.page-faq {
  --faq-rail-w: 238px;
  --faq-card-pad: clamp(16px, 2.2vw, 22px);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-faq .crumbs {
  margin: clamp(20px, 3vw, 34px) 0 clamp(18px, 2.6vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(22px, 3.4vw, 44px);
  padding-bottom: clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(30px, 5.2vw, 62px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.page-faq .faq-lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.35vw, 18px);
  line-height: 1.78;
  color: var(--moss);
}

.page-faq .faq-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

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

@media (min-width: 980px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(26px, 3.4vw, 44px);
  margin-top: clamp(28px, 4vw, 50px);
}

.page-faq .faq-rail {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--rail);
}

.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-faq .faq-rail-nav {
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail-nav .rail-link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 11px 12px;
  border-left: 2px solid transparent;
  border-radius: var(--r-sm);
  font-size: 15px;
  line-height: 1.4;
  color: var(--moss);
  text-decoration: none;
  transition: color 0.18s var(--ease), background 0.18s var(--ease),
    border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-faq .faq-rail-nav .rail-count {
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
}

.page-faq .faq-rail-nav .rail-link:hover,
.page-faq .faq-rail-nav .rail-link:focus-visible {
  color: var(--bone);
  background: var(--glass);
  border-left-color: var(--lime);
  transform: translateX(2px);
}

.page-faq .faq-rail-nav .rail-link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-faq .faq-rail-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--moss);
}

.page-faq .faq-rail-note a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.35);
}

@media (min-width: 1040px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(30px, 3.6vw, 58px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--head-h) + 20px);
  }
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  scroll-margin-top: calc(var(--head-h) + 28px);
}

.page-faq .faq-sec + .faq-sec {
  margin-top: clamp(34px, 5vw, 62px);
  padding-top: clamp(28px, 4.4vw, 52px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-sec .sec-title {
  font-size: clamp(23px, 2.6vw, 32px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-faq .faq-intro {
  margin: 14px 0 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--moss);
}

.page-faq .sec-foot {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--moss);
}

.page-faq .sec-foot a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.35);
}

.page-faq .sec-foot a:hover,
.page-faq .sec-foot a:focus-visible {
  color: var(--bone);
  border-bottom-color: var(--bone);
}

/* ---------- 上手三步 ---------- */
.page-faq .step-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-faq .step-item {
  display: grid;
  gap: 10px;
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--panel);
  transition: background 0.2s var(--ease);
}

.page-faq .step-item:hover {
  background: #121b18;
}

@media (min-width: 720px) {
  .page-faq .step-item {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 18px;
  }
}

.page-faq .step-no {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
}

.page-faq .step-title {
  margin: 0;
  font-size: clamp(17px, 1.6vw, 19px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--bone);
}

.page-faq .step-item p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--moss);
}

/* ---------- 问答折叠 ---------- */
.page-faq .fold-stack {
  margin-top: 22px;
  display: grid;
  gap: 10px;
}

.page-faq .fold {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .fold:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.page-faq .fold[open] {
  border-color: var(--line-strong);
}

.page-faq .fold > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px var(--faq-card-pad);
  cursor: pointer;
  list-style: none;
  font-size: clamp(15.5px, 1.4vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--bone);
}

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

.page-faq .fold > summary::before {
  content: "+";
  flex: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.35;
  color: var(--lime);
}

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

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

.page-faq .fold > summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
  border-radius: var(--r-md);
}

.page-faq .fold-body {
  padding: 0 var(--faq-card-pad) 18px 44px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--moss);
}

/* ---------- 数据条 ---------- */
.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 26px 0 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-faq .faq-stat {
  padding: 18px clamp(14px, 2vw, 22px);
  background: var(--panel);
}

.page-faq .faq-stat .num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
}

.page-faq .faq-stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--moss);
}

@media (min-width: 760px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 流程图 ---------- */
.page-faq .faq-flow-figure {
  margin: 22px 0 0;
  max-width: 460px;
}

/* ---------- 尾部行动区 ---------- */
.page-faq .faq-cta {
  margin-top: 28px;
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--gold);
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, rgba(224, 166, 60, 0.14), rgba(224, 166, 60, 0) 64%);
  display: grid;
  gap: 16px;
}

.page-faq .faq-cta-title {
  margin: 0;
  font-size: clamp(18px, 1.8vw, 22px);
  font-weight: 700;
  line-height: 1.36;
  color: var(--bone);
}

.page-faq .faq-cta-text {
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--moss);
}

.page-faq .faq-cta .btn {
  justify-self: start;
  white-space: nowrap;
}

@media (min-width: 760px) {
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .fold,
  .page-faq .step-item,
  .page-faq .faq-rail-nav .rail-link {
    transition: none;
  }

  .page-faq .fold:hover,
  .page-faq .faq-rail-nav .rail-link:hover {
    transform: none;
  }
}
</final>