.page-faq {
  --faq-index-w: 244px;
  --faq-sticky: calc(var(--bar-h) + 32px);
  --faq-muted: #C3D0C8;
  background-color: var(--ink-900);
  color: var(--mist-100);
  padding-bottom: 72px;
  overflow-x: clip;
}

.page-faq .container {
  width: 100%;
  max-width: var(--frame);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  border-bottom: 1px solid var(--grid-600);
  background-image:
    linear-gradient(rgba(30, 59, 51, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 59, 51, 0.5) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 0 0;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(115% 88% at 82% 16%, rgba(53, 240, 168, 0.11), transparent 64%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
  padding-block: 26px 44px;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--rock-400);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin: 0 8px;
  color: var(--moss-500);
}

.page-faq .breadcrumb a {
  color: var(--rock-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--pulse-400);
  border-bottom-color: var(--pulse-400);
}

.page-faq .breadcrumb li[aria-current="page"] {
  color: var(--sand-200);
}

.page-faq .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--amber-400);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(34px, 8vw, 62px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: 0.01em;
  color: var(--mist-100);
  transform: skewX(-4deg);
  transform-origin: left bottom;
}

.page-faq .faq-hero__lede {
  max-width: 52ch;
  margin: 0 0 26px;
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--faq-muted);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 按钮（页面作用域内的最小保障） */
.page-faq .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-family: var(--font-body);
  font-size: var(--fs-15);
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid var(--grid-600);
  border-radius: 0;
  background: transparent;
  color: var(--mist-100);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .btn--primary {
  background: var(--pulse-400);
  border-color: var(--pulse-400);
  color: var(--ink-900);
  font-weight: 600;
}

.page-faq .btn--primary:hover,
.page-faq .btn--primary:focus-visible {
  background: var(--pulse-700);
  border-color: var(--pulse-700);
  color: var(--mist-100);
}

.page-faq .btn--ghost:hover,
.page-faq .btn--ghost:focus-visible {
  border-color: var(--pulse-400);
  color: var(--pulse-400);
}

.page-faq .btn--sm {
  min-height: 40px;
  padding: 0 14px;
  font-size: var(--fs-13);
}

.page-faq .btn:focus-visible {
  outline: 2px solid var(--pulse-400);
  outline-offset: 2px;
}

/* 首屏右侧面板 */
.page-faq .faq-hero__panel {
  position: relative;
  align-self: start;
  padding: 22px 20px;
  background: var(--ink-800);
  border: 1px solid var(--grid-600);
}

.page-faq .faq-hero__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 48px;
  height: 2px;
  background: var(--pulse-400);
}

.page-faq .faq-panel__cap {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--sand-200);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .faq-steps__n {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  border: 1px solid var(--grid-600);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--pulse-400);
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.7;
  color: var(--mist-100);
}

.page-faq .faq-panel__note {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--grid-600);
  font-size: var(--fs-13);
  line-height: 1.75;
  color: var(--rock-400);
}

/* ---------- 双栏主体 ---------- */
.page-faq .faq-body {
  padding-top: 40px;
}

.page-faq .faq-body__grid {
  display: grid;
  gap: 26px;
}

/* 分类索引 */
.page-faq .faq-index {
  padding: 18px 16px 16px;
  background: var(--ink-800);
  border: 1px solid var(--grid-600);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--sand-200);
}

.page-faq .faq-index__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index__list::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--grid-600);
}

.page-faq .faq-index__item {
  position: relative;
  padding-left: 20px;
}

.page-faq .faq-index__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -4.5px;
  border-radius: 50%;
  background: var(--ink-800);
  border: 1px solid var(--moss-500);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-index__item:hover::before,
.page-faq .faq-index__item:focus-within::before {
  background: var(--pulse-400);
  border-color: var(--pulse-400);
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  padding: 11px 0;
  text-decoration: none;
  color: var(--mist-100);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--rock-400);
}

.page-faq .faq-index__label {
  font-size: var(--fs-15);
  line-height: 1.5;
}

.page-faq .faq-index__count {
  padding: 1px 6px;
  border: 1px solid var(--grid-600);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--rock-400);
}

.page-faq .faq-index__link:hover .faq-index__label,
.page-faq .faq-index__link:focus-visible .faq-index__label {
  color: var(--pulse-400);
}

.page-faq .faq-index__link:hover .faq-index__count,
.page-faq .faq-index__link:focus-visible .faq-index__count {
  border-color: var(--pulse-400);
  color: var(--pulse-400);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--pulse-400);
  outline-offset: 3px;
}

.page-faq .faq-index__foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--grid-600);
}

/* 分组 */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 20px);
  padding-top: 16px;
  margin-bottom: 50px;
  border-top: 1px solid var(--grid-600);
}

.page-faq .faq-group__num {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--amber-400);
}

.page-faq .faq-group__num::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--grid-600);
}

.page-faq .faq-group h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(23px, 4.6vw, 32px);
  font-weight: 700;
  line-height: 1.16;
  color: var(--mist-100);
}

.page-faq .faq-group__lede {
  max-width: 58ch;
  margin: 0 0 20px;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--rock-400);
}

/* 配图 */
.page-faq .faq-figure {
  margin: 0 0 22px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--grid-600);
  background: var(--ink-800);
}

.page-faq .faq-figure--square img {
  max-width: 420px;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 2px solid var(--moss-500);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--rock-400);
}

/* 检索示例 */
.page-faq .faq-examples {
  display: grid;
  gap: 10px;
  margin: 0 0 24px;
}

.page-faq .faq-example {
  padding: 12px 14px;
  background: var(--ink-800);
  border: 1px solid var(--grid-600);
  border-left: 3px solid var(--pulse-400);
}

.page-faq .faq-example--bad {
  border-left-color: var(--clay-500);
}

.page-faq .faq-example__tag {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--pulse-400);
}

.page-faq .faq-example--bad .faq-example__tag {
  color: var(--clay-500);
}

.page-faq .faq-example__code {
  display: inline-block;
  margin-bottom: 8px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  color: var(--mist-100);
  background: var(--ink-900);
  border: 1px solid var(--grid-600);
  overflow-wrap: anywhere;
}

.page-faq .faq-example--bad .faq-example__code {
  color: var(--clay-500);
  text-decoration: line-through;
  border-color: rgba(180, 98, 60, 0.35);
}

.page-faq .faq-example__note {
  display: block;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--rock-400);
}

/* 三步流程 */
.page-faq .faq-flow {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-flow li {
  padding: 14px;
  background: var(--ink-800);
  border: 1px solid var(--grid-600);
}

.page-faq .faq-flow__n {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-900);
  background: var(--pulse-400);
}

.page-faq .faq-flow p {
  margin: 0;
  font-size: var(--fs-15);
  line-height: 1.75;
  color: var(--mist-100);
  overflow-wrap: anywhere;
}

/* 手风琴 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--grid-600);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 22px;
  gap: 10px;
  align-items: start;
  padding: 18px 4px 18px 14px;
  border-left: 2px solid transparent;
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-17);
  line-height: 1.6;
  color: var(--mist-100);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

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

.page-faq .faq-item > summary:hover {
  color: var(--pulse-400);
  background: rgba(53, 240, 168, 0.04);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--pulse-400);
  outline-offset: 2px;
}

.page-faq .faq-item[open] > summary {
  border-left-color: var(--pulse-400);
  color: var(--mist-100);
}

.page-faq .faq-item__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  line-height: 1.9;
  color: var(--rock-400);
}

.page-faq .faq-item__q {
  font-weight: 500;
}

.page-faq .faq-item__sign {
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.5;
  text-align: center;
  color: var(--pulse-400);
  user-select: none;
}

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

.page-faq .faq-item[open] .faq-item__sign::before {
  content: "−";
}

.page-faq .faq-item__body {
  padding: 0 8px 22px 46px;
  color: var(--rock-400);
  font-size: var(--fs-15);
  line-height: 1.85;
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
}

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

.page-faq .faq-item__link {
  margin-top: 14px;
}

.page-faq .faq-group__more {
  margin: 24px 0 0;
}

/* 人工支持 */
.page-faq .faq-help {
  margin-top: 8px;
  padding: 26px 20px;
  background: var(--ink-800);
  border: 1px solid var(--grid-600);
  border-top: 2px solid var(--pulse-400);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 22px;
}

.page-faq .faq-help__copy h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.4vw, 34px);
  font-weight: 700;
  line-height: 1.14;
  color: var(--mist-100);
}

.page-faq .faq-help__copy p {
  max-width: 48ch;
  margin: 0 0 16px;
  font-size: var(--fs-15);
  line-height: 1.85;
  color: var(--faq-muted);
}

.page-faq .faq-help__actions {
  margin: 0;
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-help__list li {
  padding: 14px 0;
  border-top: 1px solid var(--grid-600);
}

.page-faq .faq-help__list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-help__label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--sand-200);
}

.page-faq .faq-help__value {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-17);
  letter-spacing: 0.02em;
  color: var(--pulse-400);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__note {
  margin: 0;
  font-size: var(--fs-13);
  line-height: 1.75;
  color: var(--rock-400);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-examples {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-example--bad {
    grid-column: 1 / -1;
  }

  .page-faq .faq-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 56px;
    align-items: start;
    padding-block: 34px 66px;
  }

  .page-faq .faq-hero__panel {
    padding: 26px 24px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-help {
    padding: 34px 32px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    padding-top: 52px;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    padding: 22px 20px 18px;
  }

  .page-faq .faq-item > summary {
    padding-block: 20px;
  }

  .page-faq .faq-item__body {
    padding-left: 54px;
    padding-right: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .btn,
  .page-faq .faq-index__item::before,
  .page-faq .faq-item > summary {
    transition: none;
  }
}
<<<END>>>