@font-face {
  font-family: "Bricolage Grotesque";
  src: url("/fonts/bricolage-grotesque-latin.v2.woff2") format("woff2");
  font-weight: 500 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Bricolage Fallback";
  src: local("Helvetica Neue"), local("HelveticaNeue"), local("Arial");
  size-adjust: 90%;
  ascent-override: 103.3%;
  descent-override: 30%;
  line-gap-override: 0%;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/fonts/jetbrains-mono-latin-400.v2.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/fonts/jetbrains-mono-latin-500.v2.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* Snowfield by day, Polar night after dark. Signal marks only what you can click. Writer hues are the app's. */
:root {
  --ground: #f7fbfd;
  --surface: #eaf1f8;
  --ink: #111b28;
  --muted: #4f5c6c;
  --rule: #d0d8e1;
  --signal: #0064b9;
  --on-signal: #f9fcfe;
  --claude: #c65d26;
  --codex: #6c4ab3;
  --git: #615a00;
  --unknown: #717171;
  --wash: 15%;
  --shadow: 0 1px 2px rgb(17 27 40 / 0.18), 0 16px 40px -16px rgb(17 27 40 / 0.18);

  --display: "Bricolage Grotesque", "Bricolage Fallback", system-ui, sans-serif;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --doc: ui-serif, "New York", Georgia, serif;

  --ease-container: linear(0, 0.109, 0.309, 0.501, 0.656, 0.77, 0.849, 0.903, 0.938, 0.961, 0.976, 0.985, 0.991, 1);
  --ease-spatial: linear(0, 0.056, 0.179, 0.325, 0.467, 0.593, 0.699, 0.783, 0.847, 0.896, 0.931, 0.956, 0.973, 0.984, 0.992, 1);

  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #070f19;
    --surface: #0f1926;
    --ink: #e1e9ef;
    --muted: #a1b4c3;
    --rule: #283442;
    --signal: #66c2fb;
    --on-signal: #070f19;
    --claude: #eb8656;
    --codex: #a58bec;
    --git: #a9a24b;
    --unknown: #9e9e9e;
    --wash: 24%;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 16px 40px -16px rgb(0 0 0 / 0.55);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ground: #070f19;
  --surface: #0f1926;
  --ink: #e1e9ef;
  --muted: #a1b4c3;
  --rule: #283442;
  --signal: #66c2fb;
  --on-signal: #070f19;
  --claude: #eb8656;
  --codex: #a58bec;
  --git: #a9a24b;
  --unknown: #9e9e9e;
  --wash: 24%;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 16px 40px -16px rgb(0 0 0 / 0.55);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 1.0625rem/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  caret-color: var(--signal);
  accent-color: var(--signal);
}
::selection { background: color-mix(in oklch, var(--signal) 24%, var(--ground)); color: var(--ink); }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { font-family: var(--display); color: var(--ink); text-wrap: balance; }
p { text-wrap: pretty; }
code { font-family: var(--mono); font-size: 0.875em; }
a { color: inherit; text-decoration-line: underline; text-decoration-color: var(--rule); text-decoration-thickness: 1px; text-underline-offset: 3px; transition: color 120ms ease-out, text-decoration-color 120ms ease-out; }
a:hover { text-decoration-color: var(--signal); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 4px; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.wrap { width: 100%; max-width: 72rem; margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2.5rem); }
.mono { font: 400 0.8125rem/1.6 var(--mono); }

/* Wordmark: the dew line, then the word */
.wordmark { display: inline-flex; align-items: baseline; gap: 0.45em; font: 640 1.25rem/1 var(--display); font-variation-settings: "opsz" 32; letter-spacing: -0.02em; color: var(--ink); text-decoration: none; }
.wordmark-small { font-size: 1.0625rem; }
.mark { position: relative; flex: none; width: 14px; height: 5px; transform: translateY(calc(-0.264em + 2.5px)); }
.mark::before { content: ""; position: absolute; left: 0; right: 0; top: 1.75px; height: 1.5px; border-radius: 1px; background: var(--muted); }
.mark::after { content: ""; position: absolute; top: 0; left: calc(70% - 2.5px); width: 5px; height: 5px; border-radius: 50%; background: var(--signal); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  height: 2.75rem; padding: 0 1.125rem; border-radius: 8px;
  background: var(--signal); color: var(--on-signal);
  font: 600 0.9375rem/1 var(--sans); text-decoration: none; white-space: nowrap;
  transition: background-color 120ms ease-out;
}
.btn:hover { background: color-mix(in oklch, var(--signal) 84%, var(--ink)); }
.btn:active { background: color-mix(in oklch, var(--signal) 72%, var(--ink)); }
.btn-small { height: 2rem; padding: 0 0.75rem; border-radius: 6px; font-size: 0.8125rem; }

/* Header */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: color-mix(in srgb, var(--ground) 92%, transparent); border-bottom: 1px solid transparent; transition: border-color 120ms ease-out; }
.top.scrolled { border-bottom-color: var(--rule); }
.top-in { display: flex; align-items: center; justify-content: space-between; height: 3.5rem; }
.top nav { display: flex; align-items: center; gap: 1.25rem; font-size: 0.875rem; }
.nav-link { color: var(--muted); text-decoration-color: transparent; }
.nav-link:hover { color: var(--ink); }

/* Hero */
.hero { padding-block: clamp(3rem, 8vw, 6rem) 0; }
.hero h1 { max-width: 16ch; font-size: clamp(2.5rem, 1.6rem + 3.6vw, 4.25rem); line-height: 1.02; font-weight: 620; font-variation-settings: "opsz" 96; letter-spacing: -0.03em; }
.lead { max-width: 34em; margin-top: 1.25rem; font-size: 1.3125rem; line-height: 1.45; color: var(--muted); }
.get { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; margin-top: 2rem; }
.brew { display: flex; align-items: center; gap: 0.75rem; min-width: 0; max-width: 100%; height: 2.75rem; padding: 0 0.375rem 0 0.875rem; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface); }
.brew code { min-width: 0; font: 400 0.8125rem/1 var(--mono); color: var(--ink); white-space: nowrap; overflow-x: auto; scrollbar-width: none; }
.copy { flex: none; height: 2rem; min-width: 4.5rem; padding: 0 0.75rem; border: 1px solid var(--rule); border-radius: 6px; background: var(--ground); color: var(--ink); font: 500 0.8125rem/1 var(--sans); cursor: pointer; transition: border-color 120ms ease-out; }
.copy:hover { border-color: var(--muted); }
.meta { margin-top: 0.875rem; color: var(--muted); }

/* The stage: the window over a surface band that runs edge to edge behind its lower two thirds */
.stage { position: relative; margin-top: 2.5rem; padding-bottom: clamp(2.5rem, 5vw, 3.5rem); }
.stage::before { content: ""; position: absolute; inset: 30% 0 0; background: var(--surface); }
.landing { position: relative; }
.landing figcaption { margin-top: 0.75rem; font-size: 0.875rem; color: var(--muted); text-align: right; }

/* The window */
.win { --w: var(--claude); background: var(--ground); border: 1px solid var(--rule); border-radius: 12px; box-shadow: var(--shadow); overflow: hidden; }
.win-bar { display: flex; align-items: center; gap: 1rem; height: 2.75rem; padding: 0 0.875rem; background: var(--surface); border-bottom: 1px solid var(--rule); font-size: 0.8125rem; color: var(--muted); }
.lights { display: flex; gap: 0.5rem; }
.lights i { width: 0.75rem; height: 0.75rem; border-radius: 50%; background: color-mix(in oklch, var(--muted) 35%, var(--surface)); }
.crumbs { display: flex; align-items: center; gap: 0.4rem; min-width: 0; white-space: nowrap; }
.crumbs b { font-weight: 500; color: var(--ink); }
.chev { width: 0.375rem; height: 0.625rem; flex: none; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.pill { margin-left: auto; display: inline-flex; align-items: center; gap: 0.45rem; height: 1.625rem; padding: 0 0.625rem; border-radius: 999px; background: var(--ground); border: 1px solid var(--rule); font: 500 0.75rem/1 var(--mono); color: var(--ink); }
.pill .num { color: var(--muted); }
.dot { display: inline-block; flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--w); }

.dew { position: relative; max-width: 38rem; height: 6px; margin: 0.75rem auto 0; }
.dew::before { content: ""; position: absolute; left: 0; right: 0; top: 2.5px; height: 1px; background: var(--rule); }
.dew-view { position: absolute; top: 2px; left: 0; width: 28%; height: 2px; border-radius: 1px; background: var(--signal); }
.bead { position: absolute; top: 0; width: 6px; height: 6px; margin-left: -3px; border-radius: 50%; background: var(--w); }
.bead-1 { left: 18%; }
.bead-2 { left: 64%; }

.doc { position: relative; max-width: 38rem; margin: 0 auto; padding: 2.25rem 0 2.75rem; font: 400 17px/1.6 var(--doc); color: var(--ink); }
.doc > * + * { margin-top: 0.9em; }
.doc-h { font: 600 1.625rem/1.2 var(--doc); }
.caret { display: inline-block; width: 2px; height: 1.15em; margin: 0 1px -0.2em; border-radius: 1px; background: var(--signal); }
.changed { position: relative; }
.tick { position: absolute; left: -1.25rem; top: 0.2em; bottom: 0.2em; width: 3px; border-radius: 2px; background: var(--w); }
.who { position: absolute; left: calc(100% + 1.5rem); top: 0.2em; display: inline-flex; align-items: center; gap: 0.4rem; white-space: nowrap; font: 400 11px/1.6 var(--mono); color: var(--muted); }

/* Marks: an insertion is a wash and a 2 px underline; a deletion is struck and dimmed */
ins.ins, del.ghost { text-decoration: none; }
.ins { background: color-mix(in oklch, var(--w) var(--wash), transparent); box-shadow: inset 0 -2px 0 var(--w); border-radius: 2px; padding-inline: 1px; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.ghost { color: color-mix(in oklch, var(--ink) 42%, transparent); background: linear-gradient(var(--w), var(--w)) left 58% / 100% 1px no-repeat; }

/* The change bar */
.cbar { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; width: fit-content; max-width: 100%; margin-top: 1.5rem; padding: 0.3125rem 0.3125rem 0.3125rem 0.875rem; border-radius: 999px; background: var(--surface); border: 1px solid var(--rule); font: 400 0.8125rem/1 var(--sans); color: var(--muted); }
.cbar-who { display: inline-flex; align-items: center; gap: 0.45rem; color: var(--ink); }
.step { display: inline-flex; align-items: center; gap: 0.5rem; font-variant-numeric: tabular-nums; }
.keys { display: inline-flex; gap: 0.375rem; }
.k { display: inline-flex; align-items: center; height: 1.75rem; padding: 0 0.75rem; border-radius: 999px; border: 1px solid var(--rule); color: var(--ink); font: 500 0.8125rem/1 var(--sans); }
.k.keep { background: var(--ink); border-color: var(--ink); color: var(--ground); font-weight: 600; }

/* Sections */
.sec { padding-block: clamp(3.5rem, 7vw, 5rem) 0; }
.hero + .sec { padding-top: clamp(3rem, 6vw, 4.5rem); }
.sec-in { padding-top: clamp(2rem, 4vw, 2.75rem); border-top: 1px solid var(--rule); }
h2 { font-size: clamp(1.625rem, 1.3rem + 1.2vw, 2.25rem); line-height: 1.1; font-weight: 600; font-variation-settings: "opsz" 48; letter-spacing: -0.02em; }
h3 { font-size: 1.3125rem; line-height: 1.25; font-weight: 580; font-variation-settings: "opsz" 24; letter-spacing: -0.01em; }

.cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 2.5rem; }
.col { padding-inline: 2rem; }
.col:first-child { padding-left: 0; }
.col:last-child { padding-right: 0; }
.col + .col { border-left: 1px solid var(--rule); }
.col p { margin-top: 0.625rem; max-width: 36em; }
.spec { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1.125rem; min-height: 2.25rem; margin: 1.25rem 0 0; }
.chip { display: inline-flex; align-items: center; gap: 0.4rem; font: 500 0.8125rem/1.6 var(--mono); color: var(--ink); }
.chip span { text-decoration: underline 2px var(--w); text-underline-offset: 4px; }
.w-claude { --w: var(--claude); }
.w-codex { --w: var(--codex); }
.w-git { --w: var(--git); }
.w-unknown { --w: var(--unknown); }
.w-unknown span { text-decoration-style: dashed; }
.w-unknown .dot { background: transparent; box-shadow: inset 0 0 0 1.5px var(--w); }

.split { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: 1.25rem 3.5rem; }
.split-body { display: grid; gap: 1rem; max-width: 36em; align-content: start; padding-top: 0.25rem; }
.facts { font: 600 1.0625rem/1.5 var(--sans); color: var(--ink); }
.features .sep { color: var(--muted); }
.features kbd { font: inherit; }
.term { margin: 0.5rem 0 0; padding: 1rem 1.125rem; border-radius: 8px; background: var(--surface); overflow-x: auto; font: 400 0.8125rem/1.75 var(--mono); color: var(--ink); scrollbar-width: thin; scrollbar-color: var(--rule) transparent; }
.term code { font-size: inherit; }
.term .p, .term .c { color: var(--muted); }
.term .p { user-select: none; }

/* Close */
.close { padding-block: 6rem 4rem; }
.close-line { font: 620 clamp(2rem, 1.5rem + 2vw, 3rem)/1.05 var(--display); font-variation-settings: "opsz" 96; letter-spacing: -0.025em; }
.close .get { margin-top: 1.75rem; }

/* Footer */
.foot { background: var(--surface); font-size: 0.875rem; line-height: 1.5; color: var(--muted); }
.foot-in { display: grid; gap: 0.75rem; padding-block: 2rem 2.5rem; }
.foot-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem 2rem; margin-bottom: 0.5rem; }
.foot-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; }
.foot a:not(.wordmark) { color: var(--muted); text-decoration-color: transparent; }
.foot a:not(.wordmark):hover { color: var(--ink); text-decoration-color: var(--signal); }
.foot p a:not(.wordmark) { text-decoration-color: var(--rule); }

@media (min-width: 60rem) {
  .doc { font-size: 20px; max-width: 34rem; padding-block: 3rem 3.5rem; }
  .doc-h { font-size: 1.875rem; }
  .dew { max-width: 34rem; }
}
@media (max-width: 60rem) {
  .who { display: none; }
}
@media (max-width: 56rem) {
  .cols { grid-template-columns: minmax(0, 1fr); margin-top: 1.5rem; }
  .col, .col:first-child, .col:last-child { padding: 1.75rem 0; }
  .col + .col { border-left: 0; border-top: 1px solid var(--rule); }
  .col:last-child { padding-bottom: 0; }
  .split { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 40rem) {
  body { font-size: 1rem; }
  .nav-link { display: none; }
  .lead { font-size: 1.1875rem; }
  .doc { font-size: 15px; padding: 1.5rem 1rem 1.75rem 1.75rem; }
  .doc-h { font-size: 1.375rem; }
  .tick { left: -0.875rem; }
  .cbar { border-radius: 14px; gap: 0.625rem 0.875rem; padding: 0.5rem 0.5rem 0.5rem 0.75rem; }
  .close { padding-block: 4.5rem 3.5rem; }
}
@media (max-width: 30rem) {
  .lights { display: none; }
  .get .btn { width: 100%; }
  .brew { width: 100%; height: auto; flex-wrap: wrap; gap: 0.5rem; padding: 0.5rem; }
  .brew code { flex: 1 0 100%; padding: 0.25rem 0.375rem; }
  .copy { width: 100%; }
}

/* The change lands once, when the window is half on screen. Without motion or script, the final state is drawn. */
@media (prefers-reduced-motion: no-preference) {
  .landing .a-drop { animation: drop 200ms var(--ease-spatial) 400ms both; }
  .landing .a-strike { animation: strike 300ms ease-out 400ms both; }
  .landing .a-fade { animation: fade 200ms ease-out 600ms both; }
  .landing .a-rise { animation: rise 300ms var(--ease-container) 850ms both; }
  @media (scripting: enabled) {
    .landing:not(.play) [class*="a-"] { animation-play-state: paused; }
  }
}
@keyframes drop { from { opacity: 0; transform: translateY(-6px); } }
@keyframes fade { from { opacity: 0; } }
@keyframes strike { from { color: var(--ink); background-size: 0% 1px; } }
@keyframes rise { from { opacity: 0; transform: translateY(6px) scale(0.98); } }