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UI,sans-serif;letter-spacing:.04em;cursor:pointer;touch-action:manipulation}.checkpoint-primary:hover{background:#ffdc87}.checkpoint-primary:disabled{opacity:.45;cursor:default}.checkpoint-primary:focus-visible,.checkpoint-input:focus-visible{outline:3px solid #376493;outline-offset:3px}.checkpoint-input{width:100%;grid-column:1/-1;padding:14px;border:2px solid #a5b9ce;border-radius:10px;background:#fff;color:#193858;font-size:23px;-webkit-user-select:text;user-select:text}.checkpoint-result{margin:0 0 12px;color:#9a6824;font-size:12px;font-weight:800;letter-spacing:.1em}.checkpoint-result.is-correct{color:#27836b}.checkpoint-review-question{margin:0 0 18px;color:#50657b;font-size:16px;line-height:1.5}.checkpoint-solution{padding:17px 19px;background:#e7f2ed;border:1px solid #bbdacc;border-radius:13px}.checkpoint-solution .checkpoint-eyebrow{color:#417666;margin-bottom:6px}.checkpoint-solution strong{font-size:23px;color:#1d6452}.checkpoint-chosen{font-size:14px;color:#856c50}.checkpoint-explanation h2{font-size:15px;margin-top:22px}.checkpoint-explanation p{font-size:16px;line-height:1.65;overflow-wrap:anywhere}.checkpoint-continue{display:block;margin:24px 0 0 auto}.checkpoint[data-urgent=true] .checkpoint-clock strong{color:#ffad8d}.checkpoint[data-urgent=true] .checkpoint-meter::-webkit-progress-value{background:#c56c47}.checkpoint .matrix-equation{display:block;max-width:100%;overflow-x:auto;white-space:nowrap;font-family:"Cambria Math",serif}body:has(.checkpoint[open]) .portrait-runner-controls,body:has(.checkpoint[open]) .portrait-pause{visibility:hidden}@media(max-width:600px){.checkpoint{width:calc(100vw - 20px);max-height:calc(100dvh - 24px);border-radius:19px}.checkpoint-header{padding:17px;gap:10px}.checkpoint h1{font-size:19px}.checkpoint-identity{gap:10px}.checkpoint-crest{width:36px;height:43px;font-size:29px}.checkpoint-clock strong{font-size:25px}.checkpoint-intro{padding:14px 18px 0;align-items:flex-start;font-size:11px;line-height:1.5}.checkpoint-content{padding:18px}.checkpoint-question{font-size:20px;margin-bottom:16px}.checkpoint-choices{grid-template-columns:1fr;gap:9px}.checkpoint-option{min-height:55px;padding:10px 12px}.checkpoint-footer{flex-direction:column;gap:12px;margin-top:18px;padding-top:15px}.checkpoint-note{max-width:none;text-align:center}.checkpoint-primary{width:100%}}.checkpoint-time-help{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:11px 13px;margin:0 0 18px;border-radius:11px;background:#edf3f8}.checkpoint-time-help span{flex:1;min-width:160px;color:#547087;font-size:12px;line-height:1.5}.checkpoint-extra,.checkpoint-review{min-height:40px;padding:9px 13px;border:1px solid #b7c9d9;border-radius:9px;background:#fff;color:#234c75;font:800 12px Segoe UI,sans-serif;cursor:pointer;touch-action:manipulation}.checkpoint-extra{background:#fae3a4;border-color:#d5b55f}.checkpoint-keypad{grid-column:1 / -1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;width:min(340px,100%);margin:0 auto}.checkpoint-key{min-height:46px;border:1px solid #c4d3df;border-radius:10px;background:#fff;color:#234c75;font:750 22px Segoe UI,sans-serif;cursor:pointer;touch-action:manipulation;box-shadow:0 2px #d6e1eb}.checkpoint-key:hover,.checkpoint-key:active{background:#e3edf6}.checkpoint-key:focus-visible,.checkpoint-extra:focus-visible,.checkpoint-review:focus-visible{outline:3px solid #cba33f;outline-offset:2px}.checkpoint:has(.checkpoint-keypad) .checkpoint-question{font-size:21px;margin-bottom:13px}.checkpoint:has(.checkpoint-keypad) .checkpoint-input{text-align:center;padding:9px}.checkpoint:has(.checkpoint-keypad) .checkpoint-footer{margin-top:16px;padding-top:13px}@media(max-width:600px){.checkpoint:has(.checkpoint-keypad) .checkpoint-header{padding:12px 17px}.checkpoint:has(.checkpoint-keypad) .checkpoint-intro{padding-top:10px}.checkpoint:has(.checkpoint-keypad) .checkpoint-content{padding-top:12px}.checkpoint:has(.checkpoint-keypad) .checkpoint-time-help{margin-bottom:12px}.checkpoint:has(.checkpoint-keypad) .checkpoint-note{display:none}}