:root {
  --bg: #F7F4EE;
  --surface: #FFFDF9;
  --ink: #1C2330;
  --muted: #5A6170;
  --line: #E2DCD0;
  --accent: #2F5D8A;
  --accent-soft: #E6EDF4;
  --tds: #7C93AC;
  --rev: #C9A227;
  --rev-soft: #F6EFD6;
  --dispute: #A0522D;
  --dispute-soft: #F5E9E1;
  --unk: #CFC7B8;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 var(--sans); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(2.2rem, 7vw, 3.6rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.4rem, 4vw, 1.9rem); }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
a { color: var(--accent); }
section { padding: 40px 16px; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.eyebrow { font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); font-weight: 600; margin-bottom: 12px; }
.kicker { font-family: var(--sans); font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 600; margin: 0; }
.hero { padding-top: 48px; padding-bottom: 8px; }
.lede { font-size: clamp(1.05rem, 2.6vw, 1.3rem); max-width: 40em; }
.sub { color: var(--muted); font-size: .92rem; }
.note { font-size: .85rem; color: var(--muted); }
.num { text-align: right; white-space: nowrap; }

/* buttons */
.btn { font: 500 .92rem var(--sans); padding: 10px 14px; border-radius: 6px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; text-align: left; }
.btn:hover { border-color: var(--accent); }
.btn.small { padding: 6px 12px; font-size: .85rem; }
.btn:focus-visible, .tabs button:focus-visible, .term:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.linkbtn { font: inherit; color: var(--accent); background: none; border: 0; padding: 0; text-decoration: underline; cursor: pointer; }
.term { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: help; text-decoration: underline dotted var(--accent); text-underline-offset: 3px; }
.pop { position: absolute; z-index: 10; background: var(--ink); color: #fff; font-size: .85rem; line-height: 1.45; padding: 10px 12px; border-radius: 6px; box-shadow: 0 6px 20px rgba(0,0,0,.15); }

/* race */
.race-wrap { padding-top: 16px; }
.race-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px 16px; margin-bottom: 4px; }
.race-ctl { display: flex; gap: 6px; }
.progress { height: 3px; background: var(--line); border-radius: 2px; margin: 4px 0 16px; overflow: hidden; }
.progress span { display: block; height: 100%; width: 0; background: var(--accent); }
.race { display: grid; gap: 16px; }
.lane { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px; min-width: 0; }
.lane.asis { border-top: 3px solid var(--dispute); }
.lane.tobe { border-top: 3px solid var(--accent); }
.lane-h { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 2px 12px; margin-bottom: 12px; }
.lane-t { font-family: var(--serif); font-weight: 600; font-size: 1.15rem; }
.lane-sub { font-size: .8rem; color: var(--muted); }
.meter { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 8px; margin-bottom: 12px; }
.meter div { border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; min-width: 0; }
.meter span { display: block; font-size: .7rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.meter b { display: block; font-size: 1.05rem; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.meter div:first-child b { font-size: 1.35rem; }
.warn { color: var(--dispute); }
.zero { color: var(--accent); }
.feed { list-style: none; margin: 0; padding: 0; }
.feed li { display: grid; grid-template-columns: 52px 1fr; gap: 10px; padding: 10px 0; border-top: 1px solid var(--line); font-size: .9rem; }
.feed .when { font-size: .78rem; color: var(--muted); padding-top: 2px; }
.feed li.new { animation: rise .4s ease-out; }
@keyframes rise { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.tag { display: inline-block; font-size: .72rem; font-weight: 600; padding: 2px 8px; border-radius: 10px; margin-top: 6px; }
.tag.pain, .tag.disp { background: var(--dispute-soft); color: var(--dispute); }
.tag.tds, .tag.id { background: #EAEFF4; color: #3E5670; }
.tag.ok { background: var(--accent-soft); color: var(--accent); }
.tag.rev { background: var(--rev-soft); color: #7A6213; }
.feed li > div > .tag { display: table; }
.bar { display: flex; height: 10px; border-radius: 5px; overflow: hidden; background: var(--unk); }
.seg { height: 100%; transition: width .4s ease; }
.seg-unk, .k-unk { background: var(--unk); }
.seg-tds, .k-tds { background: var(--tds); }
.seg-ok, .k-ok { background: var(--accent); }
.seg-rev, .k-rev { background: var(--rev); }
.seg-disp, .k-disp { background: var(--dispute); }
.legend { list-style: none; padding: 0; margin: 8px 0 8px; display: flex; flex-wrap: wrap; gap: 2px 14px; font-size: .8rem; min-height: 1.3em; }
.legend i { display: inline-block; width: 9px; height: 9px; border-radius: 2px; margin-right: 5px; }
.verdict { margin-top: 16px; padding: 14px 16px; border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 8px 8px 0; animation: rise .4s ease-out; }
.verdict p { margin: 0; }
@media (prefers-reduced-motion: reduce) { .feed li.new, .verdict { animation: none; } .seg { transition: none; } }

/* at a glance */
.glance { padding-top: 24px; }
.glance-grid { display: grid; gap: 20px; margin: 16px 0 20px; }
.glance-grid p { margin: 0; font-size: .95rem; }
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { font-size: .82rem; padding: 5px 12px; border: 1px solid var(--accent); color: var(--accent); border-radius: 16px; background: var(--surface); }

/* try */
.try-grid { display: grid; gap: 12px; margin-top: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px; min-width: 0; }
.card > p:last-child { margin-bottom: 0; }
.param { display: block; margin-bottom: 12px; font-size: .9rem; }
.param input { display: block; width: 100%; margin-top: 6px; accent-color: var(--accent); }
.check { display: flex; gap: 8px; align-items: flex-start; font-size: .9rem; margin-bottom: 12px; }
.check input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--accent); flex: none; }
.kpi { margin: 10px 0 0; font-size: .9rem; }
.kpi b { font-size: 1.3rem; color: var(--accent); margin-right: 4px; }
.break-grid { display: grid; gap: 8px; }
.blocked:empty { display: none; }
.blocked { margin-top: 12px; border: 1px solid var(--dispute); background: var(--dispute-soft); border-radius: 6px; padding: 10px 12px; font-size: .9rem; }
.blocked b { color: var(--dispute); }
.flag { font-weight: 600; color: var(--dispute); margin: 10px 0 6px; font-size: .9rem; }
.slack { border: 1px solid var(--line); border-left: 4px solid #4A154B; border-radius: 6px; padding: 10px 12px; background: #fff; font-size: .88rem; }
.slack-h { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2px 12px; margin-bottom: 6px; }
.slack-h span { color: var(--muted); font-size: .72rem; }
.slack p { margin: 0; }
.cal { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 10px; font-size: .85rem; }
.audit { margin: 0; padding-left: 0; list-style: none; font: .76rem/1.5 var(--mono); color: var(--muted); max-height: 260px; overflow-y: auto; }
.audit li { padding: 3px 0; border-bottom: 1px dashed var(--line); }
.audit li.blk { color: var(--dispute); }

/* tables */
table { width: 100%; border-collapse: collapse; font-size: .9rem; background: var(--surface); }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { font-weight: 600; color: var(--muted); font-size: .76rem; text-transform: uppercase; letter-spacing: .05em; background: #F1ECE3; }
table.mini td { padding: 7px 0; font-size: .86rem; }
table.mini td + td { padding-left: 10px; }
tr.tot td { font-weight: 600; }
td small { display: block; color: var(--muted); font-size: .76rem; margin-top: 2px; }
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; }
.rules td:first-child, td.id { font-weight: 600; color: var(--accent); white-space: nowrap; }
.raci td:not(:first-child), .raci th:not(:first-child) { text-align: center; }
a.idlink { white-space: nowrap; }
.hl { animation: hl 2s ease-out; }
@keyframes hl { from { background: var(--rev-soft); } to { background: transparent; } }

/* why */
.signal { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 0 0 12px; }
.signal div { border-left: 2px solid var(--accent); padding-left: 10px; }
.signal b { display: block; font-size: clamp(1.1rem, 4vw, 1.6rem); font-weight: 500; color: var(--accent); }
.signal span { font-size: .8rem; color: var(--muted); }

/* spec */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin-top: 16px; overflow-x: auto; }
.tabs button { flex: 0 0 auto; font: 500 .9rem var(--sans); color: var(--muted); background: none; border: 0; border-bottom: 2px solid transparent; padding: 10px 12px; cursor: pointer; }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.pane { background: var(--surface); border: 1px solid var(--line); border-top: 0; border-radius: 0 0 8px 8px; padding: 16px; }
.pane .note { margin: 10px 0 0; }
.stories { padding-left: 20px; margin: 0; font-size: .9rem; }
.stories li { margin-bottom: 10px; }
.stories i { display: block; color: var(--muted); margin-top: 2px; }
.exports { margin: 12px 0 0; }

/* close */
.close-grid { display: grid; gap: 24px; }
.close-grid h2 { font-size: 1.25rem; }
.plain { padding-left: 18px; margin: 0; font-size: .92rem; }
.plain li { margin-bottom: 6px; }
.downloads { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 0; }
.downloads a { border: 1px solid var(--accent); padding: 10px 14px; border-radius: 6px; text-decoration: none; font-weight: 500; }
.foot { padding: 32px 16px 48px; border-top: 1px solid var(--line); font-size: .82rem; color: var(--muted); }

@media (min-width: 760px) {
  .race { grid-template-columns: 1fr 1fr; }
  .feed { min-height: 420px; }
  .glance-grid { grid-template-columns: repeat(3, 1fr); }
  .try-grid { grid-template-columns: repeat(3, 1fr); }
  .break-grid { grid-template-columns: 1fr; }
  .close-grid { grid-template-columns: 1.3fr 1fr 1fr; }
}
@media (max-width: 759px) {
  .feed li:nth-child(n+4) { display: none; }
  .audit { max-height: 180px; }
}
@media (max-width: 480px) {
  .tabs { overflow-x: visible; flex-wrap: wrap; gap: 0; }
  .tabs button { flex: 1 1 auto; padding: 10px 8px; font-size: .84rem; text-align: center; }
  .feed li { grid-template-columns: 44px 1fr; }
}

/* print: the case study PDF is generated from this page */
@media print {
  @page { size: A4; margin: 14mm 12mm; }
  body { background: #fff; font-size: 12px; }
  section { padding: 16px 0; }
  .wrap { max-width: none; padding: 0; }
  .race-ctl, .progress, .tabs, .exports, .cal, .pop, .break-grid, .blocked, #try .param, #try .check, .downloads, .linkbtn { display: none !important; }
  .race { grid-template-columns: 1fr 1fr; }
  .feed { min-height: 0; }
  .feed li { display: grid !important; }
  .feed li.new, .verdict { animation: none; }
  .glance-grid, .try-grid { grid-template-columns: repeat(3, 1fr); }
  .close-grid { grid-template-columns: 1.3fr 1fr 1fr; }
  [data-pane] { display: block !important; margin-bottom: 14px; }
  [data-pane]::before { display: block; font: 600 13px var(--serif); margin: 6px 0; }
  [data-pane="rules"]::before { content: "Business rules"; }
  [data-pane="codes"]::before { content: "Reason codes"; }
  [data-pane="trace"]::before { content: "Traceability"; }
  [data-pane="stories"]::before { content: "User stories and acceptance criteria"; }
  [data-pane="uat"]::before { content: "UAT cases"; }
  [data-pane="raci"]::before { content: "RACI"; }
  .pane { border: 0; padding: 0; }
  .audit { max-height: none; }
  .card, .lane, tr, .stories li, .glance-grid > div { break-inside: avoid; }
  #spec, #close { break-before: page; }
  .term { text-decoration: none; }
  a.idlink { color: inherit; text-decoration: none; }
}