.page-faq {
  --faq-edge: rgba(110, 140, 168, 0.26);
  --faq-edge-lit: rgba(56, 242, 208, 0.55);
  --faq-surface: rgba(11, 35, 64, 0.68);
  --faq-surface-2: rgba(16, 46, 74, 0.82);
  padding-bottom: clamp(40px, 7vw, 84px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-cover {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 38px) 0 clamp(30px, 5vw, 56px);
  border-bottom: 1px solid var(--faq-edge);
  background:
    radial-gradient(110% 80% at 88% -12%, rgba(56, 242, 208, 0.18), transparent 58%),
    radial-gradient(80% 70% at 0% 6%, rgba(255, 107, 74, 0.13), transparent 62%),
    linear-gradient(158deg, var(--c-midnight) 0%, var(--c-deep) 74%);
}

.page-faq .faq-cover::after {
  content: "";
  position: absolute;
  right: -10%;
  top: 8%;
  width: 48%;
  height: 84%;
  background: linear-gradient(135deg, rgba(56, 242, 208, 0.12), transparent 72%);
  clip-path: polygon(30% 0, 100% 0, 70% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-cover__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-cover__lead h1 {
  margin: 10px 0 0;
  font-size: clamp(27px, 5.4vw, 46px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--c-ink);
}

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

.page-faq .faq-cover__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* 版本信息卡（纸叠展签） */
.page-faq .faq-spec {
  position: relative;
  align-self: start;
  padding: 18px 18px 14px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, var(--faq-surface-2), var(--faq-surface));
  box-shadow: var(--shadow-1);
}

.page-faq .faq-spec::before {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  top: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-cyan), transparent);
}

.page-faq .faq-spec__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-dim);
}

.page-faq .faq-spec__ver {
  margin: 4px 0 14px;
  font-size: clamp(30px, 7vw, 38px);
  line-height: 1;
  color: var(--c-cyan);
  letter-spacing: -0.01em;
}

.page-faq .faq-spec__list {
  margin: 0;
  border-top: 1px dashed var(--faq-edge);
}

.page-faq .faq-spec__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--faq-edge);
  font-size: 13px;
}

.page-faq .faq-spec__row dt {
  color: var(--c-dim);
}

.page-faq .faq-spec__row dd {
  margin: 0;
  color: var(--c-ink);
  font-size: 13px;
  text-align: right;
}

/* ---------- 索引带 ---------- */
.page-faq .faq-index {
  padding-top: clamp(26px, 4vw, 44px);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-dim);
  font-weight: 600;
}

.page-faq .faq-chips {
  display: flex;
  gap: 10px;
  padding: 2px 2px 12px;
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-chip {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--faq-edge);
  border-radius: 999px;
  background: var(--faq-surface);
  color: var(--c-ink);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-chip .mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--faq-edge-lit);
  background: rgba(56, 242, 208, 0.1);
  color: var(--c-cyan-soft);
}

.page-faq .faq-hot {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 10px;
}

.page-faq .faq-hot__card {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--faq-edge);
  border-left: 3px solid var(--c-coral);
  border-radius: var(--radius-s);
  background: var(--faq-surface);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-hot__card:hover,
.page-faq .faq-hot__card:focus-visible {
  border-color: var(--faq-edge-lit);
  background: rgba(16, 46, 74, 0.92);
}

.page-faq .faq-hot__tag {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-coral);
}

.page-faq .faq-hot__q {
  font-size: 15px;
  line-height: 1.55;
  color: var(--c-ink);
}

.page-faq .faq-hot__more {
  font-size: 13px;
  color: var(--c-cyan);
}

/* ---------- 双栏主体 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 42px);
  padding-top: clamp(30px, 5vw, 54px);
}

.page-faq .faq-aside {
  padding: 16px 16px 18px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-m);
  background: var(--faq-surface);
}

.page-faq .faq-aside__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--c-dim);
}

.page-faq .faq-aside__title + .faq-toc {
  margin-bottom: 20px;
}

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

.page-faq .faq-toc a,
.page-faq .faq-shortcuts a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 8px;
  border-radius: var(--radius-s);
  color: var(--c-ink);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-toc a .mono {
  font-size: 11px;
  color: var(--c-cyan);
  letter-spacing: 0.08em;
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible,
.page-faq .faq-shortcuts a:hover,
.page-faq .faq-shortcuts a:focus-visible {
  background: rgba(56, 242, 208, 0.1);
  color: var(--c-cyan-soft);
}

.page-faq .faq-shortcuts a {
  font-size: 13px;
  color: var(--c-dim);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(30px, 4.5vw, 48px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--faq-edge);
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 3.2vw, 27px);
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-faq .faq-group__lead {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-dim);
}

/* 图 */
.page-faq .faq-shot {
  margin: 0 0 20px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--faq-surface);
}

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

.page-faq .faq-shot figcaption {
  padding: 9px 14px;
  border-top: 1px solid var(--faq-edge);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-dim);
}

.page-faq .faq-shot--square {
  max-width: 440px;
}

/* 折叠问答 */
.page-faq .faq-item {
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, var(--faq-surface-2), var(--faq-surface));
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item[open] {
  border-color: var(--faq-edge-lit);
  box-shadow: 0 0 0 1px rgba(56, 242, 208, 0.14);
}

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

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

.page-faq .faq-item__num {
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}

.page-faq .faq-item__q {
  font-size: 15px;
  line-height: 1.6;
  font-weight: 600;
  color: var(--c-ink);
}

.page-faq .faq-item__sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  flex: 0 0 auto;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--c-cyan);
  border-radius: 2px;
  transition: transform 0.22s var(--ease);
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

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

.page-faq .faq-item__body {
  margin: 0 0 6px 16px;
  padding: 2px 16px 14px 12px;
  border-left: 2px solid transparent;
  transition: border-color 0.22s var(--ease);
}

.page-faq .faq-item[open] .faq-item__body {
  border-left-color: var(--c-cyan);
}

.page-faq .faq-item__body p {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-ink);
}

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

.page-faq .faq-steps {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 9px;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 32px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-ink);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  padding: 0 4px;
  border: 1px solid rgba(56, 242, 208, 0.35);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--c-cyan);
}

/* 联系卡 */
.page-faq .faq-contact-card {
  position: relative;
  margin: 0 0 18px;
  padding: 16px 18px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-m);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(255, 107, 74, 0.16), transparent 62%),
    var(--faq-surface-2);
}

.page-faq .faq-contact-card__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-dim);
}

.page-faq .faq-contact-card__value {
  margin: 2px 0 12px;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--c-cyan-soft);
  word-break: break-all;
}

.page-faq .faq-contact-card__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-dim);
}

/* 收尾 */
.page-faq .faq-tail {
  margin-top: clamp(34px, 5vw, 52px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--faq-edge);
  border-radius: var(--radius-l);
  background:
    linear-gradient(135deg, rgba(56, 242, 208, 0.1), transparent 58%),
    var(--faq-surface);
}

.page-faq .faq-tail__title {
  margin: 0;
  font-size: clamp(19px, 3vw, 24px);
  color: var(--c-ink);
  letter-spacing: -0.01em;
}

.page-faq .faq-tail__text {
  margin: 10px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-dim);
}

.page-faq .faq-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hot {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-cover__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.68fr);
    align-items: start;
  }

  .page-faq .faq-body {
    grid-template-columns: 262px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 96px;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-cover__intro {
    font-size: 15px;
  }

  .page-faq .faq-item summary {
    padding: 14px 14px;
    gap: 10px;
  }

  .page-faq .faq-item__q {
    font-size: 14.5px;
  }

  .page-faq .faq-item__body {
    margin-left: 12px;
    padding-right: 14px;
  }

  .page-faq .faq-shot--square {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-hot__card,
  .page-faq .faq-item,
  .page-faq .faq-item__body,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition: none;
  }
}
<<<END>>>