:root {
  color-scheme: light;
  --paper: #f2f0e8;
  --paper-raised: #fbfaf5;
  --ink: #151713;
  --muted: #64675f;
  --faint: #8e9188;
  --line: rgba(21, 23, 19, 0.18);
  --line-strong: rgba(21, 23, 19, 0.42);
  --accent: #3454e8;
  --accent-ink: #ffffff;
  --accent-soft: #dfe5ff;
  --code-bg: #171a18;
  --code-ink: #f4f2ea;
  --error: #b52d2d;
  --shadow: rgba(21, 23, 19, 0.12);
  --shell: min(1440px, calc(100% - 96px));
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #0f1110;
  --paper-raised: #181b18;
  --ink: #f3f1e8;
  --muted: #a5a79f;
  --faint: #777a73;
  --line: rgba(243, 241, 232, 0.16);
  --line-strong: rgba(243, 241, 232, 0.38);
  --accent: #7990ff;
  --accent-ink: #10131f;
  --accent-soft: #20294e;
  --code-bg: #080a09;
  --code-ink: #f5f3eb;
  --error: #ff8a83;
  --shadow: rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

button,
textarea,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

img,
svg {
  display: block;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  translate: 0 -160%;
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
  text-decoration: none;
}

.skip-link:focus {
  translate: 0;
}

.section-shell,
.nav-shell {
  width: var(--shell);
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line);
}

.nav-shell {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 11px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 820;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(14px, 2.2vw, 30px);
  min-width: 0;
}

.nav-links > a {
  position: relative;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 760;
  text-decoration: none;
}

.nav-links > a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  scale: 0 1;
  transform-origin: left;
  background: var(--accent);
  transition: scale 150ms ease;
}

.nav-links > a:hover,
.nav-links > a[aria-current="page"] {
  color: var(--ink);
}

.nav-links > a:hover::after,
.nav-links > a[aria-current="page"]::after {
  scale: 1 1;
}

.nav-github {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.nav-github img {
  opacity: 0.8;
}

:root[data-theme="dark"] .nav-github img {
  filter: invert(1);
}

.theme-switcher,
.surface-switcher,
.hero-segmented {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: color-mix(in srgb, var(--paper-raised) 82%, transparent);
}

.theme-switcher button,
.surface-switcher button,
.hero-segmented button {
  min-height: 32px;
  padding: 0 11px;
  border: 0;
  border-radius: 2px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.theme-switcher button {
  width: 32px;
  min-height: 30px;
  padding: 0;
  display: grid;
  place-items: center;
}

.theme-switcher button[aria-pressed="true"],
.surface-switcher button[aria-pressed="true"],
.hero-segmented button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}

.control-icon {
  width: 14px;
  height: 14px;
  display: block;
  background: currentColor;
  -webkit-mask: var(--control-icon) center / contain no-repeat;
  mask: var(--control-icon) center / contain no-repeat;
}

.icon-sun {
  --control-icon: url("https://cdn.jsdelivr.net/npm/@phosphor-icons/core@2.1.1/assets/bold/sun-bold.svg");
}

.icon-moon {
  --control-icon: url("https://cdn.jsdelivr.net/npm/@phosphor-icons/core@2.1.1/assets/bold/moon-bold.svg");
}

.icon-arrow-up-right {
  --control-icon: url("https://cdn.jsdelivr.net/npm/@phosphor-icons/core@2.1.1/assets/bold/arrow-up-right-bold.svg");
}

.icon-arrow-right {
  --control-icon: url("https://cdn.jsdelivr.net/npm/@phosphor-icons/core@2.1.1/assets/bold/arrow-right-bold.svg");
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 780;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 22px;
  height: 2px;
  display: inline-block;
  margin-right: 8px;
  translate: 0 -0.19em;
  background: var(--accent);
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  border-radius: 3px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 820;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition:
    translate 140ms ease,
    box-shadow 140ms ease,
    background-color 140ms ease;
}

.button:hover {
  translate: -2px -2px;
}

.button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 5px 5px 0 var(--ink);
}

.button-primary:hover {
  box-shadow: 7px 7px 0 var(--ink);
}

.button-secondary {
  background: transparent;
  color: var(--ink);
}

.button-secondary:hover {
  background: var(--paper-raised);
}

/* Home */

.home-hero {
  min-height: calc(100svh - 73px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
  gap: clamp(48px, 6vw, 86px);
  padding-block: 62px 72px;
}

.hero-copy {
  min-width: 0;
  max-width: 800px;
}

.hero-copy h1,
.page-intro h1 {
  margin: 20px 0 0;
  font-size: clamp(3.25rem, 6.5vw, 6.9rem);
  font-weight: 840;
  line-height: 0.9;
  letter-spacing: -0.075em;
}

.hero-copy h1 {
  margin-top: 0;
  font-size: clamp(3.2rem, 5.3vw, 5.7rem);
}

.hero-lede {
  max-width: 31rem;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.3vw, 1.17rem);
  line-height: 1.58;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-facts {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0;
  margin: 42px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 760;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-facts li + li::before {
  content: "/";
  display: inline-block;
  margin-inline: 16px;
  color: var(--line-strong);
}

.hero-workbench {
  width: 100%;
  min-width: 0;
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--paper-raised);
  box-shadow: 12px 12px 0 var(--accent);
}

.workbench-heading {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 14px 10px 10px;
  border-bottom: 1px solid var(--line);
}

.workbench-heading > div:first-child {
  display: flex;
  align-items: center;
  gap: 12px;
}

.workbench-heading p {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 780;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.workbench-index {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 900;
}

.diagram-stage,
.feature-diagram,
.showcase-stage {
  position: relative;
  min-width: 0;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.diagram-stage-hero {
  min-height: 485px;
  display: flex;
  align-items: flex-start;
  padding: 12px 10px 2px;
  overflow-y: hidden;
}

.diagram-loading {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  background: var(--paper-raised);
}

.is-ready > .diagram-loading,
.feature-diagram.is-ready > .diagram-loading,
.showcase-stage.is-ready > .diagram-loading {
  display: none;
}

lines-and-arrows {
  width: 100%;
  min-width: 0;
  display: block;
  align-self: flex-start;
}

.hero-workbench figcaption {
  min-height: 49px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 11px 16px;
  color: var(--muted);
  font-size: 0.72rem;
}

.hero-workbench figcaption a {
  flex: 0 0 auto;
  color: var(--ink);
  font-weight: 760;
}

.hero-source-editor,
.showcase-source-editor {
  width: 100%;
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  align-self: stretch;
  padding: 16px;
  background: var(--code-bg);
  color: var(--code-ink);
}

.hero-source-editor {
  min-height: clamp(520px, 58vw, 700px);
}

.hero-source-editor label,
.showcase-source-editor label {
  margin-bottom: 10px;
  color: color-mix(in srgb, var(--code-ink) 65%, transparent);
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 760;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hero-source-editor textarea,
.showcase-source-editor textarea {
  width: 100%;
  min-height: 390px;
  resize: vertical;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: inherit;
  font-family: var(--mono);
  font-size: 0.76rem;
  line-height: 1.62;
  tab-size: 2;
}

.hero-source-actions,
.showcase-source-actions {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-source-actions button,
.showcase-source-actions button {
  min-height: 34px;
  padding: 0 13px;
  border: 0;
  border-radius: 2px;
  background: var(--accent);
  color: var(--accent-ink);
  cursor: pointer;
  font-size: 0.72rem;
  font-weight: 800;
}

.hero-source-error,
.feature-error,
.showcase-error {
  margin: 0;
  color: var(--error);
  font-size: 0.72rem;
}

.home-principles-section {
  padding-block: 96px 104px;
}

.page-next h2 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2rem, 3.8vw, 4.2rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.page-next > div > p:last-child {
  max-width: 610px;
  margin: 22px 0 0;
  color: var(--muted);
}

.home-principles {
  margin: 0;
}

.home-principles > div {
  display: grid;
  grid-template-columns: minmax(180px, 0.36fr) minmax(0, 1fr);
  gap: clamp(36px, 7vw, 110px);
  padding: 22px 0 23px;
}

.home-principles dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.home-principles dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

/* Shared inner-page framing */

.page-intro {
  display: grid;
  grid-template-columns: 0.48fr 1.25fr 0.72fr;
  align-items: end;
  gap: 40px;
  padding-block: clamp(76px, 10vw, 148px) 72px;
  border-bottom: 1px solid var(--line-strong);
}

.page-intro h1 {
  margin: 0;
  font-size: clamp(3.7rem, 7.2vw, 8rem);
}

.page-intro-lede {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: clamp(1rem, 1.25vw, 1.15rem);
}

.page-next {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 48px;
  padding-block: 94px;
  border-top: 1px solid var(--line-strong);
}

.page-next h2 {
  max-width: 760px;
}

.page-next-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

/* Features */

.features-page main {
  counter-reset: feature;
}

.feature-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(300px, 0.78fr) minmax(520px, 1.22fr);
  align-items: start;
  gap: clamp(50px, 8vw, 130px);
  padding-block: clamp(78px, 9vw, 132px);
  border-top: 1px solid var(--line);
  counter-increment: feature;
}

.features-intro + .feature-row {
  border-top: 0;
}

.feature-row::before {
  content: "0" counter(feature);
  position: absolute;
  top: 18px;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.feature-copy {
  min-width: 0;
}

.feature-copy h2 {
  max-width: 520px;
  margin: 0;
  font-size: clamp(2.15rem, 3.8vw, 4.3rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.feature-copy > p {
  max-width: 500px;
  margin: 20px 0 0;
  color: var(--muted);
}

.feature-source {
  margin: 32px 0 0;
  padding: 20px 22px;
  overflow-x: auto;
  border-left: 3px solid var(--accent);
  background: var(--code-bg);
  color: var(--code-ink);
  font-family: var(--mono);
  font-size: 0.71rem;
  line-height: 1.62;
  tab-size: 2;
}

.feature-figure {
  min-width: 0;
  margin: 0;
  padding-top: 9px;
}

.feature-toolbar,
.showcase-toolbar {
  min-height: 46px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.feature-diagram {
  min-height: 300px;
  padding: 8px 0 0;
}

.feature-diagram lines-and-arrows {
  min-width: 460px;
}

.feature-error {
  min-height: 1.2em;
  margin-top: 10px;
}

.feature-row-text-only,
.feature-row-themes {
  grid-template-columns: minmax(0, 1fr);
}

.feature-row-text-only {
  padding-block: clamp(72px, 8vw, 112px);
}

.feature-row-text-only .feature-copy,
.feature-row-themes .feature-copy {
  display: block;
  max-width: 760px;
}

.theme-preview-grid {
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 6px 0 0;
}

.theme-preview {
  min-width: 0;
  overflow: hidden;
  padding: 12px 10px 6px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
}

.theme-preview > p {
  margin: 0 0 8px 4px;
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.theme-preview lines-and-arrows {
  width: 100%;
  min-width: 0;
}

.theme-preview-light {
  background: #f6f7f9;
  color: #20242c;
}

.theme-preview-dark {
  background: #111319;
  color: #e7eaf0;
  border-color: rgba(231, 234, 240, 0.32);
}

.theme-preview-auto {
  background: #f6f7f9;
  color: #20242c;
}

.theme-preview-error {
  margin-top: 0;
}

@media (prefers-color-scheme: dark) {
  .theme-preview-auto {
    background: #111319;
    color: #e7eaf0;
    border-color: rgba(231, 234, 240, 0.32);
  }
}

/* Showcase */

.showcase-contents {
  display: grid;
  grid-template-columns: 0.55fr 1.45fr;
  gap: clamp(44px, 8vw, 130px);
  padding-block: 76px 110px;
}

.showcase-contents-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 3.4vw, 3.8rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.showcase-contents-heading p {
  max-width: 300px;
  margin: 18px 0 0;
  color: var(--muted);
}

.showcase-contents-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: start;
  gap: 0 34px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: contents;
}

.showcase-contents-list li {
  border-top: 1px solid var(--line);
  counter-increment: contents;
}

.showcase-contents-list li:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.showcase-contents-list a {
  position: relative;
  min-height: 94px;
  display: grid;
  align-content: center;
  gap: 6px;
  padding: 15px 28px 15px 34px;
  text-decoration: none;
  transition: background-color 140ms ease;
}

.showcase-contents-list a::before {
  content: counter(contents, decimal-leading-zero);
  position: absolute;
  top: 18px;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 850;
}

.showcase-contents-list a::after {
  content: "↘";
  position: absolute;
  right: 2px;
  top: 17px;
  color: var(--faint);
  font-family: var(--mono);
}

.showcase-contents-list a:hover {
  background: var(--paper-raised);
}

.showcase-contents-name {
  font-size: 0.9rem;
  font-weight: 820;
}

.showcase-contents-hook {
  color: var(--muted);
  font-size: 0.77rem;
  line-height: 1.45;
}

.showcase-page main {
  counter-reset: showcase;
}

.showcase-case {
  position: relative;
  display: grid;
  grid-template-columns: minmax(260px, 0.45fr) minmax(600px, 1.25fr);
  align-items: start;
  gap: clamp(56px, 8vw, 134px);
  padding-block: clamp(86px, 10vw, 150px);
  border-top: 1px solid var(--line-strong);
  counter-increment: showcase;
}

.showcase-case::before {
  content: counter(showcase, decimal-leading-zero);
  position: absolute;
  top: 22px;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 850;
}

.showcase-case-header {
  position: sticky;
  top: 100px;
}

.showcase-area {
  margin: 0;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 820;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.showcase-case-header h2 {
  margin: 16px 0 0;
  font-size: clamp(2rem, 3.5vw, 4.1rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.showcase-case-header > p:last-child {
  margin: 20px 0 0;
  color: var(--muted);
}

.showcase-figure {
  min-width: 0;
  margin: 0;
}

.showcase-stage {
  min-height: 360px;
  padding: 8px 0 0;
}

.showcase-stage lines-and-arrows {
  min-width: 580px;
}

.showcase-source-editor {
  min-height: 460px;
  margin-top: 10px;
  border-left: 3px solid var(--accent);
}

.showcase-source-editor textarea {
  min-height: 390px;
}

.showcase-error {
  min-height: 1.2em;
  margin-top: 10px;
}

.site-footer {
  min-height: 130px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  border-top: 1px solid var(--line-strong);
  color: var(--muted);
  font-size: 0.75rem;
}

.site-footer p {
  margin: 0;
}

.site-footer strong {
  margin-right: 14px;
  color: var(--ink);
}

.footer-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 20px;
}

.footer-links a {
  font-weight: 720;
}

@media (max-width: 1180px) {
  :root {
    --shell: min(calc(100% - 56px), 1180px);
  }

  .home-hero {
    gap: 58px;
    padding-block: 72px 86px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero-copy h1 {
    font-size: clamp(4rem, 8vw, 6.7rem);
  }

  .hero-lede {
    max-width: 39rem;
  }

  .page-intro {
    grid-template-columns: 0.38fr 1.35fr;
  }

  .page-intro-lede {
    grid-column: 2;
    max-width: 570px;
    margin-top: 8px;
  }

  .feature-row,
  .showcase-case {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .feature-copy {
    display: grid;
    grid-template-columns: 0.75fr 1fr;
    gap: 0 46px;
  }

  .feature-copy h2,
  .feature-copy > p {
    grid-column: 1;
  }

  .feature-source {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin-top: 0;
  }

  .showcase-case-header {
    position: static;
    max-width: 760px;
  }

  .showcase-case-header h2 {
    max-width: 760px;
  }
}

@media (max-width: 820px) {
  :root {
    --shell: calc(100% - 36px);
  }

  html {
    scroll-padding-top: 124px;
  }

  .nav-shell {
    min-height: 104px;
    flex-wrap: wrap;
    gap: 8px 20px;
    padding-block: 10px;
  }

  .wordmark {
    height: 38px;
  }

  .nav-links {
    width: 100%;
    order: 2;
    justify-content: flex-start;
    gap: 20px;
    overflow-x: auto;
    padding: 1px 0 5px;
  }

  .nav-links > a {
    flex: 0 0 auto;
  }

  .theme-switcher {
    margin-left: auto;
    flex: 0 0 auto;
  }

  .home-hero {
    min-height: auto;
    padding-block: 60px 72px;
  }

  .hero-copy h1 {
    font-size: clamp(3.3rem, 13vw, 5.7rem);
  }

  .hero-workbench {
    box-shadow: 7px 7px 0 var(--accent);
  }

  .workbench-heading {
    align-items: flex-start;
    flex-direction: column;
    padding: 10px;
  }

  .surface-switcher {
    align-self: stretch;
    width: 100%;
  }

  .surface-switcher button {
    flex: 1 1 0;
  }

  .diagram-stage-hero {
    min-height: 450px;
    padding-inline: 4px;
  }

  .diagram-stage-hero lines-and-arrows {
    min-width: 760px;
  }

  .hero-workbench figcaption {
    align-items: flex-start;
    flex-direction: column;
  }

  .page-intro {
    display: block;
    padding-block: 64px 58px;
  }

  .page-intro h1 {
    margin-top: 20px;
    font-size: clamp(3.3rem, 14vw, 6rem);
  }

  .page-intro-lede {
    max-width: 560px;
    margin-top: 24px;
  }

  .feature-row {
    gap: 42px;
    padding-block: 78px;
  }

  .theme-preview-grid {
    grid-template-columns: 1fr;
  }

  .feature-copy {
    display: block;
  }

  .feature-source {
    margin-top: 28px;
  }

  .showcase-contents {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .showcase-contents-heading p {
    max-width: 460px;
  }

  .showcase-case {
    padding-block: 82px;
  }

  .page-next {
    grid-template-columns: 1fr;
    align-items: start;
    padding-block: 78px;
  }

  .page-next-actions {
    justify-content: flex-start;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 36px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  :root {
    --shell: calc(100% - 28px);
  }

  .nav-github span {
    display: none;
  }

  .nav-links {
    gap: 18px;
  }

  .hero-actions,
  .page-next-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-facts {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .hero-facts li + li::before {
    content: none;
  }

  .home-principles-section {
    padding-block: 64px;
  }

  .home-principles > div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .showcase-contents-list {
    grid-template-columns: 1fr;
  }

  .showcase-contents-list li:last-child:nth-child(odd) {
    grid-column: auto;
  }

  .feature-copy h2,
  .showcase-case-header h2 {
    font-size: clamp(2.3rem, 12vw, 3.5rem);
  }

  .feature-source {
    margin-inline: -14px;
    padding-inline: 18px;
  }

  .feature-figure,
  .showcase-figure {
    min-width: 0;
  }

  .feature-diagram lines-and-arrows {
    min-width: 470px;
  }

  .showcase-stage lines-and-arrows {
    min-width: 600px;
  }

  .showcase-source-editor {
    margin-inline: -14px;
  }

  .site-footer p span {
    display: block;
    margin-top: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}