/*
 * SUPERIOR INSIGHTS 基幹10記事体制 / delivery 1.4.0
 * Shared delivery safeguards loaded by every INSIGHTS page.
 */

html {
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  overflow-wrap: break-word;
}

.article-card__image img {
  background-color: #dfeaf3;
}

.category-card__icon img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

@media print {
  @page {
    margin: 16mm;
    size: A4;
  }

  html {
    scroll-behavior: auto;
  }

  body {
    overflow: visible;
  }

  img,
  figure,
  .article-summary,
  .learning,
  .process {
    break-inside: avoid;
  }

  h1,
  h2,
  h3 {
    break-after: avoid;
  }
}

/*
 * Reading-first layout refinements
 * Keep the established visual language while shortening the path to the text.
 */

/* INSIGHTS index: compact brand hero */
.insights-hero {
  min-height: 360px;
}

.insights-hero__inner {
  padding-top: 30px;
  padding-bottom: 32px;
}

.insights-hero__label {
  margin-bottom: 12px;
}

.insights-hero h1 {
  font-size: clamp(42px, 5vw, 60px);
  line-height: 1.16;
}

.insights-hero__lead {
  margin-top: 18px;
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.7;
}

.insights-hero__principles {
  margin-top: 20px;
}

/* Article header: category, date, reading time, title, lead and learning points */
.article-hero__inner {
  padding-top: 44px;
  padding-bottom: 38px;
}

.article-hero__meta {
  gap: 8px 16px;
  margin-bottom: 14px;
}

.article-hero h1 {
  max-width: 1000px;
  font-size: clamp(38px, 4.4vw, 56px);
  line-height: 1.24;
}

.article-hero__lead {
  max-width: 920px;
  margin-top: 18px;
  font-size: 18px;
  line-height: 1.72;
}

.article-hero__lead > p {
  margin: 0;
}

.article-hero__context {
  margin-top: 10px;
  color: rgba(255, 255, 255, .7);
  font-size: 15px;
}

.article-hero__context summary {
  width: fit-content;
  padding: 4px 0;
  color: var(--gold-300);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.article-hero__context p {
  max-width: 860px;
  margin: 10px 0 0;
  line-height: 1.75;
}

.article-hero__context a {
  color: var(--gold-300);
}

.article-hero__learning {
  max-width: 1000px;
  margin: 24px 0 0;
  padding: 20px 24px;
  background: rgba(255, 255, 255, .055);
  border-color: rgba(224, 198, 128, .26);
  border-radius: var(--radius-sm);
}

.article-hero__learning h2 {
  margin-bottom: 12px;
  color: var(--white);
  font-size: 17px;
}

.article-hero__learning ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 30px;
}

.article-hero__learning li {
  margin: 0;
  color: rgba(255, 255, 255, .8);
  font-size: 15px;
  line-height: 1.65;
}

/* One compact, collapsible TOC before the supporting image */
.article-intro-toc {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.article-intro-toc details {
  max-width: 1000px;
  margin: 0 auto;
}

.article-intro-toc summary {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--navy-900);
  font-size: 15px;
  font-weight: 750;
  letter-spacing: .08em;
  cursor: pointer;
}

.article-intro-toc summary::after {
  color: var(--gold-650);
  content: "+";
  font-size: 21px;
}

.article-intro-toc details[open] summary::after {
  content: "−";
}

.article-intro-toc ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 32px;
  margin: 0;
  padding: 0 0 22px 1.4em;
}

.article-intro-toc li {
  padding: 5px 0;
  color: var(--gold-650);
}

.article-intro-toc a {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.6;
  text-decoration: none;
}

.article-intro-toc a:hover {
  color: var(--navy-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-layout {
  grid-template-columns: minmax(0, 800px);
  gap: 0;
  padding-top: 42px;
}

.article-body .article-section h2 {
  font-size: clamp(27px, 2.8vw, 35px);
}

/* Start Here cards: titles lead, images support. Scoped to the first four only. */
.section--first {
  padding-top: 88px;
  padding-bottom: 88px;
}

.first-grid {
  gap: 20px;
}

.first-grid .article-card__image {
  height: 130px;
  aspect-ratio: auto;
}

.first-grid .article-card__image img {
  width: 100%;
  height: 130px;
  object-fit: cover;
}

.first-grid .article-card__body {
  padding: 22px 24px 20px;
}

.first-grid .article-card__meta {
  margin-bottom: 12px;
}

.first-grid .article-card h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.48;
}

.first-grid .article-card p {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.first-grid .article-card__foot {
  margin-top: 16px;
  padding-top: 14px;
}

@media (max-width: 680px) {
  .insights-hero {
    min-height: 350px;
  }

  .insights-hero__inner {
    padding-top: 22px;
    padding-bottom: 24px;
  }

  .insights-hero h1 {
    font-size: 42px;
    line-height: 1.14;
  }

  .insights-hero__lead {
    margin-top: 14px;
    font-size: 16px;
    line-height: 1.65;
  }

  .insights-hero__principles {
    display: none;
  }

  .article-hero__inner {
    padding-top: 30px;
    padding-bottom: 26px;
  }

  .article-hero__meta {
    margin-bottom: 12px;
    font-size: 13px;
  }

  .article-hero h1 {
    font-size: clamp(31px, 9vw, 38px);
    line-height: 1.3;
  }

  .article-hero__lead {
    margin-top: 14px;
    font-size: 16px;
    line-height: 1.7;
  }

  .article-hero__learning {
    margin-top: 18px;
    padding: 17px 18px;
  }

  .article-hero__learning h2 {
    margin-bottom: 9px;
    font-size: 16px;
  }

  .article-hero__learning ul {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .article-hero__learning li {
    font-size: 14px;
    line-height: 1.55;
  }

  .article-intro-toc summary {
    min-height: 52px;
  }

  .article-intro-toc ol {
    grid-template-columns: 1fr;
    gap: 0;
    padding-bottom: 16px;
  }

  .article-layout {
    padding-top: 32px;
  }

  .article-body .article-section h2 {
    font-size: 27px;
  }

  .section--first {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .first-grid {
    gap: 16px;
  }

  .first-grid .article-card__image {
    height: 120px;
  }

  .first-grid .article-card__image img {
    height: 120px;
  }

  .first-grid .article-card__body {
    padding: 20px;
  }

  .first-grid .article-card h3 {
    font-size: 21px;
  }

  .first-grid .article-card__foot {
    margin-top: 14px;
    padding-top: 12px;
  }
}

@media print {
  .article-intro-toc,
  .article-hero__context {
    display: none !important;
  }

  .article-hero__learning {
    color: #000;
    background: #fff;
    border: 1px solid #777;
  }

  .article-hero__learning h2,
  .article-hero__learning li {
    color: #000;
  }
}