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#1f8a7a;border-radius:100% 100% 0 0;width:55%;height:45%;position:absolute;top:8%;left:5%}.mental-lead{text-align:center;margin-top:0}.mental-hint{color:var(--ink-soft);margin:.5rem 0 0;font-weight:700}.compensation-line{margin:.75rem 0 0;font-family:Fredoka,sans-serif;font-size:clamp(1.5rem,5vw,2rem);font-weight:600}.comp-fixed{color:var(--teal-deep)}.comp-blank{color:var(--coral-deep)}.mental-step-label{margin:.65rem 0 0;font-weight:800}.compare-prompt .compare-slot{color:var(--coral-deep)}.choice-row{flex-wrap:wrap;justify-content:center;gap:.65rem;max-width:360px;margin:0 auto;display:flex}.choice-btn{background:var(--panel);min-width:4rem;box-shadow:var(--shadow);color:var(--ink);border-radius:16px;padding:.85rem 1.25rem;font-family:Fredoka,sans-serif;font-size:1.75rem;font-weight:600}.choice-btn.wide{min-width:6rem;font-size:1.25rem}.word-prompt{text-align:left;margin:0;font-size:1.05rem;line-height:1.45}.dual-pad{flex-wrap:wrap;justify-content:center;gap:1rem;display:flex}.dual-labels,.field-label{color:var(--ink-soft);justify-content:space-around;margin:0 0 .35rem;font-size:.85rem;font-weight:800;display:flex}.field-label{justify-content:center}.chapter2-strategy-btn{text-align:left;flex-direction:column;align-items:flex-start;gap:.25rem;display:flex}.chapter2-strategy-title{font-family:Fredoka,sans-serif;font-size:1.25rem}.chapter2-strategy-blurb{opacity:.9;font-size:.95rem;font-weight:600}.chapter2-tag{text-transform:uppercase;letter-spacing:.05em;color:var(--teal-deep);margin:0 0 .35rem;font-size:.85rem;font-weight:800}.chapter2-question{font-size:clamp(2rem,6vw,2.8rem)}.chapter2-practice .mode-switch{flex-wrap:wrap}.number-line-visual{margin-bottom:1rem;padding:.75rem .25rem 1.5rem}.number-line-track{background:#1f8a7a1f;border:2px solid #1f8a7a40;border-radius:999px;height:3.5rem;position:relative}.number-line-tick{flex-direction:column;align-items:center;height:100%;display:flex;position:absolute;top:0;transform:translate(-50%)}.number-line-tick-mark{background:#1b3a3f59;width:2px;height:.85rem;margin-top:.35rem}.number-line-tick-label{color:var(--ink-soft);margin-top:.15rem;font-size:.65rem;font-weight:800}.number-line-hop{background:linear-gradient(90deg, var(--sun), var(--teal));opacity:.85;border-radius:999px;height:.35rem;position:absolute;top:.55rem}.number-line-marker{width:2rem;height:2rem;box-shadow:var(--shadow);border-radius:50%;place-items:center;font-family:Fredoka,sans-serif;font-size:.85rem;font-weight:600;display:grid;position:absolute;top:50%;transform:translate(-50%,-50%)}.number-line-marker.start{background:var(--ink-soft);width:.65rem;height:.65rem}.number-line-marker.current{background:var(--coral);color:#fff;z-index:2}