:root{--ink:#15213b;--muted:#54627a;--blue:#315ecc;--paper:#fff;--bg:#f2f4f9;--line:#d9dfea;--yellow:#fff0a8;--green:#cceddb;--purple:#e3d6fa;--sky:#d2e6ff}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:#204db8;text-underline-offset:3px}button,input,select,textarea{font:inherit}button,.file-label{border:1px solid #bac6de;background:#fff;color:var(--ink);border-radius:7px;padding:7px 11px;cursor:pointer}button:hover{background:#eaf0ff}button:disabled{opacity:.55;cursor:default}:focus-visible{outline:3px solid #e09b23;outline-offset:3px}header{height:94px;background:#13213d;color:white;display:flex;align-items:center;justify-content:space-between;padding:15px 28px;position:sticky;top:0;z-index:5;border-bottom:4px solid #759cf9}.brand{color:white;text-decoration:none;letter-spacing:1px;font-size:20px}.brand span{display:block;font-size:12px;letter-spacing:1.8px;color:#bed0f4}.edition{text-align:right;font-size:11px;letter-spacing:1px}.edition span{color:#becce6;letter-spacing:0}.layout{display:grid;grid-template-columns:245px minmax(0,850px) 265px;max-width:1500px;margin:auto}nav{padding:24px 15px;position:sticky;top:94px;height:calc(100vh - 94px);overflow-y:auto}nav label{display:block;font-size:12px;font-weight:700;color:var(--muted)}nav input,nav select{width:100%;padding:8px;margin:4px 0 14px;border:1px solid #bdc7d9;border-radius:6px;background:white}#chapter-list a{display:block;text-decoration:none;padding:8px 10px;border-left:3px solid transparent;border-radius:4px;margin:2px 0;font-size:14px;color:#243454}#chapter-list a small{display:block;font-size:10px;color:#52617b;letter-spacing:.6px}#chapter-list a.active{background:#e1e9ff;border-left-color:var(--blue);font-weight:700}#chapter-list a.done span:after{content:' ✓';color:#236849}.nav-tools{border-top:1px solid var(--line);padding-top:18px;margin-top:20px;display:grid;gap:8px}.nav-tools button,.file-label{font-size:12px;text-align:left}.file-label input{width:100%;margin:2px 0;padding:0;font-size:10px}main{background:var(--paper);margin:20px 0 45px;border:1px solid var(--line);border-radius:12px;padding:34px;min-width:0}.eyebrow{font-size:10px;letter-spacing:1.2px;font-weight:700;color:#536481}.decision{border-left:4px solid var(--blue);padding:12px 18px;background:#edf2ff;margin:20px 0 22px}.overline{font-size:10px;font-weight:800;letter-spacing:1.5px;margin:0 0 7px;color:#4d628b}.decision>p:last-child{font-size:22px;line-height:1.4;margin:0;font-weight:650}article h1{font-size:30px;line-height:1.2;letter-spacing:-.6px;margin-top:34px}h2{font-size:23px;line-height:1.3;margin-top:38px}h3{font-size:18px;line-height:1.4;margin-top:24px}p{margin:13px 0}li{margin:6px 0}ul,ol{padding-left:25px}.player{padding:14px;background:#f5f7fc;border:1px solid var(--line);border-radius:8px}.player div{display:flex;gap:7px;flex-wrap:wrap;align-items:center;margin:4px 0}.player button,.player label,.player select{font-size:12px}.player label{display:flex;gap:5px;align-items:center}.player #voice{max-width:160px}.player p{font-size:11px;color:var(--muted);margin:8px 0 0}.player #read{background:var(--blue);color:white;border-color:var(--blue)}aside{padding:20px 17px;min-width:0}.context{position:sticky;top:115px;padding:20px;border:1px solid #d4ddeb;background:#eaf0fa;border-radius:10px;max-height:calc(100vh - 140px);overflow:auto}.context h2{font-size:19px;margin:12px 0}.context h3{font-size:13px;text-transform:uppercase;letter-spacing:.7px;margin-top:22px}.context p{font-size:13px;line-height:1.65}.context .small{font-size:11px;color:var(--muted)}table{border-collapse:collapse;font-size:13px;width:100%;display:block;overflow:auto;margin:20px 0}th,td{padding:10px 12px;border:1px solid var(--line);text-align:left;vertical-align:top;min-width:105px}th{background:#eaf0fb}td{background:#fcfdff}pre{background:#14223c;color:#e9effc;padding:20px;overflow:auto;border-radius:8px;font-size:12px;position:relative}code{overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,monospace;font-size:.87em}pre code{font-size:12px;white-space:pre}.copy{display:block;margin:5px 0;font-size:11px}img{max-width:100%;height:auto;border:1px solid var(--line);border-radius:6px}.worksheet{padding:20px;background:#f5f8fe;border:1px solid var(--line);border-radius:9px;margin-top:40px}.worksheet h2{margin-top:0}.worksheet label{font-size:13px;display:block}.worksheet textarea{width:100%;padding:12px;margin:8px 0 15px;border:1px solid #a8b7d2;border-radius:6px;resize:vertical;background:#fff}.scores{display:flex;flex-wrap:wrap;gap:10px;margin-top:15px}.scores label{font-size:10px}.scores select{display:block}#saved{font-size:11px;color:#38654f}footer{margin-top:35px;font-size:12px;color:var(--muted)}#menu{display:none}.skip{position:fixed;top:-100px;left:20px;z-index:100;background:white;padding:10px}.skip:focus{top:10px}.exercise-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.exercise-grid a{padding:15px;background:#edf2fd;text-decoration:none;border:1px solid var(--line);border-radius:6px}.model{background:#f6f1e7;padding:16px;border:1px solid #dfd3ba;border-radius:7px}.model summary{cursor:pointer;font-weight:700}.hint{font-size:13px;color:var(--muted)}dialog{width:min(820px,94vw);max-height:85vh;border:1px solid #aab7d2;border-radius:12px;padding:0;color:var(--ink)}dialog::backdrop{background:#111d35aa}.dialog-head{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;background:#edf2ff;padding:12px 20px;border-bottom:1px solid var(--line);z-index:2}.dialog-head h2{font-size:20px;margin:0}#dialog-body{padding:20px}#dialog-body textarea,#dialog-body input[type=search]{width:100%;padding:10px}#dialog-body textarea{min-height:90px}.highlight-card{border-bottom:1px solid var(--line);padding:15px 0}.highlight-card blockquote{margin:10px 0;padding:10px 15px;border-left:3px solid var(--blue)}mark{cursor:pointer;border-radius:3px;color:inherit;background:var(--yellow)}mark[data-color=blue]{background:var(--sky)}mark[data-color=green]{background:var(--green)}mark[data-color=purple]{background:var(--purple)}#selection-tools{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:8;padding:10px;background:#15213b;border-radius:9px;box-shadow:0 5px 30px #14213b50;white-space:nowrap}#selection-tools button,#selection-tools select{font-size:12px}#notice{position:fixed;bottom:10px;right:12px;max-width:350px;background:#13213d;color:white;font-size:12px;padding:0;border-radius:6px;z-index:20}#notice:not(:empty){padding:10px 15px}#results a{display:block;font-size:12px;padding:7px;border-bottom:1px solid var(--line)}#results p{font-size:12px}.term{padding:10px 0;border-bottom:1px solid var(--line)}.term h3{margin:8px 0}.term p{font-size:14px}.category-labels{display:grid;grid-template-columns:1fr 1fr;gap:10px}.category-labels input{width:100%}@media(min-width:1450px){.layout{grid-template-columns:250px minmax(0,900px) 285px}}@media(max-width:1100px){.layout{grid-template-columns:220px minmax(0,1fr)}aside{grid-column:2;padding:0 0 20px}.context{position:static;max-height:none}main{margin-right:15px;margin-bottom:15px}}@media(max-width:700px){header{height:84px;padding:12px 16px}.brand{font-size:16px}.edition{display:none}#menu{display:block}.layout{display:block}nav{display:none;position:fixed;left:0;top:84px;width:270px;height:calc(100vh - 84px);background:#f2f4f9;z-index:9;box-shadow:5px 0 20px #17284a33}body.menu-open nav{display:block}main{margin:12px;padding:20px;border-radius:8px}aside{padding:0 12px 20px}article h1{font-size:27px}.decision>p:last-child{font-size:20px}.exercise-grid{grid-template-columns:1fr}#selection-tools{width:96%;white-space:normal;text-align:center;bottom:10px}.category-labels{grid-template-columns:1fr}}@media print{header,nav,aside,.player,.worksheet,.copy,#selection-tools,#notice,.skip{display:none!important}.layout{display:block}main{margin:0;padding:0;border:0}body{background:white;font:11pt/1.5 Georgia,serif;color:black}.decision{background:white;break-inside:avoid}h1,h2,h3{break-after:avoid}table{display:table;font-size:9pt;overflow:visible}pre{white-space:pre-wrap;overflow:visible;color:black;background:#f3f3f3;break-inside:avoid}pre code{white-space:pre-wrap;font-size:9pt}a{color:black;text-decoration:underline}.exercise-grid{display:block}.model{break-inside:avoid}img{max-height:190mm}.eyebrow{font-size:8pt}footer{font-size:8pt}}
/* Connected decision tour; progressively enhanced and fully readable in print. */
.tour-controls{display:grid;grid-template-columns:1fr 1fr;gap:9px;padding:16px;border:2px solid #a9bce9;border-radius:9px;background:#edf2ff;margin:22px 0}.tour-controls label,.tour-controls select,.tour-controls p{grid-column:1/-1}.tour-controls label{font-weight:700}.tour-controls select{max-width:100%;width:100%;padding:9px;border:1px solid #9caed0;border-radius:6px}.tour-controls p{font-size:13px;margin:0}.tour-step{padding:4px 0 20px}.tour-enabled .tour-step[hidden]{display:none}.tour-response{border-top:1px solid var(--line);padding-top:18px;margin-top:25px}.tour-response label{display:block;font-size:14px;margin:8px 0}.tour-response textarea{width:100%;min-height:110px;border:1px solid #aebcd5;border-radius:7px;padding:10px}.chart-decision{border:1px solid #b8c7df;border-radius:8px;margin:14px 0;padding:13px;overflow-wrap:anywhere}.chart-decision summary{font-weight:700;cursor:pointer}.chart-decision img{max-width:100%;height:auto}.chart-decision[open]{border-left:4px solid var(--blue)}
@media(max-width:600px){.tour-controls{padding:11px}.tour-controls button{font-size:12px}.chart-decision{padding:10px}.tour-controls select{font-size:14px}}
@media print{.tour-controls,.tour-response,[data-copy-spoken]{display:none!important}.tour-enabled .tour-step[hidden]{display:block!important}.chart-decision{break-inside:auto}}
.tour-background{border:1px solid var(--line);border-radius:8px;padding:12px 15px;margin:15px 0}.tour-background>summary{font-weight:650;cursor:pointer}