.page-faq {
  --fq-side-w: 300px;
  --fq-sticky-top: 96px;
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-faq .xk-crumbs {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

/* ---------- 首屏 ---------- */
.page-faq .fq-hero {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
  padding-block: clamp(1.25rem, 3.5vw, 2.5rem) clamp(1.75rem, 4vw, 3rem);
}

.page-faq .fq-title {
  margin: 0.55rem 0 1rem;
  font-size: clamp(1.95rem, 6.4vw, 3.75rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--xk-white);
  max-width: 22ch;
}

.page-faq .fq-lead {
  color: var(--xk-gray);
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  line-height: 1.8;
  max-width: 38ch;
  margin: 0;
}

.page-faq .fq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .fq-quick li {
  display: inline-flex;
  align-items: baseline;
  gap: 0.3rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--xk-line-soft);
  border-radius: var(--xk-pill);
  background: rgba(12, 18, 48, 0.6);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--xk-gray);
  white-space: nowrap;
}

.page-faq .fq-quick .xk-num {
  color: var(--xk-cyan);
  font-size: 0.92rem;
}

.page-faq .fq-hero__media {
  border-radius: var(--xk-radius-l);
  overflow: hidden;
  border: 1px solid var(--xk-line-soft);
  margin: 0;
}

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

/* ---------- 分组胶囊 ---------- */
.page-faq .fq-cats {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.35rem 0 1rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--xk-line-soft);
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .fq-cats::-webkit-scrollbar { display: none; }

.page-faq .fq-cat {
  flex: 0 0 auto;
  padding: 0.55rem 1rem;
  border: 1px solid var(--xk-line-soft);
  border-radius: var(--xk-pill);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--xk-gray);
  text-decoration: none;
  transition: color 0.28s var(--xk-ease), border-color 0.28s var(--xk-ease), background-color 0.28s var(--xk-ease);
}

.page-faq .fq-cat:hover,
.page-faq .fq-cat:focus-visible {
  color: var(--xk-cyan);
  border-color: rgba(59, 240, 208, 0.55);
  background: var(--xk-cyan-soft);
  outline: none;
}

/* ---------- 主体两栏 ---------- */
.page-faq .fq-body {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}

.page-faq .fq-group {
  position: relative;
  margin-bottom: clamp(2.25rem, 6vw, 4rem);
  scroll-margin-top: var(--fq-sticky-top);
}

.page-faq .fq-group:last-child { margin-bottom: 0; }

.page-faq .fq-group__head {
  margin-bottom: 1.25rem;
}

.page-faq .fq-group__title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--xk-white);
}

.page-faq .fq-group__note {
  margin: 0;
  max-width: 38ch;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--xk-gray);
}

/* ---------- 折叠问答 ---------- */
.page-faq .fq-qa {
  border-top: 1px solid var(--xk-line-soft);
}

.page-faq .fq-qa:last-of-type {
  border-bottom: 1px solid var(--xk-line-soft);
}

.page-faq .fq-qa > summary {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr) 1.35rem;
  gap: 0.7rem;
  align-items: start;
  padding: 1.05rem 0;
  cursor: pointer;
  list-style: none;
  transition: color 0.28s var(--xk-ease);
}

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

.page-faq .fq-qa > summary:hover .fq-qa__q,
.page-faq .fq-qa > summary:focus-visible .fq-qa__q {
  color: var(--xk-cyan);
}

.page-faq .fq-qa > summary:focus-visible {
  outline: 1px solid rgba(59, 240, 208, 0.5);
  outline-offset: 4px;
  border-radius: var(--xk-radius-s);
}

.page-faq .fq-qa__no {
  font-family: var(--xk-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--xk-violet);
  padding-top: 0.28rem;
}

.page-faq .fq-qa__q {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--xk-white);
  transition: color 0.28s var(--xk-ease);
}

.page-faq .fq-qa__mark {
  position: relative;
  width: 1.35rem;
  height: 1.35rem;
  margin-top: 0.2rem;
  border: 1px solid var(--xk-line-soft);
  border-radius: var(--xk-pill);
  transition: border-color 0.28s var(--xk-ease), background-color 0.28s var(--xk-ease);
}

.page-faq .fq-qa__mark::before,
.page-faq .fq-qa__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.55rem;
  height: 1px;
  background: var(--xk-gray);
  transform: translate(-50%, -50%);
  transition: transform 0.3s var(--xk-ease), background-color 0.28s var(--xk-ease);
}

.page-faq .fq-qa__mark::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .fq-qa[open] .fq-qa__mark {
  border-color: rgba(59, 240, 208, 0.55);
  background: var(--xk-cyan-soft);
}

.page-faq .fq-qa[open] .fq-qa__mark::before,
.page-faq .fq-qa[open] .fq-qa__mark::after {
  background: var(--xk-cyan);
}

.page-faq .fq-qa[open] .fq-qa__mark::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-faq .fq-qa__a {
  margin: 0;
  padding: 0 0 1.35rem 2.8rem;
  max-width: 38ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--xk-gray);
}

.page-faq .fq-qa__a .xk-num {
  color: var(--xk-cyan);
  font-size: 0.98rem;
}

/* ---------- 纠错章节背景 ---------- */
.page-faq .fq-group--media {
  padding: clamp(1.1rem, 3vw, 2rem);
  border: 1px solid var(--xk-line-soft);
  border-radius: var(--xk-radius-l);
  background: linear-gradient(160deg, rgba(12, 18, 48, 0.95), rgba(6, 10, 28, 0.9));
  overflow: hidden;
}

.page-faq .fq-group--media > * {
  position: relative;
  z-index: 1;
}

.page-faq .fq-bgmedia {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: 0;
  opacity: 0.2;
  pointer-events: none;
}

.page-faq .fq-bgmedia img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 右侧纠错流程 ---------- */
.page-faq .fq-flow {
  padding: 1.35rem 1.3rem 1.5rem;
  border: 1px solid var(--xk-line-soft);
  border-radius: var(--xk-radius-l);
  background: linear-gradient(180deg, var(--xk-night), rgba(6, 10, 28, 0.75));
}

.page-faq .fq-flow__title {
  margin: 0.75rem 0 0;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--xk-white);
}

.page-faq .fq-steps {
  list-style: none;
  display: grid;
  gap: 1.05rem;
  margin: 1.35rem 0 0;
  padding: 0;
}

.page-faq .fq-steps li {
  position: relative;
  display: grid;
  grid-template-columns: 1.7rem minmax(0, 1fr);
  gap: 0.6rem;
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--xk-gray);
}

.page-faq .fq-steps li::before {
  content: "";
  position: absolute;
  left: 0.52rem;
  top: 1.35rem;
  bottom: -1.05rem;
  width: 1px;
  background: linear-gradient(180deg, rgba(59, 240, 208, 0.55), rgba(154, 107, 255, 0.2));
}

.page-faq .fq-steps li:last-child::before { display: none; }

.page-faq .fq-steps__no {
  font-family: var(--xk-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--xk-cyan);
  padding-top: 0.15rem;
}

.page-faq .fq-flow__foot {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--xk-line-soft);
}

.page-faq .fq-flow__label {
  margin: 0 0 0.35rem;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--xk-gray);
}

.page-faq .fq-email {
  margin: 0 0 0.85rem;
  font-family: var(--xk-font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--xk-white);
  word-break: break-all;
}

.page-faq .fq-flow__note {
  margin: 0.85rem 0 0;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--xk-gray);
}

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

/* ---------- 术语速查 ---------- */
.page-faq .fq-terms {
  margin: 0;
  border-top: 1px solid var(--xk-line-soft);
}

.page-faq .fq-term {
  display: grid;
  gap: 0.3rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--xk-line-soft);
}

.page-faq .fq-term dt {
  font-family: var(--xk-font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  color: var(--xk-cyan);
}

.page-faq .fq-term dd {
  margin: 0;
  max-width: 38ch;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--xk-gray);
}

/* ---------- 相关入口 ---------- */
.page-faq .fq-more {
  margin-top: clamp(2rem, 5vw, 3.25rem);
  padding-top: clamp(1.5rem, 4vw, 2.25rem);
  border-top: 1px solid var(--xk-line-soft);
}

.page-faq .fq-links {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.25rem;
}

.page-faq .fq-link {
  display: block;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--xk-line-soft);
  border-radius: var(--xk-radius-m);
  background: rgba(12, 18, 48, 0.5);
  text-decoration: none;
  transition: border-color 0.28s var(--xk-ease), background-color 0.28s var(--xk-ease), transform 0.28s var(--xk-ease);
}

.page-faq .fq-link:hover,
.page-faq .fq-link:focus-visible {
  border-color: rgba(59, 240, 208, 0.45);
  background: var(--xk-cyan-soft);
  transform: translateY(-2px);
  outline: none;
}

.page-faq .fq-link__t {
  display: block;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--xk-white);
}

.page-faq .fq-link__d {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--xk-gray);
}

/* ---------- 响应式 ---------- */
@media (max-width: 560px) {
  .page-faq .fq-qa > summary {
    grid-template-columns: 1.7rem minmax(0, 1fr) 1.2rem;
    gap: 0.5rem;
  }

  .page-faq .fq-qa__a {
    padding-left: 0;
  }

  .page-faq .fq-qa__a {
    max-width: none;
  }
}

@media (min-width: 900px) {
  .page-faq .fq-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-faq .fq-hero__media {
    justify-self: end;
    width: 100%;
  }
}

@media (min-width: 1000px) {
  .page-faq .fq-body {
    grid-template-columns: minmax(0, 1fr) var(--fq-side-w);
  }

  .page-faq .fq-side {
    position: sticky;
    top: var(--fq-sticky-top);
  }

  .page-faq .fq-term {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 1.5rem;
    align-items: baseline;
    padding: 1.05rem 0;
  }

  .page-faq .fq-links {
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .fq-link:hover,
  .page-faq .fq-link:focus-visible {
    transform: none;
  }
}