/* Solubility Curve Practice: a cool lab-bench grey-blue page, a white setup card with a potassium-dichromate orange
   edge, condensed headings, three rising and falling curves beside the title, and graphs on white blue-ruled graph
   paper in both themes, as on paper. Curves are coloured on screen and labelled with their formulas; on paper they
   print black. Key reading lines are dashed magenta and blue. */
:root {
  --bg: #eef3f5;
  --paper: #ffffff;
  --ink: #14212b;
  --muted: #485864;
  --line: #d2dde3;
  --edge: #6b7d89;
  --accent: #b4470f;
  --accent-ink: #ffffff;
  --accent-soft: #fbe9dd;
  --info: #1d5a8c;
  --ok: #17663a;
  --ok-soft: #dcefe0;
  --close: #7a5300;
  --close-soft: #f6ecd2;
  --bad: #a3241d;
  --bad-soft: #f8e0dd;
  --focus: #a0167a;
  --head: "Avenir Next Condensed", "Roboto Condensed", "Arial Narrow", "Helvetica Neue", system-ui, sans-serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "DejaVu Sans Mono", monospace;
  --r: 3px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11181d;
    --paper: #1a232a;
    --ink: #e4ecf0;
    --muted: #a3b3bd;
    --line: #2d3a43;
    --edge: #74858f;
    --accent: #f08a4b;
    --accent-ink: #1c0d03;
    --accent-soft: #33221a;
    --info: #9cc9ec;
    --ok: #8adca6;
    --ok-soft: #14301f;
    --close: #f0c56b;
    --close-soft: #352a12;
    --bad: #ff9c8f;
    --bad-soft: #3a1c18;
    --focus: #f48fd6;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 var(--sans); }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
a { color: var(--info); text-underline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--paper); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--head); line-height: 1.12; font-weight: 700; font-stretch: condensed; }

/* ---------- title with three curves ---------- */
.hero { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; padding: 22px 0 14px; }
.hero h1 { font-size: clamp(29px, 4.6vw, 44px); margin: 0 0 6px; letter-spacing: -0.01em; max-width: 20ch; }
.lede { margin: 0; max-width: 62ch; }
.flask { flex: none; width: 112px; height: 84px; }
.flask path { fill: none; stroke-width: 4; stroke-linecap: round; }
.flask .fg { stroke: var(--edge); stroke-width: 3; }
.flask .f1 { stroke: var(--accent); }
.flask .f2 { stroke: var(--info); }
.flask .f3 { stroke: var(--muted); stroke-dasharray: 2 6; }

/* ---------- controls: a white card with an orange edge ---------- */
.tool { display: grid; gap: 14px; grid-template-columns: 1fr; align-items: start; }
.setup { background: var(--paper); border-radius: var(--r); padding: 10px 14px 2px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 16px; align-items: end; box-shadow: 0 1px 0 var(--line); }
.courses { grid-column: 1; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
legend { font: 600 16px var(--sans); color: var(--muted); padding: 0; margin-bottom: 4px; }
.seg { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border: 1px solid var(--edge); border-radius: var(--r); overflow: hidden; }
.seg label { position: relative; min-width: 0; }
.seg label + label { border-left: 1px solid var(--edge); }
.seg input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.seg span { display: flex; align-items: center; justify-content: center; text-align: center; min-height: 44px; padding: 4px 8px; font: 600 15.5px var(--sans); line-height: 1.15; color: var(--ink); background: var(--paper); }
.seg input:checked + span { background: var(--accent); color: var(--accent-ink); }
.seg input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: -3px; }
.ctl { grid-column: 2; display: flex; gap: 10px; align-items: end; }
.fld { display: grid; gap: 2px; min-width: 0; }
.fld select { width: 100%; min-width: 0; } /* 320 px: Curves overlapped Questions and lost its arrow (fresh-eyes 2026-10-27) */
.fld span { font: 600 14px var(--sans); color: var(--muted); }
.more { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 0 22px; }
.more details[open] { flex-basis: 100%; }
.tdet summary, .rules summary { cursor: pointer; font-weight: 600; min-height: 44px; padding: 10px 0; display: list-item; }
.tsum { font-weight: 400; color: var(--muted); font-size: 15px; }
.toggles { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 6px; padding: 2px 0 10px; }
.tg { display: flex; gap: 8px; align-items: flex-start; padding: 8px; border: 1px solid var(--line); border-radius: var(--r); cursor: pointer; min-height: 44px; }
.tg input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--accent); flex: none; }
.tg b { display: block; font-weight: 600; font-size: 15.5px; }
.tg small { display: block; color: var(--muted); font-size: 14px; line-height: 1.3; }
select, input { font: inherit; font-size: 16px; color: var(--ink); background: var(--paper); border: 1px solid var(--edge); border-radius: var(--r); min-height: 44px; padding: 6px 10px; max-width: 100%; }
.btn { font: 600 16px var(--sans); min-height: 44px; padding: 8px 16px; border-radius: var(--r); border: 1px solid var(--edge); background: var(--paper); color: var(--ink); cursor: pointer; }
.btn:hover { border-color: var(--ink); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.small { min-height: 40px; padding: 6px 14px; font-size: 15px; }
.link { font: inherit; background: none; border: 0; color: var(--info); text-decoration: underline; text-underline-offset: 2px; cursor: pointer; min-height: 44px; padding: 0 4px; }
.rl { margin: 0 0 10px; padding-left: 20px; font-size: 15.5px; line-height: 1.45; }
.rl li { margin: 0 0 4px; }

/* ---------- the sheet ---------- */
.note { margin: 0 0 10px; padding: 10px 12px; border: 1px solid var(--bad); background: var(--bad-soft); font-size: 16px; border-radius: var(--r); }
#store-note { overflow-wrap: anywhere; }
.note.info { border-color: var(--info); background: var(--paper); }
.sheet:focus { outline: none; }
.sheet-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 14px; }
.sheet-head h2 { font-size: 29px; margin: 6px 0 0; }
.code { font-family: var(--mono); letter-spacing: 0.06em; }
.score { margin: 0; color: var(--muted); font-size: 15px; }
.sline { margin: 2px 0 10px; color: var(--muted); font-size: 15px; }
.qs { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; }
.q { background: var(--paper); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); min-width: 0; }
.qhead { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 12px 14px 0; }
.q h3 { margin: 0; font-size: 23px; display: flex; align-items: baseline; gap: 10px; }
.qn { font: 700 22px var(--head); color: var(--accent); min-width: 1.2em; }
.scen { margin: 6px 14px 8px; max-width: 75ch; }
.figview { padding: 0 14px; min-width: 0; }
/* minmax(0, 1fr): an open key's zoomed 660 px graph must scroll in its own box, not widen the page (QA 2026-10-27) */
.qparts { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; padding: 10px 14px 14px; }
.zoom { display: none; min-height: 40px; padding: 4px 12px; white-space: nowrap; }

/* ---------- drawings: white like paper in both themes ---------- */
.dw { color: #14212b; max-width: 100%; }
svg.doc { display: block; background: #fff; }
svg.graph { width: 100%; max-width: 680px; height: auto; border: 1px solid #c3d3dc; }
.gmin { stroke: #d6e5ee; stroke-width: 1; }
.gmaj { stroke: #93b6ca; stroke-width: 1.3; }
.ax { stroke: #14212b; stroke-width: 2; }
.tx, .ty { fill: #14212b; font: 21px "Helvetica Neue", Arial, sans-serif; }
.al { fill: #14212b; font: 600 18px "Helvetica Neue", Arial, sans-serif; }
.cv polyline { fill: none; stroke-width: 3; stroke-linejoin: round; stroke-linecap: round; }
.cv0 polyline { stroke: #1d4f91; } .cl0 { fill: #1d4f91; }
.cv1 polyline { stroke: #b4470f; } .cl1 { fill: #9c3c0b; }
.cv2 polyline { stroke: #2b7a3d; } .cl2 { fill: #22652f; }
.cv3 polyline { stroke: #6b3d99; } .cl3 { fill: #6b3d99; }
.cv4 polyline { stroke: #7d6300; } .cl4 { fill: #6a5400; }
.cl { font: 700 20px "Helvetica Neue", Arial, sans-serif; paint-order: stroke; stroke: #fff; stroke-width: 4px; stroke-linejoin: round; }
.k1, .k2, .k3, .kb { fill: none; stroke-width: 2.2; }
.k1 { stroke: #a3135b; stroke-dasharray: 9 5; }
.k2 { stroke: #1d5a8c; stroke-dasharray: 12 4 3 4; }
.k3 { stroke: #485864; stroke-dasharray: 3 4; }
.kb { stroke: #b4470f; stroke-width: 6; }
.kd { fill: #a3135b; }
.kx { fill: none; stroke: #a3135b; stroke-width: 2.6; }
.kp line { stroke: #14212b; stroke-width: 3; }
.band { fill: #b4470f; fill-opacity: 0.16; stroke: none; }
.pt { fill: #14212b; }
.gscale { margin: 4px 0 0; font-size: 14.5px; color: var(--muted); }
.klg { list-style: none; margin: 6px 0 0; padding: 0; font-size: 15px; display: grid; gap: 2px; }
.klg li { display: flex; align-items: center; gap: 8px; }
.ksw { width: 34px; height: 12px; flex: none; background: #fff; }
.kpx { display: inline-block; width: 34px; text-align: center; font-weight: 700; }
.kband { display: inline-block; width: 34px; height: 12px; background: rgba(180, 71, 15, 0.28); flex: none; }
.plotrow { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-start; }
.plotrow .dw-graph { flex: 1 1 420px; min-width: 0; }
table.doc { border-collapse: collapse; background: #fff; color: #14212b; font-size: 15.5px; font-variant-numeric: tabular-nums; border: 1.5px solid #14212b; }
table.doc caption { caption-side: top; text-align: left; font-weight: 600; padding: 0 0 4px; color: var(--ink); }
table.doc th, table.doc td { border: 1px solid #b4c3cc; padding: 5px 10px; text-align: right; }
table.doc thead th { background: #edf3f6; font-size: 14px; text-align: center; font-weight: 600; max-width: 9em; line-height: 1.25; }
table.doc tbody th { text-align: center; font-weight: 600; }

/* answer boxes */
.part { border: 0; margin: 0; padding: 0; min-width: 0; }
.part .prompt, .part legend { display: block; font-weight: 600; font-size: 16px; line-height: 1.3; margin-bottom: 4px; color: var(--ink); }
.ain { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ain input { width: 9em; max-width: 100%; font-variant-numeric: tabular-nums; }
.ain .unit { color: var(--muted); }
.opts { display: flex; flex-wrap: wrap; gap: 6px; }
.opt { display: flex; gap: 8px; align-items: center; min-height: 44px; padding: 6px 12px; border: 1px solid var(--line); border-radius: var(--r); cursor: pointer; }
.opt input { width: 20px; height: 20px; margin: 0; accent-color: var(--accent); flex: none; min-height: 0; }
.part.is-right input[inputmode] { border-color: var(--ok); background: var(--ok-soft); }
.part.is-wrong input[inputmode] { border-color: var(--bad); background: var(--bad-soft); }
.part.is-close input[inputmode], .part.is-unread input[inputmode] { border-color: var(--close); background: var(--close-soft); }
.part.is-right .opt:has(input:checked) { border-color: var(--ok); background: var(--ok-soft); }
.part.is-wrong .opt:has(input:checked) { border-color: var(--bad); background: var(--bad-soft); }
.fb { margin: 4px 0 0; font-size: 15px; line-height: 1.4; padding: 4px 8px; }
.fb.right { color: var(--ok); background: var(--ok-soft); }
.fb.wrong { color: var(--bad); background: var(--bad-soft); }
.fb.close, .fb.unread { color: var(--close); background: var(--close-soft); }
.qfoot { display: flex; gap: 10px; align-items: center; }
details.work { margin-top: 2px; border-top: 1px dashed var(--line); padding-top: 4px; min-width: 0; }
details.work summary { cursor: pointer; color: var(--info); min-height: 44px; display: flex; align-items: center; font-weight: 600; }
details.work .figview { padding: 0; margin: 6px 0 8px; }
.ans { margin: 8px 0 2px; }
ul.steps { margin: 0 0 4px; padding-left: 20px; color: var(--muted); font-size: 15.5px; }
.sheet-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin: 14px 0 6px; }
.ask { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; background: var(--accent-soft); padding: 6px 10px; }
.share { margin: 16px 0 6px; }
.print-row { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; }
.print-row label { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; max-width: 100%; }
.print-row select { max-width: 100%; min-width: 0; }
.share-out label { display: grid; gap: 4px; font-weight: 600; margin-top: 8px; }
.share-out input { width: 100%; }
.recent { margin-top: 12px; background: var(--paper); border: 1px solid var(--line); padding: 4px 12px; }
.recent summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; font-weight: 600; }
.recent ul { list-style: none; margin: 0; padding: 0; }
.recent li { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 6px 0; border-top: 1px solid var(--line); }
.recent small { display: block; color: var(--muted); font-size: 14px; }
.hint { color: var(--muted); font-size: 15px; margin: 0; }
.toast { position: fixed; left: 50%; bottom: 16px; transform: translateX(-50%) translateY(150%); background: var(--ink); color: var(--paper); padding: 10px 16px; max-width: min(92vw, 520px); font-size: 15.5px; transition: transform 0.2s; z-index: 20; }
.toast.on { transform: translateX(-50%) translateY(0); }
@media (prefers-reduced-motion: reduce) { .toast { transition: none; } }

/* ---------- content ---------- */
.content { max-width: 72ch; padding: 26px 0 20px; }
.content h2 { font-size: 28px; margin: 26px 0 6px; }
.tw { max-width: 100%; overflow-x: auto; }
table.ref { border-collapse: collapse; font-size: 15px; background: var(--paper); font-variant-numeric: tabular-nums; }
table.ref caption { text-align: left; color: var(--muted); font-size: 14.5px; padding-bottom: 4px; }
table.ref th, table.ref td { border-bottom: 1px solid var(--line); padding: 5px 8px; text-align: right; }
table.ref th[scope="row"], table.ref thead th:first-child { text-align: left; font-weight: 600; }
table.ref thead th { font-size: 14px; color: var(--muted); }
.fm { font-weight: 400; color: var(--muted); }
.na { color: var(--muted); font-size: 13.5px; }
.small { font-size: 15.5px; color: var(--muted); }
.faq details { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; padding: 10px 0; min-height: 44px; }
.faq p { margin: 0 0 12px; }
.sources { font-size: 15px; color: var(--muted); }
footer { border-top: 1px solid var(--line); padding: 16px 0 28px; font-size: 15px; color: var(--muted); }
.indep { margin: 0 0 10px; }
.sb-footer p { margin: 6px 0; }
.sb-more { line-height: 1.8; }
.print-root { display: none; }

@media (min-width: 900px) {
  .qparts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 22px; }
  .qparts .qfoot, .qparts details.work, .qparts .part.wide { grid-column: 1 / -1; }
}
/* wide screens: the answers sit beside the graph, as on the printed sheet, so the first answer box is on screen */
@media (min-width: 1000px) {
  .q { display: grid; grid-template-columns: minmax(0, 600px) minmax(300px, 1fr); column-gap: 8px; align-items: start; }
  .q > .qhead, .q > .scen { grid-column: 1 / -1; }
  .q > .figview { grid-column: 1; padding-bottom: 14px; }
  .q > .qparts { grid-column: 2; grid-template-columns: minmax(0, 1fr); padding-top: 0; }
  .q > .qparts .qfoot, .q > .qparts details.work, .q > .qparts .part.wide { grid-column: auto; }
}
@media (max-width: 760px) {
  .setup { grid-template-columns: minmax(0, 1fr); }
  .ctl { grid-column: 1; }
  .ctl .fld { flex: 1; }
  .flask { display: none; }
}
@media (max-width: 640px) {
  .zoom { display: inline-block; }
  .zoomed .dw-graph { overflow-x: auto; }
  .zoomed svg.graph { width: 660px; max-width: none; }
}
@media (max-width: 480px) {
  .hero { padding: 10px 0 10px; }
  .hero h1 { font-size: 27px; }
  .lede { font-size: 15.5px; line-height: 1.45; }
  .setup { padding: 8px 10px 0; }
  .seg { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .seg label:nth-child(3) { border-left: 0; }
  .seg label:nth-child(n+3) { border-top: 1px solid var(--edge); }
  .seg span { font-size: 15px; }
  .ctl { gap: 8px; }
  .q h3 { font-size: 21px; }
  .qhead { padding: 8px 8px 0; }
  .scen { margin: 6px 8px; }
  .figview { padding: 0 8px; }
  .qparts { padding: 8px 8px 12px; }
  table.doc { font-size: 14px; }
  table.doc th, table.doc td { padding: 4px 6px; }
  .tdet summary, .rules summary { min-height: 40px; padding: 8px 0; }
}

/* ---------- print ---------- */
@media print {
  :root { --ink: #000; --muted: #333; --line: #999; --paper: #fff; --edge: #555; }
  @page { margin: 12mm 12mm; }
  body { background: #fff; color: #000; font: 10.5pt/1.36 var(--sans); }
  main, footer, .toast, .skip { display: none !important; }
  .print-root { display: block; }
  svg, table.doc, .kband, .ksw { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  table.pt { width: 100%; border-collapse: collapse; }
  table.pt > tbody > tr > td, table.pt > thead > tr > td { padding: 0; }
  .prun { font: 8.5pt var(--sans); color: #444; padding-bottom: 5pt !important; }
  .ph { display: flex; justify-content: space-between; align-items: baseline; gap: 10pt; border-bottom: 2pt solid #000; margin-bottom: 4pt; }
  .ph h2 { font: 700 17pt var(--head); margin: 0; white-space: nowrap; }
  .ph p { margin: 0; font-size: 9pt; text-align: right; }
  .pmeta { display: flex; justify-content: space-between; gap: 12pt; margin: 4pt 0 4pt; }
  .pround { margin: 0 0 4pt; font-size: 7.8pt; line-height: 1.28; border: 0.8pt solid #000; padding: 3pt 6pt; }
  .pround ul { margin: 0; padding-left: 11pt; columns: 2; column-gap: 8mm; }
  .pround li { break-inside: avoid; margin: 0 0 1pt; }
  .pq, .pk { list-style: none; margin: 0; padding: 0; }
  .pq > li, .pk > li { padding: 6pt 0 7pt; border-bottom: 0.75pt solid #999; break-inside: avoid; page-break-inside: avoid; }
  .pq h3, .pk h3 { font: 700 12.5pt var(--head); margin: 0 0 2pt; }
  .pscen { margin: 0 0 4pt; font-size: 10.2pt; }
  .pbody { display: grid; grid-template-columns: max-content minmax(0, 1fr); column-gap: 5mm; align-items: start; }
  /* a graph prints 140 mm wide: small squares about 2 mm, like ordinary graph paper */
  .pfig svg.graph { width: 140mm; max-width: none; border-color: #777; }
  .pfig .plotrow { display: grid; grid-template-columns: max-content; gap: 2mm; }
  /* plotting: the table and the grid take the full width (small squares about 2.2 mm, square), answers go underneath */
  .pq .pk-plot .pbody { grid-template-columns: minmax(0, 1fr); row-gap: 2mm; }
  .pq .pk-plot .pfig .plotrow { grid-template-columns: max-content minmax(0, 1fr); align-items: start; }
  .pq .pk-plot .pfig svg.graph { width: 100%; max-width: 150mm; }
  .pq .pk-plot .pparts { grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: 6mm; }
  .pkfig svg.graph { width: 96mm; max-width: none; }
  .pkfig .plotrow { display: grid; grid-template-columns: max-content max-content; gap: 3mm; align-items: start; }
  .gscale { font-size: 8.4pt; color: #333; margin: 1pt 0 0; }
  .klg { font-size: 8.4pt; gap: 0; margin-top: 2pt; }
  .ksw, .kpx, .kband { width: 22pt; height: 8pt; }
  .gmin { stroke: #c9c9c9; stroke-width: 0.8; }
  .gmaj { stroke: #777; stroke-width: 1.2; }
  .cv polyline { stroke: #000 !important; stroke-width: 2.4; }
  .cl { fill: #000 !important; }
  .k1, .kd { stroke: #000; }
  .kd { fill: #000; }
  .kx { stroke: #000; }
  .k2 { stroke: #333; }
  .kb { stroke: #555; }
  .band { fill: #000; fill-opacity: 0.12; }
  .kband { background: #ddd; }
  table.doc { font-size: 9.4pt; border-width: 1pt; }
  table.doc caption { font-size: 9pt; color: #000; }
  table.doc th, table.doc td { padding: 1.5pt 6pt; border-color: #777; }
  table.doc thead th { font-size: 8.4pt; background: #eee; max-width: 22mm; }
  .pparts { display: grid; grid-template-columns: 1fr; gap: 3pt; font-size: 9.8pt; }
  .pparts .pp { break-inside: avoid; }
  .pparts .pp p { margin: 0; }
  .pparts .pp.wide { grid-column: 1 / -1; }
  .pline { margin: 8pt 0 3pt !important; white-space: nowrap; }
  .uline { display: inline-block; width: 26mm; border-bottom: 0.8pt solid #000; }
  .popts { display: grid; gap: 1pt; margin: 2pt 0 0 !important; }
  .pkey { break-before: page; page-break-before: always; }
  .psheet + .psheet { break-before: page; page-break-before: always; }
  .pkey + .pkey { break-before: page; page-break-before: always; }
  .pkbody { display: grid; grid-template-columns: max-content minmax(0, 1fr); column-gap: 5mm; align-items: start; }
  .pk-plot .pkbody { grid-template-columns: minmax(0, 1fr); row-gap: 2mm; }
  .pkans { display: grid; gap: 3pt; font-size: 9pt; line-height: 1.3; }
  .pk-plot .pkans { grid-template-columns: 1fr 1fr 1fr; column-gap: 5mm; }
  .pka { break-inside: avoid; }
  .pka p { margin: 0; }
  .pkw { color: #333; font-size: 8.4pt; }
}
a.btn { display: inline-flex; align-items: center; text-decoration: none; }