/* Tellstone — one stylesheet for every page. The site is laid out as a lab
   report: a bordered sheet, numbered parts, monospace throughout. */
/* IBM Plex Mono (SIL Open Font License), latin subset, served from this site. */
@font-face { font-family: "IBM Plex Mono"; font-weight: 400; font-display: swap; src: url("./fonts/ibm-plex-mono-400.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-weight: 500; font-display: swap; src: url("./fonts/ibm-plex-mono-500.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-weight: 600; font-display: swap; src: url("./fonts/ibm-plex-mono-600.woff2") format("woff2"); }

:root {
  --bg: #efe0d3;
  --panel: #e5d0be;
  --text: #2b1b14;
  --muted: #7d6558;
  --line: #d3baa5;
  --accent: #a4502e;
  --on-accent: #fbf3ec;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Code", Consolas, monospace;
  --sheet: 1180px;
  --pad: 30px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { background: var(--bg); scroll-behavior: smooth; scroll-padding-top: 24px; }
body {
  margin: 0;
  padding: 56px 20px 0;
  background: var(--bg);
  color: var(--text);
  font: 400 14.5px/1.6 var(--mono);
  -webkit-font-smoothing: antialiased;
}
/* Paper grain. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  opacity: 0.55;
  mix-blend-mode: multiply;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .17  0 0 0 0 .11  0 0 0 0 .08  0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent); }
::selection { background: var(--accent); color: var(--on-accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
p { margin: 0; }
code, kbd { font: inherit; padding: 1px 6px; background: var(--panel); }

.sheet { max-width: var(--sheet); margin: 0 auto; border: 1px solid var(--text); }
ts-masthead, ts-footer, ts-key-note { display: block; }
ts-key-note > .part { border-bottom: 1px solid var(--text); }

/* ── Masthead ── */
.mast { display: grid; grid-template-columns: 1fr 380px; border-bottom: 1px solid var(--text); }
.mast-id { padding: 26px var(--pad); }
.mast-id a { text-decoration: none; }
.wordmark { display: flex; align-items: center; gap: 7px; font: 600 30px/1 var(--mono); letter-spacing: 0.14em; }
.wordmark img { display: block; width: 37px; height: 40px; }
.kind { margin-top: 10px; font-size: 12.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.mast-meta { border-left: 1px solid var(--text); display: flex; flex-direction: column; justify-content: center; }
.kv { display: grid; grid-template-columns: 130px 1fr; padding: 9px 20px; font-size: 13px; }
.kv + .kv { border-top: 1px solid var(--line); }
.kv > span { padding-top: 2px; font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.kv > b { font-weight: 400; }

.tabs { display: grid; grid-template-columns: repeat(8, 1fr); border-bottom: 1px solid var(--text); }
.tabs a {
  display: flex; align-items: baseline; gap: 12px;
  padding: 14px 16px;
  font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.tabs a + a { border-left: 1px solid var(--text); }
.tabs a i { font-style: normal; color: var(--muted); }
.tabs a:hover { background: var(--panel); color: var(--text); }
.tabs a[aria-current] { background: var(--text); color: var(--bg); }
.tabs a[aria-current] i { color: inherit; opacity: 0.6; }

/* ── Title block ── */
.title { display: grid; grid-template-columns: 1fr 300px; align-items: end; gap: 40px; padding: 74px var(--pad) 66px; border-bottom: 1px solid var(--text); }
.title.plain { display: block; padding: 58px var(--pad) 52px; }
h1 { margin: 0; font: 500 clamp(34px, 5.4vw, 62px)/1.06 var(--mono); letter-spacing: -0.035em; }
.title.plain h1 { font-size: clamp(30px, 4.4vw, 46px); }
.mark { background: linear-gradient(var(--accent), var(--accent)) no-repeat 0 0 / 100% 100%; color: var(--on-accent); padding: 0 12px; white-space: nowrap; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.lede { margin-top: 26px; max-width: 640px; font-size: 16px; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

.btn {
  display: inline-block; padding: 13px 20px; border: 1px solid var(--text);
  background: var(--text); color: var(--bg);
  font: 600 13.5px/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none; cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn.line { background: none; color: var(--text); }
.btn.line:hover { background: var(--text); border-color: var(--text); color: var(--bg); }
.btn:disabled { opacity: 0.45; cursor: default; }

.stamp {
  justify-self: end; transform: rotate(-7deg);
  padding: 16px 22px; border: 3px double var(--accent); color: var(--accent);
  text-align: center; font: 600 22px/1.1 var(--mono); letter-spacing: 0.16em; white-space: nowrap;
}
.stamp small { display: block; margin-top: 8px; font: 400 11px/1 var(--mono); letter-spacing: 0.12em; }
.stamp.muted { border-color: var(--muted); color: var(--muted); }

/* ── Parts ── */
.part { display: grid; grid-template-columns: 210px 1fr; border-bottom: 1px solid var(--text); }
.sheet > .part:last-child { border-bottom: 0; }
.lab { padding: 28px var(--pad); border-right: 1px solid var(--text); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; }
.lab b { display: block; margin-bottom: 10px; font: 600 26px/1 var(--mono); letter-spacing: 0; }
.lab small { display: block; margin-top: 8px; font-size: 11.5px; color: var(--muted); letter-spacing: 0.08em; }
.con { padding: 26px var(--pad) 30px; min-width: 0; }
.con > * + * { margin-top: 16px; }
h2 { margin: 0; font: 600 19px/1.3 var(--mono); letter-spacing: -0.01em; }
h3 { margin: 0; font: 600 15.5px/1.4 var(--mono); }
.fine { font-size: 13.5px; color: var(--muted); }
.cap { font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.prose p { max-width: 76ch; }
.prose p + p, .prose p + ul, .prose ul + p { margin-top: 12px; }
.prose ul { margin: 0; padding-left: 20px; max-width: 76ch; }
.prose li + li { margin-top: 6px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); }
.steps > div { padding-right: 26px; }
.steps > div + div { padding-left: 26px; border-left: 1px solid var(--line); }
.steps .cap { margin-bottom: 10px; }
.steps.five { grid-template-columns: repeat(5, 1fr); }
.steps.five > div { padding-right: 18px; }
.steps.five > div + div { padding-left: 18px; }
.steps.five h3 { font-size: 14.5px; }
.steps.five p + p { margin-top: 10px; }
.steps p { margin-top: 6px; font-size: 13.5px; color: var(--muted); }

/* ── Tables ── */
.scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { padding: 0 16px 10px 0; text-align: left; font: 400 11.5px/1.3 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
td { padding: 12px 16px 12px 0; border-top: 1px solid var(--line); vertical-align: top; }
th:last-child, td:last-child { padding-right: 0; }
tbody tr { transition: background 0.12s; }
tbody tr:hover { background: color-mix(in srgb, var(--panel) 55%, transparent); }
.r { text-align: right; }
.nw { white-space: nowrap; }
.dim { color: var(--muted); }

.vd { font-weight: 600; letter-spacing: 0.08em; white-space: nowrap; }
.vd::before { display: inline-block; width: 1.4em; }
.vd.inconsistent::before { content: "✕"; }
.vd.consistent::before { content: "✓"; }
.vd.inconclusive::before { content: "?"; }
.vd.consistent, .vd.inconclusive { color: var(--muted); }

/* One cell per 5% share: twenty cells for twenty samples. */
.cells { display: inline-grid; grid-template-columns: repeat(20, 1fr); gap: 2px; width: 100%; max-width: 260px; vertical-align: middle; }
.cells i { height: 16px; background: var(--line); transition: background 0.25s; transition-delay: calc(var(--i) * 22ms); }
.cells.in i.on { background: var(--accent); }
.cells.ref.in i.on { background: var(--muted); }

/* ── Question picker ── */
.picker { display: flex; flex-wrap: wrap; gap: 6px; }
.picker button {
  padding: 8px 12px; border: 1px solid var(--line); background: none; color: var(--muted);
  font: 500 12px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.picker button:hover { border-color: var(--text); color: var(--text); }
.picker button[aria-pressed="true"] { border-color: var(--text); background: var(--text); color: var(--bg); }
.quote { font: 500 22px/1.25 var(--mono); letter-spacing: -0.02em; }

/* ── Forms ── */
.pair { display: grid; grid-template-columns: 1fr 1fr; }
.pair > fieldset + fieldset { border-left: 1px solid var(--line); padding-left: 26px; }
.pair > fieldset:first-child { padding-right: 26px; }
fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
legend { padding: 0; margin-bottom: 14px; font: 600 15.5px/1.3 var(--mono); }
legend i { font-style: normal; color: var(--accent); margin-right: 10px; }
label { display: block; margin-top: 12px; font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
textarea { resize: vertical; min-height: 120px; line-height: 1.5; }
input, select, textarea {
  display: block; width: 100%; margin-top: 6px; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 0; background: color-mix(in srgb, var(--bg) 60%, #fff);
  color: var(--text); font: 400 14px/1.3 var(--mono); letter-spacing: 0; text-transform: none;
  transition: border-color 0.15s;
}
input::placeholder { color: color-mix(in srgb, var(--muted) 65%, transparent); }
input:hover, select:hover, textarea:hover { border-color: var(--muted); }
textarea::placeholder { color: color-mix(in srgb, var(--muted) 65%, transparent); }
input:focus, select:focus, textarea:focus { outline: 0; border-color: var(--text); box-shadow: inset 0 -2px 0 var(--accent); }
.controls { display: flex; flex-wrap: wrap; align-items: end; gap: 16px; }
.controls label { margin: 0; }
.controls select { width: auto; min-width: 190px; }
.controls .push { margin-left: auto; display: flex; gap: 10px; }

.meter { height: 16px; display: grid; grid-template-columns: repeat(40, 1fr); gap: 2px; }
.meter i { background: var(--line); }
.meter i.on { background: var(--accent); }

.verdict { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 30px; }
.verdict .stamp { font-size: 26px; }
.signals { display: grid; grid-template-columns: minmax(220px, max-content) 1fr; gap: 0; }
.signals > * { padding: 10px 16px 10px 0; border-top: 1px solid var(--line); margin: 0; }
.signals dt { font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); padding-top: 13px; }
.signals dd { overflow-wrap: anywhere; }
.flag { color: var(--accent); font-weight: 600; }

/* ── Contents grid (docs) ── */
.toc { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 26px; margin: 0; padding: 0; list-style: none; counter-reset: toc; }
.toc li { counter-increment: toc; border-top: 1px solid var(--line); }
.toc a { display: flex; gap: 14px; padding: 10px 0; text-decoration: none; }
.toc a::before { content: "§" counter(toc); color: var(--muted); min-width: 2.4em; }

/* ── Atlas ── */
.matrix th, .matrix td { padding: 9px 10px; border-top: 1px solid var(--line); white-space: nowrap; }
.matrix thead th { border-top: 0; text-align: right; }
.matrix tbody th { font: 400 13.5px/1.3 var(--mono); letter-spacing: 0; text-transform: none; color: var(--text); text-align: left; }
.matrix td { text-align: right; font-size: 13px; background: color-mix(in srgb, var(--accent) var(--heat, 0%), transparent); }
.matrix td.self { box-shadow: inset 0 0 0 1px var(--text); color: var(--muted); }
.matrix tbody tr:hover { background: none; }
.finger { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px 26px; }
.finger .answer { margin: 6px 0 8px; font: 500 20px/1.2 var(--mono); letter-spacing: -0.02em; overflow-wrap: anywhere; }
.finger .cells { max-width: none; }
.finger .fine { margin-top: 6px; font-size: 12.5px; }

/* ── The map ── */
.part.wide { grid-template-columns: 1fr; }
.part.wide > .con { padding: 0; }
.part.wide > .con > * + * { margin-top: 0; }
.map-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 22px; padding: 22px var(--pad) 18px; }
.map-head .cap b { font: 600 26px/1 var(--mono); letter-spacing: 0; color: var(--text); margin-right: 12px; }
.map-foot { padding: 16px var(--pad) 24px; }

.map { display: grid; grid-template-columns: minmax(0, 1fr) 310px; border-top: 1px solid var(--text); border-bottom: 1px solid var(--text); background: var(--bg); }
.map-stage { position: relative; min-width: 0; background: color-mix(in srgb, var(--bg) 62%, #fff 10%); overflow: hidden; }
.map-stage svg { display: block; width: 100%; height: auto; touch-action: none; cursor: grab; user-select: none; }
.map-stage svg.dragging { cursor: grabbing; }
.map .paper { fill: none; }
.map .contours path { fill: none; stroke: var(--accent); stroke-width: 1; vector-effect: non-scaling-stroke; opacity: calc(0.1 + var(--level) * 0.055); }
.map .kin line { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 2 4; vector-effect: non-scaling-stroke; opacity: 0.55; }
.map .regions text { font: 600 15px var(--mono); letter-spacing: 0.5em; fill: var(--text); opacity: 0.16; pointer-events: none; transition: opacity 0.3s; }
.map svg.close .regions text { opacity: 0.07; }
.map text { font: 400 11px var(--mono); fill: var(--text); }
.map .ring { fill: color-mix(in srgb, var(--accent) 9%, transparent); stroke: var(--accent); stroke-width: 1; stroke-dasharray: 3 3; vector-effect: non-scaling-stroke; opacity: 0; transition: opacity 0.2s; pointer-events: none; }
.map svg.close .ring, .map .pt.on .ring, .map-legend .ring { opacity: 1; }
.map .pt { cursor: pointer; outline: none; transition: opacity 0.25s; animation: map-in 0.5s ease-out both; animation-delay: calc(var(--i) * 14ms + 120ms); }
.map .pt .mk { fill: var(--muted); stroke: color-mix(in srgb, var(--bg) 70%, #fff); stroke-width: 1.5; paint-order: stroke; transition: fill 0.15s; }
.map .pt.core .mk { fill: var(--text); }
.map .pt .name { paint-order: stroke; stroke: color-mix(in srgb, var(--bg) 70%, #fff); stroke-width: 4px; stroke-linejoin: round; fill: var(--muted); pointer-events: none; }
.map .pt.core .name { fill: var(--text); }
.map .pt.quiet .name { display: none; }
.map .pt:hover .mk, .map .pt.on .mk, .map .pt:focus-visible .mk { fill: var(--accent); }
.map .pt.on .name { font-weight: 600; fill: var(--text); }
.map .pt.dim { opacity: 0.3; }
.map .links line { stroke: var(--accent); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.map .trail { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-linejoin: round; vector-effect: non-scaling-stroke; opacity: 0.55; }
.map .ghost .cross { stroke: var(--accent); stroke-width: 2; }
.map .ghost .pulse { fill: color-mix(in srgb, var(--accent) 16%, transparent); stroke: var(--accent); stroke-width: 1.5; animation: map-pulse 1.3s ease-out infinite; }
.map .ghost .name { fill: var(--accent); font-weight: 600; paint-order: stroke; stroke: color-mix(in srgb, var(--bg) 70%, #fff); stroke-width: 4px; }
@keyframes map-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes map-pulse { from { transform: scale(0.5); opacity: 1; } to { transform: scale(1.5); opacity: 0; } }

.map-card { position: absolute; left: 16px; top: 16px; display: grid; gap: 4px; padding: 12px 14px; border: 1px solid var(--text); background: var(--bg); font-size: 11px; letter-spacing: 0.06em; color: var(--muted); pointer-events: none; }
.map-card b { font: 600 12px var(--mono); letter-spacing: 0.18em; color: var(--text); }
.map-tools { position: absolute; right: 16px; top: 16px; display: grid; border: 1px solid var(--text); background: var(--bg); }
.map-tools button { width: 36px; height: 36px; border: 0; background: none; color: var(--text); font: 500 17px/1 var(--mono); cursor: pointer; transition: background 0.15s, color 0.15s; }
.map-tools button + button { border-top: 1px solid var(--line); }
.map-tools button:hover { background: var(--text); color: var(--bg); }
.map-scale { position: absolute; right: 16px; bottom: 14px; display: grid; justify-items: end; gap: 5px; font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); pointer-events: none; }
.map-scale i { display: block; width: 90px; height: 6px; border: 1px solid var(--text); border-top: 0; }

.map-panel { display: flex; flex-direction: column; gap: 16px; padding: 16px 18px 18px; border-left: 1px solid var(--text); min-width: 0; font-size: 13px; }
.map-panel input, .map-panel select { margin-top: 0; padding: 9px 10px; font-size: 13px; }
.map-panel .cap { margin-top: 14px; }
.map-panel h3 { margin-top: 4px; font-size: 17px; letter-spacing: -0.01em; }
.map-info { flex: 1; min-height: 310px; }
.map-near { margin: 6px 0 0; padding: 0; list-style: none; }
.map-near button { display: flex; justify-content: space-between; gap: 10px; width: 100%; padding: 6px 0; border: 0; border-top: 1px solid var(--line); background: none; color: var(--text); font: 400 12.5px var(--mono); text-align: left; cursor: pointer; }
.map-near button:hover { color: var(--accent); }
.map-near b { font-weight: 500; color: var(--muted); }
.map-tells { display: grid; grid-template-columns: auto 1fr; gap: 3px 12px; margin: 6px 0 0; font-size: 12.5px; }
.map-tells dt { color: var(--muted); }
.map-tells dd { margin: 0; overflow-wrap: anywhere; }
.map-live { display: grid; gap: 10px; padding-top: 4px; border-top: 1px solid var(--text); }
.map-live .cap { margin-top: 12px; }
.map-live .btn { padding: 11px 12px; font-size: 12px; text-align: center; }
.map-row { display: grid; gap: 8px; }
.map-form { display: grid; gap: 10px; }
.map-form label { margin: 0; }
.map-form input, .map-form select { margin-top: 5px; }
.map-legend { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px 22px; padding: 12px 18px; border-top: 1px solid var(--line); font-size: 11.5px; letter-spacing: 0.06em; color: var(--muted); }
.map-legend span { display: inline-flex; align-items: center; gap: 8px; }
.map-legend svg { width: 14px; height: 14px; fill: var(--text); }
.map-legend .kinline { stroke: var(--muted); stroke-dasharray: 2 3; }

.map:fullscreen { grid-template-rows: 1fr auto; height: 100vh; overflow: auto; }
.map:fullscreen .map-stage { display: grid; align-items: center; }

@media (max-width: 900px) {
  .map { grid-template-columns: 1fr; }
  .map-panel { border-left: 0; border-top: 1px solid var(--text); }
  .map-info { min-height: 0; }
  .map-card span:last-child { display: none; }
}

/* The live sheet: models blink when they answer and glide when they move. */
.map .pt { transition: opacity 0.25s, transform 1.1s cubic-bezier(0.3, 0.7, 0.2, 1); }
.map .ping { fill: none; stroke: var(--accent); stroke-width: 2; pointer-events: none; animation: map-ping 1.1s ease-out forwards; }
@keyframes map-ping { from { transform: scale(0.6); opacity: 1; } to { transform: scale(3.4); opacity: 0; } }
.map-card div { display: flex; align-items: center; gap: 10px; }
.map-badge { padding: 3px 7px 2px; border: 1px solid var(--muted); font: 600 9.5px/1.2 var(--mono); letter-spacing: 0.16em; color: var(--muted); }
.map-badge.live { border-color: var(--accent); background: var(--accent); color: var(--on-accent); }
.map-badge.live::before { content: "●"; margin-right: 6px; animation: map-blink 1.4s steps(2, start) infinite; }
@keyframes map-blink { to { visibility: hidden; } }
.map-ticker { position: absolute; left: 16px; bottom: 12px; display: grid; gap: 2px; max-width: 62%; margin: 0; padding: 0; list-style: none; font-size: 11px; pointer-events: none; }
.map-ticker li { display: flex; gap: 10px; white-space: nowrap; overflow: hidden; animation: rise 0.35s ease-out both; }
.map-ticker li:nth-child(2) { opacity: 0.7; }
.map-ticker li:nth-child(3) { opacity: 0.5; }
.map-ticker li:nth-child(4) { opacity: 0.32; }
.map-ticker li:nth-child(5) { opacity: 0.18; }
.map-ticker time { color: var(--muted); }
.map-ticker b { font-weight: 600; }
.map-ticker span { color: var(--muted); overflow: hidden; text-overflow: ellipsis; }

/* ── Drift log: one block per recorded batch ── */
.strip { display: inline-flex; flex-wrap: wrap; gap: 2px; vertical-align: middle; }
.strip i { width: 10px; height: 16px; background: var(--line); }
.strip i.x { background: var(--accent); }

/* ── Questions and answers ── */
details { border-top: 1px solid var(--line); }
details:last-of-type { border-bottom: 1px solid var(--line); }
details + * { margin-top: 0; }
.con > details + details { margin-top: 0; }
summary { display: flex; gap: 14px; padding: 13px 0; cursor: pointer; list-style: none; font-weight: 600; }
summary::-webkit-details-marker { display: none; }
summary::before { content: "+"; color: var(--accent); width: 1ch; }
details[open] summary::before { content: "−"; }
summary:hover { color: var(--accent); }
details p { padding: 0 0 16px calc(1ch + 14px); max-width: 78ch; color: var(--muted); }

.big { font: 500 clamp(28px, 4vw, 44px)/1 var(--mono); letter-spacing: -0.03em; }

/* ── Paper ── */
@media print {
  body { padding: 0; }
  body::before, .tabs, .actions, .controls, ts-footer, form { display: none !important; }
  .sheet { border: 0; max-width: none; }
  .part { break-inside: avoid; }
  .cells i, .matrix td, .mark, .stamp { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}

/* ── Footer ── */
.foot { max-width: var(--sheet); margin: 0 auto; display: flex; flex-wrap: wrap; gap: 8px 30px; justify-content: space-between; padding: 18px var(--pad) 46px; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }

/* ── Motion ── */
@keyframes press { 0% { opacity: 0; transform: rotate(-16deg) scale(2.3); } 60% { opacity: 1; transform: rotate(-5deg) scale(0.94); } 100% { opacity: 1; transform: rotate(-7deg) scale(1); } }
@keyframes wipe { from { background-size: 0 100%; color: var(--text); } to { background-size: 100% 100%; color: var(--on-accent); } }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.stamp.press { animation: press 0.5s cubic-bezier(0.2, 0.9, 0.3, 1.2) 0.55s both; }
.mark.wipe { animation: wipe 0.6s cubic-bezier(0.6, 0, 0.2, 1) 0.15s both; }
.rise { animation: rise 0.5s ease-out both; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ── Small screens ── */
@media (max-width: 900px) {
  :root { --pad: 20px; }
  body { padding: 16px 16px 0; font-size: 14px; }
  .mast { grid-template-columns: 1fr; }
  .mast-meta { border-left: 0; border-top: 1px solid var(--text); }
  .tabs { grid-template-columns: 1fr 1fr; }
  .tabs a { padding: 13px var(--pad); }
  .tabs a + a { border-left: 0; }
  .tabs a:nth-child(even) { border-left: 1px solid var(--text); }
  .tabs a:nth-child(n + 3) { border-top: 1px solid var(--text); }
  .tabs a:last-child:nth-child(odd) { grid-column: span 2; }
  .title { grid-template-columns: 1fr; padding: 46px var(--pad) 40px; }
  .stamp { justify-self: start; margin-top: 8px; }
  .part { grid-template-columns: 1fr; }
  .lab { display: flex; align-items: baseline; gap: 12px; padding: 16px var(--pad) 0; border-right: 0; }
  .lab b { margin: 0; font-size: 18px; }
  .lab small { margin: 0; }
  .con { padding-top: 14px; }
  .steps, .steps.five, .pair, .toc { grid-template-columns: 1fr; }
  .steps.five > div, .steps.five > div + div { padding: 0; }
  .finger { grid-template-columns: 1fr 1fr; }
  .steps > div, .steps > div + div { padding: 0; border: 0; }
  .steps > div + div { margin-top: 18px; }
  .pair > fieldset:first-child { padding-right: 0; }
  .pair > fieldset + fieldset { border-left: 0; padding-left: 0; margin-top: 26px; }
  .verdict { grid-template-columns: 1fr; }
  .signals { grid-template-columns: 1fr; }
  .signals dt { padding-bottom: 0; }
  .signals dd { border-top: 0; padding-top: 2px; }
  .controls .push { margin-left: 0; width: 100%; }
  .cells { max-width: 110px; }
  th, td.nw:first-child { white-space: normal; }
}