.page-insights {
  --insights-rail: 236px;
  --insights-dot: 15px;
  --insights-hair: 1px;
}

.page-insights [id] {
  scroll-margin-top: 96px;
}

/* ---------- 首屏 ---------- */
.page-insights .insights-hero {
  position: relative;
  padding-top: var(--section-y);
  padding-bottom: var(--space-6);
  overflow: hidden;
}

.page-insights .insights-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  left: -20%;
  width: 70%;
  height: 80%;
  background: radial-gradient(58% 58% at 30% 35%,
    color-mix(in srgb, var(--color-primary) 20%, transparent),
    transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.page-insights .insights-hero::after {
  content: "";
  position: absolute;
  right: -10%;
  top: 26%;
  width: 46%;
  height: 46%;
  background: radial-gradient(50% 50% at 60% 50%,
    color-mix(in srgb, var(--color-accent) 14%, transparent),
    transparent 70%);
  pointer-events: none;
  z-index: 0;
}

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

.page-insights .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-insights .breadcrumb-item {
  color: var(--color-ink-soft);
  text-decoration: none;
}

.page-insights .breadcrumb-item[aria-current="page"] {
  color: var(--color-primary);
}

.page-insights a.breadcrumb-item:hover {
  color: var(--color-accent);
}

.page-insights .breadcrumb-sep {
  color: var(--color-line);
}

.page-insights .eyebrow {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-insights .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: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-insights .hero-lede {
  max-width: var(--measure);
  margin: 0 0 var(--space-6);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-insights .hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin: 0;
  padding: var(--space-4) 0 0;
  border-top: var(--insights-hair) dashed var(--color-line);
}

.page-insights .hero-metric {
  position: relative;
  margin: 0;
  padding-left: var(--space-2);
}

.page-insights .hero-metric::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  bottom: 0.35em;
  width: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  box-shadow: var(--shadow-1);
}

.page-insights .hero-metric-live::before {
  background: var(--color-accent);
  box-shadow: var(--shadow-2);
}

.page-insights .hero-metric-value {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-ink);
}

.page-insights .hero-metric-live .hero-metric-value {
  color: var(--color-accent);
}

.page-insights .hero-metric-label {
  margin: var(--space-1) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-insights .hero-outline {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-1);
  margin-top: var(--space-6);
}

.page-insights .outline-item {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  padding: var(--space-1) 0;
  border-bottom: var(--insights-hair) dotted var(--color-line);
  text-decoration: none;
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-insights .outline-item:hover,
.page-insights .outline-item:focus-visible {
  color: var(--color-ink);
  border-bottom-color: var(--color-primary);
}

.page-insights .outline-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
}

.page-insights .hero-figure {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: var(--space-8) auto 0;
  padding: 0 var(--gutter);
}

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

.page-insights .hero-figure .figure-frame {
  border: var(--insights-hair) solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

.page-insights .figure-frame {
  border: var(--insights-hair) solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-alt);
}

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

.page-insights .figure-caption {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

/* ---------- 布局 ---------- */
.page-insights .insights-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  padding-bottom: var(--section-y-lg);
}

.page-insights .insights-body {
  min-width: 0;
}

/* ---------- 侧边目录 ---------- */
.page-insights .toc {
  border: var(--insights-hair) dashed var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  background: color-mix(in srgb, var(--color-surface-alt) 55%, transparent);
}

.page-insights .toc-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-insights .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-1);
  counter-reset: toc;
}

.page-insights .toc-link {
  display: block;
  padding: var(--space-1) 0 var(--space-1) var(--space-2);
  border-left: 2px solid transparent;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-insights .toc-link:hover,
.page-insights .toc-link:focus-visible {
  color: var(--color-ink);
  border-left-color: var(--color-accent);
}

.page-insights .toc-link.is-active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}

/* ---------- 章节 ---------- */
.page-insights .chapter {
  padding-top: var(--space-6);
}

.page-insights .chapter + .chapter {
  margin-top: var(--space-6);
  border-top: var(--insights-hair) dashed var(--color-line);
}

.page-insights .chapter-head {
  position: relative;
  margin-bottom: var(--space-4);
}

.page-insights .chapter-num {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
  text-shadow: 0 0 26px color-mix(in srgb, var(--color-primary) 42%, transparent);
}

.page-insights .chapter-kicker {
  margin: var(--space-1) 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

.page-insights .chapter-title {
  margin: var(--space-1) 0 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 .insights-body p {
  max-width: var(--measure);
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-insights .insights-body a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--insights-hair) solid color-mix(in srgb, var(--color-accent) 45%, transparent);
}

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

/* ---------- 时间轴 ---------- */
.page-insights .updates-track {
  list-style: none;
  position: relative;
  margin: var(--space-6) 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-insights .updates-track::before {
  content: "";
  position: absolute;
  left: calc(var(--insights-dot) / 2);
  top: var(--space-1);
  bottom: var(--space-1);
  width: 1px;
  background: repeating-linear-gradient(
    to bottom,
    var(--color-line) 0 5px,
    transparent 5px 11px
  );
}

.page-insights .update-item {
  position: relative;
  padding-left: var(--space-4);
}

.page-insights .update-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: var(--insights-dot);
  height: var(--insights-dot);
  border-radius: 50%;
  border: 2px solid var(--color-primary);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
}

.page-insights .update-when {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-accent);
  max-width: none;
}

.page-insights .update-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-insights .update-item p:last-child {
  margin-bottom: 0;
  color: var(--color-ink-soft);
}

/* ---------- 要点框 ---------- */
.page-insights .insight-note {
  max-width: var(--measure);
  margin: var(--space-4) 0;
  padding: var(--space-3);
  border-left: 2px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: color-mix(in srgb, var(--color-surface-alt) 70%, transparent);
}

.page-insights .insight-note-accent {
  border-left-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-highlight) 42%, var(--color-surface-alt));
}

.page-insights .insight-note-title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  max-width: none;
}

.page-insights .insight-note-accent .insight-note-title {
  color: var(--color-accent);
}

.page-insights .insight-note p:last-child {
  margin-bottom: 0;
  color: var(--color-ink-soft);
  max-width: none;
}

/* ---------- 小结 ---------- */
.page-insights .insight-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
  padding-top: var(--space-2);
  border-top: var(--insights-hair) dotted var(--color-line);
  font-size: var(--text-base);
  color: var(--color-ink-soft);
}

.page-insights .summary-tag {
  flex: none;
  padding: 2px var(--space-1);
  border: var(--insights-hair) solid var(--color-primary);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-primary);
  box-shadow: var(--shadow-1);
}

/* ---------- 章节内图片 ---------- */
.page-insights .figure-inline {
  max-width: var(--measure);
  margin: var(--space-6) 0;
}

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

/* ---------- 图文错位 ---------- */
.page-insights .split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

.page-insights .split-text p:last-child {
  margin-bottom: 0;
}

/* ---------- 四次改动 ---------- */
.page-insights .fix-list {
  list-style: none;
  counter-reset: fix;
  margin: var(--space-4) 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-insights .fix-item {
  position: relative;
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  border: var(--insights-hair) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface-alt) 62%, transparent);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.page-insights .fix-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: var(--space-3);
  bottom: var(--space-3);
  width: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  box-shadow: var(--shadow-1);
}

.page-insights .fix-item:hover {
  border-color: color-mix(in srgb, var(--color-primary) 55%, var(--color-line));
  background: color-mix(in srgb, var(--color-surface-deep) 55%, transparent);
}

.page-insights .fix-round {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-accent);
  max-width: none;
}

.page-insights .fix-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 .fix-problem {
  margin: 0 0 var(--space-1);
  color: var(--color-ink-muted);
  max-width: none;
}

.page-insights .fix-now {
  margin: 0;
  color: var(--color-ink);
  max-width: none;
}

/* ---------- 人群说明 ---------- */
.page-insights .audience-list {
  list-style: none;
  margin: var(--space-4) 0;
  padding: 0;
  display: grid;
  gap: var(--space-1);
}

.page-insights .audience-item {
  padding: var(--space-3) 0;
  border-bottom: var(--insights-hair) dotted var(--color-line);
}

.page-insights .audience-item:first-child {
  border-top: var(--insights-hair) dotted var(--color-line);
}

.page-insights .audience-tag {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-primary);
  max-width: none;
}

.page-insights .audience-do {
  margin: 0 0 var(--space-1);
  color: var(--color-ink);
  max-width: none;
}

.page-insights .audience-next {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  max-width: none;
}

/* ---------- 折叠块 ---------- */
.page-insights .fold-group {
  margin: var(--space-4) 0;
  display: grid;
  gap: var(--space-2);
}

.page-insights .fold {
  border: var(--insights-hair) dashed var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface-alt) 58%, transparent);
  overflow: hidden;
}

.page-insights .fold[open] {
  border-style: solid;
  border-color: color-mix(in srgb, var(--color-accent) 42%, var(--color-line));
}

.page-insights .fold-summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: 1.5;
  color: var(--color-ink);
}

.page-insights .fold-summary::-webkit-details-marker {
  display: none;
}

.page-insights .fold-summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-accent);
  transition: transform 0.2s ease;
}

.page-insights .fold[open] .fold-summary::after {
  content: "−";
}

.page-insights .fold-summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

.page-insights .fold-body {
  padding: 0 var(--space-3) var(--space-3);
}

.page-insights .fold-body p {
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
  max-width: none;
}

.page-insights .fold-body p:last-child {
  margin-bottom: 0;
}

/* ---------- 专题网格 ---------- */
.page-insights .topic-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

.page-insights .topic {
  padding: var(--space-3);
  border: var(--insights-hair) solid var(--color-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface-alt) 55%, transparent);
}

.page-insights .topic-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-insights .topic-count {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-accent);
  max-width: none;
}

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

.page-insights .article-item {
  padding-top: var(--space-2);
  border-top: var(--insights-hair) dotted var(--color-line);
}

.page-insights .article-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-insights .article-title {
  margin: 0 0 var(--space-1);
  font-size: var(--text-base);
  line-height: 1.55;
  color: var(--color-ink);
  max-width: none;
}

.page-insights .article-note {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-muted);
  max-width: none;
}

/* ---------- 行动出口 ---------- */
.page-insights .exit-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  margin: var(--space-4) 0;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-insights .exit-label {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-contrast-accent);
  max-width: none;
}

.page-insights .exit-text {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  max-width: none;
}

.page-insights .exit-text a {
  color: var(--color-contrast-accent);
  border-bottom: var(--insights-hair) solid currentColor;
}

.page-insights .exit-text a:hover,
.page-insights .exit-text a:focus-visible {
  color: var(--color-primary);
}

.page-insights .chapter-wrap .insight-summary {
  border-top-color: var(--color-contrast-line);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-insights .hero-outline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-insights .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .page-insights .hero-outline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-insights .split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .page-insights .insights-layout {
    grid-template-columns: var(--insights-rail) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-insights .toc {
    position: sticky;
    top: 96px;
    align-self: start;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }

  .page-insights .hero-outline {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }

  .page-insights .chapter-num {
    font-size: var(--text-3xl);
  }

  .page-insights .chapter-title {
    font-size: var(--text-2xl);
  }
}

@media (min-width: 1180px) {
  .page-insights .hero-title {
    max-width: 15ch;
  }
}

@media (max-width: 599px) {
  .page-insights .hero-br {
    display: none;
  }

  .page-insights .hero-metric-value {
    font-size: var(--text-2xl);
  }

  .page-insights .chapter-num {
    font-size: var(--text-xl);
  }

  .page-insights .chapter-title {
    font-size: var(--text-lg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-insights .outline-item,
  .page-insights .toc-link,
  .page-insights .fix-item,
  .page-insights .fold-summary::after {
    transition: none;
  }
}