.page-insights {
  --ins-glass: color-mix(in srgb, var(--color-surface) 86%, transparent);
  --ins-glass-deep: color-mix(in srgb, var(--color-surface-alt) 72%, transparent);
  --ins-edge: color-mix(in srgb, var(--color-primary) 24%, var(--color-line));
  --ins-hair: color-mix(in srgb, var(--color-line) 80%, transparent);
  --ins-accent: var(--color-accent);

  position: relative;
  overflow-x: clip;
  background:
    radial-gradient(92% 55% at 6% -8%, color-mix(in srgb, var(--color-primary-soft) 95%, transparent), transparent 66%),
    radial-gradient(70% 46% at 98% 16%, color-mix(in srgb, var(--color-highlight) 88%, transparent), transparent 68%),
    radial-gradient(80% 55% at 46% 112%, color-mix(in srgb, var(--color-primary-soft) 72%, transparent), transparent 70%),
    var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-insights .container {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */

.page-insights .ins-hero {
  position: relative;
  isolation: isolate;
  padding: var(--space-8) 0 var(--section-y);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  overflow: hidden;
}

.page-insights .ins-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(85% 70% at 84% 6%, color-mix(in srgb, var(--color-primary) 52%, transparent), transparent 62%),
    radial-gradient(60% 62% at 2% 98%, color-mix(in srgb, var(--color-accent) 38%, transparent), transparent 64%);
}

.page-insights .ins-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to right,
    color-mix(in srgb, var(--color-contrast-line) 62%, transparent) 0 1px,
    transparent 1px 88px
  );
  opacity: 0.55;
}

.page-insights .ins-hero__eyebrow {
  margin: 0 0 var(--space-6);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: color-mix(in srgb, var(--color-contrast-accent) 84%, var(--color-contrast-ink));
}

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

.page-insights .ins-hero__title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--color-contrast-ink);
}

.page-insights .ins-hero__title span {
  display: block;
}

.page-insights .ins-hero__title-shift {
  margin-left: 0.42em;
  color: var(--color-contrast-accent);
}

.page-insights .ins-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: var(--text-base);
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 86%, transparent);
}

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

.page-insights .ins-figures__item {
  position: relative;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-insights .ins-figures__item::before {
  content: "";
  position: absolute;
  top: calc(var(--border-thin) * -1);
  left: 0;
  width: calc(var(--space-4) * 1.4);
  height: calc(var(--border-thin) * 2);
  background: var(--color-contrast-accent);
}

.page-insights .ins-figures__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-variant-numeric: tabular-nums;
  line-height: 0.86;
  letter-spacing: -0.05em;
  color: var(--color-contrast-accent);
}

.page-insights .ins-figures__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

@media (min-width: 900px) {
  .page-insights .ins-hero {
    padding: var(--space-8) 0 var(--section-y-lg);
  }

  .page-insights .ins-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: var(--space-8);
  }
}

/* ---------- 章节标题 ---------- */

.page-insights .ins-topics {
  padding: var(--section-y) 0 var(--space-8);
}

.page-insights .ins-section-head {
  max-width: 62ch;
  margin-bottom: var(--space-8);
}

.page-insights .ins-section__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);
}

.page-insights .ins-section__note {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-insights .section-label__num {
  font-family: var(--font-mono);
  letter-spacing: 0.16em;
}

/* ---------- 专题侧栏 ---------- */

.page-insights .topic-shell {
  display: block;
}

.page-insights .topic-rail {
  margin-bottom: var(--space-6);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--ins-edge);
  border-radius: var(--radius-md);
  background: var(--ins-glass);
  backdrop-filter: blur(12px) saturate(115%);
}

.page-insights .topic-rail__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  color: var(--color-ink-muted);
}

.page-insights .topic-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
}

.page-insights .topic-rail__link {
  display: inline-block;
  padding-bottom: calc(var(--border-thin) * 2);
  border-bottom: calc(var(--border-thin) * 2) solid transparent;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

.page-insights .topic-rail__link:focus-visible {
  outline: calc(var(--border-thin) * 2) solid var(--color-focus);
  outline-offset: calc(var(--space-1) * 0.5);
}

/* ---------- 专题面板 ---------- */

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

.page-insights .topic {
  --ins-accent: var(--color-accent);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-3) var(--space-4);
  border: var(--border-thin) solid var(--ins-edge);
  border-radius: var(--radius-lg);
  background: var(--ins-glass);
  backdrop-filter: blur(16px) saturate(118%);
  box-shadow: var(--shadow-1);
}

.page-insights .topic::before {
  content: "";
  position: absolute;
  top: calc(var(--border-thin) * -1);
  left: var(--space-4);
  width: calc(var(--space-6) * 1.1);
  height: calc(var(--border-thin) * 3);
  background: var(--ins-accent);
  border-radius: var(--radius-sm);
}

.page-insights .topic:nth-child(3n + 1) {
  --ins-accent: var(--color-primary);
}

.page-insights .topic:nth-child(3n) {
  --ins-accent: color-mix(in srgb, var(--color-primary) 50%, var(--color-accent));
  background: var(--ins-glass-deep);
}

.page-insights .topic__head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-insights .topic__num {
  align-self: flex-start;
  padding: calc(var(--space-1) * 0.35) var(--space-2);
  border: var(--border-thin) solid color-mix(in srgb, var(--ins-accent) 40%, transparent);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--ins-accent);
}

.page-insights .topic__title {
  margin: 0;
  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);
}

.page-insights .topic__lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-ink);
}

/* 要点 */

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

.page-insights .point {
  padding-left: var(--space-3);
  border-left: calc(var(--border-thin) * 2) solid color-mix(in srgb, var(--ins-accent) 55%, transparent);
}

.page-insights .point__title {
  display: block;
  margin-bottom: calc(var(--space-1) * 0.5);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-insights .point__text {
  display: block;
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-insights .point:hover .stamp--bare,
.page-insights .point:focus-within .stamp--bare {
  opacity: 1;
}

/* 戳记 */

.page-insights .stamp {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: calc(var(--space-1) * 0.4);
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

.page-insights .stamp--bare {
  padding: 0;
  border: 0;
  background: none;
  opacity: 0.72;
  transition: opacity 0.22s ease;
}

.page-insights .stamp__key {
  color: var(--color-ink-muted);
}

.page-insights .stamp__value {
  color: var(--color-ink-soft);
  font-variant-numeric: tabular-nums;
}

.page-insights .stamp__sep {
  color: color-mix(in srgb, var(--color-line) 100%, transparent);
}

/* 相关条目 */

.page-insights .topic__records {
  list-style: none;
  margin: 0;
  padding: 0;
  border: var(--border-thin) solid var(--ins-hair);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-surface-alt) 52%, transparent);
  overflow: hidden;
}

.page-insights .record {
  padding: var(--space-2) var(--space-3);
}

.page-insights .record + .record {
  border-top: var(--border-thin) solid var(--ins-hair);
}

.page-insights .record__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--ins-accent);
  font-variant-numeric: tabular-nums;
}

.page-insights .record__title {
  display: block;
  margin-top: calc(var(--space-1) * 0.4);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-insights .record__meta {
  display: block;
  margin-top: calc(var(--space-1) * 0.4);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

/* 延伸入口 */

.page-insights .topic__more {
  align-self: flex-start;
  margin-top: auto;
  padding-bottom: calc(var(--space-1) * 0.5);
  border-bottom: calc(var(--border-thin) * 2) solid color-mix(in srgb, var(--color-accent) 40%, transparent);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-accent);
  text-decoration: none;
  transition: border-color 0.2s ease;
}

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

.page-insights .topic__more:focus-visible {
  outline: calc(var(--border-thin) * 2) solid var(--color-focus);
  outline-offset: var(--space-1);
}

/* 图窗 */

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

.page-insights .topic__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.page-insights .ins-caption__text {
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
}

@media (min-width: 860px) {
  .page-insights .topic-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6) var(--space-4);
  }

  .page-insights .topic {
    grid-column: span 7;
    padding: var(--space-6) var(--space-4) var(--space-4);
  }

  .page-insights .topic:nth-child(even) {
    grid-column: span 5;
    margin-top: var(--space-6);
  }

  .page-insights .topic__figure--aside {
    max-width: 88%;
  }
}

@media (min-width: 1080px) {
  .page-insights .topic-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 152px);
    gap: var(--space-8);
    align-items: start;
  }

  .page-insights .topic-rail {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: var(--space-8);
    margin-bottom: 0;
  }

  .page-insights .topic-rail__list {
    display: grid;
    gap: var(--space-2);
  }

  .page-insights .topic-grid {
    grid-column: 1;
    grid-row: 1;
  }
}

/* ---------- 深色横带（交叉 / 节奏） ---------- */

.page-insights .ins-band {
  padding: var(--space-8) 0;
}

.page-insights .ins-band--last {
  padding-bottom: var(--section-y-lg);
}

.page-insights .ins-band__panel {
  padding: var(--space-6) var(--space-4);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(90% 80% at 88% 0%, color-mix(in srgb, var(--color-primary) 42%, transparent), transparent 62%),
    var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  box-shadow: var(--shadow-2);
}

.page-insights .ins-band__panel .section-label__num,
.page-insights .ins-band__panel .section-label__text {
  color: var(--color-contrast-accent);
}

.page-insights .ins-band__title {
  margin: var(--space-2) 0 var(--space-3);
  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-contrast-ink);
}

.page-insights .ins-band__note {
  margin: 0 0 var(--space-6);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
}

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

.page-insights .cross-item {
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-insights .cross-item__path {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-2);
}

.page-insights .cross-item__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-accent);
  font-variant-numeric: tabular-nums;
}

.page-insights .cross-item__arrow {
  color: color-mix(in srgb, var(--color-contrast-accent) 62%, transparent);
}

.page-insights .cross-item__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-contrast-ink);
}

.page-insights .cross-item__text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.8;
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}

@media (min-width: 860px) {
  .page-insights .ins-band__panel {
    padding: var(--space-8) var(--space-6);
  }

  .page-insights .cross-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6) var(--space-6);
  }
}

/* ---------- 更新节奏 ---------- */

.page-insights .cadence-rail {
  display: grid;
  gap: var(--space-4);
  border-top: var(--border-thin) solid var(--ins-hair);
  padding-top: var(--space-4);
}

.page-insights .cadence-rail__item {
  padding-left: var(--space-3);
  border-left: calc(var(--border-thin) * 3) solid var(--color-primary);
}

.page-insights .cadence-rail__item:nth-child(2) {
  border-left-color: var(--color-accent);
}

.page-insights .cadence-rail__item:nth-child(3) {
  border-left-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-accent));
}

.page-insights .cadence-rail__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
}

.page-insights .cadence-rail__unit {
  margin: var(--space-1) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

.page-insights .cadence-rail__note {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

@media (min-width: 780px) {
  .page-insights .cadence-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-6);
  }
}

/* ---------- 延伸入口 ---------- */

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

.page-insights .exit-item__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: var(--space-3);
  row-gap: calc(var(--space-1) * 0.5);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--ins-edge);
  border-radius: var(--radius-md);
  background: var(--ins-glass);
  backdrop-filter: blur(12px) saturate(115%);
  color: var(--color-ink);
  text-decoration: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.24s ease;
}

.page-insights .exit-item__link:hover,
.page-insights .exit-item__link:focus-visible {
  border-color: color-mix(in srgb, var(--color-accent) 52%, transparent);
  box-shadow: var(--shadow-2);
  transform: translateY(calc(var(--space-1) * -0.5));
}

.page-insights .exit-item__link:focus-visible {
  outline: calc(var(--border-thin) * 2) solid var(--color-focus);
  outline-offset: var(--space-1);
}

.page-insights .exit-item__num {
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.page-insights .exit-item__title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-insights .exit-item__desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

@media (min-width: 780px) {
  .page-insights .exit-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-insights .exit-list .exit-item:first-child {
    grid-column: span 2;
  }
}