/* Technical article and post-library presentation. */
.post-grid { align-items: stretch; }
.post-card { min-height: 0; display: block; padding: 26px; border-radius: 3px; }
.post-card__meta { display: flex; flex-wrap: wrap; gap: 6px 12px; margin: 0 0 12px; color: var(--ink-soft); font-size: 13px; }
.post-card h3 { margin: 0 0 12px; font-size: 1.45rem; line-height: 1.18; }
.post-card h3 a { color: var(--ink); font-size: inherit; font-weight: 700; }
.post-card > p:not(.post-card__meta) { margin: 0 0 18px; color: var(--ink-soft); font-size: 16px; }
.post-card__link { display: inline-block; }

/* Modern scientific article presentation in Brooks Photonics colors. */
body .article-hero {
  padding: 82px 0 62px;
  color: var(--ink);
  background: #fff;
  border-bottom: 1px solid var(--line);
}
body .article-hero .eyebrow {
  margin-bottom: 18px;
  color: var(--purple-dark);
  font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: .86rem;
  font-weight: 500;
  letter-spacing: .025em;
  text-transform: none;
}
body .article-hero h1 {
  max-width: 900px;
  margin: 0 0 25px;
  color: var(--ink);
  font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: clamp(2.45rem, 4.8vw, 4.15rem);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -.038em;
}
body .article-dek {
  max-width: 770px;
  margin-bottom: 25px;
  color: #5d5664;
  font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: clamp(1.08rem, 1.55vw, 1.24rem);
  font-weight: 300;
  line-height: 1.58;
}
body .article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  color: #7d7583;
  font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 13px;
  font-weight: 400;
}
body .article-layout {
  display: grid;
  grid-template-columns: minmax(0, 730px) minmax(190px, 230px);
  gap: 74px;
  align-items: start;
  max-width: 1100px;
}
body .article-body {
  padding: 72px 0 110px;
  font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
}
body .article-body p,
body .article-body li {
  color: #4f4953;
  font-size: 17.5px;
  font-weight: 300;
  line-height: 1.78;
}
body .article-body p { margin: 0 0 1.35em; }
body .article-body li + li { margin-top: .48em; }
body .article-body h2 {
  margin: 66px 0 20px;
  color: var(--ink);
  font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: clamp(1.65rem, 2.7vw, 2.18rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -.025em;
}
body .article-body h3 {
  margin: 42px 0 14px;
  color: var(--ink);
  font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 1.28rem;
  font-weight: 500;
  line-height: 1.3;
}
body .article-body code {
  padding: 0;
  color: var(--purple-dark);
  background: transparent;
  border-radius: 0;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: .92em;
}
body .definition-line {
  margin: 0 0 38px;
  padding: 2px 0 2px 19px;
  border: 0;
  border-left: 2px solid var(--purple);
  color: #403945;
  font-size: 1.08rem;
  line-height: 1.62;
}
body .math-display,
body .equation {
  margin: 34px 0 38px;
  padding: 0;
  overflow-x: auto;
  border: 0;
  background: transparent;
  color: #241e29;
  font-family: "STIX Two Math", "Cambria Math", "Times New Roman", serif;
  font-size: clamp(1.35rem, 2.8vw, 1.82rem);
  font-weight: 400;
  line-height: 1.45;
  text-align: center;
  white-space: nowrap;
}
body .math-display math {
  font-family: "STIX Two Math", "Cambria Math", "Times New Roman", serif;
  font-size: 1.08em;
}
body .note,
body .observation,
body .warning-note {
  margin: 32px 0;
  padding: 15px 18px 15px 21px;
  border: 0;
  border-left: 2px solid var(--purple);
  background: #faf8fc;
}
body .warning-note { border-left-color: var(--purple-dark); }
body .note p:last-child,
body .observation p:last-child,
body .warning-note p:last-child { margin-bottom: 0; }
body .warning-note h3 { margin: 0 0 8px; font-size: 1.13rem; }
body .example {
  margin: 36px 0 42px;
  padding: 24px 0;
  border: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
}
body .example ul { margin-top: 0; }
body .concept-figure,
body .plot-figure {
  margin: 48px 0 52px;
  padding: 0;
  border: 0;
  background: transparent;
}
body .concept-figure svg,
body .plot-figure svg { display: block; width: 100%; height: auto; }
body .figure-caption,
body .plot-caption,
body .instrument-card figcaption {
  margin: 13px 0 0;
  color: #756e79;
  font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 13.5px;
  font-weight: 300;
  line-height: 1.5;
}
body .instrument-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
  margin: 44px 0 58px;
}
body .instrument-grid-single {
  display: grid;
  grid-template-columns: minmax(0, 730px);
  margin: 38px 0 52px;
}
body .instrument-card { margin: 0; }
body .instrument-card img {
  display: block;
  width: 100%;
  height: auto;
  border: 0;
  background: transparent;
  object-fit: contain;
}
body .article-table-wrap { margin: 34px 0 44px; overflow-x: auto; }
body .article-table {
  width: 100%;
  min-width: 650px;
  border-collapse: collapse;
  background: transparent;
  font-variant-numeric: tabular-nums;
}
body .article-table th,
body .article-table td {
  padding: 12px 13px;
  border: 0;
  border-bottom: 1px solid #ded9e2;
  text-align: left;
  vertical-align: middle;
}
body .article-table th {
  color: #403945;
  background: transparent;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
}
body .article-table td { color: #5a535e; font-size: 14px; font-weight: 300; }
body .article-table th:last-child,
body .article-table td:last-child {
  background: #f5f1fa;
  border-left: 1px solid #d8cce3;
}
body .article-table th:last-child { color: var(--purple-dark); font-weight: 600; }
body .article-aside {
  position: sticky;
  top: 108px;
  margin-top: 76px;
  margin-bottom: 72px;
  padding: 2px 0 30px 21px;
  border: 0;
  border-left: 1px solid #d8d2dc;
  background: transparent;
  font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
}
body .article-aside h2 {
  margin: 0 0 13px;
  color: #5c5561;
  font-size: .92rem;
  font-weight: 500;
}
body .article-aside a {
  display: block;
  padding: 5px 0;
  color: #746b79;
  font-size: 13px;
  font-weight: 300;
  line-height: 1.35;
  text-decoration: none;
}
body .article-aside a:hover { color: var(--purple-dark); text-decoration: none; }
body .article-cta {
  margin-top: 72px;
  padding: 31px 32px 34px;
  color: var(--ink);
  background: #f7f4fa;
  border-top: 3px solid var(--purple);
}
body .article-cta h2,
body .article-cta p { color: var(--ink); }
body .article-cta h2 { margin-top: 0; }
body .article-references {
  margin-top: 66px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
body .article-references a { color: var(--purple-dark); }

@media (max-width: 900px) {
  body .article-layout { grid-template-columns: 1fr; gap: 0; }
  body .article-aside { position: static; order: -1; margin: 42px 0 52px; padding-bottom: 28px; }
  body .article-body { padding-top: 46px; }
  body .instrument-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .post-card { padding: 22px; }
  body .article-hero { padding: 58px 0 46px; }
  body .article-hero h1 { font-size: clamp(2.25rem, 12vw, 3.15rem); }
  body .article-body p,
  body .article-body li { font-size: 17px; line-height: 1.72; }
  body .math-display,
  body .equation { margin: 28px 0 32px; font-size: 1.28rem; }
  body .article-cta { padding: 26px 22px 29px; }
}