:root{--paper:#f3f6fb;--ink:#192d49;--muted:#526681;--blue:#2452be;--pale:#e4ecfc;--line:#cbd6e7;--code:#182941;--success:#176342;--white:#fff;font-family:'Avenir Next',Avenir,'Segoe UI',sans-serif;color:var(--ink);background:var(--paper);font-size:15px;line-height:1.55}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,.import{cursor:pointer;border:1px solid var(--line);background:white;color:var(--ink);border-radius:6px;padding:8px 13px;font-weight:600}button:hover,.import:hover{background:var(--pale)}button:disabled{opacity:.5;cursor:default}button.primary{background:var(--blue);color:white;border-color:var(--blue)}a{color:var(--blue)}header{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line);padding:18px 4vw;background:white}.home{font-weight:700;color:var(--ink);text-decoration:none}.brand{border-left:1px solid var(--line);padding-left:16px;margin-right:auto;color:var(--muted)}main{max-width:1680px;margin:auto;padding:0 4vw}h1{font-size:clamp(38px,4.5vw,65px);line-height:1.07;letter-spacing:-2px;font-weight:650;margin:0 0 22px}h2{line-height:1.2;margin:0 0 12px;font-size:26px}h3{font-size:16px;margin:0 0 8px}p{margin:0 0 16px;max-width:70ch}.intro{display:grid;grid-template-columns:1.2fr 1fr;gap:10%;padding:58px 0 42px;align-items:center}.intro>div>p{max-width:46ch;font-size:17px;color:var(--muted)}.today{border-left:4px solid var(--blue);padding:18px 26px;background:#e8eef9}.today>span{display:block;color:var(--muted);margin-bottom:12px;font-size:13px}.today h2{font-size:25px}.today p{font-size:15px!important}.studio{display:grid;grid-template-columns:230px minmax(0,1fr);border:1px solid var(--line);background:white;border-radius:10px;overflow:hidden}.curriculum{padding:24px 16px;background:#edf2fa;border-right:1px solid var(--line)}.curriculum h2{font-size:18px}.small{font-size:12px;color:var(--muted);line-height:1.5}.curriculum nav{margin:22px -8px}.lesson{display:block;text-align:left;width:100%;padding:11px 12px;border:0;border-radius:5px;background:transparent;margin:3px 0;font-size:13px;font-weight:550}.lesson small{display:block;color:var(--muted);font-weight:400;margin-top:3px}.lesson[aria-current=true]{background:var(--blue);color:white}.lesson[aria-current=true] small{color:#e5edff}.group-label{font-size:13px;font-weight:700;padding:18px 12px 5px}.curriculum label{font-size:13px;font-weight:600}.curriculum textarea{width:100%;margin:8px 0;border:1px solid var(--line);border-radius:4px;padding:9px;font-size:13px;resize:vertical}.workbench{min-width:0}.exercise-heading{display:flex;justify-content:space-between;gap:25px;padding:26px 26px 18px}.exercise-heading p{font-size:14px;color:var(--muted);margin:0}.exercise-heading #stage{margin-bottom:8px}.exercise-heading h2{margin-bottom:8px}.timer{text-align:right;flex-shrink:0}.timer output{display:block;font-variant-numeric:tabular-nums;font-size:23px;margin-bottom:5px}.timer button{font-size:12px}.session-bar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;background:#f7f9fd;padding:12px 26px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:12px}.session-bar select{padding:6px;border:1px solid var(--line);background:white;border-radius:4px}.session-bar button{font-size:12px}.panes{display:grid;grid-template-columns:minmax(250px,.8fr) minmax(0,1.2fr)}.brief-pane{padding:22px;border-right:1px solid var(--line);max-height:850px;overflow:auto;font-size:13px}.brief-pane h3{margin-bottom:18px}.brief-pane pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#edf2fa;padding:10px;font-family:Menlo,monospace;font-size:11px}.brief-pane code{font-family:Menlo,monospace;font-size:11px;color:#234b83}#brief h1{font-size:22px;letter-spacing:0;line-height:1.3;margin:0 0 15px}#brief h2{font-size:17px;margin-top:22px}#brief h3{font-size:15px;margin-top:18px}#brief p{white-space:pre-wrap}#brief ul,#brief ol{padding-left:20px}details{border-top:1px solid var(--line);padding:14px 0;margin-top:12px}summary{cursor:pointer;font-weight:600}details p,details ol{margin-top:12px}.code-pane{min-width:0;background:var(--code);color:#eef3fc;padding-bottom:14px}.file-bar{padding:12px 16px;display:flex;align-items:center;gap:8px;font-size:11px}.file-bar select{max-width:75%;background:#263b58;color:white;border:1px solid #536985;border-radius:4px;padding:6px;font-size:12px}.file-bar>span{margin-left:auto;color:#c1d0e7;font-size:10px}#editor{display:block;width:100%;height:400px;background:#182941;color:#f0f4ff;padding:16px;border:0;border-top:1px solid #3c506e;border-bottom:1px solid #3c506e;resize:vertical;font:13px/1.7 Menlo,Consolas,monospace;tab-size:4;caret-color:#ffd583;white-space:pre;overflow:auto}#editor[readonly]{color:#c0cfe3}#editor-help{color:#b5c8e3;padding:8px 16px;margin:0;font-size:10px}.actions{display:flex;gap:7px;flex-wrap:wrap;padding:8px 16px}.actions button{font-size:12px}.actions .primary{background:#9bbcff;color:#14274a;border-color:#9bbcff}.output-heading{padding:16px 16px 4px;display:flex;gap:12px;align-items:center}.output-heading h3{margin:0;font-size:13px}.output-heading span{font-size:10px;color:#b5c8e3}#output{font:11px/1.6 Menlo,monospace;white-space:pre-wrap;overflow-wrap:anywhere;max-height:265px;min-height:120px;overflow:auto;margin:8px 16px;color:#e1eaf8}.reflection{padding:22px 26px;border-top:1px solid var(--line)}.reflection label{font-size:13px;color:var(--muted);display:block;margin-bottom:9px}.reflection textarea{width:100%;border:1px solid var(--line);border-radius:5px;padding:10px;resize:vertical;font-size:13px}.reflection-footer{display:flex;gap:15px;justify-content:space-between;align-items:center;margin-top:12px;font-size:12px}.reflection-footer button{font-size:12px}.evidence{display:grid;grid-template-columns:1fr 1fr;gap:10%;padding:40px 0}.evidence h2{font-size:25px}.evidence p{font-size:14px;color:var(--muted)}#history{padding-left:18px;font-size:12px;color:var(--muted)}#history li{margin-bottom:9px}footer{border-top:1px solid var(--line);padding:22px 0 40px;color:var(--muted);font-size:12px}dialog{max-width:700px;width:calc(100% - 30px);max-height:85vh;overflow:auto;border:1px solid var(--line);border-radius:12px;padding:35px;color:var(--ink);font-size:14px}dialog::backdrop{background:#14274aaa}dialog h2{margin-top:30px}dialog h3{margin-top:24px}.close{float:right}#notice:not(:empty){padding:12px 16px;margin-bottom:15px;border:1px solid var(--line);background:#e9f1ff;font-size:13px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:focus-visible{outline:3px solid #e5ac37;outline-offset:3px}#editor:focus-visible{outline-offset:-3px} @media(min-width:1500px){.panes{grid-template-columns:1fr 1.35fr}#editor{height:455px}}@media(max-width:1100px){main{padding:0 20px}.studio{grid-template-columns:190px minmax(0,1fr)}.panes{grid-template-columns:1fr}.brief-pane{max-height:340px;border-right:0;border-bottom:1px solid var(--line)}.intro{gap:5%}.exercise-heading{padding:20px}.session-bar{padding:12px 20px}}@media(max-width:700px){header{flex-wrap:wrap;padding:14px 18px;gap:8px}header button,.import{font-size:11px;padding:6px 8px}.brand{font-size:13px}.intro{grid-template-columns:1fr;padding:35px 0 25px;gap:22px}h1{font-size:42px}.intro>div>p{font-size:15px}.today{padding:15px 20px}.studio{grid-template-columns:1fr}.curriculum{border-right:0;border-bottom:1px solid var(--line);padding:16px}.curriculum nav{max-height:200px;overflow:auto;margin:10px -5px}.curriculum>label,.curriculum>textarea,.curriculum>p:last-child{display:none}.curriculum h2{margin-bottom:5px}.exercise-heading{gap:10px}.exercise-heading h2{font-size:22px}.timer output{font-size:18px}.panes{grid-template-columns:1fr}.reflection-footer{align-items:flex-start;flex-direction:column}.evidence{grid-template-columns:1fr;gap:20px}#editor{font-size:12px;height:340px}main{padding:0 12px}.file-bar{padding:10px}.file-bar select{max-width:70%}.session-bar{gap:8px}.session-bar #session-status{width:100%}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
@media(min-width:701px){.curriculum nav{max-height:740px;overflow:auto;scrollbar-width:thin}.curriculum{align-self:stretch}}

.path-link{font-size:13px;font-weight:650;text-decoration:none;padding:8px 10px;background:#e4ecfc;border-radius:5px}@media(max-width:700px){.path-link{font-size:11px;padding:6px 8px}}