/* Popov Academy — content-factory/archimedes-winter-2021-2022-2026-v1: student labs (loaded only on these pages).
   Base styles shared by all labs; each lab may add visuals/labs/<kind>.css, which assets.mjs appends to this file.
   Colours are local variables. Dark values follow the site's own theme switch (html[data-design=v2] with
   data-theme=dark, or the system dark mode unless data-theme=light) and reuse the site tokens from
   redesign.css, as in the 2025 package; the global theme itself is not changed. */
.arch-lab{min-width:0;--arch-surface:#fff;--arch-ink:#1f2937;--arch-label:#203c58;--arch-muted:#5b6b82;--arch-field-line:#aebed1;--arch-soft-line:#d7e1ed;--arch-primary-bg:#244974;--arch-primary-ink:#fff;--arch-link:#244974;--arch-pressed-bg:#e6eefb;--arch-pressed-line:#244974;--arch-good:#047857;--arch-bad:#b91c1c;--arch-focus:#f59e0b;--arch-fig-line:#1f2937;--arch-grid:#c7d2e0;--arch-fill:#dbeafe;--arch-piece-a:#bfdbfe;--arch-piece-b:#fde68a;--arch-piece-c:#fecaca;--arch-piece-d:#bbf7d0;--arch-accent:#c2410c;--arch-water:#e0f2fe;--arch-ok-bg:#dcfce7;--arch-bad-bg:#fee2e2;--arch-knight:#1d4ed8;--arch-liar:#9f1239;--arch-clear:#e2e8f0}
@media (prefers-color-scheme: dark){:root[data-design="v2"]:not([data-theme="light"]) .arch-lab{--arch-surface:var(--play-stage);--arch-ink:var(--ink);--arch-label:var(--ink);--arch-muted:var(--ink-2);--arch-field-line:var(--ink-3);--arch-soft-line:var(--play-line);--arch-primary-bg:var(--accent);--arch-primary-ink:var(--on-ink);--arch-link:var(--accent-ink);--arch-pressed-bg:var(--accent-soft);--arch-pressed-line:var(--accent);--arch-good:var(--ok);--arch-bad:var(--bad);--arch-fig-line:#dbe4f0;--arch-grid:#4a5568;--arch-fill:#1e3a5f;--arch-piece-a:#1e40af;--arch-piece-b:#854d0e;--arch-piece-c:#9f1239;--arch-piece-d:#166534;--arch-accent:#fb923c;--arch-water:#0c2a3f;--arch-ok-bg:#14341f;--arch-bad-bg:#431818;--arch-knight:#93c5fd;--arch-liar:#fda4af;--arch-clear:#3f4654}}
:root[data-design="v2"][data-theme="dark"] .arch-lab{--arch-surface:var(--play-stage);--arch-ink:var(--ink);--arch-label:var(--ink);--arch-muted:var(--ink-2);--arch-field-line:var(--ink-3);--arch-soft-line:var(--play-line);--arch-primary-bg:var(--accent);--arch-primary-ink:var(--on-ink);--arch-link:var(--accent-ink);--arch-pressed-bg:var(--accent-soft);--arch-pressed-line:var(--accent);--arch-good:var(--ok);--arch-bad:var(--bad);--arch-fig-line:#dbe4f0;--arch-grid:#4a5568;--arch-fill:#1e3a5f;--arch-piece-a:#1e40af;--arch-piece-b:#854d0e;--arch-piece-c:#9f1239;--arch-piece-d:#166534;--arch-accent:#fb923c;--arch-water:#0c2a3f;--arch-ok-bg:#14341f;--arch-bad-bg:#431818;--arch-knight:#93c5fd;--arch-liar:#fda4af;--arch-clear:#3f4654}
.arch-try{margin:18px 0}
.arch-lab [data-arch-lab-body]{display:grid;grid-template-columns:minmax(0,1fr);gap:14px;min-width:0}
.arch-lab .arch-lab-fallback{color:var(--arch-muted);font-size:15px}
.arch-lab label,.arch-lab .arch-label{font-weight:600;color:var(--arch-label)}
.arch-lab .arch-help{font-size:14px;color:var(--arch-muted);margin:0}
.arch-lab .arch-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;min-width:0}
.arch-lab input[type=text],.arch-lab input[type=number],.arch-lab select{font:inherit;font-size:18px;min-height:44px;padding:8px 12px;border:1px solid var(--arch-field-line);border-radius:12px;background:var(--arch-surface);color:var(--arch-ink);min-width:0}
.arch-lab input[type=number]{width:88px}
.arch-lab input[type=range]{flex:1 1 180px;min-width:0;min-height:44px;accent-color:var(--arch-primary-bg)}
.arch-lab button{font:inherit;font-size:16px;min-height:44px;min-width:44px;padding:10px 16px;border-radius:999px;line-height:1.4;max-width:100%;white-space:normal;cursor:pointer}
.arch-lab .arch-primary{background:var(--arch-primary-bg);color:var(--arch-primary-ink);border:1px solid var(--arch-primary-bg)}
.arch-lab .arch-secondary{background:var(--arch-surface);color:var(--arch-link);border:1px solid var(--arch-field-line)}
.arch-lab button[aria-disabled=true]{opacity:.45;cursor:default}
.arch-lab button:focus-visible,.arch-lab input:focus-visible,.arch-lab select:focus-visible,.arch-lab [tabindex]:focus-visible{outline:3px solid var(--arch-focus);outline-offset:2px}
.arch-lab .arch-actions{display:flex;flex-wrap:wrap;gap:8px}
.arch-lab .arch-toggle{display:flex;flex-wrap:wrap;gap:6px}
.arch-lab .arch-toggle button{background:var(--arch-surface);color:var(--arch-link);border:1px solid var(--arch-field-line)}
.arch-lab .arch-toggle button[aria-pressed=true]{background:var(--arch-pressed-bg);border-color:var(--arch-pressed-line);font-weight:600}
.arch-lab .arch-result{background:var(--arch-surface);color:var(--arch-ink);border:1px solid var(--arch-soft-line);border-radius:14px;padding:14px 16px;line-height:1.55;min-width:0;overflow-wrap:anywhere}
.arch-lab .arch-result:empty{display:none}
.arch-lab :is(button,input,select){scroll-margin-block:120px}
.arch-lab .arch-result p{margin:6px 0}
.arch-lab .arch-checks{list-style:none;padding:0;margin:6px 0;display:grid;gap:6px}
.arch-lab .arch-checks li{display:flex;gap:8px;align-items:flex-start}
.arch-lab .arch-pass::before{content:'✓';color:var(--arch-good);font-weight:700;flex-shrink:0;width:1.2em}
.arch-lab .arch-fail::before{content:'✗';color:var(--arch-bad);font-weight:700;flex-shrink:0;width:1.2em}
.arch-lab .arch-good{color:var(--arch-good);font-weight:600}
.arch-lab .arch-bad{color:var(--arch-bad);font-weight:600}
.arch-lab .arch-sub{display:grid;gap:8px;border-top:1px solid var(--arch-soft-line);padding-top:12px}
.arch-lab .arch-stage{background:var(--arch-surface);border:1px solid var(--arch-soft-line);border-radius:8px;padding:8px;min-width:0}
.arch-lab .arch-stage svg{display:block;width:100%;height:auto;max-height:70vh;touch-action:manipulation}
.arch-lab svg text{fill:var(--arch-ink);font-family:system-ui,-apple-system,"Segoe UI",Arial,sans-serif}
.arch-lab .arch-readouts{display:flex;flex-wrap:wrap;gap:8px 18px;margin:0;font-variant-numeric:tabular-nums}
.arch-lab .arch-readouts div{display:flex;gap:6px;align-items:baseline}
.arch-lab .arch-readouts dt{color:var(--arch-muted);font-size:14px}
.arch-lab .arch-readouts dd{margin:0;font-weight:600;color:var(--arch-ink);white-space:nowrap;overflow-wrap:normal}
.arch-lab .arch-table-wrap{overflow-x:auto;max-width:100%}
.arch-lab table.arch-table{border-collapse:collapse;font-variant-numeric:tabular-nums}
.arch-lab table.arch-table th,.arch-lab table.arch-table td{border:1px solid var(--arch-soft-line);padding:4px 8px;text-align:center;color:var(--arch-ink)}
.arch-lab table.arch-table th{color:var(--arch-label);font-weight:600}
.arch-lab .arch-chip{display:inline-flex;align-items:center;justify-content:center;min-width:2.2em;padding:2px 8px;border-radius:999px;border:1px solid var(--arch-soft-line);font-weight:600}
@media(max-width:480px){.arch-lab .arch-row .arch-primary{flex:1 1 100%}.arch-lab button{padding:8px 10px}}
/* shared: play button keeps its width next to a time slider, also on phones */
.arch-lab .arch-timeline{flex-wrap:nowrap}
.arch-lab .arch-timeline .arch-play{flex:0 0 auto;min-width:96px}
/* Inside the «Исследовать» disclosure the lab already has a frame: on phones drop the second one so models keep their width. */
@media (max-width:560px){.lesson-disclosure .arch-lab{padding:0;border:0;background:none;box-shadow:none}.lesson-disclosure .arch-lab .arch-stage{padding:4px}}
/* Phones: «Крупные клетки» (ui.mjs zoomable). Cells keep at least 44 px and the board scrolls sideways in its frame;
   the board geometry is unchanged, only its scale. */
.arch-lab .arch-zoom{min-width:0}
.arch-lab .arch-zoom-tools{margin-bottom:8px}
.arch-lab .arch-zoom-hint{margin:0 0 8px;font-weight:600;color:var(--arch-label)}
.arch-lab .arch-zoom-probe{height:0}
.arch-lab .arch-zoom-scroll{overflow-x:auto;overscroll-behavior-x:contain;padding:4px;min-width:0}
/* shared extras for this package: cell boards built from buttons, a status line that is never hidden under the
   sticky header after a programmatic scroll, and a compact step list */
.arch-lab .arch-board{display:grid;gap:0;justify-content:center;margin:auto}
.arch-lab .arch-cell{aspect-ratio:1;min-width:0;min-height:0;width:100%;padding:0;border-radius:0;background:var(--arch-surface);color:var(--arch-ink);border:1px solid var(--arch-grid);outline-offset:-3px;font-variant-numeric:tabular-nums}
.arch-lab .arch-result{scroll-margin-top:96px;scroll-margin-bottom:96px}
.arch-lab .arch-log{margin:0;padding-left:1.4em;display:grid;gap:4px;font-variant-numeric:tabular-nums}
.arch-lab .arch-legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin:0;padding:0;list-style:none;font-size:14px;color:var(--arch-ink)}
.arch-lab .arch-legend li{display:flex;align-items:center;gap:6px}

/* Same page presentation as the final 2023–2024 edition on main (GPT polish of 18.10.2026): the shared research
   renderer follows the current site on these pages only. Diagrams keep their light paper; controls and readouts
   follow the selected theme. */
[data-problem-id^="archimedes-winter-"] .cf-figure figcaption,
[data-problem-id^="archimedes-winter-"] .lesson-source{color:var(--ink-2)}
[data-problem-id^="archimedes-winter-"] .lesson-source summary{color:var(--ink)}
[data-problem-id^="archimedes-winter-"] :is(button[data-cf-zoom],button[data-cf-scene-zoom]){color:var(--ink);background:var(--play-stage);border-color:var(--ink-3);border-radius:999px;min-height:44px;padding:10px 16px;margin-top:12px;max-width:100%;line-height:1.4}
[data-problem-id^="archimedes-winter-"] .interactive-actions button{color:var(--ink);background:var(--play-stage);border-color:var(--ink-3);font-size:16px}
[data-problem-id^="archimedes-winter-"] .interactive-actions button[data-action=play]{color:var(--on-ink);background:var(--ink);border-color:var(--ink)}
[data-problem-id^="archimedes-winter-"] .interactive-range-row{grid-template-columns:minmax(60px,1fr) 88px}
[data-problem-id^="archimedes-winter-"] .cf-number{background:var(--play-stage);color:var(--ink);border-color:var(--ink-3);border-radius:12px;min-height:44px;height:auto;padding:8px 6px;font-size:18px;font-variant-numeric:tabular-nums}
[data-problem-id^="archimedes-winter-"] .interactive-range-row input[type=range]{min-height:44px;accent-color:var(--accent)}
[data-problem-id^="archimedes-winter-"] .interactive-results>div{background:var(--play-stage);border-color:var(--play-line);border-radius:14px;padding:14px 16px;font-size:16px}
[data-problem-id^="archimedes-winter-"] .interactive-results :is(div,span,strong){color:var(--ink)}
[data-problem-id^="archimedes-winter-"] .learning-interactive :is(button,input){scroll-margin-block:120px}
/* Keep diagrams readable as diagrams, without the inherited white text outline. */
[data-problem-id^="archimedes-winter-"] :is(.cf-figure-svg,.cf-zoom-content) svg text{stroke:none;paint-order:normal}
[data-problem-id^="archimedes-winter-"] .cf-figure figcaption button[data-cf-zoom]{display:block;margin:14px auto 0}
[data-problem-id^="archimedes-winter-"] .arch-model-entry{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;padding:20px 24px;margin:24px 0;border:1px solid var(--play-line);border-radius:var(--r-lg);background:var(--play-bg);color:var(--ink)}
[data-problem-id^="archimedes-winter-"] .arch-model-entry>div{flex:1 1 240px;min-width:0}
[data-problem-id^="archimedes-winter-"] .arch-model-entry strong{font-size:17px}
[data-problem-id^="archimedes-winter-"] .arch-model-entry p{margin:5px 0 0;color:var(--ink-2);font-size:16px;line-height:1.5}
[data-problem-id^="archimedes-winter-"] .arch-model-entry a{display:inline-flex;gap:12px;align-items:center;min-height:44px;padding:10px 16px;border:1px solid var(--ink-3);border-radius:999px;background:var(--play-stage);color:var(--ink);font:600 16px/1.4 var(--font);text-decoration:none}
[data-problem-id^="archimedes-winter-"] .arch-model-entry a:hover{border-color:var(--accent);color:var(--accent)}
[data-problem-id^="archimedes-winter-"] .arch-model-entry a:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
@media(max-width:480px){[data-problem-id^="archimedes-winter-"] .arch-model-entry{padding:16px}[data-problem-id^="archimedes-winter-"] .arch-model-entry a{width:100%;justify-content:space-between}}

/* Reuse the accepted lab design without changing its Archimedes consumers. */
.arch-lab [data-mf-lab-body]{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;min-width:0}
.arch-lab [data-mf-lab-body]>label{display:grid;gap:8px}
.arch-lab [data-mf-lab-body]>.arch-stage{margin:0}
.arch-lab [data-mf-lab-body]>.arch-actions{margin:0}

.arch-lab .mf24-number-grid,.arch-lab .mf24-chest-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:500px;width:100%;margin:auto}
.arch-lab .mf24-number-cell{display:grid;gap:5px;text-align:center;padding:10px;border:1px solid var(--arch-soft-line);border-radius:12px;background:var(--arch-surface)}
.arch-lab .mf24-number-cell span{font-size:12px;color:var(--arch-muted)}
.arch-lab .mf24-number-cell input{width:100%;text-align:center;box-sizing:border-box}
.arch-lab .mf24-error{background:var(--arch-bad-bg)!important;outline:2px solid var(--arch-bad);outline-offset:-2px}
.arch-lab .mf24-chest{display:grid;gap:10px;align-content:start;text-align:center;border:1px solid var(--arch-soft-line);border-radius:12px;padding:10px;background:var(--arch-surface)}
.arch-lab .mf24-chest>button{font-size:26px;font-weight:700;min-height:60px;border-radius:12px}
.arch-lab .mf24-chest button[aria-pressed=true]{outline:3px solid var(--arch-focus)}
.arch-lab .mf24-chest label{display:flex;align-items:center;justify-content:center;gap:5px;min-height:44px;font-size:14px;cursor:pointer}
.arch-lab .mf24-chest input[type=checkbox]{width:22px;height:22px;accent-color:var(--arch-primary-bg);flex:none}
.arch-lab .mf24-selected{background:var(--arch-pressed-bg);border:2px solid var(--arch-pressed-line);padding:9px}
.arch-lab .mf24-outcomes{width:100%;font-size:16px}
.arch-lab .mf24-outcomes th,.arch-lab .mf24-outcomes td{padding:8px}
.arch-lab .mf24-pupil-view{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px;align-items:center}
.arch-lab .mf24-pupil-tools{display:grid;gap:14px;min-width:0}
.arch-lab .mf24-neighbours{display:flex;flex-wrap:wrap;justify-content:center;gap:6px}
.arch-lab .mf24-neighbours button{min-width:64px;color:var(--arch-ink);border-radius:10px}
.arch-lab .mf24-neighbours button[aria-pressed=true]{outline:3px solid var(--arch-focus)}
.arch-lab .mf24-counts{color:var(--arch-ink);font-weight:650;font-variant-numeric:tabular-nums;margin:0}
.arch-lab textarea{box-sizing:border-box;display:block;width:100%;font:18px/1.5 monospace;padding:10px;background:var(--arch-surface);color:var(--arch-ink);border:1px solid var(--arch-field-line);border-radius:10px;margin:8px 0}
.arch-lab .mf24-block-fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.arch-lab .mf24-block-fields label{display:grid;gap:8px;font-size:14px}
.arch-lab .mf24-block-fields input{width:100%;box-sizing:border-box;text-align:center}
.arch-lab .mf24-three{width:100%;height:360px;border:1px solid var(--arch-soft-line);border-radius:12px;overflow:hidden;position:relative;background:var(--arch-surface)}
.arch-lab .mf24-three canvas{display:block;max-width:100%;touch-action:pan-y}
.arch-lab .mf24-block-readout{display:grid;gap:8px;margin:0}
.arch-lab .mf24-block-readout p{margin:0}
.arch-lab .mf24-cube-static{max-width:420px;margin:auto}
@media(max-width:600px){.arch-lab .mf24-pupil-view{grid-template-columns:minmax(0,1fr)}.arch-lab .mf24-pupil-view svg{max-height:280px}.arch-lab .mf24-three{height:300px}.arch-lab .mf24-block-fields{grid-template-columns:minmax(0,1fr)}}
@media(max-width:380px){.arch-lab .mf24-chest-grid{gap:6px}.arch-lab .mf24-chest{padding:6px}.arch-lab .mf24-selected{padding:5px}.arch-lab .mf24-chest label{flex-wrap:wrap;font-size:12px}.arch-lab .mf24-number-grid{gap:6px}.arch-lab .mf24-number-cell{padding:6px}}
.arch-lab .mf24-cut-board{position:relative;width:100%;aspect-ratio:495/220;max-width:700px;margin:auto}
.arch-lab .mf24-cut-board svg{position:absolute;inset:0;width:100%;height:100%}
.arch-lab button.mf24-cut-point{position:absolute;transform:translate(-50%,-50%);width:8.89%;min-height:0;min-width:0;aspect-ratio:1;padding:0;border-radius:50%;border:0;background:transparent;color:transparent;line-height:1;font-size:1px}
.arch-lab button.mf24-cut-point:focus-visible{background:var(--arch-pressed-bg);outline:3px solid var(--arch-focus);color:var(--arch-ink);font-size:24px}
.arch-lab button.mf24-cut-point:hover{background:color-mix(in srgb,var(--arch-pressed-bg) 70%,transparent)}
.arch-lab .arch-zoomed .mf24-cut-board{min-width:495px}
.arch-lab .mf24-target svg{min-height:220px;max-height:420px}
.arch-lab .mf24-chest>button{min-width:0;width:100%;padding-inline:4px}
.arch-lab .mf24-chest label{font-size:13px;gap:4px;flex-wrap:wrap}
.arch-lab .mf24-cell-board{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:2px;width:100%;max-width:560px;margin:auto}
.arch-lab .arch-zoomed .mf24-cell-board{min-width:384px}
.arch-lab .mf24-grid-cell{padding:0;min-width:0;min-height:44px;aspect-ratio:1;border-radius:4px;font-weight:700;border:1px solid var(--arch-field-line);background:var(--arch-surface);color:var(--arch-ink)}
.arch-lab .mf24-grid-cell[data-part="empty"]{border-color:transparent;background:transparent;color:var(--arch-muted)}
.arch-lab .mf24-grid-cell[data-part="1"]{background:var(--arch-pressed-bg);color:var(--arch-primary-bg)}
.arch-lab .mf24-grid-cell[data-part="2"]{background:var(--arch-accent-soft,#ffdfb2);color:var(--arch-accent-ink,#613600)}
.arch-lab .mf24-grid-cell.mf24-added{outline:3px solid var(--arch-focus);outline-offset:-3px}
.arch-lab .mf24-cell-overlay{display:block;max-height:260px;max-width:300px;margin:auto}
.arch-lab .mf24-comb-svg{display:block;width:100%;max-height:240px;border:1px solid var(--arch-soft-line);border-radius:8px;background:var(--arch-surface)}
.arch-lab .mf24-comb-field,.arch-lab .mf24-comb-fields label{display:grid;gap:8px}
.arch-lab .mf24-comb-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.arch-lab .mf24-comb-fields input,.arch-lab .mf24-comb-field input{width:100%;box-sizing:border-box}

.arch-lab .arch25-coin-board{position:relative;width:min(100%,480px);aspect-ratio:1;margin:auto;min-width:280px}.arch25-coin-board svg{width:100%;height:100%;display:block}.arch-lab .arch25-coin-board button{position:absolute;transform:translate(-50%,-50%);padding:2px;min-width:44px;width:9.5%;font-size:14px;line-height:1.1;min-height:44px}.arch-lab .arch25-coin-board button[aria-pressed=true]{background:var(--arch-fill);border-color:var(--arch-accent)}.arch25-branch-list{display:grid;gap:8px}.arch25-cube-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:3px;max-width:420px;margin:auto}.arch-lab .arch25-cube-grid button{border-radius:4px;padding:4px;font-size:13px;aspect-ratio:1;min-width:0}.arch-lab .arch25-cube-grid .arch25-red{background:#b91c1c;color:#fff}.arch-lab .arch25-cube-grid button[aria-pressed=true]{outline:3px solid var(--arch-focus);outline-offset:-3px}.arch25-three{min-height:250px;width:100%;overflow:hidden;border:1px solid var(--arch-grid);border-radius:10px}.arch25-three canvas{display:block;width:100%;touch-action:none}.arch25-stencil{display:block;width:100%;height:auto}.arch25-stencil [role=button]{cursor:pointer}.arch25-stencil [role=button]:focus-visible polygon{stroke:var(--arch-focus);stroke-width:5}.arch-lab .arch-zoomed .arch25-stencil{min-width:420px}.arch-lab .arch-zoomed .arch25-cube-grid{min-width:300px}.arch25-controls{display:grid;gap:10px}.arch25-strip{display:flex;flex-wrap:wrap;gap:6px}.arch-lab .arch25-strip button{border-radius:8px}.arch25-board10{display:grid;width:100%;grid-template-rows:repeat(10,minmax(0,1fr));grid-template-columns:repeat(10,1fr);aspect-ratio:1;max-width:500px;margin:auto}.arch25-board10>div{border:1px solid var(--arch-grid);display:grid;place-items:center;font-size:14px}.arch25-board10 .arch25-double{background:var(--arch-piece-b)}.arch25-board10 .arch25-invalid{background:var(--arch-bad-bg)}.arch25-board10 .arch25-once{background:var(--arch-fill)}.arch25-calendar{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:5px}.arch-lab .arch25-calendar button{padding:4px;border-radius:8px;min-width:0;font-size:14px;min-height:52px}.arch25-calendar .arch25-invalid{outline:2px solid var(--arch-bad)}.arch25-expression{display:flex;flex-wrap:wrap;align-items:center;gap:3px;font-size:24px;font-weight:600}.arch-lab .arch25-expression select{font-size:18px;padding:3px;width:52px}.arch25-expression>span{min-width:14px}.arch25-fruit-count{font-size:24px;display:flex;gap:12px;flex-wrap:wrap}.arch25-fruit-count span{padding:10px;border:1px solid var(--arch-grid);border-radius:12px}.arch25-simple-svg{display:block;width:100%;height:auto}.arch25-selectors{display:grid;gap:8px}.arch25-selectors label{display:flex;align-items:center;justify-content:space-between;gap:6px;flex-wrap:wrap}@media(max-width:400px){.arch25-calendar{grid-template-columns:repeat(4,minmax(0,1fr))}}

.arch-lab .arch-zoomed .arch25-coin-board{min-width:360px;width:360px}.arch25-stencil{max-height:none!important}

.arch-lab .arch25-cube-grid .arch25-white{background:#f4f1e8;color:#172b3d}

/* The right pan, the selected-weight list and each toggle describe one exact selection. */
.arch-lab .arch25-balance{max-width:520px;margin:auto}
.arch-lab .arch25-weight-tray{padding:16px;border:2px solid var(--arch-pressed-line);border-radius:16px;background:var(--arch-surface);color:var(--arch-ink);display:grid;gap:10px}
.arch-lab .arch25-selected-weights{display:flex;flex-wrap:wrap;gap:8px}
.arch-lab .arch25-weight-chip{display:inline-block;border:1px solid var(--arch-pressed-line);border-radius:8px;background:var(--arch-pressed-bg);padding:6px 10px;font-size:18px;font-weight:600;white-space:nowrap}
.arch-lab .arch25-weight-total{margin:0;font-size:24px;font-weight:700;line-height:1.35}
.arch-lab .arch25-weights{display:grid;grid-template-columns:repeat(auto-fit,minmax(78px,1fr));gap:8px}
.arch-lab .arch25-weights button{padding:10px 6px;min-height:48px;font-size:18px;border-width:2px}
.arch-lab .arch25-weights button[aria-pressed=true]{background:var(--arch-primary-bg);color:var(--arch-primary-ink);border-color:var(--arch-primary-bg);font-weight:700}
.arch-lab .arch25-weight-check{display:inline-block;width:1em;text-align:center}

/* A guided example never overwrites the student's inventory or its undo history. */
.arch-lab .arch25-fruit h3{scroll-margin-block:120px;margin:0;color:var(--arch-ink);font-size:22px;line-height:1.35}
.arch-lab .arch25-fruit p{margin:0;line-height:1.6}
.arch-lab .arch25-fruit-inventory{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:0}
.arch-lab .arch25-fruit-inventory>div{min-width:0;padding:12px 8px;border:1px solid var(--arch-field-line);border-radius:14px;background:var(--arch-surface);color:var(--arch-ink);text-align:center}
.arch-lab .arch25-fruit-inventory dt{font-size:14px;line-height:1.35;overflow-wrap:normal}
.arch-lab .arch25-fruit-inventory dd{margin:6px 0;font-size:30px;font-weight:700;line-height:1.2}
.arch-lab .arch25-fruit-inventory .arch25-fruit-changed{border:2px solid var(--arch-pressed-line);background:var(--arch-pressed-bg);padding:11px 7px}
.arch-lab .arch25-fruit-delta{display:block;font-size:12px;line-height:1.4;color:var(--arch-muted)}
.arch-lab .arch25-fruit-total{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-radius:14px;background:var(--arch-pressed-bg);border:1px solid var(--arch-pressed-line);color:var(--arch-ink)}
.arch-lab .arch25-fruit-total strong{font-size:32px;line-height:1.2}
.arch-lab .arch25-example-progress{font-weight:600;color:var(--arch-muted);font-size:14px}
.arch-lab .arch25-fruit-operation{display:grid;gap:8px;padding:14px;border-left:4px solid var(--arch-accent);border-radius:0 12px 12px 0;background:var(--arch-surface);color:var(--arch-ink)}
.arch-lab .arch25-fruit-operation strong{font-size:18px;line-height:1.5}
.arch-lab .arch25-fruit-operation span{font-weight:700;color:var(--arch-good)}
.arch-lab .arch25-fruit-cycle{display:grid;gap:8px;padding:14px;border:1px solid var(--arch-soft-line);border-radius:14px;background:var(--arch-surface);color:var(--arch-ink)}
.arch-lab .arch25-fruit-cycle p{padding:6px;border-radius:6px}
.arch-lab .arch25-fruit-cycle .arch25-current-exchange{background:var(--arch-pressed-bg);font-weight:700;outline:2px solid var(--arch-pressed-line)}
.arch-lab .arch25-example-nav>*{flex:1 1 180px}
.arch-lab .arch25-fruit-accounting{border-top:1px solid var(--arch-soft-line);padding-top:12px;font-size:14px}
.arch-lab .arch25-fruit-accounting summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:600}
.arch-lab .arch25-fruit-rules>*{text-align:left}
@media(max-width:360px){.arch-lab .arch25-fruit-inventory{gap:5px}.arch-lab .arch25-fruit-inventory>div{padding:10px 4px}.arch-lab .arch25-fruit-inventory .arch25-fruit-changed{padding:9px 3px}.arch-lab .arch25-fruit-inventory dt{font-size:12px}.arch-lab .arch25-fruit-delta{font-size:11px}}

.arch-lab .mf26-phone-slots{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:3px;font-size:clamp(16px,4vw,24px);text-align:center;font-variant-numeric:tabular-nums}.arch-lab .mf26-phone-slots span{border-bottom:2px solid var(--arch-field-line);padding:8px 0}.arch-lab .mf26-keypad{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px}.arch-lab .mf26-keypad button{padding:8px 0}.arch-lab .mf26-swatch{display:inline-block;width:16px;height:16px;border:1px solid var(--arch-fig-line);flex:0 0 auto}.arch-lab .mf26-cut-board{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));width:100%;gap:0}.arch-lab .mf26-cell{border:1px solid var(--arch-fig-line);border-radius:0;aspect-ratio:1;min-width:0;min-height:0;padding:0;background:var(--arch-piece-b);color:var(--arch-ink)}.arch-lab .mf26-cell[aria-pressed=true]{background:var(--arch-piece-a)}.arch-lab .arch-zoomed .mf26-cut-board{min-width:360px}.arch-lab .mf26-chest-inputs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.arch-lab .mf26-chest-inputs label{display:grid;gap:5px;font-size:14px}.arch-lab .mf26-chest-inputs input{width:100%}.arch-lab .mf26-chests{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.arch-lab .mf26-chest{display:grid;justify-items:center;gap:4px;padding:10px 4px;background:var(--arch-surface);border:2px solid var(--arch-field-line);color:var(--arch-ink);border-radius:12px}.arch-lab .mf26-chest[aria-pressed=true]{border-color:var(--arch-pressed-line);background:var(--arch-pressed-bg)}.arch-lab .mf26-chest-name{font-size:13px}.arch-lab .mf26-coin-bar{width:42px;height:70px;border:1px solid var(--arch-fig-line);border-radius:5px;background:linear-gradient(to top,var(--arch-piece-b) var(--coins),transparent var(--coins))}.arch-lab .mf26-cube-buttons{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}.arch-lab .mf26-cube-buttons button{padding:8px 2px}.arch-lab .mf26-clock-fields{display:grid;grid-template-columns:1fr 1fr;gap:8px}.arch-lab .mf26-clock-fields label{display:grid;gap:6px}.arch-lab .mf26-clock-fields select{width:100%}.arch-lab .mf26-clocks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.arch-lab .mf26-hourglass{text-align:center;min-width:0}.arch-lab .mf26-hourglass svg{width:100%;max-width:110px;height:150px;margin:auto}.arch-lab .mf26-hourglass h4{font-size:14px;margin:5px 0}.arch-lab .mf26-hourglass p{font-size:13px;margin:4px 0}.arch-lab .mf26-clock-time{font-size:26px;font-variant-numeric:tabular-nums;font-weight:650}.arch-lab .mf26-clock-event{min-height:4em}.arch-lab .mf26-time-control{display:grid;grid-template-columns:minmax(0,1fr);gap:8px}.arch-lab .mf26-clock-actions{display:flex;flex-wrap:wrap;gap:8px}.arch-lab .mf26-clock-actions button{flex:1 1 auto}.arch-lab details>summary{cursor:pointer;min-height:44px;padding:10px 0}.arch-lab .mf26-log-current{font-weight:650;color:var(--arch-label)}
@media(max-width:420px){.arch-lab .mf26-clock-fields{grid-template-columns:1fr}.arch-lab .mf26-keypad{grid-template-columns:repeat(6,minmax(0,1fr))}.arch-lab .mf26-chest-inputs{grid-template-columns:repeat(2,minmax(0,1fr))}.arch-lab .mf26-chests{gap:5px}.arch-lab .mf26-chest .arch-help{font-size:12px}}

/* One paper-cutting workshop; every rule comes from y2026-cut.mjs. */
.arch-lab .mf26-cut-studio{--cut-paper:var(--arch-surface);color:var(--arch-ink)}
.arch-lab .mf26-cut-studio .mf26-cut-intro{font-size:clamp(17px,2.4vw,21px);line-height:1.5;max-width:46em;margin:0 0 18px}
.arch-lab .mf26-cut-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.arch-lab .mf26-cut-toolbar .arch-toggle{margin:0}.arch-lab .mf26-cut-toolbar button{min-height:46px;font-weight:700}
.arch-lab .mf26-cut-counts{display:flex;gap:8px;flex-wrap:wrap;font-weight:700;font-variant-numeric:tabular-nums}
.arch-lab .mf26-cut-counts span{padding:8px 12px;border:1px solid var(--arch-fig-line);border-radius:10px;background:var(--arch-piece-a)}
.arch-lab .mf26-cut-counts [data-part=B]{background:var(--arch-piece-b)}
.arch-lab .mf26-cut-mode{font-size:14px;line-height:1.5;color:var(--arch-muted);margin:12px 0}
.arch-lab .mf26-cut-mode.is-example{color:var(--arch-ink);border-left:3px solid var(--arch-accent,#a86427);padding-left:12px}
.arch-lab .mf26-cut-paper{padding:20px 10px;background:var(--cut-paper);border:1px solid var(--arch-field-line);border-radius:18px;box-shadow:0 8px 24px #0000000a}
.arch-lab .mf26-cut-studio .mf26-cut-board{grid-template-columns:repeat(8,minmax(44px,1fr));grid-template-rows:repeat(3,auto);width:min(100%,640px);margin:auto;gap:0}
.arch-lab .mf26-cut-studio .mf26-cell{grid-column:var(--cut-col);grid-row:var(--cut-row);min-width:44px;min-height:44px;aspect-ratio:1;border:1px solid var(--arch-fig-line);border-radius:3px;font-size:clamp(14px,2.6vw,20px);font-weight:700;box-shadow:inset 0 1px 0 #ffffff35;transition:background-color .14s ease,box-shadow .14s ease;touch-action:manipulation}
.arch-lab .mf26-cut-studio .mf26-cell:hover{box-shadow:inset 0 0 0 3px var(--arch-pressed-line)}
.arch-lab .mf26-cut-studio .mf26-cell:focus-visible{position:relative;z-index:1;outline:3px solid var(--arch-primary-bg);outline-offset:2px}
.arch-lab .mf26-cut-turn-note{display:none}.arch-lab .mf26-cut-keyboard{font-size:13px;color:var(--arch-muted);line-height:1.5;margin:10px 0 16px}
.arch-lab .mf26-cut-actions{margin:12px 0}.arch-lab .mf26-cut-actions button{min-height:46px}
.arch-lab .mf26-cut-overlay{border:1px solid var(--arch-field-line);background:var(--arch-surface);border-radius:18px;padding:16px;margin:18px 0}
.arch-lab .mf26-cut-overlay[hidden]{display:none}.arch-lab .mf26-cut-overlay svg{display:block;width:100%;max-height:360px}
.arch-lab .mf26-cut-phase{font-size:18px;font-weight:700;line-height:1.4;margin:0;text-align:center}
.arch-lab .mf26-cut-motion{display:grid;grid-template-columns:auto minmax(100px,1fr);align-items:center;gap:14px}
.arch-lab .mf26-cut-motion input{width:100%;min-height:44px;accent-color:var(--arch-primary-bg)}
.arch-lab .mf26-cut-collection{border-top:1px solid var(--arch-field-line);padding-top:18px;margin-top:20px}
.arch-lab .mf26-cut-collection h4{font-size:17px;margin:0 0 12px}.arch-lab .mf26-cut-saved{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.arch-lab .mf26-cut-saved>p{grid-column:1/-1;margin:0}.arch-lab .mf26-cut-thumbnail{display:grid;gap:6px;align-items:center;min-width:0;min-height:70px;background:var(--arch-surface);border:1px solid var(--arch-field-line);border-radius:12px;padding:10px;cursor:pointer;color:var(--arch-ink)}
.arch-lab .mf26-cut-thumbnail svg{width:100%;display:block}.arch-lab .mf26-cut-thumbnail span{font-size:13px;font-weight:650}
.arch-lab .mf26-cut-thumbnail:hover{border-color:var(--arch-primary-bg)}.arch-lab .mf26-cut-thumbnail:focus-visible{outline:3px solid var(--arch-primary-bg);outline-offset:2px}
.arch-lab .mf26-cut-examples{margin-top:16px;border-top:1px solid var(--arch-field-line);padding-top:8px}.arch-lab .mf26-cut-examples>summary{font-weight:650}
@media(max-width:480px){.arch-lab .mf26-cut-studio .mf26-cut-board{grid-template-columns:repeat(3,minmax(44px,1fr));grid-template-rows:repeat(8,auto);width:168px}.arch-lab .mf26-cut-studio .mf26-cell{grid-column:var(--cut-mobile-col);grid-row:var(--cut-mobile-row);min-height:48px;font-size:17px}.arch-lab .mf26-cut-paper{padding:16px}.arch-lab .mf26-cut-turn-note{display:block;font-size:12px;color:var(--arch-muted);line-height:1.5}.arch-lab .mf26-cut-motion{grid-template-columns:1fr;gap:6px}.arch-lab .mf26-cut-overlay{padding:12px}.arch-lab .mf26-cut-saved{gap:6px}.arch-lab .mf26-cut-thumbnail{padding:7px 4px}.arch-lab .mf26-cut-counts{font-size:14px}}
@media(prefers-reduced-motion:reduce){.arch-lab .mf26-cut-studio .mf26-cell{transition:none}}