.page-faq {
  --faq-idx: 268px;
  display: block;
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 页头 ---------- */
.page-faq .faq-head {
  position: relative;
  margin-top: clamp(14px, 3vw, 26px);
  padding: clamp(22px, 4vw, 40px) clamp(18px, 3.6vw, 38px);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(63, 232, 206, .10), transparent 55%),
    linear-gradient(150deg, var(--turf-2), var(--ink-2) 72%);
  border: 2px solid var(--line);
  border-left: 6px solid var(--cyan);
  box-shadow: var(--shadow-soft);
}

.page-faq .page-title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1.02;
  margin: .35rem 0 .7rem;
}

.page-faq .faq-head .lede {
  max-width: 62ch;
  color: var(--text);
}

.page-faq .faq-head-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
  margin: 1.1rem 0 0;
}

/* ---------- 首屏三条 ---------- */
.page-faq .faq-top {
  margin-top: clamp(34px, 6vw, 58px);
}

.page-faq .faq-top-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-faq .faq-top-card {
  display: flex;
  flex-direction: column;
  gap: .65rem;
  padding: 1.2rem 1.15rem 1.1rem;
  background: linear-gradient(180deg, var(--turf-2), var(--ink-2));
  border: 1px solid var(--line);
  border-top: 4px solid var(--orange);
  box-shadow: var(--shadow-soft);
  transition: transform .18s ease, border-color .18s ease;
}

.page-faq .faq-top-card:hover {
  transform: translateY(-4px);
  border-color: rgba(63, 232, 206, .55);
}

.page-faq .faq-top-card h3 {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .faq-top-card p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-num {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  padding: .15rem .45rem;
  background: var(--yellow);
  color: var(--ink);
  border-radius: 1px;
}

.page-faq .faq-more {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 232, 206, .45);
  align-self: flex-start;
  padding-bottom: 2px;
}

.page-faq .faq-more:hover,
.page-faq .faq-more:focus-visible {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
}

/* ---------- 主区：索引 + 问答 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
  min-width: 0;
  margin-top: clamp(40px, 7vw, 72px);
}

.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-index {
  border: 1px solid var(--line);
  background: var(--ink-2);
  padding: .85rem .8rem;
  min-width: 0;
}

.page-faq .faq-index-h {
  margin: 0 0 .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--muted);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 .35rem;
  display: flex;
  gap: .45rem;
  overflow-x: auto;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index-list li {
  flex: 0 0 auto;
}

.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  padding: .42rem .6rem .42rem .55rem;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: .84rem;
  line-height: 1.45;
  text-decoration: none;
  white-space: nowrap;
  transition: color .15s ease, border-color .15s ease, background .15s ease;
}

.page-faq .faq-index-list a:hover {
  color: var(--paper);
  border-left-color: var(--cyan);
  background: rgba(63, 232, 206, .08);
}

.page-faq .faq-index-list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .idx-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--yellow);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 6vw, 64px);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding-bottom: .7rem;
  margin-bottom: 1.1rem;
  border-bottom: 3px solid var(--hair);
}

.page-faq .faq-group-num {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
  min-width: 0;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--turf-2), var(--ink-2));
  margin-bottom: .7rem;
  scroll-margin-top: 110px;
  transition: border-color .18s ease, background .18s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(63, 232, 206, .45);
}

.page-faq .faq-item:target {
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px rgba(63, 232, 206, .28);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  padding: .95rem 1rem;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.2;
  color: var(--cyan);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
  color: var(--orange);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item .faq-num {
  background: rgba(63, 232, 206, .14);
  color: var(--cyan);
  margin-top: .18rem;
}

.page-faq .faq-q {
  font-size: .98rem;
  font-weight: 500;
  line-height: 1.55;
}

.page-faq .faq-a {
  padding: 0 1rem 1rem 3rem;
  border-top: 1px dashed rgba(27, 21, 18, .18);
  margin-top: -.15rem;
}

.page-faq .faq-a p {
  margin: .7rem 0 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 232, 206, .5);
}

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

/* 展开后翻成奶油纸面 */
.page-faq .faq-item[open] {
  background: var(--paper);
  border-color: var(--paper-ink);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-item[open] > summary {
  color: var(--paper-ink);
}

.page-faq .faq-item[open] .faq-num {
  background: var(--paper-ink);
  color: var(--yellow);
}

.page-faq .faq-item[open] .faq-a {
  border-top-color: rgba(27, 21, 18, .2);
}

.page-faq .faq-item[open] .faq-a p {
  color: #3D322A;
}

.page-faq .faq-item[open] .faq-a a {
  color: #0E6B5C;
  border-bottom-color: rgba(14, 107, 92, .5);
}

.page-faq .faq-item[open] .faq-a a:hover,
.page-faq .faq-item[open] .faq-a a:focus-visible {
  color: var(--paper-ink);
  border-bottom-color: var(--paper-ink);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

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

.page-faq .faq-figure figcaption {
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  line-height: 1.55;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-top-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-idx) minmax(0, 1fr);
    gap: clamp(2rem, 3vw, 3rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
  }

  .page-faq .faq-index-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index-list li {
    flex: none;
  }

  .page-faq .faq-index-list a {
    white-space: normal;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(1.5rem, 2.5vw, 2.5rem);
    align-items: start;
  }
}

@media (max-width: 520px) {
  .page-faq .faq-a {
    padding-left: 1rem;
  }

  .page-faq .faq-index-list a {
    font-size: .8rem;
  }
}