.page-faq {
  --faq-gap: clamp(24px, 4vw, 56px);
  --faq-step-w: clamp(200px, 26vw, 300px);
}

/* ---------- 封面层 ---------- */
.page-faq .faq-cover {
  padding: clamp(24px, 5vw, 56px) 0 var(--faq-gap);
  border-bottom: 1px solid var(--z9-line);
}

.page-faq .faq-cover__title {
  margin: 12px 0 0;
  font-family: var(--z9-narrow);
  font-size: clamp(32px, 7vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--z9-white);
  max-width: 16em;
}

.page-faq .faq-cover__lede {
  margin-top: 20px;
  max-width: 62ch;
  color: var(--z9-cream);
}

.page-faq .faq-cover__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--z9-line);
  background: var(--z9-panel);
  color: var(--z9-cream);
  font-size: 15px;
  text-decoration: none;
  transition: border-color 180ms var(--z9-ease), transform 180ms var(--z9-ease);
}

.page-faq .faq-jump:hover,
.page-faq .faq-jump:focus-visible {
  border-color: var(--z9-cyan);
  transform: translateY(-2px);
}

.page-faq .faq-jump__no {
  font-family: var(--z9-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--z9-cyan);
}

/* ---------- 三步路径 ---------- */
.page-faq .faq-steps__list {
  display: grid;
  gap: var(--faq-gap);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-faq .faq-step {
  position: relative;
  padding: 26px 20px 24px;
  background: var(--z9-panel);
  border: 1px solid var(--z9-line);
  border-left: 3px solid var(--z9-cyan);
}

.page-faq .faq-step:nth-child(2) {
  border-left-color: var(--z9-orange);
}

.page-faq .faq-step:nth-child(3) {
  border-left-color: var(--z9-gold);
}

.page-faq .faq-step__no {
  display: block;
  font-family: var(--z9-mono);
  font-size: 44px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--z9-line);
}

.page-faq .faq-step__title {
  margin: 12px 0 0;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--z9-white);
}

.page-faq .faq-step__body {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--z9-cream);
}

.page-faq .faq-step__body a {
  color: var(--z9-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--z9-cyan);
}

.page-faq .faq-step__gain {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--z9-line);
  font-family: var(--z9-mono);
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--z9-gold);
}

.page-faq .faq-steps__figure {
  margin-top: clamp(28px, 4vw, 48px);
}

/* ---------- 目录 ---------- */
.page-faq .faq-catalog__grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-fold {
  background: var(--z9-panel);
  border: 1px solid var(--z9-line);
}

.page-faq .faq-fold[open] {
  border-color: var(--z9-cyan);
}

.page-faq .faq-fold__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-fold__name {
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 800;
  color: var(--z9-cream);
}

.page-faq .faq-fold[open] .faq-fold__name {
  color: var(--z9-cyan);
}

.page-faq .faq-fold__count {
  font-family: var(--z9-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--z9-mist);
  white-space: nowrap;
}

.page-faq .faq-fold__list {
  margin: 0;
  padding: 4px 20px 20px;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-fold__list li {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid var(--z9-line);
}

.page-faq .faq-fold__item {
  font-size: 15px;
  line-height: 1.7;
  color: var(--z9-cream);
}

.page-faq .faq-fold__use {
  font-family: var(--z9-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--z9-mist);
}

/* ---------- 常见疑问 ---------- */
.page-faq .faq-qa__list {
  display: grid;
  gap: 0;
  margin: 0;
}

.page-faq .faq-qa__item {
  padding: 24px 0;
  border-top: 1px solid var(--z9-line);
}

.page-faq .faq-qa__item:last-child {
  border-bottom: 1px solid var(--z9-line);
}

.page-faq .faq-qa__q {
  font-family: var(--z9-mono);
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--z9-cyan);
}

.page-faq .faq-qa__a {
  margin: 12px 0 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--z9-cream);
}

/* ---------- 记录同步 ---------- */
.page-faq .faq-sync__split {
  display: grid;
  gap: var(--faq-gap);
}

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

.page-faq .faq-sync__node {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 0 16px;
  padding: 20px 0;
  border-top: 1px solid var(--z9-line);
}

.page-faq .faq-sync__idx {
  grid-row: 1 / span 2;
  font-family: var(--z9-mono);
  font-size: 22px;
  line-height: 1.2;
  color: var(--z9-orange);
}

.page-faq .faq-sync__h {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--z9-white);
}

.page-faq .faq-sync__node p {
  grid-column: 2;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--z9-cream);
}

.page-faq .faq-sync__node p a {
  color: var(--z9-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--z9-cyan);
}

.page-faq .faq-sync__figure {
  margin: 0;
}

/* ---------- 更新节奏 ---------- */
.page-faq .faq-keep__panel {
  padding: clamp(24px, 4vw, 44px);
}

.page-faq .faq-keep__body {
  margin: 18px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--z9-cream);
}

.page-faq .faq-keep__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  background: var(--z9-line);
  border: 1px solid var(--z9-line);
}

.page-faq .faq-keep__meta li {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  background: var(--z9-deep);
}

.page-faq .faq-keep__k {
  font-family: var(--z9-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--z9-mist);
}

.page-faq .faq-keep__v {
  font-family: var(--z9-narrow);
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--z9-cyan);
}

.page-faq .faq-keep__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 桌面 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-faq .faq-step:nth-child(1) {
    margin-top: 0;
  }

  .page-faq .faq-step:nth-child(2) {
    margin-top: 32px;
  }

  .page-faq .faq-step:nth-child(3) {
    margin-top: 64px;
  }

  .page-faq .faq-catalog__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 16px;
  }

  .page-faq .faq-fold:first-child {
    grid-row: span 2;
  }

  .page-faq .faq-sync__split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-keep__meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-cover__title {
    margin-left: -2px;
  }

  .page-faq .faq-catalog__grid {
    gap: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump {
    transition: none;
  }

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