.page-faq {
  --faq-line: 2px solid var(--rail);
  --faq-pad: 18px;
  padding-bottom: 72px;
}

.page-faq .faq-shell {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--faq-pad);
}

.page-faq .crumbs {
  padding: 22px 0 10px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: 6px;
  padding: 30px 18px 26px;
  border: var(--faq-line);
  background:
    linear-gradient(158deg, var(--panel) 0%, var(--panel-2) 42%, var(--ink) 100%);
  box-shadow: 9px 9px 0 rgba(0, 0, 0, 0.55);
}

.page-faq .faq-hero::before,
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  width: 42px;
  height: 42px;
  pointer-events: none;
}

.page-faq .faq-hero::before {
  top: -2px;
  left: -2px;
  border-top: 3px solid var(--lime);
  border-left: 3px solid var(--lime);
}

.page-faq .faq-hero::after {
  bottom: -2px;
  right: -2px;
  border-bottom: 3px solid var(--lime);
  border-right: 3px solid var(--lime);
}

.page-faq .eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 14px;
  font-size: clamp(27px, 7.6vw, 46px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero .lede {
  margin: 0 0 20px;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--steel);
}

.page-faq .faq-jump {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--rail);
  background: var(--ink);
  color: var(--white);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-jump-idx {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--lime);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
}

.page-faq .media-frame {
  border: var(--faq-line);
  background: var(--ink);
  overflow: hidden;
}

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

.page-faq .media-caption {
  padding: 10px 12px;
  border-top: 1px solid var(--rail);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--steel);
}

.page-faq .faq-hero-figure {
  margin: 24px 0 0;
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding-top: 54px;
}

.page-faq .faq-section-head {
  padding-left: 15px;
  border-left: 3px solid var(--lime);
  margin-bottom: 26px;
}

.page-faq .faq-section-head h2 {
  margin: 8px 0 10px;
  font-size: clamp(21px, 5.2vw, 31px);
  font-weight: 800;
  line-height: 1.16;
  color: var(--white);
}

.page-faq .faq-section-head p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 步骤轨道 ---------- */
.page-faq .faq-track {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 780px;
}

.page-faq .faq-track::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 12px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime) 0%, var(--rail) 46%, var(--rail) 100%);
}

.page-faq .faq-step {
  position: relative;
  padding: 0 0 28px 52px;
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-step-idx {
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 2px solid var(--rail);
  background: var(--ink);
  color: var(--lime);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-step:hover .faq-step-idx {
  border-color: var(--lime);
  background: var(--panel);
}

.page-faq .faq-step h3 {
  margin: 5px 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--steel);
}

.page-faq .faq-code {
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid var(--rail);
  background: var(--ink);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--cyan);
}

/* ---------- 兼容对照 ---------- */
.page-faq .faq-compare-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-faq .faq-compare-figure {
  margin: 0;
}

.page-faq .faq-table-wrap {
  width: 100%;
  border: var(--faq-line);
  background: var(--panel);
  overflow-x: auto;
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.45);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
}

.page-faq .faq-table-caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--lime);
  background: var(--ink);
  border-bottom: 1px solid var(--rail);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--rail);
  border-right: 1px solid var(--rail);
  text-align: left;
  vertical-align: top;
  font-size: 13.5px;
  line-height: 1.7;
}

.page-faq .faq-table tr th:last-child,
.page-faq .faq-table tr td:last-child {
  border-right: 0;
}

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

.page-faq .faq-table thead th {
  background: var(--panel-2);
  color: var(--lime);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-faq .faq-table tbody th {
  color: var(--white);
  font-weight: 700;
  background: var(--panel-2);
}

.page-faq .faq-table tbody td {
  color: var(--steel);
}

.page-faq .faq-table tbody tr:hover td {
  background: rgba(198, 255, 0, 0.05);
}

.page-faq .faq-table .tag {
  display: inline-block;
  margin-right: 6px;
  padding: 2px 7px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  border: 1px solid currentColor;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-accordion {
  max-width: 860px;
}

.page-faq .faq-item {
  margin-bottom: 12px;
  border: var(--faq-line);
  background: var(--panel);
  transition: border-color 0.18s ease;
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

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

.page-faq .faq-item summary::before {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--lime);
}

.page-faq .faq-item[open] summary::before {
  content: "–";
}

.page-faq .faq-item summary:hover {
  color: var(--lime);
}

.page-faq .faq-item p {
  margin: 0;
  padding: 0 16px 18px 42px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 快捷路径 ---------- */
.page-faq .faq-routes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-route {
  display: block;
  padding: 18px 16px;
  border: var(--faq-line);
  background: var(--panel);
  text-decoration: none;
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-route strong {
  display: block;
  margin-bottom: 7px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-route span {
  display: block;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-route:hover,
.page-faq .faq-route:focus-visible {
  border-color: var(--lime);
  background: var(--panel-2);
  transform: translateY(-2px);
}

.page-faq .faq-route:hover strong {
  color: var(--lime);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq {
    --faq-pad: 28px;
  }

  .page-faq .faq-hero {
    padding: 38px 32px 34px;
  }

  .page-faq .faq-routes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-step {
    padding-left: 60px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    display: grid;
    grid-template-columns: 1.06fr 0.94fr;
    gap: 38px;
    align-items: center;
    padding: 46px 42px;
  }

  .page-faq .faq-hero-figure {
    margin: 0;
  }

  .page-faq .faq-section {
    padding-top: 68px;
  }

  .page-faq .faq-step {
    padding-bottom: 30px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-compare-grid {
    flex-direction: row;
    align-items: flex-start;
    gap: 26px;
  }

  .page-faq .faq-compare-figure {
    flex: 0 0 300px;
    position: sticky;
    top: calc(var(--head-h) + 20px);
  }

  .page-faq .faq-table-wrap {
    flex: 1 1 auto;
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-step-idx,
  .page-faq .faq-item,
  .page-faq .faq-route {
    transition: none;
  }

  .page-faq .faq-route:hover,
  .page-faq .faq-route:focus-visible {
    transform: none;
  }
}