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solid #edf2f7;padding:18px}.learn-video-wrap{position:relative;width:100%;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:10px;background:#000}.learn-video-wrap iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0}.learn-actions{margin-top:14px;display:flex;gap:10px;flex-wrap:wrap}.learn-article-body{line-height:1.8;font-size:15px;color:#111827}.learn-article-image-wrap{margin:12px 0}.learn-article-image-wrap img{max-width:100%;border-radius:8px}.learn-article-file-wrap{margin:10px 0}.learn-article-file-link{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;background:#fff7ed;border:1px solid #fed7aa;border-radius:8px;color:#c2410c;text-decoration:none;font-weight:500}.learn-article-file-link:hover{background:#ffedd5}.course-form-card{background:#fff;border:1px solid #e6ebf2;border-radius:14px;padding:20px;box-shadow:0 4px 14px rgba(15,23,42,.04)}.course-form-section-title{font-size:1.1rem;font-weight:700;color:#0f172a;margin-bottom:16px}.course-form-label{display:block;font-size:.875rem;font-weight:500;margin-bottom:6px;color:#374151}.course-form-textarea{width:100%;border:1px solid #dbe3ef;border-radius:10px;padding:12px;min-height:120px;background:#f8fafd;box-sizing:border-box}.course-form-textarea:focus{outline:none;background:#fff;border-color:#4267b2;box-shadow:0 0 0 3px rgba(66,103,178,.12)}.course-form-select{width:100%;height:40px;padding:0 12px;border:1px solid #dbe3ef;border-radius:10px;background:#f8fafd}.course-curriculum-editor{border:1px solid #e6ebf2;border-radius:12px;padding:16px;margin-bottom:16px;background:#fafbfc}.course-lecture-editor{border-top:1px dashed #e2e8f0;padding-top:12px;margin-top:12px}.course-form-remove-btn{width:32px;height:32px;border-radius:8px;border:1px solid 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