#caliper-family{max-width:310px;font:inherit;font-weight:550;color:var(--ink);padding:5px 24px 5px 8px;background:transparent;border:1px solid var(--line);border-radius:4px}
#instrument-name{display:none}
#vernier-panel{color:var(--ink)}
.v-workspace{border-block:1px solid var(--line)}
#vernier-panel .toolbar{flex-wrap:wrap}
.v-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(300px,1fr);grid-template-areas:"bench evidence" "lesson evidence";column-gap:36px;row-gap:10px;padding:18px 0;align-items:start}
.v-bench{grid-area:bench;min-width:0}
.v-lesson{grid-area:lesson;min-width:0}
.v-bench-heading{display:flex;justify-content:space-between;gap:12px;align-items:baseline}
.v-bench-heading h2{font-size:1rem;margin:0}
#v-phase{font-weight:550}
#v-apparatus{width:100%;max-height:250px;display:block;overflow:visible;touch-action:none;user-select:none;margin:12px 0 4px;transform-origin:0 0}
#v-carriage{cursor:grab}
#v-carriage:active{cursor:grabbing}
#v-specimen{cursor:pointer}
#v-apparatus [tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
#v-hint{font-size:.9375rem;line-height:1.6;margin:8px 0 0;max-width:66ch}
.v-object-name{font-size:18px;fill:#365563}
.v-main-tick,.v-vernier-tick{stroke:#334e5b;stroke-width:.45}
.v-engraving{font-size:3.2px;fill:#334e5b;text-anchor:middle}
.v-contact{stroke:var(--accent);stroke-width:2}
.v-scale-window{stroke:var(--accent);stroke-width:1;stroke-dasharray:2 2;fill:none;pointer-events:none}
.v-main-tick.v-focus,.v-vernier-tick.v-focus{stroke:var(--accent);stroke-width:.8}
.v-main-guide{stroke:var(--accent);stroke-width:.35;fill:none}
.v-match-guide{stroke:#b05a28;stroke-width:.55;stroke-dasharray:1 1}
.v-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin:10px 0 0}
.v-actions:not(:has(button:not([hidden]))){display:none}
#v-next{background:var(--accent);border-color:var(--accent);color:white}
#v-back,#v-practice{border:0;background:transparent;color:var(--accent);padding:6px 0;text-decoration:underline;text-underline-offset:4px}
#v-practice{font-size:.875rem}
.v-reading-layout{display:flex;gap:24px;align-items:center}
#v-lens-wrap{width:400px;max-width:65%;flex:none;transform-origin:0 0}
#v-lens{display:block;width:100%;height:auto;overflow:visible}
#v-lens .v-engraving{font-size:3.8px}
#v-apparatus .v-engraving{fill:#526b77}
#v-working{font-size:1.05rem;line-height:1.7;min-width:0;flex:1;margin:0;font-variant-numeric:tabular-nums}
#v-working strong{color:var(--accent);font-weight:650}
#v-scale-note{font-size:.8125rem;line-height:1.6;color:var(--muted);max-width:66ch;margin:8px 0}
#v-evidence{grid-area:evidence;min-height:0;border-left:1px solid var(--line);padding-left:26px}
#v-evidence .record-heading h2{font-size:1rem}
#v-record-count{white-space:nowrap;flex:none;font-size:.8125rem;color:var(--muted)}
#v-evidence td,#v-evidence th{font-size:.875rem}
#v-rows button{padding:2px 6px;border:0;background:transparent;color:var(--accent);text-decoration:underline;text-underline-offset:3px;font-size:inherit}
#v-empty,#v-zero{font-size:.875rem;line-height:1.6;color:var(--muted)}
.v-selected{background:#e2efe9}
#v-practice-form{margin-top:12px}
#v-practice-form input{max-width:100px;font:inherit;padding:6px;border:1px solid var(--line);border-radius:4px;background:transparent;color:var(--ink)}
#v-feedback{font-size:.875rem;line-height:1.6}
#vernier-panel footer p{font-size:.8125rem}
/* Reading reframes the whole stage: apparatus and sparse records become a
   compact source column; the unchanged scale gains the main teaching area. */
#vernier-panel:not([data-step="0"]) .v-layout{grid-template-columns:minmax(280px,.85fr) minmax(0,1.6fr);grid-template-areas:"bench lesson" "evidence lesson";row-gap:18px}
#vernier-panel:not([data-step="0"]) #v-evidence{border-left:0;border-top:1px solid var(--line);padding:12px 0 0}
#vernier-panel:not([data-step="0"]) #v-apparatus{margin-block:10px 4px}
#vernier-panel:not([data-step="0"]) #v-zero{margin-bottom:0}
#vernier-panel:not([data-step="0"]) #v-evidence table{display:block;max-height:150px;overflow:auto}
#vernier-panel:not([data-step="0"]) #v-evidence thead,#vernier-panel:not([data-step="0"]) #v-evidence tbody{display:table;width:100%;table-layout:fixed}
#vernier-panel:not([data-step="0"]) #v-evidence th:nth-child(1),#vernier-panel:not([data-step="0"]) #v-evidence td:nth-child(1){width:35px}
.v-zooming #v-hint,.v-zooming #v-working,.v-zooming #v-scale-note{visibility:hidden}
@media(max-width:760px){
 .v-layout,#vernier-panel:not([data-step="0"]) .v-layout{grid-template-columns:1fr;grid-template-areas:"bench" "lesson" "evidence";gap:20px}
 #v-evidence{border-left:0;border-top:1px solid var(--line);padding:16px 0 0}
 #caliper-family{max-width:100%}
 .v-bench-heading{flex-wrap:wrap;gap:6px}
 .v-reading-layout{display:block}
 #v-lens-wrap{max-width:100%;width:400px}
 #v-working{margin-block:10px}
 #vernier-panel:not([data-step="0"]) #v-apparatus{max-height:150px}
}