.page-faq {
  --faq-radius: 18px;
  --faq-rule: 1px solid var(--line-soft);
  --faq-copper-soft: rgba(184, 115, 51, .42);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4.6vw, 52px) 0 clamp(18px, 3vw, 30px);
  max-width: 780px;
}

.page-faq .faq-hero__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--copper);
}

.page-faq .faq-hero__meta::after {
  content: "";
  flex: 1;
  max-width: 190px;
  height: 1px;
  background: linear-gradient(90deg, var(--copper), transparent);
}

.page-faq .faq-hero__title {
  margin: 18px 0 0;
  font-size: clamp(30px, 5.2vw, 50px);
  line-height: 1.2;
  letter-spacing: .055em;
  color: var(--mist);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 33em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.88;
  color: var(--sand);
}

/* ---------- 跳转条 ---------- */
.page-faq .faq-jump {
  display: grid;
  gap: 12px;
  margin: clamp(18px, 3vw, 28px) 0 clamp(26px, 4vw, 46px);
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(18, 38, 31, .92), rgba(6, 15, 13, .86));
}

.page-faq .faq-jump__prefix {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--steel);
}

.page-faq .faq-jump__prefix::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 158, 44, .16);
}

.page-faq .faq-jump__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump__link {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--mist);
  text-decoration: none;
  transition: border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--copper-lit);
  color: var(--copper-lit);
  background: rgba(184, 115, 51, .12);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  display: grid;
  gap: 20px;
  padding: clamp(30px, 5vw, 56px) 0;
  border-top: var(--faq-rule);
}

.page-faq .faq-group__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--copper);
}

.page-faq .faq-group__title {
  margin: 10px 0 0;
  font-size: clamp(21px, 2.7vw, 28px);
  line-height: 1.38;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .faq-group__scene {
  margin: 12px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--copper);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--sand);
}

.page-faq .faq-group--steel .faq-group__num { color: var(--steel); }
.page-faq .faq-group--steel .faq-group__scene { border-left-color: var(--steel); }

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

.page-faq .faq-group__foot {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--sand);
}

.page-faq .faq-group__foot a,
.page-faq .qa__a a {
  color: var(--copper-lit);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-group__foot a:hover,
.page-faq .qa__a a:hover {
  color: var(--amber);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--ink-2);
  overflow: hidden;
  transition: border-color .25s var(--ease);
}

.page-faq .qa + .qa { margin-top: 10px; }

.page-faq .qa[open] { border-color: var(--faq-copper-soft); }

.page-faq .qa__q {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  font-size: clamp(15.5px, 1.7vw, 18px);
  line-height: 1.6;
  letter-spacing: .03em;
  color: var(--mist);
}

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

.page-faq .qa__q::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--copper), transparent 72%);
  opacity: 0;
  transition: opacity .25s var(--ease);
}

.page-faq .qa[open] .qa__q::before { opacity: 1; }
.page-faq .qa[open] .qa__q { color: var(--copper-lit); }

.page-faq .qa__q::after {
  content: "";
  flex: none;
  margin-left: auto;
  width: 11px;
  height: 11px;
  border-right: 1.5px solid var(--copper);
  border-bottom: 1.5px solid var(--copper);
  transform: rotate(45deg) translateY(-2px);
  transition: transform .25s var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  transform: rotate(225deg) translateY(-2px);
}

.page-faq .qa__a {
  padding: 13px 18px 18px;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--sand);
}

.page-faq .qa__a p { margin: 0; }
.page-faq .qa__a p + p { margin-top: 10px; }

.faq-num,
.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: .92em;
  padding: 1px 7px;
  border: 1px solid var(--faq-copper-soft);
  border-radius: 6px;
  background: rgba(184, 115, 51, .16);
  color: var(--copper-lit);
  white-space: nowrap;
}

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
  counter-reset: faqstep;
}

.page-faq .faq-steps__item {
  counter-increment: faqstep;
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--mist);
}

.page-faq .faq-steps__item::before {
  content: counter(faqstep, decimal-leading-zero);
  width: 30px;
  height: 30px;
  border: 1px solid var(--copper);
  border-radius: 50%;
  background: rgba(184, 115, 51, .12);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 28px;
  text-align: center;
  color: var(--copper-lit);
}

.page-faq .faq-steps__item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 15px;
  top: 34px;
  bottom: -16px;
  width: 1px;
  background: linear-gradient(180deg, rgba(184, 115, 51, .5), rgba(28, 58, 49, 0));
}

/* ---------- 左右分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: 22px;
}

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

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

.page-faq .faq-split__media .media-frame {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--ink-2);
}

.page-faq .faq-split__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-split__media .media-frame__caption {
  padding: 10px 14px 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--sand);
}

/* ---------- 数值条 ---------- */
.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-stats__item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--ink-2);
}

.page-faq .faq-stats__value {
  display: block;
  font-size: 26px;
  letter-spacing: .04em;
  color: var(--copper-lit);
}

.page-faq .faq-stats__label {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sand);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  position: relative;
  margin: clamp(30px, 5vw, 56px) 0 clamp(36px, 6vw, 72px);
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid rgba(255, 158, 44, .48);
  border-radius: 22px;
  overflow: hidden;
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(255, 158, 44, .16), transparent 58%),
    var(--ink-2);
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--amber), var(--copper));
}

.page-faq .faq-cta__title {
  margin: 0;
  font-size: clamp(21px, 2.9vw, 30px);
  line-height: 1.4;
  letter-spacing: .05em;
  color: var(--mist);
}

.page-faq .faq-cta__text {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--sand);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-jump {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    padding: 12px 22px;
    border-radius: 999px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 26px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-group {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-group__aside {
    position: sticky;
    top: 96px;
  }
}

@media (max-width: 559px) {
  .page-faq .qa__q {
    padding: 14px 14px;
    font-size: 15.5px;
  }

  .page-faq .qa__q::before { left: 14px; right: 14px; }

  .page-faq .qa__a { padding: 12px 14px 16px; }

  .page-faq .faq-steps__item {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 12px;
  }

  .page-faq .faq-steps__item::before {
    width: 26px;
    height: 26px;
    line-height: 24px;
    font-size: 11px;
  }

  .page-faq .faq-steps__item:not(:last-child)::after {
    left: 13px;
    top: 30px;
  }

  .page-faq .faq-cta__actions .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__q::before,
  .page-faq .qa__q::after,
  .page-faq .faq-jump__link {
    transition: none;
  }
}