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/* Readable, progressively revealed on-ramp for first-time learners. */
.beginner-start>p,.learning-goals,.beginner-terms,.units-guide,.beginner-practice-intro{font-size:15px;line-height:1.8}.beginner-start>p{max-width:75ch}.learning-goals{padding-left:24px;margin:18px 0}.beginner-start h3{font-size:19px;margin:25px 0 16px}.beginner-terms{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:0}.beginner-terms>div{background:white;border:1px solid var(--line);border-radius:10px;padding:18px}.beginner-terms dt{font-weight:700;margin-bottom:6px}.beginner-terms dd{margin:0;color:var(--muted)}.units-guide{border-left:3px solid var(--teal);padding:2px 20px 16px;margin-top:25px;background:#eaf4ed}.units-guide p+p{margin-top:10px}.beginner-figure{padding:12px 10px!important}.beginner-figure svg{max-width:390px;max-height:none;margin:auto}.beginner-label{font:13px system-ui,sans-serif;fill:#18343d}.current-arrow{stroke:#087d72;stroke-width:2;fill:none}.current-label{fill:#087568;font-weight:650}.beginner-figure figcaption{font-size:13px;line-height:1.6;max-width:65ch;margin:8px auto}.optional-detail{border:1px solid var(--line);border-radius:10px;background:white;margin-top:24px;overflow:hidden}.optional-detail>summary{font-size:15px;font-weight:650;color:var(--teal);padding:18px;cursor:pointer;min-height:48px}.optional-detail>div{padding:0 20px 20px;font-size:14px;line-height:1.8}.optional-detail p+p{margin-top:14px}.optional-detail>.formula-box{margin:0 12px 12px;padding:20px}.walkthrough-step{border-left:3px solid #83b7a0;padding:0 0 10px 18px;margin:0 0 30px}.walkthrough-step h4{font-size:18px;line-height:1.4;margin:0 0 12px}.walkthrough-step>p{font-size:15px;line-height:1.8}.step-equation{background:#e9f4ed;border-radius:7px;padding:12px;margin-top:12px;overflow-wrap:anywhere;font-family:var(--mono)}.concept-checks{margin-top:32px}.concept-checks h3{font-size:20px;margin-bottom:20px}.concept-check{background:#edf5ef;border:1px solid #ccdfd3;border-radius:10px;padding:20px;margin-top:14px;font-size:15px}.concept-choices{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.concept-choices button{font-size:14px;text-align:left}.concept-choices button[aria-pressed=true]{border-color:var(--teal);box-shadow:0 0 0 1px var(--teal)}.concept-feedback{margin-top:14px}.concept-feedback:empty{display:none}.beginner-practice-intro{margin-bottom:20px}.practice-circuit{grid-column:1/-1}.practice-circuit h3{font-size:20px;margin-top:14px}.beginner-start~.lesson-section .concept,.beginner-start~.lesson-section .method-list li,.beginner-start~.lesson-section .solution li,.beginner-start~.lesson-section .circuit-description,.beginner-start~.lesson-section .example-goal,.beginner-start~.lesson-section .practice-prompt{font-size:15px}.lab-field select{width:100%;font-size:14px}.lab-field input:disabled{background:#e4eae5;color:#6d7b75}.beginner-start~.lesson-section .practice details{font-size:14px}
@media(max-width:900px){.beginner-terms{grid-template-columns:1fr}}
@media(max-width:400px){.beginner-figure{padding:5px 0!important}.walkthrough-step{padding-left:10px}.lab-fields{grid-template-columns:1fr}.concept-choices{display:grid}.examples-toolbar{flex-wrap:wrap}}
@media print{#print-course-content .beginner-figure{max-width:330px;margin:12pt auto}#print-course-content .beginner-terms{display:block}#print-course-content .beginner-terms>div{padding:8pt;margin:5pt 0}#print-course-content .beginner-terms dt{font-size:11pt}#print-course-content .beginner-terms dd{font-size:10pt}#print-course-content .walkthrough-step{break-inside:avoid-page}#print-course-content .print-example:has(.walkthrough){break-inside:auto}#print-course-content .beginner-start h2{page-break-before:auto}#print-course-content .concept-checks{break-inside:auto}}
.units-guide h3{font-size:19px;margin:18px 0 14px}
@media(max-width:400px){.beginner-label{font-size:18px}.beginner-start~.lesson-section .solution{padding:18px 12px}.walkthrough-step{border-left:0;padding-left:0}.beginner-figure figcaption{font-size:13px}.beginner-start~.lesson-section .example-top{padding-left:12px;padding-right:12px}}