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/* ---------- Figure 69: merge diagram ---------- */
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/* ---------- Figure 70: four measured panels ---------- */
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/* ---------- Table 37: selection and phone cards ---------- */
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/* ---------- Table 37 companion: Equation 85 across concentration ---------- */
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.s21-var-body{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:22px;align-items:start;padding:16px 18px 12px;background:var(--cream-hi);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-card)}
.s21-var-chart{outline:none;border-radius:10px;cursor:ew-resize}
.s21-var-chart:focus-visible{outline:2.5px solid var(--pink);outline-offset:4px}
.s21-vline{fill:none;stroke:color-mix(in srgb,var(--c) 70%,#0a2b35);stroke-width:2;stroke-linejoin:round;transition:stroke-width .2s}
.s21-vline.is-sel{stroke-width:3.4}
.s21-vpoint{fill:var(--cream-hi);stroke:color-mix(in srgb,var(--c) 70%,#0a2b35);stroke-width:1.6}
.s21-vpoint.is-sel{fill:color-mix(in srgb,var(--c) 40%,#fffaf4)}
.s21-guide{stroke:var(--ink-soft);stroke-width:1;stroke-dasharray:2 3;opacity:.6}
.s21-cursor line{stroke:var(--pink-deep);stroke-width:1.3;stroke-dasharray:3 3}
.s21-cursor circle{fill:var(--cream-hi);stroke:color-mix(in srgb,var(--c) 75%,#0a2b35);stroke-width:1.8}
.s21-cursor circle.is-sel{fill:var(--pink);stroke:var(--cream-hi);stroke-width:2}
.report-content .s21-fig .s21-var-head{margin:2px 0 10px;min-height:3.3em;font-size:14px;color:var(--ink-deep);font-variant-numeric:tabular-nums}
.s21-var-head span{color:var(--muted);font-size:12.5px}
.s21-var-cards{display:grid;gap:7px}
.s21-var-cards button{display:grid;grid-template-columns:1fr auto;gap:0 10px;align-items:baseline;width:100%;padding:8px 11px;border:1px solid var(--line);border-left:4px solid var(--c);border-radius:8px;background:var(--cream);color:var(--ink);font:inherit;font-size:13px;text-align:left;cursor:pointer}
.s21-var-cards b{font-size:16px;color:var(--ink-deep);font-variant-numeric:tabular-nums}
/* Always present (no layout jump while scrubbing); darker when the cursor is on the measured point. */
.s21-var-cards em{grid-column:1/-1;font-style:normal;font-size:11.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.s21-var-cards em.is-here{color:var(--pink-deep)}
.s21-var-cards .is-sel button{background:var(--cream-hi);border-color:var(--teal-line);border-left-color:var(--pink);box-shadow:0 1px 3px rgba(10,43,53,.12)}
.s21-var-cards button:focus-visible{outline:2.5px solid var(--pink);outline-offset:2px}
.s21-sw--line{height:0;border-top:3px solid var(--teal);border-radius:0;width:18px}
.s21-sw--diamond{width:9px;height:9px;border-radius:1px;transform:rotate(45deg);background:var(--cream-hi);box-shadow:inset 0 0 0 1.6px var(--teal-deep)}
@container s21 (max-width:700px){
 .s21-var-body{grid-template-columns:1fr;gap:14px;padding:12px 10px 10px}
 .s21-var-cards{grid-template-columns:1fr 1fr}
}
/* Two narrow cards per row: name on its own line, value under it, so
   "Width-proportional" and "Equal branch mass" never break mid-name. */
@container s21 (max-width:460px){
 .s21-var-cards button{grid-template-columns:1fr;gap:1px 0;padding:8px 10px}
 .s21-var-cards span{font-size:12.5px;line-height:1.35}
 .s21-var-cards b{font-size:17px}
 .s21-var-cards .s21-at{display:none}/* the legend names the measured Σp² */
}

/* The takeaway source link may wrap on phones: shared rule in site.css (2026-10-10). */

/* On phones Table 37 becomes cards and has no visible header, so its sticky
   header clone (site.js) must not appear. */
@media(max-width:700px){.table-sticky:has(table.s21-conventions){display:none!important}}


@media(prefers-reduced-motion:reduce){
 .s21-fig *,.s21-fig *::before{transition:none!important;animation:none!important}
}