/* ================= 赛季观察 / insights ================= */

.page-insights {
  --ins-rail-w: 172px;
  --ins-rail-w-tail: 172px;
}

/* ---------- 首屏 ---------- */
.page-insights .hero {
  padding-block: var(--space-6) var(--space-4);
}

.page-insights .hero-shell {
  position: relative;
  overflow: clip;
  border-radius: var(--radius-lg);
  padding: clamp(14px, 1.8vw, 22px);
  background:
    radial-gradient(120% 95% at 94% 2%, color-mix(in srgb, var(--color-accent) 82%, transparent) 0%, transparent 60%),
    radial-gradient(115% 95% at 2% 98%, color-mix(in srgb, var(--color-primary) 88%, transparent) 0%, transparent 58%),
    linear-gradient(152deg, var(--color-primary) 0%, color-mix(in srgb, var(--color-primary) 38%, var(--color-contrast-surface)) 100%);
}

.page-insights .hero-panel {
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3.4vw, 52px);
}

.page-insights .breadcrumb {
  margin-block-end: var(--space-4);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-insights .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-insights .breadcrumb li + li::before {
  content: "/";
  margin-inline-end: var(--space-1);
  color: var(--color-line);
}

.page-insights .breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: border-color 0.18s ease;
}

.page-insights .breadcrumb a:hover,
.page-insights .breadcrumb a:focus-visible {
  border-bottom-color: currentColor;
}

.page-insights .hero-grid {
  display: grid;
  gap: var(--space-6);
}

.page-insights .hero-kicker {
  margin: 0 0 var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-insights .hero-title {
  display: flex;
  flex-direction: column;
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--color-ink);
}

.page-insights .hero-title-line--alt {
  color: var(--color-primary);
}

.page-insights .hero-side {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

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

.page-insights .hero-figures {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-4) var(--space-6);
  margin: 0;
  padding: var(--space-4) 0 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-insights .hero-figure-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-insights .hero-figure-num {
  font-family: var(--font-mono);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.page-insights .hero-figure-item--lg .hero-figure-num {
  font-size: var(--text-4xl);
}

.page-insights .hero-figure-item--md .hero-figure-num {
  font-size: var(--text-3xl);
  color: var(--color-primary);
}

.page-insights .hero-figure-item--sm .hero-figure-num {
  font-size: var(--text-2xl);
  color: var(--color-ink);
}

.page-insights .hero-figure-label {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-insights .hero-figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: clip;
  border: var(--border-thin) solid var(--color-highlight);
  box-shadow: var(--shadow-1);
}

.page-insights .hero-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-insights .hero-rule {
  margin-block-start: clamp(24px, 3vw, 44px);
  height: var(--border-thin);
  background: var(--color-line);
}

@media (min-width: 900px) {
  .page-insights .hero-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    row-gap: var(--space-4);
    align-items: start;
  }

  .page-insights .hero-title-wrap {
    grid-column: 1 / span 5;
  }

  .page-insights .hero-side {
    grid-column: 6 / span 4;
    padding-top: var(--space-2);
  }

  .page-insights .hero-figure {
    grid-column: 10 / span 3;
    transform: translateY(calc(var(--space-4) * -1));
  }

  .page-insights .hero-figure img {
    aspect-ratio: 3 / 4;
  }
}

/* ---------- 专题筛选条 ---------- */
.page-insights .topic-filter {
  padding-block: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

.page-insights .topic-filter-label {
  margin: 0 0 var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ink);
}

.page-insights .topic-filter-hint {
  margin-inline-start: var(--space-2);
  font-weight: var(--weight-body);
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--color-ink-muted);
}

.page-insights .topic-list {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--space-4);
  margin: 0;
  padding: 0 0 var(--space-1);
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-insights .topic-list a {
  display: inline-block;
  white-space: nowrap;
  padding-block-end: 6px;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-insights .topic-list a:hover,
.page-insights .topic-list a:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- 条目流 ---------- */
.page-insights .stream {
  padding-block: var(--section-y);
}

.page-insights .stream--tail {
  padding-block-start: var(--space-8);
}

.page-insights .stream-head {
  max-width: var(--measure);
  margin-block-end: var(--space-6);
}

.page-insights .stream-lede {
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-insights .stream-layout {
  display: grid;
  gap: var(--space-4);
}

/* 赛季竖轴 */
.page-insights .season-rail ol {
  display: flex;
  gap: var(--space-3);
  margin: 0;
  padding: 0 0 var(--space-2);
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-insights .season-rail a {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  white-space: nowrap;
  padding-block: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-insights .season-rail a:hover,
.page-insights .season-rail a:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.page-insights .rail-count {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  font-variant-numeric: tabular-nums;
}

.page-insights .season-rail--static {
  display: none;
}

/* 条目 */
.page-insights .season-block {
  scroll-margin-top: 120px;
}

.page-insights .season-mark {
  margin: 0;
  padding-block: var(--space-3) var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-insights .season-mark-year {
  font-family: var(--font-mono);
  color: var(--color-primary);
  margin-inline-end: 4px;
}

.page-insights .entry {
  display: grid;
  gap: var(--space-2);
  padding-block: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
  scroll-margin-top: 120px;
}

.page-insights .entry-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.page-insights .entry-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.08em;
  color: var(--color-accent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-accent) 9%, transparent);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-accent) 24%, transparent);
}

.page-insights .entry-season {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-insights .entry-title {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  transition: color 0.18s ease;
}

.page-insights .entry:hover .entry-title {
  color: var(--color-accent);
}

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

.page-insights .entry-note {
  margin: 0;
  padding-inline-start: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
  border-inline-start: 2px solid color-mix(in srgb, var(--color-primary) 30%, transparent);
  transition: color 0.18s ease, border-color 0.18s ease;
  max-width: var(--measure);
}

.page-insights .entry:hover .entry-note,
.page-insights .entry:focus-within .entry-note {
  color: var(--color-ink-soft);
  border-inline-start-color: var(--color-accent);
}

.page-insights .entry-spark {
  display: block;
  width: 132px;
  max-width: 100%;
  height: auto;
  color: var(--color-accent);
  opacity: 0.85;
}

.page-insights .entry-link {
  justify-self: start;
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 34%, transparent);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-insights .entry-link:hover,
.page-insights .entry-link:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* 流内插图 */
.page-insights .stream-figure {
  margin: var(--space-4) 0 0;
  border-radius: var(--radius-md);
  overflow: clip;
  border: var(--border-thin) solid var(--color-line);
}

.page-insights .stream-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-insights .stream-figure--narrow {
  max-width: 560px;
}

.page-insights .stream-figure-cap {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
}

@media (min-width: 1024px) {
  .page-insights .stream-layout {
    grid-template-columns: var(--ins-rail-w) minmax(0, 1fr);
    column-gap: var(--gutter);
    align-items: start;
  }

  .page-insights .season-rail {
    position: sticky;
    top: 120px;
  }

  .page-insights .season-rail ol {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
  }

  .page-insights .season-rail a {
    justify-content: space-between;
    white-space: normal;
  }

  .page-insights .season-rail--static {
    display: block;
  }

  .page-insights .rail-static-note {
    margin: 0;
    padding-block: var(--space-2);
    font-size: var(--text-xs);
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-ink-muted);
    border-top: var(--border-thin) solid var(--color-line);
  }
}

/* ---------- 暗场：观察与数据的关系 ---------- */
.page-insights .readout {
  padding-block: var(--section-y-lg);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-insights .readout-grid {
  display: grid;
  gap: var(--space-6);
}

.page-insights .readout-kicker {
  margin: 0 0 var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.page-insights .readout-title {
  margin: 0 0 var(--space-4);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-insights .readout-text {
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
  max-width: var(--measure);
}

.page-insights .readout-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
  padding: var(--space-4) 0 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-insights .readout-links a {
  display: inline-block;
  font-size: var(--text-sm);
  color: var(--color-contrast-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-insights .readout-links a:hover,
.page-insights .readout-links a:focus-visible {
  color: var(--color-contrast-ink);
  border-bottom-color: var(--color-contrast-accent);
}

.page-insights .readout-figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: clip;
  border: var(--border-thin) solid var(--color-contrast-line);
}

.page-insights .readout-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-insights .readout-cap {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-insights .readout-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-6);
  margin: var(--space-4) 0 0;
}

.page-insights .readout-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-insights .readout-stat dt {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-insights .readout-stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  color: var(--color-contrast-accent);
  font-variant-numeric: tabular-nums;
}

@media (min-width: 900px) {
  .page-insights .readout-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: var(--space-8);
    align-items: start;
  }
}

/* ---------- 投稿与纠错 ---------- */
.page-insights .contribute {
  padding-block: var(--section-y);
}

.page-insights .contribute-panel {
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3.4vw, 52px);
}

.page-insights .section-kicker {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-insights .contribute-title {
  margin: 0 0 var(--space-3);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

.page-insights .contribute-steps {
  display: grid;
  gap: 0;
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.page-insights .contribute-step {
  display: grid;
  gap: var(--space-1);
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-insights .contribute-step:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-insights .step-index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-accent);
}

.page-insights .step-title {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-insights .step-text {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-insights .contribute-foot {
  display: grid;
  gap: var(--space-4);
  margin-block-start: var(--space-6);
  padding-block-start: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-insights .contribute-contact {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-insights .contribute-contact a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 34%, transparent);
}

.page-insights .contribute-contact a:hover,
.page-insights .contribute-contact a:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.page-insights .contribute-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0;
}

@media (min-width: 900px) {
  .page-insights .contribute-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--gutter);
  }

  .page-insights .contribute-step {
    padding-inline-end: var(--space-4);
  }

  .page-insights .contribute-step:nth-child(odd) {
    border-inline-end: var(--border-thin) solid var(--color-line);
    padding-inline-end: var(--space-6);
  }

  .page-insights .contribute-step:nth-child(-n + 2) {
    padding-block-start: var(--space-4);
  }

  .page-insights .contribute-foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    column-gap: var(--space-6);
  }

  .page-insights .contribute-links {
    justify-content: flex-end;
  }
}

/* ---------- 焦点与降级 ---------- */
.page-insights a:focus-visible,
.page-insights .entry:focus-within {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .page-insights *,
  .page-insights *::before,
  .page-insights *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}
</main>