/* The course keeps its lesson text readable before enhancement. */
.course-main{max-width:1160px;padding-top:28px;padding-bottom:64px}.course-main [hidden]{display:none!important}.course-main *{box-sizing:border-box}.course-main a{color:var(--accent)}.course-main :is(a,button,input,summary):focus-visible{outline:3px solid var(--accent);outline-offset:4px}.course-skip{position:absolute;left:20px;top:-80px;z-index:1000;background:var(--bg-card);color:var(--text-primary);padding:12px}.course-skip:focus{top:12px}.course-main .breadcrumbs{margin-bottom:28px}.course-hero{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,.8fr);gap:48px;align-items:center;padding:22px 0 38px}.course-eyebrow{text-transform:uppercase;letter-spacing:.11em;font-size:.72rem;font-weight:700;color:var(--accent);line-height:1.6;margin:0 0 14px}.course-eyebrow>span{margin-right:5px}.course-hero h1{font-size:clamp(2.2rem,5vw,3.65rem);letter-spacing:-.05em;line-height:1.06;margin:0 0 22px;max-width:650px}.course-deck{max-width:560px;font-size:1.1rem;line-height:1.8;color:var(--text-secondary)}.course-facts{list-style:none;display:flex;flex-wrap:wrap;gap:9px 22px;margin:24px 0;padding:0;font-size:.86rem;color:var(--text-secondary)}.course-facts strong{color:var(--text-primary)}.course-button{display:inline-flex;align-items:center;justify-content:center;gap:14px;min-height:46px;padding:12px 18px;border:1px solid var(--border-color);border-radius:7px;background:var(--bg-card);color:var(--text-primary)!important;font:inherit;font-size:.9rem;font-weight:600;line-height:1.45;text-decoration:none;cursor:pointer;max-width:100%}.course-button:hover{border-color:var(--accent)}.course-button-primary{background:#2467a4;border-color:#2467a4;color:#fff!important}.course-button-primary:hover{background:#1b578b;border-color:#1b578b}.course-button-danger{color:var(--red,#c84a4a)!important}.course-hero-note{font-size:.77rem;line-height:1.7;color:var(--text-tertiary);margin:12px 0 0}.course-route{border:1px solid var(--border-color);border-radius:14px;background:var(--bg-card);padding:24px}.course-route-kicker{display:block;font-size:.63rem;letter-spacing:.13em;color:var(--text-tertiary);margin-bottom:22px}.course-route-stop{display:flex;align-items:center;gap:15px}.course-route-icon{width:42px;height:42px;flex:0 0 42px;display:grid;place-items:center;background:var(--accent-light,rgba(36,103,164,.12));border-radius:10px;color:var(--accent)}.course-route-icon svg{width:21px;height:21px}.course-route-stop strong{display:block;font-size:.91rem;font-weight:600;line-height:1.45}.course-route-stop span:not(.course-route-icon){display:block;font-size:.74rem;color:var(--text-secondary);line-height:1.65;margin-top:2px}.course-route-line{display:block;width:1px;height:22px;background:var(--border-color);margin:3px 0 3px 21px}.course-route-foot{display:block;font-size:.72rem;color:var(--text-tertiary);padding-top:20px;margin-top:20px;border-top:1px solid var(--border-color);line-height:1.6}.course-progress-strip{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);align-items:center;gap:30px;padding:19px 22px;border:1px solid var(--border-color);border-radius:9px;background:var(--bg-card);margin:0 0 32px}.course-progress-strip label{display:block;font-size:.82rem;font-weight:600;margin-bottom:8px}.course-progress-strip progress{display:block;width:100%;height:7px;border:0;border-radius:8px;overflow:hidden;accent-color:var(--accent);background:var(--border-color)}.course-progress-strip progress::-webkit-progress-bar{background:var(--border-color);border-radius:8px}.course-progress-strip progress::-webkit-progress-value{background:#337fc0;border-radius:8px}.course-progress-strip p{font-size:.76rem;color:var(--text-secondary);line-height:1.7;margin:0}.course-progress-strip p[data-warning=true]{color:var(--text-primary)}.course-layout{display:grid;grid-template-columns:275px minmax(0,1fr);gap:40px;align-items:start}.course-sidebar{min-width:0;position:sticky;top:94px}.course-sidebar nav{border:1px solid var(--border-color);border-radius:10px;background:var(--bg-card);overflow:hidden}.course-sidebar h2{font-size:.8rem;font-weight:600;margin:0;padding:18px 18px 14px;border-bottom:1px solid var(--border-color)}.course-sidebar ol{list-style:none;padding:0;margin:0}.course-sidebar li+li{border-top:1px solid var(--border-color)}.course-sidebar li a{display:flex;gap:11px;align-items:center;padding:15px 14px;color:var(--text-secondary);text-decoration:none;border-left:3px solid transparent;min-height:72px}.course-sidebar li a:hover,.course-sidebar li a[aria-current=step]{background:var(--accent-light,rgba(36,103,164,.08));color:var(--text-primary)}.course-sidebar li a[aria-current=step]{border-left-color:var(--accent)}.course-lesson-number{font:600 .72rem monospace;align-self:flex-start;padding-top:4px;color:var(--text-tertiary)}.course-lesson-link-copy{min-width:0;flex:1}.course-lesson-link-copy strong{display:block;font-size:.8rem;line-height:1.5;font-weight:600}.course-lesson-link-copy>span{display:block;font-size:.66rem;line-height:1.65;margin-top:3px;color:var(--text-tertiary)}.course-lesson-check{visibility:hidden;flex:0 0 16px;color:var(--accent);font-weight:700}.course-sidebar [data-complete=true] .course-lesson-check{visibility:visible}.course-local-note{padding:18px 3px;color:var(--text-secondary);font-size:.76rem;line-height:1.75}.course-local-note>strong{font-weight:600;color:var(--text-primary)}.course-local-note p{margin:6px 0 10px}.course-text-button{display:inline-block;min-height:44px;padding:9px 0;border:0;background:none;color:var(--accent);text-decoration:underline;text-underline-offset:3px;font:inherit;cursor:pointer;text-align:left}.course-reset-confirm{padding:14px;border:1px solid var(--border-color);border-radius:6px;margin-top:8px}.course-reset-confirm .course-button{font-size:.72rem;padding:8px 12px}.course-content{min-width:0}.course-lesson{scroll-margin-top:105px;border:1px solid var(--border-color);border-radius:12px;background:var(--bg-card);padding:32px;margin-bottom:30px}.course-lesson h2{font-size:clamp(1.55rem,3vw,2rem);line-height:1.25;letter-spacing:-.035em;margin:0 0 16px;scroll-margin-top:105px}.course-lesson h2:focus{outline:none}.course-lesson h2:focus-visible{outline:2px solid var(--accent);outline-offset:6px}.course-lesson-summary{font-size:1rem;line-height:1.75;color:var(--text-secondary);margin:0 0 24px}.course-lesson-completed{font-size:.8rem;color:var(--accent);padding:10px 14px;border:1px solid var(--border-color);border-radius:6px;line-height:1.6}.course-prose{font-size:.97rem;line-height:1.85;color:var(--text-secondary)}.course-prose>p{margin:18px 0}.course-prose ul{padding-left:23px;margin:18px 0}.course-prose li{margin:9px 0}.course-scenario{border:1px solid var(--border-color);border-left:3px solid var(--accent);border-radius:5px;background:var(--bg-secondary);padding:17px 19px;margin:24px 0}.course-scenario p{margin:0}.course-scenario-label{font-size:.72rem!important;font-weight:700;color:var(--accent);letter-spacing:.04em;margin-bottom:8px!important;line-height:1.6}.course-takeaway{padding-top:20px;border-top:1px solid var(--border-color)}.course-takeaway strong{color:var(--text-primary)}.course-ledger{padding:18px;border:1px solid var(--border-color);border-radius:6px;margin:24px 0}.course-ledger figcaption{font-size:.78rem;font-weight:600;color:var(--text-primary);margin-bottom:13px}.course-ledger dl{margin:0}.course-ledger dl>div{display:flex;justify-content:space-between;gap:20px;padding:10px 0;border-bottom:1px solid var(--border-color)}.course-ledger dt{font-size:.77rem}.course-ledger dd{font-family:monospace;font-size:.86rem;margin:0;white-space:nowrap;color:var(--text-primary)}.course-ledger>p{font-size:.76rem;line-height:1.65;margin:13px 0 0}.course-quiz{margin-top:32px;padding-top:28px;border-top:1px solid var(--border-color)}.course-quiz h3,.course-further h3{font-size:1.05rem;font-weight:600;letter-spacing:-.02em;margin:0 0 10px}.course-quiz-intro{font-size:.8rem;line-height:1.7;color:var(--text-secondary)}.course-quiz fieldset{border:0;min-width:0;padding:0;margin:26px 0;scroll-margin-top:105px}.course-quiz legend{padding:0;margin:0 0 12px;width:100%;font-weight:600;font-size:.9rem;line-height:1.7}.course-question-number{color:var(--accent);padding-right:4px}.course-option{display:flex;gap:11px;align-items:flex-start;padding:12px 14px;border:1px solid var(--border-color);border-radius:6px;margin:9px 0;cursor:pointer;font-size:.85rem;color:var(--text-secondary);line-height:1.7;min-height:48px}.course-option:hover{border-color:var(--accent)}.course-option:has(input:checked){border-color:var(--accent);background:var(--accent-light,rgba(36,103,164,.08));color:var(--text-primary)}.course-option input{flex:0 0 18px;accent-color:var(--accent);width:18px;height:18px;margin:4px 0 0;scroll-margin-top:105px}.course-option span{overflow-wrap:anywhere;min-width:0}.course-answer-feedback{font-size:.82rem;line-height:1.8;margin:12px 0 0;padding:12px 14px;background:var(--bg-secondary);border-left:3px solid var(--accent);border-radius:4px;color:var(--text-secondary)}.course-answer-feedback[data-result=wrong],.course-answer-feedback[data-result=missing]{border-left-color:#b7853b}.course-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:20px 0 0}.course-quiz-status{font-size:.85rem;line-height:1.75;color:var(--text-primary);margin:16px 0 0;min-height:1.75em}.course-further{border-top:1px solid var(--border-color);margin-top:25px;padding-top:24px}.course-further ul{padding-left:18px;margin:12px 0;font-size:.82rem;line-height:1.8}.course-further li{margin:7px 0}.course-further a{text-underline-offset:3px}.course-sources{margin-top:16px;font-size:.76rem;line-height:1.75;color:var(--text-secondary)}.course-sources summary,.course-answer-key summary{min-height:44px;align-content:center;cursor:pointer;color:var(--accent)}.course-sources p{font-size:.72rem}.course-notice{padding:18px 20px;margin-bottom:24px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;line-height:1.75;font-size:.86rem}.course-finish{padding:30px;border:1px solid var(--accent);border-radius:12px;background:var(--bg-card);margin-bottom:30px;scroll-margin-top:110px}.course-finish-symbol{display:grid;place-items:center;width:44px;height:44px;background:var(--accent-light,rgba(36,103,164,.12));border-radius:50%;color:var(--accent);font-size:1.4rem;margin-bottom:20px}.course-finish h2{font-size:1.65rem;line-height:1.3;letter-spacing:-.03em;margin:10px 0 18px}.course-finish>p,.course-finish li{color:var(--text-secondary);line-height:1.8;font-size:.92rem}.course-finish ul{padding-left:20px}.course-finish .course-finish-note{font-size:.76rem;margin-top:20px}.course-about{margin-top:22px;border-block:1px solid var(--border-color);font-size:.82rem;line-height:1.8;color:var(--text-secondary)}.course-about summary{min-height:62px;align-content:center;cursor:pointer;color:var(--text-primary)}.course-about>div{max-width:820px;padding-bottom:18px}.course-about p{margin:12px 0}.course-answer-key{padding-top:20px;color:var(--text-secondary);font-size:.88rem;line-height:1.8}
@media(max-width:900px){.course-hero{grid-template-columns:minmax(0,1fr) 290px;gap:24px}.course-layout{grid-template-columns:235px minmax(0,1fr);gap:22px}.course-lesson{padding:25px}.course-route{padding:21px}.course-route-stop{gap:12px}.course-route-stop strong{font-size:.81rem}}
@media(max-width:720px){.course-main{padding-top:20px}.course-hero{grid-template-columns:1fr;padding:12px 0 26px;gap:22px}.course-hero h1{font-size:2.45rem;max-width:500px}.course-deck{font-size:1rem;line-height:1.8}.course-facts{font-size:.8rem;gap:8px 16px;margin:20px 0}.course-route{display:none}.course-hero-note{font-size:.73rem}.course-progress-strip{grid-template-columns:1fr;gap:12px;padding:17px 18px;margin-bottom:22px}.course-layout{grid-template-columns:1fr;gap:20px}.course-sidebar{position:static}.course-sidebar h2{padding:15px}.course-sidebar li a{padding:12px;min-height:64px}.course-sidebar ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.course-sidebar li+li{border-top:0}.course-sidebar li{border-top:1px solid var(--border-color)!important}.course-sidebar li:nth-child(-n+2){border-top:0!important}.course-sidebar li:nth-child(odd){border-right:1px solid var(--border-color)}.course-lesson-link-copy strong{font-size:.72rem}.course-lesson-link-copy>span{font-size:.61rem}.course-lesson-number{font-size:.66rem}.course-lesson-check{flex-basis:10px;font-size:.8rem}.course-local-note{padding:12px 3px;font-size:.73rem}.course-local-note>strong,.course-local-note>p{display:none}.course-text-button{font-size:.73rem;padding:8px 0;min-height:36px}.course-lesson{padding:23px 18px;border-radius:9px}.course-lesson h2{font-size:1.65rem}.course-lesson-summary{font-size:.94rem}.course-prose{font-size:.92rem;line-height:1.85}.course-option{padding:11px 12px;font-size:.81rem}.course-quiz legend{font-size:.86rem}.course-actions .course-button{font-size:.8rem}.course-finish{padding:23px 20px}.course-finish h2{font-size:1.5rem}.course-ledger{padding:14px}.course-ledger dl>div{display:block;padding:8px 0}.course-ledger dd{margin-top:3px}.course-scenario{padding:15px}.course-eyebrow{font-size:.66rem}.course-reset-confirm{max-width:400px}.course-reset-confirm p{display:block}.course-about summary{line-height:1.6;padding:15px 0}}
@media(max-width:360px){.course-sidebar ol{grid-template-columns:1fr}.course-sidebar li:nth-child(2){border-top:1px solid var(--border-color)!important}.course-sidebar li:nth-child(odd){border-right:0}.course-lesson-link-copy strong{font-size:.8rem}.course-lesson-link-copy>span{font-size:.68rem}.course-hero h1{font-size:2.1rem}}
@media(prefers-reduced-motion:reduce){.course-main *{scroll-behavior:auto!important}}
@media print{.course-hero,.course-sidebar,.course-progress-strip,.course-quiz,.course-about,.site-header,.site-footer{display:none!important}.course-lesson[hidden]{display:block!important}.course-layout{display:block}.course-lesson{break-inside:avoid;border:0;padding:0}.course-main{max-width:none}}