.page-faq {
  --faq-item-radius: var(--radius-m);
  --faq-card-radius: var(--radius-l);
  overflow-x: clip;
  padding-block: 24px 72px;
  color: var(--fg-strong);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-block: 6px 2px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
}

.page-faq .breadcrumb a {
  color: var(--fg-state);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  border-bottom-color: var(--cyan-soft);
}

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

/* 首屏 */
.page-faq .faq-hero {
  padding: 28px 0 36px;
  border-bottom: 1px solid var(--stroke);
}

.page-faq .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--fg-state);
}

.page-faq .faq-hero h1 {
  max-width: 22ch;
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 7.2vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
}

.page-faq .faq-lead {
  max-width: 62ch;
  margin: 0;
  color: var(--fg-muted);
}

.page-faq .faq-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero-meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-meta-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.35rem;
  color: var(--fg-state);
}

.page-faq .faq-meta-label {
  font-size: 0.875rem;
  color: var(--fg-muted);
}

/* 章节骨架 */
.page-faq .chapter {
  padding-top: 56px;
  border-top: 1px solid var(--stroke);
  margin-top: 44px;
}

.page-faq .chapter:first-of-type {
  margin-top: 32px;
}

.page-faq .chapter-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.page-faq .chapter-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--fg-state);
}

.page-faq .chapter-band {
  display: block;
  width: 44px;
  height: 4px;
  border-radius: 2px;
  background: var(--fg-state);
}

.page-faq .chapter--alt .chapter-band {
  background: var(--fg-action);
}

.page-faq .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.3rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-faq .faq-wave {
  flex: 0 0 auto;
  margin-left: auto;
  fill: var(--cyan);
  opacity: 0.7;
}

.page-faq .faq-intro {
  max-width: 62ch;
  margin: 16px 0 0;
  color: var(--fg-muted);
}

.page-faq .faq-inline-link {
  color: var(--fg-state);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--cyan-soft);
}

/* 问题索引 */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index-item a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 18px 18px 16px;
  background: var(--bg-panel);
  border: 1px solid var(--stroke);
  border-radius: var(--faq-card-radius);
  color: var(--fg-strong);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-index-item a:hover {
  border-color: var(--cyan-soft);
  transform: translateY(-2px);
}

.page-faq .faq-index-item a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-index-num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--fg-state);
}

.page-faq .faq-index-body {
  display: grid;
  gap: 10px;
  justify-items: start;
}

.page-faq .faq-index-text {
  font-weight: 600;
  line-height: 1.55;
}

/* 角标排版（颜色沿用共享语义色） */
.page-faq .badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  line-height: 1.6;
}

/* 折叠问答组 */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-item {
  background: var(--bg-panel);
  border: 1px solid var(--stroke);
  border-radius: var(--faq-item-radius);
  overflow: hidden;
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--cyan-soft);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:hover .faq-q-text {
  color: var(--cyan-soft);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-q-num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--fg-state);
}

.page-faq .faq-q-text {
  font-weight: 600;
  line-height: 1.55;
  transition: color 0.2s var(--ease);
}

.page-faq .faq-arrow {
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 2px solid var(--fg-muted);
  border-bottom: 2px solid var(--fg-muted);
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-arrow {
  border-color: var(--fg-state);
  transform: rotate(-135deg);
}

.page-faq .faq-a {
  padding: 0 18px 18px;
  color: var(--fg-muted);
}

.page-faq .faq-a p {
  max-width: 68ch;
  margin: 0;
}

.page-faq .faq-a p + p {
  margin-top: 10px;
}

/* 图文与分栏 */
.page-faq .faq-split {
  display: grid;
  gap: 24px;
}

.page-faq figure {
  margin: 0;
}

.page-faq .faq-figure {
  margin-top: 26px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--faq-card-radius);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--fg-muted);
}

/* 联系提示区 */
.page-faq .faq-help-card {
  margin-top: 26px;
  padding: clamp(22px, 5vw, 48px);
  background: var(--bg-panel);
  border: 1px solid var(--stroke);
  border-radius: var(--faq-card-radius);
}

.page-faq .faq-help-lead {
  max-width: 60ch;
  margin: 0 0 28px;
}

.page-faq .faq-contact-list {
  display: grid;
  gap: 18px;
  margin: 0 0 32px;
}

.page-faq .faq-contact-item {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 3px solid var(--stroke);
}

.page-faq .faq-contact-item dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
}

.page-faq .faq-contact-item dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.05rem;
  color: var(--fg-strong);
  overflow-wrap: anywhere;
}

.page-faq .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .btn-primary {
  background: var(--fg-action);
  border: 1px solid var(--fg-action);
  color: var(--ink);
}

.page-faq .btn-primary:hover,
.page-faq .btn-primary:focus-visible {
  background: transparent;
  color: var(--fg-action);
}

.page-faq .faq-top {
  display: inline-flex;
  margin-top: 40px;
  padding-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--fg-state);
  text-decoration: none;
  border-bottom: 1px solid var(--stroke);
}

.page-faq .faq-top:hover,
.page-faq .faq-top:focus-visible {
  border-bottom-color: var(--cyan-soft);
  color: var(--cyan-soft);
}

.page-faq a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

@media (max-width: 479px) {
  .page-faq .faq-wave {
    display: none;
  }

  .page-faq .faq-q-num,
  .page-faq .faq-index-num {
    display: none;
  }

  .page-faq .faq-item summary {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-faq .faq-index-item a {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 640px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hero-meta {
    gap: 16px 40px;
  }
}

@media (min-width: 1000px) {
  .page-faq {
    padding-block: 32px 96px;
  }

  .page-faq .chapter {
    padding-top: 72px;
    margin-top: 56px;
  }

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

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.72fr);
    align-items: start;
  }

  .page-faq .faq-figure--side {
    margin-top: 26px;
  }

  .page-faq .faq-contact-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-item a,
  .page-faq .faq-arrow,
  .page-faq .faq-q-text,
  .page-faq .faq-item,
  .page-faq .btn {
    transition: none;
  }

  .page-faq .faq-index-item a:hover {
    transform: none;
  }
}