/* ===== 页面专属：问答中心 (page-faq) ===== */
.page-faq {
  --faq-gold: var(--primary-gold, #F0C040);
  --faq-deep: var(--primary-deep-purple, #2B0F4C);
  --faq-neon: var(--accent-neon, #00D4AA);
  --faq-cream: var(--mineral-cream, #F5F0E8);
  --faq-gray: var(--mineral-gray, #7A7A7A);
  --faq-bg-dark: var(--bg-dark, #1A0A2E);
  --faq-text-light: var(--text-light, #FFFFFF);
  --faq-text-dark: var(--text-dark, #1A1A1A);
  --faq-radius: var(--radius, 16px);
  --faq-radius-btn: var(--radius-btn, 9999px);
  --faq-transition: var(--transition, 0.3s cubic-bezier(0.25, 0.1, 0.25, 1));
  --faq-shadow: var(--shadow, 0 8px 24px rgba(0,0,0,0.4));

  display: block;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  color: var(--faq-text-light);
  background: transparent;
  font-family: var(--font-body, 'Inter', sans-serif);
}

/* 面包屑 */
.page-faq__breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: var(--faq-gray);
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
}
.page-faq__breadcrumb a {
  color: var(--faq-gold);
  text-decoration: none;
  transition: opacity var(--faq-transition);
}
.page-faq__breadcrumb a:hover,
.page-faq__breadcrumb a:focus-visible {
  opacity: 0.8;
  outline: 2px solid var(--faq-gold);
  outline-offset: 2px;
}
.page-faq__breadcrumb-sep {
  color: var(--faq-gray);
  user-select: none;
}
.page-faq__breadcrumb [aria-current="page"] {
  color: var(--faq-text-light);
  font-weight: 600;
}

/* 标题区 */
.page-faq__hero {
  margin-bottom: 2rem;
}
.page-faq__title {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--faq-gold);
  margin: 0 0 0.5rem;
  line-height: 1.15;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 8px rgba(240, 192, 64, 0.15);
}
.page-faq__subtitle {
  font-size: 1.05rem;
  color: var(--faq-gray);
  margin: 0;
  max-width: 560px;
  line-height: 1.5;
}

/* 搜索框 */
.page-faq__search-wrap {
  position: relative;
  margin-bottom: 2rem;
  max-width: 640px;
}
.page-faq__search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--faq-gray);
  pointer-events: none;
  width: 20px;
  height: 20px;
}
.page-faq__search-input {
  display: block;
  width: 100%;
  padding: 0.9rem 1rem 0.9rem 3rem;
  background: rgba(255,255,255,0.06);
  border: 1.5px solid rgba(240, 192, 64, 0.25);
  border-radius: var(--faq-radius-btn);
  color: var(--faq-text-light);
  font-size: 1rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  transition: border-color var(--faq-transition), box-shadow var(--faq-transition), background var(--faq-transition);
  backdrop-filter: blur(4px);
}
.page-faq__search-input::placeholder {
  color: var(--faq-gray);
  opacity: 0.7;
}
.page-faq__search-input:focus {
  outline: none;
  border-color: var(--faq-gold);
  box-shadow: 0 0 0 3px rgba(240, 192, 64, 0.15), 0 0 20px rgba(240, 192, 64, 0.05);
  background: rgba(255,255,255,0.08);
}

/* 主布局：左侧目录 + 右侧列表 */
.page-faq__layout {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
}

/* 左侧导航目录 */
.page-faq__nav {
  flex: 0 0 180px;
  position: sticky;
  top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.25rem 0;
  border-left: 2px solid rgba(240, 192, 64, 0.2);
}
.page-faq__nav-link {
  display: block;
  padding: 0.55rem 1rem 0.55rem 1.25rem;
  color: var(--faq-gray);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 0 var(--faq-radius-btn) var(--faq-radius-btn) 0;
  transition: all var(--faq-transition);
  position: relative;
  border-left: 3px solid transparent;
  margin-left: -2px;
}
.page-faq__nav-link::before {
  content: '';
  position: absolute;
  left: -2px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: var(--faq-gold);
  border-radius: 0 2px 2px 0;
  transition: height var(--faq-transition);
}
.page-faq__nav-link:hover,
.page-faq__nav-link:focus-visible {
  color: var(--faq-gold);
  background: rgba(240, 192, 64, 0.06);
}
.page-faq__nav-link:hover::before,
.page-faq__nav-link:focus-visible::before {
  height: 60%;
}
.page-faq__nav-link:focus-visible {
  outline: 2px solid var(--faq-gold);
  outline-offset: 2px;
}

/* 右侧列表 */
.page-faq__list {
  flex: 1;
  min-width: 0;
}

/* 分类区块 */
.page-faq__section {
  margin-bottom: 3rem;
  scroll-margin-top: 2rem;
}
.page-faq__section-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--faq-text-light);
  margin: 0 0 0.25rem;
  line-height: 1.2;
}
.page-faq__section-title svg {
  flex-shrink: 0;
  color: var(--faq-gold);
  width: 28px;
  height: 28px;
  stroke-width: 1.8;
}
.page-faq__section-desc {
  margin: 0 0 1.5rem;
  font-size: 0.95rem;
  color: var(--faq-gray);
  padding-left: 2.4rem;
}

/* ===== 手风琴组件 ===== */
.faq-item {
  margin-bottom: 0.75rem;
  border-radius: var(--faq-radius);
  overflow: hidden;
  transition: box-shadow var(--faq-transition);
}
.faq-item:focus-within {
  box-shadow: 0 0 0 2px var(--faq-gold);
}

/* 触发器 — 胶囊按钮 */
.faq-item__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 1.5rem;
  background: var(--faq-deep);
  border: 1.5px solid rgba(240, 192, 64, 0.35);
  border-radius: var(--faq-radius-btn);
  color: var(--faq-text-light);
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all var(--faq-transition);
  position: relative;
  font-family: var(--font-body, 'Inter', sans-serif);
  line-height: 1.4;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.faq-item__trigger:hover {
  border-color: var(--faq-gold);
  background: rgba(43, 15, 76, 0.85);
  box-shadow: 0 4px 16px rgba(240, 192, 64, 0.12);
}
.faq-item__trigger:focus-visible {
  outline: none;
  border-color: var(--faq-gold);
  box-shadow: 0 0 0 3px rgba(240, 192, 64, 0.2);
}
.faq-item__q {
  flex: 1;
  padding-right: 1rem;
}
.faq-item__icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--faq-gold);
  transition: transform var(--faq-transition);
  line-height: 1;
}

/* 展开状态 */
.faq-item[data-open="true"] .faq-item__trigger {
  border-radius: var(--faq-radius-btn) var(--faq-radius-btn) 0 0;
  border-color: var(--faq-gold);
  background: var(--faq-deep);
}
.faq-item[data-open="true"] .faq-item__icon {
  transform: rotate(45deg);
}

/* 内容面板 */
.faq-item__content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
  background: transparent;
  border-radius: 0 0 var(--faq-radius) var(--faq-radius);
}
.faq-item[data-open="true"] .faq-item__content {
  grid-template-rows: 1fr;
}
.faq-item__content > div {
  overflow: hidden;
}
.faq-item__answer {
  padding: 1.2rem 1.5rem 1.5rem;
  background: rgba(122, 122, 122, 0.12);
  border: 1.5px solid rgba(240, 192, 64, 0.15);
  border-top: none;
  border-radius: 0 0 var(--faq-radius) var(--faq-radius);
  color: var(--faq-text-light);
  line-height: 1.7;
  font-size: 0.95rem;
}
.faq-item__answer p {
  margin: 0 0 0.75rem;
}
.faq-item__answer p:last-child {
  margin-bottom: 0;
}

/* 等宽数字/版本 */
.faq-item__mono {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  color: var(--faq-neon);
  font-weight: 600;
  letter-spacing: 0.02em;
  background: rgba(0, 212, 170, 0.08);
  padding: 0.1em 0.4em;
  border-radius: 4px;
}

/* 内链 */
.faq-item__link {
  color: var(--faq-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: rgba(240, 192, 64, 0.3);
  font-weight: 600;
  transition: text-decoration-color var(--faq-transition);
}
.faq-item__link:hover,
.faq-item__link:focus-visible {
  text-decoration-color: var(--faq-gold);
  color: #ffd966;
}

/* 图片 */
.faq-item__img-wrap {
  margin-top: 1rem;
  border-radius: var(--faq-radius);
  overflow: hidden;
  max-width: 400px;
}
.faq-item__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--faq-radius);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  transition: transform 0.4s ease;
}
.faq-item__img:hover {
  transform: scale(1.02);
}

/* 更多帮助 */
.page-faq__more-help {
  margin-top: 3rem;
  padding: 2rem;
  text-align: center;
  background: rgba(240, 192, 64, 0.04);
  border: 1px dashed rgba(240, 192, 64, 0.25);
  border-radius: var(--faq-radius);
}
.page-faq__more-help p {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  color: var(--faq-gray);
}
.page-faq__help-btn {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.65rem 2rem;
}

/* ===== 响应式 ===== */
/* 移动端优先 — 窄屏默认 */
@media (max-width: 767px) {
  .page-faq {
    padding: 1.25rem 1rem 3rem;
  }
  .page-faq__layout {
    flex-direction: column;
    gap: 1.5rem;
  }
  .page-faq__nav {
    position: static;
    flex: none;
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 0.4rem;
    border-left: none;
    padding: 0.25rem 0 0.5rem;
    margin-bottom: 0.5rem;
    scrollbar-width: thin;
    scrollbar-color: var(--faq-gold) transparent;
    -webkit-overflow-scrolling: touch;
    width: 100%;
  }
  .page-faq__nav::-webkit-scrollbar {
    height: 3px;
  }
  .page-faq__nav::-webkit-scrollbar-thumb {
    background: var(--faq-gold);
    border-radius: 4px;
  }
  .page-faq__nav-link {
    flex: 0 0 auto;
    white-space: nowrap;
    padding: 0.45rem 1rem;
    border: 1px solid rgba(240, 192, 64, 0.2);
    border-radius: var(--faq-radius-btn);
    font-size: 0.85rem;
    background: rgba(43, 15, 76, 0.4);
    margin-left: 0;
  }
  .page-faq__nav-link::before {
    display: none;
  }
  .page-faq__nav-link:hover,
  .page-faq__nav-link:focus-visible {
    background: rgba(240, 192, 64, 0.12);
    border-color: var(--faq-gold);
  }

  .page-faq__section-title {
    font-size: 1.35rem;
  }
  .page-faq__section-desc {
    padding-left: 0;
    font-size: 0.9rem;
  }

  .faq-item__trigger {
    padding: 0.85rem 1.1rem;
    font-size: 0.95rem;
  }
  .faq-item__answer {
    padding: 1rem 1.1rem 1.25rem;
    font-size: 0.9rem;
  }
  .faq-item__img-wrap {
    max-width: 100%;
  }

  .page-faq__search-wrap {
    max-width: 100%;
  }
  .page-faq__search-input {
    padding: 0.75rem 1rem 0.75rem 2.8rem;
    font-size: 0.95rem;
  }

  .page-faq__more-help {
    padding: 1.5rem 1rem;
  }
}

/* 桌面增强 */
@media (min-width: 768px) {
  .page-faq__nav {
    min-width: 160px;
  }
  .page-faq__section {
    margin-bottom: 3.5rem;
  }
  .faq-item__trigger {
    padding: 1.1rem 1.8rem;
    font-size: 1.05rem;
  }
  .faq-item__answer {
    padding: 1.4rem 1.8rem 1.8rem;
  }
}

/* 大屏舒适 */
@media (min-width: 1024px) {
  .page-faq {
    padding: 2.5rem 2.5rem 5rem;
  }
  .page-faq__layout {
    gap: 3.5rem;
  }
  .page-faq__nav {
    flex: 0 0 200px;
  }
}

/* 极窄屏保护 */
@media (max-width: 400px) {
  .page-faq__title {
    font-size: 1.6rem;
  }
  .page-faq__breadcrumb {
    font-size: 0.78rem;
  }
  .faq-item__trigger {
    padding: 0.7rem 0.9rem;
    font-size: 0.88rem;
    border-radius: 12px;
  }
  .faq-item__answer {
    padding: 0.8rem 0.9rem 1rem;
  }
}

/* ===== 可访问性：减少动效 ===== */
@media (prefers-reduced-motion: reduce) {
  .faq-item__content {
    transition: none;
  }
  .faq-item__trigger,
  .faq-item__icon,
  .faq-item__img {
    transition: none;
  }
  .faq-item__trigger:hover {
    transform: none;
  }
  .faq-item__img:hover {
    transform: none;
  }
  .page-faq__search-input {
    transition: none;
  }
}

/* ===== 空状态 / 过滤隐藏 ===== */
.faq-item[data-hidden="true"] {
  display: none;
}
.faq-item {
  transition: opacity 0.2s ease;
}