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.studio-tabs{scrollbar-width:none}.studio-tabs::-webkit-scrollbar{display:none}

.learning-tabs{display:flex;gap:26px;border-bottom:1px solid var(--line);margin:0 0 28px;overflow:auto;scrollbar-width:none}.learning-tabs::-webkit-scrollbar{display:none}.learning-tabs a{white-space:nowrap;min-height:48px;padding:12px 0;color:var(--muted);font-size:.94rem;border-bottom:2px solid transparent}.learning-tabs a[aria-current]{color:var(--accent);border-color:var(--accent)}.learning-breadcrumb{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:0 0 25px;font-size:.9rem;color:var(--muted)}.learning-breadcrumb a{min-height:44px;display:inline-flex;align-items:center}.chapter-situation{font-size:1.1rem;line-height:1.9;margin:22px 0 32px}.reader-orientation{color:var(--muted);font-size:.95rem;margin:0 0 30px}.reader-heading h1{font-size:clamp(1.8rem,3vw,2.4rem);line-height:1.28}.reader-tools{display:grid;gap:8px;margin:26px 0}.reader-tools .reader-symbols{margin-top:0}.reader-summary{border-top:1px solid var(--line);padding-top:22px;margin-top:38px}.reader-summary h2{font-size:1.25rem}.reader-example-label{color:var(--muted);font-size:.9rem}.case-separator{border-top:1px solid var(--line);margin:38px 0;padding-top:22px}.career-route-intro{max-width:70ch}.career-route-intro p{line-height:1.9}.career-route-intro h2{font-size:1.7rem}.learning-tabs+ .page-heading{margin-top:0}@media(max-width:360px){.learning-tabs{gap:18px}.learning-tabs a{font-size:.875rem}}

.chapter-preparation{margin:35px 0}.chapter-preparation h2{font-size:1.25rem}.chapter-preparation li{margin:12px 0}.reader-further{border-block:1px solid var(--line);padding:18px 0;margin:22px 0}.reader-further summary{font-size:1rem;color:var(--accent);line-height:1.6}.career-role-picker{padding:22px;border-radius:16px;margin-bottom:30px}.career-role-picker label{display:grid;gap:12px}.career-role-picker .button{margin-top:16px}.career-route-intro{margin:35px 0}.career-route-intro h3{font-size:1.1rem}.lexicon-return{display:block;min-height:44px;margin-bottom:20px}.reader-top{gap:12px}.reader-top>a{font-size:.85rem}.reader-top>span{font-size:.8rem;white-space:nowrap}
/* Developed chapters: tables, figures, comprehension questions and renewable exercises. */
.reader-table{margin:28px 0}.reader-table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.reader-table table{width:100%;min-width:420px;border-collapse:collapse;font-size:.95rem}.reader-table caption{caption-side:top;text-align:left;padding:14px 16px 8px;font-weight:650;color:var(--ink)}.reader-table th,.reader-table td{padding:10px 14px;border-top:1px solid var(--line);vertical-align:top;text-align:left;line-height:1.5;overflow-wrap:normal;min-width:7ch}.reader-table thead th{border-top:0;color:var(--muted);font-weight:600;font-size:.85rem;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}.reader-table tbody th{font-weight:500;color:var(--ink)}.reader-table .num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}.reader-table .row-total th,.reader-table .row-total td{font-weight:700;border-top:2px solid var(--muted);background:var(--raised)}.reader-table .row-sub th,.reader-table .row-sub td{font-weight:600;color:var(--muted)}.reader-table figcaption,.reader-figure figcaption{font-size:.875rem;color:var(--muted);margin-top:10px;line-height:1.6}
.reader-figure{margin:30px 0}.reader-figure svg{display:block;width:100%;height:auto;max-width:680px;margin:auto;font-family:inherit}.reader-figure .fig-narrow{display:none}.reader-figure .fig-narrow svg{max-width:360px}.reader-figure text{fill:var(--ink)}.reader-figure .fig-label{fill:var(--muted)}.reader-figure .fig-value{fill:var(--ink);font-weight:600}.reader-figure .fig-axis{stroke:var(--muted);stroke-width:1.2}.reader-figure .fig-pos{fill:var(--accent)}.reader-figure .fig-neg{fill:#e08a8a}.reader-figure .fig-total{fill:var(--muted)}.reader-figure .fig-zero{fill:var(--surface);stroke:var(--muted);stroke-width:1.5}.reader-figure .fig-pos-line{stroke:var(--accent);stroke-width:2}.reader-figure .fig-neg-line{stroke:#e08a8a;stroke-width:2}.reader-figure .fig-zero-line{stroke:var(--muted);stroke-width:1.5;stroke-dasharray:3 3}.reader-figure .fig-box{fill:var(--raised);stroke:var(--line);stroke-width:1.5}.reader-figure .fig-box-label{fill:var(--ink);font-weight:600}.reader-figure .fig-arrow{stroke:var(--muted);stroke-width:1.5}.reader-figure .fig-arrow-head{fill:var(--muted)}.reader-figure .fig-series-0{fill:var(--accent)}.reader-figure .fig-series-1{fill:#e0b36a}.reader-figure .fig-series-2{fill:var(--success)}
.reader-callout{border-left:3px solid var(--accent);background:var(--raised);border-radius:0 14px 14px 0;padding:16px 20px;margin:28px 0}.reader-callout strong{display:block;margin-bottom:6px}.reader-callout p{margin:0}
.reading-example{margin:30px 0}.reading-example h3{margin-top:0}
.reader-questions{margin:38px 0}.reader-questions h2{font-size:1.38rem;margin:0 0 8px}.reader-question{border-bottom:1px solid var(--line);padding:6px 0}.reader-question summary{padding:12px 0;font-weight:600;line-height:1.6;cursor:pointer;list-style:none;display:flex;gap:12px}.reader-question summary::before{content:"+";color:var(--accent);font-weight:700;flex-shrink:0;width:16px}.reader-question[open] summary::before{content:"−"}.reader-question p{color:var(--muted);margin:0 0 16px 28px}
.reader-exercise{border:1px solid var(--line);border-radius:18px;background:var(--surface);padding:22px;margin:26px 0}.reader-exercise h2{font-size:1.2rem;margin:0 0 6px}.reader-exercise .exercise-index{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.reader-exercise form{display:grid;gap:12px;margin-top:16px}.reader-exercise input{width:100%;padding:14px 16px;font-size:1.2rem}.reader-exercise .exercise-actions{display:flex;flex-wrap:wrap;gap:10px}.reader-exercise .exercise-actions .button{flex:1;min-width:160px}.reader-exercise .studio-feedback{margin-top:16px}.reader-exercise.done{border-color:var(--success)}.exercise-summary{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;color:var(--muted);margin:0 0 8px}
@media(max-width:800px){.reader-table table{font-size:.875rem}.reader-table th,.reader-table td{padding:8px 10px}}
.reader-flow .flow-list{list-style:none;display:flex;flex-wrap:wrap;align-items:stretch;justify-content:center;gap:0;margin:0;padding:0}
.reader-flow .flow-node{flex:1 1 130px;max-width:190px;display:flex;align-items:center;justify-content:center;text-align:center;padding:14px 12px;border-radius:12px;background:var(--raised);border:1px solid var(--line);color:var(--ink);font-weight:600;font-size:.9rem;line-height:1.35}
.reader-flow .flow-arrow{flex:0 0 auto;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:0 8px;color:var(--muted);font-size:.75rem;text-align:center}
.reader-flow .flow-arrow::after{content:"→";font-size:1.1rem;line-height:1}
.reader-flow .flow-arrow span{max-width:9ch;overflow-wrap:break-word}
@media(max-width:640px){
 .reader-figure .fig-wide{display:none}
 .reader-figure .fig-narrow{display:block}
 .reader-flow .flow-list{flex-direction:column;align-items:stretch}
 .reader-flow .flow-node{max-width:none;flex:0 0 auto}
 .reader-flow .flow-arrow{flex-direction:row;gap:8px;padding:6px 0}
 .reader-flow .flow-arrow::after{content:"↓"}
}