/* ===== 页面专属：.page-faq 问答中心 ===== */
.page-faq {
  --faq-bg: #F9F7F4;
  --faq-card-bg: #FFFFFF;
  --faq-answer-bg: #F4F1EE;
  --faq-border: #E0DCD7;
  --faq-hot-bg: rgba(255, 215, 0, 0.15);
  --faq-hot-border: #FFD700;
  --faq-line: #D32F2F;
  --faq-icon-size: 40px;
  --faq-radius: 6px;
  --faq-shadow: 0 2px 12px rgba(13, 27, 42, 0.06), 0 1px 3px rgba(13, 27, 42, 0.03);
  --faq-shadow-hover: 0 4px 24px rgba(13, 27, 42, 0.10), 0 2px 6px rgba(13, 27, 42, 0.04);

  display: block;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: var(--space-md) var(--space-md) var(--space-2xl);
  background: var(--faq-bg);
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  color: var(--color-text-dark, #1A3E6B);
}

/* —— 面包屑 —— */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--fs-small, 0.85rem);
  color: var(--color-neutral1, #8B8682);
  margin-bottom: var(--space-lg);
  padding: 0;
  list-style: none;
}
.page-faq .breadcrumb a {
  color: var(--color-primary, #1A3E6B);
  text-decoration: none;
  transition: color var(--transition-fast, 0.2s);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--color-accent1, #D32F2F);
  text-decoration: underline;
}
.page-faq .breadcrumb .sep {
  user-select: none;
  color: var(--color-neutral1, #8B8682);
}

/* —— Hero —— */
.page-faq .faq-hero {
  position: relative;
  margin-bottom: var(--space-xl);
  border-radius: var(--radius-md, 4px);
  overflow: hidden;
  background: var(--color-bg-dark, #0D1B2A);
  aspect-ratio: 1200 / 300;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-faq .faq-hero-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}
.page-faq .faq-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13, 27, 42, 0.75) 0%, rgba(13, 27, 42, 0.35) 100%);
  pointer-events: none;
}
.page-faq .faq-hero-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  text-align: center;
  color: var(--color-text-light, #F5F5F5);
  pointer-events: none;
}
.page-faq .faq-title {
  font-family: var(--font-heading, Inter, sans-serif);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: var(--fw-heading, 700);
  font-style: italic;
  letter-spacing: var(--ls-heading, -0.5px);
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  margin: 0 0 var(--space-xs);
}
.page-faq .faq-subtitle {
  font-size: clamp(0.95rem, 1.5vw, 1.15rem);
  opacity: 0.92;
  max-width: 600px;
  margin: 0;
  line-height: 1.6;
}

/* —— 搜索框 —— */
.page-faq .faq-search-wrap {
  position: relative;
  margin-bottom: var(--space-xl);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
.page-faq .faq-search-input {
  display: block;
  width: 100%;
  padding: 0.9rem 1.2rem 0.9rem 3rem;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: var(--fs-body, 1rem);
  color: var(--color-text-dark, #1A3E6B);
  background: var(--faq-card-bg, #FFFFFF);
  border: 2px solid var(--faq-border, #E0DCD7);
  border-radius: var(--faq-radius, 6px);
  box-shadow: var(--faq-shadow);
  transition: border-color var(--transition-fast, 0.2s), box-shadow var(--transition-fast, 0.2s);
  appearance: none;
  -webkit-appearance: none;
}
.page-faq .faq-search-input:focus {
  outline: none;
  border-color: var(--color-primary, #1A3E6B);
  box-shadow: 0 0 0 3px rgba(26, 62, 107, 0.15), var(--faq-shadow);
}
.page-faq .faq-search-input::placeholder {
  color: var(--color-neutral1, #8B8682);
  opacity: 0.7;
}
.page-faq .faq-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-neutral1, #8B8682);
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-faq .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* —— 问题列表容器 —— */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

/* —— 分类 —— */
.page-faq .faq-category {
  background: var(--faq-card-bg, #FFFFFF);
  border-radius: var(--faq-radius, 6px);
  box-shadow: var(--faq-shadow);
  padding: var(--space-md) var(--space-md) var(--space-sm);
  transition: box-shadow var(--transition-med, 0.35s);
}
.page-faq .faq-category:hover {
  box-shadow: var(--faq-shadow-hover);
}

.page-faq .category-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--faq-line, #D32F2F);
  flex-wrap: wrap;
}
.page-faq .section-number {
  font-family: var(--font-accent, Oswald, sans-serif);
  font-size: var(--fs-heading-md, 1.5rem);
  font-weight: var(--fw-bold, 600);
  color: var(--color-accent1, #D32F2F);
  letter-spacing: 0.02em;
  line-height: 1;
  flex-shrink: 0;
}
.page-faq .category-icon {
  width: var(--faq-icon-size, 40px);
  height: var(--faq-icon-size, 40px);
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--faq-border, #E0DCD7);
  background: var(--faq-bg, #F9F7F4);
}
.page-faq .category-title {
  font-family: var(--font-heading, Inter, sans-serif);
  font-size: var(--fs-heading-md, 1.5rem);
  font-weight: var(--fw-heading, 700);
  font-style: italic;
  letter-spacing: var(--ls-heading, -0.5px);
  color: var(--color-primary, #1A3E6B);
  margin: 0;
  flex: 1;
  min-width: 120px;
}
.page-faq .category-line {
  flex: 0 0 40px;
  height: 3px;
  background: var(--faq-line, #D32F2F);
  border-radius: 2px;
  display: block;
}

/* —— 折叠项 —— */
.page-faq .category-questions {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.page-faq .faq-item {
  border: 1px solid var(--faq-border, #E0DCD7);
  border-radius: var(--radius-sm, 2px);
  background: var(--faq-bg, #F9F7F4);
  transition: border-color var(--transition-fast, 0.2s), background var(--transition-fast, 0.2s);
  overflow: hidden;
}
.page-faq .faq-item[open] {
  background: var(--faq-card-bg, #FFFFFF);
  border-color: var(--color-primary, #1A3E6B);
}
.page-faq .faq-item--hot {
  border-left: 4px solid var(--faq-hot-border, #FFD700);
  background: var(--faq-hot-bg);
}
.page-faq .faq-item--hot[open] {
  border-left-color: var(--faq-hot-border, #FFD700);
  background: var(--faq-card-bg, #FFFFFF);
}

.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: var(--fs-body, 1rem);
  font-weight: var(--fw-bold, 600);
  color: var(--color-text-dark, #1A3E6B);
  line-height: 1.5;
  user-select: none;
  transition: background var(--transition-fast, 0.2s);
}
.page-faq .faq-question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-question::marker {
  display: none;
  content: "";
}
.page-faq .faq-question:hover,
.page-faq .faq-question:focus-visible {
  background: rgba(26, 62, 107, 0.04);
}
.page-faq .faq-question .q-text {
  flex: 1;
}
.page-faq .faq-question .tag {
  font-family: var(--font-accent, Oswald, sans-serif);
  font-size: 0.7rem;
  font-weight: var(--fw-bold, 600);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--faq-hot-border, #FFD700);
  color: var(--color-text-dark, #1A3E6B);
  line-height: 1.4;
  flex-shrink: 0;
}
.page-faq .faq-question .faq-toggle {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-med, 0.35s);
}
.page-faq .faq-question .faq-toggle::before,
.page-faq .faq-question .faq-toggle::after {
  content: '';
  position: absolute;
  background: var(--color-primary, #1A3E6B);
  border-radius: 2px;
  transition: transform var(--transition-med, 0.35s);
}
.page-faq .faq-question .faq-toggle::before {
  width: 14px;
  height: 2px;
}
.page-faq .faq-question .faq-toggle::after {
  width: 2px;
  height: 14px;
}
.page-faq .faq-item[open] .faq-question .faq-toggle::after {
  transform: rotate(90deg);
  opacity: 0;
}
.page-faq .faq-item[open] .faq-question .faq-toggle::before {
  transform: rotate(0deg);
}
.page-faq .faq-item[open] .faq-question .faq-toggle {
  transform: rotate(180deg);
}

/* —— 答案 —— */
.page-faq .faq-answer {
  padding: var(--space-sm) var(--space-md) var(--space-md);
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: var(--fs-body, 1rem);
  line-height: var(--lh-body, 1.8);
  letter-spacing: var(--ls-body, 0.05em);
  color: var(--color-text-dark, #1A3E6B);
  background: var(--faq-answer-bg, #F4F1EE);
  border-top: 1px solid var(--faq-border, #E0DCD7);
}
.page-faq .faq-answer p {
  margin: 0 0 var(--space-sm);
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-answer a {
  color: var(--color-accent1, #D32F2F);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast, 0.2s);
}
.page-faq .faq-answer a:hover,
.page-faq .faq-answer a:focus-visible {
  color: var(--color-primary, #1A3E6B);
}
.page-faq .faq-answer strong {
  font-weight: var(--fw-bold, 600);
  color: var(--color-primary, #1A3E6B);
}

/* —— 信任声明 —— */
.page-faq .faq-trust {
  margin-top: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-primary, #1A3E6B);
  border-radius: var(--faq-radius, 6px);
  color: var(--color-text-light, #F5F5F5);
  text-align: center;
}
.page-faq .faq-trust .trust-text {
  font-size: var(--fs-small, 0.85rem);
  line-height: 1.7;
  margin: 0 0 var(--space-sm);
  opacity: 0.92;
}
.page-faq .faq-trust .trust-contact {
  font-size: var(--fs-body, 1rem);
  margin: 0;
}
.page-faq .faq-trust .trust-contact a {
  color: var(--color-accent2, #FFD700);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: var(--fw-bold, 600);
  transition: opacity var(--transition-fast, 0.2s);
}
.page-faq .faq-trust .trust-contact a:hover,
.page-faq .faq-trust .trust-contact a:focus-visible {
  opacity: 0.85;
}

/* ===== 响应式 ===== */

/* 平板及以上 */
@media (min-width: 640px) {
  .page-faq {
    padding: var(--space-lg) var(--space-xl) var(--space-2xl);
  }
  .page-faq .faq-category {
    padding: var(--space-lg) var(--space-lg) var(--space-md);
  }
  .page-faq .faq-question {
    padding: var(--space-md) var(--space-lg);
    font-size: calc(var(--fs-body, 1rem) + 0.05rem);
  }
  .page-faq .faq-answer {
    padding: var(--space-md) var(--space-lg);
  }
  .page-faq .faq-hero-text {
    padding: var(--space-lg);
  }
}

/* 桌面 */
@media (min-width: 1024px) {
  .page-faq {
    padding: var(--space-xl) var(--space-2xl) var(--space-2xl);
  }
  .page-faq .faq-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
  .page-faq .faq-category {
    margin-bottom: 0;
  }
  .page-faq .faq-category:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    max-width: 66%;
    margin-left: auto;
    margin-right: auto;
  }
  .page-faq .faq-search-wrap {
    max-width: 600px;
  }
  .page-faq .faq-hero {
    aspect-ratio: 1200 / 280;
    border-radius: var(--radius-md, 4px);
  }
  .page-faq .faq-title {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
  }
  .page-faq .faq-subtitle {
    font-size: clamp(1rem, 1.4vw, 1.2rem);
  }
}

/* 大桌面 */
@media (min-width: 1400px) {
  .page-faq .faq-list {
    gap: var(--space-xl);
  }
  .page-faq .faq-category {
    padding: var(--space-xl);
  }
}

/* ===== reduced-motion 尊重 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-question,
  .page-faq .faq-toggle,
  .page-faq .faq-answer,
  .page-faq .faq-category {
    transition: none !important;
    animation: none !important;
  }
  .page-faq .faq-item[open] .faq-question .faq-toggle::after,
  .page-faq .faq-item[open] .faq-question .faq-toggle::before {
    transition: none !important;
  }
}

/* ===== 滚动显现（data-reveal） ===== */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.page-faq [data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}