:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--bg: #f4f5f7;--surface: #ffffff;--surface-soft: #f8f9fb;--border: 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h2{font-size:46px;line-height:1.08;font-weight:700;letter-spacing:-.025em;margin-bottom:22px;text-align:left}.LandingPage .hero p{font-size:18px;line-height:1.6;max-width:640px}.LandingPage .offerings{padding:8px 48px 88px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.LandingPage .offerings h3{grid-column:1 / -1;font-size:13px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);text-align:left;padding-bottom:18px;border-bottom:1px solid var(--border);margin-bottom:8px}.LandingPage .offering{flex:none;padding:28px 24px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);text-align:left;transition:border-color .15s ease,box-shadow .15s ease}.LandingPage .offering:hover{border-color:var(--border-strong);box-shadow:var(--shadow)}.LandingPage .offering h4{font-size:17px;margin-bottom:8px}.LandingPage .offering p{font-size:14.5px;line-height:1.55}.LandingPage .offering .num{font-size:13px;font-weight:600;color:var(--accent);font-variant-numeric:tabular-nums;margin-bottom:16px}form{display:flex;flex-direction:column;gap:1rem;padding:2rem;max-width:380px;margin:3rem auto}input[type=text],input[type=password],input[type=number]{width:100%;padding:10px 12px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);font-family:var(--font);font-size:14px;box-sizing:border-box;outline:none;transition:border-color .15s ease,box-shadow .15s ease}input[type=text]:focus,input[type=password]:focus,input[type=number]:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}ul{list-style:none;padding:0;margin:0}li{background:transparent;padding:11px 12px;border-radius:var(--radius-sm);margin-bottom:2px;text-align:left;color:var(--ink);transition:background .13s ease}.AdminPage,.FactoringGame{padding:2rem}.message{font-weight:600;min-height:1.5em}.correct{color:var(--green)}.incorrect{color:#c0453b}.StudentPage{padding:40px 44px 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12px;background:var(--surface-soft);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--ink);cursor:pointer}.rc-option input{margin:4px 0 0;flex-shrink:0;accent-color:var(--accent)}.rc-option>span:first-of-type{flex:1 1 0;min-width:0}.rc-option:hover{border-color:var(--border-strong)}.rc-option:has(input:focus-visible){outline:3px solid var(--accent);outline-offset:2px}.rc-option.is-chosen{border-color:var(--accent);background:var(--accent-soft)}.rc-option.is-correct{border-color:var(--green);background:#e3f3e8}.rc-option.is-wrong{border-color:#b4424a;background:#f9e3e5}.rc-option:has(input:disabled){cursor:default}.rc-tag{font-size:12px;font-weight:600;white-space:nowrap}.rc-option.is-correct .rc-tag{color:#2c6a45}.rc-option.is-wrong .rc-tag{color:#8f2f36}.rc-explanation{margin-top:12px;font-size:14px}.rc-finish{display:flex;flex-direction:column;gap:10px}.rc button.rc-submit{width:100%;padding:14px;font-size:17px}.rc button.rc-submit:disabled{background:var(--border-strong);color:var(--text);cursor:not-allowed}.rc-result{display:flex;flex-direction:column;align-items:center;gap:8px;padding:20px;text-align:center;background:var(--surface-soft);border-radius:var(--radius)}.rc-result button{margin-top:8px}@media(min-width:1100px){.rc{max-width:1280px;padding:32px 32px 64px}.rc-reading{display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,420px);gap:48px;align-items:start}.rc-questions-col{margin-top:0}.rc-sticky-questions .rc-questions-col,.rc-sticky-passage .rc-passage-col{position:sticky;top:16px;max-height:calc(100vh - 32px);overflow-y:auto;padding:2px 6px 2px 2px}}.rc .qrp-code{margin:0 0 12px;padding:10px 12px;background:#f4f6fa;border:1px solid var(--border);border-radius:var(--radius-sm);font-family:ui-monospace,Cascadia Mono,Consolas,Menlo,monospace;font-size:15px;line-height:1.5;color:var(--ink);overflow-x:auto;white-space:pre;text-align:left}.rc .qrp-inline{font-family:ui-monospace,Cascadia Mono,Consolas,Menlo,monospace;font-size:.95em;color:var(--ink)}.rc-options .qrp-inline{padding:1px 6px;background:#f4f6fa;border-radius:4px}.qrp-intro{max-width:68ch;margin-bottom:16px;font-size:16px;line-height:1.6;color:var(--ink)}.qrp-primer{display:flex;flex-direction:column;gap:12px;max-width:68ch;margin:0 0 16px}.qrp-primer-row{padding:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.qrp-primer dt .qrp-code{margin-bottom:8px}.qrp-primer dd{margin:0;font-size:15px;line-height:1.5;color:var(--ink)}.ttp-steps{margin:0 0 16px;padding-left:1.2em;max-width:68ch}.ttp-steps li{padding:0;margin:0 0 6px;color:var(--ink);line-height:1.5;background:none}.rc h4.rc-question{font-size:17px}.ttp-text{margin-bottom:10px;font-family:var(--rc-serif);font-size:17px;line-height:1.6;color:var(--rc-passage-ink)}.ttp-look{margin-bottom:12px}.ttp-label{display:block;margin-bottom:6px;font-size:14px;font-weight:600;color:var(--ink)}.rc .ttp-code{min-height:140px;font-family:ui-monospace,Cascadia Mono,Consolas,Menlo,monospace;font-size:15px;line-height:1.5;white-space:pre;tab-size:4}.ttp-answer{margin-top:14px;padding-top:12px;border-top:1px solid var(--border)}.ttp-checks{margin:0;padding-left:1.2em}.ttp-checks li{padding:0;margin:0 0 4px;font-size:14px;color:var(--ink);background:none}