/* Blog listing (title + real excerpt + figure) and article math/plots. */

.blog-index {
  max-width: 760px;
  width: 100%;
  margin: 0 auto;
  padding: 48px clamp(20px, 4vw, 48px) 96px;
  flex: 1;
}

.blog-index-header { margin: 0 0 48px; }
.blog-index-header h1 {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0;
}

.blog-entry {
  display: grid;
  gap: 16px;
  padding: 40px 0;
  border-top: 0.5px solid var(--line);
}
.blog-entry h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  max-width: 22ch;
  text-wrap: balance;
}
.blog-entry h2 a { color: var(--fg); }
.blog-entry h2 a:hover, .blog-entry h2 a:focus-visible { color: var(--accent); }
.blog-entry__excerpt {
  margin: 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
  text-wrap: pretty;
}
.blog-entry__figure {
  margin: 8px 0 0;
}
.blog-entry__figure svg {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  margin: 0 auto;
  background: var(--bg);
  border: 0;
}
.blog-entry__more {
  justify-self: start;
  color: var(--accent);
  font: 500 12px/1.5 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 0.5px solid rgba(36, 82, 224, 0.3);
}
.blog-entry__more:hover { border-bottom-color: var(--accent); }
.blog-entry__more:focus-visible,
.blog-entry h2 a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(36, 82, 224, 0.35);
}

.blog-body .term { color: var(--accent); font-weight: 500; }
.blog-body .step-title {
  margin: 28px 0 12px;
  color: var(--accent);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.01em;
  scroll-margin-top: 88px;
}
.blog-article-section h2 { scroll-margin-top: 88px; }

.article.article .article-diagram {
  background: var(--bg);
  border: 0;
}
.blog-entry__figure .article-diagram,
.article-figure .article-diagram,
.article.article .article-figure img {
  background: var(--bg);
  border: 0;
}

.katex { font-size: 1.05em; }
.katex-display {
  margin: 18px 0;
  overflow-x: auto;
  overflow-y: hidden;
}

.article-diagram .plot-axis { stroke: var(--fg); stroke-width: 1.4; fill: none; }
.article-diagram .plot-curve {
  fill: none;
  stroke: #c0392b;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.article-diagram .plot-curve--soft { stroke: #d35400; }
.article-diagram .plot-curve--loss { stroke: #2471a3; stroke-width: 2.2; }
.article-diagram .plot-guide {
  fill: none;
  stroke: #2452E0;
  stroke-width: 1.6;
  stroke-dasharray: 7 5;
}
.article-diagram .plot-ghost {
  fill: none;
  stroke: #e8c4b8;
  stroke-width: 2;
  stroke-dasharray: 7 6;
}
.article-diagram .plot-title {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  fill: var(--fg);
}
.article-diagram .plot-eq {
  font-family: var(--font-sans);
  font-size: 16px;
  fill: var(--fg);
}
.article-diagram .plot-note {
  font-family: var(--font-sans);
  font-size: 14px;
  fill: var(--fg);
}
.svg-tex {
  display: inline-block;
  color: var(--fg);
  font-size: 13px;
  line-height: 1.15;
  white-space: nowrap;
}
.svg-tex .katex { font-size: 1em; }
.svg-tex--accent { color: var(--accent); }
.svg-tex--green { color: #1e7a4a; }
.svg-tex--orange { color: #d35400; }
.svg-tex--red { color: #c0392b; }
.svg-tex--purple { color: #7d3c98; }
.svg-tex--blue { color: #2452E0; }

.article-figure {
  overflow-x: auto;
}
.article-figure .article-diagram--compact {
  max-width: 400px;
  margin: 0 auto;
}
.article-figure .article-diagram {
  min-width: 280px;
}

@media (max-width: 640px) {
  .katex-display { font-size: 0.92em; }
  .article-diagram .plot-title { font-size: 12px; }
  .article-diagram .plot-eq { font-size: 13px; }
  .article-diagram .diag-lbl { font-size: 11px; }
}