/* Poiesis website.
   Same tokens, same hairlines and same type as the app (see DESIGN.md).
   One sheet, two lighting conditions: Daylight and Backlit. Panels are flat
   and separated by hairlines. Only what floats (the app window, toasts,
   menus) takes a shadow. Ink is the only highlight. Indigo and copper appear
   only as the local and cloud signal, as in the app. */

@font-face {
  font-family: "Newsreader Variable";
  src: url("fonts/newsreader-latin-wght-normal.woff2") format("woff2-variations");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Newsreader Variable";
  src: url("fonts/newsreader-latin-wght-italic.woff2") format("woff2-variations");
  font-weight: 200 800;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("fonts/inter-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("fonts/inter-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("fonts/inter-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

/* ---------- tokens (copied from src/styles/tokens.css) ---------- */
:root {
  --canvas: #f3f5f3;
  --paper: #ffffff;
  --paper-edge: #e6eae6;
  --paper-edge-2: #b8c0b8;
  --ink: #17201c;
  --ink-muted: #5a6560;
  --ink-faint: #8a938e;
  --local: #3d4fa0;
  --cloud: #b5642e;
  --ok: #4a7a5e;
  --danger: #a8453a;

  --font-serif: "Newsreader Variable", "Newsreader", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;

  --fs-micro: 10px;
  --fs-caption: 11px;
  --fs-footnote: 12px;
  --fs-ui: 13px;
  --fs-callout: 14px;
  --fs-ui-lg: 15px;
  --fs-title: 17px;

  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius: 7px;
  --radius-lg: 10px;
  --radius-xl: 14px;
  --radius-pill: 999px;

  --fill-hover: color-mix(in srgb, var(--ink) 5%, transparent);
  --fill-press: color-mix(in srgb, var(--ink) 9%, transparent);
  --fill-selected: color-mix(in srgb, var(--ink) 8%, transparent);
  --fill-quiet: color-mix(in srgb, var(--ink) 3.5%, transparent);
  --hairline: color-mix(in srgb, var(--paper-edge-2) 70%, transparent);

  --shadow-xs: 0 1px 2px rgba(16, 24, 20, 0.05);
  --shadow-sm: 0 1px 2px rgba(16, 24, 20, 0.04), 0 2px 10px rgba(16, 24, 20, 0.05);
  --shadow-float: 0 0 0 0.5px rgba(16, 24, 20, 0.06), 0 10px 30px rgba(16, 24, 20, 0.12),
    0 2px 8px rgba(16, 24, 20, 0.06);
  --shadow-modal: 0 0 0 0.5px rgba(16, 24, 20, 0.08), 0 24px 70px rgba(16, 24, 20, 0.2),
    0 6px 16px rgba(16, 24, 20, 0.08);
  --ring: 0 0 0 3px color-mix(in srgb, var(--local) 22%, transparent);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-pop: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 140ms;
  --dur: 220ms;
  --dur-slow: 360ms;

  --page: 1080px;
  --gutter: 32px;
}

[data-mode="dark"] {
  --canvas: #0d100e;
  --paper: #141814;
  --paper-edge: #232a24;
  --paper-edge-2: #333c34;
  --ink: #e3e9e0;
  --ink-muted: #8f9a90;
  --ink-faint: #6a756c;
  --local: #8c97e8;
  --cloud: #d6884a;
  --ok: #7fb596;
  --danger: #d6776b;

  --fill-hover: color-mix(in srgb, var(--ink) 6%, transparent);
  --fill-press: color-mix(in srgb, var(--ink) 10%, transparent);
  --fill-selected: color-mix(in srgb, var(--ink) 9%, transparent);
  --fill-quiet: color-mix(in srgb, var(--ink) 4%, transparent);
  --hairline: color-mix(in srgb, var(--paper-edge-2) 80%, transparent);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3), 0 2px 10px rgba(0, 0, 0, 0.25);
  --shadow-float: 0 0 0 0.5px rgba(255, 255, 255, 0.06), 0 12px 34px rgba(0, 0, 0, 0.5),
    0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-modal: 0 0 0 0.5px rgba(255, 255, 255, 0.07), 0 28px 80px rgba(0, 0, 0, 0.6),
    0 6px 16px rgba(0, 0, 0, 0.35);
  --ring: 0 0 0 3px color-mix(in srgb, var(--local) 30%, transparent);
}

/* ---------- base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 400 var(--fs-ui-lg) / 1.6 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
/* The mode switch crossfades colours once, then gets out of the way. */
html.mode-swap *,
html.mode-swap *::before,
html.mode-swap *::after {
  transition:
    background-color var(--dur-slow) var(--ease-in-out),
    border-color var(--dur-slow) var(--ease-in-out),
    color var(--dur-slow) var(--ease-in-out),
    fill var(--dur-slow) var(--ease-in-out),
    stroke var(--dur-slow) var(--ease-in-out) !important;
}
img,
svg {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
}
button {
  font: inherit;
  color: inherit;
}
p {
  margin: 0;
}
h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
}
code,
kbd,
pre {
  font-family: var(--font-mono);
}
:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--local) 60%, transparent);
  outline-offset: 2px;
  border-radius: var(--radius);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
  white-space: nowrap;
}
.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 100;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  font-size: var(--fs-ui);
  text-decoration: none;
}
.skip:focus {
  top: 12px;
}

.wrap {
  width: 100%;
  max-width: calc(var(--page) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--paper-edge-2);
}
.topbar .wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 52px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 500;
  letter-spacing: -0.02em;
}
.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: 8px;
}
.nav a {
  display: inline-flex;
  align-items: center;
  height: 30px;
  padding: 0 10px;
  border-radius: var(--radius);
  font-size: var(--fs-ui);
  color: var(--ink-muted);
  text-decoration: none;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}
.nav a:hover {
  background: var(--fill-hover);
  color: var(--ink);
}
.nav a:active {
  background: var(--fill-press);
}
.topbar-end {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

/* ---------- controls ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 36px;
  padding: 0 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: var(--fs-ui);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}
.btn:active {
  transform: scale(0.97);
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-xs);
}
.btn-primary:hover {
  background: color-mix(in srgb, var(--ink) 88%, var(--paper));
}
.btn-secondary {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper-edge-2);
  box-shadow: var(--shadow-xs);
}
.btn-secondary:hover {
  border-color: var(--ink-faint);
  background: color-mix(in srgb, var(--ink) 2.5%, var(--paper));
}
.btn-sm {
  height: 30px;
  padding: 0 12px;
}
.btn-icon {
  width: 36px;
  padding: 0;
}
.btn-icon.btn-sm {
  width: 30px;
}
.btn-text {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-size: var(--fs-ui);
  color: var(--ink-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--dur-fast) var(--ease-out);
}
.btn-text:hover {
  color: var(--ink);
}
.btn svg {
  width: 16px;
  height: 16px;
}

/* One way to pick one of a few: a track with the chosen segment lifted out. */
.segmented {
  display: inline-flex;
  gap: 2px;
  padding: 2px;
  height: 32px;
  background: var(--fill-press);
  border-radius: var(--radius);
}
.segmented button {
  height: 28px;
  padding: 0 12px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--fs-ui);
  color: var(--ink-muted);
  cursor: pointer;
  white-space: nowrap;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out);
}
.segmented button:hover {
  color: var(--ink);
}
.segmented button[aria-pressed="true"],
.segmented button[aria-selected="true"] {
  background: var(--paper);
  color: var(--ink);
  font-weight: 500;
  box-shadow: var(--shadow-xs);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 22px;
  padding: 0 9px;
  background: var(--fill-quiet);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  font-size: var(--fs-footnote);
  color: var(--ink-muted);
  white-space: nowrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  height: 18px;
  padding: 0 7px;
  border-radius: var(--radius-pill);
  background: var(--fill-press);
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.sig {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex: none;
}
.sig.local {
  background: var(--local);
}
.sig.cloud {
  background: var(--cloud);
}
.sig.ok {
  background: var(--ok);
}
.sig.danger {
  background: var(--danger);
}
kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius-xs);
  font-size: var(--fs-caption);
  color: var(--ink-muted);
  background: var(--paper);
}

/* ---------- the sheet ---------- */
.sheet {
  max-width: 1240px;
  margin: 0 auto;
  background: var(--paper);
  border-left: 1px solid var(--paper-edge-2);
  border-right: 1px solid var(--paper-edge-2);
}
.band {
  padding: 104px 0;
  border-top: 1px solid var(--paper-edge-2);
}
.band:first-child {
  border-top: 0;
}
.band.canvas {
  background: var(--canvas);
}

.eyebrow {
  display: block;
  margin-bottom: 14px;
  font-size: var(--fs-caption);
  font-weight: 600;
  color: var(--ink-faint);
}
.h2 {
  font-size: clamp(30px, 3.8vw, 46px);
  line-height: 1.1;
  max-width: 18ch;
}
.lede {
  margin-top: 18px;
  max-width: 54ch;
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.6;
  color: var(--ink-muted);
}
.prose {
  margin-top: 14px;
  max-width: 54ch;
  color: var(--ink-muted);
}
.prose strong {
  color: var(--ink);
  font-weight: 500;
}
.split {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 64px;
  align-items: center;
}
.split.flip > :first-child {
  order: 2;
}
.points {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--paper-edge);
}
.points li {
  display: grid;
  grid-template-columns: 6px 1fr;
  column-gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--paper-edge);
  font-size: var(--fs-callout);
  color: var(--ink-muted);
}
.points li::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: 8px;
  border-radius: 50%;
  border: 1px solid var(--ink-faint);
}
.points strong {
  color: var(--ink);
  font-weight: 500;
}

/* ---------- hero ---------- */
.hero {
  padding: 88px 0 72px;
}
.hero-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}
.hero h1 {
  font-size: clamp(42px, 7vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.03em;
  max-width: 13ch;
}
.hero h1 em {
  font-style: italic;
  font-weight: 400;
}
.hero .lede {
  font-size: 21px;
  max-width: 50ch;
  margin-top: 0;
}
.cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
}
.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 4px;
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}
.hero-facts span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero-facts span::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--ink-faint);
}
.stage {
  margin-top: 64px;
}
.stage-foot {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}

/* ---------- the real window, as a picture ----------
   The hero is the app itself (app/index.html, drawn by the app's own CSS) in
   an iframe at the app's default window size, scaled to fit the column. */
.shot {
  position: relative;
  width: 100%;
  background: var(--canvas);
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-modal);
  overflow: hidden;
}
.shot-frame {
  width: 1180px;
  height: 800px;
  transform-origin: 0 0;
}
.shot iframe {
  display: block;
  width: 1180px;
  height: 800px;
  border: 0;
  background: var(--canvas);
}
.js .shot {
  overflow: hidden;
}
.shot:not(.fit) {
  overflow-x: auto;
}

.card {
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.card + .card {
  margin-top: 8px;
}
.card-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 32px;
  padding: 0 12px;
  border-bottom: 1px solid var(--paper-edge);
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}
.card-head .t {
  font-weight: 500;
  color: var(--ink);
}
.card-head .r {
  margin-left: auto;
}
/* a toast, as in the app: paper, hairline, floats */
.toast {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  background: var(--paper);
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float);
  font-size: var(--fs-ui);
  max-width: 520px;
}
.toast .mk {
  flex: none;
  align-self: center;
  width: 6px;
  height: 6px;
  background: var(--ink-faint);
  transform: rotate(45deg);
}
.toast .tx {
  flex: 1;
}
.toast .undo {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-size: var(--fs-ui);
  color: var(--ink-muted);
  text-decoration: underline;
}
.toast .undo:hover {
  color: var(--ink);
}
/* ---------- the mark ---------- */
.poiesis-mark {
  flex: none;
  color: var(--ink);
  overflow: visible;
}
.poiesis-mark .mark-membrane {
  stroke: currentColor;
  opacity: 0.55;
  vector-effect: non-scaling-stroke;
}
.poiesis-mark .mark-nucleus,
.poiesis-mark .mark-orbit {
  fill: currentColor;
}
.poiesis-mark .mark-orbit {
  opacity: 0.7;
}
.poiesis-mark.stage-0 .mark-membrane {
  opacity: 0.35;
  stroke-dasharray: 2 3;
}
.poiesis-mark .mark-membrane {
  stroke-width: 1px;
}
.mark-lab .poiesis-mark .mark-membrane {
  stroke-width: 1.5px;
}
.mark-lab .poiesis-mark.stage-0 .mark-membrane {
  stroke-dasharray: 4 6;
}
.poiesis-mark.state-active .mark-nucleus {
  animation: mark-breathe 2.4s ease-in-out infinite;
}
.poiesis-mark.state-reflecting .mark-orbits {
  transform-origin: 12px 12px;
  animation: mark-orbit 1.8s linear infinite;
}
.poiesis-mark.state-healing .mark-membrane {
  animation: mark-flicker 1.5s ease-in-out infinite;
}
.poiesis-mark.state-listening .mark-nucleus {
  animation: mark-breathe-slow 5s ease-in-out infinite;
}
@keyframes mark-breathe {
  0%,
  100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}
@keyframes mark-orbit {
  to {
    transform: rotate(360deg);
  }
}
@keyframes mark-flicker {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 0.15;
  }
}
@keyframes mark-breathe-slow {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 0.85;
  }
}
@keyframes breathe {
  0%,
  100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}
@keyframes step-running {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

/* ---------- idea ---------- */
.cells {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 56px;
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.cell {
  padding: 22px 20px 24px;
  border-left: 1px solid var(--paper-edge-2);
  background: var(--paper);
  transition: background-color var(--dur) var(--ease-out);
}
.cell:first-child {
  border-left: 0;
}
.cell:hover {
  background: var(--fill-quiet);
}
.cell .n {
  font-size: var(--fs-caption);
  font-variant-numeric: tabular-nums;
  color: var(--ink-faint);
}
.cell h3 {
  margin: 28px 0 8px;
  font-size: 24px;
}
.cell p {
  font-size: var(--fs-callout);
  color: var(--ink-muted);
}
.sub-h {
  font-size: clamp(28px, 3.2vw, 38px);
  line-height: 1.12;
}
.etymology {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: center;
}
.panel {
  background: var(--paper);
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius-lg);
}
.mark-lab {
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 320px;
  padding: 0;
  overflow: hidden;
}
.mark-lab .view {
  display: grid;
  place-items: center;
  padding: 36px 24px 20px;
  background: var(--canvas);
  border-bottom: 1px solid var(--paper-edge-2);
}
.mark-lab .view svg {
  width: 132px;
  height: 132px;
}
.mark-lab .controls {
  display: grid;
  gap: 12px;
  padding: 16px;
}
.mark-lab .row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.mark-lab .lab {
  width: 64px;
  font-size: var(--fs-footnote);
  font-weight: 600;
  color: var(--ink-faint);
}
.mark-lab .say {
  min-height: 44px;
  font-size: var(--fs-callout);
  color: var(--ink-muted);
}
.mark-lab .say b {
  color: var(--ink);
  font-weight: 500;
}

/* ---------- memory: file tree ---------- */
.files {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  overflow: hidden;
  min-height: 360px;
}
.tree {
  padding: 12px 8px;
  border-right: 1px solid var(--paper-edge-2);
  background: var(--canvas);
  font-family: var(--font-mono);
  font-size: var(--fs-footnote);
}
.tree .dir {
  padding: 4px 8px;
  color: var(--ink-faint);
}
.tree button {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 28px;
  padding: 0 8px;
  background: none;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: inherit;
  color: var(--ink-muted);
  text-align: left;
  cursor: pointer;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}
.tree button.indent {
  padding-left: 22px;
}
.tree button:hover {
  background: var(--fill-hover);
  color: var(--ink);
}
.tree button[aria-selected="true"] {
  background: var(--fill-selected);
  color: var(--ink);
}
.file-pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.file-pane .path {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 36px;
  padding: 0 16px;
  border-bottom: 1px solid var(--paper-edge);
  font-family: var(--font-mono);
  font-size: var(--fs-footnote);
  color: var(--ink-muted);
}
.file-pane .path .who {
  margin-left: auto;
  font-family: var(--font-sans);
  font-size: var(--fs-caption);
  color: var(--ink-faint);
}
.file-pane pre {
  flex: 1;
  margin: 0;
  padding: 16px;
  overflow: auto;
  font-size: var(--fs-footnote);
  line-height: 1.7;
  color: var(--ink);
  white-space: pre-wrap;
}
.file-pane .note {
  padding: 12px 16px;
  border-top: 1px solid var(--paper-edge);
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}
.tok-dim {
  color: var(--ink-faint);
}

/* ---------- control: autonomy ---------- */
.demo {
  display: grid;
  gap: 0;
  overflow: hidden;
}
.demo .sec {
  padding: 16px;
}
.demo .sec + .sec {
  border-top: 1px solid var(--paper-edge);
}
.demo .cap {
  margin-bottom: 8px;
  font-size: var(--fs-caption);
  font-weight: 600;
  color: var(--ink-faint);
}
.said {
  padding: 12px 14px;
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  font-size: var(--fs-callout);
}
.said small {
  display: block;
  margin-top: 2px;
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}
.outcome {
  min-height: 108px;
  display: grid;
  align-content: center;
  background: var(--canvas);
}
.outcome > * {
  animation: rise-in var(--dur-slow) var(--ease-out);
}
.outcome .toast {
  box-shadow: var(--shadow-float);
}
.proposal {
  padding: 12px 14px;
  background: var(--paper);
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  font-size: var(--fs-ui);
}
.proposal .acts {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}
.quiet-note {
  padding: 12px 14px;
  background: var(--fill-quiet);
  border-radius: var(--radius-lg);
  font-size: var(--fs-ui);
  color: var(--ink-muted);
}
.undone {
  text-decoration: line-through;
  text-decoration-thickness: 1px;
  color: var(--ink-faint);
}

/* ---------- plates: the ink drawings that sit beside a section's text ---------- */
.feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}
.feature.flip > .plate {
  order: -1;
}
.below {
  margin-top: 56px;
}
.plate {
  margin: 0;
  max-width: 500px;
  justify-self: end;
}
.feature.flip > .plate {
  justify-self: start;
}
.plate img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--canvas);
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius-lg);
}
[data-mode="dark"] .plate img {
  filter: brightness(0.82) contrast(1.05);
}
.plate figcaption {
  margin-top: 10px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--fs-callout);
  color: var(--ink-faint);
}

/* ---------- repair ---------- */
.two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 56px;
}
.pane-title {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  padding: 0 16px;
  border-bottom: 1px solid var(--paper-edge);
  font-size: var(--fs-footnote);
  font-weight: 600;
  color: var(--ink-muted);
}
.pane-title .r {
  margin-left: auto;
  font-weight: 400;
  color: var(--ink-faint);
}
.lines {
  list-style: none;
  margin: 0;
  padding: 0;
}
.lines li {
  display: grid;
  grid-template-columns: 6px minmax(0, 1fr) auto;
  column-gap: 12px;
  align-items: start;
  padding: 12px 16px;
  font-size: var(--fs-ui);
}
.lines li + li {
  border-top: 1px solid var(--paper-edge);
}
.lines li .sig {
  margin-top: 7px;
}
.lines small {
  display: block;
  margin-top: 2px;
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}
.lines code {
  font-size: var(--fs-footnote);
}
.lines .acts {
  display: flex;
  gap: 12px;
}
.pane-foot {
  padding: 14px 16px;
  border-top: 1px solid var(--paper-edge);
  background: var(--canvas);
}
.pane-foot .toast {
  box-shadow: var(--shadow-sm);
}
.after {
  margin-top: 16px;
  font-size: var(--fs-callout);
  color: var(--ink-muted);
  max-width: 62ch;
}

/* ---------- agents ---------- */
.stack {
  display: grid;
  gap: 8px;
}
.plan-item {
  display: grid;
  grid-template-columns: 14px 1fr;
  column-gap: 9px;
  align-items: start;
  padding: 3px 12px;
  font-size: var(--fs-footnote);
  line-height: 1.5;
}
.plan-item:first-of-type {
  padding-top: 9px;
}
.plan-item:last-of-type {
  padding-bottom: 10px;
}
.box {
  width: 12px;
  height: 12px;
  margin-top: 3px;
  border: 1px solid var(--ink-faint);
  border-radius: var(--radius-xs);
  position: relative;
}
.plan-item.done .box {
  background: var(--ink);
  border-color: var(--ink);
}
.plan-item.done .box::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.5px;
  width: 3px;
  height: 6px;
  border: solid var(--paper);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(40deg);
}
.plan-item.doing .box {
  border-color: var(--ink);
}
.plan-item.doing .box::after {
  content: "";
  position: absolute;
  inset: 2px;
  right: 50%;
  background: var(--ink);
  border-radius: 1px;
}
.plan-item.done .tx {
  color: var(--ink-faint);
}
.plan-item.doing .tx {
  font-weight: 600;
}
.plan-item.todo .tx {
  color: var(--ink-muted);
}
.fleet-row {
  display: grid;
  grid-template-columns: 20px max-content minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: var(--fs-ui);
}
.fleet-row + .fleet-row {
  border-top: 1px solid var(--paper-edge);
}
.fleet-row .lead {
  display: grid;
  place-items: center;
}
.fleet-row .who {
  font-weight: 500;
}
.fleet-row .doing {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ink-muted);
}
.fleet-row .clock {
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}
.fleet-row .acts {
  display: flex;
  gap: 2px;
}
.fleet-row .acts button {
  padding: 2px 6px;
  background: none;
  border: none;
  border-radius: var(--radius);
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
  cursor: pointer;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}
.fleet-row .acts button:hover {
  color: var(--ink);
  background: var(--fill-hover);
}
.orbdot {
  position: relative;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid var(--ink-faint);
}
.orbdot::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--ink);
  animation: breathe 2.4s ease-in-out infinite;
}
.steer {
  margin: 0 12px 10px 40px;
}
.steer input {
  width: 100%;
  height: 30px;
  padding: 0 10px;
  background: var(--paper);
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius);
  font: inherit;
  font-size: var(--fs-ui);
  color: var(--ink);
}
.steer input::placeholder {
  color: var(--ink-faint);
}
.steer input:focus {
  outline: none;
  border-color: var(--ink-faint);
  box-shadow: var(--ring);
}
.steer-note {
  margin: 0 12px 10px 40px;
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}

/* ---------- private ---------- */
.picker {
  overflow: hidden;
}
.picker .grp {
  padding: 8px 8px 4px;
}
.picker .grp + .grp {
  border-top: 1px solid var(--paper-edge);
}
.picker .grp-t {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  font-size: var(--fs-caption);
  font-weight: 600;
  color: var(--ink-faint);
}
.picker .opt {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 32px;
  padding: 0 8px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-ui);
}
.picker .opt.on {
  background: var(--fill-selected);
  font-weight: 500;
}
.picker .opt .fit {
  margin-left: auto;
  font-size: var(--fs-footnote);
  font-weight: 400;
  color: var(--ink-faint);
}
.offlist {
  margin-top: 56px;
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.offlist .head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--paper-edge-2);
  background: var(--canvas);
}
.offlist .head h3 {
  font-size: 20px;
}
.offlist .head p {
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}
.offrows {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.offrow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 16px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--paper-edge);
}
.offrow:nth-child(odd) {
  border-right: 1px solid var(--paper-edge);
}
.offrow:nth-last-child(-n + 2) {
  border-bottom: 0;
}
.offrow b {
  font-weight: 500;
  font-size: var(--fs-ui);
}
.offrow p {
  grid-column: 1;
  font-size: var(--fs-footnote);
  color: var(--ink-muted);
}
.promises {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--paper-edge-2);
}
.promise {
  padding: 22px 24px 0 0;
}
.promise + .promise {
  padding-left: 24px;
  border-left: 1px solid var(--paper-edge);
}
.promise h4 {
  font-size: 20px;
  margin-bottom: 6px;
}
.promise p {
  font-size: var(--fs-callout);
  color: var(--ink-muted);
}

/* ---------- reach ---------- */
.trio {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 56px;
}
.tile {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    transform var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out);
}
.tile:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.tile .art {
  display: grid;
  align-content: center;
  min-height: 188px;
  padding: 18px;
  background: var(--canvas);
  border-bottom: 1px solid var(--paper-edge-2);
}
.tile .txt {
  padding: 18px 18px 20px;
}
.tile h3 {
  font-size: 22px;
  margin-bottom: 6px;
}
.tile p {
  font-size: var(--fs-callout);
  color: var(--ink-muted);
}
.media-wait {
  display: grid;
  place-items: center;
  gap: 10px;
  aspect-ratio: 4 / 3;
  background: var(--fill-quiet);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  font-size: var(--fs-footnote);
  color: var(--ink-muted);
  text-align: center;
  padding: 14px;
}
.media-wait .mk {
  display: flex;
  align-items: center;
  gap: 8px;
}
.media-wait .bar {
  width: 120px;
  height: 2px;
  background: var(--paper-edge);
  border-radius: 1px;
  overflow: hidden;
}
.media-wait .bar::after {
  content: "";
  display: block;
  width: 40%;
  height: 100%;
  background: var(--ink);
  animation: slide 2.4s var(--ease-in-out) infinite;
}
@keyframes slide {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(260%);
  }
}
.codebox {
  margin: 0;
  padding: 12px 14px;
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  font-size: var(--fs-footnote);
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre;
  color: var(--ink);
}
.codebox .k {
  color: var(--ink-faint);
}

/* ---------- code ---------- */
.diff {
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--fs-footnote);
}
.diff-head {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 40px;
  padding: 0 14px;
  border-bottom: 1px solid var(--paper-edge);
  font-family: var(--font-sans);
  font-size: var(--fs-footnote);
}
.diff-head b {
  font-weight: 500;
}
.diff-head .r {
  margin-left: auto;
  display: flex;
  gap: 10px;
}
.diff-file {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 32px;
  padding: 0 14px;
  background: var(--canvas);
  border-bottom: 1px solid var(--paper-edge);
  color: var(--ink-muted);
}
.diff-file .cnt {
  margin-left: auto;
  font-family: var(--font-sans);
  font-size: var(--fs-caption);
  color: var(--ink-faint);
}
.ln {
  display: grid;
  grid-template-columns: 36px 36px 16px minmax(0, 1fr);
  min-height: 22px;
  line-height: 22px;
  white-space: pre;
}
.ln i {
  font-style: normal;
  text-align: right;
  padding-right: 8px;
  font-size: var(--fs-caption);
  color: var(--ink-faint);
  user-select: none;
}
.ln .sgn {
  text-align: center;
  color: var(--ink-faint);
}
.ln.add {
  background: color-mix(in srgb, var(--ok) 12%, transparent);
}
.ln.del {
  background: color-mix(in srgb, var(--danger) 10%, transparent);
}
.ln.add .sgn {
  color: var(--ok);
}
.ln.del .sgn {
  color: var(--danger);
}
.run-result {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 34px;
  padding: 0 14px;
  border-top: 1px solid var(--paper-edge);
  font-family: var(--font-sans);
  font-size: var(--fs-footnote);
  color: var(--ink-muted);
}

/* ---------- status ---------- */
.ledger {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--paper-edge-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.ledger > div {
  padding: 22px 24px 8px;
}
.ledger > div + div {
  border-left: 1px solid var(--paper-edge-2);
  background: var(--canvas);
}
.ledger h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  margin-bottom: 10px;
}
.ledger ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.ledger li {
  display: grid;
  grid-template-columns: 6px 1fr;
  column-gap: 12px;
  padding: 11px 0;
  border-top: 1px solid var(--paper-edge);
  font-size: var(--fs-callout);
  color: var(--ink-muted);
}
.ledger li .sig {
  margin-top: 8px;
}
.ledger li b {
  color: var(--ink);
  font-weight: 500;
}
.ledger > div + div li .sig {
  background: none;
  border: 1px solid var(--ink-faint);
}

/* ---------- start ---------- */
.start {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 64px;
  align-items: start;
}
.steps {
  list-style: none;
  counter-reset: s;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--paper-edge);
}
.steps li {
  counter-increment: s;
  display: grid;
  grid-template-columns: 28px 1fr;
  padding: 14px 0;
  border-bottom: 1px solid var(--paper-edge);
  color: var(--ink-muted);
  font-size: var(--fs-callout);
}
.steps li::before {
  content: counter(s);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
  padding-top: 2px;
}
.steps b {
  color: var(--ink);
  font-weight: 500;
}
.term {
  overflow: hidden;
}
.term .path {
  display: flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-bottom: 1px solid var(--paper-edge);
  background: var(--canvas);
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}
.term pre {
  margin: 0;
  padding: 16px 16px 18px;
  font-size: var(--fs-ui);
  line-height: 1.9;
  overflow-x: auto;
}
.term .k {
  color: var(--ink-faint);
}
.req {
  width: 100%;
  margin-top: 24px;
  border-collapse: collapse;
  font-size: var(--fs-footnote);
}
.req td {
  padding: 9px 0;
  border-top: 1px solid var(--paper-edge);
  vertical-align: top;
  color: var(--ink-muted);
}
.req td:first-child {
  width: 150px;
  color: var(--ink);
  font-weight: 500;
}

/* ---------- download: one card per system ---------- */
.trio.dl {
  margin-top: 32px;
}
.dl .txt {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
}
.dl h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 0;
}
.dl .cta {
  margin-top: 0;
}
.dl .fine {
  margin-top: auto;
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}
/* The visitor's own system, once script.js has guessed it. */
.dl .tile.here {
  border-color: var(--ink-faint);
}
.dl-all {
  margin-top: 20px;
  font-size: var(--fs-footnote);
}

/* ---------- faq ---------- */
.faq {
  margin-top: 40px;
  border-top: 1px solid var(--paper-edge-2);
}
.faq details {
  border-bottom: 1px solid var(--paper-edge-2);
}
.faq summary {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 60px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.015em;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary::after {
  content: "";
  margin-left: auto;
  flex: none;
  width: 8px;
  height: 8px;
  border: solid var(--ink-faint);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg) translateY(-2px);
  transition: transform var(--dur) var(--ease-out);
}
.faq details[open] summary::after {
  transform: rotate(-135deg) translateY(-2px);
}
.faq summary:hover::after {
  border-color: var(--ink);
}
.faq .ans {
  max-width: 64ch;
  padding: 0 0 22px;
  color: var(--ink-muted);
  animation: fade-in var(--dur) var(--ease-out);
}

/* ---------- footer ---------- */
.foot {
  background: var(--canvas);
  border-top: 1px solid var(--paper-edge-2);
}
.foot .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
  padding-top: 32px;
  padding-bottom: 40px;
  font-size: var(--fs-footnote);
  color: var(--ink-faint);
}
.foot .brand {
  color: var(--ink);
  font-size: 19px;
}
.foot nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
}
.foot a {
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}
.foot a:hover {
  color: var(--ink);
}
.foot nav a {
  display: inline-flex;
  align-items: center;
}
.foot nav svg {
  width: 16px;
  height: 16px;
}
.closing {
  text-align: left;
}
.closing h2 {
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.05;
  max-width: 16ch;
}

/* ---------- arrivals ---------- */
@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes pop-up {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateX(-50%);
  }
}
.js [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
}
.js [data-reveal].in {
  opacity: 1;
  transform: none;
}
/* ---------- small screens ---------- */
@media (max-width: 960px) {
  .nav {
    display: none;
  }
  .band {
    padding: 72px 0;
  }
  .split,
  .feature,
  .start {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }
  .split.flip > :first-child,
  .feature.flip > .plate {
    order: 0;
  }
  .plate,
  .feature.flip > .plate {
    justify-self: start;
    width: 100%;
  }
  .cells {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .cell:nth-child(3) {
    border-left: 0;
  }
  .cell:nth-child(n + 3) {
    border-top: 1px solid var(--paper-edge-2);
  }
  .trio,
  .two {
    grid-template-columns: minmax(0, 1fr);
  }
  .promises {
    grid-template-columns: minmax(0, 1fr);
  }
  .promise,
  .promise + .promise {
    padding: 18px 0;
    border-left: 0;
    border-bottom: 1px solid var(--paper-edge);
  }
  .ledger {
    grid-template-columns: minmax(0, 1fr);
  }
  .ledger > div + div {
    border-left: 0;
    border-top: 1px solid var(--paper-edge-2);
  }



}
@media (max-width: 640px) {
  :root {
    --gutter: 18px;
  }
  .hero {
    padding: 56px 0 48px;
  }
  .hero .lede {
    font-size: 18px;
  }
  .stage {
    margin-top: 44px;
  }
  .brand {
    font-size: 19px;
  }
  .topbar .wrap {
    gap: 12px;
  }
  .topbar .btn {
    display: none;
  }



  .files {
    grid-template-columns: minmax(0, 1fr);
  }
  .tree {
    border-right: 0;
    border-bottom: 1px solid var(--paper-edge-2);
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
  }
  .tree .dir {
    display: none;
  }
  .tree button,
  .tree button.indent {
    width: auto;
    padding: 0 10px;
  }
  .cells {
    grid-template-columns: minmax(0, 1fr);
  }
  .cell,
  .cell:nth-child(3) {
    border-left: 0;
  }
  .cell + .cell {
    border-top: 1px solid var(--paper-edge-2);
  }
  .offrows {
    grid-template-columns: minmax(0, 1fr);
  }
  .offrow:nth-child(odd) {
    border-right: 0;
  }
  .offrow:nth-last-child(2) {
    border-bottom: 1px solid var(--paper-edge);
  }
  .fleet-row {
    grid-template-columns: 20px max-content minmax(0, 1fr);
  }
  .fleet-row .clock,
  .fleet-row .acts {
    display: none;
  }
  .stage-foot {
    flex-direction: column;
  }
  .ln {
    grid-template-columns: 28px 28px 14px minmax(0, 1fr);
  }
  .etymology {
    grid-template-columns: minmax(0, 1fr);
  }
  .segmented {
    flex-wrap: wrap;
    height: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0s !important;
  }
  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}