/* ===== 页面 faq 专属样式 ===== */
.page-faq {
  --faq-accent-line: var(--color-accent);
  --faq-card-shadow: 0 2px 12px rgba(11, 29, 58, 0.08);
  --faq-card-shadow-hover: 0 6px 24px rgba(11, 29, 58, 0.15);
  --faq-category-gap: 2.5rem;
  --faq-sidebar-width: 300px;
  --faq-radius: 6px;
  --faq-toggle-size: 24px;
  background: var(--color-bg);
}

/* ---------- Hero 区域 ---------- */
.page-faq .faq-hero {
  position: relative;
  background: var(--gradient-header);
  padding: 2rem 0 3rem;
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -80px;
  width: 300px;
  height: 300px;
  background: rgba(255, 107, 53, 0.10);
  border-radius: 50%;
  transform: skewX(-12deg);
  pointer-events: none;
}
.page-faq .faq-hero-speedline {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--color-accent);
  clip-path: polygon(0 0, 100% 0, 98% 100%, 2% 100%);
}
.page-faq .breadcrumb {
  margin-bottom: 1.25rem;
}
.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.8rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.65);
}
.page-faq .breadcrumb a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--color-accent);
  outline: none;
}
.page-faq .breadcrumb a[aria-current="page"] {
  color: var(--color-accent);
  font-weight: 600;
}
.page-faq .breadcrumb ol li:not(:last-child)::after {
  content: '/';
  margin-left: 0.4rem;
  color: rgba(255, 255, 255, 0.35);
}
.page-faq .faq-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-white);
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
}
.page-faq .faq-hero-subtitle {
  font-family: var(--font-body);
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.75);
  margin: 0 0 1.5rem;
  max-width: 520px;
}
.page-faq .faq-search {
  position: relative;
  max-width: 600px;
}
.page-faq .faq-search-input {
  display: block;
  width: 100%;
  padding: 0.85rem 1.2rem 0.85rem 3rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--faq-radius);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}
.page-faq .faq-search-input::placeholder {
  color: var(--color-silver);
  opacity: 0.8;
}
.page-faq .faq-search-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.18);
}
.page-faq .faq-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-silver);
  border-radius: 50%;
  pointer-events: none;
  transition: border-color var(--transition-fast);
}
.page-faq .faq-search-icon::after {
  content: '';
  position: absolute;
  bottom: -5px;
  right: -6px;
  width: 8px;
  height: 2px;
  background: var(--color-silver);
  transform: rotate(45deg);
  border-radius: 1px;
  transition: background var(--transition-fast);
}
.page-faq .faq-search-input:focus ~ .faq-search-icon,
.page-faq .faq-search-input:focus ~ .faq-search-icon::after {
  border-color: var(--color-accent);
  background: transparent;
}
.page-faq .faq-search-input:focus ~ .faq-search-icon::after {
  background: var(--color-accent);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-top: 2rem;
  padding-bottom: 2.5rem;
}

/* ---------- 侧边栏 ---------- */
.page-faq .faq-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.page-faq .faq-sidebar-img,
.page-faq .faq-sidebar-img-secondary {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-white);
  box-shadow: var(--faq-card-shadow);
}
.page-faq .faq-sidebar-image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-categories {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem;
  box-shadow: var(--faq-card-shadow);
  position: relative;
  overflow: hidden;
}
.page-faq .faq-categories::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-accent);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}
.page-faq .faq-categories-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 1rem 0;
  letter-spacing: 0.02em;
}
.page-faq .faq-categories-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.page-faq .faq-cat-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.8rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  background: transparent;
  border-radius: var(--faq-radius);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  position: relative;
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 50%, calc(100% - 6px) 100%, 0 100%);
}
.page-faq .faq-cat-link:hover,
.page-faq .faq-cat-link:focus-visible {
  background: rgba(255, 107, 53, 0.08);
  color: var(--color-accent);
  transform: translateX(4px);
  outline: none;
}
.page-faq .faq-cat-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.page-faq .faq-cat-indicator {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  background: var(--color-silver);
  border-radius: 50%;
  transition: background var(--transition-fast);
}
.page-faq .faq-cat-link:hover .faq-cat-indicator,
.page-faq .faq-cat-link:focus-visible .faq-cat-indicator {
  background: var(--color-accent);
}

/* ---------- 问题列表 ---------- */
.page-faq .faq-questions {
  flex: 1;
  min-width: 0;
}
.page-faq .faq-category {
  scroll-margin-top: 5rem;
  margin-bottom: var(--faq-category-gap);
}
.page-faq .faq-category:last-child {
  margin-bottom: 0;
}
.page-faq .faq-category-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 1rem 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-silver);
}
.page-faq .faq-category-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--faq-radius);
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 85% 100%, 0 100%);
  flex-shrink: 0;
}

/* ---------- 单个问题 ---------- */
.page-faq .faq-items {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-faq .faq-item {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--faq-card-shadow);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
  position: relative;
}
.page-faq .faq-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-accent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.page-faq .faq-item[open]::before,
.page-faq .faq-item:hover::before {
  opacity: 1;
}
.page-faq .faq-item:hover {
  box-shadow: var(--faq-card-shadow-hover);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  -webkit-user-select: none;
  user-select: none;
  transition: background var(--transition-fast);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:hover {
  background: rgba(255, 107, 53, 0.04);
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
  border-radius: var(--radius-md);
}
.page-faq .faq-number {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(255, 107, 53, 0.10);
  padding: 0.2rem 0.5rem;
  border-radius: var(--faq-radius);
  letter-spacing: 0.03em;
  line-height: 1.4;
}
.page-faq .faq-question-text {
  flex: 1;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}
.page-faq .faq-toggle {
  flex-shrink: 0;
  width: var(--faq-toggle-size);
  height: var(--faq-toggle-size);
  position: relative;
  transition: transform var(--transition-base);
}
.page-faq .faq-toggle::before,
.page-faq .faq-toggle::after {
  content: '';
  position: absolute;
  background: var(--color-silver);
  border-radius: 1px;
  transition: background var(--transition-fast), transform var(--transition-base);
}
.page-faq .faq-toggle::before {
  top: 50%;
  left: 4px;
  right: 4px;
  height: 2px;
  transform: translateY(-50%);
}
.page-faq .faq-toggle::after {
  left: 50%;
  top: 4px;
  bottom: 4px;
  width: 2px;
  transform: translateX(-50%);
}
.page-faq .faq-item[open] .faq-toggle {
  transform: rotate(45deg);
}
.page-faq .faq-item[open] .faq-toggle::before,
.page-faq .faq-item[open] .faq-toggle::after {
  background: var(--color-accent);
}

/* ---------- 答案 ---------- */
.page-faq .faq-answer {
  padding: 0 1.25rem 1rem;
  border-top: 1px solid rgba(192, 192, 192, 0.30);
  margin: 0 0 0 0;
}
.page-faq .faq-answer p {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-text);
  margin: 0.75rem 0 0;
  max-width: 640px;
}

/* ---------- 联系方式区域 ---------- */
.page-faq .faq-contact {
  position: relative;
  background: var(--gradient-footer);
  padding: 2.5rem 0 3rem;
  overflow: hidden;
}
.page-faq .faq-contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: var(--color-accent);
  clip-path: polygon(2% 0, 98% 0, 100% 100%, 0 100%);
}
.page-faq .faq-contact-speedline {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--color-accent) 0px, var(--color-accent) 20px, transparent 20px, transparent 40px);
  opacity: 0.35;
}
.page-faq .faq-contact-inner {
  position: relative;
  z-index: 1;
}
.page-faq .faq-contact-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-white);
  margin: 0 0 0.3rem;
}
.page-faq .faq-contact-desc {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.7);
  margin: 0 0 1.25rem;
}
.page-faq .faq-contact-list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.page-faq .faq-contact-list li {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}
.page-faq .faq-contact-label {
  font-weight: 600;
  color: var(--color-silver);
  flex-shrink: 0;
}
.page-faq .faq-contact-link {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-faq .faq-contact-link:hover,
.page-faq .faq-contact-link:focus-visible {
  color: var(--color-white);
  outline: none;
  text-decoration: underline;
}
.page-faq .faq-contact-text {
  color: rgba(255, 255, 255, 0.85);
}
.page-faq .faq-contact-note {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 1.25rem;
  max-width: 480px;
  font-style: italic;
}
.page-faq .faq-contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* ---------- 响应式：平板及以上 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 2.5rem 0 3.5rem;
  }
  .page-faq .faq-body {
    flex-direction: row;
    align-items: flex-start;
    gap: 2.5rem;
    padding-top: 2.5rem;
    padding-bottom: 3rem;
  }
  .page-faq .faq-sidebar {
    position: sticky;
    top: calc(var(--header-height) + 1.5rem);
    width: var(--faq-sidebar-width);
    flex-shrink: 0;
  }
  .page-faq .faq-questions {
    flex: 1;
  }
  .page-faq .faq-category-title {
    font-size: 1.5rem;
  }
  .page-faq .faq-question-text {
    font-size: 1rem;
  }
  .page-faq .faq-contact {
    padding: 3rem 0 3.5rem;
  }
  .page-faq .faq-contact-title {
    font-size: 1.8rem;
  }
  .page-faq .faq-contact-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem 2rem;
  }
}

/* ---------- 响应式：大屏桌面 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-sidebar {
    width: 320px;
  }
  .page-faq .faq-category {
    margin-bottom: 3rem;
  }
  .page-faq .faq-answer p {
    font-size: 0.9375rem;
  }
}