:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-alt: #fafafa;
  --text: #000000;
  --text-muted: #525252;
  --text-faint: #868686;
  --accent: #c2571a;
  --accent-fill: #e8892f;
  --accent-soft: #fbe4d3;
  --card: #fafafa;
  --border: #e5e5e5;
  --border-strong: #cfcfcf;
  --sans: 'Geist', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius: 2px;
  --max-width: 880px;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #000000;
  --bg-alt: #0f0f0f;
  --text: #ffffff;
  --text-muted: #a6a6a6;
  --text-faint: #7a7a7a;
  --accent-soft: #1f0e04;
  --card: #0f0f0f;
  --border: #262626;
  --border-strong: #3d3d3d;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.55;
  font-size: 15px;
  letter-spacing: 0.003em;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s ease, color 0.2s ease;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
}

/* Theme toggle */
#theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  border-right-width: 2px;
  border-bottom-width: 2px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}
#theme-toggle:hover { color: var(--accent); border-color: var(--border-strong); }
#theme-toggle svg { width: 18px; height: 18px; }
#icon-moon { display: none; }
[data-theme="dark"] #icon-sun { display: none; }
[data-theme="dark"] #icon-moon { display: block; }

/* Hero */
.hero {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

.hero-text {
  flex: 1 1 auto;
  min-width: 0;
}

.hero-text h1 {
  font-size: 42px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}

.blog-header {
  margin-bottom: 2.5rem;
}
.blog-header h1 {
  font-size: 42px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}
.blog-header h1 a {
  color: var(--text);
  text-decoration: none;
}
.blog-header h1 a:hover { color: var(--accent); }

.blog-link {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--accent);
  text-decoration: none;
  vertical-align: middle;
  margin-left: 0.5rem;
}
.blog-link:hover { text-decoration: underline; }

.tagline {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 13px;
}

.intro {
  font-size: 15px;
  line-height: 22px;
  max-width: 60ch;
  margin: 0 0 1.25rem;
}
.intro a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.intro a:hover { text-decoration: underline; }

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.9rem;
}

.hero-photo {
  flex: 0 0 auto;
}

.hero-photo img {
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
}

.links a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-right-width: 2px;
  border-bottom-width: 2px;
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
}
.links a:hover { color: var(--accent); border-color: var(--border-strong); }

/* Section nav */
.sections-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding: 0.75rem 0;
  margin-bottom: 2.5rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.sections-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
}
.sections-nav a:hover { color: var(--accent); }

/* Sections */
section { margin-bottom: 3rem; }

h1, h2, h3 { font-weight: 500; }

h2 {
  font-size: 24px;
  line-height: 32px;
  letter-spacing: -0.017em;
  margin: 0 0 0.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-strong);
  display: block;
}

p { margin: 0 0 1rem; }

/* Publications */
.pub {
  display: flex;
  gap: 1.25rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}
.pub:last-child { border-bottom: none; }

.pub-thumb {
  flex: 0 0 auto;
  width: 128px;
  height: 85px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pub-thumb.placeholder {
  background: var(--bg-alt);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.8rem;
}

.pub-thumb img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.pub-body h3 {
  margin: 0 0 0.35rem;
  font-size: 15px;
  line-height: 22px;
  letter-spacing: -0.003em;
}
.pub-authors, .pub-venue { margin: 0 0 0.3rem; font-size: 13px; line-height: 20px; }
.pub-authors strong { font-weight: 600; }
.pub-venue { color: var(--text-faint); font-family: var(--mono); font-size: 12px; }
.pub-abstract { font-size: 13px; line-height: 20px; color: var(--text-muted); margin-bottom: 0.5rem; }
.pub-links a { color: var(--accent); text-decoration: none; font-family: var(--mono); font-size: 12px; }
.pub-links a:hover { text-decoration: underline; text-underline-offset: 3px; }
.pub-links .pub-sep { color: var(--border-strong); font-weight: 400; font-size: 12px; margin: 0 0.2rem; }

/* Blog */
.post {
  display: flex;
  gap: 1.25rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}
.post:last-child { border-bottom: none; padding-bottom: 0; }
.post-date {
  margin: 0 0 0.3rem;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
}
.post h3 {
  margin: 0 0 0.3rem;
  font-size: 15px;
  line-height: 22px;
}
.post h3 a {
  color: var(--text);
  text-decoration: none;
}
.post h3 a:hover { color: var(--accent); }
.post-excerpt {
  margin: 0;
  font-size: 13px;
  line-height: 20px;
  color: var(--text-muted);
}

.post-card-authors {
  margin-top: 0.75rem;
  gap: 1rem;
}
.post-card-authors .post-meta-avatar {
  width: 26px;
  height: 26px;
}
.post-card-authors .post-meta-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}

.post-page {
  max-width: 700px;
  margin: 0 auto;
  counter-reset: figure;
}

.back-link {
  display: inline-block;
  margin-bottom: 1.5rem;
  color: var(--accent);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
}
.back-link:hover { text-decoration: underline; }

.post-eyebrow {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

.post-title {
  font-size: 42px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 1.25rem;
}

.post-meta {
  margin: 0 0 2rem;
}

.post-meta-authors {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
}

.post-meta-author {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: inherit;
  text-decoration: none;
}
.post-meta-author:hover .post-meta-name { color: var(--accent); }

.post-meta-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border);
  flex: 0 0 auto;
  display: block;
}

.post-meta-name {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
  text-underline-offset: 3px;
}

.post-page .post-date {
  margin: 0.75rem 0 0;
  font-size: 12px;
  color: var(--text-faint);
}
.post-readtime { margin-left: 0.6rem; }

.post-toc {
  margin: 0 0 2.5rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.post-toc-title {
  margin: 0 0 0.6rem;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-faint);
}

.post-toc ol {
  margin: 0;
  padding: 0 0 0 1.2rem;
  font-size: 15px;
  columns: 1;
}
.post-toc li::marker { font-family: var(--mono); font-size: 13px; color: var(--text-faint); }

.post-toc li { margin: 0.35rem 0; }

.post-toc a {
  color: var(--text);
  text-decoration: none;
}
.post-toc a:hover { color: var(--accent); text-decoration: underline; }

.post-page p:not(.post-byline):not(.post-date):not(.post-author-bio):not(.post-toc-title) {
  font-size: 16px;
  line-height: 1.65;
}

.post-page p:not(.post-author-bio) > a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.post-page p:not(.post-author-bio) > a:hover { text-decoration: underline; }

.post-page h2 {
  font-size: 24px;
  margin: 3rem 0 1rem;
}
.post-page h2.post-subheading { font-size: 18px; line-height: 26px; }

.post-page h3 {
  font-size: 16px;
  margin: 1.75rem 0 0.75rem;
}

.post-page blockquote {
  margin: 1.5rem 0;
  padding: 0.3rem 1.25rem;
  border-left: 2px solid var(--accent);
  color: var(--text-muted);
}
.post-page blockquote p:last-child { margin-bottom: 0; }

.post-page figure {
  margin: 2.5rem 0;
  counter-increment: figure;
}
.post-page .figure-card {
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #fafafa;
}
[data-theme="dark"] .post-page .figure-card {
  background: #f2f2f2;
  border-color: var(--border-strong);
}
.post-page figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
}
.post-page figcaption {
  margin-top: 0.75rem;
  font-size: 13px;
  line-height: 20px;
  color: var(--text-muted);
  text-align: left;
}
.post-page figcaption::before {
  content: "Figure " counter(figure) " ";
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  margin-right: 0.35rem;
}

/* Q-function edit animation */
.qfunc-svg {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
  border-radius: var(--radius);
}
.qfunc-svg text { font-family: var(--sans); }
.qfunc-legend-text { font-size: 15px; fill: #000; }
.qfunc-key-label { font-size: 12px; fill: #525252; font-family: var(--mono); }
.q-peak { fill: #c2571a; opacity: 0.5; }
.q-dot-legend { fill: #e8892f; stroke: #fafafa; stroke-width: 1.5; }
.q-base-mark { fill: #fafafa; stroke: #868686; stroke-width: 1.8; }
.q-arrow {
  stroke: #525252;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0;
  animation-duration: 7s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}
.q-arrowhead-path { fill: #525252; }
.q-dot {
  fill: #e8892f;
  stroke: #fafafa;
  stroke-width: 2;
  opacity: 0;
  filter: drop-shadow(0 0 5px rgba(194, 87, 26, 0.5));
  animation-duration: 7s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}

/* Each pair draws in on a slight cascade, but all four finish and hold
   together from ~36% to 80% before fading out and restarting in sync. */
.edit-pair-1 .q-arrow { animation-name: qArrowDraw1; }
.edit-pair-1 .q-dot { animation-name: qDotReveal1; }
.edit-pair-2 .q-arrow { animation-name: qArrowDraw2; }
.edit-pair-2 .q-dot { animation-name: qDotReveal2; }
.edit-pair-3 .q-arrow { animation-name: qArrowDraw3; }
.edit-pair-3 .q-dot { animation-name: qDotReveal3; }
.edit-pair-4 .q-arrow { animation-name: qArrowDraw4; }
.edit-pair-4 .q-dot { animation-name: qDotReveal4; }

@keyframes qArrowDraw1 {
  0% { opacity: 0; stroke-dashoffset: var(--len); }
  3% { opacity: 1; }
  14% { stroke-dashoffset: 0; opacity: 1; }
  80% { stroke-dashoffset: 0; opacity: 1; }
  92% { opacity: 0; }
  100% { opacity: 0; stroke-dashoffset: var(--len); }
}
@keyframes qArrowDraw2 {
  0%, 6% { opacity: 0; stroke-dashoffset: var(--len); }
  9% { opacity: 1; }
  20% { stroke-dashoffset: 0; opacity: 1; }
  80% { stroke-dashoffset: 0; opacity: 1; }
  92% { opacity: 0; }
  100% { opacity: 0; stroke-dashoffset: var(--len); }
}
@keyframes qArrowDraw3 {
  0%, 12% { opacity: 0; stroke-dashoffset: var(--len); }
  15% { opacity: 1; }
  26% { stroke-dashoffset: 0; opacity: 1; }
  80% { stroke-dashoffset: 0; opacity: 1; }
  92% { opacity: 0; }
  100% { opacity: 0; stroke-dashoffset: var(--len); }
}
@keyframes qArrowDraw4 {
  0%, 18% { opacity: 0; stroke-dashoffset: var(--len); }
  21% { opacity: 1; }
  32% { stroke-dashoffset: 0; opacity: 1; }
  80% { stroke-dashoffset: 0; opacity: 1; }
  92% { opacity: 0; }
  100% { opacity: 0; stroke-dashoffset: var(--len); }
}

@keyframes qDotReveal1 {
  0%, 14% { opacity: 0; r: 0; }
  18% { opacity: 1; r: 8; }
  22% { r: 6.5; }
  80% { opacity: 1; r: 6.5; }
  92%, 100% { opacity: 0; r: 0; }
}
@keyframes qDotReveal2 {
  0%, 20% { opacity: 0; r: 0; }
  24% { opacity: 1; r: 8; }
  28% { r: 6.5; }
  80% { opacity: 1; r: 6.5; }
  92%, 100% { opacity: 0; r: 0; }
}
@keyframes qDotReveal3 {
  0%, 26% { opacity: 0; r: 0; }
  30% { opacity: 1; r: 8; }
  34% { r: 6.5; }
  80% { opacity: 1; r: 6.5; }
  92%, 100% { opacity: 0; r: 0; }
}
@keyframes qDotReveal4 {
  0%, 32% { opacity: 0; r: 0; }
  36% { opacity: 1; r: 8; }
  40% { r: 6.5; }
  80% { opacity: 1; r: 6.5; }
  92%, 100% { opacity: 0; r: 0; }
}


@media (prefers-reduced-motion: reduce) {
  .q-arrow, .q-dot { animation: none; opacity: 1; stroke-dashoffset: 0; }
}

/* Bar chart animation (Figure 6) */
.bars-svg {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
  border-radius: var(--radius);
}
.bars-svg text { font-family: var(--sans); }
.bars-title { font-size: 14px; font-weight: 500; fill: #000; }
.bars-subtitle { font-size: 11px; font-family: var(--mono); fill: #868686; }
.bars-baseline { stroke: #e5e5e5; stroke-width: 1.5; }
.bars-cat-label text { font-size: 12px; font-family: var(--mono); fill: #525252; }
.bar-value {
  font-size: 13px;
  font-weight: 500;
  fill: #000;
  text-anchor: middle;
  opacity: 0;
  animation-duration: 7s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}
.bar-value-featured { font-size: 16px; font-weight: 600; fill: #c2571a; }
.bar-baseline { fill: #d4d4d4; }
.bar-featured { fill: #c2571a; }
.bar-peak {
  fill: #f0a061;
  filter: drop-shadow(0 0 4px rgba(194, 87, 26, 0.6));
  opacity: 0;
  animation-name: barPeakPulse;
  animation-duration: 7s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}
.bar-rect {
  transform-box: fill-box;
  transform-origin: bottom;
  animation-duration: 7s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}
.bar-1 .bar-rect { animation-name: barGrow1; }
.bar-1 .bar-value { animation-name: barLabel1; }
.bar-2 .bar-rect { animation-name: barGrow2; }
.bar-2 .bar-value { animation-name: barLabel2; }
.bar-3 .bar-rect { animation-name: barGrow3; }
.bar-3 .bar-value { animation-name: barLabel3; }
.bar-4 .bar-rect { animation-name: barGrow4; }
.bar-4 .bar-value { animation-name: barLabel4; }
.bar-5 .bar-rect { animation-name: barGrow5; }
.bar-5 .bar-value { animation-name: barLabel5; }

@keyframes barGrow1 {
  0% { transform: scaleY(0); }
  8% { transform: scaleY(1); }
  78% { transform: scaleY(1); }
  88%, 100% { transform: scaleY(0); }
}
@keyframes barGrow2 {
  0%, 6% { transform: scaleY(0); }
  14% { transform: scaleY(1); }
  78% { transform: scaleY(1); }
  88%, 100% { transform: scaleY(0); }
}
@keyframes barGrow3 {
  0%, 12% { transform: scaleY(0); }
  20% { transform: scaleY(1); }
  78% { transform: scaleY(1); }
  88%, 100% { transform: scaleY(0); }
}
@keyframes barGrow4 {
  0%, 18% { transform: scaleY(0); }
  26% { transform: scaleY(1); }
  78% { transform: scaleY(1); }
  88%, 100% { transform: scaleY(0); }
}
@keyframes barGrow5 {
  0%, 24% { transform: scaleY(0); }
  32% { transform: scaleY(1); }
  78% { transform: scaleY(1); }
  88%, 100% { transform: scaleY(0); }
}
@keyframes barLabel1 {
  0%, 8% { opacity: 0; }
  12% { opacity: 1; }
  78% { opacity: 1; }
  84%, 100% { opacity: 0; }
}
@keyframes barLabel2 {
  0%, 14% { opacity: 0; }
  18% { opacity: 1; }
  78% { opacity: 1; }
  84%, 100% { opacity: 0; }
}
@keyframes barLabel3 {
  0%, 20% { opacity: 0; }
  24% { opacity: 1; }
  78% { opacity: 1; }
  84%, 100% { opacity: 0; }
}
@keyframes barLabel4 {
  0%, 26% { opacity: 0; }
  30% { opacity: 1; }
  78% { opacity: 1; }
  84%, 100% { opacity: 0; }
}
@keyframes barLabel5 {
  0%, 32% { opacity: 0; }
  36% { opacity: 1; }
  78% { opacity: 1; }
  84%, 100% { opacity: 0; }
}
@keyframes barPeakPulse {
  0%, 32% { opacity: 0; r: 3; }
  36% { opacity: 1; r: 6; }
  40% { r: 5; }
  78% { opacity: 1; r: 5; }
  84%, 100% { opacity: 0; r: 3; }
}
@media (prefers-reduced-motion: reduce) {
  .bar-rect { animation: none; transform: scaleY(1); }
  .bar-value, .bar-peak { animation: none; opacity: 1; }
}

.post-page .table-wrap {
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.post-page table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  min-width: 420px;
}
.post-page th, .post-page td {
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.post-page thead th {
  font-family: var(--mono);
  font-weight: 400;
  color: var(--text-faint);
  font-size: 12px;
  background: var(--bg-alt);
}
.post-page td:last-child, .post-page th:last-child { text-align: right; }
.post-page tr:last-child td { border-bottom: none; }
.post-page tr.highlight td {
  color: var(--accent);
  font-weight: 500;
  background: var(--accent-soft);
}

.post-author-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin: 3.5rem 0 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.post-author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border);
  flex: 0 0 auto;
  display: block;
}
.post-author-name {
  margin: 0 0 0.25rem;
  font-size: 15px;
  font-weight: 500;
}
.post-author-bio {
  margin: 0;
  font-size: 13px;
  line-height: 20px;
  color: var(--text-muted);
}
.post-author-bio a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.post-author-bio a:hover { text-decoration: underline; }
.post-author-bio a + a { margin-left: 0.6rem; }

/* Reading progress bar */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent);
  z-index: 20;
}

/* Back to top */
#back-to-top {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  border-right-width: 2px;
  border-bottom-width: 2px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
#back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
#back-to-top:hover { color: var(--accent); border-color: var(--border-strong); }
#back-to-top svg { width: 18px; height: 18px; }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
}

/* Responsive */
@media (max-width: 640px) {
  .hero { flex-direction: column-reverse; align-items: flex-start; text-align: left; }
  .hero-photo img { width: 140px; height: 140px; }
  .pub { flex-direction: column; }
  .pub-thumb { width: 100%; height: 96px; }
  .post { flex-direction: column; }
  .post-toc ol { columns: 1; }
  .post-author-card { flex-direction: column; }
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 7px;
  margin: 1.5rem 0;
}
.post-page .video-card,
.video-card {
  position: relative;
  margin: 0;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
}
.video-card video {
  width: 100%;
  display: block;
  aspect-ratio: 15 / 9;
  object-fit: cover;
  object-position: left;
  background: #000;
  pointer-events: none;
}
.video-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 46%;
  z-index: 1;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0));
  pointer-events: none;
}
.video-card figcaption {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  color: #fff;
  text-align: left;
  pointer-events: none;
}
.video-card figcaption::before { content: none; }
@media (max-width: 620px) {
  .video-grid { grid-template-columns: 1fr; gap: 5px; }
}

/* Sidenotes */
.sidenote-wrap { position: relative; }

.post-page .sidenote-ref {
  all: unset;
  cursor: pointer;
  color: inherit;
  font: inherit;
  text-decoration: underline;
  text-decoration-color: var(--accent-fill);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  border-radius: var(--radius);
  padding: 0 1px;
  transition: background 0.2s ease, color 0.2s ease;
}
.post-page .sidenote-ref::after {
  content: "+";
  display: inline-block;
  margin-left: 2px;
  font-family: var(--mono);
  font-size: 0.7em;
  font-weight: 500;
  vertical-align: super;
  line-height: 0;
  color: var(--accent);
  transition: transform 0.25s ease;
}
.post-page .sidenote-ref:hover,
.post-page .sidenote-ref[aria-expanded="true"] {
  background: var(--accent-soft);
  color: var(--accent);
}
.post-page .sidenote-ref[aria-expanded="true"]::after { transform: rotate(45deg); }
.post-page .sidenote-ref:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.sidenote {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows 0.35s ease, opacity 0.3s ease, margin 0.35s ease;
}
.sidenote.open {
  grid-template-rows: 1fr;
  opacity: 1;
  margin-bottom: 1.25rem;
}
.sidenote-inner { overflow: hidden; }
.sidenote-body {
  padding: 0.9rem 1.1rem;
  border-left: 2px solid var(--accent);
  border-radius: 0;
  background: var(--card);
  color: var(--text-muted);
}
.sidenote-label {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
}
.post-page .sidenote-body p:not(.post-byline):not(.post-date):not(.post-author-bio) {
  margin: 0;
  font-size: 13px;
  line-height: 20px;
}
.post-page .sidenote-body p:not(.post-byline):not(.post-date):not(.post-author-bio) + p { margin-top: 0.7rem; }

@media (min-width: 1240px) {
  .sidenote {
    position: absolute;
    top: 0;
    left: calc(100% + 2rem);
    width: 230px;
    transform: translateX(-8px);
    transition: grid-template-rows 0.35s ease, opacity 0.3s ease, transform 0.35s ease;
  }
  .sidenote.open { transform: none; margin-bottom: 0; }
  .sidenote-body {
    border-left: none;
    border-top: 2px solid var(--accent);
    border-radius: 0;
  }
  .sidenote.sidenote--wide {
    position: static;
    width: auto;
    transform: none;
  }
  .sidenote.sidenote--wide.open { margin-bottom: 1.25rem; }
  .sidenote--wide .sidenote-body {
    border-top: none;
    border-left: 2px solid var(--accent);
  }
}

@media (prefers-reduced-motion: reduce) {
  .sidenote, .post-page .sidenote-ref::after { transition: none; }
}

/* Self-play figure */
.selfplay-panel {
  background: #fafafa;
  border: 1px solid #e5e5e5;
  border-radius: var(--radius);
  padding: 1.1rem 1.1rem 0.9rem;
  font-family: var(--sans);
}
.selfplay-head { display: flex; flex-direction: column; gap: 0.15rem; margin-bottom: 0.85rem; }
.selfplay-title { font-size: 14px; font-weight: 500; color: #000; }
.selfplay-subtitle { font-family: var(--mono); font-size: 11px; color: #868686; }
.selfplay-stage { position: relative; width: 100%; }
.selfplay-stage canvas { position: absolute; inset: 0; display: block; }
.selfplay-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 1.2rem;
  margin-top: 0.85rem;
  font-family: var(--mono);
  font-size: 12px;
  color: #868686;
}
.selfplay-stat b {
  color: #000;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.selfplay-stat:nth-child(3) b { color: #c2571a; }
.selfplay-legend { display: inline-flex; align-items: center; gap: 0.35rem; margin-left: auto; }
.selfplay-swatch { width: 9px; height: 9px; border-radius: 1px; display: inline-block; }
.selfplay-swatch-w { margin-left: 0.5rem; background: #d4d4d4; }
.selfplay-swatch-b { background: #e8892f; }
@media (max-width: 520px) {
  .selfplay-panel { padding: 0.8rem 0.7rem 0.7rem; }
  .selfplay-legend { margin-left: 0; }
}
.horizon-swatch-pos { background: #c2571a; }
.horizon-swatch-neg { margin-left: 0.5rem; background: #525252; }