.page-community {
  --qa-rail: 288px;
}

/* ---------- 面包屑间距 ---------- */
.page-community .breadcrumb {
  margin-block: var(--space-3) var(--space-1);
}

/* ---------- 通用图片处理 ---------- */
.page-community .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 首屏 ---------- */
.page-community .qa-hero {
  padding-block: var(--space-4) var(--space-8);
}

.page-community .qa-hero__title {
  margin: var(--space-3) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.02;
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  text-wrap: balance;
}

.page-community .qa-hero__lead {
  max-width: var(--measure);
  margin: var(--space-4) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-community .qa-hero__frame {
  position: relative;
  margin: var(--space-6) 0 0;
  aspect-ratio: 1600 / 760;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-community .qa-hero__directory {
  margin-block-start: var(--space-8);
  display: grid;
  gap: var(--space-6);
}

/* 问答索引 */
.page-community .qa-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.page-community .qa-index__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  height: 100%;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: inherit;
  transition: background-color 160ms ease, transform 160ms ease;
}

.page-community .qa-index__link:hover,
.page-community .qa-index__link:focus-visible {
  background: var(--color-primary-soft);
  transform: translateY(-2px);
}

.page-community .qa-index__link:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

.page-community .qa-index__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  transition: color 160ms ease;
}

.page-community .qa-index__link:hover .qa-index__num,
.page-community .qa-index__link:focus-visible .qa-index__num {
  color: var(--color-accent);
}

.page-community .qa-index__q {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-soft);
}

/* 胶囊分类 */
.page-community .qa-cats {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.page-community .qa-cats__link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.page-community .qa-cats__link:hover,
.page-community .qa-cats__link:focus-visible {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.page-community .qa-cats__link:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

.page-community .qa-cats__lamp {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.page-community .qa-cats__name {
  flex: 1 1 auto;
}

.page-community .qa-cats__count {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 问答分组 ---------- */
.page-community .qa-group {
  padding-block: var(--space-8);
  border-top: 1px dotted var(--color-line);
}

.page-community .qa-group__inner {
  display: grid;
  gap: var(--space-4);
}

.page-community .qa-group__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-primary);
}

.page-community .qa-group__title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-community .qa-group__note {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.page-community .qa-group__note a {
  color: var(--color-primary);
}

.page-community .qa-group__list {
  display: grid;
  gap: var(--space-2);
}

/* 答案卡 */
.page-community .qa-card {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  overflow: hidden;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.page-community .qa-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
  border-color: color-mix(in srgb, var(--color-primary) 38%, var(--color-line));
}

.page-community .qa-card__head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  cursor: pointer;
  list-style: none;
}

.page-community .qa-card__head::-webkit-details-marker {
  display: none;
}

.page-community .qa-card__head::marker {
  content: "";
}

.page-community .qa-card__head:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: -4px;
}

.page-community .qa-card__num {
  flex: none;
  min-width: 2ch;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-community .qa-card__q {
  flex: 1 1 auto;
  font-size: var(--text-lg);
  font-weight: 500;
  line-height: 1.35;
  color: var(--color-ink);
}

.page-community .qa-card__lamp {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-surface-deep);
  box-shadow: inset 0 0 0 1px var(--color-line);
  transition: background-color 160ms ease, box-shadow 160ms ease;
}

.page-community .qa-card[open] .qa-card__lamp {
  background: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
  animation: qa-lamp-breathe 2.4s ease-in-out infinite;
}

@keyframes qa-lamp-breathe {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.42; }
}

.page-community .qa-card__body {
  padding: 0 var(--space-3) var(--space-4);
}

.page-community .qa-card__body p {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-community .qa-card__body .qa-card__aside {
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px dotted var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

.page-community .qa-card__body a {
  color: var(--color-primary);
}

/* ---------- 中段图文转角 ---------- */
.page-community .qa-band {
  padding-block: var(--space-8);
}

.page-community .qa-band__inner {
  display: grid;
  gap: var(--space-4);
}

.page-community .qa-band__frame {
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-community .qa-band__copy h2 {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-community .qa-band__copy p {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 发言规则（反相区块） ---------- */
.page-community .qa-rules {
  padding-block: var(--space-8);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-community .qa-rules__grid {
  display: grid;
  gap: var(--space-6);
}

.page-community .qa-rules__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-accent);
}

.page-community .qa-rules__title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-community .qa-rules__note {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent);
}

.page-community .qa-rules__frame {
  margin: var(--space-4) 0 0;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-community .qa-rules__list {
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

.page-community .qa-rules .qa-card {
  background: transparent;
  border-color: var(--color-contrast-line);
}

.page-community .qa-rules .qa-card:hover {
  border-color: var(--color-contrast-accent);
  box-shadow: 0 0 28px color-mix(in srgb, var(--color-contrast-accent) 28%, transparent);
}

.page-community .qa-rules .qa-card__num {
  color: var(--color-contrast-accent);
}

.page-community .qa-rules .qa-card__q {
  color: var(--color-contrast-ink);
}

.page-community .qa-rules .qa-card__body p {
  color: var(--color-contrast-ink);
}

.page-community .qa-rules .qa-card__body .qa-card__aside {
  border-top-color: var(--color-contrast-line);
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-community .qa-rules .qa-card__lamp {
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--color-contrast-line);
}

.page-community .qa-rules .qa-card[open] .qa-card__lamp {
  background: var(--color-contrast-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-contrast-accent) 26%, transparent);
}

/* ---------- 行动出口 ---------- */
.page-community .qa-exit {
  padding-block: var(--space-8);
}

.page-community .qa-exit__panel {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-6) var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
}

.page-community .qa-exit__copy h2 {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-community .qa-exit__copy p {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-community .qa-exit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-community .qa-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-community .qa-group__rail {
    max-width: 46ch;
  }

  .page-community .qa-band__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: var(--space-6);
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-community .qa-hero__directory {
    grid-template-columns: minmax(0, 1fr) 248px;
    align-items: start;
  }

  .page-community .qa-group {
    padding-block: var(--space-8) var(--space-8);
  }

  .page-community .qa-group__inner {
    grid-template-columns: var(--qa-rail) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-community .qa-group--offset .qa-group__inner {
    padding-inline-start: var(--space-6);
  }

  .page-community .qa-group__rail {
    position: sticky;
    top: var(--space-8);
    max-width: none;
  }

  .page-community .qa-rules__grid {
    grid-template-columns: var(--qa-rail) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-community .qa-exit__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    padding: var(--space-8) var(--space-6);
    gap: var(--space-6);
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .page-community .qa-index__link,
  .page-community .qa-cats__link,
  .page-community .qa-card,
  .page-community .qa-card__lamp,
  .page-community .qa-index__num {
    transition: none;
  }

  .page-community .qa-index__link:hover,
  .page-community .qa-index__link:focus-visible,
  .page-community .qa-cats__link:hover,
  .page-community .qa-cats__link:focus-visible,
  .page-community .qa-card:hover {
    transform: none;
  }

  .page-community .qa-card[open] .qa-card__lamp {
    animation: none;
  }
}
<<<END>>>