@font-face{font-family:Atkinson;src:url('assets/fonts/AtkinsonNext-VF.woff2') format('woff2');font-weight:200 800;font-display:swap}@font-face{font-family:Schibsted;src:url('assets/fonts/Schibsted-VF.woff2') format('woff2');font-weight:400 900;font-display:swap}@font-face{font-family:Lenia;src:url('assets/fonts/LeniaMono-Regular.woff') format('woff');font-display:swap}@font-face{font-family:Fraunces;src:url('assets/fonts/Fraunces-VF.woff2') format('woff2');font-weight:100 900;font-display:swap}
:root{--paper:#f8f5f2;--white:#fffdf9;--ink:#221c15;--muted:#6c635a;--rust:#9a3412;--line:#dbd4cc;--green:#315e4b;--dark:#202824;--mono:Lenia,monospace;--body:Atkinson,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.5}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}a{color:var(--rust);text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #9a3412;outline-offset:4px}button{color:inherit}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0)}.skip{position:fixed;top:-90px;left:20px;z-index:20;padding:14px;background:var(--white)}.skip:focus{top:12px}.masthead{height:105px;max-width:1600px;margin:auto;padding:0 4.4%;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--ink)}.brand-mark{font-family:Fraunces,serif;font-size:42px;letter-spacing:-4px;font-weight:650;line-height:1}.brand-mark span{color:var(--rust);font-size:33px}.brand-word{font-family:Schibsted,sans-serif;font-size:10px;font-weight:700;letter-spacing:1.8px;line-height:1.9}.brand-word small{font-family:var(--mono);font-size:8px;letter-spacing:1px;font-weight:400}.edition,.eyebrow,.tiny-label,.course-bar,.pace,.simulation-badge,.footer-signature{font-family:var(--mono);font-size:10px;letter-spacing:1.1px}.edition{color:var(--muted)}.edition span{padding:0 18px;color:var(--rust)}.text-button{border:0;background:transparent;padding:10px 0;color:var(--rust);text-align:left;font-size:14px}.text-button span{margin-left:13px}.course-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:13px 4.4%;display:flex;justify-content:space-between;gap:16px;background:var(--white);font-size:9px}.course-bar span:last-child{color:var(--muted);white-space:nowrap}.shell{max-width:1600px;margin:auto;display:grid;grid-template-columns:260px minmax(0,1fr)}.sidebar{padding:44px 26px 40px 30px;border-right:1px solid var(--line)}.side-title{margin-bottom:23px;color:var(--muted)}#mobile-menu{display:none}.chapter-link{display:flex;gap:13px;align-items:flex-start;text-align:left;background:transparent;border:0;width:100%;padding:16px 10px;margin:0 0 4px;border-left:2px solid transparent;border-radius:0 6px 6px 0}.chapter-link:hover{background:#efe8e1}.chapter-link[aria-current=step]{border-left-color:var(--rust);background:#efe5db}.chapter-number{font-family:var(--mono);color:var(--muted);font-size:11px;padding-top:3px;flex:none}.chapter-link[aria-current=step] .chapter-number{color:var(--rust)}.chapter-link .chapter-label{font-size:15px;line-height:1.35}.chapter-link .status{display:block;font-size:11px;color:var(--green);margin-top:5px}.side-footer{margin:40px 10px 0;border-top:1px solid var(--line);padding-top:24px}.tiny-label{color:var(--muted);font-size:9px}.side-footer p{font-size:18px;margin:10px 0 25px}.download-link{font-size:14px;display:flex;justify-content:space-between;gap:12px}.side-footer .text-button{font-size:12px;margin-top:12px}main{min-width:0;padding:42px clamp(24px,4.5vw,75px) 30px}.lesson-topline{display:flex;justify-content:space-between;gap:20px;align-items:center}.eyebrow{color:var(--rust)}.pace{font-size:9px;color:var(--muted)}.pace span:first-child{margin:0 7px}.chapter-heading{max-width:850px;padding:28px 0 22px}h1{font:600 clamp(40px,4.6vw,70px)/1.06 Schibsted,sans-serif;letter-spacing:-2.8px;white-space:pre-line;margin:0 0 23px}h2{font:600 26px/1.2 Schibsted,sans-serif;letter-spacing:-.65px;margin:8px 0 16px}.lede{font-size:20px;line-height:1.5;color:var(--muted);max-width:640px;margin:0}.audio-guide{border:1px solid var(--line);display:flex;align-items:center;gap:19px;background:var(--white);padding:18px 22px;border-radius:8px;max-width:860px}.play-button{width:50px;height:50px;flex:none;display:grid;place-items:center;background:var(--rust);color:white;border:0;border-radius:50%}.play-button.is-playing{background:var(--green)}.audio-info{flex:1;min-width:0}.audio-label{display:flex;justify-content:space-between;align-items:center;gap:15px;font-size:14px}.audio-label span{font:8px var(--mono);color:var(--muted);letter-spacing:.5px}.audio-time{display:flex;justify-content:space-between;font:9px var(--mono);color:var(--muted)}#seek{width:100%;height:12px;display:block;margin:8px 0 6px;accent-color:var(--rust)}.speed-label select{font-size:12px;padding:6px 3px;border:0;background:transparent}.caption{font-size:14px;min-height:53px;padding:12px 1px 10px;color:var(--muted);max-width:860px}.workbench{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(210px,1fr);gap:30px;margin:16px 0 28px}.practice-panel{border:1px solid var(--line);padding:24px;background:var(--white);border-radius:8px;min-width:0}.panel-heading{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:22px}.simulation-badge{font-size:8px;letter-spacing:.4px;color:var(--muted)}.practice-panel h2{font-size:23px}.question{font-size:16px;color:var(--muted);margin:0 0 22px}.choices{display:grid;gap:10px}.choice{text-align:left;border:1px solid var(--line);border-radius:5px;padding:14px 15px;background:var(--white);font-size:15px;line-height:1.4;display:flex;gap:12px}.choice span{color:var(--muted);font:11px var(--mono);padding-top:3px;flex:none}.choice:hover{border-color:var(--rust);background:#fcf7f2}.choice.correct{border-color:var(--green);background:#eaf1eb}.choice.wrong{border-color:var(--rust);background:#faeee7}.feedback{font-size:14px;margin:16px 0 0;min-height:0;color:var(--green)}.feedback:empty{display:none}.feedback.retry{color:var(--rust)}.field-note{padding:7px 0 10px 4px}.note-index{display:block;font-size:49px;line-height:1;color:var(--rust);margin-bottom:20px}.field-note>p:first-of-type{font:500 24px/1.3 Schibsted,sans-serif;letter-spacing:-.6px;margin:14px 0 25px}.note-rule{width:40px;border-top:2px solid var(--rust);margin-bottom:25px}.field-note .action-copy{font-size:15px;line-height:1.55;color:var(--muted);margin:12px 0 0}.prompt-panel{background:var(--dark);color:#f9f3e8;border-radius:8px;padding:23px 25px}.prompt-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.prompt-panel .eyebrow{color:#dfb39a}.small-button{font-size:12px;background:transparent;padding:8px 12px;border:1px solid var(--line);border-radius:4px;min-height:36px}.prompt-panel .small-button{border-color:#667169;color:#f9f3e8}.prompt-panel .small-button:focus-visible{outline-color:#f3b587}pre{font:14px/1.7 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;margin:18px 0 0}.transcript{border-bottom:1px solid var(--line);padding:22px 0;font-size:15px;color:var(--muted)}summary{cursor:pointer;min-height:35px;padding:5px 0;color:var(--ink)}.transcript p{line-height:1.8;max-width:790px}.lesson-navigation{display:flex;justify-content:space-between;align-items:center;gap:14px;margin:28px 0 35px}.primary-button,.secondary-button{border-radius:5px;padding:13px 20px;min-height:46px;font-size:14px;border:1px solid var(--line);background:transparent}.primary-button{background:var(--rust);color:white;border-color:var(--rust)}.primary-button:hover{background:#7c2d12}.primary-button span{margin-left:22px}#chapter-count{font:10px var(--mono);color:var(--muted)}.lesson-footer{border-top:1px solid var(--line);padding-top:18px;color:var(--muted);font-size:12px}.lesson-footer summary{font-size:13px}.lesson-footer li{margin:8px 0}.footer-signature{display:block;margin-top:23px;font-size:8px}.terminal{background:var(--dark);border-radius:6px;padding:18px;color:#edf4e9;font:13px/1.6 var(--mono)}.terminal-top{color:#adbbb1;border-bottom:1px solid #47534b;padding-bottom:10px;font-size:10px;margin-bottom:16px}.terminal label{font-size:12px;display:block;color:#c3ceb9}.terminal-entry{display:flex;align-items:center;gap:10px;margin-top:10px}.terminal-entry input{min-width:0;width:100%;background:transparent;border:0;border-bottom:1px solid #7c8d80;color:white;font-family:var(--mono);padding:9px 2px;border-radius:0}.terminal button{margin-top:16px;color:#f9f3e8;border-color:#79887e}.terminal-output{font-size:12px;color:#c3ceb9;white-space:pre-line;margin:14px 0 0}.reading-preview{padding:18px;border:1px solid var(--line);border-radius:5px;background:#f8f5ed}.reading-preview .tiny-label{display:block;margin-bottom:12px}.book{display:flex;gap:12px;align-items:center;font-size:16px;margin:12px 0;cursor:pointer}.book input{width:19px;height:19px;accent-color:var(--green)}.reading-preview button{margin-top:12px}.step-hint{font-size:13px;color:var(--muted);margin:14px 0 0}.brief-form{display:grid;gap:12px}.brief-form label{font-size:13px}.brief-form input,.brief-form textarea{display:block;width:100%;border:1px solid #b6aa9f;border-radius:4px;margin-top:6px;padding:10px;background:var(--white);font-size:15px}.brief-form textarea{resize:vertical;min-height:75px}.brief-form button{justify-self:start}#setup-panel{border:1px solid var(--line);border-radius:8px;padding:25px;margin:0 0 28px}#setup-panel>label{font-size:14px;margin-right:12px}#os{padding:9px;background:var(--white);border:1px solid #b6aa9f;border-radius:4px;max-width:100%;font-size:14px}.setup-steps{padding-left:22px}.setup-steps li{padding:15px 0}.setup-steps p{font-size:15px;color:var(--muted)}.setup-steps pre{background:#eee7df;padding:12px;margin:10px 0}#completion{background:#eaf1eb;border:1px solid #aebcaf;padding:28px;border-radius:8px;margin-bottom:28px}#completion .eyebrow{color:var(--green)}dialog{width:min(1100px,94vw);border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);padding:24px;max-height:95vh}dialog::backdrop{background:rgb(20 25 20 / .78)}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:25px}.dialog-top h2{font-size:22px;margin:0}dialog video{display:block;width:100%;aspect-ratio:16/9;background:#202824;margin-top:20px;border-radius:5px}dialog p{font-size:14px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:12px 20px;border-radius:5px;font-size:14px;z-index:30;max-width:90vw;text-align:center;box-shadow:0 3px 20px #0002}.toast:empty{display:none}[hidden]{display:none!important}
@media(min-width:1400px){.shell{grid-template-columns:295px minmax(0,1fr)}.sidebar{padding-left:54px;padding-right:32px}.workbench{gap:42px}.chapter-heading{padding-top:35px}}
@media(max-width:1050px){.shell{grid-template-columns:220px minmax(0,1fr)}.sidebar{padding:35px 15px}.workbench{grid-template-columns:1fr;gap:22px}.field-note{display:grid;grid-template-columns:1fr 1fr;gap:10px 28px;padding:0}.note-index,.note-rule{display:none}.field-note>.eyebrow{grid-column:1;grid-row:1}.field-note>p:first-of-type{grid-column:1;grid-row:2;font-size:21px;margin:0}.field-note>.tiny-label{grid-column:2;grid-row:1}.field-note .action-copy{grid-column:2;grid-row:2;margin:0;font-size:14px}.pace{display:none}h1{font-size:47px;letter-spacing:-2px}.edition{display:none}}
@media(max-width:650px){.masthead{height:83px;padding:0 20px;gap:10px}.brand-mark{font-size:34px}.brand-mark span{font-size:28px}.brand{gap:10px}.brand-word{font-size:8px;letter-spacing:1px}.brand-word small{font-size:6px}.masthead .text-button{font-size:12px}.masthead .text-button span{margin-left:5px}.course-bar{padding:12px 20px;font-size:8px;letter-spacing:.3px}.course-bar>span:first-child{max-width:190px}.shell{display:block}.sidebar{padding:0 20px;border:0;border-bottom:1px solid var(--line)}.side-title{display:flex;justify-content:space-between;align-items:center;margin:0}.side-title .eyebrow{font-size:9px}.side-title #mobile-menu{display:block;border:0;background:transparent;font-size:13px;padding:15px 0}.side-title #mobile-menu span{margin-left:15px}#chapter-list{display:none;padding-bottom:10px}#chapter-list.open{display:block}.chapter-link{padding:11px 10px}.side-footer{display:none}main{padding:27px 20px 25px}.chapter-heading{padding:23px 0}h1{font-size:40px;letter-spacing:-1.8px;line-height:1.1;margin-bottom:19px}.lede{font-size:18px}.audio-guide{padding:16px 13px;gap:13px}.play-button{width:43px;height:43px}.audio-label{font-size:13px}.audio-label span{display:none}.speed-label select{font-size:12px;width:48px}.caption{font-size:13px;min-height:64px}.workbench{margin-top:12px;gap:23px}.practice-panel{padding:19px 16px}.panel-heading{gap:8px;margin-bottom:18px}.simulation-badge{font-size:7px;letter-spacing:0}.practice-panel h2{font-size:22px}.choice{font-size:14px;padding:13px 11px}.field-note{display:block;border-left:2px solid var(--rust);padding-left:17px}.field-note>p:first-of-type{font-size:21px;margin:10px 0 22px}.field-note .action-copy{margin:10px 0 0}.prompt-panel{padding:20px 17px}.prompt-panel .eyebrow{font-size:8px}.prompt-heading{gap:8px}.small-button{padding:7px 9px;white-space:nowrap}pre{font-size:12px}.lesson-navigation{gap:9px}.primary-button,.secondary-button{font-size:12px;padding:12px 14px}.primary-button span{margin-left:8px}#chapter-count{font-size:9px}#setup-panel{padding:20px 16px}#os{margin-top:8px}dialog{padding:17px}.dialog-top h2{font-size:17px}.dialog-top{gap:12px}.lesson-footer{line-height:1.6}}
@media(prefers-reduced-motion:no-preference){button,a{transition:background .16s,border-color .16s}.chapter-heading{animation:arrive .35s ease-out}@keyframes arrive{from{opacity:.5;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}}
.resource-strip{display:flex;gap:15px;justify-content:space-between;align-items:center;padding:8px 0 18px;font-size:13px}.resource-strip>span{font:8px var(--mono);color:var(--muted)}@media(max-width:650px){.resource-strip>span{display:none}}
.terminal :focus-visible{outline-color:#f3b587}

.site-logo{display:block;width:170px;height:auto}.setup-steps{list-style:none;padding-left:0}#chapter-count{display:none}@media(max-width:650px){.site-logo{width:136px}}

/* One task at a time, inside a distinct lesson frame. */
body{background:#eee9e2}
.masthead{height:88px;max-width:1440px}
.course-frame{max-width:1400px;margin:0 24px 32px;border:2px solid var(--dark);border-top:5px solid var(--dark);border-radius:10px;overflow:clip;background:var(--white);box-shadow:0 12px 30px #221c1510}
.course-bar{background:var(--dark);color:var(--white);border:0;padding:11px 24px}
.course-bar span:last-child{color:#e2d8ca}
.shell{grid-template-columns:230px minmax(0,1fr)}
.sidebar{background:var(--paper);padding:28px 18px}
.side-title{margin-bottom:16px}.chapter-link{padding:12px 10px}.side-footer{margin-top:25px;padding-top:18px}.side-footer p{font-size:16px}
main{padding:25px clamp(20px,3vw,44px) 20px}
.chapter-heading{padding:15px 0 20px;max-width:900px;animation:none}
h1{font-size:clamp(29px,3.2vw,46px);line-height:1.1;letter-spacing:-1.4px;margin-bottom:12px;white-space:normal}
.lede{font-size:17px;max-width:790px}
.chapter-workspace{border:1px solid #b6aa9f;border-radius:7px;background:var(--white);scroll-margin-top:16px;overflow:clip}
.stage-tabs{display:flex;gap:4px;padding:0 18px;border-bottom:1px solid var(--line);background:var(--paper)}
.stage-tabs button{border:0;border-bottom:3px solid transparent;background:transparent;padding:13px 18px;font-weight:600;font-size:15px;min-height:48px;color:var(--muted)}
.stage-tabs button[aria-selected=true]{color:var(--rust);border-bottom-color:var(--rust)}
.stage-tabs button:hover{background:#efe5db;color:var(--ink)}
.stage-tabs button:focus-visible{outline-offset:-5px}
.stage-panel{padding:24px;min-width:0}
.stage-panel:focus-visible{outline:2px solid var(--rust);outline-offset:-5px}
.audio-guide{max-width:none;padding:13px 16px;gap:16px;background:var(--paper)}
.caption{min-height:48px;padding:10px 0;max-width:none}
.takeaway-note{border-left:3px solid var(--rust);padding:3px 0 3px 18px;margin:10px 0 0}
.takeaway-note p{font:500 22px/1.4 Schibsted,sans-serif;letter-spacing:-.4px;margin:9px 0 0;max-width:790px}
.transcript{padding:16px 0 0;border:0;font-size:14px}
.transcript p{margin-bottom:0;font-size:16px;line-height:1.65}
.practice-panel{border:0;padding:0;background:transparent}
.panel-heading{margin-bottom:12px}.practice-panel h2{margin-top:0}
.question{margin-bottom:16px}.choices{gap:8px}.choice{padding:12px 14px}
.apply-intro>p{font-size:16px;line-height:1.55;margin:8px 0 18px;max-width:780px}
.prompt-panel{padding:18px 20px}.prompt-panel pre{font-size:13px;line-height:1.6;margin-top:13px}
.resource-strip{padding:16px 0 0;flex-wrap:wrap;gap:4px 18px}
.resource-strip .text-button{font-size:13px;text-decoration:underline;text-underline-offset:4px}
.prompt-preview{margin-top:12px}.prompt-preview summary{color:#f9f3e8;font-size:13px}.prompt-preview summary:focus-visible{outline-color:#f3b587}
.lesson-navigation{margin:0;padding:15px 24px;border-top:1px solid var(--line);background:var(--paper)}
.lesson-footer{margin-top:20px;padding-top:12px}.footer-signature{margin-top:10px}
#setup-panel{border:0;padding:0;margin:0}
#setup-panel h2{margin-top:0;font-size:22px}
.setup-controls{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.setup-controls [aria-pressed=true]{background:var(--dark);color:var(--white);border-color:var(--dark)}
.setup-steps{margin:10px 0}.setup-steps li{padding:8px 0}.setup-steps p{margin:8px 0}
#completion{margin:20px 0 0}
dialog{border:2px solid var(--dark);box-shadow:0 24px 80px #0005}
dialog video{border:6px solid var(--dark);box-shadow:0 5px 15px #221c1520}
@media(min-width:1448px){.course-frame{margin-left:auto;margin-right:auto}}
@media(max-width:1050px){.shell{grid-template-columns:195px minmax(0,1fr)}.sidebar{padding:25px 12px}.chapter-link .chapter-label{font-size:14px}.stage-panel{padding:20px}.stage-tabs{padding:0 8px}.stage-tabs button{padding:12px 13px}.lesson-navigation{padding:14px 20px}.prompt-heading{flex-wrap:wrap;gap:8px}}
@media(max-width:800px){.shell{display:block}.sidebar{padding:0 20px;border-right:0;border-bottom:1px solid var(--line)}.side-title{display:flex;align-items:center;justify-content:space-between;margin:0}.side-title #mobile-menu{display:block;border:0;background:transparent;padding:12px 0;font-size:13px}.side-title #mobile-menu span{margin-left:12px}#chapter-list{display:none;padding-bottom:10px}#chapter-list.open{display:block}.side-footer{display:none}main{padding:20px}.chapter-heading{padding:12px 0 18px}}
@media(max-width:650px){.masthead{height:76px;padding:0 16px}.site-logo{width:125px}.course-frame{margin:0 10px 20px;border-radius:8px}.course-bar{padding:10px 14px}.course-bar>span:first-child{max-width:175px}.sidebar{padding:0 14px}main{padding:18px 14px 14px}.chapter-heading{padding:10px 0 16px}h1{font-size:29px;letter-spacing:-1px;margin-bottom:10px}.lede{font-size:16px;line-height:1.45}.stage-tabs{padding:0 5px;gap:0}.stage-tabs button{flex:1;padding:12px 7px;font-size:13px;white-space:nowrap}.stage-panel{padding:17px 14px}.audio-guide{padding:12px 10px;gap:10px}.play-button{width:39px;height:39px}.takeaway-note{padding-left:13px}.takeaway-note p{font-size:19px}.caption{font-size:13px}.practice-panel h2{font-size:21px}.simulation-badge{font-size:7px}.question{font-size:15px}.choice{padding:11px 10px;font-size:14px}.prompt-panel{padding:15px}.prompt-panel pre{font-size:12px}.resource-strip{font-size:12px}.lesson-navigation{padding:13px 14px;gap:8px}.lesson-navigation button{font-size:12px;padding:10px 12px;min-height:44px}.setup-controls{gap:6px}.setup-controls button{font-size:11px;padding:8px}#os{margin:6px 0 0}.footer-signature{display:none}dialog video{border-width:4px}}