.page-faq {
  --faq-index-w: 220px;
  --faq-sticky: 96px;
}

/* 首屏 */
.page-faq .faq-hero {
  padding-top: var(--sp-4);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--sp-2);
  margin-top: var(--sp-3);
}

.page-faq .faq-hero__grid .eyebrow {
  margin: 0;
}

.page-faq .faq-hero__grid .display {
  margin: 0;
  max-width: 22ch;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 66ch;
}

.page-faq .faq-hero__figure {
  margin: var(--sp-4) 0 0;
}

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

/* 首屏指标条 */
.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3) var(--sp-2);
  margin: var(--sp-4) 0 0;
  padding-top: var(--sp-3);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-stat__label {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-faq .faq-stat__value {
  margin: 6px 0 0;
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(22px, 4vw, 30px);
  line-height: 1.1;
  color: var(--lime);
}

/* 双栏布局 */
.page-faq .faq-layout {
  display: grid;
  gap: var(--sp-4);
}

.page-faq .faq-index {
  border-top: 2px solid var(--lime);
  padding-top: var(--sp-2);
}

.page-faq .faq-index .eyebrow {
  margin: 0;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: var(--sp-2) 0 0;
  padding: 0;
  display: flex;
  gap: var(--sp-2);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__item {
  margin: 0;
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 6px 0;
  font-size: 15px;
  color: var(--muted);
  text-decoration: none;
  transition: color 120ms ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--text);
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--lime);
}

/* 分组 */
.page-faq .faq-groups {
  display: grid;
  gap: var(--sp-3);
  min-width: 0;
}

.page-faq .faq-group {
  padding: var(--sp-4) var(--sp-3);
  border-radius: var(--radius);
  scroll-margin-top: var(--faq-sticky);
  min-width: 0;
}

.page-faq .faq-group--alt {
  background: var(--ink-2);
}

.page-faq .faq-group__head {
  display: grid;
  gap: var(--sp-1);
  margin-bottom: var(--sp-3);
}

.page-faq .faq-group__num {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.page-faq .faq-group__num::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--lime);
}

.page-faq .faq-group__head .h2 {
  margin: 0;
}

.page-faq .faq-group__note {
  margin: 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

/* 分组内配图 */
.page-faq .faq-media {
  margin: 0 0 var(--sp-3);
  max-width: 100%;
}

/* 问答折叠 */
.page-faq .faq-list {
  margin-top: var(--sp-2);
}

.page-faq .faq-q {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-q__summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: var(--sp-3) 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(16px, 2vw, 18px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.5;
  color: var(--text);
  transition: color 120ms ease;
}

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

.page-faq .faq-q__summary::marker {
  content: "";
}

.page-faq .faq-q__summary:hover,
.page-faq .faq-q__summary:focus-visible {
  color: var(--lime);
}

.page-faq .faq-q__summary:focus-visible {
  outline: 1px solid var(--lime);
  outline-offset: 4px;
}

.page-faq .faq-sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 7px;
}

.page-faq .faq-sign::before,
.page-faq .faq-sign::after {
  content: "";
  position: absolute;
  background: var(--lime);
  transition: transform 240ms ease, opacity 240ms ease;
}

.page-faq .faq-sign::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .faq-sign::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

.page-faq .faq-q[open] .faq-sign::after {
  transform: scaleY(0);
}

.page-faq .faq-q__answer {
  padding: 0 var(--sp-2) var(--sp-3) 0;
}

.page-faq .faq-q__answer p {
  margin: 0 0 var(--sp-2);
  max-width: 70ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
}

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

.page-faq .faq-q__answer strong {
  color: var(--text);
  font-weight: 800;
}

/* 联系面板 */
.page-faq .faq-contact {
  margin-top: var(--sp-3);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: var(--sp-3);
}

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

.page-faq .faq-contact__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-contact__value {
  margin: var(--sp-1) 0 6px;
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* 底部去路 */
.page-faq .faq-next {
  padding-bottom: var(--sp-6);
}

.page-faq .faq-next .h2 {
  margin: 0;
}

.page-faq .faq-next__list {
  list-style: none;
  margin: var(--sp-3) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-next__item {
  margin: 0;
  background: var(--ink);
}

.page-faq .faq-next__link {
  display: block;
  padding: var(--sp-2) var(--sp-3);
  text-decoration: none;
  transition: background 120ms ease;
}

.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  background: var(--ink-2);
}

.page-faq .faq-next__name {
  display: block;
  font-weight: 800;
  font-size: 15px;
  color: var(--lime);
}

.page-faq .faq-next__desc {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-faq .faq-media {
    max-width: 460px;
  }

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

  .page-faq .faq-stats {
    gap: var(--sp-3) var(--sp-4);
  }

  .page-faq .faq-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 桌面：左侧索引吸顶 + 右栏问答流 */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding-top: var(--sp-5);
  }

  .page-faq .faq-hero__grid {
    margin-top: var(--sp-4);
  }

  .page-faq .faq-hero__figure {
    margin-top: var(--sp-5);
  }

  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: var(--sp-5);
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: var(--sp-5);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    border-top: none;
    padding-top: 0;
  }

  .page-faq .faq-index__list {
    display: grid;
    gap: 2px;
    overflow: visible;
  }

  .page-faq .faq-index__item {
    flex: none;
  }

  .page-faq .faq-index__link {
    display: flex;
    padding: 10px 0 10px 14px;
    border-left: 2px solid var(--line);
    white-space: normal;
    transition: color 120ms ease, border-color 120ms ease;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--lime);
  }

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