.page-community {
  --community-rail: 92px;
  --community-bar-h: 8px;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

.page-community h2 {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: 0;
}

.page-community h3 {
  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);
  margin: 0;
}

.page-community p {
  margin: 0;
}

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

.page-community a:focus-visible,
.page-community button:focus-visible,
.page-community summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-community .media-frame {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

.page-community .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-community .community-hero__media { aspect-ratio: 1100 / 620; }
.page-community .dist-figure { aspect-ratio: 900 / 560; }
.page-community .fix-figure { aspect-ratio: 880 / 480; }

/* ---------- 首屏 ---------- */
.page-community .community-hero {
  position: relative;
  padding-block: var(--space-4) var(--space-8);
  background: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-community .community-hero::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block: 0;
  width: var(--border-thick);
  background: var(--color-primary);
}

.page-community .community-hero__crumb {
  margin: 0 0 var(--space-6);
}

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

.page-community .community-hero__copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-community .community-hero__tag {
  align-self: flex-start;
}

.page-community .display-title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: 0;
  max-width: 18ch;
}

.page-community .community-hero__lede {
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: 52ch;
}

.page-community .community-hero__navrow {
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: var(--border-thick) solid var(--color-primary);
  display: grid;
  gap: var(--space-6);
}

.page-community .group-rail {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-community .group-rail a {
  display: block;
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: 0.18em;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  line-height: 1.1;
  color: var(--color-ink-soft);
  text-decoration: none;
  padding: var(--space-1);
  border-left: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  transition: color 140ms ease, background-color 140ms ease, border-color 140ms ease;
}

.page-community .group-rail a:hover {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  background: var(--color-highlight);
}

.page-community .community-hero__figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.page-community .figure-item {
  padding: var(--space-2) 0 var(--space-2) var(--space-2);
  border-left: var(--border-thick) solid var(--color-primary);
}

.page-community .figure-item__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.page-community .figure-item__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* ---------- 问答库 ---------- */
.page-community .qa-band {
  padding-block: var(--section-y);
  background: var(--color-surface-alt);
}

.page-community .qa-band__head {
  display: grid;
  gap: var(--space-3);
  max-width: 68ch;
}

.page-community .qa-band__head-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-community .qa-band__head-text .vertical-tag {
  align-self: flex-start;
}

.page-community .qa-band__head p {
  color: var(--color-ink-soft);
  max-width: 60ch;
}

.page-community .qa-filter {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.page-community .filter-chip[aria-pressed="true"] {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

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

.page-community .qa-group {
  display: grid;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: var(--border-thick) solid var(--color-primary);
}

.page-community .qa-group[hidden] {
  display: none;
}

.page-community .qa-group__rail {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

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

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

.page-community .qa-item {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: hidden;
  transition: background-color 140ms ease, border-color 140ms ease;
}

.page-community .qa-item:nth-child(even) {
  background: var(--color-surface-deep);
}

.page-community .qa-item > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.4;
  color: var(--color-ink);
}

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

.page-community .qa-item > summary::before {
  content: "Q";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.7;
  padding-inline: var(--space-1);
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-community .qa-item[open] > summary {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-community .qa-item[open] > summary::before {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-community .qa-item__answer {
  padding: var(--space-3) var(--space-3) var(--space-4);
  display: grid;
  gap: var(--space-2);
  max-width: var(--measure);
  color: var(--color-ink-soft);
  border-left: var(--border-thick) solid var(--color-primary-soft);
}

.page-community .qa-item__answer a {
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* ---------- 话题分布 ---------- */
.page-community .dist-band {
  padding-block: var(--section-y-lg);
  background: var(--color-surface-deep);
}

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

.page-community .dist-copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-community .dist-copy .vertical-tag {
  align-self: flex-start;
}

.page-community .dist-copy p {
  color: var(--color-ink-soft);
}

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

.page-community .dist-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-1) var(--space-2);
  padding: var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  transition: background-color 140ms ease;
}

.page-community .dist-row:hover {
  background: var(--color-primary-soft);
}

.page-community .dist-row__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
}

.page-community .dist-row__val {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.page-community .dist-row__bar {
  grid-column: 1 / -1;
  display: block;
  height: var(--community-bar-h);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  overflow: hidden;
}

.page-community .dist-row__fill {
  display: block;
  height: 100%;
  width: var(--w, 50%);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.page-community .dist-row__fill--alt {
  background: var(--color-accent);
}

.page-community .dist-figure {
  margin-top: var(--space-8);
}

/* ---------- 纠错流程 ---------- */
.page-community .fix-band {
  padding-block: var(--section-y);
  background: var(--color-surface);
}

.page-community .fix-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 66ch;
}

.page-community .fix-head .vertical-tag {
  align-self: flex-start;
}

.page-community .fix-head p {
  color: var(--color-ink-soft);
  max-width: 58ch;
}

.page-community .fix-grid {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-6);
}

.page-community .fix-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-community .fix-step {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thick) solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
}

.page-community .fix-step__idx {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-community .fix-step h3 {
  font-size: var(--text-lg);
}

.page-community .fix-step p {
  color: var(--color-ink-soft);
  font-size: var(--text-base);
}

.page-community .fix-note {
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

/* ---------- 反色行动带 ---------- */
.page-community .cta-band {
  padding-block: var(--space-8);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thick) solid var(--color-primary);
}

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

.page-community .cta-copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-community .cta-copy .vertical-tag--contrast {
  align-self: flex-start;
}

.page-community .cta-copy h2 {
  color: var(--color-contrast-ink);
  max-width: 22ch;
}

.page-community .cta-copy p {
  color: var(--color-contrast-ink);
  opacity: 0.82;
  max-width: 56ch;
}

.page-community .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-content: start;
}

.page-community .cta-actions a {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
  text-decoration: none;
  transition: border-color 140ms ease, background-color 140ms ease, color 140ms ease;
}

.page-community .cta-actions a:first-child {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-community .cta-actions a:last-child:hover {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-community .community-hero__figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-community .fix-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-community .community-hero {
    padding-block: var(--space-6) var(--section-y);
  }

  .page-community .community-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: var(--space-8);
  }

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

  .page-community .group-rail {
    flex-wrap: nowrap;
  }

  .page-community .qa-group {
    grid-template-columns: var(--community-rail) minmax(0, 1fr);
    gap: var(--space-4);
    padding-top: var(--space-6);
  }

  .page-community .qa-group__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .page-community .dist-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-community .fix-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-community .cta-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: var(--space-8);
  }

  .page-community .cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1040px) {
  .page-community .fix-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-community {
  --w: 1rem;
}