/* ===== 交流社区 page-community ===== */
.page-community {
  --pc-slant: 28px;
  --pc-notch: 14px;
}

/* ---------- 首屏：主题墙 ---------- */
.page-community .community-hero {
  position: relative;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  overflow: hidden;
  padding-block: var(--space-6) var(--space-8);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - var(--pc-slant)));
}

.page-community .community-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-community .community-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.page-community .community-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-community .community-hero__inner {
  position: relative;
  z-index: 1;
  padding-block: var(--space-4);
}

.page-community .community-hero__eyebrow {
  margin: var(--space-3) 0 var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-contrast-accent);
}

.page-community .community-hero__title {
  margin: 0;
  max-width: 20ch;
  color: var(--color-contrast-ink);
}

.page-community .community-hero__lead {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

.page-community .community-nums {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: var(--space-3) 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-2);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-community .community-num__v {
  display: block;
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-accent);
  text-shadow: 0 0 18px color-mix(in srgb, var(--color-contrast-accent) 50%, transparent);
}

.page-community .community-num__l {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

/* ---------- 分组跳转条 ---------- */
.page-community .community-jump {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-community .community-jump__list {
  list-style: none;
  margin: 0;
  padding: var(--space-2) 0;
  display: flex;
  gap: var(--space-1);
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-community .community-jump__link {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  min-height: 44px;
  box-sizing: border-box;
  align-content: center;
  white-space: nowrap;
  text-decoration: none;
  color: inherit;
  font-size: var(--text-sm);
  font-weight: 700;
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary-ink) 42%, transparent);
  border-radius: var(--radius-sm);
  transition: background-color 150ms linear, border-color 150ms linear, color 150ms linear;
}

.page-community .community-jump__link .mono {
  color: color-mix(in srgb, var(--color-primary-ink) 68%, transparent);
}

.page-community .community-jump__link:hover,
.page-community .community-jump__link:focus-visible {
  background-color: var(--color-contrast-surface);
  border-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-community .community-jump__link:hover .mono,
.page-community .community-jump__link:focus-visible .mono {
  color: var(--color-contrast-accent);
}

/* ---------- 讨论分组 ---------- */
.page-community .community-topics__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-community .topic-group {
  position: relative;
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  transition: border-color 150ms linear, box-shadow 150ms linear, transform 150ms linear;
}

.page-community .topic-group:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-1);
  transform: translate(-2px, -2px);
}

.page-community .topic-group__dot {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: var(--space-1);
  height: var(--space-1);
  border-radius: 50%;
  background-color: var(--color-contrast-accent);
  opacity: 0;
  transition: opacity 150ms linear;
}

.page-community .topic-group:hover .topic-group__dot {
  opacity: 1;
}

.page-community .topic-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-1) var(--space-2);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-community .topic-group__idx {
  grid-column: 1;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
}

.page-community .topic-group__name {
  grid-column: 2;
  justify-self: start;
  margin: 0;
  padding: var(--space-1) var(--space-3) var(--space-1) var(--space-2);
  background-color: var(--color-primary-soft);
  color: var(--color-ink);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  clip-path: polygon(0 0, 100% 0, calc(100% - var(--pc-notch)) 100%, 0 100%);
}

.page-community .community-topics__list > .topic-group:nth-child(even) .topic-group__name {
  background-color: var(--color-highlight);
}

.page-community .topic-group__focus {
  grid-column: 1 / -1;
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-community .topic-group__field {
  grid-column: 1 / -1;
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-community .topic-group__field-key {
  display: inline-block;
  margin-right: var(--space-1);
  padding: 2px var(--space-1);
  background-color: var(--color-surface-deep);
  border-radius: var(--radius-sm);
  font-weight: 700;
  color: var(--color-ink-soft);
}

/* ---------- 折叠问答 ---------- */
.page-community .topic-group__items .qa-item {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-community .topic-group__items .qa-item:last-child {
  border-bottom: 0;
}

.page-community .topic-group__items .qa-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  min-height: 44px;
  box-sizing: border-box;
  padding: var(--space-2) 0;
  font-size: var(--text-base);
  font-weight: 700;
  line-height: var(--leading-body);
  color: var(--color-ink);
  transition: color 140ms linear;
}

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

.page-community .topic-group__items .qa-item > summary::before {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-primary);
}

.page-community .topic-group__items .qa-item[open] > summary::before {
  content: "\2013";
}

.page-community .topic-group__items .qa-item > summary:hover,
.page-community .topic-group__items .qa-item > summary:focus-visible {
  color: var(--color-primary);
}

.page-community .topic-group__items .qa-item__body {
  margin-left: var(--space-1);
  padding: 0 0 var(--space-3) var(--space-2);
  border-left: var(--border-thin) solid var(--color-highlight);
  max-width: var(--measure);
}

.page-community .topic-group__items .qa-item__body p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 分组中段配图 ---------- */
.page-community .community-topics__figure {
  margin: 0;
}

.page-community .community-topics__figure .figure__caption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

/* ---------- 提问格式 ---------- */
.page-community .community-ask__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-community .community-ask__lead {
  margin: var(--space-2) 0 var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-community .community-steps {
  margin: 0 0 var(--space-4);
}

.page-community .community-step__title {
  margin: 0 0 var(--space-1);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-community .community-steps .step p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-community .community-ask__sub {
  margin: 0 0 var(--space-2);
  padding-left: var(--space-2);
  border-left: var(--border-thick) solid var(--color-accent);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

.page-community .community-fields {
  list-style: none;
  margin: 0 0 var(--space-3);
  padding: 0;
  display: grid;
  gap: var(--space-1);
}

.page-community .community-fields li {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-highlight);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  color: var(--color-ink);
}

.page-community .community-fields .mono {
  flex: 0 0 auto;
  font-weight: 700;
  color: var(--color-accent);
}

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

.page-community .community-ask__figure {
  margin: 0;
}

.page-community .community-ask__figure .figure__caption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

/* ---------- 分歧与秩序 ---------- */
.page-community .community-order__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-community .community-order__col {
  padding: var(--space-3);
  background-color: var(--color-surface);
  border-radius: var(--radius-sm);
  border-top: var(--border-thick) solid var(--color-line);
}

.page-community .community-order__col--keep {
  border-top-color: var(--color-accent);
}

.page-community .community-order__col--drop {
  border-top-color: var(--color-primary);
}

.page-community .community-order__col h3 {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-community .community-order__col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-community .community-order__col li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-community .community-order__col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(var(--space-2) + 2px);
  width: var(--space-1);
  height: var(--border-thin);
  background-color: var(--color-line);
}

.page-community .community-order__col--keep li::before {
  background-color: var(--color-accent);
}

.page-community .community-order__col--drop li::before {
  background-color: var(--color-primary);
}

.page-community .community-order .note {
  margin-top: var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

/* ---------- 讨论节奏（暗区） ---------- */
.page-community .community-rhythm__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-community .community-rhythm .eyebrow {
  color: var(--color-contrast-accent);
}

.page-community .community-rhythm .section-title {
  color: var(--color-contrast-ink);
}

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

.page-community .community-rhythm__facts {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: var(--space-3) 0 0;
  display: grid;
  gap: var(--space-2);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-community .community-rhythm__facts li {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 86%, transparent);
}

.page-community .community-rhythm__facts .mono {
  flex: 0 0 auto;
  min-width: 9ch;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-accent);
}

.page-community .community-rhythm__map {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
  background-color: color-mix(in srgb, var(--color-contrast-accent) 8%, transparent);
}

.page-community .community-rhythm__map-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--color-contrast-accent);
}

.page-community .community-map {
  display: block;
  width: 100%;
  height: auto;
}

.page-community .community-map__edges line {
  stroke: var(--color-contrast-line);
  stroke-width: 2;
  stroke-dasharray: 7 5;
}

.page-community .community-map__nodes circle {
  fill: var(--color-contrast-surface);
  stroke: var(--color-contrast-accent);
  stroke-width: 3;
}

.page-community .community-map__labels text {
  fill: var(--color-contrast-ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
}

.page-community .community-rhythm__map-note {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}

.page-community .community-rhythm .link-underline {
  color: var(--color-contrast-accent);
}

/* ---------- 收尾 ---------- */
.page-community .community-outro__title {
  margin-bottom: var(--space-2);
}

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

/* ---------- 中屏 ---------- */
@media (min-width: 700px) {
  .page-community .community-nums {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-community .community-num__v {
    font-size: var(--text-3xl);
  }

  .page-community .community-order__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-community .community-hero {
    padding-block: var(--space-8) var(--space-8);
  }

  .page-community .community-topics__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-community .community-ask__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: var(--space-6);
    align-items: start;
  }

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

  .page-community .community-steps {
    max-width: var(--measure);
  }
}

/* ---------- 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-community .topic-group,
  .page-community .topic-group__dot,
  .page-community .community-jump__link,
  .page-community .topic-group__items .qa-item > summary {
    transition: none;
  }

  .page-community .topic-group:hover {
    transform: none;
  }
}