.course-shell{padding-top:32px;padding-bottom:50px}.learn-hero{display:grid;grid-template-columns:1fr 1.08fr;align-items:center;gap:38px}.learn-hero h1{font-size:clamp(30px,4vw,50px);line-height:1.06;margin:12px 0 22px;letter-spacing:-1.3px}.learn-lead{font-size:18px;line-height:1.7}.learn-tag{font-weight:700;color:#a00018;margin:20px 0}.learn-hero .article-cover{padding:0;margin:0}.learn-scope{background:#fff8df;border-left:4px solid #f0bd18;padding:20px;margin:30px 0;font-size:15px;line-height:1.7}.learn-nav{display:flex;gap:12px;flex-wrap:wrap;margin:25px 0 45px}.learn-nav a{border:1px solid #dfe3e8;border-radius:30px;padding:10px 17px;font-weight:700}.learn-nav a:hover,.learn-nav a:focus-visible{border-color:#d90023;background:#fff0f2}.learn-syllabus ol{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.learn-syllabus li{display:flex;gap:13px;border:1px solid #e3e6eb;border-radius:14px;padding:21px;background:#fff}.learn-syllabus li:first-child{border-color:#d80021;background:#fff7f8}.learn-number{font-weight:800;font-size:24px;color:#c90021}.learn-syllabus h3{font-size:18px;margin:3px 0 10px}.learn-syllabus p{font-size:14px;line-height:1.65}.learn-syllabus a{font-weight:800;color:#ba0022}.learn-pending{display:block;color:#6c7380;font-size:12px;margin-top:15px}.learn-lesson,.learn-exercise,.learn-quiz,.learn-faq,.learn-commercial{margin-top:60px;scroll-margin-top:30px}.learn-lesson>.eyebrow,.learn-lesson>h2{max-width:860px;margin-left:auto;margin-right:auto}.learn-lesson .article-body{max-width:860px;padding:0;margin:24px auto}.learn-lesson .article-cover{padding:0}.learn-exercise,.learn-quiz,.learn-faq,.learn-commercial{max-width:860px;margin-left:auto;margin-right:auto}.learn-exercise{background:#f4f6f8;border-radius:16px;padding:30px}.learn-exercise p,.learn-exercise li,.learn-quiz>p{line-height:1.8}.learn-exercise li{margin:8px 0}.learn-question{padding:23px;margin:26px 0;border:1px solid #dfe3e8;border-radius:12px}.learn-question legend{font-weight:750;padding:0 8px;font-size:18px}.learn-question label{display:flex;align-items:flex-start;gap:10px;padding:13px 10px;margin:5px 0;line-height:1.5;border-radius:7px;background:#f7f8fa;cursor:pointer}.learn-question input{margin-top:5px;accent-color:#cb0021;flex-shrink:0}.learn-question label:focus-within{outline:2px solid #cb0021;outline-offset:2px}.learn-feedback{font-weight:800;margin-top:20px}.learn-explanation{line-height:1.7}.learn-muted{color:#626b79;font-size:14px}.learn-commercial{border-top:2px solid #e6e8eb;padding-top:30px}.learn-back{margin-top:45px}.course-shell a:focus-visible,.course-shell button:focus-visible{outline:3px solid #d90023;outline-offset:3px}.course-shell [id]{scroll-margin-top:30px}.course-shell [hidden]{display:none!important}@media(max-width:900px){.learn-syllabus ol{grid-template-columns:repeat(2,1fr)}.learn-hero{gap:22px}}@media(max-width:650px){.learn-hero{grid-template-columns:1fr}.learn-hero h1{font-size:34px}.learn-syllabus ol{grid-template-columns:1fr}.learn-exercise{padding:22px}.learn-question{padding:18px 10px}.learn-quiz .button{margin-bottom:10px}.learn-nav{gap:8px}.learn-nav a{font-size:13px;padding:9px 12px}.learn-hero .article-cover{margin-top:8px}.learn-scope{padding:16px}.course-shell{padding-top:20px}}
/* One relevant existing visual per guide, with full uncropped proportions. */
.learn-syllabus li:has(.learn-thumbnail){display:grid;grid-template-columns:42px minmax(0,1fr);padding:0 0 24px;overflow:hidden;align-content:start}.learn-thumbnail{display:block;grid-column:1/-1;width:100%;background:#f7f3ee;margin-bottom:20px}.learn-thumbnail img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:contain}.learn-syllabus li:has(.learn-thumbnail)>.learn-number{margin-left:18px;font-size:1.5rem}.learn-syllabus li:has(.learn-thumbnail)>div{padding:0 20px 0 14px}.learn-syllabus li:has(.learn-thumbnail) h3{margin-top:0}@media(max-width:600px){.learn-syllabus li:has(.learn-thumbnail){grid-template-columns:40px minmax(0,1fr)}.learn-syllabus li:has(.learn-thumbnail)>div{padding-right:18px}}
/* Quiz controls are isolated from the quotation form's global input rules. */
#mini-prueba{max-width:860px;padding:32px;background:#f6f7f9;border:1px solid #e4e7ec;border-radius:20px}
#mini-prueba>h2{font-size:clamp(24px,3vw,30px);line-height:1.2;margin:10px 0 14px;letter-spacing:-.5px}
#mini-prueba>.eyebrow{color:#b60020}
#mini-prueba>p{max-width:68ch;margin-bottom:10px}
#learn-quiz-form{margin-top:28px}
#learn-quiz-form .learn-question{min-width:0;margin:0 0 24px;padding:18px;background:#fff;border:1px solid #dfe3e8;border-radius:14px}
#learn-quiz-form .learn-question legend{max-width:100%;padding:0 6px;font-size:16px;line-height:1.5;color:#182230}
#learn-quiz-form .learn-question label{display:flex;align-items:flex-start;gap:12px;width:100%;box-sizing:border-box;padding:14px;margin:8px 0;border:1px solid #e6e8ed;border-radius:10px;background:#fafbfc;font-size:15px;font-weight:400;line-height:1.55;transition:border-color .15s,background-color .15s}
#learn-quiz-form .learn-question input[type="radio"]{position:static;display:block;appearance:auto;flex:0 0 20px;width:20px;height:20px;min-width:20px;min-height:20px;max-width:20px;max-height:20px;margin:2px 0 0;padding:0;accent-color:#c90021;box-shadow:none;border-radius:50%;cursor:pointer}
#learn-quiz-form .learn-question label>span{flex:1;min-width:0;overflow-wrap:break-word}
#learn-quiz-form .learn-question label:hover{border-color:#bbc2ce;background:#f3f5f8}
#learn-quiz-form .learn-question label:has(input:checked){border-color:#c90021;background:#fff2f4}
#learn-quiz-form .learn-question label:focus-within{outline:3px solid #2977d2;outline-offset:2px}
#learn-quiz-form .learn-feedback{font-size:15px;margin:16px 0 6px;color:#182230}
#learn-quiz-form .learn-explanation{font-size:14px;color:#485466;margin:0;padding:12px 14px;border-left:3px solid #c90021;background:#f6f7f9;border-radius:0 8px 8px 0}
#learn-quiz-form .learn-quiz-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px}
#learn-quiz-form .learn-quiz-actions .button{font-size:14px;margin:0;min-height:46px}
#learn-quiz-form button[type="reset"]{background:#fff;border:1px solid #ccd2db;color:#344054}
#learn-quiz-result:not(:empty){padding:16px;border-radius:10px;background:#fff3cc;font-size:15px;line-height:1.6;margin:20px 0 0}
@media(max-width:650px){#mini-prueba{padding:20px 14px;border-radius:14px}#learn-quiz-form .learn-question{padding:12px}#learn-quiz-form .learn-question legend{font-size:15px}#learn-quiz-form .learn-question label{padding:12px 10px;font-size:15px;gap:10px}#learn-quiz-form .learn-quiz-actions{align-items:stretch;flex-direction:column}#learn-quiz-form .learn-quiz-actions .button{width:100%;justify-content:center}}