.page-faq {
  --faq-line-x: 12px;
  --faq-pin: 12px;
  --faq-qcol: 24px;
  --faq-qgap: 10px;
}

/* ---------- 面包屑与首屏 ---------- */
.page-faq .breadcrumb {
  padding-top: 20px;
}

.page-faq .faq-hero {
  padding: 20px 0 40px;
  max-width: 780px;
}

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--dirt);
}

.page-faq .faq-kicker::before {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dirt);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 4.6vw, 52px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--ink);
}

.page-faq .faq-hero .lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 38em;
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
  padding-bottom: 72px;
}

@media (min-width: 980px) {
  .page-faq .faq-shell {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: 56px;
    padding-bottom: 110px;
  }
}

/* ---------- 左侧分类主干 ---------- */
.page-faq .faq-tree {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--glass);
  padding: 16px 14px;
  overflow: hidden;
}

@media (min-width: 980px) {
  .page-faq .faq-tree {
    position: sticky;
    top: 24px;
    padding: 24px 20px 24px 16px;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
  }
}

.page-faq .faq-tree-title {
  margin: 0 0 14px;
  padding-left: 26px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--dirt);
}

.page-faq .faq-tree-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-tree-list::before {
  content: "";
  position: absolute;
  left: var(--faq-line-x);
  top: 18px;
  bottom: 18px;
  border-left: 1px dashed var(--rule);
}

.page-faq .faq-tree-list > li {
  margin: 0;
}

.page-faq .faq-node {
  position: relative;
  display: block;
  padding: 11px 8px 11px 32px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  border-radius: 8px;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-node::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 15px;
  width: var(--faq-pin);
  height: var(--faq-pin);
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--dirt);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-node:hover,
.page-faq .faq-node:focus-visible {
  background: rgba(194, 71, 42, 0.09);
}

.page-faq .faq-node:hover::before,
.page-faq .faq-node:focus-visible::before {
  background: var(--ember);
  border-color: var(--ember);
  box-shadow: 0 0 0 4px rgba(242, 118, 31, 0.2);
}

.page-faq .faq-node:focus-visible {
  outline: 2px solid var(--scoreboard);
  outline-offset: 2px;
}

@media (max-width: 979px) {
  .page-faq .faq-tree-title {
    padding-left: 0;
    margin-bottom: 10px;
  }
  .page-faq .faq-tree-list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
  }
  .page-faq .faq-tree-list::before {
    display: none;
  }
  .page-faq .faq-tree-list > li {
    flex: 0 0 auto;
  }
  .page-faq .faq-node {
    padding: 8px 14px;
    font-size: 14px;
    white-space: nowrap;
    background: var(--paper);
    border: 1px solid var(--rule);
    border-radius: 999px;
  }
  .page-faq .faq-node::before {
    display: none;
  }
}

/* ---------- 右侧问答流 ---------- */
.page-faq .faq-stream {
  display: grid;
  gap: 56px;
  min-width: 0;
}

.page-faq .faq-group {
  counter-reset: qa;
  scroll-margin-top: 32px;
  min-width: 0;
}

.page-faq .faq-group-head {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--dirt);
}

.page-faq .faq-group-index {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--pitch-deep);
  padding: 3px 9px;
  border-radius: 4px;
}

.page-faq .faq-group-title {
  margin: 0;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

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

/* ---------- 折叠条目 ---------- */
.page-faq .qa {
  counter-increment: qa;
  background: var(--pitch-light);
  border: 1px solid var(--rule);
  border-radius: 10px;
  transition: box-shadow 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .qa[open] {
  background: var(--paper);
  box-shadow: inset 3px 0 0 var(--dirt);
}

.page-faq .qa:target {
  box-shadow: inset 3px 0 0 var(--ember);
}

.page-faq .qa > summary {
  display: grid;
  grid-template-columns: var(--faq-qcol) minmax(0, 1fr);
  gap: var(--faq-qgap);
  align-items: start;
  list-style: none;
  cursor: pointer;
  position: relative;
  margin: 0;
  padding: 15px 46px 15px 14px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  border-radius: 10px;
}

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

.page-faq .qa > summary::before {
  content: counter(qa, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--pitch-deep);
  background: rgba(19, 92, 56, 0.12);
  border-radius: 999px;
  text-align: center;
  padding: 2px 0;
  line-height: 1.5;
}

.page-faq .qa > summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  color: var(--dirt);
}

.page-faq .qa[open] > summary::after {
  content: "\2212";
}

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

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

.page-faq .qa-body {
  padding: 0 46px 18px calc(14px + var(--faq-qcol) + var(--faq-qgap));
  max-width: 40em;
}

.page-faq .qa-body p {
  margin: 0 0 0.85em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

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

.page-faq .qa-body a {
  color: var(--dirt);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

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

@media (max-width: 560px) {
  .page-faq .qa {
    --faq-qcol: 22px;
    --faq-qgap: 8px;
  }
  .page-faq .qa > summary {
    padding: 13px 40px 13px 12px;
    font-size: 15px;
  }
  .page-faq .qa > summary::after {
    right: 13px;
    top: 13px;
  }
  .page-faq .qa-body {
    padding: 0 18px 16px calc(12px + var(--faq-qcol) + var(--faq-qgap));
  }
  .page-faq .qa-body p {
    font-size: 14.5px;
  }
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--rule);
  object-fit: cover;
}

.page-faq .faq-figure--tall img {
  max-width: 340px;
}

.page-faq .faq-figure .media__cap {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--pitch-deep);
}

/* ---------- 结尾联系 ---------- */
.page-faq .faq-outro {
  border-radius: var(--radius);
  background: var(--pitch-deep);
  color: var(--paper);
  padding: 28px 24px 32px;
  margin-top: 8px;
}

@media (min-width: 720px) {
  .page-faq .faq-outro {
    padding: 40px 36px 44px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    grid-template-areas:
      "title contact"
      "text contact"
      "cta contact";
    gap: 0 40px;
    align-content: start;
  }
}

.page-faq .faq-outro-title {
  grid-area: title;
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-outro-text {
  grid-area: text;
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(248, 244, 237, 0.86);
  max-width: 34em;
}

.page-faq .faq-contact {
  grid-area: contact;
  margin: 0 0 22px;
  padding: 0;
}

.page-faq .faq-contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(248, 244, 237, 0.28);
}

.page-faq .faq-contact-row:first-child {
  border-top: 1px dashed rgba(248, 244, 237, 0.28);
}

.page-faq .faq-contact-row dt {
  flex: 0 0 auto;
  min-width: 76px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--scoreboard);
}

.page-faq .faq-contact-row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-outro .btn {
  grid-area: cta;
  justify-self: start;
}

@media (max-width: 719px) {
  .page-faq .faq-outro .btn {
    margin-top: 4px;
  }
}