.page-faq {
  --faq-lead: clamp(1rem, 1.6vw, 1.15rem);
  --faq-body: clamp(0.94rem, 1.4vw, 1rem);
}

/* ---------- 首屏 ---------- */
.page-faq .kb-hero {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.75rem) 0 clamp(2rem, 5vw, 3.25rem);
  border-bottom: var(--line);
  background:
    radial-gradient(circle at 84% 6%, rgba(61, 242, 200, 0.12), transparent 52%),
    radial-gradient(circle at 6% 96%, rgba(31, 90, 67, 0.55), transparent 46%),
    linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 100%);
  overflow: hidden;
}

.page-faq .kb-hero::after {
  content: "";
  position: absolute;
  inset-inline-end: -12%;
  inset-block-start: 12%;
  width: min(52vw, 460px);
  height: min(52vw, 460px);
  border: 2px solid rgba(61, 242, 200, 0.16);
  transform: rotate(14deg);
  pointer-events: none;
}

.page-faq .kb-hero .eyebrow {
  margin-top: clamp(1.1rem, 3vw, 1.8rem);
}

.page-faq .kb-hero h1 {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--paper);
  margin: 0.55rem 0 1rem;
  max-width: 22ch;
}

.page-faq .kb-hero__lede {
  position: relative;
  z-index: 1;
  font-size: var(--faq-lead);
  line-height: 1.78;
  color: var(--slate);
  max-width: 66ch;
  margin: 0;
}

.page-faq .kb-hero__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.9rem;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: clamp(1rem, 2.5vw, 1.4rem) 0 0;
  border-top: var(--line);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-faq .kb-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
}

.page-faq .kb-hero__fact-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--glow);
  font-variant-numeric: tabular-nums;
}

/* ---------- 双栏骨架 ---------- */
.page-faq .kb-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(1.75rem, 5vw, 3.25rem);
}

.page-faq .kb-body {
  min-width: 0;
}

/* ---------- 侧栏目录（移动端：横向滑动条） ---------- */
.page-faq .kb-toc {
  font-family: var(--font-mono);
  border-bottom: var(--line);
  padding-bottom: 0.85rem;
}

.page-faq .kb-toc__title {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--glow);
  margin: 0 0 0.7rem;
}

.page-faq .kb-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0.35rem;
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .kb-toc__item {
  flex: 0 0 auto;
}

.page-faq .kb-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.5rem 0.75rem;
  white-space: nowrap;
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: var(--slate);
  text-decoration: none;
  border: var(--line);
  border-left: 3px solid var(--slate);
  background: var(--ink-2);
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-faq .kb-toc__link:hover,
.page-faq .kb-toc__link:focus-visible {
  color: var(--paper);
  border-left-color: var(--glow);
  background: var(--ink-3);
}

.page-faq .kb-toc__num {
  color: var(--signal);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

/* ---------- 分区 ---------- */
.page-faq .kb-section {
  padding-block: clamp(1.75rem, 4.5vw, 2.9rem);
  border-top: var(--line);
  scroll-margin-top: 4.5rem;
}

.page-faq .kb-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .kb-section:target .kb-section__index {
  color: var(--glow);
}

.page-faq .kb-section__head {
  display: flex;
  align-items: baseline;
  gap: clamp(0.7rem, 2vw, 1.1rem);
  margin-bottom: 1rem;
}

.page-faq .kb-section__index {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.5vw, 2.4rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--signal);
  flex: 0 0 auto;
  transition: color 0.25s var(--ease);
}

.page-faq .kb-section h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.6vw, 2.1rem);
  line-height: 1.15;
  letter-spacing: -0.012em;
  color: var(--paper);
  margin: 0;
}

.page-faq .kb-section__note {
  font-size: var(--faq-body);
  line-height: 1.75;
  color: var(--slate);
  max-width: 68ch;
  margin: 0 0 clamp(1.2rem, 3vw, 1.7rem);
}

/* ---------- 图片 ---------- */
.page-faq .kb-figure {
  margin: 0 0 clamp(1.3rem, 3vw, 1.9rem);
  border: var(--line);
  background: var(--ink-2);
}

.page-faq .kb-figure .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.08) brightness(0.95);
}

.page-faq .kb-figure .media__caption {
  border-top: var(--line);
  padding: 0.65rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--slate);
}

/* ---------- 手风琴 ---------- */
.page-faq .kb-list {
  display: grid;
  gap: 0.55rem;
}

.page-faq .kb-item {
  border: var(--line);
  border-left: 3px solid var(--slate);
  background: var(--ink-2);
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease), background 0.22s var(--ease);
}

.page-faq .kb-item:hover {
  border-left-color: var(--glow);
}

.page-faq .kb-item[open] {
  border-left-color: var(--glow);
  background: var(--ink-3);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .kb-item__q {
  display: flex;
  align-items: flex-start;
  gap: clamp(0.6rem, 2vw, 0.95rem);
  padding: clamp(0.85rem, 2.2vw, 1.05rem) clamp(0.85rem, 2.4vw, 1.15rem);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(0.95rem, 1.6vw, 1.06rem);
  line-height: 1.55;
  color: var(--paper);
}

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

.page-faq .kb-item__q:focus-visible {
  outline: 2px solid var(--glow);
  outline-offset: -2px;
}

.page-faq .kb-item__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  color: var(--signal);
  padding-top: 0.28em;
}

.page-faq .kb-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .kb-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 0.38em;
  border: 2px solid var(--slate);
  transition: border-color 0.22s var(--ease);
}

.page-faq .kb-item__mark::before,
.page-faq .kb-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--glow);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}

.page-faq .kb-item__mark::before {
  width: 7px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .kb-item__mark::after {
  width: 2px;
  height: 7px;
  transform: translate(-50%, -50%);
}

.page-faq .kb-item[open] .kb-item__mark {
  border-color: var(--glow);
}

.page-faq .kb-item[open] .kb-item__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .kb-item__a {
  padding: 0 clamp(0.85rem, 2.4vw, 1.15rem) clamp(0.95rem, 2.4vw, 1.15rem);
  font-size: var(--faq-body);
  line-height: 1.8;
  color: var(--slate);
  max-width: 74ch;
}

.page-faq .kb-item__a p {
  margin: 0 0 0.7rem;
}

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

/* ---------- 下一步 ---------- */
.page-faq .kb-next {
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
  padding: clamp(1.1rem, 3vw, 1.6rem);
  border: var(--line-bold);
  background: linear-gradient(135deg, rgba(61, 242, 200, 0.07), rgba(240, 180, 41, 0.05));
}

.page-faq .kb-next__text {
  margin: 0 0 1rem;
  font-size: var(--faq-body);
  line-height: 1.75;
  color: var(--paper);
  max-width: 62ch;
}

.page-faq .kb-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* ---------- 宽屏：目录固定成左侧栏 ---------- */
@media (min-width: 960px) {
  .page-faq .kb-layout {
    grid-template-columns: minmax(198px, 236px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .kb-toc {
    position: sticky;
    top: clamp(1rem, 3vw, 2rem);
    border-bottom: 0;
    padding-bottom: 0;
    border-left: 2px solid var(--reflex);
    padding-left: 1rem;
  }

  .page-faq .kb-toc__list {
    display: grid;
    gap: 0.1rem;
    overflow-x: visible;
    padding-bottom: 0;
  }

  .page-faq .kb-toc__item {
    flex: 0 1 auto;
  }

  .page-faq .kb-toc__link {
    display: flex;
    align-items: baseline;
    width: 100%;
    padding: 0.55rem 0.6rem;
    white-space: normal;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
  }

  .page-faq .kb-toc__link:hover,
  .page-faq .kb-toc__link:focus-visible {
    border-left-color: var(--glow);
    background: rgba(61, 242, 200, 0.06);
  }

  .page-faq .kb-item__q {
    padding-inline: 1.25rem;
  }

  .page-faq .kb-item__a {
    padding-inline: 1.25rem;
    padding-left: calc(1.25rem + 2.4rem);
  }
}

@media (min-width: 1200px) {
  .page-faq .kb-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 3.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .kb-toc__link,
  .page-faq .kb-item,
  .page-faq .kb-item__mark,
  .page-faq .kb-item__mark::before,
  .page-faq .kb-item__mark::after,
  .page-faq .kb-section__index {
    transition: none;
  }
}
<<<END>>>