.prototype-page .g-main{max-width:1240px;padding:0 20px}
.prototype-page .g-layout{grid-template-columns:220px minmax(0,1fr);gap:24px}
.prototype-heading{margin:0 0 20px;font-size:1.3rem;scroll-margin-top:150px}
.prototype-list{display:flex;flex-direction:column;gap:18px;min-width:0}
.prototype-list .g-card{padding:22px 26px;border-radius:15px;scroll-margin-top:150px;min-width:0}
.prototype-list .g-card-top{gap:10px}
.prototype-list .g-card-top h2{font-size:1rem;line-height:1.45}
.prototype-list .g-analog{padding:8px 12px;font-size:.92rem}
.prototype-list .g-expression{min-height:85px;padding:16px 4px;font-size:1.7rem}
.prototype-list .g-help{gap:8px;margin-top:10px}
.prototype-list .g-help button{padding:6px 10px;font-size:.9rem}
.prototype-list .prototype-share{margin-left:auto}
.prototype-list .g-note{font-size:.82rem;margin:8px 0 0}
.prototype-list .g-feedback:empty{display:none}
.prototype-list [data-field=diagram]{min-width:0}
.prototype-list [data-field=answerForm]{margin-top:16px}
.prototype-list .g-answer-row input{min-width:0}
.prototype-work{margin:16px 0;color:var(--lavender-dark)}
.prototype-work summary{cursor:pointer;font-weight:600}
.prototype-page .g-work{min-width:0}
.prototype-page .g-sidebar{position:sticky;top:100px}
@media(max-width:800px){.prototype-page .g-layout{grid-template-columns:1fr}.prototype-page .g-sidebar{position:static}.prototype-page .g-sidebar nav{display:flex;flex-direction:row;flex-wrap:wrap;gap:4px}.prototype-page .g-sidebar button{padding:8px 10px;font-size:.86rem}.prototype-page .g-main{padding:0 12px}.prototype-list .g-card{padding:18px 16px}.prototype-heading{font-size:1.15rem}.prototype-list .g-card-top{align-items:start}.prototype-list .g-expression{font-size:1.35rem}}
@media print{.prototype-page .g-sidebar,.prototype-page .g-help,.prototype-page .g-analog,.prototype-page [data-field=answerForm],.prototype-page .g-note{display:none!important}.prototype-page .g-layout{display:block}.prototype-list .g-card{break-inside:avoid;box-shadow:none}}

/* Compact arithmetic, without reducing diagrams or mathematical notation. */
.prototype-list{gap:12px}.prototype-list .g-card{padding:16px 20px}
.prototype-list .g-card-top{flex-wrap:wrap;margin-bottom:10px}.prototype-list .g-card-top h2{margin-right:auto;margin-bottom:0}
.prototype-list .g-expression{min-height:0;padding:7px 4px;margin:7px 0;font-size:1.55rem}
.prototype-list [data-field=answerForm]{margin-top:10px}.prototype-list .g-answer-row{align-items:center}
.prototype-list .g-answer-row input{max-width:300px}.prototype-list .g-note{margin-top:5px}
.prototype-list .g-help{margin-top:7px}.prototype-list .prototype-collect{white-space:nowrap}
@media print{.prototype-collect{display:none!important}}

.prototype-list .g-prompt{margin:8px 0 0}.prototype-list .g-card-top{margin-bottom:0}
.prototype-list [data-field=answerForm]{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:8px}
.prototype-list [data-field=answerForm]>label{margin:0;font-weight:500}.prototype-list .g-answer-row{flex:1;max-width:440px}
.prototype-list .g-answer-row input{padding:8px 12px}.prototype-list .g-answer-row button{padding:8px 14px}
.prototype-list .g-help{margin-top:6px}.prototype-list .g-note{font-size:.78rem}.prototype-list .g-expression{margin:4px 0;padding:5px}

/* Part 2: final answer first, written reasoning in one compact section. */
.prototype-page.part2-page .p2-prompt{margin:16px 0}
.prototype-page.part2-page .prototype-work{margin:12px 0;padding:10px 12px;border:1px solid #e2d9ec;border-radius:10px;background:#fcfaff}
.prototype-page.part2-page .prototype-work .p2-work-label{margin:12px 0}
.prototype-page.part2-page .prototype-work textarea{min-height:120px}
.prototype-page.part2-page [data-field="answerHelp"]{flex-basis:100%;margin:0;font-size:.82rem}
.prototype-page.part2-page [data-field="feedback"]{font-size:1rem;line-height:1.5}
.prototype-page.part2-page [data-field="answerForm"][hidden]{display:none}
@media(max-width:560px){.prototype-page.part2-page .g-answer-row{flex-basis:100%;flex-wrap:wrap}.prototype-page.part2-page .g-answer-row input{flex:1;max-width:none;min-width:120px}.prototype-page.part2-page .g-answer-row button{flex-shrink:0}}