.page-insights {
  --pi-fade-w: 72px;
  --pi-entry-gap: clamp(24px, 4vw, 44px);
  background: var(--color-surface);
  color: var(--color-ink);
}

.page-insights .shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  box-sizing: border-box;
}

.page-insights .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

/* ---------- 首屏 ---------- */

.page-insights .pi-hero {
  position: relative;
  padding: var(--space-8) 0 var(--space-6);
  overflow: hidden;
  background:
    radial-gradient(115% 92% at 92% -8%, var(--color-primary-soft) 0%, transparent 58%),
    radial-gradient(90% 70% at 0% 100%, color-mix(in srgb, var(--color-highlight) 70%, transparent) 0%, transparent 62%),
    var(--color-surface);
}

.page-insights .pi-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    radial-gradient(color-mix(in srgb, var(--color-ink) 7%, transparent) 0.5px, transparent 0.6px);
  background-size: 7px 7px;
}

.page-insights .pi-hero .shell {
  position: relative;
  z-index: 1;
}

.page-insights .pi-hero .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  font-size: var(--text-sm);
  margin-bottom: var(--space-6);
}

.page-insights .pi-hero .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: var(--space-1);
  color: var(--color-ink-muted);
}

.page-insights .pi-hero__kicker {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-primary);
}

.page-insights .pi-hero__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);
  color: var(--color-ink);
  margin: 0 0 var(--space-4);
  max-width: 14ch;
}

.page-insights .pi-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-insights .pi-hero__split {
  margin-top: var(--space-8);
  align-items: start;
  gap: var(--space-6);
}

.page-insights .pi-hero__feature {
  display: grid;
  gap: var(--space-4);
  min-width: 0;
}

.page-insights .pi-hero__feature-body {
  display: grid;
  gap: var(--space-2);
  justify-items: start;
}

.page-insights .pi-hero__feature-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-insights .pi-hero__feature-text {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: 52ch;
}

.page-insights .pi-hero__stats {
  display: grid;
  gap: var(--space-3);
  min-width: 0;
}

.page-insights .pi-stat {
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-1);
}

.page-insights .pi-stat--warm {
  background: var(--color-primary-soft);
}

.page-insights .pi-stat--soft {
  background: var(--color-highlight);
}

.page-insights .pi-stat--deep {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-insights .pi-stat__num {
  display: block;
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.page-insights .pi-stat--soft .pi-stat__num {
  color: var(--color-accent);
}

.page-insights .pi-stat--deep .pi-stat__num {
  color: var(--color-contrast-accent);
}

.page-insights .pi-stat__label {
  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: inherit;
}

.page-insights .pi-stat__note {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-insights .pi-stat--deep .pi-stat__note {
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}

/* ---------- 横向看点带 ---------- */

.page-insights .pi-band {
  position: relative;
  margin-top: var(--space-8);
}

.page-insights .pi-band::before,
.page-insights .pi-band::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: var(--pi-fade-w);
  pointer-events: none;
  z-index: 2;
}

.page-insights .pi-band::before {
  left: calc(var(--gutter) * -1);
  background: linear-gradient(90deg, var(--color-surface) 0%, transparent 100%);
}

.page-insights .pi-band::after {
  right: calc(var(--gutter) * -1);
  background: linear-gradient(270deg, var(--color-surface) 0%, transparent 100%);
}

.page-insights .pi-band__scroller {
  display: flex;
  gap: var(--space-3);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  padding: var(--space-1) 0 var(--space-3);
  scrollbar-width: thin;
  scrollbar-color: var(--color-line) transparent;
}

.page-insights .pi-band__scroller:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.page-insights .pi-band__item {
  flex: 0 0 min(76%, 300px);
  scroll-snap-align: start;
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  background: var(--color-surface-alt);
  min-width: 0;
}

.page-insights .pi-band__no {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.page-insights .pi-band__text {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink);
}

/* ---------- 条目流 ---------- */

.page-insights .pi-flow {
  padding: var(--section-y) 0 var(--section-y-lg);
  background: var(--color-surface);
}

.page-insights .pi-flow .section-head {
  max-width: 62ch;
  margin-bottom: var(--space-6);
}

.page-insights .pi-flow .section-head__kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-accent);
}

.page-insights .pi-flow .section-head__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-3);
}

.page-insights .pi-flow .section-head__note {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 方向筛选 ---------- */

.page-insights .pi-filter__bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-6) 0 var(--space-8);
}

.page-insights .pi-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-pill);
  background: var(--color-surface-alt);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  line-height: 1.3;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.page-insights .pi-chip .num {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  transition: color 0.2s ease;
}

.page-insights .pi-chip:hover {
  background: var(--color-surface-deep);
}

.page-insights #pi-t-all:checked ~ .pi-filter__bar label[for="pi-t-all"],
.page-insights #pi-t1:checked ~ .pi-filter__bar label[for="pi-t1"],
.page-insights #pi-t2:checked ~ .pi-filter__bar label[for="pi-t2"],
.page-insights #pi-t3:checked ~ .pi-filter__bar label[for="pi-t3"],
.page-insights #pi-t4:checked ~ .pi-filter__bar label[for="pi-t4"],
.page-insights #pi-t5:checked ~ .pi-filter__bar label[for="pi-t5"] {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-insights #pi-t-all:checked ~ .pi-filter__bar label[for="pi-t-all"] .num,
.page-insights #pi-t1:checked ~ .pi-filter__bar label[for="pi-t1"] .num,
.page-insights #pi-t2:checked ~ .pi-filter__bar label[for="pi-t2"] .num,
.page-insights #pi-t3:checked ~ .pi-filter__bar label[for="pi-t3"] .num,
.page-insights #pi-t4:checked ~ .pi-filter__bar label[for="pi-t4"] .num,
.page-insights #pi-t5:checked ~ .pi-filter__bar label[for="pi-t5"] .num {
  color: color-mix(in srgb, var(--color-primary-ink) 78%, transparent);
}

.page-insights #pi-t1:checked ~ .pi-stream .pi-group:not([data-topic="t1"]),
.page-insights #pi-t2:checked ~ .pi-stream .pi-group:not([data-topic="t2"]),
.page-insights #pi-t3:checked ~ .pi-stream .pi-group:not([data-topic="t3"]),
.page-insights #pi-t4:checked ~ .pi-stream .pi-group:not([data-topic="t4"]),
.page-insights #pi-t5:checked ~ .pi-stream .pi-group:not([data-topic="t5"]) {
  display: none;
}

/* ---------- 分组 ---------- */

.page-insights .pi-stream {
  display: block;
}

.page-insights .pi-group + .pi-group {
  margin-top: var(--space-8);
  padding-top: var(--space-8);
}

.page-insights .pi-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-2) var(--space-3);
  margin-bottom: var(--space-6);
}

.page-insights .pi-group__no {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
}

.page-insights .pi-group:nth-of-type(2) .pi-group__no {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-insights .pi-group:nth-of-type(3) .pi-group__no {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
}

.page-insights .pi-group:nth-of-type(4) .pi-group__no {
  background: var(--color-surface-deep);
  color: var(--color-ink);
}

.page-insights .pi-group:nth-of-type(5) .pi-group__no {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.page-insights .pi-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-insights .pi-group__note {
  grid-column: 2 / -1;
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
  max-width: 60ch;
}

.page-insights .pi-group__media {
  margin: 0 0 var(--space-6);
  max-width: 720px;
}

.page-insights .pi-group__media--narrow {
  max-width: 380px;
}

/* ---------- 图片 ---------- */

.page-insights .figure {
  margin: 0;
}

.page-insights .figure__media {
  display: block;
  overflow: hidden;
  border-radius: 0;
  background: var(--color-surface-alt);
}

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

.page-insights .figure__caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

/* ---------- 条目 ---------- */

.page-insights .pi-entry {
  max-width: var(--measure);
}

.page-insights .pi-entry + .pi-entry {
  margin-top: var(--pi-entry-gap);
}

.page-insights .pi-entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.page-insights .pi-entry__time {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-insights .pi-entry__title {
  margin: 0 0 var(--space-2);
  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-insights .pi-entry:first-of-type .pi-entry__title {
  font-size: var(--text-xl);
}

.page-insights .pi-entry__point,
.page-insights .pi-entry__effect {
  margin: 0 0 var(--space-1);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-insights .pi-entry__effect {
  color: var(--color-ink);
}

.page-insights .pi-entry__key {
  display: inline-block;
  margin-right: var(--space-1);
  padding: 1px var(--space-1);
  border-radius: var(--radius-sm);
  background: var(--color-highlight);
  color: var(--color-ink);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
}

.page-insights .pi-entry__more {
  margin-top: var(--space-2);
}

.page-insights .pi-entry__more > summary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) 0;
  font-size: var(--text-sm);
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
}

.page-insights .pi-entry__more > summary::-webkit-details-marker {
  display: none;
}

.page-insights .pi-entry__more > summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1;
}

.page-insights .pi-entry__more[open] > summary::before {
  content: "−";
}

.page-insights .pi-entry__more > summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-insights .pi-entry__more > p {
  margin: var(--space-2) 0 0;
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-primary-soft);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: 68ch;
}

/* ---------- 关键词与链接强调 ---------- */

.page-insights .pi-mark {
  font-style: normal;
  padding-bottom: 0.12em;
  border-bottom: 2px solid var(--color-primary);
  color: var(--color-ink);
}

.page-insights .link-underline {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-primary);
}

.page-insights .link-underline:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ---------- 收尾 ---------- */

.page-insights .pi-outro {
  padding: var(--section-y) 0;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: 1px solid var(--color-contrast-line);
}

.page-insights .pi-outro__inner {
  max-width: 62ch;
}

.page-insights .pi-outro__kicker {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-accent);
}

.page-insights .pi-outro__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-insights .pi-outro__text {
  margin: 0 0 var(--space-6);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 80%, transparent);
}

.page-insights .pi-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.page-insights .pi-outro .btn--ghost {
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-line);
  background: transparent;
}

.page-insights .pi-outro .btn--ghost:hover {
  color: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
}

/* ---------- 减弱动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-insights *,
  .page-insights *::before,
  .page-insights *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-insights .pi-band__scroller {
    scroll-behavior: auto;
  }
}

/* ---------- 断点 ---------- */

@media (max-width: 899px) {
  .page-insights .pi-hero__title {
    max-width: 100%;
  }

  .page-insights .pi-band::before,
  .page-insights .pi-band::after {
    width: var(--space-6);
    left: auto;
    right: auto;
  }

  .page-insights .pi-band::before {
    left: 0;
  }

  .page-insights .pi-band::after {
    right: 0;
  }

  .page-insights .pi-group__head {
    grid-template-columns: auto 1fr;
  }

  .page-insights .pi-group__note {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-insights .pi-hero {
    padding-top: var(--space-8);
  }

  .page-insights .pi-band__item {
    flex-basis: min(30%, 320px);
  }

  .page-insights .pi-group__head {
    grid-template-columns: auto auto 1fr;
    align-items: baseline;
  }

  .page-insights .pi-group__note {
    grid-column: 3 / -1;
    margin-top: calc(var(--space-1) * -1);
  }
}

@media (min-width: 1100px) {
  .page-insights .pi-hero__split {
    gap: var(--space-8);
  }
}
</main>