/* ===== page-faq 专属样式 ===== */
.page-faq {
  --faq-gold: #F4A261;
  --faq-red: #E63946;
  --faq-card-bg: #1B2A4A;
  --faq-border: #2A3F66;
  --faq-text-light: #B0C4DE;
  --faq-text-white: #FFFFFF;
  --faq-accent-cyan: #00FFC6;
  --faq-radius: 8px;
  --faq-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --faq-sidebar-width: 220px;

  display: block;
  background-color: #0A1F44;
  color: var(--faq-text-white);
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  padding-bottom: 3rem;
}

/* 容器 */
.page-faq .container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* 面包屑 */
.page-faq .faq__breadcrumb {
  padding-top: 1rem;
  padding-bottom: 0.5rem;
  font-size: 0.85rem;
  color: var(--faq-text-light);
  letter-spacing: 0.02em;
}

.page-faq .faq__breadcrumb-link {
  color: var(--faq-gold);
  text-decoration: none;
  transition: color var(--faq-transition);
}

.page-faq .faq__breadcrumb-link:hover {
  color: #FF6B6B;
}

.page-faq .faq__breadcrumb-sep {
  margin: 0 0.4rem;
  color: var(--faq-border);
}

.page-faq .faq__breadcrumb-current {
  color: var(--faq-text-white);
  font-weight: 600;
}

/* 标题区 */
.page-faq .faq__hero {
  padding: 2rem 0 1.5rem;
  position: relative;
  border-bottom: 2px solid var(--faq-border);
  margin-bottom: 2rem;
}

.page-faq .faq__hero::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 80px;
  height: 2px;
  background: var(--faq-gold);
}

.page-faq .faq__title {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  font-weight: 800;
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.2rem;
  color: var(--faq-text-white);
}

.page-faq .faq__subtitle {
  font-size: 1rem;
  color: var(--faq-text-light);
  margin: 0 0 1.2rem;
  letter-spacing: 0.03em;
}

/* 搜索框 */
.page-faq .faq__search-wrap {
  position: relative;
  max-width: 480px;
}

.page-faq .faq__search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--faq-text-light);
  pointer-events: none;
}

.page-faq .faq__search-input {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.8rem;
  background: var(--faq-card-bg);
  border: 1.5px solid var(--faq-border);
  border-radius: 100px;
  color: var(--faq-text-white);
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 0.95rem;
  transition: border-color var(--faq-transition), box-shadow var(--faq-transition);
  outline: none;
}

.page-faq .faq__search-input::placeholder {
  color: var(--faq-text-light);
  opacity: 0.7;
}

.page-faq .faq__search-input:focus {
  border-color: var(--faq-gold);
  box-shadow: 0 0 0 3px rgba(244, 162, 97, 0.2);
}

/* 布局：默认移动端单栏 */
.page-faq .faq__layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* 索引侧边栏（移动端先隐藏部分） */
.page-faq .faq__index {
  display: none;
}

.page-faq .faq__index-title {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faq-gold);
  margin: 0 0 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--faq-border);
}

.page-faq .faq__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq__index-item {
  margin-bottom: 0.3rem;
}

.page-faq .faq__index-link {
  display: block;
  padding: 0.45rem 0.6rem;
  font-size: 0.9rem;
  color: var(--faq-text-light);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all var(--faq-transition);
  border-radius: 0 4px 4px 0;
  line-height: 1.4;
}

.page-faq .faq__index-link:hover,
.page-faq .faq__index-link:focus {
  color: var(--faq-gold);
  border-left-color: var(--faq-gold);
  background: rgba(244, 162, 97, 0.06);
}

/* 内容区 */
.page-faq .faq__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* 卡片 */
.page-faq .faq__item {
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-border);
  border-radius: var(--faq-radius);
  overflow: hidden;
  transition: border-color var(--faq-transition), box-shadow var(--faq-transition);
  position: relative;
}

.page-faq .faq__item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--faq-gold), var(--faq-red));
  opacity: 0;
  transition: opacity var(--faq-transition);
}

.page-faq .faq__item:hover {
  border-color: rgba(244, 162, 97, 0.3);
}

.page-faq .faq__item:hover::before {
  opacity: 1;
}

/* 问题头部 */
.page-faq .faq__question {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.2rem;
  cursor: pointer;
  user-select: none;
  transition: background var(--faq-transition);
}

.page-faq .faq__question:hover {
  background: rgba(255, 255, 255, 0.03);
}

.page-faq .faq__qicon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
}

.page-faq .faq__qicon circle {
  stroke: var(--faq-gold);
}

.page-faq .faq__qicon text {
  fill: var(--faq-gold);
}

.page-faq .faq__qtext {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  font-weight: 700;
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  margin: 0;
  flex: 1;
  color: var(--faq-text-white);
  letter-spacing: 0.01em;
  line-height: 1.4;
}

.page-faq .faq__indicator {
  flex-shrink: 0;
  color: var(--faq-text-light);
  transition: transform var(--faq-transition);
}

.page-faq .faq__question[aria-expanded="true"] .faq__indicator {
  transform: rotate(180deg);
  color: var(--faq-gold);
}

/* 答案区 */
.page-faq .faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 1.2rem;
  color: var(--faq-text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-faq .faq__question[aria-expanded="true"] + .faq__answer {
  max-height: 600px;
  padding: 0 1.2rem 1.2rem;
}

.page-faq .faq__answer p {
  margin: 0 0 0.6rem;
}

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

.page-faq .faq__answer a {
  color: var(--faq-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--faq-transition);
}

.page-faq .faq__answer a:hover {
  color: #FF6B6B;
}

.page-faq .faq__answer strong {
  color: var(--faq-text-white);
  font-weight: 600;
}

.page-faq .faq__note {
  font-size: 0.85rem;
  color: var(--faq-accent-cyan);
  padding: 0.4rem 0.7rem;
  background: rgba(0, 255, 198, 0.06);
  border-left: 3px solid var(--faq-accent-cyan);
  border-radius: 0 4px 4px 0;
  margin-top: 0.4rem;
}

/* 图片容器 */
.page-faq .faq__img-wrap {
  margin-top: 0.8rem;
  border: 1px solid var(--faq-border);
  border-radius: 6px;
  overflow: hidden;
  background: #0A1F44;
  display: inline-block;
  max-width: 100%;
}

.page-faq .faq__img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  background: #0A1F44;
}

/* 页脚注释 */
.page-faq .faq__footnote {
  margin-top: 2.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--faq-border);
}

.page-faq .faq__trust {
  font-size: 0.82rem;
  color: var(--faq-text-light);
  opacity: 0.7;
  margin: 0;
  line-height: 1.5;
}

/* ===== 桌面端 ≥768px ===== */
@media (min-width: 768px) {
  .page-faq .container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }

  .page-faq .faq__hero {
    padding: 3rem 0 1.8rem;
    margin-bottom: 2.5rem;
  }

  .page-faq .faq__layout {
    flex-direction: row;
    gap: 2.5rem;
  }

  .page-faq .faq__index {
    display: block;
    flex-shrink: 0;
    width: var(--faq-sidebar-width);
    position: sticky;
    top: calc(72px + 1.5rem);
    align-self: flex-start;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    padding-right: 0.5rem;
  }

  .page-faq .faq__index::-webkit-scrollbar {
    width: 3px;
  }

  .page-faq .faq__index::-webkit-scrollbar-track {
    background: transparent;
  }

  .page-faq .faq__index::-webkit-scrollbar-thumb {
    background: var(--faq-border);
    border-radius: 6px;
  }

  .page-faq .faq__content {
    flex: 1;
    min-width: 0;
  }

  .page-faq .faq__item {
    border-radius: 10px;
  }

  .page-faq .faq__question {
    padding: 1.1rem 1.5rem;
  }

  .page-faq .faq__qicon {
    width: 40px;
    height: 40px;
  }

  .page-faq .faq__answer {
    padding: 0 1.5rem;
  }

  .page-faq .faq__question[aria-expanded="true"] + .faq__answer {
    padding: 0 1.5rem 1.3rem;
  }

  .page-faq .faq__qtext {
    font-size: 1.1rem;
  }

  .page-faq .faq__img-wrap {
    max-width: 320px;
  }
}

/* ===== 大桌面端 ≥1024px ===== */
@media (min-width: 1024px) {
  .page-faq .faq__index {
    width: 250px;
  }

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

  .page-faq .faq__content {
    gap: 1.2rem;
  }

  .page-faq .faq__item {
    border-radius: 12px;
  }

  .page-faq .faq__img-wrap {
    max-width: 340px;
  }
}

/* ===== 高密度屏幕适配 ===== */
@media (min-width: 1400px) {
  .page-faq .container {
    max-width: 1320px;
  }

  .page-faq .faq__index {
    width: 280px;
  }
}