@font-face {
  font-family: Space Grotesk;
  src: url("assets/fonts/space-grotesk.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: Instrument Serif;
  src: url("assets/fonts/instrument-serif.woff2") format("woff2");
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: IBM Plex Mono;
  src: url("assets/fonts/ibm-plex-mono.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
:root {
  --bg-primary: #f7f7f2;
  --bg-secondary: #fffefa;
  --bg-tertiary: #eeeee7;
  --text-primary: #232c28;
  --text-secondary: #626b64;
  --text-tertiary: #606a5b;
  --accent: #207565;
  --accent-hover: #175b4e;
  --accent-soft: #e6eee5;
  --border: #dddfd5;
  --shadow: rgba(36, 44, 39, 0.06);
  --code-bg: #eeeee7;
  --error: #b45236;
  --success: #207565;
  --orange: #c05d36;
  --sidebar: 238px;
  --font-mono: "IBM Plex Mono", monospace;
  color-scheme: light;
}
[data-theme="dark"] {
  --bg-primary: #181e1b;
  --bg-secondary: #202723;
  --bg-tertiary: #2a332d;
  --text-primary: #f0f0e5;
  --text-secondary: #b6bfb3;
  --text-tertiary: #a1aea0;
  --accent: #8bc7aa;
  --accent-hover: #a8dcbc;
  --accent-soft: #2b3e32;
  --border: #384139;
  --shadow: rgba(0, 0, 0, 0.13);
  --code-bg: #2a332d;
  --error: #efad8f;
  --success: #8bc7aa;
  --orange: #efad8f;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  font-family: "Space Grotesk", sans-serif;
  font-size: 14px;
  line-height: 1.7;
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}
button,
input,
select {
  font: inherit;
}
button,
a,
input,
[tabindex] {
  -webkit-tap-highlight-color: transparent;
}
button,
a {
  touch-action: manipulation;
}
button {
  cursor: pointer;
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}
a {
  color: var(--accent);
  text-underline-offset: 4px;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}
button {
  border: 1px solid transparent;
  background: var(--accent);
  color: var(--bg-secondary);
  padding: 11px 19px;
  border-radius: 7px;
  transition:
    background 0.2s,
    transform 0.2s;
}
button:hover {
  background: var(--accent-hover);
}
button:active {
  transform: translateY(1px);
}
.button-secondary {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--border);
}
.button-secondary:hover {
  background: var(--bg-tertiary);
}
.skip-link {
  position: fixed;
  top: -70px;
  left: 20px;
  z-index: 300;
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 12px;
}
.skip-link:focus {
  top: 10px;
}
.sidebar {
  width: var(--sidebar);
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 110;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 30px 20px 20px;
  overflow-y: auto;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.7px;
  line-height: 1.1;
  padding: 0 8px;
}
.brand-mark {
  display: grid;
  grid-template-columns: repeat(3, 6px);
  gap: 3px;
  transform: rotate(-8deg);
  width: 27px;
}
.brand-mark i {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 1px;
}
.brand-mark i:nth-child(3n) {
  opacity: 0.35;
}
.brand-mark i:last-child {
  background: var(--orange);
  opacity: 1;
}
.brand-subtitle {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1.5px;
  font-weight: 400;
  display: block;
  color: var(--text-tertiary);
  margin-top: 8px;
}
.nav-menu {
  margin-top: 37px;
}
.nav-group-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1.7px;
  color: var(--text-tertiary);
  margin: 26px 13px 10px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  width: 100%;
  padding: 10px 12px;
  margin: 3px 0;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  text-align: left;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: 6px;
}
.nav-item svg {
  width: 16px;
  height: 16px;
  stroke-width: 1.5;
  flex-shrink: 0;
}
.nav-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}
.nav-item.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--border);
  font-weight: 600;
}
.nav-item.active:after {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: auto;
}
.nav-extra {
  font-family: var(--font-mono);
  font-size: 9px;
  margin-left: auto;
  color: var(--text-tertiary);
}
.sidebar-bottom {
  margin-top: auto;
  padding-top: 28px;
}
.sidebar-note {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 15px 13px;
  background: var(--bg-primary);
}
.sidebar-note strong {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  font-weight: 500;
}
.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.sidebar-note p {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 7px;
  line-height: 1.6;
}
.sidebar-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 3px 0;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-tertiary);
}
.sidebar-footer a {
  color: inherit;
  text-decoration: none;
}
.topbar {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 42px;
  margin-left: var(--sidebar);
  border-bottom: 1px solid var(--border);
  gap: 15px;
}
.breadcrumb {
  display: flex;
  gap: 13px;
  align-items: center;
  font-size: 11px;
  color: var(--text-tertiary);
}
.breadcrumb strong {
  font-weight: 500;
  color: var(--text-primary);
}
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 22px;
}
.version-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-tertiary);
  letter-spacing: 0.7px;
}
.theme-toggle,
.menu-toggle {
  background: transparent;
  color: var(--text-primary);
  padding: 7px;
  border: 1px solid var(--border);
  height: 34px;
  width: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
}
.theme-toggle:hover,
.menu-toggle:hover {
  background: var(--bg-tertiary);
}
.theme-toggle svg {
  width: 16px;
  height: 16px;
}
.menu-toggle {
  display: none;
}
.container {
  margin-left: var(--sidebar);
  padding: 36px 42px 28px;
  max-width: 1600px;
}
.page {
  display: none;
}
.page.active {
  display: block;
  animation: page-in 0.35s ease-out;
}
@keyframes page-in {
  from {
    opacity: 0;
    transform: translateY(7px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.page-header {
  margin-bottom: 30px;
  padding: 10px 0 30px;
  border-bottom: 1px solid var(--border);
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.page-title {
  font-size: clamp(32px, 3.6vw, 50px);
  letter-spacing: -2px;
  line-height: 1.12;
  font-weight: 500;
  max-width: 800px;
  margin-bottom: 14px;
}
.page-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 650px;
  line-height: 1.8;
}
.page-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.3px;
  color: var(--text-tertiary);
  margin-bottom: 17px;
}
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 27px;
  margin-bottom: 24px;
  min-width: 0;
}
.card-title {
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.6px;
  margin-bottom: 12px;
}
.card p {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.9;
}
.card p + p {
  margin-top: 10px;
}
.card strong {
  color: var(--text-primary);
  font-weight: 500;
}
.card h3 {
  font-size: 15px;
  line-height: 1.5;
}
.card li {
  font-size: 13px;
  color: var(--text-secondary);
}
.grid-2,
.grid-3 {
  display: grid;
  gap: 22px;
}
.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid-2 > .card,
.grid-3 > .card {
  margin-bottom: 0;
}
.grid-2 > div,
.grid-3 > div {
  min-width: 0;
}
.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-x: contain;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 12px;
  line-height: 1.6;
}
th,
td {
  padding: 15px 13px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th {
  background: var(--bg-tertiary);
  font-weight: 500;
  font-size: 11px;
}
td {
  color: var(--text-secondary);
}
tr:last-child td {
  border-bottom: 0;
}
code,
.code-block {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--code-bg);
  border-radius: 4px;
}
code {
  padding: 3px 5px;
  overflow-wrap: anywhere;
}
.code-block {
  padding: 18px;
  overflow-x: auto;
  margin: 16px 0;
}
.chart-container {
  width: 100%;
  margin: 18px 0;
  overflow: hidden;
  min-width: 0;
}
.svg-diagram {
  display: block;
  width: 100%;
  height: auto;
  max-width: 860px;
  margin: 20px auto;
}
.svg-diagram text {
  font-family: "Space Grotesk", sans-serif;
}
#memoryChart text,
#errorChart text {
  font-family: var(--font-mono);
}
.svg-diagram:not(#memoryChart):not(#errorChart) rect {
  rx: 6px;
}
.svg-diagram [stroke="#2f9e44"] {
  stroke: var(--success);
}
.svg-diagram [fill="#2f9e44"] {
  fill: var(--success);
}
.svg-diagram [stroke="#e03131"] {
  stroke: var(--error);
}
.svg-diagram [fill="#e03131"] {
  fill: var(--error);
}
.svg-diagram [stroke="#f59f00"] {
  stroke: var(--orange);
}
.svg-diagram [fill="#f59f00"] {
  fill: var(--orange);
}
.svg-diagram text[fill="white"] {
  fill: var(--bg-secondary);
}
.svg-diagram text:not([fill]),
.svg-diagram text[fill="#212529"] {
  fill: var(--text-primary);
}
.svg-diagram text[fill="#495057"],
.svg-diagram text[fill="#6c757d"] {
  fill: var(--text-secondary);
}
.svg-diagram [stroke="#4361ee"] {
  stroke: var(--accent);
}
.svg-diagram [fill="#4361ee"] {
  fill: var(--accent);
}
.svg-diagram [fill="#e9ecef"] {
  fill: var(--bg-tertiary);
}
.svg-diagram [fill="#e7f5ff"],
.svg-diagram [fill="#f0fdf4"] {
  fill: var(--accent-soft);
}
.svg-diagram [fill="#fff5f5"],
.svg-diagram [fill="#fef3c7"],
.svg-diagram [fill="#fff3cd"] {
  fill: var(--bg-tertiary);
}
/* The opening spread */
.home-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 23px;
}
.home-heading .eyebrow {
  margin: 0;
}
.edition {
  font: 9px var(--font-mono);
  letter-spacing: 1px;
  color: var(--text-tertiary);
}
.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 25px;
  min-height: 430px;
  align-items: center;
}
.hero-copy {
  padding: 20px 0 30px;
}
.hero h1 {
  font-size: clamp(43px, 4.3vw, 68px);
  line-height: 1.04;
  letter-spacing: -3.3px;
  font-weight: 500;
  margin: 0 0 25px;
}
.hero h1 em {
  display: block;
  font:
    italic 1.1em/1.06 "Instrument Serif",
    Georgia,
    serif;
  letter-spacing: -2.5px;
  color: var(--accent);
  margin-top: 4px;
}
.hero-description {
  max-width: 405px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.9;
}
.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  align-items: center;
}
.primary-link,
.secondary-link {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  padding: 12px 18px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 12px;
  font-weight: 500;
}
.primary-link {
  background: var(--text-primary);
  color: var(--bg-primary);
}
.primary-link:hover {
  background: var(--accent);
  color: var(--bg-primary);
}
.secondary-link {
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.secondary-link:hover {
  background: var(--bg-tertiary);
}
.hero-footnote {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 20px;
  color: var(--text-tertiary);
  font: 9px var(--font-mono);
}
.hero-footnote svg {
  width: 12px;
  height: 12px;
}
.visualizer {
  position: relative;
  height: 420px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: radial-gradient(
    ellipse at 45% 40%,
    #ecefe1 0%,
    #e0e5d5 72%,
    #d7ddcb 100%
  );
  overflow: hidden;
  isolation: isolate;
}
.visualizer:before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(#6170580c 1px, transparent 1px),
    linear-gradient(90deg, #6170580c 1px, transparent 1px);
  background-size: 28px 28px;
}
.visualizer-topline {
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #4f5c4b;
  font: 9px var(--font-mono);
  letter-spacing: 1px;
  pointer-events: none;
  z-index: 2;
}
.visualizer-topline span:first-child {
  display: flex;
  gap: 7px;
  align-items: center;
}
.visualizer-topline .status-dot {
  background: #377661;
  box-shadow: none;
}
.visualizer-stage {
  position: absolute;
  inset: 18px 0 63px;
  outline-offset: -6px !important;
}
.visualizer-stage canvas {
  width: 100%;
  height: 100%;
  display: block;
  position: relative;
  z-index: 1;
  touch-action: pan-y;
}
.visualizer-caption {
  position: absolute;
  bottom: 74px;
  width: 100%;
  text-align: center;
  font: 9px var(--font-mono);
  color: #5d6758;
  z-index: 2;
  pointer-events: none;
}
.precision-control {
  position: absolute;
  bottom: 19px;
  left: 20px;
  right: 20px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  border-top: 1px solid #bec6b5;
  padding-top: 14px;
  z-index: 2;
}
.precision-control > span {
  font: 9px var(--font-mono);
  color: #4c5b4b;
}
.precision-options {
  display: flex;
  gap: 3px;
  padding: 3px;
  background: #ced5c6;
  border-radius: 5px;
}
.precision-options button {
  font: 10px var(--font-mono);
  color: #4c5b4b;
  background: transparent;
  border: 0;
  padding: 6px 10px;
  border-radius: 3px;
}
.precision-options button[aria-pressed="true"] {
  background: #fcfcf3;
  color: #243b2d;
  box-shadow: 0 1px 3px #2a3b2520;
}
.precision-float {
  position: absolute;
  right: 18px;
  top: 75px;
  font: 9px var(--font-mono);
  color: #52604e;
  background: #f6f7edbf;
  border: 1px solid #c7cebc;
  border-radius: 5px;
  padding: 7px 9px;
  z-index: 2;
  pointer-events: none;
}
.precision-float strong {
  display: block;
  font-size: 17px;
  font-weight: 400;
  color: #264a36;
}
.crt-fallback {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 220px;
  transform: translate(-50%, -50%) rotate(-7deg);
  padding: 17px 17px 28px;
  border-radius: 24px;
  background: linear-gradient(140deg, #ebe4cf, #a9af9d);
  box-shadow:
    12px 15px 0 #7c8876,
    20px 30px 30px #46553b30;
  border: 2px solid #f6f0dc;
}
.crt-screen {
  height: 145px;
  border-radius: 15px;
  background: repeating-linear-gradient(
    0deg,
    #182d23 0px,
    #182d23 2px,
    #1e382b 3px,
    #1e382b 4px
  );
  border: 9px solid #32392f;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 34px;
  box-shadow: inset 0 0 25px #050d06;
}
.crt-screen i {
  display: block;
  width: 23px;
  height: 43px;
  background: #b9edb1;
  box-shadow: 0 0 15px #97f9a3;
  border-radius: 12px;
}
.crt-fallback:after {
  content: "Q / 01";
  font: 8px var(--font-mono);
  color: #354330;
  position: absolute;
  bottom: 7px;
  left: 21px;
}
.visualizer[data-ready="true"] .crt-fallback {
  visibility: hidden;
}
.stat-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 28px 0 37px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}
.stat {
  padding: 0 27px;
  border-right: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 17px;
}
.stat:first-child {
  padding-left: 0;
}
.stat:last-child {
  border: 0;
  padding-right: 0;
}
.stat-number {
  font-size: 35px;
  font-weight: 500;
  letter-spacing: -2px;
  white-space: nowrap;
  line-height: 1.2;
}
.stat-number span {
  color: var(--accent);
}
.stat-caption {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.stat-caption strong {
  display: block;
  color: var(--text-primary);
  font-weight: 500;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}
.section-heading h2 {
  font-size: 21px;
  letter-spacing: -0.7px;
  font-weight: 500;
}
.section-heading > a {
  font: 10px var(--font-mono);
  text-decoration: none;
  color: var(--text-secondary);
}
.section-heading .section-kicker {
  font: 9px var(--font-mono);
  color: var(--text-tertiary);
  letter-spacing: 1px;
}
.learning-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.learning-card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 22px;
  text-decoration: none;
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition:
    border-color 0.2s,
    transform 0.2s;
}
.learning-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}
.learning-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.learning-card-top svg {
  width: 28px;
  height: 28px;
  stroke-width: 1.25;
  color: var(--accent);
}
.learning-card-top span {
  font: 9px var(--font-mono);
  color: var(--text-tertiary);
}
.learning-card h3 {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.5px;
  margin-bottom: 7px;
}
.learning-card p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 220px;
}
.learning-card-footer {
  margin-top: 24px;
  display: flex;
  justify-content: space-between;
  font: 9px var(--font-mono);
  color: var(--text-secondary);
}
.learning-card.featured {
  background: var(--accent-soft);
}
.memory-section {
  margin-top: 37px;
}
.memory-layout {
  display: grid;
  grid-template-columns: 1fr 1.75fr;
  gap: 28px;
  align-items: center;
}
.memory-copy .eyebrow {
  font-size: 9px;
}
.memory-copy h3 {
  font-size: 26px;
  line-height: 1.25;
  font-weight: 500;
  letter-spacing: -1px;
  margin-bottom: 15px;
}
.memory-copy p {
  font-size: 12px;
  line-height: 1.9;
  color: var(--text-secondary);
}
.memory-note {
  font: 9px var(--font-mono);
  color: var(--text-tertiary);
  margin-top: 16px;
}
.memory-chart {
  margin: 0;
}
.memory-chart .svg-diagram {
  margin: 0;
}
.takeaway {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 21px 24px;
  margin-top: 22px;
  border-left: 2px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 7px 7px 0;
}
.takeaway svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--accent);
}
.takeaway p {
  font-size: 12px;
  color: var(--text-secondary);
}
.takeaway strong {
  color: var(--text-primary);
  font-weight: 500;
}
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 38px;
  padding-top: 19px;
  display: flex;
  justify-content: space-between;
  color: var(--text-tertiary);
  font: 9px var(--font-mono);
  gap: 15px;
}
.site-footer span:last-child {
  color: var(--accent);
}
/* Experiment workspaces */
.playground-layout {
  display: grid;
  grid-template-columns: 184px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}
.experiment-menu {
  position: sticky;
  top: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.experiment-menu .eyebrow {
  font-size: 9px;
  margin: 0 0 8px;
}
.experiment-tab {
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  padding: 12px;
  color: var(--text-secondary);
  font-size: 12px;
}
.experiment-tab span {
  font: 9px var(--font-mono);
  color: var(--text-tertiary);
}
.experiment-tab:hover {
  background: var(--bg-tertiary);
}
.experiment-tab[aria-selected="true"] {
  border-color: var(--border);
  background: var(--bg-secondary);
  color: var(--accent);
}
.experiment-tab[aria-selected="true"]:after {
  content: "↗";
  margin-left: auto;
}
.experiment-note {
  padding: 17px 12px;
  border-top: 1px solid var(--border);
  margin-top: 12px;
  color: var(--text-tertiary);
  font-size: 10px;
  line-height: 1.8;
}
.playground-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  margin-bottom: 0;
  min-width: 0;
  scroll-margin-top: 30px;
}
.playground-card[hidden] {
  display: none;
}
.playground-header {
  padding-bottom: 23px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--border);
}
.playground-title {
  font-size: 29px;
  letter-spacing: -1px;
  font-weight: 500;
  margin-bottom: 10px;
  line-height: 1.25;
}
.playground-header > p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.playground-tags {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
  margin-top: 15px;
}
.tag {
  padding: 3px 9px;
  font: 9px/1.6 var(--font-mono);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
  background: var(--bg-primary);
}
.tag:first-child {
  color: var(--accent);
  background: var(--accent-soft);
}
.playground-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: 30px;
}
.control-group {
  min-width: 0;
}
.control-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  margin-bottom: 13px;
}
.control-row {
  display: flex;
  align-items: center;
  gap: 15px;
  min-height: 35px;
}
.control-value {
  font: 11px var(--font-mono);
  min-width: 65px;
  padding: 8px;
  text-align: center;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
}
.slider-container {
  margin: 22px 0;
}
.slider-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 13px;
}
input[type="range"] {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  min-width: 0;
  height: 4px;
  border-radius: 5px;
  background: linear-gradient(
    to right,
    var(--accent) var(--range-progress, 50%),
    var(--bg-tertiary) var(--range-progress, 50%)
  );
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 4px solid var(--accent);
  box-shadow: 0 0 0 3px var(--bg-secondary);
}
input[type="range"]::-moz-range-thumb {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 4px solid var(--accent);
  box-shadow: 0 0 0 3px var(--bg-secondary);
}
.results-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--border);
  border-radius: 7px;
  overflow: hidden;
  background: var(--bg-primary);
}
.result-card {
  padding: 19px 16px;
  border-right: 1px solid var(--border);
  min-width: 0;
}
.result-card:last-child {
  border: 0;
}
.result-label {
  font-size: 10px;
  color: var(--text-secondary);
  margin-bottom: 9px;
}
.result-value {
  font-size: 32px;
  letter-spacing: -1.5px;
  font-weight: 500;
  line-height: 1.2;
  color: var(--accent);
}
.result-unit {
  font: 12px var(--font-mono);
  color: var(--text-tertiary);
  margin-left: 4px;
}
.visualization {
  margin-top: 25px;
  padding: 20px 15px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg-primary);
}
.visualization canvas {
  width: 100%;
  height: 220px;
  display: block;
}
.visualization-heading {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin: 0 0 18px;
  font: 9px var(--font-mono);
  color: var(--text-secondary);
}
.toggle-container {
  display: flex;
  align-items: center;
  gap: 13px;
  margin: 17px 0;
  font-size: 12px;
}
.toggle-switch {
  display: inline-block;
  position: relative;
  flex-shrink: 0;
  width: 40px;
  height: 23px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-tertiary);
  cursor: pointer;
  transition: background 0.2s;
}
.toggle-switch.active {
  background: var(--accent);
  border-color: var(--accent);
}
.toggle-slider {
  position: absolute;
  left: 3px;
  top: 3px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--bg-secondary);
  transition: transform 0.2s;
  pointer-events: none;
}
.toggle-switch.active .toggle-slider {
  transform: translateX(17px) !important;
  left: 3px !important;
}
.experiment-context {
  margin-top: 20px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 20px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 11px;
}
.experiment-context svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent);
  margin-top: 2px;
}
.experiment-context strong {
  color: var(--text-primary);
  font-weight: 500;
}
.matrix-table th,
.matrix-table td {
  text-align: center;
  font-family: var(--font-mono);
}
.category-tile {
  padding: 22px;
  border-radius: 6px;
  background: var(--accent-soft);
  border-top: 2px solid var(--accent);
}
.category-tile:nth-child(2) {
  background: var(--bg-tertiary);
  border-color: var(--orange);
}
.category-tile:nth-child(3) {
  background: var(--bg-primary);
  border-color: var(--text-tertiary);
}
.category-tile p {
  margin-top: 10px;
}
.page-companion {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 22px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 25px;
}
.page-companion-copy {
  display: flex;
  align-items: center;
  gap: 14px;
}
.mini-crt {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 35px;
  height: 29px;
  border: 4px solid var(--text-tertiary);
  border-radius: 7px;
  background: #243c2b;
  transform: rotate(-5deg);
  flex-shrink: 0;
}
.mini-crt i {
  height: 9px;
  width: 4px;
  background: #b9edb1;
  border-radius: 3px;
}
.page-companion p {
  font-size: 11px;
  color: var(--text-secondary);
}
.page-companion p strong {
  display: block;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 3px;
}
.page-companion a {
  font-size: 11px;
  white-space: nowrap;
  text-decoration: none;
}
.nav-backdrop {
  display: none;
}
@media (min-width: 1800px) {
  .container {
    margin-right: auto;
    padding-left: 64px;
    padding-right: 64px;
  }
  .hero h1 {
    font-size: 76px;
  }
  .hero {
    gap: 50px;
  }
  .visualizer {
    height: 460px;
  }
}
@media (max-width: 1200px) {
  :root {
    --sidebar: 210px;
  }
  .sidebar {
    padding-left: 13px;
    padding-right: 13px;
  }
  .container {
    padding: 28px;
  }
  .topbar {
    padding: 0 28px;
  }
  .hero {
    gap: 15px;
  }
  .hero h1 {
    font-size: 49px;
  }
  .visualizer {
    height: 380px;
  }
  .stat {
    padding: 0 17px;
    gap: 10px;
  }
  .stat-number {
    font-size: 30px;
  }
  .stat-caption {
    font-size: 10px;
  }
  .learning-card {
    padding: 18px;
  }
  .playground-layout {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 15px;
  }
  .playground-card {
    padding: 23px;
  }
  .experiment-tab {
    font-size: 11px;
    padding: 11px 8px;
    gap: 8px;
  }
  .results-grid .result-card {
    padding: 16px 10px;
  }
  .result-label {
    font-size: 9px;
  }
}
@media (max-width: 1000px) {
  :root {
    --sidebar: 194px;
  }
  .nav-item {
    font-size: 11px;
    gap: 9px;
    padding: 10px;
  }
  .nav-brand {
    font-size: 16px;
    gap: 9px;
  }
  .brand-subtitle {
    font-size: 8px;
  }
  .hero h1 {
    font-size: 42px;
    letter-spacing: -2.4px;
  }
  .hero-actions {
    flex-wrap: wrap;
    gap: 8px;
  }
  .primary-link,
  .secondary-link {
    font-size: 11px;
    padding: 10px 12px;
    gap: 10px;
  }
  .visualizer {
    height: 355px;
  }
  .hero-description {
    font-size: 12px;
  }
  .precision-control {
    left: 13px;
    right: 13px;
  }
  .precision-control > span {
    font-size: 8px;
  }
  .precision-options button {
    padding: 6px 7px;
  }
  .visualizer-topline {
    font-size: 8px;
    left: 14px;
    right: 14px;
  }
  .precision-float {
    right: 13px;
    top: 55px;
  }
  .stat {
    display: block;
  }
  .stat-caption {
    margin-top: 7px;
  }
  .learning-card {
    padding: 16px;
  }
  .learning-card h3 {
    font-size: 15px;
  }
  .learning-card p {
    font-size: 11px;
  }
  .memory-layout {
    grid-template-columns: 1fr;
  }
  .memory-copy {
    max-width: 500px;
  }
  .playground-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .experiment-menu {
    position: static;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 5px;
  }
  .experiment-menu .eyebrow,
  .experiment-note {
    display: none;
  }
  .experiment-tab {
    padding: 8px 10px;
  }
  .experiment-tab[aria-selected="true"]:after {
    display: none;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .page-title {
    font-size: 38px;
  }
}
@media (max-width: 760px) {
  :root {
    --sidebar: 230px;
  }
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s;
    padding: 25px 17px;
  }
  .sidebar[data-open="true"] {
    transform: translateX(0);
  }
  .nav-backdrop[data-open="true"] {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 105;
    background: #121b1466;
    border: 0;
    border-radius: 0;
    backdrop-filter: blur(3px);
  }
  .nav-item {
    font-size: 12px;
  }
  .nav-brand {
    font-size: 18px;
  }
  .nav-menu {
    margin-top: 20px;
  }
  .sidebar-footer {
    padding-top: 15px;
  }
  .topbar {
    margin-left: 0;
    height: 62px;
    padding: 0 22px;
  }
  .menu-toggle {
    display: grid;
    flex-shrink: 0;
  }
  .breadcrumb {
    margin-right: auto;
    font-size: 10px;
    gap: 8px;
  }
  .breadcrumb > span:first-child,
  .breadcrumb > span:nth-child(2) {
    display: none;
  }
  .topbar-actions {
    gap: 10px;
  }
  .version-label {
    font-size: 8px;
  }
  .container {
    margin: 0;
    padding: 25px 22px;
  }
  .hero {
    gap: 20px;
    grid-template-columns: 1fr 1fr;
    min-height: 0;
  }
  .hero h1 {
    font-size: 40px;
  }
  .hero-copy {
    padding-top: 10px;
  }
  .visualizer {
    height: 360px;
  }
  .home-heading {
    margin-bottom: 19px;
  }
  .edition {
    font-size: 8px;
  }
  .home-heading .eyebrow {
    font-size: 9px;
  }
  .hero-footnote {
    font-size: 8px;
  }
  .stat-strip {
    margin: 24px 0 29px;
  }
  .section-heading h2 {
    font-size: 19px;
  }
  .learning-grid {
    gap: 10px;
  }
  .learning-card {
    padding: 16px 13px;
  }
  .learning-card-top {
    margin-bottom: 17px;
  }
  .learning-card-top span {
    font-size: 8px;
  }
  .learning-card-footer {
    font-size: 8px;
  }
  .grid-2 {
    gap: 16px;
  }
  .page-title {
    font-size: 36px;
  }
  .page-header {
    padding-top: 6px;
  }
  .page-index {
    font-size: 9px;
  }
  .card {
    padding: 22px;
  }
  .page-companion {
    padding: 16px;
    gap: 12px;
  }
  .site-footer {
    font-size: 8px;
  }
  .visualizer-topline > span:last-child {
    display: none;
  }
}
@media (max-width: 560px) {
  .topbar {
    padding: 0 18px;
  }
  .container {
    padding: 24px 18px;
  }
  .version-label {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    gap: 5px;
  }
  .hero-copy {
    padding: 7px 0 24px;
  }
  .hero h1 {
    font-size: 54px;
    letter-spacing: -3px;
    margin-bottom: 20px;
  }
  .hero h1 em {
    letter-spacing: -2px;
  }
  .hero-description {
    font-size: 13px;
    max-width: 355px;
  }
  .hero-actions {
    margin-top: 23px;
  }
  .primary-link,
  .secondary-link {
    padding: 12px 15px;
    font-size: 12px;
  }
  .hero-footnote {
    margin-top: 17px;
    font-size: 9px;
  }
  .visualizer {
    height: 345px;
  }
  .visualizer-topline > span:last-child {
    display: inline;
  }
  .visualizer-caption {
    bottom: 76px;
  }
  .precision-control {
    left: 20px;
    right: 20px;
  }
  .precision-control > span {
    font-size: 9px;
  }
  .precision-options button {
    padding: 7px 12px;
  }
  .stat-strip {
    padding: 20px 0;
  }
  .stat {
    padding: 0 12px;
  }
  .stat-number {
    font-size: 30px;
    letter-spacing: -1.5px;
  }
  .stat-caption {
    font-size: 9px;
    line-height: 1.7;
  }
  .stat-caption strong {
    font-size: 10px;
  }
  .section-heading h2 {
    font-size: 19px;
  }
  .section-heading > a,
  .section-heading .section-kicker {
    font-size: 8px;
  }
  .learning-grid {
    grid-template-columns: 1fr;
  }
  .learning-card {
    padding: 20px;
  }
  .learning-card-top {
    margin-bottom: 15px;
  }
  .learning-card h3 {
    font-size: 19px;
  }
  .learning-card p {
    max-width: 100%;
    font-size: 12px;
  }
  .learning-card-footer {
    margin-top: 18px;
    font-size: 9px;
  }
  .learning-card-top span {
    font-size: 9px;
  }
  .memory-layout {
    gap: 15px;
  }
  .memory-copy h3 {
    font-size: 26px;
  }
  .memory-section {
    margin-top: 29px;
  }
  .takeaway {
    padding: 17px;
  }
  .site-footer {
    line-height: 1.7;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .card {
    padding: 20px;
  }
  .page-title {
    font-size: 34px;
    letter-spacing: -1.6px;
  }
  .page-subtitle {
    font-size: 12px;
  }
  .page-header {
    margin-bottom: 23px;
    padding-bottom: 23px;
  }
  .playground-card {
    padding: 22px 18px;
  }
  .playground-controls {
    grid-template-columns: 1fr;
    gap: 23px;
  }
  .playground-title {
    font-size: 27px;
  }
  .results-grid .result-card {
    padding: 16px 10px;
  }
  .result-value {
    font-size: 26px;
  }
  .result-label {
    font-size: 9px;
    min-height: 30px;
  }
  .result-unit {
    font-size: 10px;
  }
  .experiment-tab {
    padding: 9px 10px;
    font-size: 11px;
  }
  .experiment-tab span {
    font-size: 8px;
  }
  .experiment-context {
    padding: 16px;
  }
  .page-companion {
    align-items: flex-start;
    flex-direction: column;
  }
  .page-companion > a {
    margin-left: 49px;
  }
  .table-scroll table {
    min-width: 570px;
  }
  th,
  td {
    padding: 12px;
  }
  .visualization {
    padding: 17px 10px 7px;
  }
  .visualization-heading {
    font-size: 8px;
  }
  .toggle-switch {
    width: 40px;
    min-width: 40px;
  }
  .card .grid-2 {
    margin-top: 17px;
  }
  .page-index {
    margin-bottom: 13px;
  }
}
.motion-toggle {
  position: absolute;
  left: 19px;
  bottom: 77px;
  z-index: 3;
  width: 25px;
  height: 25px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 1px solid #bcc6b3;
  border-radius: 50%;
  background: #f3f5e8;
  color: #3d543e;
  font-size: 12px;
}
.motion-toggle:hover {
  background: #e6eddb;
}
.motion-toggle[hidden] {
  display: none;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
  }
}

@media (max-width: 560px) {
  .memory-chart .svg-diagram text {
    font-size: 14px;
  }
  .hero-actions {
    gap: 9px;
  }
  .hero-actions a {
    font-size: 11px;
    padding: 12px 13px;
    gap: 9px;
  }
  .visualization canvas {
    height: 180px;
  }
  .brand-subtitle {
    letter-spacing: 1px;
  }
}