.page-faq {
  --faq-rail: 3.5rem;
  --faq-qa-line: var(--seam);
  --faq-link: var(--pitch-soft);
  background: var(--brick);
  color: var(--mortar-light);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(3rem, 7vw, 5rem);
  background:
    repeating-linear-gradient(180deg, var(--seam) 0 1px, transparent 1px 56px),
    linear-gradient(180deg, var(--mortar-deep) 0%, var(--brick) 78%);
  border-bottom: 3px solid var(--mortar-deep);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.25rem, 5vw, 3rem);
  align-items: start;
}

.page-faq .faq-hero .eyebrow {
  color: var(--pitch-soft);
}

.page-faq .faq-hero__title {
  margin: 0.5rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__lede {
  margin: 0 0 1.25rem;
  max-width: 48ch;
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  color: rgba(239, 235, 225, 0.9);
}

.page-faq .faq-hero__note {
  margin: 0;
  padding-left: 1rem;
  max-width: 44ch;
  border-left: 3px solid var(--stoppage);
  font-size: 0.92rem;
  color: var(--index-gray);
}

/* 目录索引 */
.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--seam);
}

.page-faq .faq-index__list li {
  border-bottom: 1px solid var(--seam);
}

.page-faq .faq-index__list a {
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  grid-template-areas:
    "no label"
    ". hint";
  gap: 0.2rem 0.9rem;
  padding: 0.95rem 0.25rem;
  color: inherit;
  text-decoration: none;
  transition: background var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: rgba(46, 107, 69, 0.42);
  padding-left: 0.75rem;
}

.page-faq .faq-index__no {
  grid-area: no;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--pitch-soft);
}

.page-faq .faq-index__label {
  grid-area: label;
  font-family: var(--font-display);
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}

.page-faq .faq-index__hint {
  grid-area: hint;
  font-size: 0.85rem;
  color: var(--index-gray);
}

/* ---------- 分组通用 ---------- */
.page-faq .faq-group {
  padding: clamp(2.75rem, 6vw, 4.5rem) 0;
  border-bottom: 1px solid var(--seam);
}

.page-faq .faq-group--paper {
  background: var(--mortar-light);
  color: var(--mortar-deep);
  --faq-qa-line: var(--seam-dark);
  --faq-link: var(--pitch);
  border-bottom-color: var(--mortar-deep);
}

.page-faq .faq-group--board {
  background: var(--scoreboard);
  color: var(--mortar-light);
}

.page-faq .faq-head {
  display: grid;
  gap: 0.7rem;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.page-faq .faq-head__note {
  margin: 0;
  max-width: 60ch;
  font-size: 0.96rem;
  opacity: 0.85;
}

.page-faq .faq-group--paper .eyebrow {
  color: var(--pitch);
}

.page-faq .faq-group--board .eyebrow {
  color: var(--pitch-soft);
}

/* ---------- 流程阶梯 ---------- */
.page-faq .faq-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0 0 clamp(2rem, 4.5vw, 3rem);
}

.page-faq .faq-flow__step {
  padding: 1rem 1.15rem 1.2rem;
  background: var(--mortar-light);
  color: var(--mortar-deep);
  border: 2px solid var(--mortar-deep);
  box-shadow: 6px 6px 0 var(--mortar-deep);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-flow__step:hover {
  transform: translate(2px, 2px);
  border-color: var(--stoppage);
  box-shadow: 4px 4px 0 var(--stoppage);
}

.page-faq .faq-flow__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--stoppage);
}

.page-faq .faq-flow__t {
  display: block;
  margin: 0.4rem 0 0.3rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.page-faq .faq-flow__d {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.65;
  opacity: 0.86;
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--faq-qa-line);
}

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

.page-faq .qa > summary {
  display: grid;
  grid-template-columns: var(--faq-rail) 1fr 1.4rem;
  align-items: baseline;
  gap: 0.3rem 0.9rem;
  padding: 1.3rem 0.5rem 1.3rem 0.75rem;
  cursor: pointer;
  list-style: none;
  border-left: 3px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  background: rgba(214, 65, 43, 0.07);
  border-left-color: var(--stoppage);
}

.page-faq .qa[open] > summary {
  background: rgba(46, 107, 69, 0.08);
  border-left-color: var(--pitch);
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--pitch-soft);
}

.page-faq .faq-group--paper .qa__no {
  color: var(--pitch);
}

.page-faq .qa__q {
  font-size: clamp(1rem, 1.6vw, 1.14rem);
  font-weight: 700;
  line-height: 1.55;
}

.page-faq .qa__mark {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1;
  text-align: right;
  color: var(--index-gray);
}

.page-faq .qa__mark::before {
  content: "+";
}

.page-faq .qa[open] .qa__mark {
  color: var(--stoppage);
}

.page-faq .qa[open] .qa__mark::before {
  content: "\2013";
}

.page-faq .qa__body {
  padding: 0 0.5rem 1.5rem 0.75rem;
  font-size: 0.96rem;
}

.page-faq .qa__body p {
  margin: 0 0 0.85rem;
  max-width: 58ch;
}

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

.page-faq .qa__body a {
  color: var(--faq-link);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color var(--dur) var(--ease);
}

.page-faq .qa__body a:hover,
.page-faq .qa__body a:focus-visible {
  color: var(--stoppage);
}

/* ---------- 咨询前准备 ---------- */
.page-faq .faq-prep {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: start;
}

.page-faq .faq-prep__panel {
  padding: clamp(1.1rem, 2.5vw, 1.6rem);
  border: 2px solid var(--seam);
  background: rgba(239, 235, 225, 0.04);
}

.page-faq .faq-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: prep;
}

.page-faq .faq-checklist li {
  counter-increment: prep;
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 0.15rem 0.85rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--seam);
}

.page-faq .faq-checklist li:last-child {
  border-bottom: none;
  padding-bottom: 0.35rem;
}

.page-faq .faq-checklist li::before {
  content: counter(prep, decimal-leading-zero);
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--stoppage);
}

.page-faq .faq-checklist__t {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: -0.005em;
}

.page-faq .faq-checklist__d {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--index-gray);
}

.page-faq .faq-prep__cta {
  margin: 1.5rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--seam);
  font-size: 0.94rem;
}

.page-faq .faq-prep__cta a {
  color: var(--pitch-soft);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-prep__cta a:hover,
.page-faq .faq-prep__cta a:focus-visible {
  color: var(--stoppage);
}

/* ---------- 时效与边界 ---------- */
.page-faq .faq-scope {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-scope__panel {
  padding: clamp(1.25rem, 3vw, 1.9rem);
  background: var(--mortar-light);
  color: var(--mortar-deep);
  border: 2px solid var(--mortar-deep);
  box-shadow: 8px 8px 0 var(--mortar-deep);
}

.page-faq .faq-scope__panel--out {
  background: var(--brick);
  color: var(--mortar-light);
  border-color: var(--mortar-light);
  box-shadow: 8px 8px 0 var(--mortar-deep);
}

.page-faq .faq-scope__title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  letter-spacing: -0.005em;
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.9rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--seam-dark);
}

.page-faq .faq-contact__k {
  min-width: 3.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--pitch);
}

.page-faq .faq-contact__v {
  font-family: var(--font-mono);
  font-size: 0.94rem;
  word-break: break-word;
}

.page-faq .faq-outlist {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-outlist li {
  position: relative;
  padding: 0.6rem 0 0.6rem 1.5rem;
  border-bottom: 1px solid var(--seam);
  font-size: 0.94rem;
}

.page-faq .faq-outlist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.12rem;
  width: 0.7rem;
  height: 2px;
  background: var(--stoppage);
}

.page-faq .faq-scope__foot {
  margin: 1.1rem 0 0;
  font-size: 0.87rem;
  line-height: 1.7;
  opacity: 0.85;
}

/* ---------- 图片容器微调 ---------- */
.page-faq .figure-frame {
  margin: 0 0 clamp(1.75rem, 4vw, 2.5rem);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq {
    --faq-rail: 5.5rem;
  }

  .page-faq .qa__body {
    padding-left: calc(var(--faq-rail) + 0.75rem);
    padding-right: 8%;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(2.5rem, 5vw, 4.5rem);
  }

  .page-faq .faq-prep {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

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

@media (min-width: 1024px) {
  .page-faq .faq-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-flow__step:nth-child(2) {
    transform: translateY(0.6rem);
  }

  .page-faq .faq-flow__step:nth-child(3) {
    transform: translateY(1.2rem);
  }

  .page-faq .faq-flow__step:nth-child(4) {
    transform: translateY(1.8rem);
  }

  .page-faq .faq-flow__step:nth-child(2):hover,
  .page-faq .faq-flow__step:nth-child(3):hover,
  .page-faq .faq-flow__step:nth-child(4):hover {
    transform: translate(2px, calc(2px + 0.6rem));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
  }

  .page-faq .faq-flow__step,
  .page-faq .faq-flow__step:nth-child(2),
  .page-faq .faq-flow__step:nth-child(3),
  .page-faq .faq-flow__step:nth-child(4) {
    transform: none !important;
  }
}