.page-faq {
  --faq-gap: clamp(20px, 3vw, 40px);
  --faq-soft: rgba(16, 63, 58, .45);
}

.page-faq .faq-hero {
  display: grid;
  gap: var(--faq-gap);
  padding-block: clamp(24px, 4vw, 52px) clamp(20px, 3vw, 36px);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(38px, 6.4vw, 84px);
  line-height: 1.02;
  overflow-wrap: break-word;
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 12px;
}

.page-faq .faq-hero .lede {
  margin: 0 0 24px;
  max-width: 48ch;
}

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

.page-faq .faq-hero-figure {
  margin: 0;
  border-radius: 18px;
  overflow: hidden;
}

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

.page-faq .media-caption {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
    gap: clamp(32px, 4.5vw, 68px);
  }
}

/* ---------- 三步路径 ---------- */

.page-faq .faq-path .section-head {
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-faq .faq-path .section-head h2 {
  margin: 6px 0 10px;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.1;
}

.page-faq .path-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .path-step {
  background: var(--faq-soft);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 18px;
}

.page-faq .path-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 14px;
  border-radius: 12px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan);
  background: rgba(43, 245, 214, .1);
  border: 1px solid rgba(43, 245, 214, .35);
}

.page-faq .path-step:nth-child(2) .path-num {
  color: var(--gold);
  background: rgba(201, 162, 75, .1);
  border-color: rgba(201, 162, 75, .38);
}

.page-faq .path-step:nth-child(3) .path-num {
  color: var(--orange);
  background: rgba(255, 106, 42, .1);
  border-color: rgba(255, 106, 42, .38);
}

.page-faq .path-body h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--mist);
}

.page-faq .path-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

@media (min-width: 820px) {
  .page-faq .path-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }
  .page-faq .path-step {
    background: none;
    border: none;
    border-radius: 0;
    padding: 0 24px;
    position: relative;
  }
  .page-faq .path-step:first-child {
    padding-left: 0;
  }
  .page-faq .path-step:last-child {
    padding-right: 0;
  }
  .page-faq .path-step + .path-step::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(180deg, rgba(43, 245, 214, .55), rgba(43, 245, 214, .04));
  }
}

/* ---------- 分类轨道 + 手风琴 ---------- */

.page-faq .faq-topics .section-head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-topics .section-head h2 {
  margin: 6px 0 0;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.1;
}

.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-rail {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--faq-soft);
  padding: 16px;
}

.page-faq .rail-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--muted);
}

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

.page-faq .rail-link {
  display: inline-flex;
  gap: 8px;
  align-items: baseline;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .rail-link:hover,
.page-faq .rail-link:focus-visible {
  background: rgba(43, 245, 214, .12);
  border-color: rgba(43, 245, 214, .5);
  color: var(--cyan);
}

.page-faq .rail-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted);
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(190px, 3fr) minmax(0, 9fr);
    align-items: start;
    gap: clamp(28px, 4vw, 60px);
  }
  .page-faq .faq-rail {
    position: sticky;
    top: 24px;
    padding: 20px 18px;
  }
  .page-faq .rail-list {
    display: grid;
    gap: 4px;
  }
  .page-faq .rail-link {
    border: none;
    border-radius: 10px;
    padding: 10px 10px;
  }
}

.page-faq .qa-group {
  margin-bottom: clamp(28px, 4vw, 48px);
  scroll-margin-top: 96px;
}

.page-faq .qa-group:last-child {
  margin-bottom: 0;
}

.page-faq .qa-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
}

.page-faq .qa-group-num {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-faq .qa-group-head h3 {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--mist);
  letter-spacing: .01em;
}

.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 20px;
  gap: 14px;
  align-items: baseline;
  padding: 16px 2px;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--mist);
  transition: color .18s var(--ease);
}

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

.page-faq .qa > summary:hover {
  color: var(--cyan);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
  border-radius: 6px;
}

.page-faq .qa[open] > summary {
  color: var(--cyan);
}

.page-faq .qa-index {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-faq .qa-flag {
  position: relative;
  display: block;
  width: 20px;
  height: 16px;
  justify-self: end;
}

.page-faq .qa-flag::before,
.page-faq .qa-flag::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  margin-top: -1px;
  background: var(--cyan);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .qa-flag::after {
  transform: rotate(90deg);
}

.page-faq .qa[open] .qa-flag::after {
  transform: rotate(0deg);
  opacity: 0;
}

.page-faq .qa-body {
  padding: 0 2px 22px 2px;
  display: grid;
  gap: 10px;
}

@media (min-width: 720px) {
  .page-faq .qa-body {
    padding-left: 40px;
  }
}

.page-faq .qa-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .qa-body .qa-lead {
  color: var(--mist);
}

.page-faq .qa-steps {
  list-style: none;
  margin: 2px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .qa-steps li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 10px 12px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
  background: rgba(10, 58, 49, .62);
  border-left: 3px solid var(--cyan);
  border-radius: 0 8px 8px 0;
}

.page-faq .step-key {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .qa-figure {
  margin: 8px 0 0;
}

.page-faq .qa-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid var(--line);
}

/* ---------- V1 / V2 帮助文档对照 ---------- */

.page-faq .faq-compare .section-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-compare .section-head h2 {
  margin: 6px 0 10px;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.1;
}

.page-faq .ver-compare {
  position: relative;
}

.page-faq .ver-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .ver-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.page-faq .ver-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .ver-tab:hover {
  color: var(--mist);
  border-color: rgba(242, 247, 244, .3);
}

.page-faq #ver-v1:checked ~ .ver-tabs .ver-tab[for="ver-v1"] {
  color: var(--gold);
  border-color: rgba(201, 162, 75, .6);
  background: rgba(201, 162, 75, .12);
}

.page-faq #ver-v2:checked ~ .ver-tabs .ver-tab[for="ver-v2"] {
  color: var(--cyan);
  border-color: rgba(43, 245, 214, .6);
  background: rgba(43, 245, 214, .12);
}

.page-faq #ver-v1:focus-visible ~ .ver-tabs .ver-tab[for="ver-v1"],
.page-faq #ver-v2:focus-visible ~ .ver-tabs .ver-tab[for="ver-v2"] {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .ver-pane {
  display: none;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: clamp(18px, 3vw, 30px);
  background: var(--faq-soft);
}

.page-faq #ver-v1:checked ~ .ver-panes .ver-pane--v1 {
  display: block;
}

.page-faq #ver-v2:checked ~ .ver-panes .ver-pane--v2 {
  display: block;
}

.page-faq .ver-pane--v1 {
  border-left: 3px solid var(--gold);
}

.page-faq .ver-pane--v2 {
  border-left: 3px solid var(--cyan);
}

.page-faq .ver-pane h3 {
  margin: 0 0 14px;
  font-size: 17px;
  color: var(--mist);
}

.page-faq .ver-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .ver-list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .ver-key {
  flex: none;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-faq .ver-pane--v2 .ver-key {
  color: var(--cyan);
}

/* ---------- 结尾 ---------- */

.page-faq .cta-card {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(22px, 4vw, 44px);
  border-radius: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(125deg, rgba(46, 36, 80, .88), rgba(10, 58, 49, .78));
}

.page-faq .cta-card h2 {
  margin: 6px 0 12px;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.14;
}

.page-faq .cta-card p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .cta-links {
  display: grid;
  gap: 10px;
  align-content: center;
}

@media (min-width: 840px) {
  .page-faq .cta-card {
    grid-template-columns: minmax(0, 1.5fr) minmax(220px, 1fr);
    align-items: center;
  }
}

@media (max-width: 420px) {
  .page-faq .qa > summary {
    grid-template-columns: auto minmax(0, 1fr) 16px;
    gap: 10px;
    font-size: 15px;
  }
  .page-faq .hero-actions .btn {
    width: 100%;
    text-align: center;
  }
}