.page-faq {
  --faq-space: var(--color-space);
  --faq-violet: var(--color-violet);
  --faq-violet-bright: var(--color-violet-bright);
  --faq-orange: var(--color-orange);
  --faq-neon: var(--color-neon);
  --faq-dusk: var(--color-dusk);
  --faq-mist: var(--color-mist);
  --faq-ash: var(--color-ash);
  --faq-line: var(--color-line);
  position: relative;
  padding: 24px 0 96px;
  overflow-x: clip;
  color: var(--faq-mist);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 12% 18%, rgba(123, 47, 190, 0.14), transparent 34%),
    radial-gradient(circle at 88% 74%, rgba(255, 107, 0, 0.08), transparent 28%),
    var(--faq-space);
}

.page-faq .container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: 20px;
  box-sizing: border-box;
}

/* 面包屑 */
.page-faq .faq-context {
  padding: 8px 0 0;
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--faq-ash);
}

.page-faq .breadcrumb a {
  color: var(--faq-ash);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

.page-faq .breadcrumb-sep {
  color: var(--faq-violet);
}

.page-faq .breadcrumb-current {
  color: var(--faq-mist);
  font-weight: 600;
}

/* Hero */
.page-faq .faq-hero {
  margin: 16px 0 44px;
}

.page-faq .faq-hero-inner {
  position: relative;
  display: grid;
  gap: 28px;
  align-items: center;
  padding: 32px 20px;
  background:
    linear-gradient(135deg, rgba(123, 47, 190, 0.28), rgba(11, 16, 38, 0.92)),
    var(--faq-space);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-faq .faq-hero-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(120deg, transparent 42%, rgba(123, 47, 190, 0.5) 42.2%, transparent 42.6%),
    radial-gradient(circle at 82% 18%, rgba(57, 255, 20, 0.12), transparent 32%);
}

.page-faq .faq-hero-inner::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 58%;
  height: 4px;
  background: linear-gradient(90deg, var(--faq-violet), var(--faq-orange));
  border-radius: 0 4px 4px 0;
}

.page-faq .faq-hero-copy {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  background: rgba(26, 31, 61, 0.75);
  border: 1px solid rgba(57, 255, 20, 0.35);
  color: var(--faq-neon);
}

.page-faq .faq-hero h1 {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--faq-mist);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 0.95;
  letter-spacing: 0.01em;
}

.page-faq .faq-hero-lead {
  margin: 0 0 16px;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.7;
  color: var(--faq-ash);
}

.page-faq .faq-hero-lead a,
.page-faq .faq-hero-hint a {
  color: var(--faq-orange);
  text-decoration: none;
}

.page-faq .faq-hero-lead a:hover,
.page-faq .faq-hero-hint a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-hero-hint {
  margin: 0;
  font-size: 14px;
  color: var(--faq-ash);
}

.page-faq .faq-hero-visual {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid rgba(123, 47, 190, 0.45);
  box-shadow: var(--shadow-float);
  object-fit: cover;
}

.page-faq .faq-hero-visual-tag {
  position: absolute;
  right: -8px;
  bottom: -14px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(11, 16, 38, 0.92);
  border: 1px solid var(--faq-line);
  border-radius: 14px;
  box-shadow: var(--shadow-float);
}

.page-faq .faq-hero-visual-num {
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  color: var(--faq-neon);
}

.page-faq .faq-hero-visual-label {
  font-size: 12px;
  line-height: 1.45;
  color: var(--faq-ash);
}

/* 问答布局 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

.page-faq .faq-index-inner {
  padding: 22px 20px;
  background:
    linear-gradient(180deg, rgba(123, 47, 190, 0.12), rgba(26, 31, 61, 0.72)),
    var(--faq-dusk);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--faq-violet);
  border-radius: var(--radius-md);
}

.page-faq .faq-index h2,
.page-faq .faq-group-head h2,
.page-faq .faq-cta h2 {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--faq-mist);
  line-height: 1.1;
}

.page-faq .faq-index h2 {
  margin: 0 0 16px;
  font-size: 1.15rem;
  color: var(--faq-neon);
  letter-spacing: 0.02em;
}

.page-faq .faq-index-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--faq-ash);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 10px;
  transition: background var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.page-faq .faq-index-link span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faq-neon);
  opacity: 0.85;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  background: rgba(123, 47, 190, 0.18);
  border-color: rgba(123, 47, 190, 0.5);
  color: var(--faq-mist);
}

.page-faq .faq-index-stats {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .faq-index-stats-num {
  font-family: var(--font-mono);
  font-size: 1.65rem;
  line-height: 1;
  color: var(--faq-neon);
}

.page-faq .faq-index-stats-label {
  font-size: 12px;
  color: var(--faq-ash);
}

/* 问答分组 */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: 52px;
  scroll-margin-top: 24px;
}

.page-faq .faq-group-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group-num {
  flex: 0 0 auto;
  margin-top: 4px;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  color: var(--faq-orange);
  background: rgba(255, 107, 0, 0.1);
  border: 1px solid rgba(255, 107, 0, 0.4);
  border-radius: 8px;
}

.page-faq .faq-group-title-block h2 {
  margin: 0 0 4px;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
}

.page-faq .faq-group-title-block p {
  margin: 0;
  font-size: 14px;
  color: var(--faq-ash);
}

/* 手风琴卡片 */
.page-faq .faq-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-item {
  background:
    linear-gradient(90deg, rgba(123, 47, 190, 0.08), transparent 26%),
    var(--faq-dusk);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.page-faq .faq-item:hover {
  border-color: rgba(123, 47, 190, 0.6);
  box-shadow: 0 8px 24px rgba(11, 16, 38, 0.4);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-violet);
  background:
    linear-gradient(135deg, rgba(123, 47, 190, 0.18), rgba(26, 31, 61, 0.9) 50%),
    var(--faq-dusk);
}

.page-faq .faq-item summary {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--faq-mist);
  list-style: none;
  cursor: pointer;
  transition: color var(--transition-base);
}

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

.page-faq .faq-item summary::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--faq-violet-bright);
  box-shadow: 0 0 10px rgba(123, 47, 190, 0.8);
}

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--faq-orange);
  transition: transform var(--transition-base);
}

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

.page-faq .faq-item summary:hover {
  color: #fff;
}

.page-faq .faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s ease;
}

.page-faq .faq-item[open] .faq-answer {
  grid-template-rows: 1fr;
}

.page-faq .faq-answer > p {
  min-height: 0;
  overflow: hidden;
  box-sizing: border-box;
  margin: 0;
  padding: 0 20px 0 38px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--faq-ash);
}

.page-faq .faq-answer a {
  color: var(--faq-orange);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-base);
}

.page-faq .faq-answer a:hover {
  color: #fff;
}

/* 数据图专区 */
.page-faq .faq-data-block {
  display: grid;
  gap: 20px;
}

.page-faq .faq-figure {
  margin: 0;
  overflow: hidden;
  background: var(--faq-dusk);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 200px;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faq-ash);
  border-top: 1px solid var(--faq-line);
}

/* 尾部 CTA */
.page-faq .faq-cta {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px;
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(123, 47, 190, 0.3), rgba(11, 16, 38, 0.85) 46%),
    var(--faq-space);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
}

.page-faq .faq-cta::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -60px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(57, 255, 20, 0.18), transparent 65%);
  pointer-events: none;
}

.page-faq .faq-cta-copy {
  position: relative;
  z-index: 1;
}

.page-faq .faq-cta-copy h2 {
  margin: 0 0 6px;
  font-size: 1.6rem;
}

.page-faq .faq-cta-copy p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--faq-ash);
}

.page-faq .faq-cta-copy a {
  color: var(--faq-orange);
  text-decoration: none;
}

.page-faq .faq-cta-copy a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .btn-orange {
  position: relative;
  z-index: 1;
  border-radius: 12px;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

/* 返回顶部 */
.page-faq .back-top {
  position: fixed;
  right: 24px;
  bottom: 28px;
  z-index: 60;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--faq-mist);
  background:
    linear-gradient(135deg, var(--faq-violet), var(--faq-space));
  border: 1px solid rgba(255, 107, 0, 0.35);
  border-radius: 12px;
  box-shadow: var(--shadow-float);
  text-decoration: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

.page-faq .back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* 平板 / 桌面断点 */
@media (min-width: 800px) {
  .page-faq .faq-data-block {
    grid-template-columns: 1fr 260px;
    align-items: center;
  }

  .page-faq .faq-hero-inner {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    padding: 44px 32px;
  }

  .page-faq .faq-hero-visual img {
    transform: rotate(-1.5deg) scale(1.02);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 220px 1fr;
    gap: 48px;
  }

  .page-faq .faq-index-inner {
    position: sticky;
    top: 28px;
  }

  .page-faq .faq-hero-inner {
    padding: 56px 64px;
  }

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

  .page-faq .faq-cta {
    padding: 34px 38px;
  }
}