@font-face { font-family: "Bricolage"; font-style: normal; font-weight: 400 700; font-display: swap; src: url(/f/bricolage.woff2) format("woff2"); }
@font-face { font-family: "Plex Mono"; font-style: normal; font-weight: 400; font-display: swap; src: url(/f/plex-400.woff2) format("woff2"); }

:root {
  color-scheme: light;
  --ground: #eef1f5;
  --surface: #ffffff;
  --ink: #14181f;
  --muted: #5b6575;
  --line: #d5dbe4;
  --agent: #2f55d4;
  --operator: #d9531e;
  --operator-soft: #fbe8df;
  --done: #2f8a5b;
  --display: "Bricolage", "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --mono: "Plex Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --ground: #101318;
    --surface: #181c23;
    --ink: #e8ebf0;
    --muted: #97a1b2;
    --line: #2a303b;
    --agent: #7b97ff;
    --operator: #ff8a57;
    --operator-soft: #3a2219;
    --done: #5cc48f;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ground: #101318;
  --surface: #181c23;
  --ink: #e8ebf0;
  --muted: #97a1b2;
  --line: #2a303b;
  --agent: #7b97ff;
  --operator: #ff8a57;
  --operator-soft: #3a2219;
  --done: #5cc48f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 400 17px/1.55 var(--display);
  padding-inline: max(18px, env(safe-area-inset-left, 0px));
  padding-block: env(safe-area-inset-top, 0px) env(safe-area-inset-bottom, 0px);
  -webkit-font-smoothing: antialiased;
}

.top, main, .foot { max-width: 72rem; margin-inline: auto; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 1.25rem; }
.brand { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.25rem; letter-spacing: -0.02em; }
.glyph { width: 1.4rem; height: 1.4rem; fill: var(--agent); }
.glyph rect:first-child { fill: var(--operator); }
.status { display: inline-flex; align-items: center; gap: 0.5rem; font: 400 12px var(--mono); letter-spacing: 0.06em; color: var(--muted); text-transform: uppercase; }
.status i { width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--operator); }

main { display: grid; gap: 5rem; padding-block: 2rem 4rem; }

.hero { display: grid; gap: 1.25rem; max-width: 46rem; }
h1 { margin: 0; font-size: clamp(2.2rem, 5.2vw, 3.9rem); line-height: 1.04; letter-spacing: -0.035em; font-weight: 700; text-wrap: balance; font-variation-settings: "opsz" 96; }
.lede { margin: 0; font-size: 1.2rem; color: var(--muted); max-width: 38rem; text-wrap: pretty; }

.demo { display: grid; grid-template-columns: minmax(0, 0.95fr) auto minmax(0, 1.55fr); gap: 1rem; align-items: start; }

.pane { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; min-width: 0; }
.pane-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 0.75rem 1rem; border-bottom: 1px solid var(--line); font: 400 13px var(--mono); color: var(--muted); }
.pane-head button { font: 400 12px var(--mono); color: var(--agent); background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: 0.25rem 0.75rem; cursor: pointer; }
.pane-head button:hover { border-color: var(--agent); }

.log { list-style: none; margin: 0; padding: 0.5rem 0; font: 400 13px/1.5 var(--mono); }
.log li { display: grid; grid-template-columns: 3.2rem 4.6rem 1fr; gap: 0.25rem; padding: 0.45rem 1rem; border-left: 3px solid transparent; transition: background 0.2s, border-color 0.2s; cursor: default; }
.log time { color: var(--muted); font-variant-numeric: tabular-nums; }
.log b { font-weight: 400; color: var(--agent); }
.log li.op b { color: var(--operator); }
.log li.lit { background: color-mix(in srgb, var(--agent) 9%, transparent); border-left-color: var(--agent); }
.log li.op.lit { background: color-mix(in srgb, var(--operator) 10%, transparent); border-left-color: var(--operator); }
.log li.dim { opacity: 0.35; }

.arrow { display: grid; place-items: center; align-self: center; }
.arrow svg { width: 3rem; height: 1.5rem; fill: none; stroke: var(--muted); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

.board { display: grid; grid-template-columns: repeat(4, minmax(9.5rem, 1fr)); gap: 0.75rem; padding: 0.9rem; overflow-x: auto; background: color-mix(in srgb, var(--surface) 55%, var(--ground)); }
.col { display: grid; align-content: start; gap: 0.6rem; }
.col h3 { margin: 0 0 0.15rem; display: flex; justify-content: space-between; font: 400 12px var(--mono); letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); }
.col h3 em { font-style: normal; font-variant-numeric: tabular-nums; }
.col.need h3 { color: var(--operator); }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 0.7rem 0.75rem; display: grid; gap: 0.5rem; transition: transform 0.25s, box-shadow 0.25s, opacity 0.3s, border-color 0.2s; }
.card p { margin: 0; font-size: 0.95rem; line-height: 1.3; font-weight: 500; }
.card footer { display: flex; justify-content: space-between; gap: 0.5rem; flex-wrap: wrap; font: 400 11px var(--mono); color: var(--muted); }
.card footer span:first-child { color: var(--agent); }
.card.ask { background: var(--operator-soft); border-color: color-mix(in srgb, var(--operator) 45%, var(--line)); }
.card.thread { border-style: dashed; }
.card.done p { color: var(--muted); text-decoration: line-through; text-decoration-color: var(--done); }
.card.lit { border-color: var(--agent); box-shadow: 0 6px 18px -8px color-mix(in srgb, var(--agent) 60%, transparent); transform: translateY(-2px); }
.card.ask.lit { border-color: var(--operator); box-shadow: 0 6px 18px -8px color-mix(in srgb, var(--operator) 60%, transparent); }
.card.hidden { opacity: 0; transform: translateY(6px); }

h2 { margin: 0; font-size: clamp(1.6rem, 3vw, 2.2rem); letter-spacing: -0.025em; line-height: 1.1; font-weight: 700; }

.steps { display: grid; gap: 2rem; }
.steps ol { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; counter-reset: step; }
.steps li { counter-increment: step; display: grid; gap: 0.5rem; align-content: start; border-top: 2px solid var(--ink); padding-top: 1rem; }
.steps li::before { content: counter(step); font: 400 13px var(--mono); color: var(--muted); }
.steps h3, .points h3 { margin: 0; font-size: 1.2rem; letter-spacing: -0.01em; line-height: 1.25; }
.steps p, .points p { margin: 0; color: var(--muted); max-width: 32rem; }

.points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.25rem 3rem; }
.points div { display: grid; gap: 0.4rem; align-content: start; }

.close { display: grid; gap: 0.6rem; padding: 2.5rem; border-radius: 18px; background: var(--ink); color: var(--ground); }
.close p { margin: 0; color: color-mix(in srgb, var(--ground) 72%, transparent); }

.foot { display: flex; justify-content: space-between; gap: 1rem; padding-block: 1.5rem 2.5rem; border-top: 1px solid var(--line); font: 400 12px var(--mono); color: var(--muted); }

button:focus-visible, .brand:focus-visible, .board:focus-visible { outline: 2px solid var(--agent); outline-offset: 3px; }

@media (max-width: 900px) {
  .demo { grid-template-columns: minmax(0, 1fr); }
  .arrow svg { transform: rotate(90deg); }
  .steps ol { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
}

@media (max-width: 600px) {
  main { gap: 3.5rem; }
  .points { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .log li { grid-template-columns: 3rem 1fr; }
  .log li span { grid-column: 1 / -1; }
  .close { padding: 1.75rem; }
}

@media (prefers-reduced-motion: reduce) {
  .card, .log li { transition: none; }
}