/* Free lesson: shared Manrope, theme tokens, rules and alternating fields. */
.free-hero h1{max-width:900px}.free-intro{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}.free-intro figure{margin:0;max-width:360px}.free-intro img{display:block;width:100%;height:auto}.free-intro h2,.free-next h2{font-size:var(--fs-h3);letter-spacing:var(--tr-h3);line-height:1.15;margin:16px 0 24px}.free-meta{font-size:var(--fs-small);color:var(--muted);margin-top:20px}.free-reader{border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line);margin-top:32px}.free-reader summary{display:flex;justify-content:space-between;gap:16px;align-items:center;min-height:64px;padding:16px 0;font-size:var(--fs-lead);font-weight:600;cursor:pointer;list-style:none}.free-reader summary::after{content:'+';color:var(--accent-deep);font-size:var(--fs-h3)}.free-reader[open] summary::after{content:'−'}.free-reader summary span{font-size:var(--fs-small);color:var(--muted);margin-left:auto;font-weight:400}.free-reader-tools{display:flex;gap:12px;align-items:center;padding:20px 0;border-top:1px solid var(--line)}.free-reader-tools label{flex:1;min-width:0}.free-reader-tools select{width:100%;min-height:48px;background:var(--surface);color:var(--ink);font-family:var(--font);font-size:var(--fs-small);padding:10px;border:1px solid var(--line-strong);border-radius:var(--radius-sm)}.free-reader-tools .quiet{min-height:48px}.free-page{max-width:800px;padding:12px 0 32px}.free-page h3{font-size:var(--fs-h3);font-weight:600;letter-spacing:var(--tr-h3);line-height:1.2;margin-bottom:24px}.free-page p{margin:16px 0;overflow-wrap:anywhere}.free-lead{font-size:var(--fs-lead);color:var(--muted-strong)}.free-point{padding:12px 0;border-top:1px solid var(--line)}.free-focus{font-weight:600;padding-top:20px}.free-table{overflow:auto}.free-table table{width:100%;border-collapse:collapse;font-size:var(--fs-small);text-align:left}.free-table td,.free-table th{padding:12px 10px 12px 0;border-bottom:1px solid var(--line)}.free-video-intro{max-width:760px;margin-bottom:32px}.free-video-intro h2{font-size:var(--fs-h3);line-height:1.15;letter-spacing:var(--tr-h3);margin:16px 0 24px}.free-video-section video{width:100%;display:block;aspect-ratio:16/9;background:var(--ink-field)}.free-heading{display:grid;grid-template-columns:1fr 1fr;gap:52px}.free-heading h2{font-size:var(--fs-h3)}.free-next{display:grid;grid-template-columns:1.2fr 1fr;gap:52px;align-items:center}.free-next .actions{margin-top:16px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.free-reader :focus-visible{outline:2px solid var(--accent-deep);outline-offset:4px}
@media(max-width:760px){.free-intro,.free-heading,.free-next{grid-template-columns:1fr;gap:28px}.free-intro h2,.free-next h2{margin-top:12px}.free-reader summary{font-size:var(--fs-body);gap:10px}.free-reader summary span{font-size:var(--fs-micro)}.free-reader-tools{gap:8px;flex-wrap:wrap}.free-reader-tools label{order:-1;flex-basis:100%}.free-reader-tools .quiet{flex:1}.free-page h3{font-size:var(--fs-h3)}.free-video-intro{margin-bottom:24px}.free-next .actions{align-items:stretch;flex-direction:column}.free-next .actions button{text-align:center;justify-content:center}.free-table table{font-size:var(--fs-small)}}

/* Visual checklist: one lazily loaded original slide at a time. */
.checklist-intro{display:flex;align-items:center;justify-content:space-between;gap:32px}.checklist-intro>div{max-width:680px}.checklist-intro .button{flex-shrink:0}.checklist-slide{margin:0}.checklist-slide img{display:block;width:100%;height:auto}.checklist-slide a{display:block}.checklist-slide figcaption{font-size:var(--fs-small);color:var(--muted);margin-top:16px}.free-reader[data-reader="checklist"] .free-page{max-width:640px;margin:0 auto}.checklist-intro h2{margin-bottom:20px}.checklist-intro .button:focus-visible{outline:2px solid var(--accent-deep);outline-offset:4px}
@media(max-width:760px){.checklist-intro{align-items:flex-start;flex-direction:column;gap:20px}.checklist-intro .button{width:100%}}