.page-faq {
  --faq-gap: 48px;
  --faq-card-pad: 24px;
  background: var(--ink-900);
  color: var(--white);
}

.page-faq .page-faq__crumb {
  padding-top: 24px;
  padding-bottom: 8px;
}

/* ---------- 首屏：专题封面 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 32px 0 48px;
  background:
    radial-gradient(120% 90% at 84% 0%, rgba(16, 32, 58, 0.92), transparent 62%),
    linear-gradient(180deg, var(--ink-950), var(--ink-900));
  border-bottom: var(--hair);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(201, 210, 220, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(201, 210, 220, 0.045) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-serif);
  font-size: 39px;
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--white);
  max-width: 18ch;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 60ch;
  color: rgba(255, 255, 255, 0.78);
  font-size: 16px;
  line-height: 1.85;
}

/* 迷你目录 2×3 */

.page-faq .faq-toc {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--hair);
  border-left: var(--hair);
}

.page-faq .faq-toc__cell {
  position: relative;
  display: block;
  padding: 20px 20px 20px 22px;
  border-right: var(--hair);
  border-bottom: var(--hair);
  text-decoration: none;
  color: inherit;
  background: rgba(7, 13, 24, 0.42);
  transition: background 200ms var(--ease);
}

.page-faq .faq-toc__cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gold-500);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 160ms var(--ease);
}

.page-faq .faq-toc__cell:hover,
.page-faq .faq-toc__cell:focus-visible {
  background: rgba(16, 32, 58, 0.72);
}

.page-faq .faq-toc__cell:hover::before,
.page-faq .faq-toc__cell:focus-visible::before {
  transform: scaleY(1);
}

.page-faq .faq-toc__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-500);
}

.page-faq .faq-toc__name {
  display: block;
  margin-top: 8px;
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.35;
  color: var(--white);
}

.page-faq .faq-toc__note {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate-600);
}

/* ---------- 主布局 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding-top: 40px;
  padding-bottom: 72px;
}

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

/* ---------- 问答条目 ---------- */

.page-faq .faq-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding: 40px 0;
  border-top: var(--hair);
  scroll-margin-top: 24px;
}

.page-faq .faq-item:first-child {
  border-top: 0;
  padding-top: 8px;
}

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

.page-faq .faq-item__index {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-500);
}

.page-faq .faq-item__title {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 25px;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-faq .faq-item__meta {
  margin: 14px 0 0;
}

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

.page-faq .faq-answer {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
}

.page-faq .faq-answer--after {
  margin-top: 28px;
  padding-top: 20px;
  border-top: var(--hair-soft);
}

.page-faq .faq-tail {
  margin: 28px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--slate-600);
}

.page-faq .faq-tail a {
  color: var(--gold-250);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 206, 149, 0.35);
}

.page-faq .faq-tail a:hover,
.page-faq .faq-tail a:focus-visible {
  color: var(--gold-500);
  border-bottom-color: var(--gold-500);
}

/* ---------- 步骤列表 ---------- */

.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  margin-top: 28px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-steps--compact {
  margin-top: 28px;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0 16px 0;
  border-left: 1px solid rgba(217, 138, 43, 0.32);
  padding-left: 16px;
  margin-left: 4px;
}

.page-faq .faq-step__num {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold-500);
  line-height: 1.9;
}

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

.page-faq .faq-step__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--white);
  line-height: 1.6;
}

.page-faq .faq-step__text {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.72);
  max-width: 56ch;
}

/* ---------- 图片 ---------- */

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

.page-faq .faq-figure-wide {
  margin: 32px 0 0;
}

.page-faq .faq-figure img,
.page-faq .faq-figure-wide img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ---------- 提示块 ---------- */

.page-faq .faq-callout {
  margin-top: 32px;
  padding: 22px 24px;
  background: var(--navy-800);
  border: var(--hair);
  border-left: 2px solid var(--clay-500);
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-callout__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gold-250);
}

.page-faq .faq-callout__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.78);
  max-width: 62ch;
}

.page-faq .faq-callout__text strong {
  color: var(--white);
  font-weight: 600;
}

/* ---------- 参数键值（洽谈准备五项） ---------- */

.page-faq .faq-kv {
  margin: 28px 0 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-kv__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px dashed rgba(201, 210, 220, 0.14);
}

.page-faq .faq-kv__row:first-child {
  border-top: 1px dashed rgba(201, 210, 220, 0.14);
}

.page-faq .faq-kv__row dt {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--silver-300);
}

.page-faq .faq-kv__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.78);
}

/* ---------- 响应档位 ---------- */

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

.page-faq .faq-tier {
  padding: 20px 22px;
  background: var(--navy-800);
  border: var(--hair);
}

.page-faq .faq-tier__name {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--gold-500);
}

.page-faq .faq-tier__desc {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.76);
  max-width: 52ch;
}

/* ---------- 联系方式 ---------- */

.page-faq .faq-contact {
  margin-top: 28px;
  border-top: var(--hair);
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  gap: 6px 16px;
  padding: 18px 0;
  border-bottom: var(--hair);
}

.page-faq .faq-contact__key {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--silver-300);
}

.page-faq .faq-contact__value {
  font-size: 15px;
  line-height: 1.7;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-contact .copy-btn {
  justify-self: start;
}

/* ---------- 右侧锚点轨道 ---------- */

.page-faq .faq-anchor {
  min-width: 0;
  padding: 24px 20px;
  border: var(--hair);
  background: rgba(7, 13, 24, 0.5);
}

.page-faq .faq-anchor__title {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-500);
}

.page-faq .faq-anchor__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-anchor__list a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 10px 8px 10px 12px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.68);
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-faq .faq-anchor__list a .mono {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate-600);
}

.page-faq .faq-anchor__list a:hover,
.page-faq .faq-anchor__list a:focus-visible {
  color: var(--white);
  border-left-color: var(--gold-500);
  background: rgba(217, 138, 43, 0.06);
}

.page-faq .faq-anchor__list a:hover .mono,
.page-faq .faq-anchor__list a:focus-visible .mono {
  color: var(--gold-500);
}

.page-faq .faq-anchor__foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: var(--hair-soft);
  font-size: 12px;
  line-height: 1.75;
  color: var(--slate-600);
}

/* ---------- 术语区（浅色纸面） ---------- */

.page-faq .faq-terms {
  padding: 56px 0 64px;
  border-top: var(--hair);
}

.page-faq .faq-terms__head {
  max-width: 64ch;
}

.page-faq .faq-terms__index {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-500);
}

.page-faq .faq-terms__title {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-size: 25px;
  line-height: 1.24;
  letter-spacing: -0.015em;
  font-weight: 700;
  color: var(--ink-900);
}

.page-faq .faq-terms__lead {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--slate-600);
  max-width: 58ch;
}

.page-faq .faq-glossary {
  margin: 36px 0 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid rgba(10, 18, 32, 0.14);
}

.page-faq .faq-glossary__item {
  padding: 20px 0;
  border-bottom: 1px solid rgba(10, 18, 32, 0.14);
}

.page-faq .faq-glossary__item dt {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-900);
  letter-spacing: 0.01em;
}

.page-faq .faq-glossary__item dt .mono {
  display: inline-block;
  margin-right: 10px;
  padding: 2px 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--paper-050);
  background: var(--ink-900);
}

.page-faq .faq-glossary__item dd {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate-600);
  max-width: 60ch;
}

.page-faq .faq-terms__tail {
  margin: 28px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--slate-600);
}

.page-faq .faq-terms__tail a {
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 1px solid rgba(10, 18, 32, 0.28);
}

.page-faq .faq-terms__tail a:hover,
.page-faq .faq-terms__tail a:focus-visible {
  color: var(--gold-500);
  border-bottom-color: var(--gold-500);
}

/* ---------- 断点 ---------- */

@media (min-width: 560px) {
  .page-faq .faq-toc {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-kv__row {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 96px minmax(0, 1fr) auto;
  }

  .page-faq .faq-contact .copy-btn {
    justify-self: end;
  }

  .page-faq .faq-glossary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 64px 0 64px;
  }

  .page-faq .faq-hero__title {
    font-size: 49px;
  }

  .page-faq .faq-hero__lead {
    font-size: 17px;
  }

  .page-faq .faq-toc {
    margin-top: 48px;
  }

  .page-faq .faq-layout {
    padding-top: 56px;
    padding-bottom: 96px;
    gap: 56px;
  }

  .page-faq .faq-item {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 48px;
    padding: 56px 0;
  }

  .page-faq .faq-item:first-child {
    padding-top: 16px;
  }

  .page-faq .faq-item__title {
    font-size: 31px;
  }

  .page-faq .faq-tiers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-terms {
    padding: 72px 0 80px;
  }

  .page-faq .faq-terms__title {
    font-size: 31px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: 80px 0 72px;
  }

  .page-faq .faq-hero__title {
    font-size: 61px;
    max-width: 16ch;
  }

  .page-faq .faq-toc {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 248px;
    gap: 72px;
    align-items: start;
  }

  .page-faq .faq-anchor {
    position: sticky;
    top: 32px;
    align-self: start;
  }

  .page-faq .faq-item {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 64px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-hero__title {
    font-size: 76px;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 272px;
    gap: 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__cell,
  .page-faq .faq-toc__cell::before,
  .page-faq .faq-anchor__list a {
    transition: none;
  }
}
<<<END>>>