:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f7f7f7;--panel:#fff;--panel-alt:#fafafa;--ink:#202124;--muted:#5f6368;--line:#cfd3d7;--control-line:#81878d;--accent:#165ea8;--page-width:86rem;color:var(--ink);background:var(--bg);font:1rem/1.55 system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*,:before,:after{box-sizing:border-box}body{margin:0}[hidden]{display:none!important}a{color:var(--accent);text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}h1,h2,p{margin:0}h1,h2{text-wrap:balance;line-height:1.2}h1{letter-spacing:-.025em;font-size:2.25rem}h2{font-size:1.5rem}p{text-wrap:pretty;max-inline-size:72ch}.content-width,.site-header-inner{inline-size:min(100% - 2rem, var(--page-width));margin-inline:auto}.site-header{background:var(--panel);border-block-end:1px solid var(--line)}.site-header-inner{justify-content:space-between;align-items:center;gap:1rem;min-block-size:3.5rem;display:flex}.wordmark{color:var(--ink);font-size:1.1rem;font-weight:700;text-decoration:none}.site-nav{flex-wrap:wrap;justify-content:flex-end;gap:.2rem;display:flex}.site-nav a{min-block-size:2.5rem;color:var(--muted);align-items:center;padding-inline:.6rem;font-size:.9rem;display:inline-flex}.site-nav [aria-current]{color:var(--accent);font-weight:600}.skip-link{z-index:20;background:var(--panel);padding:.65rem .85rem;position:fixed;inset-block-start:.5rem;inset-inline-start:.5rem;transform:translateY(-160%)}.skip-link:focus{transform:translateY(0)}.intro{padding-block:3rem 2rem}.intro p{margin-block-start:.85rem}.muted,.hint{color:var(--muted)}.section-nav{flex-wrap:wrap;gap:.25rem 1.5rem;margin-block-start:1.25rem;display:flex}.section-nav a{padding-block:.5rem}.operation{border-block-start:1px solid var(--line);padding-block:2rem 3rem;scroll-margin-block-start:1rem}.section-heading{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:.75rem 2rem;margin-block-end:1.5rem;display:flex}.section-heading p{color:var(--muted);margin-block-start:.5rem}.workspace{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:2rem;display:grid}.workspace>*{min-inline-size:0}form{flex-direction:column;align-items:stretch;gap:.6rem;display:flex}label,legend{font-weight:600}input,textarea,button{font:inherit}input:not([type=radio]),textarea{border:1px solid var(--control-line);inline-size:100%;color:var(--ink);background:var(--panel);border-radius:.2rem;padding:.6rem .7rem}input[type=radio]{accent-color:var(--accent);flex-shrink:0;block-size:1.15rem;inline-size:1.15rem}:is(input:user-invalid,textarea:user-invalid){border-color:#a52422}textarea{resize:vertical;min-block-size:10rem}textarea::placeholder{color:var(--muted)}textarea.prompt{min-block-size:6rem}textarea.xml-input,[data-output]{tab-size:2;min-block-size:24rem;font:.875rem/1.6 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}[data-output]{background:var(--panel-alt)}.field-pair{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.field-pair label{margin-block-end:.4rem;display:block}fieldset{border:0;min-inline-size:0;margin:.6rem 0;padding:0}legend{margin-block-end:.35rem;padding:0}.hint{margin-block:.25rem .6rem;font-size:.9rem}.choice-row{align-items:center;gap:1rem;margin-block:.6rem;display:flex}.answer-radio{white-space:nowrap;align-items:center;gap:.4rem;min-block-size:2.75rem;display:flex}.targets label{align-items:center;gap:.4rem;min-block-size:2.75rem;margin-inline-end:1.25rem;display:inline-flex}button{border:1px solid var(--control-line);min-block-size:2.75rem;color:var(--ink);background:var(--panel);cursor:pointer;border-radius:.2rem;padding:.55rem .85rem;font-weight:600}button:hover:not(:disabled){border-color:var(--accent);background:#edf2f8}button:active:not(:disabled){background:#dce7f2}button:disabled{color:var(--muted);border-color:var(--line);cursor:default;background:#eee}button.primary{color:#fff;background:var(--accent);border-color:var(--accent);align-self:flex-start;margin-block-start:.4rem}button.primary:hover:not(:disabled){background:#114b87}button.primary:disabled{color:var(--muted);border-color:var(--line);background:#eee}.actions{flex-wrap:wrap;gap:.6rem;margin-block-start:.8rem;display:flex}.sample-actions{margin-block:0 .5rem}.status{min-block-size:1.55em;color:var(--muted);margin-block:.65rem}[data-state=success] .status{color:#23643a}[data-state=warning] .status{color:#855000}[data-state=error] .status{color:#a52422}.diagnostics{overflow-wrap:anywhere;margin:0;padding-inline-start:1.25rem}.diagnostics:empty{display:none}.diagnostics li{padding-block-end:.8rem}.diagnostics strong{font-size:.9rem}.diagnostics p{margin-block-start:.2rem}.diagnostics code{font-size:.85rem}details{margin-block-start:1rem}summary{cursor:pointer;padding-block:.4rem}pre{white-space:pre-wrap;overflow-wrap:anywhere;max-inline-size:100%;font-size:.85rem}.scope{padding-block:1rem 2rem}.scope h2{margin-block-end:.65rem;font-size:1.1rem}.scope p{color:var(--muted)}footer{border-block-start:1px solid var(--line);padding-block:1rem 2rem}qti-assessment-item-player{background:var(--panel);margin-block-start:1rem;display:block}.sr-only{clip-path:inset(50%);white-space:nowrap;border:0;block-size:1px;inline-size:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (width<=52rem){.workspace{grid-template-columns:1fr;gap:1.5rem}.site-header-inner{align-items:flex-start;padding-block:.65rem}.intro{padding-block-start:2rem}h1{font-size:2rem}textarea.xml-input,[data-output]{min-block-size:18rem}}@media (width<=30rem){.site-header-inner{display:block}.site-nav{justify-content:flex-start;margin-block-start:.35rem}.site-nav a{margin-inline-end:1rem;padding-inline:0}.field-pair{grid-template-columns:1fr}.choice-row{gap:.5rem}}@media (forced-colors:active){button,input:not([type=radio]),textarea{border-color:buttontext}button:disabled{color:graytext;border-color:graytext}:focus-visible{outline-color:highlight}}