.page-faq {
  --faq-rail: 224px;
  --faq-gap: 44px;
  --faq-indent: 52px;
  position: relative;
  display: block;
  color: var(--paper);
  background:
    radial-gradient(120% 70% at 8% 0%, rgba(30, 58, 44, .9) 0%, rgba(11, 20, 16, 0) 60%),
    radial-gradient(90% 60% at 100% 100%, rgba(20, 38, 30, .7) 0%, rgba(11, 20, 16, 0) 58%),
    var(--ink-900);
  padding-bottom: 72px;
  overflow-x: hidden;
}

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 34px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -30%;
  width: 78%;
  height: 260px;
  background: linear-gradient(102deg, rgba(200, 255, 61, .16), rgba(200, 255, 61, 0) 70%);
  transform: skewY(-7deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .crumb {
  margin-bottom: 22px;
  font-size: 13px;
  color: var(--ash);
}

.page-faq .crumb a {
  color: var(--ash);
  text-decoration: none;
}

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

.page-faq .kicker {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 12px;
  border: 1px solid rgba(200, 255, 61, .42);
  border-radius: 2px;
  color: var(--lime);
  font-size: 12px;
  letter-spacing: .16em;
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 9vw, 64px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  max-width: 44em;
  margin: 0 0 28px;
  color: var(--ash);
  font-size: 16px;
  line-height: 1.85;
}

.page-faq .faq-quick {
  display: flex;
  gap: 10px;
  margin: 0 0 30px;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-quick__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(20, 38, 30, .72);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .22s var(--ease), color .22s var(--ease), transform .22s var(--ease);
}

.page-faq .faq-quick__link:hover {
  border-color: var(--lime);
  color: var(--lime);
  transform: translateY(-2px);
}

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

.page-faq .faq-meter {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  border: 1px solid var(--line-soft);
  background: var(--line-soft);
}

.page-faq .faq-meter__cell {
  padding: 14px 16px;
  background: rgba(11, 20, 16, .78);
}

.page-faq .faq-meter__label {
  margin: 0 0 4px;
  color: var(--ash);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-faq .faq-meter__value {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--lime);
}

.page-faq .faq-num--amber {
  color: var(--amber);
}

.page-faq .faq-meter__unit {
  margin-left: 6px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 400;
  color: var(--ash);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: 32px;
}

/* ---------- 左栏目录 ---------- */
.page-faq .faq-toc {
  border: 1px solid var(--line-soft);
  background: rgba(20, 38, 30, .55);
  padding: 16px 16px 14px;
}

.page-faq .faq-toc__head {
  margin: 0 0 12px;
  color: var(--ash);
  font-size: 12px;
  letter-spacing: .16em;
}

.page-faq .faq-toc__list {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 6px;
  border-left: 2px solid transparent;
  color: var(--ash);
  font-size: 14px;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-toc__link:hover {
  color: var(--paper);
  border-left-color: var(--moss);
  background: rgba(30, 58, 44, .6);
}

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

.page-faq .faq-toc__back {
  display: inline-block;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
  width: 100%;
  color: var(--ash);
  font-size: 13px;
  text-decoration: none;
}

.page-faq .faq-toc__back:hover {
  color: var(--lime);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-panels {
  display: grid;
  gap: 40px;
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: calc(var(--head-h) + 20px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  padding-bottom: 12px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__no {
  font-size: 15px;
  color: var(--lime);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 5.2vw, 30px);
  letter-spacing: -.01em;
  line-height: 1.2;
  color: var(--paper);
  transition: color .25s var(--ease);
}

.page-faq .faq-group:target .faq-group__title {
  color: var(--lime);
}

.page-faq .faq-group__mark {
  margin-left: auto;
  padding: 3px 10px;
  border: 1px solid rgba(201, 123, 74, .6);
  border-radius: 2px;
  background: rgba(201, 123, 74, .16);
  color: var(--clay);
  font-size: 12px;
  letter-spacing: .1em;
}

/* ---------- 折叠面板 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 4.2vw, 20px);
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--paper);
  transition: background .2s var(--ease), box-shadow .2s var(--ease);
}

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

.page-faq .faq-item > summary:hover {
  background: rgba(30, 58, 44, .55);
}

.page-faq .faq-item[open] > summary {
  box-shadow: inset 0 -1px 0 var(--lime);
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  padding-top: 3px;
  font-size: 13px;
  color: var(--ash);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--lime);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 6px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 16px;
  height: 1px;
  background: var(--ash);
  transition: transform .24s var(--ease), background .24s var(--ease);
}

.page-faq .faq-item__sign::after {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__sign::before,
.page-faq .faq-item[open] .faq-item__sign::after {
  background: var(--lime);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: rotate(0deg);
}

.page-faq .faq-item__answer {
  padding: 2px 4px 22px var(--faq-indent);
  animation: faq-unfold .3s var(--ease);
}

.page-faq .faq-item__answer p {
  margin: 0;
  max-width: 42em;
  color: var(--ash);
  font-size: 15.5px;
  line-height: 1.95;
}

.page-faq .faq-item__answer a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, .35);
}

.page-faq .faq-item__answer a:hover {
  border-bottom-color: var(--lime);
}

@keyframes faq-unfold {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 图与返回 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 8px;
  border: 1px solid var(--line-soft);
  background: rgba(20, 38, 30, .5);
}

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

.page-faq .faq-figure .figure__caption {
  padding: 12px 16px 14px;
  color: var(--ash);
  font-size: 13px;
  line-height: 1.7;
}

.page-faq .faq-back {
  display: inline-block;
  margin-top: 14px;
  color: var(--ash);
  font-size: 13px;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-back:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---------- 尾部提示 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(120deg, rgba(30, 58, 44, .9), rgba(11, 20, 16, .9));
  box-shadow: 0 12px 32px rgba(0, 0, 0, .28);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 34em;
  color: var(--paper);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 40px 0 44px;
  }

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

  .page-faq .faq-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 28px 28px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero {
    padding: 56px 0 56px;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
    padding-top: 44px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--head-h) + 24px);
    align-self: start;
    padding: 20px 18px 16px;
  }

  .page-faq .faq-panels {
    gap: 56px;
  }

  .page-faq .faq-item > summary {
    padding: 22px 6px;
  }

  .page-faq .faq-item__answer {
    padding-bottom: 26px;
    padding-right: 24px;
  }

  .page-faq .faq-item__answer p {
    font-size: 16px;
  }
}

@media (min-width: 1240px) {
  .page-faq {
    --faq-rail: 248px;
    --faq-gap: 60px;
  }
}