.page-faq {
  --faq-gap: clamp(20px, 3vw, 36px);
  --faq-toc-w: 216px;
  --faq-pad-x: clamp(14px, 2.4vw, 22px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .breadcrumb {
  margin-top: clamp(16px, 3vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 2px solid var(--line);
  background:
    radial-gradient(120% 110% at 88% 0%, rgba(0, 245, 196, .12), transparent 58%),
    radial-gradient(90% 90% at 4% 100%, rgba(255, 75, 43, .10), transparent 55%),
    linear-gradient(180deg, #0A1F18 0%, #04120E 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(234, 251, 244, .04) 0 1px, transparent 1px 4px);
  opacity: .7;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--faq-gap);
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(32px, 5vw, 56px);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: center;
  }
}

.page-faq .faq-hero h1 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero__media {
  margin: 0;
  aspect-ratio: 12 / 7;
  overflow: hidden;
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
}

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

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: var(--faq-gap);
  padding-top: clamp(24px, 4vw, 48px);
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-toc-w) minmax(0, 1fr);
    align-items: start;
  }
}

.page-faq .faq-toc {
  position: sticky;
  top: 68px;
  z-index: 4;
  padding: 10px;
  border: 2px solid var(--line);
  background: rgba(4, 18, 14, .95);
  backdrop-filter: blur(8px);
}

.page-faq .faq-toc__title {
  display: none;
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  text-transform: uppercase;
}

@media (min-width: 1000px) {
  .page-faq .faq-toc__title {
    display: block;
  }
}

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

@media (min-width: 1000px) {
  .page-faq .faq-toc ol {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }
}

.page-faq .faq-toc a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-left: 3px solid var(--line);
  color: var(--text);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: background .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-toc a .mono {
  font-size: 11px;
  color: var(--muted);
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  background: var(--rise);
  border-left-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-toc a:hover .mono,
.page-faq .faq-toc a:focus-visible .mono {
  color: var(--cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(22px, 3.4vw, 42px);
  min-width: 0;
}

.page-faq .faq-group {
  --grp: var(--cyan);
  border: 2px solid var(--line);
  border-left-width: 6px;
  border-left-color: var(--grp);
  background: var(--surface);
  box-shadow: var(--shadow-hard);
  scroll-margin-top: 96px;
}

.page-faq .faq-group--cyan { --grp: var(--cyan); }
.page-faq .faq-group--hot { --grp: var(--orange); }
.page-faq .faq-group--warn { --grp: var(--yellow); }
.page-faq .faq-group--soft { --grp: var(--muted); }
.page-faq .faq-group--terms { --grp: var(--cyan-dim); }

.page-faq .faq-group__head {
  display: grid;
  gap: 16px;
  padding: clamp(18px, 3vw, 26px) var(--faq-pad-x);
  border-bottom: 2px solid var(--line);
  background: linear-gradient(115deg, rgba(234, 251, 244, .04), transparent 62%);
}

@media (min-width: 760px) {
  .page-faq .faq-group__head {
    grid-template-columns: minmax(0, 1fr) 240px;
    align-items: center;
  }
}

.page-faq .faq-group__head--plain {
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-group__num {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--grp);
}

.page-faq .faq-group__head h2 {
  margin: 6px 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-group__note {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.page-faq .faq-group__media {
  margin: 0;
  aspect-ratio: 5 / 3;
  overflow: hidden;
  border: 2px solid var(--line-strong);
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-top: 2px solid var(--line);
}

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

.page-faq .faq-item__head {
  margin: 0;
  font: inherit;
}

.page-faq .faq-item__toggle {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  width: 100%;
  padding: 16px var(--faq-pad-x);
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: background .18s var(--ease);
}

.page-faq .faq-item__toggle:hover {
  background: var(--rise);
}

.page-faq .faq-item__toggle:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .faq-item__idx {
  padding-top: 5px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--grp);
}

.page-faq .faq-item__q {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(15px, 2.2vw, 18px);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-mark {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 2px solid var(--grp);
  color: var(--grp);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
}

.page-faq .faq-mark::before {
  content: "+";
}

.page-faq .faq-item__toggle[aria-expanded="true"] .faq-mark::before {
  content: "–";
}

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

.page-faq .disclosure[data-open] > .disclosure__panel {
  display: block;
}

.page-faq .faq-item__a {
  padding: 0 var(--faq-pad-x) 18px;
}

@media (min-width: 560px) {
  .page-faq .faq-item__a {
    padding-left: calc(var(--faq-pad-x) + 34px);
  }
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
  opacity: .9;
}

.page-faq .faq-item__a p + p {
  margin-top: 8px;
}

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

/* ---------- 术语速查 ---------- */
.page-faq .faq-terms__lead {
  margin: clamp(16px, 2.4vw, 22px) var(--faq-pad-x) 14px;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-terms {
  display: grid;
  gap: 2px;
  margin: 0 var(--faq-pad-x) clamp(18px, 3vw, 26px);
  background: var(--line);
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 640px) {
  .page-faq .faq-terms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-terms {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-term {
  padding: 15px 16px;
  background: var(--surface);
}

.page-faq .faq-term h3 {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-faq .faq-term p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 后续路径 ---------- */
.page-faq .faq-next {
  padding-top: clamp(34px, 5vw, 64px);
}

.page-faq .faq-next h2 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3vw, 27px);
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-next > p {
  margin: 0 0 18px;
  font-size: 14px;
  color: var(--muted);
}

.page-faq .faq-next__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 640px) {
  .page-faq .faq-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-faq .faq-next__card {
  display: block;
  padding: 16px 18px;
  border: 2px solid var(--line);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  transition: border-color .18s var(--ease), transform .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-next__card:hover,
.page-faq .faq-next__card:focus-visible {
  border-color: var(--cyan);
  background: var(--rise);
  transform: translate(-2px, -2px);
}

.page-faq .faq-next__idx {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-faq .faq-next__card strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.4;
}

.page-faq .faq-next__card span:last-child {
  display: block;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}
<<<END>>>