:root {
  --ink: #1c2218;
  --paper: #eef2ea;
  --panel: #f7f9f5;
  --line: #b8c4b4;
  --accent: #2f6f4e;
  --waiting: #c47a2c;
  --active: #2b6cb0;
  --done: #4a7c59;
  --recalc: #7a5aa6;
  --muted: #5a675e;
  --harness: #dfe6dc;
  font-family: "Source Serif 4", "Iowan Old Style", Georgia, serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(ellipse 70% 45% at 0% 0%, #d8e4d2 0%, transparent 55%),
    var(--paper);
  min-height: 100vh;
}

.identity-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  padding: 0.85rem 1.25rem 0.25rem;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  font-size: 0.85rem;
}
.identity-strip a { color: var(--accent); text-decoration: none; }
.identity-strip a:hover { text-decoration: underline; }
.identity-sep { color: var(--muted); opacity: 0.7; }

.vcs-row {
  margin: 0;
  padding: 0.25rem 1.25rem 0.75rem;
}
.vcs-row a { color: var(--ink); display: inline-flex; }

.page {
  max-width: 52rem;
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
}

h1 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0.4rem 0 0.6rem;
}
.lede {
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--muted);
  max-width: 40rem;
}
.lede strong { color: var(--ink); font-weight: 600; }

.variant-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin: 1.75rem 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

.variant-tile {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 0.65rem;
  transition: border-color 160ms ease, transform 160ms ease;
}
.variant-tile:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.variant-tile img, .variant-tile .mock {
  width: 100%;
  height: auto;
  aspect-ratio: 1122 / 585;
  object-fit: contain;
  display: block;
  pointer-events: none;
  background: #dde5d8;
  border: 1px solid var(--line);
}
.variant-tile h2 {
  font-size: 1.2rem;
  margin: 0.75rem 0 0.25rem;
  font-family: "Source Serif 4", Georgia, serif;
}
.variant-tile p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.4;
}

.demo-harness {
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  border: 1px dashed color-mix(in srgb, var(--muted) 55%, transparent);
  background: var(--harness);
  padding: 0.65rem 0.85rem;
  margin: 1.25rem 0 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}
.demo-harness .label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-right: 0.35rem;
}
.demo-harness button {
  font: inherit;
  font-size: 0.8rem;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  cursor: pointer;
}
.demo-harness button:hover { background: var(--accent); color: #f5faf6; }

.facsimile-bezel {
  border: 1px solid var(--line);
  background: #1a2420;
  box-shadow: 0 16px 40px color-mix(in srgb, #1a2420 18%, transparent);
  overflow: hidden;
}
.facsimile-bezel .chrome {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.7rem;
  background: #2a3530;
  color: #d7e0d6;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  font-size: 0.78rem;
}
.facsimile-bezel .dots { display: flex; gap: 0.28rem; }
.facsimile-bezel .dots i {
  width: 0.5rem; height: 0.5rem; border-radius: 50%; background: #6a756c; display: block;
}
.facsimile-bezel .dots i:nth-child(1) { background: #e07a6a; }
.facsimile-bezel .dots i:nth-child(2) { background: #d4b35a; }
.facsimile-bezel .dots i:nth-child(3) { background: #6aae7a; }

.desk-body {
  background: #e8efe6;
  padding: 0.85rem;
  min-height: 18rem;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

.columns {
  display: flex;
  gap: 0.65rem;
  overflow-x: auto;
}
.column {
  flex: 0 0 10.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.column-head {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.column-head strong {
  display: block;
  text-transform: none;
  letter-spacing: 0;
  color: var(--ink);
  font-size: 0.85rem;
  margin-top: 0.1rem;
}

.phase {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  padding: 0.35rem 0.45rem;
  font-size: 0.78rem;
  min-height: 2rem;
  transition: min-height 280ms ease, transform 360ms ease, opacity 280ms ease;
}
.phase .meta { font-size: 0.65rem; color: var(--muted); margin-top: 0.15rem; }
.phase[data-status="waiting"] { border-left: 3px solid var(--waiting); }
.phase[data-status="active"] { border-left: 3px solid var(--active); }
.phase[data-status="done"] { border-left: 3px solid var(--done); opacity: 0.7; }
.phase[data-status="pending"] { border-left: 3px solid var(--line); }
.phase[data-status="recalculating"] { border-left: 3px solid var(--recalc); background: #f4effa; }
.phase[data-status="invalidated"] { opacity: 0.4; text-decoration: line-through; border-style: dashed; }
.phase.is-insert { animation: insertIn 420ms ease; }
@keyframes insertIn {
  from { opacity: 0; transform: translateY(-10px) scaleY(0.8); }
  to { opacity: 1; transform: none; }
}
.spinner {
  position: absolute; top: 0.35rem; right: 0.35rem;
  width: 0.75rem; height: 0.75rem;
  border: 2px solid color-mix(in srgb, var(--recalc) 35%, transparent);
  border-top-color: var(--recalc);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.variant-blurb {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--muted);
  max-width: 40rem;
  margin: 0.5rem 0 0;
}

.related {
  margin-top: 1.5rem;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  font-size: 0.85rem;
}
.related a { color: var(--accent); }