.page-faq {
  --faq-sticky: 112px;
  --faq-card: var(--paper-pure);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background: var(--green-900);
  color: var(--paper);
}

.page-faq .faq-hero-inner {
  padding-top: 42px;
  padding-bottom: 38px;
}

.page-faq .faq-hero .eyebrow {
  color: var(--yellow);
  letter-spacing: 0.14em;
  margin: 0 0 14px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(27px, 5.4vw, 46px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 0 0 16px;
  max-width: 20ch;
}

.page-faq .faq-hero .lead {
  color: rgba(246, 244, 239, 0.82);
  font-size: 16px;
  line-height: 1.78;
  max-width: 62ch;
  margin: 0;
}

.page-faq .faq-hero-foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(111, 191, 151, 0.35);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--green-300);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: 38px 0 76px;
}

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

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.page-faq .faq-index-list li {
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 4px;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-faq .faq-index-list a .mono {
  color: var(--green-600);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  color: var(--green-600);
  padding-left: 10px;
}

.page-faq .faq-index-note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: 6px;
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
}

.page-faq .faq-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  min-width: 36px;
  height: 24px;
  padding: 0 8px;
  background: var(--green-600);
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
}

.page-faq .faq-group-head h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(19px, 2.6vw, 24px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0;
}

.page-faq .faq-group-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  background: var(--faq-card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--rule);
  border-radius: var(--radius);
  margin-bottom: 10px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--green-300);
  border-left-color: var(--green-300);
}

.page-faq .faq-item[open] {
  border-left-color: var(--green-600);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  border-radius: var(--radius);
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--green-600);
  outline-offset: 2px;
}

.page-faq .faq-mark {
  flex: 0 0 auto;
  color: var(--green-600);
  font-size: 18px;
  line-height: 1.35;
  transition: transform 0.22s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-mark {
  transform: rotate(45deg);
  color: var(--yellow);
}

.page-faq .faq-a {
  padding: 0 16px 16px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-soft);
  max-width: 64ch;
}

.page-faq .faq-a p {
  margin: 12px 0 0;
}

.page-faq .faq-a a {
  color: var(--green-600);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-a a:hover {
  color: var(--teal);
}

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

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

.page-faq .img-frame__caption {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
}

/* ---------- 判别小表 ---------- */
.page-faq .faq-lookup-wrap {
  margin-top: 26px;
  border-top: 1px solid var(--rule);
  padding-top: 18px;
}

.page-faq .faq-lookup-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--green-600);
}

.page-faq .faq-lookup {
  font-size: 14.5px;
}

.page-faq .faq-lookup th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-align: left;
  color: var(--ink-soft);
  white-space: nowrap;
}

.page-faq .faq-lookup td {
  line-height: 1.6;
}

.page-faq .faq-lookup td.num {
  white-space: nowrap;
  color: var(--ink);
}

/* ---------- 分隔窄带 ---------- */
.page-faq .faq-rule {
  height: 1px;
  background: var(--rule);
  margin: 46px 0 40px;
}

/* ---------- 中段通栏 ---------- */
.page-faq .faq-break {
  background: var(--green-300);
  border-top: 1px solid var(--green-600);
  border-bottom: 1px solid var(--green-600);
  margin: 44px 0;
  padding: 26px 20px;
}

.page-faq .faq-break-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: center;
}

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

.page-faq .faq-break-text p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--green-900);
}

.page-faq .faq-break-kicker {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--green-900);
  opacity: 0.75;
}

/* ---------- 结尾求助块 ---------- */
.page-faq .faq-help {
  margin-top: 52px;
  background: var(--green-900);
  color: var(--paper);
  border-radius: var(--radius);
  padding: 28px 22px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .faq-help h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 2.8vw, 26px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: #fff;
  margin: 12px 0 12px;
}

.page-faq .faq-help-body > p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(246, 244, 239, 0.84);
  max-width: 52ch;
}

.page-faq .faq-help-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid rgba(111, 191, 151, 0.3);
}

.page-faq .faq-help-list li {
  position: relative;
  padding: 9px 0 9px 18px;
  border-bottom: 1px solid rgba(111, 191, 151, 0.3);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .faq-help-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 8px;
  height: 2px;
  background: var(--yellow);
}

.page-faq .faq-help-cta {
  margin: 22px 0 0;
}

.page-faq .faq-help-contact {
  border-left: 2px solid var(--green-300);
  padding-left: 18px;
}

.page-faq .faq-help-key {
  margin: 0 0 4px;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--green-300);
}

.page-faq .faq-help-value {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.6;
  color: #fff;
  word-break: break-word;
}

.page-faq .faq-help-note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(246, 244, 239, 0.68);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero-inner {
    padding-top: 54px;
    padding-bottom: 48px;
  }

  .page-faq .faq-break-inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 28px;
  }

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    padding: 34px 32px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 218px minmax(0, 1fr);
    gap: 52px;
    padding: 48px 0 96px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    align-self: start;
  }

  .page-faq .faq-item > summary {
    padding: 16px 20px;
    font-size: 16.5px;
  }

  .page-faq .faq-a {
    padding: 0 20px 18px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-group-body--with-figure {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 30px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-list a,
  .page-faq .faq-item,
  .page-faq .faq-mark {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-mark {
    transform: none;
  }
}