.page-topics {
  display: block;
  background: var(--color-surface);
  color: var(--color-ink);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-topics .breadcrumb {
  padding-block-start: var(--space-3);
}

/* ---------- 首屏 ---------- */
.page-topics .topics-hero {
  position: relative;
}

.page-topics .topics-hero-inner {
  display: grid;
  gap: var(--space-6);
  padding-block: var(--space-6) var(--space-6);
}

.page-topics .topics-hero-text {
  min-width: 0;
}

.page-topics .topics-kicker {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-topics .topics-hero h1 {
  margin: 0 0 var(--space-3);
  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);
  color: var(--color-ink);
}

.page-topics .topics-hero .lede {
  margin: 0 0 var(--space-3);
  max-width: 48ch;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-topics .topics-hero .meta-note {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-topics .topics-hero .meta-note a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-topics .topics-hero-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 14 / 9;
  box-shadow: var(--shadow-1);
}

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

.page-topics .topics-hero-stripe {
  height: calc(var(--space-2) - var(--space-1));
  background-image: repeating-linear-gradient(
    0deg,
    var(--color-primary) 0,
    var(--color-primary) 8px,
    var(--color-surface-alt) 8px,
    var(--color-surface-alt) 16px
  );
}

/* ---------- 四组索引 ---------- */
.page-topics .topics-index {
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-topics .topics-index-item {
  min-width: 0;
}

.page-topics .topics-index-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  height: 100%;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-ink);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.page-topics .topics-index-item:nth-child(4n + 1) .topics-index-link {
  background: var(--color-surface-alt);
}

.page-topics .topics-index-item:nth-child(4n + 2) .topics-index-link {
  background: var(--color-primary-soft);
}

.page-topics .topics-index-item:nth-child(4n + 3) .topics-index-link {
  background: var(--color-surface-deep);
}

.page-topics .topics-index-item:nth-child(4n + 4) .topics-index-link {
  background: var(--color-highlight);
}

.page-topics .topics-index-link:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-1);
}

.page-topics .topics-index-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-topics .topics-index-no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

.page-topics .topics-index-name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
}

.page-topics .topics-index-desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-topics .topics-index-count {
  margin-block-start: auto;
  padding-block-start: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

/* ---------- 分组通用 ---------- */
.page-topics .topics-group {
  padding-block: var(--section-y);
}

.page-topics .topics-group--plain {
  background: var(--color-surface);
}

.page-topics .topics-group--alt {
  background: var(--color-surface-alt);
}

.page-topics .topics-group--deep {
  background: var(--color-surface-deep);
}

.page-topics .topics-group--highlight {
  background: var(--color-highlight);
}

.page-topics .group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2) var(--space-3);
  align-items: start;
  margin-bottom: var(--space-6);
}

.page-topics .group-head .chapter-index {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-accent);
}

.page-topics .group-head .chapter-title {
  margin: 0 0 var(--space-2);
  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-topics .group-lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  padding-block-end: var(--space-2);
  border-bottom: var(--border-thin) dashed var(--color-line);
}

/* ---------- 可展开细注 ---------- */
.page-topics .disclosure-trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) 0;
  border: 0;
  border-bottom: var(--border-thin) dashed var(--color-line);
  background: transparent;
  color: var(--color-ink-soft);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  line-height: 1.4;
  cursor: pointer;
  transition: color 200ms ease, background-color 200ms ease;
}

.page-topics .disclosure-trigger:hover {
  color: var(--color-primary);
}

.page-topics .disclosure-trigger:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-topics .disclosure-icon {
  width: calc(var(--space-1) * 1.25);
  height: calc(var(--space-1) * 1.25);
  border-right: calc(var(--border-thin) * 2) solid currentColor;
  border-bottom: calc(var(--border-thin) * 2) solid currentColor;
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform 220ms ease;
}

.page-topics .disclosure[data-open] .disclosure-icon {
  transform: rotate(-135deg) translate(-1px, -1px);
}

.page-topics .disclosure-panel {
  display: none;
  margin-block-start: var(--space-2);
  padding: var(--space-3);
  background: var(--color-primary-soft);
  border-left: calc(var(--border-thin) * 4) solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-topics .disclosure-panel p {
  margin: 0;
}

.page-topics .disclosure-panel a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-topics .disclosure[data-open] .disclosure-panel {
  display: block;
}

/* ---------- 01 赛季走势：横向带状 ---------- */
.page-topics .trend-layout {
  display: grid;
  gap: var(--space-4);
}

.page-topics .trend-strips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-topics .trend-strip {
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border-left: calc(var(--space-1) / 2) solid var(--color-primary);
  box-shadow: var(--shadow-1);
}

.page-topics .trend-title {
  margin: var(--space-1) 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-topics .trend-desc {
  margin: 0 0 var(--space-1);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-topics .trend-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1 / 1;
  margin: 0;
}

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

/* ---------- 02 阵容与伤病：左右对照 ---------- */
.page-topics .squad-layout {
  display: grid;
  gap: var(--space-4);
}

.page-topics .squad-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 10 / 7;
  margin: 0;
}

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

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

.page-topics .squad-entry {
  display: grid;
  gap: var(--space-2);
  padding-block: var(--space-3);
  border-top: var(--border-thin) dashed var(--color-line);
}

.page-topics .squad-entry:first-child {
  border-top: 0;
  padding-block-start: 0;
}

.page-topics .squad-entry-title {
  margin: var(--space-1) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-topics .squad-entry-body p {
  margin: 0 0 var(--space-1);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 03 场次预判：大图 + 两条要点 ---------- */
.page-topics .match-layout {
  display: grid;
  gap: var(--space-4);
}

.page-topics .match-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 10 / 7;
  margin: 0;
}

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

.page-topics .match-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-topics .match-point {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
  padding-block-end: var(--space-3);
  border-bottom: var(--border-thin) dashed var(--color-line);
}

.page-topics .match-point:last-child {
  border-bottom: 0;
  padding-block-end: 0;
}

.page-topics .match-point-index {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-accent);
}

.page-topics .match-point-title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-topics .match-point-body p {
  margin: 0 0 var(--space-1);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 04 队伍深度：单条通栏 ---------- */
.page-topics .depth-feature {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}

.page-topics .depth-feature-title {
  margin: var(--space-1) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-topics .depth-feature-body p {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-topics .depth-feature-body .meta-note {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-topics .depth-feature-body .meta-note a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 05 更新节奏与订阅 ---------- */
.page-topics .rhythm-banner {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 14 / 5;
  margin: 0 0 var(--space-6);
}

.page-topics .rhythm-banner img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-topics .rhythm-list {
  margin: 0 0 var(--space-6);
  display: grid;
  gap: var(--space-3);
}

.page-topics .rhythm-item {
  margin: 0;
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  border-left: calc(var(--space-1) / 2) solid var(--color-accent);
}

.page-topics .rhythm-item dt {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

.page-topics .rhythm-item dd {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-topics .topics-subscribe {
  padding: var(--space-4);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}

.page-topics .subscribe-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-primary-ink);
}

.page-topics .subscribe-desc {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-primary-ink);
}

.page-topics .subscribe-disclosure .disclosure-trigger {
  padding: var(--space-2) var(--space-3);
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--color-primary-ink);
  color: var(--color-primary);
  font-size: var(--text-sm);
}

.page-topics .subscribe-disclosure .disclosure-trigger:hover {
  background: var(--color-highlight);
  color: var(--color-primary);
}

.page-topics .subscribe-disclosure .disclosure-panel {
  background: var(--color-primary-ink);
  border-left-color: var(--color-accent);
  color: var(--color-ink);
}

.page-topics .subscribe-disclosure .disclosure-panel a {
  color: var(--color-accent);
}

.page-topics .subscribe-foot {
  margin: var(--space-3) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-primary-ink);
}

.page-topics .subscribe-foot a {
  color: var(--color-primary-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-topics .subscribe-foot a:hover,
.page-topics .subscribe-disclosure .disclosure-panel a:hover {
  color: var(--color-highlight);
}

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

  .page-topics .rhythm-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-topics .topics-index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-topics .topics-hero-inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
    gap: var(--space-8);
    padding-block: var(--space-8) var(--space-6);
  }

  .page-topics .trend-layout {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-topics .trend-strip:nth-child(2) {
    margin-inline-start: var(--space-4);
  }

  .page-topics .trend-strip:nth-child(3) {
    margin-inline-start: var(--space-6);
  }

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

  .page-topics .squad-media {
    position: sticky;
    top: var(--space-8);
  }

  .page-topics .squad-entry {
    grid-template-columns: minmax(0, 0.42fr) minmax(0, 1fr);
    gap: var(--space-1) var(--space-4);
    align-items: start;
  }

  .page-topics .match-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: center;
  }

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

@media (min-width: 1180px) {
  .page-topics .topics-hero-stripe {
    height: var(--space-2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-topics .topics-index-link,
  .page-topics .disclosure-trigger,
  .page-topics .disclosure-icon {
    transition: none;
  }

  .page-topics .topics-index-link:hover {
    transform: none;
  }
}