-weight: 400;
}

.page-faq .faq-page-title {
  font-family: var(--font-head, 'Poppins', sans-serif);
  font-weight: 700;
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  line-height: 1.1;
  color: var(--white, #FFFFFF);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.page-faq .faq-page-desc {
  font-size: 1.05rem;
  color: var(--gray, #8A8D93);
  max-width: 640px;
  margin: 0.5rem 0 0;
  font-family: var(--font-body, 'Noto Serif SC', serif);
  line-height: 1.7;
}

/* ---- 主体布局 ---- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

/* ---- 左侧索引 ---- */
.page-faq .faq-index {
  order: 1;
}

.page-faq .faq-index-inner {
  background: var(--primary-light, #1A2A3A);
  border-radius: var(--faq-radius);
  padding: 1.5rem;
  position: sticky;
  top: calc(var(--header-h, 72px) + 1.5rem);
  border: 1px solid rgba(255, 107, 53, 0.1);
  max-height: calc(100vh - var(--header-h, 72px) - 3rem);
  overflow-y: auto;
}

.page-faq .faq-index-heading {
  font-family: var(--font-head, 'Poppins', sans-serif);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--accent, #FF6B35);
  margin: 0 0 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid rgba(255, 107, 53, 0.2);
}

.page-faq .faq-index-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-faq .faq-index-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.page-faq .faq-index-group-title {
  font-family: var(--font-head, 'Poppins', sans-serif);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray, #8A8D93);
  padding-bottom: 0.2rem;
  border-bottom: 1px solid rgba(138, 141, 147, 0.2);
}

.page-faq .faq-index-sublist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.page-faq .faq-index-sublist li {
  margin: 0;
}

.page-faq .faq-index-link {
  display: block;
  padding: 0.4rem 0.6rem;
  font-size: 0.875rem;
  font-family: var(--font-body, 'Noto Serif SC', serif);
  color: var(--gray-light, #b0b3b9);
  text-decoration: none;
  border-radius: 6px;
  transition: all var(--faq-transition);
  border-left: 2px solid transparent;
  line-height: 1.4;
}

.page-faq .faq-index-link:hover {
  color: var(--white, #FFFFFF);
  background: rgba(255, 107, 53, 0.08);
  border-left-color: var(--accent, #FF6B35);
  font-weight: 600;
  padding-left: 0.9rem;
}

.page-faq .faq-index-cta {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(138, 141, 147, 0.2);
  font-size: 0.875rem;
  color: var(--gray, #8A8D93);
}

.page-faq .faq-contact-link {
  color: var(--accent, #FF6B35);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--faq-transition);
}

.page-faq .faq-contact-link:hover {
  color: var(--white, #FFFFFF);
  text-decoration: underline;
}

/* ---- 右侧手风琴 ---- */
.page-faq .faq-accordion {
  order: 2;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* 分类区域 */
.page-faq .faq-section {
  background: var(--primary-light, #1A2A3A);
  border-radius: var(--faq-radius);
  padding: 1.5rem;
  border: 1px solid rgba(255, 107, 53, 0.06);
  transition: border-color var(--faq-transition);
}

.page-faq .faq-section:target {
  border-color: var(--accent, #FF6B35);
  box-shadow: 0 0 0 2px rgba(255, 107, 53, 0.15);
}

.page-faq .faq-section-heading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-head, 'Poppins', sans-serif);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--white, #FFFFFF);
  margin: 0 0 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255, 107, 53, 0.15);
}

.page-faq .faq-section-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--accent-soft, rgba(255, 107, 53, 0.15));
  color: var(--accent, #FF6B35);
  flex-shrink: 0;
}

.page-faq .faq-section-icon svg {
  width: 1.1rem;
  height: 1.1rem;
}

.page-faq .faq-section-items {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* 手风琴项 details/summary */
.page-faq .faq-item {
  background: var(--card-bg, #2C3E50);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(138, 141, 147, 0.12);
  transition: border-color var(--faq-transition), box-shadow var(--faq-transition);
}

.page-faq .faq-item:hover {
  border-color: rgba(255, 107, 53, 0.25);
}

.page-faq .faq-item[open] {
  border-color: rgba(255, 107, 53, 0.3);
  box-shadow: 0 4px 20px rgba(255, 107, 53, 0.06);
}

.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  font-family: var(--font-head, 'Poppins', sans-serif);
  font-weight: 600;
  font-size: 1rem;
  color: var(--white, #FFFFFF);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: all var(--faq-transition);
  position: relative;
}

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

.page-faq .faq-question::marker {
  display: none;
  content: "";
}

/* 自定义展开/折叠图标 */
.page-faq .faq-question::after {
  content: "";
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  margin-left: auto;
  flex-shrink: 0;
  background: var(--accent, #FF6B35);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23FF6B35' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E");
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23FF6B35' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E");
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  transition: transform var(--faq-transition);
}

.page-faq .faq-item[open] .faq-question::after {
  transform: rotate(45deg);
  background: var(--gray, #8A8D93);
}

.page-faq .faq-question:hover {
  background: rgba(255, 107, 53, 0.04);
  font-weight: 700;
  padding-left: 1.5rem;
}

.page-faq .faq-item[open] .faq-question {
  border-bottom: 1px solid rgba(255, 107, 53, 0.1);
  color: var(--accent, #FF6B35);
  font-weight: 700;
}

/* 答案区域 */
.page-faq .faq-answer {
  padding: 1.25rem;
  background: var(--accent-soft, rgba(255, 107, 53, 0.08));
  border-top: 1px solid rgba(255, 107, 53, 0.06);
  font-family: var(--font-body, 'Noto Serif SC', serif);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--gray-light, #b0b3b9);
}

.page-faq .faq-answer p {
  margin: 0 0 0.75rem;
}

.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-answer strong {
  color: var(--white, #FFFFFF);
  font-weight: 600;
}

.page-faq .faq-answer-list {
  margin: 0.5rem 0 0.75rem;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.page-faq .faq-answer-list li {
  list-style: disc;
  color: var(--gray-light, #b0b3b9);
}

.page-faq .faq-answer-list li::marker {
  color: var(--accent, #FF6B35);
}

.page-faq .faq-inline-code {
  font-family: var(--font-data, 'JetBrains Mono', monospace);
  font-size: 0.85em;
  padding: 0.15em 0.4em;
  background: rgba(255, 107, 53, 0.1);
  border-radius: 4px;
  color: var(--accent, #FF6B35);
}

.page-faq .faq-inline-link {
  color: var(--accent, #FF6B35);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--faq-transition);
}

.page-faq .faq-inline-link:hover {
  color: var(--white, #FFFFFF);
  text-decoration: underline;
}

/* ---- 图片 ---- */
.page-faq .faq-figure {
  margin: 1rem 0 0.5rem;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.2);
}

.page-faq .faq-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 12px 12px 0 0;
}

.page-faq .faq-figcap {
  padding: 0.6rem 1rem;
  font-size: 0.8rem;
  font-family: var(--font-data, 'JetBrains Mono', monospace);
  color: var(--gray, #8A8D93);
  text-align: center;
  background: rgba(0, 0, 0, 0.15);
}

/* ---- 联系提示 ---- */
.page-faq .faq-contact-note {
  margin-top: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--accent-soft, rgba(255, 107, 53, 0.08));
  border-radius: var(--faq-radius);
  border: 1px solid rgba(255, 107, 53, 0.12);
  text-align: center;
  font-size: 0.95rem;
  color: var(--gray-light, #b0b3b9);
}

.page-faq .faq-contact-note p {
  margin: 0;
}

.page-faq .faq-contact-note strong {
  color: var(--white, #FFFFFF);
  font-family: var(--font-data, 'JetBrains Mono', monospace);
  font-weight: 400;
}

/* ===== 响应式: 桌面端 >= 768px ===== */
@media (min-width: 768px) {
  .page-faq {
    padding: 0 2rem 4rem;
  }

  .page-faq .faq-page-header {
    padding: 2.5rem 0 2rem;
    margin-bottom: 2.5rem;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-width) 1fr;
    gap: 2.5rem;
    align-items: start;
  }

  .page-faq .faq-index {
    order: 0;
    position: relative;
  }

  .page-faq .faq-index-inner {
    padding: 1.75rem;
  }

  .page-faq .faq-accordion {
    gap: 2rem;
  }

  .page-faq .faq-section {
    padding: 2rem;
  }

  .page-faq .faq-section-heading {
    font-size: 1.4rem;
  }

  .page-faq .faq-question {
    padding: 1.1rem 1.5rem;
    font-size: 1.05rem;
  }

  .page-faq .faq-answer {
    padding: 1.5rem;
    font-size: 1rem;
  }

  .page-faq .faq-figcap {
    font-size: 0.8125rem;
  }
}

/* ===== 大桌面端 >= 1024px ===== */
@media (min-width: 1024px) {
  .page-faq {
    padding: 0 2.5rem 5rem;
  }

  .page-faq .faq-layout {
    grid-template-columns: 300px 1fr;
    gap: 3rem;
  }

  .page-faq .faq-index-width {
    --faq-index-width: 300px;
  }
}

/* ===== 窄屏微调 < 480px ===== */
@media (max-width: 479px) {
  .page-faq {
    padding: 0 0.75rem 2rem;
  }

  .page-faq .faq-page-title {
    font-size: 1.8rem;
  }

  .page-faq .faq-page-desc {
    font-size: 0.95rem;
  }

  .page-faq .faq-section {
    padding: 1rem;
  }

  .page-faq .faq-question {
    padding: 0.85rem 1rem;
    font-size: 0.9rem;
  }

  .page-faq .faq-answer {
    padding: 1rem;
    font-size: 0.88rem;
  }

  .page-faq .faq-index-inner {
    padding: 1rem;
  }

  .page-faq .faq-index-link {
    font-size: 0.8rem;
    padding: 0.3rem 0.5rem;
  }

  .page-faq .faq-contact-note {
    padding: 1rem;
    font-size: 0.85rem;
  }
}