.page-faq {
  --faq-card: rgba(232, 228, 220, .045);
  --faq-card-hover: rgba(232, 228, 220, .085);
  --faq-open: rgba(184, 134, 59, .09);
  --faq-gap: clamp(24px, 4vw, 48px);
  background: var(--ink-800);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3vw, 30px) 0 clamp(36px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 84% 0%, rgba(46, 42, 74, .85) 0%, rgba(46, 42, 74, 0) 62%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(232, 228, 220, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(232, 228, 220, .055) 1px, transparent 1px);
  background-size: 80px 80px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), rgba(0, 0, 0, 0));
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), rgba(0, 0, 0, 0));
  pointer-events: none;
}

.page-faq .faq-crumbs {
  position: relative;
}

.page-faq .faq-hero-inner {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 36px);
}

.page-faq .faq-hero-copy h1 {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(27px, 4.6vw, 52px);
  line-height: 1.22;
  letter-spacing: -.015em;
  color: var(--warm);
}

.page-faq .faq-hero-copy .lede {
  max-width: 60ch;
  color: var(--text);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-900);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--text-dim);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding-top: clamp(30px, 5vw, 64px);
}

.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
}

/* 分类索引 */
.page-faq .faq-toc {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-faq .faq-toc-head {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: .7rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brass);
}

.page-faq .faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-toc-link {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border: 1px solid var(--line-soft);
  text-decoration: none;
  color: var(--text-dim);
  font-size: .86rem;
  transition: color var(--speed), border-color var(--speed), background var(--speed);
}

.page-faq .faq-toc-link .mono {
  font-size: .72rem;
  color: var(--brass);
  letter-spacing: .08em;
}

.page-faq .faq-toc-link:hover {
  color: var(--warm);
  border-color: var(--line);
  background: rgba(184, 134, 59, .07);
}

/* 问答流 */
.page-faq .faq-stream {
  display: grid;
  gap: clamp(34px, 5vw, 68px);
  min-width: 0;
}

.page-faq .faq-block {
  scroll-margin-top: calc(var(--header-h) + 28px);
  min-width: 0;
}

.page-faq .faq-block-head {
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  margin-bottom: 18px;
}

.page-faq .faq-block-num {
  display: inline-block;
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--brass);
}

.page-faq .faq-block-title {
  margin: 8px 0 8px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(20px, 2.7vw, 29px);
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--warm);
}

.page-faq .faq-block-desc {
  margin: 0;
  max-width: 68ch;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--line-soft);
  background: var(--faq-card);
  transition: background var(--speed), border-color var(--speed);
}

.page-faq .faq-item:hover {
  background: var(--faq-card-hover);
  border-color: var(--line);
}

.page-faq .faq-item[open] {
  background: var(--faq-open);
  border-color: var(--line);
  box-shadow: inset 3px 0 0 0 var(--brass);
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 15px 16px;
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--brass-2);
  outline-offset: -2px;
}

.page-faq .faq-q {
  padding-top: 4px;
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--brass);
}

.page-faq .faq-q-text {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.55;
  color: var(--warm);
  transition: color var(--speed);
}

.page-faq .faq-item[open] .faq-q-text {
  color: var(--brass-2);
}

.page-faq .faq-mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--brass);
  transition: transform var(--speed) ease, opacity var(--speed);
}

.page-faq .faq-mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1px;
}

.page-faq .faq-mark::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: scaleY(0);
}

.page-faq .faq-a {
  padding: 0 16px 18px;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .faq-a-inner {
  border-left: 1px solid var(--line);
  padding-left: 14px;
}

.page-faq .faq-a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-a a {
  color: var(--brass-2);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-faq .faq-figure--cert {
  margin-top: 20px;
}

/* ---------- 结尾引导 ---------- */
.page-faq .faq-cta-wrap {
  border: 1px solid var(--line);
  background: linear-gradient(135deg, var(--teal) 0%, var(--indigo) 100%);
  padding: clamp(24px, 4vw, 46px);
}

.page-faq .faq-cta-grid {
  display: grid;
  gap: clamp(20px, 3vw, 38px);
}

.page-faq .faq-cta-title {
  margin: 8px 0 12px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 31px);
  line-height: 1.32;
  color: var(--warm);
}

.page-faq .faq-cta-text {
  margin: 0;
  max-width: 56ch;
  color: var(--text);
}

.page-faq .faq-cta-links {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-cta-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 2px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--warm);
  text-decoration: none;
  transition: color var(--speed), padding-left var(--speed);
}

.page-faq .faq-cta-link .mono {
  color: var(--brass);
  font-size: .86rem;
}

.page-faq .faq-cta-link:hover {
  color: var(--brass-2);
  padding-left: 8px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-a {
    padding-left: 56px;
  }

  .page-faq .faq-a-inner {
    padding-left: 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
    align-items: start;
  }

  .page-faq .faq-toc {
    border-top: 0;
    border-right: 1px solid var(--line-soft);
    padding: 4px 24px 0 0;
  }

  .page-faq .faq-toc-inner {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-faq .faq-toc-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc-list li + li {
    margin-top: 2px;
  }

  .page-faq .faq-toc-link {
    padding: 9px 0 9px 13px;
    border: 0;
    border-left: 1px solid var(--line-soft);
  }

  .page-faq .faq-toc-link:hover {
    background: rgba(184, 134, 59, .07);
    border-left-color: var(--brass);
  }

  .page-faq .faq-cta-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-q-text,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after,
  .page-faq .faq-toc-link,
  .page-faq .faq-cta-link {
    transition: none;
  }
}