/* ========================================
   page-faq – 问答中心专属样式
   作用域限定 .page-faq
   移动端优先 + 桌面增强
   ======================================== */
.page-faq {
  --faq-card-bg: #5A2D8C;
  --faq-card-border: #D4AF37;
  --faq-card-radius: 16px;
  --faq-card-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  --faq-gap: 1.25rem;
  --faq-icon-size: 48px;
  --faq-indicator-size: 10px;
  background-color: var(--color-bg-main, #0B0C10);
  color: var(--color-text-white, #FFFFFF);
  padding: 1.5rem 1rem 3rem;
  min-height: 60vh;
}

/* ---------- 容器 ---------- */
.page-faq .page-container {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.875rem;
  color: var(--color-text, #E0E0E0);
  margin-bottom: 1.5rem;
  opacity: 0.85;
}
.page-faq .breadcrumb a {
  color: var(--color-link, #9B59B6);
  text-decoration: none;
  transition: color 0.2s ease;
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--color-accent, #D4AF37);
  outline: none;
}
.page-faq .breadcrumb__sep {
  color: var(--color-accent-dark, #B8860B);
  font-weight: 700;
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--color-text-white, #FFFFFF);
  font-weight: 500;
}

/* ---------- 页面标题区 ---------- */
.page-faq__header {
  margin-bottom: 2.5rem;
}
.page-faq__title {
  font-family: "Noto Sans SC", system-ui, sans-serif;
  font-weight: 700;
  font-size: 2rem;
  line-height: 1.2;
  color: var(--color-text-white, #FFFFFF);
  margin: 0 0 0.5rem;
  text-shadow: 0 2px 12px rgba(90, 45, 140, 0.6);
  letter-spacing: 0.02em;
}
.page-faq__subtitle {
  font-size: 1rem;
  color: var(--color-text, #E0E0E0);
  max-width: 640px;
  line-height: 1.6;
  margin: 0;
}

/* ---------- 分组面板 ---------- */
.page-faq .page-faq__group {
  background: var(--color-bg-overlay, #1A0A2E);
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: var(--faq-card-radius);
  padding: 1.5rem 1rem;
  margin-bottom: 2rem;
  box-shadow: var(--faq-card-shadow);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.page-faq .page-faq__group:hover {
  border-color: rgba(212, 175, 55, 0.5);
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.5);
}
.page-faq .page-faq__group:last-child {
  margin-bottom: 0;
}

/* ---------- 分组头部 ---------- */
.page-faq__group-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}
.page-faq__group-head--simple {
  border-bottom-color: rgba(155, 89, 182, 0.3);
}
.page-faq__resolved-icon {
  flex-shrink: 0;
  width: var(--faq-icon-size);
  height: var(--faq-icon-size);
  border-radius: 50%;
  object-fit: contain;
  background: rgba(212, 175, 55, 0.1);
  padding: 4px;
  border: 2px solid var(--color-accent, #D4AF37);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.page-faq__resolved-icon:hover {
  transform: scale(1.08);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
}
.page-faq__group-title {
  font-family: "Noto Sans SC", system-ui, sans-serif;
  font-weight: 700;
  font-size: 1.375rem;
  line-height: 1.3;
  color: var(--color-text-white, #FFFFFF);
  margin: 0 0 0.25rem;
}
.page-faq__group-status {
  font-size: 0.9375rem;
  color: var(--color-accent, #D4AF37);
  margin: 0;
  line-height: 1.5;
}

/* ---------- 手风琴卡片 ---------- */
.faq-card {
  display: block;
  background: var(--faq-card-bg);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--faq-card-radius);
  margin-bottom: var(--faq-gap);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}
.faq-card:last-child {
  margin-bottom: 0;
}
.faq-card:hover {
  border-color: var(--faq-card-border);
  box-shadow: 0 4px 18px rgba(212, 175, 55, 0.15);
}
.faq-card[open] {
  border-color: var(--faq-card-border);
  box-shadow: 0 4px 24px rgba(212, 175, 55, 0.2);
}

/* summary – 可点击标题区 */
.faq-card__summary {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1rem 1.125rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background-color 0.2s ease;
}
.faq-card__summary::-webkit-details-marker {
  display: none;
}
.faq-card__summary:hover,
.faq-card__summary:focus-visible {
  background-color: rgba(212, 175, 55, 0.08);
  outline: none;
}
.faq-card__summary:focus-visible {
  outline: 2px solid var(--color-accent, #D4AF37);
  outline-offset: -2px;
  border-radius: var(--faq-card-radius) var(--faq-card-radius) 0 0;
}

/* 图标 */
.faq-card__icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: contain;
  background: rgba(212, 175, 55, 0.12);
  padding: 4px;
  border: 1px solid rgba(212, 175, 55, 0.35);
  transition: transform 0.2s ease, background 0.2s ease;
}
.faq-card__summary:hover .faq-card__icon {
  transform: scale(1.06);
  background: rgba(212, 175, 55, 0.2);
}

/* 问题文字 */
.faq-card__question {
  flex: 1;
  font-family: "Noto Sans SC", system-ui, sans-serif;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text-white, #FFFFFF);
  letter-spacing: 0.01em;
}

/* 展开指示器（箭头） */
.faq-card__indicator {
  flex-shrink: 0;
  width: var(--faq-indicator-size);
  height: var(--faq-indicator-size);
  border-right: 2px solid var(--color-accent, #D4AF37);
  border-bottom: 2px solid var(--color-accent, #D4AF37);
  transform: rotate(45deg);
  transition: transform 0.3s ease;
  margin-left: auto;
  opacity: 0.7;
}
.faq-card[open] .faq-card__indicator {
  transform: rotate(-135deg);
  opacity: 1;
}

/* 答案区域 – 用 max-height 实现平滑展开 */
.faq-card__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease, padding 0.3s ease, opacity 0.3s ease;
  padding: 0 1.125rem;
  opacity: 0;
  color: var(--color-text, #E0E0E0);
  font-size: 0.9375rem;
  line-height: 1.7;
  border-top: 0 solid rgba(212, 175, 55, 0.15);
}
.faq-card[open] .faq-card__answer {
  max-height: 500px;
  padding: 0.75rem 1.125rem 1.25rem;
  opacity: 1;
  border-top-width: 1px;
  border-top-style: solid;
}
.faq-card__answer p {
  margin: 0 0 0.5rem;
}
.faq-card__answer p:last-child {
  margin-bottom: 0;
}
.faq-card__answer a {
  color: var(--color-link, #9B59B6);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s ease;
}
.faq-card__answer a:hover,
.faq-card__answer a:focus-visible {
  color: var(--color-accent, #D4AF37);
  outline: none;
}

/* ---------- 桌面增强 (≥768px) ---------- */
@media (min-width: 768px) {
  .page-faq {
    padding: 2.5rem 2rem 4rem;
  }
  .page-faq__title {
    font-size: 2.625rem;
  }
  .page-faq__subtitle {
    font-size: 1.125rem;
  }
  .page-faq .page-faq__group {
    padding: 2rem 1.75rem;
    margin-bottom: 2.5rem;
  }
  .faq-card__summary {
    padding: 1.125rem 1.5rem;
  }
  .faq-card__icon {
    width: 48px;
    height: 48px;
  }
  .faq-card__question {
    font-size: 1.0625rem;
  }
  .faq-card__answer {
    font-size: 1rem;
  }
  .faq-card[open] .faq-card__answer {
    padding: 0.875rem 1.5rem 1.5rem;
  }
  .page-faq__resolved-icon {
    --faq-icon-size: 56px;
  }
  .page-faq__group-title {
    font-size: 1.5rem;
  }
  .page-faq__group-head {
    gap: 1.25rem;
  }
}

/* ---------- 大桌面 (≥1024px) ---------- */
@media (min-width: 1024px) {
  .page-faq {
    padding: 3rem 2.5rem 5rem;
  }
  .page-faq .page-faq__group {
    padding: 2.5rem 2.25rem;
  }
  .page-faq__title {
    font-size: 3rem;
  }
  .faq-card {
    margin-bottom: 1rem;
  }
  .faq-card__question {
    font-size: 1.1rem;
  }
}

/* ---------- 宽窄面板微调 ---------- */
.page-faq .section-panel--wide {
  max-width: 100%;
}
.page-faq .section-panel--narrow {
  max-width: 100%;
}
@media (min-width: 840px) {
  .page-faq .section-panel--narrow {
    max-width: 85%;
    margin-left: auto;
    margin-right: auto;
  }
}
@media (min-width: 1024px) {
  .page-faq .section-panel--narrow {
    max-width: 75%;
  }
}