.page-faq {
  --faq-sticky: calc(var(--header-h) + 28px);
  --faq-shade: rgba(11, 31, 58, 0.06);
  background: var(--cream);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .page-faq__hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-deep);
  color: var(--white);
  padding: calc(var(--header-h) + 48px) 0 64px;
}

.page-faq .page-faq__hero::after {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  bottom: -46%;
  height: 78%;
  background:
    linear-gradient(115deg,
      transparent 42%,
      rgba(255, 106, 19, 0.16) 42%,
      rgba(255, 106, 19, 0.16) 52%,
      transparent 52%);
  pointer-events: none;
}

.page-faq .page-faq__hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .page-faq__crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.page-faq .page-faq__crumbs a {
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.page-faq .page-faq__crumbs a:hover {
  border-bottom-color: var(--orange);
}

.page-faq .page-faq__hero-grid {
  display: grid;
  gap: 36px;
}

.page-faq .page-faq__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .page-faq__h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-faq .page-faq__lede {
  margin: 0 0 26px;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .page-faq__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .page-faq__facts {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 2px solid var(--orange);
}

.page-faq .page-faq__fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(216, 227, 244, 0.18);
}

.page-faq .page-faq__fact dt {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.page-faq .page-faq__fact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  text-align: right;
}

/* ---------- 主体框架 ---------- */
.page-faq .page-faq__shell {
  display: grid;
  gap: 36px;
  padding: 48px 0 88px;
}

.page-faq .page-faq__index {
  min-width: 0;
}

.page-faq .page-faq__index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange-deep);
}

.page-faq .page-faq__index-list {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.page-faq .page-faq__index-link {
  display: flex;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
  padding: 9px 13px;
  border-left: 3px solid transparent;
  border-radius: var(--radius-s);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.page-faq .page-faq__index-link:hover,
.page-faq .page-faq__index-link:focus-visible {
  background: var(--white);
  border-left-color: var(--orange);
  color: var(--ink-deep);
}

.page-faq .page-faq__index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--orange-deep);
}

/* ---------- 章节 ---------- */
.page-faq .page-faq__section {
  padding-bottom: 48px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--paper-line);
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .page-faq__section:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-faq .page-faq__section:target .chapter-title {
  background-image: linear-gradient(transparent 64%, rgba(255, 106, 19, 0.3) 64%);
}

.page-faq .page-faq__section .chapter-claim {
  max-width: 62ch;
}

.page-faq .page-faq__body {
  margin: 24px 0 0;
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .page-faq__body--tight {
  margin-top: 22px;
}

/* ---------- 目录板块 ---------- */
.page-faq .page-faq__tree {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.page-faq .page-faq__tree-item {
  position: relative;
  padding: 22px 22px 24px;
  background: var(--white);
  border-radius: var(--radius-m);
  border-top: 4px solid var(--orange);
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .page-faq__tree-item--b { border-top-color: var(--neon); }
.page-faq .page-faq__tree-item--c { border-top-color: var(--ink-mid); }
.page-faq .page-faq__tree-item--d { border-top-color: var(--orange-deep); }

.page-faq .page-faq__tree-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-float);
}

.page-faq .page-faq__tree-name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  color: var(--ink-deep);
}

.page-faq .page-faq__tree-text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

.page-faq .page-faq__link {
  font-size: 14px;
  font-weight: 700;
  color: var(--orange-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .page-faq__link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange-deep);
}

.page-faq .page-faq__link--light {
  color: var(--neon);
  border-bottom-color: rgba(124, 226, 60, 0.5);
}

.page-faq .page-faq__link--light:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

/* ---------- 图片 ---------- */
.page-faq .page-faq__figure {
  margin: 32px 0 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--ink-mid);
}

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

.page-faq .page-faq__figure .media__caption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
  background: var(--ink-deep);
}

/* ---------- 问答 ---------- */
.page-faq .page-faq__qa {
  margin-top: 28px;
}

.page-faq .page-faq__group-title {
  margin: 0 0 6px;
  padding-left: 12px;
  border-left: 4px solid var(--orange);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--ink-deep);
}

.page-faq .page-faq__group-title:not(:first-child) {
  margin-top: 34px;
}

.page-faq .page-faq__qa .accordion__item,
.page-faq .page-faq__acc-account .accordion__item {
  border-bottom: 1px solid var(--paper-line);
}

.page-faq .page-faq__qa .accordion__trigger,
.page-faq .page-faq__acc-account .accordion__trigger {
  width: 100%;
  text-align: left;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
}

.page-faq .page-faq__qa .accordion__panel p,
.page-faq .page-faq__acc-account .accordion__panel p {
  margin: 0 0 16px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .page-faq__acc-account {
  margin-top: 28px;
}

/* ---------- 指标示意 SVG ---------- */
.page-faq .page-faq__viz {
  display: block;
  width: 100%;
  max-width: 560px;
  height: auto;
  margin: 30px 0 0;
  border-radius: var(--radius-m);
}

/* ---------- 表格 ---------- */
.page-faq .page-faq__table-wrap,
.page-faq .page-faq__glossary {
  margin-top: 26px;
  overflow-x: auto;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-m);
  background: var(--white);
  scrollbar-width: thin;
}

.page-faq .page-faq__table,
.page-faq .page-faq__glossary-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .page-faq__table-caption {
  padding: 16px 18px 0;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange-deep);
}

.page-faq .page-faq__table th,
.page-faq .page-faq__table td,
.page-faq .page-faq__glossary-table th,
.page-faq .page-faq__glossary-table td {
  padding: 13px 18px;
  text-align: left;
  vertical-align: top;
  line-height: 1.62;
  border-bottom: 1px solid var(--paper-line);
}

.page-faq .page-faq__table thead th,
.page-faq .page-faq__glossary-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange-deep);
  background: var(--cream);
  white-space: nowrap;
}

.page-faq .page-faq__table tbody th,
.page-faq .page-faq__glossary-table tbody th {
  font-weight: 700;
  color: var(--ink-deep);
}

.page-faq .page-faq__table tbody tr:nth-child(even),
.page-faq .page-faq__glossary-table tbody tr:nth-child(even) {
  background: rgba(227, 217, 198, 0.34);
}

.page-faq .page-faq__table tbody tr:last-child th,
.page-faq .page-faq__table tbody tr:last-child td,
.page-faq .page-faq__glossary-table tbody tr:last-child th,
.page-faq .page-faq__glossary-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .page-faq__glossary-table td:nth-child(2) {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-mid);
  white-space: nowrap;
}

/* ---------- 双栏面板 ---------- */
.page-faq .page-faq__dual {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.page-faq .page-faq__panel {
  padding: 26px 24px 28px;
  background: var(--white);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
}

.page-faq .page-faq__panel--dark {
  background: var(--ink-deep);
  color: var(--ink-soft);
  box-shadow: var(--shadow-float);
}

.page-faq .page-faq__panel-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--ink-deep);
}

.page-faq .page-faq__panel-title--light {
  color: var(--white);
}

.page-faq .page-faq__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  font-size: 15px;
  line-height: 1.72;
}

.page-faq .page-faq__list li {
  position: relative;
  padding-left: 18px;
}

.page-faq .page-faq__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--orange);
  transform: rotate(45deg);
}

.page-faq .page-faq__list--light {
  color: var(--ink-soft);
}

.page-faq .page-faq__list--light li::before {
  background: var(--neon);
}

/* ---------- CTA 行 ---------- */
.page-faq .page-faq__cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 0;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-faq .page-faq__tree {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .page-faq__dual {
    grid-template-columns: 1.12fr 0.88fr;
    align-items: start;
  }

  .page-faq .page-faq__hero {
    padding: calc(var(--header-h) + 64px) 0 80px;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 1000px) {
  .page-faq .page-faq__hero-grid {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    gap: 64px;
    align-items: end;
  }

  .page-faq .page-faq__shell {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 62px;
    padding: 72px 0 112px;
  }

  .page-faq .page-faq__index {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .page-faq__index-list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
    padding-bottom: 0;
  }

  .page-faq .page-faq__index-link {
    width: 100%;
  }

  .page-faq .page-faq__section {
    padding-bottom: 64px;
    margin-bottom: 64px;
  }

  .page-faq .page-faq__viz {
    margin-top: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .page-faq__tree-item,
  .page-faq .page-faq__index-link,
  .page-faq .page-faq__link {
    transition: none;
  }

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