.second-grade-section{margin:38px 0;padding:28px;background:#fff4e3;border:2px solid #dfc290;border-radius:26px}.second-grade-section h2{font:900 30px var(--font);margin:8px 0 14px;color:#79501f}.second-grade-section p{line-height:1.6;max-width:620px}.second-grade-section .first-grade-card{border-color:#dfc290}.place-value-preview{display:grid;gap:10px;flex:0 0 145px;padding:16px;background:#fff4e3;border-radius:20px;color:#79501f;font:900 24px var(--font);text-align:center}.place-value-preview small{font:800 14px var(--font)}.second-grade-trail{display:grid;grid-template-columns:repeat(4,44px);justify-content:center;gap:8px;margin:16px 0 20px}.second-grade-trail button{min-height:44px;border:1px solid #c9a877;border-radius:13px;background:#fff8ed;color:#79501f;font:800 17px var(--font)}.second-grade-trail button[aria-pressed=true]{background:#89602c;color:white}.place-target{text-align:center;margin:18px 0 8px}.place-target>span{font-weight:800;display:block}.place-target>strong{font:900 54px var(--font);color:#79501f}.place-instructions{max-width:570px;line-height:1.5}.place-builder{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;width:100%;max-width:690px;margin:18px 0}.place-column{min-width:0;padding:12px 8px;background:#fff;border:2px solid #d1d9d8;border-radius:18px}.place-column h3{font:900 20px var(--font);margin:0 0 10px}.place-key{display:flex;align-items:center;justify-content:center;gap:10px;min-height:52px;font-size:14px;font-weight:800}.place-block{display:block;flex-shrink:0}.place-block rect{fill:#e7d2ae;stroke:#936c34;stroke-width:1}.place-block path{fill:none;stroke:#936c34;stroke-width:1}.hundred-block{width:60px;height:60px}.ten-block{width:6px;height:60px}.ten-block rect{fill:#d4e6f0;stroke:#396d89}.ten-block path{stroke:#396d89}.one-block{width:6px;height:6px}.one-block rect{fill:#e1d8ee;stroke:#765299}.place-key{min-height:60px}.place-controls{display:grid;grid-template-columns:56px minmax(30px,1fr) 56px;gap:5px;align-items:center;margin:14px 0}.place-controls button{min-width:0;width:100%;padding:0;border:1px solid #b8c7cd;border-radius:12px;background:#f6f8f8;color:#315b66;font:900 25px var(--font)}.place-controls strong{font:900 26px var(--font)}.place-tray{display:flex;align-content:flex-start;align-items:flex-start;justify-content:center;flex-wrap:wrap;gap:5px;min-height:154px;padding:8px 0}.empty-place{display:grid;place-items:center;min-height:95px;color:#5f6764;font-size:16px}.place-needs-help{outline:3px solid #39779b;outline-offset:2px}.place-summary{width:100%;max-width:460px;padding:16px;border:2px solid #d7c69f;border-radius:20px;background:#fff8e9;text-align:center}.place-summary>span{display:block;font-weight:800}.place-summary>strong{font:900 38px var(--font);color:#79501f}.place-summary p{margin:8px 0 0;font-weight:800}.second-grade-tools{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin:18px 0;width:100%}.second-grade-tools .primary-button{width:auto;min-width:145px}.second-grade-content button:focus-visible,.second-grade-section button:focus-visible{outline:3px solid #396c91;outline-offset:4px}body[data-subject=second-grade] .play-card{background:#fff7e8}#second-grade-title{scroll-margin-top:32px}@media(max-width:650px){.second-grade-section{padding:18px}.second-grade-section h2{font-size:27px}.place-value-preview{flex-basis:auto;width:150px;align-self:center}.place-builder{grid-template-columns:1fr;max-width:400px}.place-column{padding:14px}.place-column h3{font-size:22px}.place-controls{grid-template-columns:56px 56px 56px;justify-content:center}.place-tray{min-height:60px;max-width:300px;margin:auto}.place-hundreds .place-tray{min-height:108px}.empty-place{min-height:60px}.place-target>strong{font-size:48px}}