/* AI Teachers | Advanced Agentic OS course. Readable, responsive, editorial. */
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.os-course .os-bread{display:flex;align-items:center;gap:11px;padding:26px 0 0;font-size:.82rem;color:#77786f;flex-wrap:wrap}
.os-course .os-bread a{font-weight:650;color:#2d4066}.os-hero{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:clamp(25px,5vw,64px);align-items:center;padding:clamp(35px,6vw,75px) 0 50px}
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.os-hero .os-hero-lead{font-size:clamp(1rem,1.5vw,1.23rem);line-height:1.75;color:#485249;max-width:660px}
.os-secondary{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:12px 21px;border:1px solid #3154ce;border-radius:999px;color:#2445c7!important;text-decoration:none;font-size:.88rem;font-weight:800;background:#fff}
.os-secondary:hover{background:#edf1ff}.os-underlink{font-weight:750}
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.os-heading .os-step{font-size:.72rem;font-weight:800;letter-spacing:.1em;color:#4b59b3}
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.os-lesson-grid h3{font-size:1.13rem;margin:0 0 15px}
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.os-deliverable{background:#e9f2e6;border-radius:13px;padding:18px;margin:15px 0}
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