/* ========================================
   FAQ 页面专属样式 · 作用域 .page-faq
   ======================================== */

.page-faq {
  --faq-accent: var(--color-gold);
  --faq-card-bg: rgba(18, 52, 89, 0.72);
  --faq-gold-soft: rgba(201, 162, 39, 0.14);
  --faq-grape-soft: rgba(168, 123, 224, 0.12);
  --faq-border-glow: rgba(168, 123, 224, 0.35);
  background-image:
    radial-gradient(ellipse 55% 35% at 88% 8%, rgba(168, 123, 224, 0.08), transparent 65%),
    radial-gradient(ellipse 45% 28% at 8% 32%, rgba(201, 162, 39, 0.05), transparent 60%);
}

/* ---------- 分区主色 ---------- */
.page-faq .faq-section--directory { --faq-accent: var(--color-gold); }
.page-faq .faq-section--download { --faq-accent: var(--color-grape); }
.page-faq .faq-section--service { --faq-accent: var(--color-vine); }
.page-faq .faq-section--records { --faq-accent: var(--color-sunset); }
.page-faq .faq-section--others { --faq-accent: var(--color-champagne); }

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  padding: 2.25rem 0 0;
}

.page-faq .breadcrumbs ol {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: var(--text-sm);
}

.page-faq .breadcrumbs a {
  color: var(--color-cloud);
  text-decoration: none;
  transition: color var(--duration) var(--ease-out);
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--color-gold);
}

.page-faq .breadcrumbs-sep {
  color: var(--color-stone);
}

.page-faq .breadcrumbs-current {
  color: var(--color-grape);
  font-weight: 700;
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.page-faq .faq-kicker {
  display: inline-block;
  font-family: var(--font-data);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gold);
  border: 1px solid rgba(201, 162, 39, 0.3);
  border-radius: var(--radius-full);
  padding: 0.375rem 0.875rem;
  margin-bottom: 1.25rem;
  background: var(--faq-gold-soft);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  line-height: 1.18;
  margin: 0 0 1rem;
  color: var(--color-cloud);
  max-width: 17em;
}

.page-faq .faq-hero-lead {
  color: var(--color-cloud);
  opacity: 0.85;
  line-height: 1.75;
  max-width: 62ch;
  margin-bottom: 1.5rem;
}

.page-faq .faq-quick-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.page-faq .faq-quick-chips a {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--color-stone);
  border-radius: var(--radius-full);
  color: var(--color-cloud);
  text-decoration: none;
  font-size: var(--text-sm);
  transition:
    border-color var(--duration) var(--ease-out),
    color var(--duration) var(--ease-out),
    transform var(--duration) var(--ease-out);
}

.page-faq .faq-quick-chips a::before {
  content: "";
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 50%;
  background: var(--color-grape);
  flex-shrink: 0;
}

.page-faq .faq-quick-chips a:hover,
.page-faq .faq-quick-chips a:focus-visible {
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: translateY(-2px);
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.875rem;
  align-content: center;
}

.page-faq .faq-hero-stat {
  background: rgba(18, 52, 89, 0.65);
  border: 1px solid var(--color-stone);
  border-radius: var(--radius-md);
  padding: 1.125rem 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero-stat::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-grape), transparent);
  opacity: 0.7;
}

.page-faq .faq-hero-stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1.2;
}

.page-faq .faq-hero-stat-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-cloud);
  opacity: 0.78;
  margin-top: 0.25rem;
}

.page-faq .faq-hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-stone);
}

.page-faq .faq-hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 30, 58, 0.35), transparent 35%, transparent 70%, rgba(168, 123, 224, 0.18));
  pointer-events: none;
  border-radius: inherit;
}

.page-faq .faq-hero-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout-wrap {
  padding: 3rem 0 1rem;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

/* ---------- 侧边栏 ---------- */
.page-faq .faq-sidebar-inner {
  background: var(--color-graphite);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid rgba(58, 90, 140, 0.5);
}

.page-faq .faq-sidebar-title {
  font-family: var(--font-data);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 0 0 1rem;
}

.page-faq .faq-sidebar-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .faq-sidebar-nav a {
  display: block;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--color-cloud);
  text-decoration: none;
  border: 1px solid rgba(58, 90, 140, 0.6);
  transition:
    border-color var(--duration) var(--ease-out),
    color var(--duration) var(--ease-out),
    background-color var(--duration) var(--ease-out);
}

.page-faq .faq-sidebar-nav a:hover,
.page-faq .faq-sidebar-nav a:focus-visible {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background: var(--faq-gold-soft);
}

.page-faq .faq-sidebar-figure {
  display: none;
  margin: 1.5rem 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-stone);
}

.page-faq .faq-sidebar-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-sidebar-contact {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-top: 1.5rem;
  padding: 1rem;
  padding-left: 1.25rem;
  background: var(--faq-grape-soft);
  border-left: 3px solid var(--color-grape);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  text-decoration: none;
}

.page-faq .faq-sidebar-contact-label {
  font-size: var(--text-sm);
  color: var(--color-stone);
}

.page-faq .faq-sidebar-contact-value {
  font-weight: 700;
  color: var(--color-grape);
  transition: color var(--duration) var(--ease-out);
}

.page-faq .faq-sidebar-contact:hover .faq-sidebar-contact-value,
.page-faq .faq-sidebar-contact:focus-visible .faq-sidebar-contact-value {
  color: var(--color-gold);
}

/* ---------- FAQ 内容区 ---------- */
.page-faq .faq-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 1.25rem);
}

.page-faq .faq-section-heading {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 0.5rem;
}

.page-faq .faq-section-index {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  font-family: var(--font-data);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--faq-accent);
  border: 1px solid var(--faq-accent);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.02);
}

.page-faq .faq-section-heading h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  color: var(--color-cloud);
  margin: 0;
  transition: color var(--duration) var(--ease-out);
}

.page-faq .faq-section-intro {
  color: var(--color-stone);
  font-size: var(--text-sm);
  margin: 0 0 1.25rem;
  padding-left: calc(2.75rem + 0.875rem);
  line-height: 1.65;
}

.page-faq .faq-section:target .faq-section-heading h2 {
  color: var(--faq-accent);
  text-decoration: underline;
  text-decoration-color: var(--faq-accent);
  text-underline-offset: 0.3em;
  text-decoration-thickness: 2px;
}

/* ---------- 单个问答条目 ---------- */
.page-faq .faq-item {
  background: var(--faq-card-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-stone);
  margin-bottom: 0.875rem;
  overflow: hidden;
  transition:
    border-color var(--duration) var(--ease-out),
    box-shadow var(--duration) var(--ease-out);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-border-glow);
  box-shadow: 0 0.5rem 2rem rgba(11, 30, 58, 0.4);
}

.page-faq .faq-item-summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1.125rem 1.25rem;
  cursor: pointer;
  user-select: none;
  transition: background-color var(--duration) var(--ease-out);
}

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

.page-faq .faq-item-summary:hover,
.page-faq .faq-item-summary:focus-visible {
  background: rgba(255, 255, 255, 0.03);
}

.page-faq .faq-q-num {
  flex: 0 0 auto;
  width: 1.75rem;
  height: 1.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold), #d9b84a);
  color: var(--color-deep-blue);
  font-family: var(--font-data);
  font-size: var(--text-sm);
  font-weight: 700;
}

.page-faq .faq-q-text {
  flex: 1 1 auto;
  color: var(--color-cloud);
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .faq-q-icon {
  flex: 0 0 auto;
  width: 0.625rem;
  height: 0.625rem;
  border-right: 2px solid var(--color-grape);
  border-bottom: 2px solid var(--color-grape);
  transform: rotate(45deg);
  transition:
    transform var(--duration) var(--ease-out),
    border-color var(--duration) var(--ease-out);
  margin-right: 0.25rem;
}

.page-faq .faq-item[open] .faq-q-icon {
  transform: rotate(-135deg);
  border-color: var(--color-gold);
}

@keyframes pageFaqVineIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-answer {
  position: relative;
  padding: 0 1.25rem 1.25rem 3.875rem;
}

.page-faq .faq-answer::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--color-gold), var(--color-grape));
  opacity: 0;
  transform: scaleY(0.4);
  transform-origin: top;
  transition:
    opacity 0.35s var(--ease-out),
    transform 0.35s var(--ease-out);
}

.page-faq .faq-item[open] .faq-answer::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-faq .faq-item[open] .faq-answer {
  animation: pageFaqVineIn 0.3s var(--ease-out);
}

.page-faq .faq-answer p {
  color: var(--color-cloud);
  opacity: 0.88;
  line-height: 1.75;
  margin: 0 0 0.875rem;
  max-width: 68ch;
}

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

/* ---------- 12 分类列表 ---------- */
.page-faq .faq-cat-list {
  list-style: none;
  margin: 0.875rem 0 1rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.page-faq .faq-cat-list li {
  position: relative;
  padding-left: 1.125rem;
  font-size: var(--text-sm);
  color: var(--color-cloud);
  opacity: 0.88;
  line-height: 1.5;
}

.page-faq .faq-cat-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.625rem;
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 50%;
  background: var(--color-grape);
}

/* ---------- 卡片底部反馈 ---------- */
.page-faq .faq-card-footer {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 0.875rem;
  border-top: 1px dashed var(--color-stone);
  font-size: var(--text-sm);
  color: var(--color-stone);
  line-height: 1.6;
}

.page-faq .faq-card-footer a {
  color: var(--color-grape);
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}

.page-faq .faq-card-footer a:hover,
.page-faq .faq-card-footer a:focus-visible {
  color: var(--color-gold);
  text-decoration: underline;
}

.page-faq .faq-feedback-dot {
  flex: 0 0 auto;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-vine);
  box-shadow: 0 0 0 3px rgba(107, 180, 169, 0.15);
  margin-top: 0.4rem;
}

/* ---------- 底部联系卡片 ---------- */
.page-faq .faq-contact-hub {
  background: linear-gradient(135deg, var(--color-midnight), rgba(168, 123, 224, 0.14)), var(--color-midnight);
  border-radius: var(--radius-lg);
  padding: 2.5rem 1.5rem;
  margin-bottom: 4rem;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(58, 90, 140, 0.55);
}

.page-faq .faq-contact-hub::before {
  content: "";
  position: absolute;
  top: -2rem;
  right: -1rem;
  width: 14rem;
  height: 14rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 39, 0.16), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-contact-hub::after {
  content: "";
  position: absolute;
  bottom: -3rem;
  left: -2rem;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168, 123, 224, 0.14), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-contact-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-faq .faq-contact-grid h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  margin: 0 0 0.75rem;
  color: var(--color-cloud);
}

.page-faq .faq-contact-grid p {
  color: var(--color-cloud);
  opacity: 0.85;
  line-height: 1.7;
  margin: 0;
  max-width: 58ch;
}

.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  align-items: center;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-sidebar-nav {
    flex-direction: column;
    gap: 0.375rem;
  }

  .page-faq .faq-sidebar-nav a {
    position: relative;
    padding: 0.625rem 0.875rem 0.625rem 1.125rem;
    border: none;
    border-left: 2px solid var(--color-stone);
    border-radius: 0;
  }

  .page-faq .faq-sidebar-nav a:hover,
  .page-faq .faq-sidebar-nav a:focus-visible {
    border-left-color: var(--color-gold);
    background: transparent;
  }

  .page-faq .faq-cat-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 2rem;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 992px) {
  .page-faq .faq-layout {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 3rem;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-faq .faq-sidebar-figure {
    display: block;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
    gap: 3rem;
  }

  .page-faq .faq-content {
    gap: 2.5rem;
  }
}