/* ============================================================
   行业观察 / viewpoint —— 页面专属样式
   作用域：.page-insights
   ============================================================ */

.page-insights {
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

.page-insights .ins-crumb {
  padding-block: var(--space-2);
}

.page-insights .ins-crumb .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

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

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

.page-insights .ins-crumb .breadcrumb a:hover {
  color: var(--color-primary);
}

/* ---------- 首屏 ---------- */

.page-insights .ins-hero {
  position: relative;
  overflow: hidden;
}

.page-insights .ins-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-insights .ins-hero__backdrop img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  filter: saturate(0.5) contrast(1.1) brightness(0.7);
}

.page-insights .ins-hero__scrim {
  position: absolute;
  inset: 0;
  display: block;
  background-image: var(--overlay-scrim);
}

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

.page-insights .ins-hero .eyebrow {
  color: var(--color-primary-ink);
  opacity: 0.78;
}

.page-insights .ins-hero__title {
  margin: var(--space-3) 0 var(--space-4);
  max-width: 16ch;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary-ink);
}

.page-insights .ins-hero__lede {
  max-width: 46ch;
  margin: 0;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-primary-ink);
  opacity: 0.88;
}

/* ---------- 数字带 ---------- */

.page-insights .ins-figures {
  padding-block: var(--space-6);
}

.page-insights .ins-figures__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-3);
}

.page-insights .ins-figure {
  padding-inline-start: var(--space-2);
  border-inline-start: var(--border-thin) solid var(--color-line);
}

.page-insights .ins-figure .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary);
}

.page-insights .ins-figure .stat__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ---------- 议题方向 ---------- */

.page-insights .ins-topics__head {
  margin-bottom: var(--space-6);
}

.page-insights .ins-topics__media {
  margin: 0 0 var(--space-6);
}

.page-insights .ins-topics__media img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius-md);
  filter: brightness(0.82) contrast(1.06);
}

.page-insights .ins-topics__media .media__caption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-insights .ins-topic-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-insights .ins-topic {
  background-color: var(--color-surface);
}

.page-insights .ins-topic:nth-child(even) {
  background-color: var(--color-surface-deep);
}

.page-insights .ins-topic__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-1);
  padding: var(--space-3);
  color: inherit;
  text-decoration: none;
}

.page-insights .ins-topic__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-insights .ins-topic__text {
  display: block;
}

.page-insights .ins-topic__name {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-insights .ins-topic__desc {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-insights .ins-topic__count {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-insights .ins-topic__link:hover,
.page-insights .ins-topic__link:focus-visible {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-insights .ins-topic__link:hover .ins-topic__name,
.page-insights .ins-topic__link:focus-visible .ins-topic__name,
.page-insights .ins-topic__link:hover .ins-topic__desc,
.page-insights .ins-topic__link:focus-visible .ins-topic__desc,
.page-insights .ins-topic__link:hover .ins-topic__num,
.page-insights .ins-topic__link:focus-visible .ins-topic__num,
.page-insights .ins-topic__link:hover .ins-topic__count,
.page-insights .ins-topic__link:focus-visible .ins-topic__count {
  color: var(--color-primary-ink);
}

.page-insights .ins-topic__link:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 长文索引 ---------- */

.page-insights .ins-index__head {
  margin-bottom: var(--space-4);
}

.page-insights .ins-index__filters {
  margin-bottom: var(--space-4);
}

.page-insights .ins-index__list {
  display: block;
}

.page-insights .ins-row {
  background-color: var(--color-surface);
}

.page-insights .ins-row:nth-child(even) {
  background-color: var(--color-surface-deep);
}

.page-insights .ins-row__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num body"
    "meta meta";
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3);
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: start;
  cursor: pointer;
}

.page-insights .ins-row__head:hover {
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-insights .ins-row__head:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: -2px;
}

.page-insights .ins-row__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-insights .ins-row__body {
  grid-area: body;
  display: block;
}

.page-insights .ins-row__title {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-insights .ins-row__problem {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-insights .ins-row__meta {
  grid-area: meta;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.page-insights .ins-row__chapters,
.page-insights .ins-row__state {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-insights .ins-row__state {
  padding-inline-start: var(--space-2);
  border-inline-start: var(--border-thin) solid var(--color-line);
}

.page-insights .ins-row__head:hover .ins-row__title,
.page-insights .ins-row__head:hover .ins-row__problem,
.page-insights .ins-row__head:hover .ins-row__num,
.page-insights .ins-row__head:hover .ins-row__chapters,
.page-insights .ins-row__head:hover .ins-row__state {
  color: var(--color-accent-ink);
}

.page-insights .ins-row__head:hover .ins-row__state {
  border-inline-start-color: var(--color-accent-ink);
}

.js-on .page-insights .ins-row[data-open="false"] .fold__body {
  display: none;
}

.page-insights .ins-chapters {
  margin: 0;
  padding: 0 var(--space-3) var(--space-3);
  list-style: none;
  display: grid;
  gap: var(--space-1);
}

.page-insights .ins-chapters__item {
  display: grid;
  grid-template-columns: 1.5rem minmax(0, 1fr);
  gap: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-insights .ins-chapters__num {
  font-family: var(--font-mono);
  color: var(--color-ink-muted);
}

.page-insights .ins-index__figure {
  margin: 0;
  background-color: var(--color-surface-alt);
}

.page-insights .ins-index__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: cover;
  border-radius: var(--radius-md);
  filter: brightness(0.8) contrast(1.06);
}

.page-insights .ins-index__figure .media__caption {
  padding: var(--space-2) var(--space-3) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* ---------- 样张：长文内部 ---------- */

.page-insights .ins-sample__head {
  margin-bottom: var(--space-6);
}

.page-insights .ins-sample__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

.page-insights .ins-sample__toc-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-insights .ins-sample__toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-1);
}

.page-insights .ins-sample__toc a {
  display: block;
  padding: var(--space-1) var(--space-2);
  border-inline-start: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  text-decoration: none;
}

.page-insights .ins-sample__toc a:hover,
.page-insights .ins-sample__toc a:focus-visible {
  border-inline-start-color: var(--color-primary);
  color: var(--color-ink);
}

.page-insights .ins-sample__toc a:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

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

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

.page-insights .ins-sample__main .ins-sample__subhead + p {
  margin-top: 0;
}

.page-insights .ins-sample__main p {
  margin: 0 0 var(--space-3);
}

.page-insights .ins-callout {
  margin: 0 0 var(--space-4);
  padding: var(--space-3);
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
  border-radius: var(--radius-md);
}

.page-insights .ins-callout p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-insights .ins-sample__figure {
  margin: 0 0 var(--space-4);
}

.page-insights .ins-sample__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  filter: brightness(0.86) contrast(1.06);
}

.page-insights .ins-sample__figure .media__caption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-insights .ins-note {
  margin: 0 0 var(--space-3);
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-highlight);
  border-inline-start: var(--border-thick) solid var(--color-accent);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 行动出口 ---------- */

.page-insights .ins-exits__head {
  margin-bottom: var(--space-6);
}

.page-insights .ins-exits__head .section-title {
  color: var(--color-contrast-ink);
}

.page-insights .ins-exits__head .eyebrow {
  color: var(--color-contrast-accent);
}

.page-insights .ins-exits__lede {
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-insights .ins-exits__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

.page-insights .ins-exit {
  padding-top: var(--space-3);
  border-top: var(--border-thick) solid var(--color-contrast-line);
}

.page-insights .ins-exit__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-insights .ins-exit__text {
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-insights .ins-exit__contact {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-accent);
  word-break: break-all;
}

.page-insights .ins-exit__link {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  color: var(--color-contrast-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid currentColor;
}

.page-insights .ins-exit__link:hover,
.page-insights .ins-exit__link:focus-visible {
  color: var(--color-contrast-ink);
  border-bottom-color: var(--color-contrast-ink);
}

.page-insights .ins-exit__link:focus-visible {
  outline: var(--border-thick) solid var(--color-contrast-accent);
  outline-offset: 3px;
}

/* ---------- 中等屏 ---------- */

@media (min-width: 720px) {
  .page-insights .ins-figures__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-insights .ins-exits__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-insights .ins-topic__link {
    grid-template-columns: 4rem minmax(0, 1fr) auto;
    gap: var(--space-4);
    align-items: baseline;
    padding: var(--space-4) var(--space-3);
  }

  .page-insights .ins-row__head {
    grid-template-columns: 4rem minmax(0, 1fr) minmax(0, 16rem);
    grid-template-areas: "num .page-insights meta";
    gap: var(--space-3) var(--space-4);
    align-items: start;
    padding: var(--space-4) var(--space-3);
  }

  .page-insights .ins-row__meta {
    justify-content: flex-end;
    text-align: end;
  }

  .page-insights .ins-chapters {
    padding-inline-start: calc(4rem + var(--space-4));
  }

  .page-insights .ins-sample__layout {
    grid-template-columns: minmax(0, 15rem) minmax(0, 1fr) minmax(0, 14rem);
    gap: var(--space-6);
    align-items: start;
  }

  .page-insights .ins-sample__toc {
    position: sticky;
    top: var(--space-6);
  }

  .page-insights .ins-sample__notes {
    position: sticky;
    top: var(--space-6);
  }
}

@media (min-width: 1080px) {
  .page-insights .ins-exits__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-insights .ins-topic__link,
  .page-insights .ins-row__head {
    transition: none;
  }
}