:root {
  color-scheme: light;
  --bg: #fbfbfb;
  --surface: #ffffff;
  --text: #181a1f;
  --muted: #667085;
  --border: #d8dee4;
  --link: #0f6b78;
  --link-hover: #0a4d57;
  --accent: #b9471b;
  --accent-soft: #fff1ec;
  --viz-line: #252a31;
  --viz-muted: #9aa4b2;
  --focus: #f59e0b;
  --measure: 45rem;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 17px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  line-height: 1.62;
}

a {
  color: var(--link);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--link-hover);
}

img,
svg {
  max-width: 100%;
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}

pre {
  overflow-x: auto;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 0.75rem;
  transform: translateY(-150%);
  padding: 0.45rem 0.7rem;
  background: var(--surface);
  border: 2px solid var(--focus);
  color: var(--text);
  z-index: 20;
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-shell {
  width: min(100% - 2rem, var(--measure));
  margin: 0 auto;
}

.layout-scrollytelling .site-shell,
.layout-slider .site-shell,
.layout-cpp-will-win .site-shell {
  width: min(100% - 2rem, 68rem);
}

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem 0 1.2rem;
  border-bottom: 1px solid var(--border);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.site-title {
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.9rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--text);
}

.site-main {
  padding: 2.4rem 0 3rem;
}

.home-intro {
  margin-bottom: 2.7rem;
}

.home-intro h1,
.post-header h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.home-intro p {
  max-width: 38rem;
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.about-page h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.about-page-intro {
  max-width: 38rem;
  margin: 1rem 0 2.7rem;
  color: var(--muted);
  font-size: 1.08rem;
}

.about-section {
  margin: 0 0 2.7rem;
  padding: 1.1rem 0 1.35rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-section h2 {
  margin: 0 0 0.75rem;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--muted);
}

.about-content p {
  max-width: var(--measure);
  margin: 0;
}

.about-content p + p {
  margin-top: 0.8rem;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.9rem;
}

.about-content .social-links {
  margin-top: 1rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.35rem;
  height: 1.35rem;
  color: var(--muted);
  text-decoration: none;
}

.social-link:hover {
  color: var(--text);
}

.social-icon {
  width: 1.05rem;
  height: 1.05rem;
  flex: 0 0 auto;
  fill: currentColor;
}

.post-index h2 {
  margin: 0 0 1rem;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--muted);
}

.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-list-item {
  display: grid;
  grid-template-columns: 7.8rem minmax(0, 1fr);
  gap: 1.3rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--border);
}

.post-list-item time,
.post-header time {
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.88rem;
}

.post-list-item h3 {
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.3;
}

.post-list-item h3 a {
  color: var(--text);
  text-decoration: none;
}

.post-list-item h3 a:hover {
  color: var(--link);
}

.post-list-item p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.post {
  max-width: var(--measure);
}

.layout-scrollytelling .post {
  max-width: none;
}

.layout-cpp-will-win .post {
  max-width: none;
}

.post-header {
  margin-bottom: 2.3rem;
}

.post-header time {
  display: block;
  margin-top: 0.75rem;
}

.post-description {
  max-width: 38rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1.06rem;
}

.post-epigraph {
  max-width: 38rem;
  margin: 1.4rem 0 0;
  padding: 0 0 0 1rem;
  border-left: 3px solid var(--border);
  color: var(--muted);
  font-style: italic;
}

.post-epigraph p {
  margin: 0;
}

.post-epigraph cite {
  display: block;
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: 0.88rem;
  font-style: normal;
}

.post-content {
  font-size: 1.03rem;
}

.post-content h2,
.post-content h3 {
  margin: 2.2rem 0 0.7rem;
  line-height: 1.2;
}

.post-content p,
.post-content ul,
.post-content ol,
.post-content blockquote {
  max-width: var(--measure);
}

.post-content blockquote {
  margin-left: 0;
  padding-left: 1rem;
  border-left: 3px solid var(--border);
  color: var(--muted);
}

.cpp-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 21rem);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: end;
  margin-bottom: 1.6rem;
  padding: 1.4rem 0 2rem;
  border-bottom: 1px solid var(--border);
}

.cpp-hero-copy h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(3.2rem, 10vw, 7.4rem);
  line-height: 0.9;
  letter-spacing: 0;
}

.cpp-kicker,
.cpp-panel-label,
.cpp-meta,
.cpp-argument-map,
.cpp-content h2 {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.cpp-kicker,
.cpp-panel-label {
  margin: 0 0 0.7rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.cpp-deck {
  max-width: 37rem;
  margin: 1.2rem 0 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
  line-height: 1.45;
}

.cpp-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.cpp-meta span::before {
  content: "/";
  margin-right: 0.75rem;
  color: var(--border);
}

.cpp-hero-panel {
  margin: 0;
  padding: 1rem 0 0 1.1rem;
  border-left: 3px solid var(--accent);
}

.cpp-hero-panel p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.5;
}

.cpp-argument-map {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0 0 2.4rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cpp-argument-map div {
  min-height: 7rem;
  padding: 0.9rem;
  border-right: 1px solid var(--border);
}

.cpp-argument-map div:last-child {
  border-right: 0;
}

.cpp-argument-map span {
  display: block;
  margin-bottom: 1.7rem;
  color: var(--muted);
  font-size: 0.76rem;
  font-variant-numeric: tabular-nums;
}

.cpp-argument-map strong {
  display: block;
  max-width: 9rem;
  font-size: 0.98rem;
  line-height: 1.2;
}

.cpp-content {
  display: grid;
  grid-template-columns: minmax(9rem, 14rem) minmax(0, var(--measure));
  gap: clamp(1.4rem, 4vw, 3.2rem);
  align-items: start;
}

.cpp-content h2 {
  grid-column: 1;
  position: sticky;
  top: 1rem;
  margin: 0;
  padding-top: 0.2rem;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.25;
  text-transform: uppercase;
}

.cpp-content h2,
.cpp-content h2 + p,
.cpp-content blockquote {
  margin-top: 1.7rem;
}

.cpp-content > :first-child,
.cpp-content > :first-child + p {
  margin-top: 0;
}

.cpp-content p,
.cpp-content blockquote {
  grid-column: 2;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.86rem;
}

.scrolly-header {
  text-align: left;
}

.scrolly-content > p:first-child {
  max-width: var(--measure);
}

.scrolly-section {
  min-height: var(--scrolly-height);
  margin: 3rem 0;
}

.scrolly-section-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(19rem, 28rem);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.scrolly-copy {
  max-width: var(--measure);
  padding-top: 8vh;
  padding-bottom: 14vh;
}

.scrolly-copy > :first-child {
  margin-top: 0;
}

.scrolly-stage {
  position: sticky;
  top: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: calc(100vh - 2rem);
  margin: 0;
}

.scrolly-canvas {
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.96)),
    radial-gradient(circle at 24% 18%, rgba(15,107,120,0.12), transparent 28%),
    radial-gradient(circle at 78% 74%, rgba(185,71,27,0.12), transparent 30%);
  overflow: hidden;
}

.scrolly-canvas svg {
  display: block;
  width: 100%;
  height: 100%;
}

.scrolly-stage figcaption {
  min-height: 2.6em;
  margin-top: 0.75rem;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.82rem;
  line-height: 1.35;
  text-align: center;
}

.scrolly-node rect {
  fill: var(--surface);
  stroke: var(--viz-line);
  stroke-width: 2;
}

.scrolly-node text {
  fill: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 18px;
  font-weight: 650;
}

.scrolly-draw-path {
  fill: none;
  stroke: var(--viz-line);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.scrolly-accent {
  stroke: var(--accent);
}

.scrolly-muted {
  stroke: var(--viz-muted);
}

.scrolly-label {
  fill: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
}

.slider-header {
  text-align: left;
}

.slider-content > p:first-child {
  max-width: var(--measure);
}

.slider-section {
  margin: 3rem 0;
}

.slider-section-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(19rem, 28rem);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.slider-copy {
  max-width: var(--measure);
}

.slider-copy > :first-child {
  margin-top: 0;
}

.slider-stage {
  display: flex;
  flex-direction: column;
  margin: 0;
}

.slider-canvas {
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.94), rgba(255,255,255,0.98)),
    radial-gradient(circle at 20% 20%, rgba(15,107,120,0.1), transparent 28%),
    radial-gradient(circle at 80% 76%, rgba(185,71,27,0.1), transparent 30%);
  overflow: hidden;
}

.slider-canvas svg {
  display: block;
  width: 100%;
  height: 100%;
}

.slider-stage figcaption {
  min-height: 2.6em;
  margin-top: 0.75rem;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.82rem;
  line-height: 1.35;
  text-align: center;
}

.slider-control {
  display: grid;
  grid-template-columns: auto auto;
  gap: 0.5rem 0.75rem;
  align-items: center;
  margin-top: 0.8rem;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.84rem;
}

.slider-control output {
  justify-self: end;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.slider-control input {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--link);
}

.slider-axis,
.slider-guide,
.slider-draw-path,
.slider-threshold {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.slider-axis {
  stroke: var(--viz-muted);
  stroke-width: 2;
}

.slider-guide {
  stroke: var(--viz-muted);
  stroke-width: 3;
  opacity: 0.42;
}

.slider-draw-path {
  stroke: var(--viz-line);
  stroke-width: 5;
}

.slider-threshold {
  stroke: var(--accent);
  stroke-width: 4;
}

.slider-dot {
  fill: var(--accent);
}

.slider-label {
  fill: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
}

.slider-bar {
  fill: var(--viz-muted);
  opacity: 0.45;
}

.slider-bar-selected {
  fill: var(--accent);
  opacity: 0.9;
}

@media (max-width: 760px) {
  html {
    font-size: 16px;
  }

  .site-shell,
  .layout-scrollytelling .site-shell,
  .layout-slider .site-shell,
  .layout-cpp-will-win .site-shell {
    width: min(100% - 1.25rem, var(--measure));
  }

  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .post-list-item {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .scrolly-section {
    min-height: auto;
    margin: 2.2rem 0;
  }

  .scrolly-section-inner {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
  }

  .scrolly-copy {
    padding: 0;
  }

  .scrolly-stage {
    position: static;
    order: -1;
    min-height: auto;
  }

  .slider-section {
    margin: 2.2rem 0;
  }

  .slider-section-inner {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
  }

  .cpp-hero {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 1.4rem;
    padding-top: 0.5rem;
  }

  .cpp-hero-copy h1 {
    font-size: clamp(3.2rem, 20vw, 4.6rem);
  }

  .cpp-meta span::before {
    content: "";
    margin-right: 0;
  }

  .cpp-argument-map {
    grid-template-columns: 1fr 1fr;
  }

  .cpp-argument-map div {
    min-height: 6rem;
  }

  .cpp-argument-map div:nth-child(2n) {
    border-right: 0;
  }

  .cpp-argument-map div:nth-child(n + 3) {
    border-top: 1px solid var(--border);
  }

  .cpp-content {
    display: block;
  }

  .cpp-content h2 {
    position: static;
    margin-top: 2rem;
  }

  .cpp-content h2 + p,
  .cpp-content blockquote {
    margin-top: 0.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}