:root{color-scheme:light;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#24374b;background:#f4f7f6;font-size:20px;line-height:1.6}
*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a,input{touch-action:manipulation}
.estimate-page{width:min(100%,800px);margin:0 auto;padding:24px 16px 60px}h1{font-size:clamp(26px,5vw,36px);line-height:1.25}h2{font-size:30px;margin:10px 0}a{color:#116c67}button{padding:11px 17px;border:2px solid #16746d;border-radius:12px;background:#fff;color:#155e59;cursor:pointer;min-height:48px}button:disabled{opacity:.5;cursor:default}button:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid #cf901f;outline-offset:3px}
#practice,#estimate-check{background:#16746d;color:#fff}.estimate-card{margin-top:24px;padding:clamp(16px,4vw,30px);background:white;border:1px solid #cbdcd6;border-radius:18px}#estimate-prompt{display:block;font-size:23px;margin-top:20px}.estimate-answer-row,.estimate-actions{display:flex;gap:12px;flex-wrap:wrap;margin:16px 0}input{width:160px;max-width:100%;padding:11px;border:2px solid #89a79e;border-radius:10px}#estimate-trail{border-left:4px solid #79a499;padding-left:12px;overflow-wrap:anywhere}#estimate-trail:empty{display:none}#estimate-trail p{margin:7px 0}#estimate-trail .latest{padding:8px 10px;background:#d9f1df;color:#164b2b;border-radius:7px;font-weight:700}#estimate-feedback{padding:12px;border-radius:10px;background:#fff4d8}#estimate-feedback.incorrect{background:#fff0eb;color:#793728}#estimate-feedback.correct{background:#d9f1df;color:#164b2b}.estimate-muted{font-size:16px;color:#526b64}[hidden]{display:none!important}
@media(max-width:400px){.estimate-page{padding:14px 10px}#estimate-prompt{font-size:21px}.estimate-card{padding:15px}.estimate-answer-row button{flex:1}}
.estimate-card .lm-scaffold{margin-top:16px;padding:12px;border:2px solid #c9aa57;border-radius:10px;background:#fffbef}.estimate-card .lm-scaffold h3{font-size:21px;margin:0 0 8px}.estimate-card .lm-scaffold p{margin:8px 0}.estimate-card .lm-help-number{padding:1px 5px;border-radius:4px;background:#ffe08a;color:#24374b;font-weight:700}.estimate-card .lm-scaffold-table{max-width:100%;overflow:auto}.estimate-card .lm-scaffold table{width:100%;border-collapse:collapse}.estimate-card .lm-scaffold th,.estimate-card .lm-scaffold td{padding:6px;border:1px solid #bdc9c5;text-align:left}.estimate-card .lm-scaffold-selected{background:#d9f1df;color:#164b2b;font-weight:700}.estimate-card .lm-digit-too-much{background:#fff0eb}.estimate-card .lm-digit-note{display:block;font-size:16px}.estimate-card .lm-scaffold-result{font-weight:700}