.page-faq {
  --faq-line: var(--color-line);
  font-family: var(--font-sans);
  color: var(--color-text-soft);
  padding-bottom: 72px;
}

/* ===== 顶部题头 ===== */
.page-faq .faq-hero {
  position: relative;
  padding: 36px 0 28px;
  background:
    linear-gradient(135deg, rgba(255, 106, 0, 0.07) 0%, transparent 42%),
    linear-gradient(180deg, var(--color-surface-2) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange) 0%, var(--color-terra) 55%, rgba(255, 106, 0, 0) 100%);
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--color-text-dim);
}

.page-faq .breadcrumb a {
  color: var(--color-terra);
  text-decoration: none;
  transition: color 0.15s ease;
}

.page-faq .breadcrumb a:hover {
  color: var(--color-orange);
}

.page-faq .breadcrumb li[aria-current="page"] {
  color: var(--color-cream);
  font-weight: 500;
}

.page-faq .faq-hero-copy .eyebrow {
  color: var(--color-orange);
}

.page-faq .faq-hero-copy h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--color-cream);
}

.page-faq .faq-hero-copy .lead {
  margin: 14px 0 0;
  max-width: 640px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-soft);
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-stat {
  padding: 14px 14px 12px;
  background: rgba(31, 35, 38, 0.7);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-cream);
}

.page-faq .faq-stat-value small {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-orange);
  margin-left: 2px;
}

.page-faq .faq-stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.4;
  color: var(--color-text-dim);
}

/* ===== 氛围图 ===== */
.page-faq .faq-image-band {
  padding-top: 24px;
}

.page-faq .faq-top-figure {
  margin: 0;
}

.page-faq .faq-top-frame {
  aspect-ratio: 2 / 1;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-top-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ===== 主栅格 ===== */
.page-faq .faq-layout {
  margin-top: 40px;
}

/* ===== 左侧目录 ===== */
.page-faq .faq-catalog-inner {
  padding-top: 4px;
}

.page-faq .faq-catalog-title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-dim);
  text-transform: uppercase;
  border-bottom: 1px solid var(--color-line);
}

.page-faq .faq-catalog-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-faq .faq-catalog-list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-catalog-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 14px;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-soft);
  background: var(--color-surface-2);
  border: 1px solid var(--color-line);
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.page-faq .faq-catalog-link:hover {
  color: var(--color-cream);
  border-color: var(--color-terra);
}

.page-faq .faq-catalog-link:focus-visible,
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: -2px;
}

.page-faq .faq-catalog-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-orange);
}

.page-faq .faq-catalog-note {
  margin: 18px 0 0;
  padding-left: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-dim);
  border-left: 2px solid var(--color-moss-dark);
}

.page-faq .faq-catalog-note a {
  color: var(--color-terra);
  text-decoration: none;
}

/* ===== 右侧问答面板 ===== */
.page-faq .faq-sections {
  margin-top: 36px;
}

.page-faq .faq-section {
  position: relative;
  margin: 0 0 28px;
  padding: 26px 20px 22px;
  background: linear-gradient(180deg, rgba(44, 49, 54, 0.86) 0%, rgba(36, 41, 45, 0.6) 100%);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-section::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 56px;
  height: 2px;
  background: var(--color-orange);
}

.page-faq .faq-section-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

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

.page-faq .faq-section-head svg {
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--color-terra);
}

.page-faq .faq-section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-cream);
}

/* ===== 手风琴条目 ===== */
.page-faq .faq-item {
  margin-bottom: 10px;
  background: rgba(31, 35, 38, 0.65);
  border: 1px solid var(--color-line);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .faq-item[open] {
  border-color: rgba(232, 130, 85, 0.55);
  box-shadow: 0 0 0 1px rgba(232, 130, 85, 0.14), var(--shadow-sm);
}

.page-faq .faq-item summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-cream);
  user-select: none;
  transition: background 0.18s ease;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--color-orange);
  transition: transform 0.2s ease;
}

.page-faq .faq-item[open] summary {
  border-bottom: 1px solid var(--color-line);
  background: linear-gradient(90deg, rgba(255, 106, 0, 0.08) 0%, rgba(255, 106, 0, 0.02) 70%, transparent 100%);
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(45deg);
}

.page-faq .faq-item-body {
  padding: 14px 16px 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-soft);
}

.page-faq .faq-item-body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item-body a {
  color: var(--color-terra);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 130, 85, 0.4);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.page-faq .faq-item-body a:hover {
  color: var(--color-orange);
  border-color: var(--color-orange);
}

.page-faq .faq-highlight {
  color: var(--color-terra);
  font-weight: 600;
  background: rgba(232, 130, 85, 0.1);
  padding: 0 5px;
}

/* ===== 下载示意图 ===== */
.page-faq .faq-download-figure {
  margin: 20px 0 0;
}

.page-faq .faq-download-frame {
  aspect-ratio: 3 / 2;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-download-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-download-figure .figure-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-dim);
}

/* ===== 底部联系卡片 ===== */
.page-faq .faq-more,
.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-more {
  margin-top: 12px;
}

.page-faq .faq-more-card {
  position: relative;
  padding: 28px 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 106, 0, 0.35);
  background:
    linear-gradient(135deg, rgba(255, 106, 0, 0.1) 0%, rgba(44, 49, 54, 0.9) 46%),
    var(--color-surface);
  box-shadow: var(--shadow);
}

.page-faq .faq-more-card::after {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 120px;
  height: 120px;
  border: 1px solid rgba(255, 106, 0, 0.3);
  transform: rotate(45deg);
}

.page-faq .faq-more-card h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-cream);
}

.page-faq .faq-more-card > p {
  margin: 0 0 16px;
  max-width: 560px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-soft);
}

.page-faq .faq-contact-list {
  margin: 0;
  padding: 0;
}

.page-faq .faq-contact-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--color-line);
}

.page-faq .faq-contact-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-text-dim);
}

.page-faq .faq-contact-row dd {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-cream);
}

.page-faq .faq-more-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-dim);
}

.page-faq .faq-more-note a {
  color: var(--color-terra);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 130, 85, 0.4);
}

/* ===== 桌面端 ===== */
@media (min-width: 960px) {
  .page-faq {
    padding-bottom: 96px;
  }

  .page-faq .faq-hero {
    padding: 64px 0 44px;
  }

  .page-faq .faq-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 400px;
    gap: 56px;
    align-items: end;
  }

  .page-faq .faq-hero-copy h1 {
    font-size: 46px;
  }

  .page-faq .faq-hero-copy .lead {
    margin-top: 18px;
    font-size: 17px;
  }

  .page-faq .faq-hero-stats {
    gap: 14px;
    margin-top: 0;
  }

  .page-faq .faq-stat {
    padding: 18px 16px 14px;
  }

  .page-faq .faq-stat-value {
    font-size: 30px;
  }

  .page-faq .faq-image-band {
    padding-top: 36px;
  }

  .page-faq .faq-top-frame {
    aspect-ratio: 4 / 1;
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 56px;
    margin-top: 56px;
  }

  .page-faq .faq-catalog-inner {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-catalog-list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-catalog-link {
    display: flex;
    width: 100%;
    white-space: normal;
    padding: 11px 12px;
    background: transparent;
    border: none;
    border-left: 2px solid var(--color-line);
    border-radius: 0;
  }

  .page-faq .faq-catalog-link:hover {
    background: rgba(255, 106, 0, 0.06);
    border-color: var(--color-orange);
    color: var(--color-cream);
  }

  .page-faq .faq-sections {
    margin-top: 0;
  }

  .page-faq .faq-section {
    margin-bottom: 36px;
    padding: 36px 34px 30px;
  }

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

  .page-faq .faq-item summary {
    padding: 17px 18px;
    font-size: 16px;
  }

  .page-faq .faq-item-body {
    padding: 16px 18px 18px;
    font-size: 16px;
  }

  .page-faq .faq-more-card {
    padding: 40px 44px;
  }

  .page-faq .faq-more-card h2 {
    font-size: 28px;
  }

  .page-faq .faq-contact-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 20px;
  }

  .page-faq .faq-contact-row {
    padding: 16px 0;
  }
}