.page-faq {
  --faq-line: rgba(27, 42, 35, 0.14);
  --faq-line-ink: rgba(239, 230, 214, 0.18);
  background: var(--paper);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(158deg, var(--ink) 0%, var(--ink-2) 56%, var(--ink-3) 100%);
  color: var(--sand);
  padding: clamp(2.25rem, 5vw, 4rem) 0 clamp(2.5rem, 6vw, 5rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -46%;
  width: 58vw;
  height: 58vw;
  background: radial-gradient(circle at 32% 32%, rgba(182, 129, 63, 0.30), rgba(182, 129, 63, 0) 62%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 clamp(1rem, 3vw, 1.75rem);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--copper-soft);
}

.page-faq .faq-crumb a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 171, 109, 0.42);
}

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

.page-faq .faq-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2.6rem, 9vw, 5.5rem);
  line-height: 0.98;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-faq .faq-lede {
  max-width: 44ch;
  margin: clamp(1.1rem, 2.5vw, 1.6rem) 0 0;
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  line-height: 1.9;
  color: rgba(239, 230, 214, 0.82);
}

.page-faq .faq-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.75rem;
  margin-top: clamp(1.5rem, 3vw, 2rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--faq-line-ink);
}

.page-faq .faq-hero-meta span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: rgba(239, 230, 214, 0.66);
}

.page-faq .faq-hero-meta b {
  color: var(--copper-soft);
  font-weight: 600;
  margin-right: 0.5rem;
}

.page-faq .faq-hero-figure {
  margin: 0;
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border: 1px solid rgba(217, 171, 109, 0.34);
  border-radius: var(--radius);
  filter: saturate(0.85) contrast(1.06);
}

.page-faq .faq-hero-figure figcaption {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: rgba(239, 230, 214, 0.58);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding-top: clamp(2.25rem, 5vw, 4rem);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
}

.page-faq .faq-index {
  border-top: 2px solid var(--ink);
  padding-top: 1rem;
}

.page-faq .faq-index-title {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
}

.page-faq .faq-index-list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.62rem 0.2rem;
  border-bottom: 1px solid var(--rule-soft);
  color: var(--text);
  font-size: 0.94rem;
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.page-faq .faq-index-list a:hover {
  color: var(--crimson);
  padding-left: 0.45rem;
}

.page-faq .faq-index-list span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--copper);
}

.page-faq .faq-index-note {
  margin: 0;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--copper);
  background: var(--paper-2);
  font-size: 0.84rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-group {
  scroll-margin-top: 6rem;
  margin-bottom: clamp(2rem, 4.5vw, 3.25rem);
}

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

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--faq-line);
  margin-bottom: 0.25rem;
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--copper);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 700;
  color: var(--ink);
}

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

.page-faq .faq-item summary {
  position: relative;
  display: block;
  list-style: none;
  cursor: pointer;
  padding: 1.05rem 2.4rem 1.05rem 0;
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.7vw, 1.12rem);
  line-height: 1.65;
  color: var(--ink);
  transition: color 0.2s ease;
}

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

.page-faq .faq-item summary::after {
  content: "";
  position: absolute;
  right: 0.55rem;
  top: 50%;
  width: 0.5rem;
  height: 0.5rem;
  border-right: 1.5px solid var(--copper);
  border-bottom: 1.5px solid var(--copper);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.25s ease;
}

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

.page-faq .faq-item[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

.page-faq .faq-item summary:hover {
  color: var(--crimson);
}

.page-faq .faq-item-body {
  padding: 0 2rem 1.35rem 0.05rem;
}

.page-faq .faq-item-body p {
  max-width: 60ch;
  margin: 0 0 0.75rem;
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--muted);
}

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

/* ---------- 四步路径 ---------- */
.page-faq .faq-route {
  background: var(--ink);
  color: var(--sand);
}

.page-faq .faq-route-head {
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-route-head .eyebrow {
  color: var(--copper-soft);
}

.page-faq .faq-route-head .section-title {
  color: var(--paper);
  margin-top: 0.5rem;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
}

.page-faq .faq-step-num {
  display: block;
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: var(--copper-soft);
}

.page-faq .faq-step-title {
  margin: 0 0 0.55rem;
  font-family: var(--font-serif);
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-step-text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: rgba(239, 230, 214, 0.72);
}

/* ---------- 联系 ---------- */
.page-faq .faq-reach {
  background: var(--sand);
}

.page-faq .faq-reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: start;
}

.page-faq .faq-reach-text {
  max-width: 52ch;
  margin: 0.9rem 0 1.5rem;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-ledger {
  margin-bottom: 1.6rem;
}

.page-faq .faq-ledger .ledger-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-ledger .ledger-key {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-ledger .ledger-val {
  font-size: 0.94rem;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-ledger .ledger-num {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--crimson);
}

.page-faq .faq-reach-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-faq .faq-reach-figure {
  margin: 0;
}

.page-faq .faq-reach-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(27, 42, 35, 0.16);
}

.page-faq .faq-reach-figure figcaption {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero-figure img {
    aspect-ratio: 7 / 9;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem 0;
  }

  .page-faq .faq-step {
    padding: 0 1.5rem;
    border-left: 1px solid var(--faq-line-ink);
  }

  .page-faq .faq-step:nth-child(odd) {
    padding-left: 0;
    border-left: 0;
  }

  .page-faq .faq-reach-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    align-items: center;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 232px) minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6rem;
    align-self: start;
  }

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

  .page-faq .faq-step {
    border-left: 1px solid var(--faq-line-ink);
  }

  .page-faq .faq-step:nth-child(odd) {
    padding-left: 1.5rem;
    border-left: 1px solid var(--faq-line-ink);
  }

  .page-faq .faq-step:first-child {
    padding-left: 0;
    border-left: 0;
  }
}