:root {
  --bg: #F3F2EF;
  --paper: #FFFFFF;
  --ink: #0E0E0E;
  --ink-soft: #2E2E2E;
  --mute: #6B6B6B;
  --line: #E2E0DA;
  --accent: #2B59FF;
  --accent-ink: #1B3FCC;
  --accent-bg: #ECF0FF;
  --go: #1F7A4D;
  --go-bg: #E6F4EC;
  --stop: #B3261E;
  --stop-bg: #FBEAE8;
  --display: 'Anton', Impact, 'Arial Narrow', sans-serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121212; --paper: #1B1B1B; --ink: #F3F2EF; --ink-soft: #D6D4CE; --mute: #9A9890;
    --line: #2E2E2E; --accent: #7D9BFF; --accent-ink: #A9BCFF; --accent-bg: #1C2340;
    --go: #6FD3A0; --go-bg: #16301F; --stop: #FF9A90; --stop-bg: #3A1A17;
  }
}
:root[data-theme="dark"] {
  --bg: #121212; --paper: #1B1B1B; --ink: #F3F2EF; --ink-soft: #D6D4CE; --mute: #9A9890;
  --line: #2E2E2E; --accent: #7D9BFF; --accent-ink: #A9BCFF; --accent-bg: #1C2340;
  --go: #6FD3A0; --go-bg: #16301F; --stop: #FF9A90; --stop-bg: #3A1A17;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); line-height: 1.6; font-size: 16px; }
a { color: var(--accent); }
.wrap { max-width: 860px; margin: 0 auto; padding: 48px 24px 120px; }

/* Header */
.kicker { font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--mute); }
h1 { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: clamp(44px, 9vw, 84px); line-height: .95; margin: 12px 0 20px; letter-spacing: .005em; }
h1 .accent { color: var(--accent); }
.lead { font-size: 19px; color: var(--ink-soft); max-width: 640px; margin: 0 0 28px; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin: 0 0 16px; }
.fact { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.fact b { display: block; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--mute); font-weight: 700; margin-bottom: 2px; }

/* Jump nav */
.jump { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0 0; }
.jump a { font-size: 13px; font-weight: 600; text-decoration: none; color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; }
.jump a:hover { border-color: var(--accent); color: var(--accent); }

/* Sections */
section { margin-top: 72px; scroll-margin-top: 24px; }
.part { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: clamp(30px, 5vw, 44px); line-height: 1; margin: 0 0 8px; }
.part-sub { color: var(--mute); margin: 0 0 28px; font-size: 16px; }
h3 { font-size: 20px; margin: 0 0 8px; line-height: 1.3; }
p { margin: 0 0 14px; }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 22px 22px 8px; margin: 0 0 16px; }

/* Loop */
.loop { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.loop li { display: grid; grid-template-columns: 36px 1fr; gap: 10px; background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.loop-n { font-family: var(--display); font-size: 28px; line-height: 1; color: var(--accent); }
.loop h3 { margin: 0 0 4px; font-size: 18px; }
.loop p { margin: 0; font-size: 15px; color: var(--ink-soft); }
.loop li.loop-back { background: var(--accent-bg); border-color: transparent; }

/* Big quote */
.big { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: clamp(28px, 5vw, 42px); line-height: 1.05; margin: 8px 0 6px; }
.big .accent { color: var(--accent); }

/* Prompt blocks */
.prompt { position: relative; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; margin: 10px 0 16px; overflow: hidden; }
.prompt-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 8px 10px 8px 14px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--paper) 85%, var(--bg)); }
.prompt-label { font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--mute); }
.prompt-label .where { color: var(--accent); }
.prompt pre { margin: 0; padding: 14px; font-family: var(--mono); font-size: 13.5px; line-height: 1.55; white-space: pre-wrap; word-wrap: break-word; color: var(--ink); }
.slot { background: var(--accent-bg); color: var(--accent-ink); border-radius: 4px; padding: 0 3px; }
.slot.filled { background: var(--go-bg); color: var(--go); }
.copy { font: inherit; font-size: 12px; font-weight: 700; color: var(--paper); background: var(--ink); border: none; border-radius: 999px; padding: 6px 14px; cursor: pointer; white-space: nowrap; }
.copy:hover { background: var(--accent); }
.copy.done { background: var(--go); }
.copy:focus-visible, .jump a:focus-visible, input:focus-visible, textarea:focus-visible, .tick:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* Expect / watch-out */
.expect { border-left: 3px solid var(--go); background: var(--go-bg); border-radius: 0 10px 10px 0; padding: 10px 14px; margin: 0 0 16px; font-size: 15px; }
.expect b, .warn b { display: block; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 2px; }
.expect b { color: var(--go); }
.warn { border-left: 3px solid var(--stop); background: var(--stop-bg); border-radius: 0 10px 10px 0; padding: 10px 14px; margin: 0 0 16px; font-size: 15px; }
.warn b { color: var(--stop); }

/* Confidence Line */
.cl { margin: 18px 0 8px; }
.cl-track { position: relative; height: 10px; border-radius: 999px; background: var(--line); margin: 34px 0 10px; }
.cl-fill { position: absolute; inset: 0 auto 0 0; width: 72%; border-radius: 999px; background: linear-gradient(90deg, var(--accent-bg), var(--accent)); }
.cl-commit { position: absolute; left: 72%; top: -26px; bottom: -8px; border-left: 2px dashed var(--ink); }
.cl-commit span { position: absolute; top: -2px; left: 6px; font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; }
.cl-ends { display: flex; justify-content: space-between; font-size: 13px; font-weight: 600; color: var(--mute); }
.cl-zones { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin-top: 18px; }
.cl-zone { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 14px; font-size: 14px; }
.cl-zone b { display: block; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin-bottom: 4px; }
.cl-zone.after b { color: var(--ink); }

/* Toy vs tool */
.tvt { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.tvt > div { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.tvt h3 { font-family: var(--display); font-weight: 400; text-transform: uppercase; font-size: 26px; }
.tvt .toy h3 { color: var(--stop); }
.tvt .tool h3 { color: var(--go); }
.tvt ul { margin: 6px 0 0; padding-left: 18px; font-size: 15px; }
.tvt li { margin: 4px 0; }

/* Steps */
.step { position: relative; background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 22px 22px 8px; margin: 0 0 16px; }
.step-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 10px; }
.step-n { font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.step-time { font-size: 12px; font-weight: 600; color: var(--mute); }
.step h3 { font-size: 22px; margin: 2px 0 0; }
.tick { display: inline-flex; align-items: center; gap: 8px; font: inherit; font-size: 13px; font-weight: 600; color: var(--mute); background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; cursor: pointer; white-space: nowrap; }
.tick::before { content: ''; width: 14px; height: 14px; border: 2px solid currentColor; border-radius: 50%; }
.tick[aria-pressed="true"] { color: var(--go); border-color: var(--go); background: var(--go-bg); }
.tick[aria-pressed="true"]::before { background: currentColor; }
.step.is-done { border-color: var(--go); }
ol.do, ul.do { padding-left: 20px; margin: 0 0 14px; }
ol.do li, ul.do li { margin: 6px 0; }

/* Builder */
.builder { display: grid; gap: 12px; margin: 6px 0 16px; }
.field label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 4px; }
.field small { display: block; font-size: 12px; color: var(--mute); margin-top: 3px; }
.field input, .field textarea { width: 100%; font: inherit; font-size: 16px; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.field textarea { resize: vertical; min-height: 64px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.out { background: var(--accent-bg); border-radius: 12px; padding: 16px; margin: 4px 0 16px; }
.out b { display: block; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); margin-bottom: 4px; }
.out p { font-size: 18px; font-weight: 600; margin: 0 0 10px; color: var(--ink); }
.out p.kill { font-size: 15px; font-weight: 500; color: var(--ink-soft); margin: 0; }
.checks { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 6px; font-size: 15px; }
.checks li { padding-left: 26px; position: relative; }
.checks li::before { content: '?'; position: absolute; left: 0; top: 1px; width: 18px; height: 18px; border-radius: 50%; background: var(--accent-bg); color: var(--accent-ink); font-size: 11px; font-weight: 800; display: grid; place-items: center; }
.reset { font: inherit; font-size: 13px; color: var(--mute); background: none; border: none; text-decoration: underline; cursor: pointer; padding: 0; }

/* Journey */
.journey { position: relative; margin: 8px 0 0; padding-left: 28px; }
.journey::before { content: ''; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.stage { position: relative; margin: 0 0 14px; }
.stage::before { content: ''; position: absolute; left: -26px; top: 18px; width: 16px; height: 16px; border-radius: 50%; background: var(--paper); border: 3px solid var(--accent); }
.stage.commit::before { background: var(--ink); border-color: var(--ink); }
.stage-card { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; }
.stage-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.stage-head h3 { margin: 0; font-size: 18px; }
.stage-tag { font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.meter { height: 6px; border-radius: 999px; background: var(--line); margin: 10px 0 12px; overflow: hidden; }
.meter i { display: block; height: 100%; border-radius: 999px; background: var(--accent); }
.stage dl { display: grid; grid-template-columns: 110px 1fr; gap: 4px 12px; margin: 0; font-size: 14px; }
.stage dt { font-weight: 700; color: var(--mute); }
.stage dd { margin: 0; color: var(--ink-soft); }

/* Present template */
.present { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.present div { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 14px; font-size: 14px; }
.present b { display: block; font-size: 15px; margin-bottom: 4px; color: var(--ink); }

/* Monday */
.monday { background: var(--ink); color: var(--bg); border-radius: 18px; padding: 28px 24px; }
.monday .part { color: var(--bg); }
.monday ol { margin: 0; padding-left: 22px; font-size: 17px; }
.monday li { margin: 8px 0; }
.monday p { color: color-mix(in srgb, var(--bg) 75%, var(--ink)); }

footer { margin-top: 64px; font-size: 13px; color: var(--mute); }

@media (max-width: 640px) {
  .wrap { padding: 32px 16px 80px; }
  .tvt, .row2, .cl-zones, .loop { grid-template-columns: 1fr; }
    .step, .card { padding: 18px 16px 6px; }
  .step-top { flex-direction: column; }
  .stage dl { grid-template-columns: 1fr; }
  .stage dt { margin-top: 6px; }
  .lead { font-size: 17px; }
}
@media print {
  .copy, .tick, .jump, .reset { display: none; }
  body { background: #fff; }
  section { break-inside: avoid-page; }
}