.page-faq {
  --faq-side-w: 250px;
  --faq-rhythm: clamp(40px, 5vw, 72px);
  --faq-radius: var(--radius-md);
  background: var(--ink);
  color: var(--fog);
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-faq .data {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.page-faq .inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 245, 208, .35);
  transition: border-color .2s ease, color .2s ease;
}

.page-faq .inline-link:hover {
  color: var(--fog);
  border-color: var(--fog);
}

/* 面包屑 */
.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(16px, 3vw, 28px);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-faq .breadcrumb__item {
  color: var(--mist);
  text-decoration: none;
  transition: color .2s ease;
}

.page-faq .breadcrumb__item:hover {
  color: var(--cyan);
}

.page-faq .breadcrumb__item--current {
  color: var(--fog);
}

.page-faq .breadcrumb__sep {
  color: var(--line);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  margin-top: clamp(12px, 2vw, 22px);
  padding-block: clamp(26px, 5vw, 52px) clamp(24px, 4vw, 42px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(58% 78% at 84% 8%, rgba(43, 245, 208, .13), transparent 64%),
    radial-gradient(52% 72% at 6% 96%, rgba(139, 92, 246, .18), transparent 62%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: -38%;
  width: min(460px, 62vw);
  height: min(460px, 62vw);
  background: var(--grad-accent);
  opacity: .14;
  clip-path: polygon(0 0, 100% 100%, 0 100%);
  transform: rotate(10deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-left: clamp(14px, 2vw, 20px);
  border-left: 2px solid var(--cyan);
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  max-width: 18em;
  font-family: var(--font-display);
  font-size: clamp(32px, 5.4vw, 60px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* 热门问题芯片 */
.page-faq .faq-hot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hot a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  font-size: 13px;
  line-height: 1.3;
  color: var(--mist);
  text-decoration: none;
  background: rgba(16, 30, 60, .62);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: border-color .2s ease, color .2s ease, background .2s ease, transform .2s ease;
}

.page-faq .faq-hot a:hover,
.page-faq .faq-hot a:focus-visible {
  color: var(--fog);
  border-color: var(--cyan);
  background: rgba(43, 245, 208, .08);
  transform: translateY(-1px);
}

.page-faq .faq-hot__no {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: .04em;
}

/* 主体两栏 */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  padding-block: clamp(28px, 5vw, 56px) 0;
}

/* 侧栏索引 */
.page-faq .faq-side {
  min-width: 0;
}

.page-faq .faq-side__sticky {
  display: grid;
  gap: 14px;
}

.page-faq .faq-side .eyebrow {
  margin: 0;
}

.page-faq .faq-toc {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
}

.page-faq .toc-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--mist);
  text-decoration: none;
  border-left: 2px solid var(--line);
  background: rgba(11, 20, 40, .5);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-faq .toc-link:hover,
.page-faq .toc-link:focus-visible {
  color: var(--fog);
  border-left-color: var(--cyan);
  background: rgba(43, 245, 208, .07);
}

.page-faq .toc-link.is-active {
  color: var(--fog);
  border-left-color: var(--cyan);
  background: rgba(43, 245, 208, .1);
}

.page-faq .toc-idx {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-faq .faq-side__card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: linear-gradient(150deg, rgba(16, 30, 60, .9), rgba(11, 20, 40, .7));
  box-shadow: var(--shadow-panel);
}

.page-faq .faq-side__card-t {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--fog);
}

.page-faq .faq-side__card p {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-side__card .btn {
  width: 100%;
  justify-content: center;
}

/* 问答分组 */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: var(--faq-rhythm);
}

.page-faq .faq-group__head {
  display: grid;
  gap: 10px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__head .eyebrow {
  margin: 0;
}

.page-faq .section-title {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  font-family: var(--font-display);
  font-size: clamp(23px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-faq .faq-group__desc {
  margin: 0;
  max-width: 44em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-list {
  display: block;
}

/* 问答条目 */
.page-faq .qa {
  position: relative;
  padding-left: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  border-radius: 2px;
  background: var(--line);
  transition: background .25s ease, top .25s ease, bottom .25s ease;
}

.page-faq .qa:hover::before,
.page-faq .qa[open]::before {
  background: var(--cyan);
  top: 14px;
  bottom: 14px;
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 0 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(15.5px, 1.7vw, 18.5px);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--fog);
  transition: color .2s ease;
}

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

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

.page-faq .qa__q:hover {
  color: var(--cyan);
}

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

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  background: rgba(11, 20, 40, .8);
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  border-radius: 1px;
}

.page-faq .qa__mark::before {
  left: 4px;
  right: 4px;
  top: 8px;
  height: 1.5px;
}

.page-faq .qa__mark::after {
  top: 4px;
  bottom: 4px;
  left: 8px;
  width: 1.5px;
  transition: transform .25s ease, opacity .25s ease;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 0 22px 30px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  max-width: 40em;
}

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

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

.page-faq .qa__a .data {
  color: var(--fog);
  font-size: 13.5px;
}

/* 步骤列表 */
.page-faq .steps {
  counter-reset: faq-step;
  display: grid;
  gap: 9px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .steps li {
  position: relative;
  padding-left: 34px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .steps li::before {
  counter-increment: faq-step;
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  padding: 1px 5px;
  font-family: var(--font-data);
  font-size: 10.5px;
  line-height: 1.5;
  color: var(--cyan);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  background: rgba(11, 20, 40, .8);
}

/* 配图 */
.page-faq .faq-figure {
  margin: 26px 0 0;
  max-width: 640px;
}

.page-faq .faq-figure__frame {
  aspect-ratio: 10 / 7;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: linear-gradient(150deg, var(--ink-2), var(--ink-1));
}

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

.page-faq .faq-figure__cap {
  margin: 10px 0 0;
  font-family: var(--font-data);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--mist);
}

/* 支持卡片 */
.page-faq .support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .support-card {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: rgba(11, 20, 40, .72);
  transition: border-color .2s ease, transform .2s ease;
}

.page-faq .support-card:hover {
  border-color: rgba(43, 245, 208, .45);
  transform: translateY(-2px);
}

.page-faq .support-card__label {
  margin: 0 0 6px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-faq .support-card__value {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--fog);
  word-break: break-word;
}

.page-faq .support-card__value--sm {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .support-card__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

/* 尾部行动区 */
.page-faq .faq-cta {
  display: grid;
  gap: 20px;
  align-items: center;
  margin-top: var(--faq-rhythm);
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(70% 120% at 88% 0%, rgba(139, 92, 246, .22), transparent 66%),
    linear-gradient(135deg, rgba(43, 245, 208, .08), rgba(11, 20, 40, .9));
}

.page-faq .faq-cta__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.6vw, 28px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-faq .faq-cta__text p {
  margin: 0;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-cta__actions .btn {
  flex: 1 1 auto;
  justify-content: center;
  min-width: 150px;
}

/* 响应式：中等宽度 */
@media (min-width: 700px) {
  .page-faq .support-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hot a {
    padding: 10px 16px;
  }
}

/* 响应式：桌面双栏 */
@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-side-w) minmax(0, 1fr);
    gap: clamp(36px, 4.5vw, 72px);
    align-items: start;
  }

  .page-faq .faq-side__sticky {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-toc {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 28px;
  }

  .page-faq .faq-cta__actions {
    flex-wrap: nowrap;
  }

  .page-faq .faq-cta__actions .btn {
    flex: 0 0 auto;
  }

  .page-faq .faq-figure {
    margin-top: 30px;
  }
}
<<<END>>>