.lesson-interactive {
    border-top: 1px solid #dbe4ef;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
}

.lesson-learning-progress {
    align-items: center;
    background: linear-gradient(135deg, #eff6ff, #ecfeff);
    border: 1px solid #bfdbfe;
    border-radius: 12px;
    display: grid;
    gap: 0.75rem;
    grid-template-columns: minmax(190px, 0.7fr) 1fr;
    padding: 1rem;
}

.lesson-learning-progress strong,
.lesson-learning-progress .eyebrow {
    display: block;
}

.lesson-learning-progress-track {
    background: #dbeafe;
    border-radius: 999px;
    height: 12px;
    overflow: hidden;
}

.lesson-learning-progress-track span {
    background: linear-gradient(90deg, #1677ff, #14b8a6);
    display: block;
    height: 100%;
    transition: width 240ms ease;
    width: 0;
}

.lesson-learning-progress-sidebar {
    gap: 0.55rem;
    grid-template-columns: 1fr;
}
.lesson-learning-progress-sidebar strong { font-size: 0.86rem; }
.lesson-learning-progress-sidebar .lesson-learning-progress-track { height: 9px; }

.lesson-interactive .lesson-summary {
    background: #eef5ff;
    border-left: 4px solid #1677ff;
    border-radius: 0 10px 10px 0;
    color: #173b6c;
    font-size: 1.05rem;
    font-weight: 700;
    margin-top: 0;
    padding: 1rem 1.15rem;
}

.lesson-beginner-guide {
    background: #fff;
    border: 2px solid #bae6fd;
    border-radius: 12px;
    margin-top: 1.5rem;
    padding: 1.2rem;
}

.lesson-beginner-guide > p { font-size: 1.02rem; }
.lesson-beginner-guide dl { display: grid; gap: 0.6rem; margin: 1rem 0 0; }
.lesson-beginner-guide dl > div { background: #f0f9ff; border-radius: 8px; padding: 0.75rem; }
.lesson-beginner-guide dt { color: #075985; font-weight: 900; }
.lesson-beginner-guide dd { color: #334155; margin: 0.2rem 0 0; }

.lesson-visual {
    margin: 1.5rem 0 2rem;
}

.lesson-visual button {
    background: #0f172a;
    border: 0;
    border-radius: 12px;
    cursor: zoom-in;
    display: block;
    overflow: hidden;
    padding: 0;
    position: relative;
    width: 100%;
}

.lesson-visual img {
    aspect-ratio: 16 / 9;
    display: block;
    object-fit: cover;
    transition: opacity 180ms ease, transform 180ms ease;
    width: 100%;
}

.lesson-visual button:hover img {
    opacity: 0.86;
    transform: scale(1.01);
}

.lesson-visual button span {
    background: rgba(15, 23, 42, 0.82);
    border-radius: 999px;
    bottom: 12px;
    color: #fff;
    font-size: 0.82rem;
    font-weight: 800;
    padding: 0.5rem 0.8rem;
    position: absolute;
    right: 12px;
}

.lesson-visual figcaption {
    color: #64748b;
    font-size: 0.85rem;
    margin-top: 0.6rem;
}

.lesson-interactive .lesson-content-block {
    margin-top: 2rem;
}

.lesson-deep-dive {
    background: linear-gradient(145deg, #f8fafc, #eff6ff);
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    margin-top: 2rem;
    padding: 1.25rem;
}

.lesson-insight-grid {
    display: grid;
    gap: 0.8rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 1rem;
}

.lesson-insight-card {
    background: #fff;
    border: 1px solid #dbe4ef;
    border-radius: 10px;
    padding: 1rem;
}

.lesson-insight-card.is-key { border-top: 4px solid #1677ff; }
.lesson-insight-card.is-warning { border-top: 4px solid #f59e0b; }
.lesson-insight-card h3 { font-size: 1rem; margin-bottom: 0.65rem; }
.lesson-insight-card ul { margin: 0; padding-left: 1.2rem; }
.lesson-insight-card li { margin-bottom: 0.4rem; }

.lesson-workshop {
    background: #f0fdfa;
    border: 1px solid #5eead4;
    border-radius: 12px;
    margin-top: 2rem;
    padding: 1.25rem;
}

.lesson-workshop-steps {
    display: grid;
    gap: 0.7rem;
    list-style: none;
    margin: 1rem 0 0;
    padding: 0;
}

.lesson-workshop-steps li {
    align-items: flex-start;
    background: #fff;
    border: 1px solid #ccfbf1;
    border-radius: 9px;
    display: flex;
    gap: 0.75rem;
    padding: 0.8rem;
}

.lesson-workshop-steps li > span {
    align-items: center;
    background: #0f766e;
    border-radius: 50%;
    color: #fff;
    display: inline-flex;
    flex: 0 0 1.7rem;
    font-weight: 800;
    height: 1.7rem;
    justify-content: center;
}

.lesson-workshop-steps p { margin: 0; }
.lesson-workspace-layout {
    display: grid;
    gap: 0.6rem;
    grid-template-columns: 1fr;
    margin-top: 1rem;
}
.lesson-workspace-layout > div {
    background: #ccfbf1;
    border-radius: 8px;
    color: #115e59;
    font-size: 0.86rem;
    font-weight: 800;
    padding: 0.75rem;
}
.lesson-workspace-layout > .workspace-capture {
    background: transparent;
    color: inherit;
    grid-column: 1 / -1;
    padding: 0;
}
.vscode-capture {
    font-weight: 400;
    max-width: 100%;
}
.lesson-workshop-screenshots {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
    margin-top: 1.2rem;
}
.lesson-workshop-screenshots figure { margin: 0; }
.lesson-workshop-screenshots a {
    color: #0f766e;
    display: block;
    font-size: 0.78rem;
    font-weight: 800;
    text-align: center;
    text-decoration: none;
}
.lesson-workshop-screenshots img {
    background: #fff;
    border: 1px solid #99f6e4;
    border-radius: 10px;
    display: block;
    height: auto;
    width: 100%;
}
.lesson-workshop-screenshots a span { display: block; padding: 0.45rem 0 0; }
.lesson-workshop-screenshots a:hover img,
.lesson-workshop-screenshots a:focus img { border-color: #0f766e; box-shadow: 0 8px 20px rgba(15, 118, 110, 0.16); }
.lesson-workshop-screenshots figcaption { color: #475569; font-size: 0.82rem; margin-top: 0.45rem; }

.lesson-starter-prompt {
    background: linear-gradient(145deg, #eff6ff, #f8fafc);
    border: 2px solid #60a5fa;
    border-radius: 12px;
    margin-top: 1.5rem;
    padding: 1.25rem;
}
.lesson-starter-prompt textarea {
    background: #fff;
    border: 1px solid #94a3b8;
    border-radius: 9px;
    color: #0f172a;
    display: block;
    font-family: Consolas, "Courier New", monospace;
    line-height: 1.55;
    margin: 1rem 0 0.8rem;
    min-height: 3rem;
    overflow: hidden;
    padding: 1rem;
    resize: none;
    width: 100%;
}
.lesson-starter-prompt button {
    background: #1677ff;
    border: 0;
    border-radius: 8px;
    color: #fff;
    font-weight: 800;
    padding: 0.7rem 1rem;
}
.lesson-starter-prompt small { color: #475569; display: block; margin-top: 0.65rem; }

.lesson-prompt-lab {
    background: linear-gradient(145deg, #eff6ff, #f8fafc);
    border: 1px solid #93c5fd;
    border-radius: 12px;
    color: #1e293b;
    margin-top: 2rem;
    padding: 1.25rem;
}

.lesson-prompt-lab .eyebrow { color: #1d4ed8; }
.lesson-prompt-lab h2,
.lesson-prompt-lab h3 { color: #0f172a; }
.lesson-prompt-anatomy {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin: 1rem 0;
}
.lesson-prompt-anatomy span {
    background: #dbeafe;
    border: 1px solid #60a5fa;
    border-radius: 999px;
    color: #1e40af;
    font-size: 0.72rem;
    font-weight: 800;
    padding: 0.35rem 0.6rem;
    text-transform: uppercase;
}
.lesson-prompt-editor { display: grid; gap: 0.55rem; }
.lesson-prompt-editor textarea {
    background: #fff;
    border: 1px solid #94a3b8;
    border-radius: 9px;
    color: #0f172a;
    font-family: Consolas, "Courier New", monospace;
    font-size: 0.86rem;
    line-height: 1.6;
    min-height: 3rem;
    overflow: hidden;
    padding: 1rem;
    resize: none;
    width: 100%;
}
.lesson-prompt-editor textarea:focus { border-color: #22d3ee; box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.16); outline: 0; }
.lesson-prompt-actions { align-items: center; display: flex; gap: 0.8rem; margin-top: 0.8rem; }
.lesson-prompt-actions button {
    background: linear-gradient(90deg, #2563eb, #06b6d4);
    border: 0;
    border-radius: 8px;
    color: #fff;
    font-weight: 800;
    padding: 0.7rem 1rem;
}
.lesson-prompt-actions small { color: #475569; }
.lesson-prompt-explanation {
    display: grid;
    gap: 0.8rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 1rem;
}
.lesson-prompt-explanation > div {
    background: #fff;
    border: 1px solid #bfdbfe;
    border-radius: 9px;
    padding: 0.9rem;
}
.lesson-prompt-explanation h3 { font-size: 0.95rem; }
.lesson-prompt-explanation ul { margin-bottom: 0; padding-left: 1.1rem; }
.lesson-ai-warning {
    background: #fef3c7;
    border-radius: 8px;
    color: #78350f;
    margin: 1rem 0 0;
    padding: 0.8rem;
}

.lesson-notebook {
    background: #fffdf5;
    border: 1px solid #f4cf72;
    border-radius: 12px;
    margin-top: 2rem;
    padding: 1.25rem;
}

.lesson-notebook-header {
    align-items: flex-start;
    display: flex;
    gap: 1rem;
    justify-content: space-between;
}

.lesson-notebook-header p { color: #64748b; margin-bottom: 0; }
.lesson-notebook-header button,
.lesson-notebook-summary summary {
    cursor: pointer;
    font-weight: 800;
}

.lesson-notebook-header button {
    background: #0f172a;
    border: 0;
    border-radius: 8px;
    color: #fff;
    flex: 0 0 auto;
    padding: 0.65rem 0.85rem;
}

.lesson-notebook-fields {
    display: grid;
    gap: 0.9rem;
    margin-top: 1.1rem;
}

.lesson-notebook-field { display: grid; gap: 0.4rem; }
.lesson-notebook-field textarea {
    background: #fff;
    border: 1px solid #d6b65f;
    border-radius: 9px;
    color: #0f172a;
    line-height: 1.5;
    padding: 0.8rem;
    resize: vertical;
    width: 100%;
}
.lesson-notebook-field textarea:focus { border-color: #1677ff; box-shadow: 0 0 0 3px rgba(22, 119, 255, 0.14); outline: 0; }
.lesson-notebook-field small { color: #64748b; }
.lesson-notebook-field small.is-saving { color: #1d4ed8; }
.lesson-notebook-field small.is-saved { color: #15803d; }
.lesson-notebook-field small.is-error { color: #b91c1c; }

.lesson-notebook-summary {
    border-top: 1px solid #ead9a4;
    margin-top: 1.2rem;
    padding-top: 1rem;
}

.lesson-notebook-list {
    display: grid;
    gap: 0.7rem;
    margin-top: 0.9rem;
}

.lesson-notebook-list article {
    background: #fff;
    border: 1px solid #ead9a4;
    border-radius: 9px;
    padding: 0.85rem;
}

.lesson-notebook-list article span,
.lesson-notebook-list article strong { display: block; }
.lesson-notebook-list article span { color: #64748b; font-size: 0.75rem; font-weight: 800; text-transform: uppercase; }
.lesson-notebook-list article p { margin: 0.4rem 0 0; white-space: pre-wrap; }
.lesson-notebook-empty { color: #64748b; margin: 0.9rem 0 0; }

.lesson-interactive h2 {
    font-size: 1.35rem;
    margin-bottom: 0.85rem;
}

.lesson-action-list,
.lesson-quiz-choices {
    display: grid;
    gap: 0.65rem;
}

.lesson-action-list label,
.lesson-quiz-choices label,
.lesson-exercise-done {
    align-items: flex-start;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    gap: 0.7rem;
    padding: 0.8rem 0.9rem;
}

.lesson-action-list input,
.lesson-quiz-choices input,
.lesson-exercise-done input {
    accent-color: #1677ff;
    height: 1.1rem;
    margin-top: 0.15rem;
    width: 1.1rem;
}

.lesson-action-list label:has(input:checked) {
    background: #ecfdf5;
    border-color: #86efac;
    color: #166534;
}

.lesson-code-toolbar {
    align-items: center;
    color: #64748b;
    display: flex;
    font-size: 0.78rem;
    font-weight: 800;
    justify-content: space-between;
    letter-spacing: 0.04em;
    margin-top: 1rem;
    text-transform: uppercase;
}

.lesson-code-toolbar button {
    background: #dbeafe;
    border: 0;
    border-radius: 7px;
    color: #1d4ed8;
    font-weight: 800;
    padding: 0.45rem 0.7rem;
    text-transform: none;
}

.lesson-interactive .lesson-code {
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    color: #0f172a;
    font-size: 0.88rem;
    line-height: 1.6;
    overflow-x: auto;
    padding: 1.15rem;
    white-space: pre;
}

.lesson-interactive .lesson-exercise,
.lesson-quiz {
    border-radius: 12px;
    margin-top: 2rem;
    padding: 1.25rem;
}

.lesson-resources {
    border-top: 1px solid #e2e8f0;
    margin-top: 2rem;
    padding-top: 0.8rem;
}

.lesson-resources > summary {
    color: #64748b;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 800;
}

.lesson-resource-grid {
    display: grid;
    gap: 0.8rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 0.8rem;
}

.lesson-resource-card {
    background: #fff;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    color: #0f172a;
    display: flex;
    flex-direction: column;
    min-height: 0;
    padding: 0.75rem;
    text-decoration: none;
    transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.lesson-resource-card:hover {
    border-color: #60a5fa;
    box-shadow: 0 10px 24px rgba(30, 64, 175, 0.1);
    color: #0f172a;
    transform: translateY(-2px);
}

.lesson-resource-card.is-primary {
    background: #f8fafc;
    border-color: #cbd5e1;
    color: #0f172a;
    grid-column: auto;
    min-height: 0;
}

.lesson-resource-card.is-primary:hover { color: #0f172a; }
.lesson-resource-card > span { font-size: 0.72rem; font-weight: 900; letter-spacing: 0.06em; opacity: 0.78; text-transform: uppercase; }
.lesson-resource-card strong { font-size: 1.08rem; margin-top: 0.35rem; }
.lesson-resource-card small { line-height: 1.5; margin-top: 0.35rem; opacity: 0.8; }
.lesson-resource-card em { font-size: 0.82rem; font-style: normal; font-weight: 800; margin-top: auto; padding-top: 0.9rem; }

.lesson-sidebar-checklist { display: grid; gap: 0.55rem; }
.lesson-sidebar-checklist label {
    align-items: flex-start;
    color: #475569;
    cursor: pointer;
    display: flex;
    font-size: 0.86rem;
    gap: 0.5rem;
    line-height: 1.4;
}
.lesson-sidebar-checklist input { accent-color: #1677ff; margin-top: 0.15rem; }
.lesson-sidebar-checklist label:has(input:checked) { color: #15803d; text-decoration: line-through; }
.lesson-sidebar-goals hr { border-color: #dbe4ef; margin: 1rem 0; }
.sidebar-progress-line {
    align-items: baseline;
    display: flex;
    gap: 0.35rem;
    margin-top: 0.35rem;
    white-space: nowrap;
}
.sidebar-progress-line h2 { font-size: 1.15rem; line-height: 1.2; margin: 0; }
.sidebar-progress-line > span { color: #94a3b8; }
.sidebar-progress-line p { min-width: 0; }
.course-progress-summary {
    align-items: center;
    color: #64748b;
    display: flex;
    font-size: 0.72rem;
    justify-content: space-between;
    margin: 0.65rem 0 0.35rem;
}
.course-progress-summary strong { color: #1d4ed8; }
.sidebar-program-full {
    display: grid;
    gap: 0.65rem;
    padding: 0.15rem 0.1rem;
}
.sidebar-program-module {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 0.65rem;
}
.sidebar-program-module.current {
    background: linear-gradient(145deg, #f8fbff, #eff6ff);
    border-color: #93c5fd;
    box-shadow: 0 5px 14px rgba(37, 99, 235, 0.08);
}
.sidebar-program-module h3 { color: #0f172a; font-size: 0.88rem; line-height: 1.3; margin-bottom: 0.45rem; }
.sidebar-program-module h3 span {
    color: #64748b;
    display: block;
    font-size: 0.62rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    margin-bottom: 0.12rem;
    text-transform: uppercase;
}
.sidebar-program-module .sidebar-lessons { margin-bottom: 0; }
.sidebar-program-module .sidebar-lessons li.active {
    background: #dbeafe;
    border: 1px solid #bfdbfe;
    border-radius: 8px;
    font-weight: 800;
}
.sidebar-program-module .sidebar-lessons a {
    align-items: center;
    color: #2563eb;
    display: flex;
    gap: 0.45rem;
    padding: 0.35rem 0.4rem;
    text-decoration: none;
}
.sidebar-program-module .sidebar-lessons a:hover { color: #0f766e; }
.sidebar-program-module .sidebar-lessons a > span {
    align-items: center;
    background: #e8eef7;
    border-radius: 50%;
    color: #475569;
    display: inline-flex;
    flex: 0 0 1.35rem;
    font-size: 0.68rem;
    font-weight: 900;
    height: 1.35rem;
    justify-content: center;
}
.sidebar-program-module .sidebar-lessons li.active a > span { background: #2563eb; color: #fff; }

@media (min-width: 901px) {
    .lesson-sidebar { gap: 0.65rem; }
    .lesson-sidebar .sidebar-panel { padding: 0.85rem 1rem; }
    .lesson-sidebar .eyebrow { font-size: 0.68rem; }
    .lesson-sidebar .sidebar-panel > h2.h4 {
        font-size: 1.15rem;
        line-height: 1.2;
        margin-bottom: 0.65rem;
        margin-top: 0.35rem !important;
    }
    .lesson-sidebar .progress.my-3 {
        height: 0.65rem;
        margin-bottom: 0.65rem !important;
        margin-top: 0.55rem !important;
    }
    .lesson-sidebar .small { font-size: 0.78rem; }
    .lesson-sidebar-checklist { gap: 0.32rem; }
    .lesson-sidebar-checklist label {
        font-size: 0.78rem;
        gap: 0.42rem;
        line-height: 1.28;
    }
    .lesson-sidebar-checklist input { margin-top: 0.08rem; transform: scale(0.9); }
    .lesson-sidebar-goals hr { margin: 0.65rem 0; }
    .sidebar-program-full { gap: 0.55rem; }
    .sidebar-program-module { padding: 0.5rem; }
    .sidebar-program-module h3 { font-size: 0.78rem; margin-bottom: 0.3rem; }
    .sidebar-program-module h3 span { font-size: 0.6rem; }
    .sidebar-program-module .sidebar-lessons { gap: 0.12rem; margin-top: 0.25rem; }
    .sidebar-program-module .sidebar-lessons a {
        font-size: 0.78rem;
        line-height: 1.25;
        padding: 0.25rem 0.3rem;
    }
    .lesson-sidebar .resource-list { gap: 0.4rem; }
    .lesson-sidebar .resource-list-row { padding: 0.55rem 0.65rem; }
}

.lesson-interactive .lesson-exercise {
    background: #f0fdfa;
    border: 1px solid #99f6e4;
}

.lesson-exercise-done {
    background: #fff;
    margin-top: 1rem;
}

.lesson-quiz {
    background: #eff6ff;
    border: 1px solid #93c5fd;
}

.lesson-quiz-header {
    align-items: center;
    display: flex;
    gap: 1rem;
    justify-content: space-between;
}

.lesson-quiz-header strong {
    background: #dbeafe;
    border-radius: 999px;
    color: #1d4ed8;
    font-size: 0.82rem;
    padding: 0.5rem 0.75rem;
    white-space: nowrap;
}

.lesson-quiz-question {
    background: #fff;
    border: 1px solid #bfdbfe;
    border-radius: 10px;
    margin-top: 1rem;
    padding: 1rem;
}

.lesson-quiz-question h3 {
    align-items: flex-start;
    display: flex;
    font-size: 1rem;
    gap: 0.65rem;
    line-height: 1.45;
    margin-bottom: 0.8rem;
}

.lesson-quiz-question h3 > span {
    align-items: center;
    background: #1677ff;
    border-radius: 50%;
    color: #fff;
    display: inline-flex;
    flex: 0 0 1.65rem;
    height: 1.65rem;
    justify-content: center;
}

.lesson-quiz-submit {
    background: #1677ff;
    border: 0;
    border-radius: 8px;
    color: #fff;
    font-weight: 800;
    margin-top: 1rem;
    padding: 0.7rem 1rem;
}

.lesson-quiz-feedback {
    border-radius: 8px;
    font-weight: 700;
    margin: 1rem 0 0;
    padding: 0.8rem;
}

.lesson-quiz-feedback.is-correct { background: #dcfce7; color: #166534; }
.lesson-quiz-feedback.is-incorrect { background: #fee2e2; color: #991b1b; }
.lesson-quiz-feedback.is-warning { background: #fef3c7; color: #92400e; }

.lesson-visual-dialog {
    background: #fff;
    border: 0;
    border-radius: 14px;
    max-height: 92vh;
    max-width: min(1200px, 94vw);
    padding: 1rem;
}

.lesson-visual-dialog::backdrop { background: rgba(15, 23, 42, 0.82); }
.lesson-visual-dialog img { display: block; max-height: 76vh; max-width: 100%; }
.lesson-visual-dialog p { color: #475569; margin: 0.75rem 0 0; }
.lesson-visual-dialog button {
    background: #0f172a;
    border: 0;
    border-radius: 8px;
    color: #fff;
    float: right;
    font-weight: 800;
    margin-bottom: 0.7rem;
    padding: 0.55rem 0.85rem;
}

.lesson-code-placement {
    background: linear-gradient(145deg, #f8fbff, #eef6ff);
    border: 1px solid #bfdbfe;
    border-radius: 14px;
    margin: 1.5rem 0;
    padding: 1.35rem;
}

.lesson-code-placement-intro { color: #475569; max-width: 850px; }
.lesson-code-placement-list { display: grid; gap: 1.2rem; margin-top: 1rem; }
.lesson-code-placement-list article {
    background: #fff;
    border: 1px solid #dbeafe;
    border-radius: 12px;
    overflow: hidden;
}
.lesson-code-placement-copy { padding: 1rem 1.1rem; }
.lesson-code-placement-copy > span { color: #2563eb; font-size: .75rem; font-weight: 800; text-transform: uppercase; }
.lesson-code-placement-copy h3 { margin: .25rem 0 .6rem; }
.lesson-file-path { background: #eff6ff; border-left: 3px solid #2563eb; border-radius: 6px; padding: .7rem; }
.lesson-file-path code { color: #0f3d78; font-family: Consolas, monospace; overflow-wrap: anywhere; }
.lesson-code-placement-list a { color: #1d4ed8; display: block; font-size: .82rem; font-weight: 700; text-align: center; text-decoration: none; }
.lesson-code-placement-list img { border-top: 1px solid #dbeafe; display: block; height: auto; width: 100%; }
.lesson-code-placement-list a span { display: block; padding: .6rem; }
.lesson-code-placement-rule { background: #dcfce7; border-radius: 8px; color: #166534; margin: 1rem 0 0; padding: .8rem 1rem; }

@media (max-width: 700px) {
    .lesson-learning-progress { grid-template-columns: 1fr; }
    .lesson-interactive h2 { font-size: 1.2rem; }
    .lesson-interactive .lesson-code { font-size: 0.78rem; }
    .lesson-visual button span { bottom: 8px; right: 8px; }
    .lesson-resource-grid { grid-template-columns: 1fr; }
    .lesson-resource-card.is-primary { grid-column: auto; }
    .lesson-quiz-header { align-items: flex-start; flex-direction: column; }
    .lesson-insight-grid { grid-template-columns: 1fr; }
    .lesson-workspace-layout,
    .lesson-prompt-explanation { grid-template-columns: 1fr; }
    .lesson-prompt-actions { align-items: stretch; flex-direction: column; }
    .lesson-prompt-actions button { width: 100%; }
    .lesson-notebook-header { flex-direction: column; }
    .lesson-notebook-header button { width: 100%; }
    .lesson-workshop-screenshots { grid-template-columns: 1fr; }
}