.page-faq {
  --faq-rail: 268px;
  --faq-line: var(--c-line-strong);
  --faq-gap: 30px;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  margin-bottom: 22px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-bottom: 38px;
  padding: 28px 18px 26px;
  border: 2px solid var(--c-lime);
  background: var(--grad-band);
  box-shadow: var(--shadow-hard-lg);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(to right, var(--c-line) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(to bottom, var(--c-line) 0 1px, transparent 1px 48px);
  opacity: 0.45;
  pointer-events: none;
}

.page-faq .faq-hero__top {
  position: relative;
  padding-right: 0;
}

.page-faq .faq-hero__eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 8vw, 56px);
  line-height: 1.02;
  letter-spacing: 0.02em;
  color: var(--c-paper);
}

.page-faq .faq-hero__side {
  display: none;
}

.page-faq .faq-hero__lead {
  position: relative;
  margin: 18px 0 0;
  max-width: 38ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-silver);
}

.page-faq .faq-hero__stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 2px solid var(--c-line-strong);
  list-style: none;
}

.page-faq .faq-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-stat__num {
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--c-lime);
  font-variant-numeric: tabular-nums;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

/* ---------- 左侧分组目录 ---------- */
.page-faq .faq-aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-aside__caption {
  margin: 0;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--c-lime-dim);
  color: var(--c-lime);
}

.page-faq .faq-toc {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 2px solid var(--faq-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-toc li + li {
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-silver);
  text-decoration: none;
  transition: color var(--dur), background-color var(--dur);
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  color: var(--c-lime);
  background: var(--c-panel-2);
}

.page-faq .faq-toc__no {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-silver-dim);
  transition: color var(--dur);
}

.page-faq .faq-toc a:hover .faq-toc__no,
.page-faq .faq-toc a:focus-visible .faq-toc__no {
  color: var(--c-orange);
}

.page-faq .faq-aside__fig {
  margin: 0;
  border: 2px solid var(--faq-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-aside__fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: grayscale(0.35) contrast(1.05);
}

.page-faq .faq-aside__cap {
  display: block;
  margin: 0;
  padding: 10px 12px;
  border-top: 1px solid var(--c-line);
  font-size: 11px;
  line-height: 1.6;
  color: var(--c-silver-dim);
}

.page-faq .faq-aside__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-silver-dim);
}

.page-faq .faq-aside__hint a {
  color: var(--c-silver);
  text-decoration: none;
  border-bottom: 1px solid var(--c-lime-dim);
}

.page-faq .faq-aside__hint a:hover,
.page-faq .faq-aside__hint a:focus-visible {
  color: var(--c-lime);
}

/* ---------- 分组 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 92px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 46px;
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  display: block;
  height: 10px;
  margin: 0 0 34px;
  background: var(--grad-band);
  border-top: 2px solid var(--faq-line);
  border-bottom: 2px solid var(--faq-line);
}

.page-faq .group-head {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  margin-bottom: 20px;
}

.page-faq .group-head__no {
  grid-column: 1;
  grid-row: 1;
  margin: 0;
  font-family: var(--font-num);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--c-lime);
  font-variant-numeric: tabular-nums;
}

.page-faq .group-head__title {
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 5vw, 28px);
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--c-paper);
}

.page-faq .group-head__title::after {
  content: "";
  display: block;
  width: 56px;
  height: 2px;
  margin-top: 9px;
  background: var(--c-lime-dim);
}

.page-faq .group-head__desc {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-silver);
}

/* ---------- 口径摘要条 ---------- */
.page-faq .meter {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 1px;
  background: var(--faq-line);
  border: 2px solid var(--faq-line);
}

.page-faq .meter li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 12px 13px;
  background: var(--c-mid);
}

.page-faq .meter__val {
  font-family: var(--font-num);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: var(--c-lime);
  font-variant-numeric: tabular-nums;
}

.page-faq .meter__key {
  font-size: 11px;
  line-height: 1.5;
  color: var(--c-silver-dim);
}

/* ---------- 问答 ---------- */
.page-faq .qa {
  display: grid;
  gap: 12px;
}

.page-faq .q {
  border: 2px solid var(--faq-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
  transition: border-color var(--dur), box-shadow var(--dur);
}

.page-faq .q:hover {
  box-shadow: var(--shadow-hard-lg);
}

.page-faq .q[open] {
  border-color: var(--c-lime-dim);
}

.page-faq .q__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 15px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-paper);
  transition: color var(--dur);
}

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

.page-faq .q__q::marker {
  content: "";
}

.page-faq .q__q:hover,
.page-faq .q__q:focus-visible {
  color: var(--c-lime);
}

.page-faq .q__mark {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  display: grid;
  place-items: center;
  border: 2px solid var(--c-lime);
  font-family: var(--font-num);
  font-size: 13px;
  line-height: 1;
  color: var(--c-lime);
  transition: transform var(--dur), border-color var(--dur), color var(--dur);
}

.page-faq .q__mark::before {
  content: "+";
  display: block;
  line-height: 1;
}

.page-faq .q[open] .q__mark {
  transform: rotate(45deg);
  border-color: var(--c-orange);
  color: var(--c-orange);
}

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

.page-faq .q__body {
  padding: 0 15px 18px 47px;
  max-width: 62ch;
}

.page-faq .q__lead {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--c-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-paper);
}

.page-faq .q__note {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-silver);
}

.page-faq .q__note a {
  color: var(--c-lime);
  text-decoration: none;
  border-bottom: 1px solid var(--c-lime-dim);
}

.page-faq .q__note a:hover,
.page-faq .q__note a:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

/* ---------- 内联刻度尺 ---------- */
.page-faq .scale {
  margin: 0 0 22px;
  padding: 16px 14px 12px;
  border: 2px solid var(--faq-line);
  background: var(--c-panel-2);
  box-shadow: var(--shadow-hard);
}

.page-faq .scale__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .scale__bar {
  fill: var(--c-lime-dim);
}

.page-faq .scale__bar--lime {
  fill: var(--c-lime);
}

.page-faq .scale__axis {
  stroke: var(--c-silver-dim);
  stroke-width: 2;
}

.page-faq .scale__ticks {
  stroke: var(--c-silver-dim);
  stroke-width: 8;
  stroke-dasharray: 1 49;
}

.page-faq .scale__label {
  fill: var(--c-silver);
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-faq .scale__cap {
  margin: 10px 0 0;
  font-size: 11px;
  line-height: 1.6;
  color: var(--c-silver-dim);
}

/* ---------- 分组配图 ---------- */
.page-faq .group-fig {
  margin: 0 0 22px;
  border: 2px solid var(--faq-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
}

.page-faq .group-fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}

.page-faq .group-fig__cap {
  display: block;
  margin: 0;
  padding: 10px 12px;
  border-top: 1px solid var(--c-line);
  font-size: 11px;
  line-height: 1.6;
  color: var(--c-silver-dim);
}

/* ---------- 收束区 ---------- */
.page-faq .faq-coda {
  margin-top: 50px;
  padding: 26px 20px;
  border: 2px solid var(--c-lime);
  background: var(--grad-band);
  box-shadow: var(--shadow-hard-lg);
}

.page-faq .faq-coda__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 4.5vw, 26px);
  letter-spacing: 0.02em;
  color: var(--c-paper);
}

.page-faq .faq-coda__lead {
  margin: 0;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-silver);
}

.page-faq .faq-coda__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 34px 28px 30px;
  }

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

  .page-faq .q__q {
    padding: 16px 18px;
    font-size: 16px;
  }

  .page-faq .q__body {
    padding: 0 18px 20px 50px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__top {
    padding-right: 36px;
  }

  .page-faq .faq-hero__side {
    display: block;
    position: absolute;
    top: 34px;
    right: 0;
    writing-mode: vertical-rl;
    letter-spacing: 0.34em;
    font-size: 11px;
    color: var(--c-silver-dim);
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 42px;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 86px;
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 56px;
  }
}

@media (min-width: 1240px) {
  .page-faq .q__body {
    padding-right: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .q__mark,
  .page-faq .q,
  .page-faq .faq-toc a {
    transition: none;
  }
}
<<<END>>>