.page-faq {
  --faq-rail-w: 232px;
  --faq-r: 14px;
  background: var(--ink-900);
}

/* 面包屑 */
.page-faq .faq-crumbs {
  padding-top: 22px;
}
.page-faq .faq-crumbs .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--muted);
}
.page-faq .faq-crumbs .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--ink-500);
}
.page-faq .faq-crumbs .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}
.page-faq .faq-crumbs .breadcrumbs a:hover,
.page-faq .faq-crumbs .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  margin-top: 14px;
  padding: 34px 0 48px;
  border-top: 1px solid var(--ink-600);
  border-bottom: 1px solid var(--ink-600);
  background:
    radial-gradient(circle at 84% 8%, rgba(51, 242, 212, .16), transparent 56%),
    radial-gradient(circle at 6% 96%, rgba(255, 168, 58, .1), transparent 52%),
    linear-gradient(180deg, var(--ink-850), var(--ink-900));
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ink-600) 1px, transparent 1px),
    linear-gradient(90deg, var(--ink-600) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: .26;
  pointer-events: none;
}
.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
}
.page-faq .faq-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.24;
  letter-spacing: -.02em;
  color: var(--text);
  max-width: 20ch;
}
.page-faq .faq-lede {
  margin: 16px 0 0;
  max-width: 60ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: #C3CDEA;
}
.page-faq .faq-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

/* 主体布局 */
.page-faq .faq-layout {
  display: grid;
  gap: 30px;
  padding-top: 34px;
  padding-bottom: 64px;
}
.page-faq .faq-body {
  min-width: 0;
}

/* 左侧分类索引 */
.page-faq .faq-rail {
  padding: 16px 14px;
  border: 1px solid var(--ink-600);
  border-radius: var(--faq-r);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-850));
}
.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted);
}
.page-faq .faq-rail-list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-faq .faq-rail-list li {
  flex: 0 0 auto;
}
.page-faq .faq-rail-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease);
}
.page-faq .faq-rail-list a:hover {
  color: var(--text);
  border-color: var(--cyan-line);
  background: var(--cyan-soft);
}
.page-faq .faq-rail-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--cyan);
}
.page-faq .faq-rail-help {
  margin-top: 16px;
  padding: 14px 14px 16px;
  border: 1px solid var(--ink-600);
  border-radius: 10px;
  background: rgba(30, 42, 86, .55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.page-faq .faq-rail-help p {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--muted);
}
.page-faq .faq-rail-help a {
  display: inline-block;
  min-height: 32px;
  font-size: 14px;
  font-weight: 700;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid var(--amber-line);
}
.page-faq .faq-rail-help a:hover {
  color: var(--white);
}

/* 章节 */
.page-faq .faq-section {
  padding-top: 34px;
  border-top: 1px solid var(--ink-600);
  scroll-margin-top: calc(var(--header-h) + 24px);
}
.page-faq .faq-section:first-child {
  padding-top: 0;
  border-top: 0;
}
.page-faq .faq-section + .faq-section {
  margin-top: 40px;
}
.page-faq .faq-section-num {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}
.page-faq .faq-section-head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -.015em;
  color: var(--text);
}
.page-faq .faq-section-sub {
  margin: 10px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 上手章节：竖图 + 步骤 */
.page-faq .faq-intro-grid {
  display: grid;
  gap: 20px;
  margin-top: 24px;
}
.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--ink-600);
  border-radius: var(--faq-r);
  overflow: hidden;
  background: var(--ink-800);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
}
.page-faq .faq-figure figcaption {
  padding: 12px 14px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  border-top: 1px solid var(--ink-600);
}
.page-faq .faq-media-frame {
  aspect-ratio: 3 / 4;
}
.page-faq .faq-media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-faq .faq-figure-wide {
  margin-top: 24px;
}
.page-faq .faq-figure-wide .media-frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
}
.page-faq .faq-figure-wide .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .steps {
  counter-reset: faqstep;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.page-faq .steps li {
  position: relative;
  padding: 16px 18px 16px 68px;
  border: 1px solid var(--ink-600);
  border-left: 2px solid var(--cyan);
  border-radius: 10px;
  background: linear-gradient(180deg, var(--ink-800), var(--ink-850));
}
.page-faq .steps li::before {
  counter-increment: faqstep;
  content: "0" counter(faqstep);
  position: absolute;
  left: 20px;
  top: 16px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  color: var(--cyan);
}
.page-faq .step-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}
.page-faq .steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* 步骤连线图 */
.page-faq .faq-diagram {
  margin-top: 22px;
  padding: 16px;
  border: 1px dashed var(--ink-600);
  border-radius: var(--faq-r);
  background: rgba(30, 42, 86, .3);
  overflow-x: auto;
}
.page-faq .faq-diagram svg {
  display: block;
  width: 100%;
  min-width: 620px;
  height: auto;
}

/* 指标卡 */
.page-faq .metric-cards {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}
.page-faq .metric-card {
  padding: 18px;
  border: 1px solid var(--ink-600);
  border-radius: var(--faq-r);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-850));
}
.page-faq .metric-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  color: var(--text);
}
.page-faq .metric-tag {
  margin: 6px 0 0;
  display: inline-block;
  padding: 2px 9px;
  border: 1px solid var(--cyan-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--cyan);
  background: var(--cyan-soft);
}
.page-faq .metric-text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 名单条带 */
.page-faq .lineup-strip {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}
.page-faq .lineup-block {
  padding: 18px;
  border: 1px solid var(--ink-600);
  border-radius: var(--faq-r);
  background: var(--ink-800);
}
.page-faq .lineup-time {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0;
}
.page-faq .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 34px;
  line-height: 1;
  color: var(--cyan);
}
.page-faq .lineup-unit {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--amber);
}
.page-faq .lineup-text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 测试模块提示 */
.page-faq .test-note {
  display: grid;
  gap: 12px;
  margin-top: 24px;
  padding: 18px;
  border: 1px solid var(--red);
  border-left: 3px solid var(--red);
  border-radius: 10px;
  background: var(--red-soft);
}
.page-faq .test-note .chip {
  justify-self: start;
}
.page-faq .test-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: #E3C9CE;
}

/* 票务卡 */
.page-faq .ticket-grid {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}
.page-faq .ticket-card {
  padding: 18px;
  border: 1px solid var(--ink-600);
  border-radius: var(--faq-r);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-850));
}
.page-faq .ticket-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--amber);
}
.page-faq .ticket-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 问答 */
.page-faq .faq-qa {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}
.page-faq .faq-item {
  border: 1px solid var(--ink-600);
  border-radius: 10px;
  background: var(--ink-850);
  overflow: hidden;
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}
.page-faq .faq-item[open] {
  border-color: var(--amber-line);
  background: var(--ink-800);
}
.page-faq .faq-item > summary {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 44px;
  padding: 15px 18px 15px 24px;
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  bottom: 11px;
  width: 3px;
  border-radius: 3px;
  background: var(--amber);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .25s var(--ease);
}
.page-faq .faq-item[open] > summary::before {
  transform: scaleY(1);
}
.page-faq .faq-q {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.65;
  color: var(--text);
}
.page-faq .faq-caret {
  position: relative;
  flex: 0 0 auto;
  margin-left: auto;
  width: 22px;
  height: 22px;
  border: 1px solid var(--ink-600);
  border-radius: 6px;
}
.page-faq .faq-caret::before,
.page-faq .faq-caret::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--cyan);
}
.page-faq .faq-caret::before {
  width: 10px;
  height: 2px;
}
.page-faq .faq-caret::after {
  width: 2px;
  height: 10px;
  transition: transform .25s var(--ease), opacity .25s var(--ease);
}
.page-faq .faq-item[open] .faq-caret::after {
  transform: scaleY(0);
  opacity: 0;
}
.page-faq .faq-a {
  padding: 0 20px 18px 24px;
  border-top: 1px solid var(--ink-600);
  padding-top: 14px;
}
.page-faq .faq-a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}
.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}
.page-faq .faq-a a:hover {
  color: var(--white);
}

/* 收尾 */
.page-faq .faq-cta {
  display: grid;
  gap: 20px;
  margin-top: 44px;
  padding: 24px 20px;
  border: 1px solid var(--amber-line);
  border-radius: var(--faq-r);
  background:
    radial-gradient(circle at 92% 0%, rgba(255, 168, 58, .14), transparent 58%),
    linear-gradient(140deg, var(--ink-800), var(--ink-850));
}
.page-faq .faq-cta h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--text);
}
.page-faq .faq-cta p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}
.page-faq .faq-cta p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}
.page-faq .faq-cta p a:hover {
  color: var(--white);
}
.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.page-faq .faq-top-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px dashed var(--ink-500);
}
.page-faq .faq-top-link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan-line);
}

/* 平板 */
@media (min-width: 640px) {
  .page-faq .faq-title {
    font-size: 38px;
  }
  .page-faq .metric-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .lineup-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .ticket-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-cta {
    padding: 30px 28px;
  }
}

/* 桌面：左轴 + 内容双栏 */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 52px 0 66px;
  }
  .page-faq .faq-title {
    font-size: 52px;
    max-width: 18ch;
  }
  .page-faq .faq-lede {
    font-size: 17px;
  }
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 52px;
    padding-top: 46px;
    padding-bottom: 96px;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    align-self: start;
    padding: 20px 18px;
  }
  .page-faq .faq-rail-list {
    display: grid;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-rail-list a {
    white-space: normal;
    line-height: 1.5;
  }
  .page-faq .faq-intro-grid {
    grid-template-columns: 292px minmax(0, 1fr);
    align-items: start;
    gap: 26px;
  }
  .page-faq .faq-section + .faq-section {
    margin-top: 56px;
  }
  .page-faq .faq-section-head h2 {
    font-size: 32px;
  }
  .page-faq .metric-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .ticket-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
    padding: 34px 32px;
  }
  .page-faq .faq-cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-title {
    font-size: 56px;
  }
  .page-faq .faq-section-head h2 {
    font-size: 34px;
  }
}

/* 动效降级 */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail-list a,
  .page-faq .faq-item,
  .page-faq .faq-item > summary::before,
  .page-faq .faq-caret::after {
    transition: none;
  }
  .page-faq .faq-item > summary::before {
    transform: scaleY(1);
  }
}