.page-faq {
  --faq-card: rgba(18, 32, 54, .78);
  --faq-toc-w: 258px;
  padding-bottom: 72px;
}

.page-faq .shell {
  display: block;
}

.page-faq .breadcrumb {
  margin: 20px 0 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(138deg, rgba(49, 228, 210, .08), rgba(139, 108, 240, .07) 46%, transparent 72%),
    var(--rock);
  padding: 26px 18px 26px 30px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 10px;
  background: repeating-linear-gradient(to bottom, var(--line-strong) 0 1px, transparent 1px 12px);
  opacity: .7;
}

.page-faq .hero-copy {
  max-width: 68ch;
}

.page-faq .hero-kicker {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 9px;
  border: 1px solid var(--glass-stroke);
  border-radius: var(--radius);
  background: var(--glass-bg);
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .hero-lede {
  margin: 0 0 20px;
  max-width: 62ch;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.78;
}

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

.page-faq .hero-figure {
  margin: 22px 0 0;
}

.page-faq .figure-media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .hero-figure .figure-media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--night-2);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 42px;
}

.page-faq .faq-toc {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass-bg);
  padding: 16px 14px;
}

.page-faq .toc-head {
  margin: 0 0 12px;
  color: var(--stone);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
}

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

.page-faq .toc-link {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--stone);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .toc-idx {
  font-size: 11px;
  color: var(--violet);
  letter-spacing: .06em;
}

.page-faq .toc-link:hover,
.page-faq .toc-link:focus-visible {
  color: var(--cream);
  background: rgba(49, 228, 210, .08);
}

.page-faq .toc-link:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

.page-faq .toc-link.is-active {
  color: var(--cream);
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, var(--cyan-soft), transparent 86%);
}

.page-faq .toc-link.is-active .toc-idx {
  color: var(--cyan);
}

.page-faq .toc-note {
  margin: 14px 2px 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--stone);
  font-size: 12px;
  line-height: 1.7;
}

/* ---------- 场景区块 ---------- */
.page-faq .faq-section {
  scroll-margin-top: 128px;
}

.page-faq .faq-section + .faq-section {
  margin-top: 54px;
}

.page-faq .scene-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 14px;
  align-items: baseline;
  padding-bottom: 12px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .scene-idx {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .14em;
}

.page-faq .scene-title {
  margin: 0 0 7px;
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .scene-summary {
  margin: 0;
  max-width: 60ch;
  color: var(--stone);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .scene-count {
  grid-column: 2;
  justify-self: start;
  color: var(--violet);
  font-size: 11px;
  letter-spacing: .1em;
}

/* ---------- 三步条 ---------- */
.page-faq .step-strip {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.page-faq .step-item {
  display: grid;
  gap: 6px;
  padding: 14px 15px 16px;
  background: var(--night-2);
}

.page-faq .step-num {
  color: var(--amber);
  font-size: 10px;
  letter-spacing: .18em;
}

.page-faq .step-label {
  color: var(--cream);
  font-size: 14px;
  line-height: 1.6;
}

/* ---------- 问答卡 ---------- */
.page-faq .faq-section {
  counter-reset: qa;
}

.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

.page-faq .qa-card {
  position: relative;
  counter-increment: qa;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--faq-card);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .qa-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: var(--line);
  transition: background .3s var(--ease);
}

.page-faq .qa-card[open] {
  border-color: var(--glass-stroke);
  background: rgba(18, 32, 54, .94);
}

.page-faq .qa-card[open]::before {
  background: linear-gradient(90deg, var(--cyan), var(--violet) 62%, transparent);
}

.page-faq .qa-question {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 20px;
  gap: 10px;
  align-items: start;
  padding: 16px 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-question:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: -2px;
}

.page-faq .qa-mark {
  color: var(--stone);
  font-size: 11px;
  letter-spacing: .06em;
  padding-top: 4px;
}

.page-faq .qa-mark::before {
  content: counter(qa, decimal-leading-zero);
}

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

.page-faq .qa-text {
  color: var(--cream);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.62;
}

.page-faq .qa-toggle {
  position: relative;
  width: 14px;
  height: 14px;
  justify-self: end;
  margin-top: 5px;
}

.page-faq .qa-toggle::before,
.page-faq .qa-toggle::after {
  content: "";
  position: absolute;
  background: var(--stone);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .qa-toggle::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .qa-toggle::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-faq .qa-card[open] .qa-toggle::before {
  background: var(--cyan);
}

.page-faq .qa-card[open] .qa-toggle::after {
  transform: scaleY(0);
}

.page-faq .qa-answer {
  padding: 0 14px 18px 54px;
}

.page-faq .qa-answer p {
  margin: 0;
  max-width: 66ch;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .qa-card[open] .qa-answer {
  animation: faqCardIn .26s var(--ease);
}

.page-faq .inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(49, 228, 210, .4);
}

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

.page-faq .qa-split {
  display: grid;
  gap: 20px;
}

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

.page-faq .qa-figure .figure-media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--night-2);
}

/* ---------- 人工协助 ---------- */
.page-faq .help-panel {
  display: grid;
  gap: 20px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background:
    linear-gradient(126deg, rgba(255, 139, 61, .08), rgba(139, 108, 240, .08) 55%, transparent 84%),
    var(--rock);
  padding: 22px 18px;
}

.page-faq .help-lede {
  margin: 0 0 18px;
  max-width: 58ch;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .help-data {
  margin: 0;
}

.page-faq .help-data .data-row {
  align-items: baseline;
}

.page-faq .help-data .data-val {
  word-break: break-all;
}

.page-faq .help-foot {
  margin: 14px 0 0;
  color: var(--stone);
  font-size: 11px;
  letter-spacing: .08em;
}

@keyframes faqCardIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-hero {
    padding: 34px 28px 34px 40px;
  }

  .page-faq .faq-hero h1 {
    font-size: 40px;
  }

  .page-faq .scene-title {
    font-size: 24px;
  }

  .page-faq .scene-head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: start;
  }

  .page-faq .scene-count {
    grid-column: 3;
    justify-self: end;
  }

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

  .page-faq .qa-question {
    grid-template-columns: 36px minmax(0, 1fr) 22px;
    gap: 12px;
    padding: 18px 18px;
  }

  .page-faq .qa-answer {
    padding: 0 18px 22px 66px;
  }

  .page-faq .qa-text {
    font-size: 16px;
  }

  .page-faq .help-panel {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
    padding: 26px 24px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-toc-w) minmax(0, 1fr);
    gap: 52px;
    margin-top: 56px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-section + .faq-section {
    margin-top: 64px;
  }

  .page-faq .faq-hero h1 {
    font-size: 56px;
  }

  .page-faq .hero-lede {
    font-size: 17px;
  }
}

@media (min-width: 1180px) {
  .page-faq .qa-split {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-faq .qa-figure .figure-media {
    position: sticky;
    top: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-card[open] .qa-answer {
    animation: none;
  }

  .page-faq .qa-toggle::before,
  .page-faq .qa-toggle::after,
  .page-faq .qa-card,
  .page-faq .qa-card::before,
  .page-faq .toc-link {
    transition: none;
  }
}