:root{--paper:#f7f4e9;--ink:#1b3029;--green:#315e49;--muted:#57695d;--line:#d8dccd;--purple:#725a9a}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 system-ui,sans-serif}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button,.button{display:inline-block;border:1px solid #a9b7a7;border-radius:10px;background:#fffef8;color:var(--ink);padding:11px 18px;min-height:46px;cursor:pointer;text-decoration:none}button:hover,.button:hover{background:#e9edde}.primary{background:var(--green);color:white}.primary:hover{background:#204634}.danger{color:#8b3526}button:disabled{opacity:.5;cursor:default}a{color:var(--green)}:focus-visible{outline:3px solid var(--purple);outline-offset:3px}[hidden]{display:none!important}main,header.top,footer{width:min(1260px,calc(100% - 40px));margin:auto}.top{display:flex;justify-content:space-between;gap:20px;align-items:center;border-bottom:1px solid var(--line);padding:22px 0}.brand{font-weight:800;letter-spacing:.12em;font-size:.82rem}.tag{font:600 .7rem ui-monospace,monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--purple)}h1,h2,h3{line-height:1.12;letter-spacing:-.035em}h1{font-size:clamp(2.5rem,5vw,4.5rem);margin:16px 0}h1 em{font-family:Georgia,serif;font-weight:400;color:var(--green)}h2{font-size:2rem;margin-top:0}h3{font-size:1.25rem}.intro{padding:32px 0}.muted,.small{color:var(--muted);font-size:.88rem}.banner{background:#efe5c8;padding:10px 20px;text-align:center;font-size:.82rem}.layout{display:grid;grid-template-columns:215px minmax(0,1fr);gap:28px;align-items:start}.layout>*{min-width:0}.sidebar{position:sticky;top:20px}.sidebar nav{display:grid;gap:8px}.sidebar nav button{text-align:left;font-size:.84rem;display:flex;gap:10px;align-items:center}.sidebar button[aria-current=step]{border:2px solid var(--green);background:#e4ebdc}.sidebar .primary{width:100%;margin-top:18px}.card{background:#fffef9;border:1px solid var(--line);border-radius:20px;padding:28px;margin-bottom:24px}.card-head{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:25px}.card-head p{margin-bottom:0}.gate{max-width:550px;margin:25px auto 65px}.gate input{font-size:2rem;text-transform:uppercase;letter-spacing:.2em}.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}label.field{display:flex;flex-direction:column;gap:8px;font-size:.9rem;font-weight:600}input:not([type=radio]):not([type=checkbox]):not([type=range]),select,textarea{width:100%;min-height:46px;padding:10px 12px;border:1px solid #aab6a6;background:white;border-radius:8px;color:var(--ink)}textarea{resize:vertical;min-height:110px}input[type=range]{width:100%;accent-color:var(--green)}input[type=radio],input[type=checkbox]{width:20px;height:20px;accent-color:var(--green);flex:0 0 20px}table{width:100%;border-collapse:collapse;table-layout:fixed;margin:20px 0;font-size:.9rem}th,td{text-align:left;padding:11px;border:1px solid var(--line);overflow-wrap:anywhere}th{background:#edf0e3}caption{text-align:left;color:var(--muted);font-size:.85rem}.graph{border:1px solid var(--line);background:white;border-radius:12px;margin:20px 0;overflow:hidden}.graph svg{display:block;width:100%;height:auto;touch-action:none}.graph:focus-visible{outline:3px solid var(--purple)}.graph-note{padding:0 15px;font-size:.85rem}.bar-row{display:grid;grid-template-columns:70px 1fr 85px;gap:15px;align-items:center;margin:12px 0}.questions{margin-top:35px;border-top:2px solid var(--line)}fieldset{border:0;padding:0;margin:30px 0}legend{font-weight:650;font-size:1.1rem;margin-bottom:14px}.option{display:flex;gap:13px;align-items:flex-start;border:1px solid var(--line);border-radius:12px;padding:15px;margin:10px 0;cursor:pointer}.option:has(input:checked){background:#e8eddf;border-color:var(--green)}.option b{font:700 1rem ui-monospace,monospace;padding-top:2px}.option span{flex:1}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.actions .next{margin-left:auto}.answer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.answer-cell{background:#eef1e7;border:1px solid var(--line);border-radius:12px;padding:15px;display:flex;justify-content:space-between;align-items:center}.answer-cell strong{font:700 2rem ui-monospace,monospace}.answer-cell.missing{background:#faf0db}.answer-cell.missing strong{font-size:.8rem}.answer-cell button{padding:4px 8px;min-height:32px;font-size:.7rem}.status{min-height:28px}.code{font:700 1.7rem ui-monospace,monospace;letter-spacing:.16em;text-transform:uppercase}.teacher-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:24px}.teacher-grid>*{min-width:0}.code-row{border-top:1px solid var(--line);padding:15px 0}.code-controls{display:flex;gap:8px;align-items:center}.code-controls input{max-width:130px}.step{font:700 .8rem ui-monospace,monospace;text-transform:uppercase;letter-spacing:.08em;margin:26px 0 12px;color:var(--green)}.selected-row{background:#eee9f4}.point-select[aria-pressed=true]{background:var(--green);color:white}.transfer{border-left:4px solid var(--green);padding:15px 20px;background:#edf1e5}.skip{position:absolute;top:-100px}.skip:focus{top:10px;left:10px;background:white;z-index:10}footer{padding:30px 0}.export-key{max-height:480px;overflow:auto}.key-row{border-top:1px solid var(--line);padding:10px 0}.key-row strong{color:var(--purple)}@media(max-width:850px){.layout,.teacher-grid{grid-template-columns:1fr}.sidebar{position:static}.sidebar nav{display:flex;overflow:auto;max-width:100%;padding:4px}.sidebar nav button{min-width:160px}.sidebar .primary{width:auto}.answer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:480px){main,header.top,footer{width:calc(100% - 24px)}.card{padding:18px}.fields{grid-template-columns:1fr}.answer-grid{grid-template-columns:1fr 1fr}.bar-row{grid-template-columns:45px 1fr 65px;gap:8px}.top{font-size:.8rem}th,td{padding:7px}.option{padding:12px;gap:8px}.actions .next{margin-left:0}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}@media print{.top,.intro,.sidebar,.actions,.banner,footer,#gate,#workspace{display:none!important}#summary{display:block!important}.answer-grid{grid-template-columns:repeat(4,1fr)}.answer-cell button,.transfer{display:none}.card{border:0}}

.answer-cell{min-width:0;flex-wrap:wrap;gap:8px}.answer-cell.missing strong{width:100%;text-align:right;overflow-wrap:anywhere}
/* Standalone assessment additions. */
.intro{max-width:850px}.intro h1{font-size:clamp(2.3rem,5vw,4rem)}
.answer-list{list-style:none;padding:0;max-width:460px}.answer-list li{display:flex;align-items:center;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--line);gap:16px}.answer-line{font:600 1.3rem ui-monospace,monospace}.answer-list button{padding:6px 12px;font-size:.85rem}
.calculator-launch{position:fixed;right:22px;bottom:22px;background:var(--purple);color:#fff;box-shadow:0 4px 16px #1b30292b;z-index:20}.calculator-launch:hover{background:#584277}
#calculator{position:fixed;inset:auto 22px 82px auto;margin:0;width:310px;max-width:calc(100vw - 16px);max-height:calc(100dvh - 16px);overflow:auto;border:1px solid #a9b7a7;border-radius:16px;padding:16px;background:#fffef9;color:var(--ink);box-shadow:0 12px 55px #1b30294d;z-index:30}
#calculator-handle{display:flex;justify-content:space-between;align-items:center;cursor:move;touch-action:none}#calculator-title{font-size:1.2rem;margin:0}#calculator-close{font-size:1.4rem;padding:4px 12px}#calculator .small{font-size:.75rem;margin:6px 0 12px}#calculator-result{display:block;min-height:42px;padding:8px 0;overflow-wrap:anywhere}#calculator-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}#calculator-keys button{padding:7px;min-height:42px}#calculator-keys [data-calc="="]{background:var(--green);color:white}
footer{padding-bottom:100px}#workspace fieldset:focus{outline:3px solid var(--purple);outline-offset:6px}
@media(max-width:480px){.top{align-items:flex-start;flex-direction:column;gap:6px}.bar-row{grid-template-columns:55px 1fr 85px}th input,td input{padding:8px!important}.calculator-launch{right:12px;bottom:12px}.answer-line{font-size:1.1rem}}
@media print{#calculator,#calculator-open,.skip,.answer-list button{display:none!important}#fallback:not([hidden]){display:block}#summary[hidden]{display:none!important}.answer-list li{padding:4px 0}.answer-line{font-size:12pt}main{width:100%}}