/* FAQ 页面专属样式 */
.page-faq {
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 clamp(.875rem, 4vw, 2.5rem) var(--space-xl);
  font-family: var(--font-body);
  line-height: var(--line-height);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  padding: 1rem 0 .25rem;
  font-family: var(--font-number);
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--color-text-dim);
}
.page-faq .breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover {
  text-decoration: underline;
}

/* Hero 区 */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(2.25rem, 6vw, 4.5rem) 0 2rem;
}
.page-faq .faq-hero::before {
  content: '';
  position: absolute;
  inset: auto 0 0 auto;
  z-index: -1;
  width: 72%;
  height: 58%;
  background: linear-gradient(135deg,
    transparent 0 30%,
    rgba(57, 255, 20, .06) 30% 52%,
    transparent 52% 68%,
    rgba(255, 215, 0, .05) 68% 100%);
  pointer-events: none;
}
.page-faq .faq-kicker {
  margin: 0 0 .75rem;
  font-family: var(--font-number);
  font-size: .8125rem;
  letter-spacing: .18em;
  color: var(--color-live);
}
.page-faq .faq-hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-title);
  font-size: clamp(1.625rem, 4.5vw, 3.25rem);
  font-weight: 900;
  line-height: 1.15;
  border-left: 4px solid var(--color-accent);
  padding-left: .75rem;
}
.page-faq .faq-hero .hero-sub {
  color: var(--color-accent);
}
.page-faq .faq-hero p:last-child {
  margin: 0;
  max-width: 58ch;
  color: var(--color-text-dim);
  font-size: .9375rem;
}

/* 问题索引 */
.page-faq .faq-index {
  border-top: 2px solid var(--color-accent);
  padding-top: 1rem;
  margin-top: 1rem;
}
.page-faq .faq-index h2 {
  margin: 0 0 .75rem;
  font-family: var(--font-title);
  font-size: 1rem;
  letter-spacing: .05em;
}
.page-faq .faq-index ol {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding: 0 0 .5rem;
  margin: 0;
  list-style: none;
  scrollbar-width: none;
}
.page-faq .faq-index ol::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-index li {
  flex: 0 0 auto;
}
.page-faq .faq-index a {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  border: 1px solid var(--color-border);
  padding: .3rem .7rem;
  border-radius: 999px;
  font-family: var(--font-number);
  font-size: .8125rem;
  color: var(--color-text-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s, color .2s;
}
.page-faq .faq-index a:hover {
  border-color: var(--color-live);
  color: var(--color-text);
}
.page-faq .faq-index .faq-index-contact {
  margin-top: 1.25rem;
  padding: 1rem;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-cut);
}
.page-faq .faq-index-contact-label {
  margin: 0 0 .5rem;
  font-family: var(--font-number);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--color-accent);
}
.page-faq .faq-index-contact p {
  margin: .25rem 0;
  font-size: .875rem;
  color: var(--color-text-dim);
  word-break: break-all;
}
.page-faq .faq-index-contact .btn-ghost {
  margin-top: .75rem;
}

/* 主布局 */
.page-faq .faq-layout {
  display: grid;
  gap: 2rem;
}

/* 分组 */
.page-faq .faq-group {
  border-top: 1px solid var(--color-border);
  margin-top: 2rem;
  padding-top: 1.75rem;
}
.page-faq .faq-group:first-child {
  margin-top: 0;
  border-top: none;
  padding-top: .5rem;
}
.page-faq .faq-group-head {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  margin-bottom: 1rem;
}
.page-faq .faq-group-index {
  flex: 0 0 auto;
  margin-top: .2rem;
  border: 1px solid var(--color-accent);
  padding: .15rem .45rem;
  font-family: var(--font-number);
  font-size: .8125rem;
  font-weight: 700;
  color: var(--color-accent);
}
.page-faq .faq-group h2 {
  margin: 0 0 .3rem;
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 900;
}
.page-faq .faq-group-desc {
  margin: 0;
  color: var(--color-text-dim);
  font-size: .9375rem;
}

/* 图片容器 */
.page-faq .faq-figure {
  margin: 1.5rem 0;
  padding: .6rem;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-cut);
}
.page-faq .faq-figure img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 6px 1px 6px 1px;
}
.page-faq .faq-figure figcaption {
  margin-top: .6rem;
  font-family: var(--font-number);
  font-size: .75rem;
  color: var(--color-text-dim);
}

/* 手风琴折叠 */
.page-faq details {
  border-bottom: 1px solid var(--color-border);
}
.page-faq details[open] {
  background: linear-gradient(90deg, rgba(57, 255, 20, .05), transparent 70%);
}
.page-faq summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  padding: 1.1rem 0;
  list-style: none;
}
.page-faq summary::-webkit-details-marker {
  display: none;
}
.page-faq summary h3 {
  margin: 0;
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  transition: color .2s;
}
.page-faq summary:hover h3 {
  color: var(--color-accent);
}
.page-faq summary::after {
  content: '';
  flex: 0 0 auto;
  width: .55rem;
  height: .55rem;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(45deg);
  transition: transform .25s ease;
}
.page-faq details[open] summary::after {
  transform: rotate(225deg);
}
.page-faq .faq-answer {
  max-width: 68ch;
  padding: 0 0 1.3rem;
  color: var(--color-text-dim);
  font-size: .9375rem;
}
.page-faq .faq-answer p {
  margin: 0 0 .8rem;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}

/* 关键词高亮 */
.page-faq .key {
  color: var(--color-live);
  font-style: normal;
  font-weight: 700;
}

/* 联系卡片 */
.page-faq .faq-contact-card {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background:
    linear-gradient(135deg, rgba(255, 215, 0, .06), transparent 65%),
    var(--color-bg-panel);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-cut);
}
.page-faq .faq-contact-label {
  margin: 0 0 .75rem;
  font-family: var(--font-number);
  font-size: .75rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.page-faq .faq-contact-card ul {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
  color: var(--color-text-dim);
  font-size: .9375rem;
}
.page-faq .faq-contact-card li + li {
  margin-top: .35rem;
}
.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* 桌面端增强 */
@media (min-width: 900px) {
  .page-faq {
    padding-top: 1rem;
  }
  .page-faq .faq-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 24rem);
    align-items: end;
    gap: 2rem;
  }
  .page-faq .faq-hero::before {
    width: 48%;
    height: 72%;
  }
  .page-faq .faq-layout {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 1.5rem;
    border-top: none;
    border-left: 2px solid var(--color-accent);
    padding-top: 0;
    padding-left: 1.25rem;
    margin-top: 0;
  }
  .page-faq .faq-index ol {
    display: grid;
    gap: .5rem;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index li {
    flex: initial;
  }
  .page-faq .faq-index a {
    display: inline-flex;
    align-items: baseline;
    gap: .45rem;
    border: none;
    padding: 0;
    border-radius: 0;
    color: var(--color-text-dim);
    white-space: normal;
  }
  .page-faq .faq-index a::before {
    content: '';
    display: inline-block;
    width: .35rem;
    height: .35rem;
    background: var(--color-live);
    flex: 0 0 auto;
    transform: translateY(-1px);
  }
  .page-faq .faq-index a:hover {
    border-color: transparent;
    color: var(--color-accent);
  }
}

/* 减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .01ms !important;
  }
}