.single-post {
  background: var(--isu-bg);
  color: var(--isu-ink);
  font-family: "Source Sans 3", ui-sans-serif, system-ui, sans-serif;
}

.single-post main {
  width: min(100% - 32px, 1120px);
  max-width: none;
  margin: 0 auto;
  padding: 56px 0 96px;
}

.single-post article > h1 {
  max-width: 900px;
  margin: 0 auto 28px;
  color: var(--isu-ink);
  font-family: "Sora", ui-sans-serif, sans-serif;
  font-size: clamp(2.35rem, 5vw, 4.25rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.06;
  text-wrap: balance;
}

.single-post article > div {
  max-width: 900px;
  margin: 0 auto;
}

.single-post .isu-eyebrow {
  margin: 0 0 14px;
  color: var(--isu-accent-dark);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.single-post p,
.single-post li {
  color: var(--isu-muted);
  font-size: 1.08rem;
  line-height: 1.72;
}

.single-post p {
  margin: 0 0 1.15rem;
}

.single-post .isu-lead {
  color: var(--isu-ink);
  font-size: clamp(1.18rem, 2vw, 1.4rem);
  line-height: 1.55;
}

.single-post h2,
.single-post h3 {
  color: var(--isu-ink);
  font-family: "Sora", ui-sans-serif, sans-serif;
  letter-spacing: -.028em;
  text-wrap: balance;
}

.single-post h2 {
  margin: 3.8rem 0 1rem;
  font-size: clamp(1.8rem, 3vw, 2.55rem);
  line-height: 1.15;
}

.single-post h3 {
  margin: 2.25rem 0 .7rem;
  font-size: clamp(1.3rem, 2.2vw, 1.65rem);
  line-height: 1.25;
}

.single-post a {
  color: var(--isu-accent-dark);
  font-weight: 600;
  text-decoration-thickness: .08em;
  text-underline-offset: .16em;
}

.single-post figure.wp-block-image {
  margin: 2.2rem 0;
}

.single-post figure.wp-block-image img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--isu-line);
  border-radius: 18px;
  box-shadow: 0 18px 52px rgba(7, 26, 47, .09);
}

.single-post figcaption {
  margin-top: .7rem;
  color: var(--isu-muted);
  font-size: .9rem;
  line-height: 1.45;
  text-align: center;
}

.single-post .isu-callout {
  margin: 2rem 0;
  padding: clamp(24px, 4vw, 36px);
  overflow: hidden;
  border: 1px solid var(--isu-line);
  border-radius: 20px;
  background: var(--isu-surface);
  box-shadow: 0 18px 48px rgba(7, 26, 47, .08);
}

.single-post .isu-callout h2,
.single-post .isu-callout h3 {
  margin-top: 0;
}

.single-post .isu-callout-dark {
  border-color: var(--isu-ink);
  background: var(--isu-ink);
}

.single-post .isu-callout-dark h2,
.single-post .isu-callout-dark h3,
.single-post .isu-callout-dark p,
.single-post .isu-callout-dark li {
  color: #FFFFFF;
}

.single-post .wp-block-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.single-post .wp-block-button__link {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--isu-accent);
  color: #FFFFFF;
  font-weight: 700;
  line-height: 1.2;
  padding: 13px 22px;
  text-decoration: none;
}

.single-post .wp-block-button__link:hover {
  background: var(--isu-accent-dark);
}

.single-post ul,
.single-post ol {
  margin: 1rem 0 1.5rem;
  padding-left: 1.45rem;
}

.single-post li {
  margin-bottom: .58rem;
  padding-left: .2rem;
}

.single-post .wp-block-table {
  margin: 1.75rem 0 2.5rem;
  overflow-x: auto;
  border: 1px solid var(--isu-line);
  border-radius: 16px;
  background: var(--isu-surface);
  box-shadow: 0 12px 34px rgba(7, 26, 47, .06);
}

.single-post .wp-block-table table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}

.single-post .wp-block-table th,
.single-post .wp-block-table td {
  border: 0;
  border-bottom: 1px solid var(--isu-line);
  padding: 15px 17px;
  text-align: left;
  vertical-align: top;
}

.single-post .wp-block-table th {
  background: #E8F2FD;
  color: var(--isu-ink);
  font-family: "Sora", ui-sans-serif, sans-serif;
  font-size: .94rem;
}

.single-post .wp-block-table td {
  color: var(--isu-muted);
}

.single-post .wp-block-separator {
  margin: 3.25rem 0;
  border: 0;
  border-top: 1px solid var(--isu-line);
}

.single-post .isu-related-links {
  padding: 24px 28px;
  border-left: 4px solid var(--isu-accent);
  border-radius: 0 16px 16px 0;
  background: #E8F2FD;
}

.single-post .isu-faq-answer {
  padding-bottom: 1.15rem;
  border-bottom: 1px solid var(--isu-line);
}

.single-post .isu-verified {
  margin-top: 3rem;
  color: var(--isu-muted);
  font-size: .92rem;
  font-style: italic;
}

@media (max-width: 640px) {
  .single-post main {
    width: min(100% - 24px, 1120px);
    padding-top: 36px;
  }

  .single-post article > h1 {
    font-size: clamp(2rem, 10vw, 2.7rem);
  }

  .single-post p,
  .single-post li {
    font-size: 1.02rem;
  }

  .single-post .isu-callout {
    padding: 22px;
    border-radius: 16px;
  }

  .single-post .wp-block-button,
  .single-post .wp-block-button__link {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .single-post * {
    scroll-behavior: auto;
  }
}


/* SEO and answer-engine additions */
.single-post .isu-breadcrumbs {
  margin-bottom: .75rem;
  color: var(--isu-muted);
  font-size: .92rem;
  line-height: 1.5;
}

.single-post .isu-breadcrumbs a {
  font-weight: 600;
}

.single-post .isu-breadcrumbs span {
  display: inline-block;
  margin: 0 .42rem;
  color: #7D91A5;
}

.single-post .isu-byline {
  margin: 0 0 1.5rem;
  color: var(--isu-muted);
  font-size: .96rem;
  line-height: 1.55;
}

.single-post .isu-byline span {
  display: inline-block;
  margin: 0 .4rem;
  color: #7D91A5;
}

.single-post .isu-summary {
  border-left: 5px solid var(--isu-accent);
  background: #E8F2FD;
}

.single-post .isu-summary ul {
  margin-bottom: 0;
}

.single-post .isu-toc {
  margin: 2rem 0;
  padding: 26px 30px;
  border: 1px solid var(--isu-line);
  border-radius: 18px;
  background: var(--isu-surface);
}

.single-post .isu-toc h2 {
  margin: 0 0 1rem;
  font-size: 1.45rem;
}

.single-post .isu-toc ul {
  columns: 2;
  column-gap: 36px;
  margin-bottom: 0;
}

.single-post .isu-toc li {
  break-inside: avoid;
  margin-bottom: .7rem;
}

.single-post .isu-author-box {
  margin: 3rem 0 1.25rem;
  padding: clamp(24px, 4vw, 34px);
  border: 1px solid var(--isu-line);
  border-radius: 18px;
  background: var(--isu-surface);
  box-shadow: 0 12px 34px rgba(7, 26, 47, .06);
}

.single-post .isu-author-box h2 {
  margin: 0 0 .8rem;
  font-size: 1.55rem;
}

.single-post .isu-author-box p:last-child {
  margin-bottom: 0;
}

.single-post h2[id],
.single-post h3[id] {
  scroll-margin-top: 28px;
}

@media (max-width: 640px) {
  .single-post .isu-byline span {
    margin: 0 .25rem;
  }

  .single-post .isu-toc {
    padding: 22px;
  }

  .single-post .isu-toc ul {
    columns: 1;
  }
}