.page-faq {
  --faq-anchor: 176px;
  --faq-gap: clamp(32px, 5vw, 64px);
  display: block;
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-hero {
  padding: clamp(20px, 4vw, 44px) 0 clamp(28px, 4vw, 52px);
}

.page-faq .hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-faq .hero-copy {
  min-width: 0;
}

.page-faq .hero-title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(28px, 5.2vw, var(--fs-h1));
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--on-dark);
}

.page-faq .hero-lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--on-dark-dim);
}

.page-faq .hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

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

.page-faq .hero-frame {
  box-shadow: var(--shadow-plate);
}

.page-faq .media-caption {
  margin-top: 10px;
  font-size: var(--fs-note);
  color: var(--stone);
  line-height: 1.6;
}

/* ---------- 索引栏 ---------- */
.page-faq .faq-rail {
  border-top: 1px solid var(--line-soft);
  padding-top: 18px;
}

.page-faq .rail-title {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

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

.page-faq .rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px 9px 0;
  border-bottom: 1px dashed var(--line-hair);
  font-size: 15px;
  line-height: 1.5;
  color: var(--on-dark);
  text-decoration: none;
  transition: color var(--dur) ease, transform var(--dur) ease;
}

.page-faq .rail-link:hover,
.page-faq .rail-link:focus-visible {
  color: var(--cyan);
  transform: translateX(3px);
}

.page-faq .rail-no {
  font-family: var(--font-num);
  font-size: var(--fs-micro);
  color: var(--clay);
  letter-spacing: 0.06em;
}

.page-faq .rail-note {
  margin: 18px 0 0;
  font-size: var(--fs-note);
  line-height: 1.7;
  color: var(--stone);
}

.page-faq .rail-inline {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: var(--faq-gap);
  min-width: 0;
}

.page-faq .qa-group {
  scroll-margin-top: var(--faq-anchor);
  min-width: 0;
}

.page-faq .qa-group__head {
  position: relative;
  padding-left: 14px;
  border-left: 2px solid var(--line-soft);
  margin-bottom: 20px;
}

.page-faq .qa-group:target .qa-group__head {
  border-left-color: var(--cyan);
}

.page-faq .qa-group__no {
  display: block;
  font-family: var(--font-num);
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  color: var(--clay);
}

.page-faq .qa-group:target .qa-group__no {
  color: var(--amber);
}

.page-faq .qa-group__title {
  margin: 6px 0 0;
  font-family: var(--font-head);
  font-size: clamp(20px, 3vw, var(--fs-h3));
  font-weight: 800;
  line-height: 1.3;
  color: var(--on-dark);
}

.page-faq .qa-group__lead {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 问答卡 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 12px;
}

.page-faq .qa-item {
  position: relative;
  counter-increment: none;
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  box-shadow: inset 0 1px 0 rgba(201, 212, 232, 0.06);
  transition: box-shadow var(--dur) ease, border-color var(--dur) ease;
}

.page-faq .qa-item::after {
  content: "";
  position: absolute;
  top: -1px;
  right: 20px;
  width: 11px;
  height: 20px;
  border: 1px solid var(--line-soft);
  border-top: none;
  background: var(--ink-base);
  transition: background var(--dur) ease, border-color var(--dur) ease;
}

.page-faq .qa-item[open] {
  box-shadow: inset 3px 0 0 var(--amber), inset 0 1px 0 rgba(201, 212, 232, 0.06);
  border-color: var(--line);
}

.page-faq .qa-item[open]::after {
  background: var(--amber);
  border-color: var(--amber);
}

.page-faq .qa-item .fold__head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 16px 44px 16px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-item .fold__no {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: var(--fs-micro);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .qa-item .fold__summary {
  display: block;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--on-dark);
}

.page-faq .qa-item[open] .fold__summary {
  color: var(--on-dark);
}

.page-faq .qa-item .fold__body {
  padding: 0 16px 18px 42px;
  border-top: 1px dashed var(--line-hair);
  animation: faq-pull var(--dur) ease both;
}

@keyframes faq-pull {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .qa-item .fold__body p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--on-dark-dim);
}

.page-faq .qa-item .fold__body strong {
  color: var(--on-dark);
  font-weight: 700;
}

.page-faq .qa-go {
  font-size: var(--fs-note) !important;
  color: var(--stone) !important;
}

.page-faq .qa-go a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa-count {
  counter-reset: none;
  margin: 12px 0 0;
  text-align: right;
  font-family: var(--font-num);
  font-size: var(--fs-micro);
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-faq .qa-count::after {
  content: "已展开 " counter(qa-open) " / " attr(data-total) " 条";
}

.page-faq .qa-group {
  counter-reset: qa-open 0;
}

.page-faq .qa-item[open] {
  counter-increment: qa-open;
}

/* ---------- 适配周期图 ---------- */
.page-faq .cycle-figure {
  margin: 0 0 20px;
}

.page-faq .cycle-frame {
  max-width: 560px;
}

/* ---------- 下一步 ---------- */
.page-faq .faq-next {
  margin-top: clamp(40px, 6vw, 80px);
  padding-top: clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-next__head {
  margin-bottom: 22px;
}

.page-faq .faq-next__title {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-size: clamp(20px, 3vw, var(--fs-h3));
  font-weight: 800;
  line-height: 1.3;
  color: var(--on-dark);
}

.page-faq .faq-next__lead {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--stone);
}

.page-faq .next-grid {
  display: grid;
  gap: 12px;
}

.page-faq .next-card {
  display: grid;
  gap: 6px;
  padding: 18px 18px 20px;
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  text-decoration: none;
  transition: border-color var(--dur) ease, transform var(--dur) ease, box-shadow var(--dur) ease;
}

.page-faq .next-card:hover,
.page-faq .next-card:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-3px);
  box-shadow: var(--shadow-plate);
}

.page-faq .next-card__no {
  font-family: var(--font-num);
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  color: var(--clay);
}

.page-faq .next-card__name {
  font-family: var(--font-head);
  font-size: var(--fs-h4);
  font-weight: 700;
  color: var(--on-dark);
}

.page-faq .next-card__hint {
  font-size: var(--fs-note);
  line-height: 1.7;
  color: var(--on-dark-dim);
}

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

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-faq .qa-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .page-faq .qa-item:nth-child(even) {
    margin-top: 26px;
  }

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

  .page-faq .cycle-figure {
    margin-bottom: 26px;
  }
}

@media (min-width: 900px) {
  .page-faq .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-rail {
    border-top: none;
    padding-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item .fold__body {
    animation: none;
  }

  .page-faq .rail-link,
  .page-faq .next-card {
    transition: none;
  }
}