.page-faq {
  --faq-index-w: 268px;
  --faq-gap: 48px;
  --faq-line: rgba(201, 168, 106, 0.08);
  --faq-surface: rgba(246, 245, 240, 0.9);
}

.page-faq .breadcrumb {
  margin-bottom: 32px;
}

.page-faq .page-header {
  max-width: 720px;
  padding: 12px 0 40px;
}

.page-faq .page-title {
  font-size: 32px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.page-faq .page-lead {
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.75;
  margin: 0;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 8px;
  padding-bottom: 80px;
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index {
  background: var(--color-primary);
  border-radius: var(--radius);
  padding: 24px;
  color: #fff;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-index::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(135deg, rgba(201, 168, 106, 0.12) 0%, transparent 42%),
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 100% 100%, 22px 22px, 22px 22px;
  pointer-events: none;
}

.page-faq .faq-index-heading {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.page-faq .faq-index-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-faq .faq-index-total {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.62);
}

.page-faq .faq-index-total .status-dot {
  background: var(--color-cyan);
}

.page-faq .faq-index-nav {
  position: relative;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 12px 0 16px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px 16px;
}

.page-faq .faq-index-item {
  border-bottom: none;
}

.page-faq .faq-index-item a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 2px;
  font-size: 14px;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}

.page-faq .faq-index-item a:hover,
.page-faq .faq-index-item a:focus-visible {
  color: #fff;
  padding-left: 6px;
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-accent);
  letter-spacing: 0.06em;
}

.page-faq .faq-index-note {
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
}

.page-faq .faq-index-note p {
  margin: 0 0 6px;
}

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

.page-faq .faq-index-note a {
  color: var(--color-cyan);
  text-decoration: none;
  font-weight: 500;
}

/* ---------- 右栏内容 ---------- */
.page-faq .faq-content {
  min-width: 0;
  padding: 4px 0 0;
  background-image:
    linear-gradient(var(--faq-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-line) 1px, transparent 1px);
  background-size: 28px 28px;
}

.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 24px);
  padding: 12px 0 36px;
  border-bottom: 1px solid var(--color-line);
}

.page-faq .faq-section:last-child {
  border-bottom: none;
}

.page-faq .faq-section-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin-bottom: 8px;
}

.page-faq .faq-section-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-cta);
  letter-spacing: 0.04em;
}

.page-faq .faq-section-head h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 26px;
  line-height: 1.3;
  color: var(--color-primary);
}

.page-faq .faq-section-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  background: rgba(201, 168, 106, 0.1);
  padding: 2px 10px;
  border-radius: 999px;
}

.page-faq .faq-section-intro {
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.75;
  max-width: 640px;
  margin: 4px 0 24px;
}

.page-faq .faq-section-intro a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: rgba(201, 168, 106, 0.45);
  text-underline-offset: 4px;
  transition: text-decoration-color 0.25s var(--ease);
}

.page-faq .faq-section-intro a:hover {
  text-decoration-color: var(--color-accent);
}

/* ---------- 手风琴问答 ---------- */
.page-faq .faq-item {
  background: var(--faq-surface);
  border-radius: 12px;
  margin-bottom: 10px;
  border: 1px solid rgba(229, 226, 218, 0.7);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-faq .faq-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.page-faq .faq-item details summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 52px 18px 20px;
  position: relative;
  user-select: none;
}

.page-faq .faq-item details summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item summary h3 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
  transition: color 0.25s var(--ease);
}

.page-faq .faq-item details[open] summary {
  background: rgba(201, 168, 106, 0.08);
  border-radius: 12px 12px 0 0;
}

.page-faq .faq-item details[open] summary h3 {
  color: var(--color-primary);
}

.page-faq .faq-item summary::after {
  content: '';
  position: absolute;
  right: 22px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--color-cta);
  border-bottom: 2px solid var(--color-cta);
  transform: translateY(-72%) rotate(45deg);
  transition: transform 0.25s var(--ease);
}

.page-faq .faq-item details[open] summary::after {
  transform: translateY(-28%) rotate(-135deg);
}

.page-faq .faq-answer {
  padding: 2px 20px 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text);
}

.page-faq .faq-answer p {
  margin: 0 0 12px;
  max-width: 62ch;
}

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

.page-faq .faq-answer a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: rgba(201, 168, 106, 0.4);
  text-underline-offset: 4px;
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 24px 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

.page-faq .faq-figure figcaption {
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
}

.page-faq .faq-figure--records {
  max-width: 640px;
}

.page-faq .faq-figure--mobile {
  max-width: 560px;
  margin-left: auto;
  margin-right: 0;
}

/* ---------- 中等屏适配 ---------- */
@media (min-width: 620px) {
  .page-faq .page-title {
    font-size: 38px;
  }

  .page-faq .faq-section-head h2 {
    font-size: 28px;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 940px) {
  .page-faq .breadcrumb {
    margin-bottom: 40px;
  }

  .page-faq .page-header {
    padding: 16px 0 56px;
  }

  .page-faq .page-title {
    font-size: 42px;
  }

  .page-faq .page-lead {
    font-size: 17px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-index-list {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 4px 0 16px;
  }

  .page-faq .faq-index-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  }

  .page-faq .faq-index-item:last-child {
    border-bottom: none;
  }

  .page-faq .faq-index-item a {
    gap: 12px;
    padding: 14px 2px;
    font-size: 15px;
  }

  .page-faq .faq-content {
    padding: 8px 0 0 20px;
  }

  .page-faq .faq-section {
    padding: 16px 0 48px;
  }

  .page-faq .faq-section-intro {
    font-size: 16px;
    margin-bottom: 28px;
  }
}

/* ---------- 大屏优化 ---------- */
@media (min-width: 1240px) {
  .page-faq .faq-layout {
    --faq-index-w: 300px;
    gap: 64px;
  }
}