body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f0f2f5;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.comic-container {
    max-width: 800px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    overflow: hidden;
}

.comic-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    text-align: center;
}

.comic-header h1 {
    margin: 0;
    font-size: 2em;
}

.step {
    padding: 30px;
    border-bottom: 1px solid #eee;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.step:nth-child(2) { animation-delay: 0.2s; }
.step:nth-child(3) { animation-delay: 0.4s; }
.step:nth-child(4) { animation-delay: 0.6s; }
.step:nth-child(5) { animation-delay: 0.8s; }
.step:nth-child(6) { animation-delay: 1.0s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-number {
    display: inline-block;
    background: #667eea;
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    text-align: center;
    line-height: 30px;
    font-weight: bold;
    margin-right: 15px;
}

.step-title {
    font-size: 1.3em;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.step-content {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.step-text {
    flex: 1;
    color: #666;
    line-height: 1.6;
}

.step-icon {
    font-size: 3em;
    opacity: 0.8;
}

.highlight {
    background: #e8f5e8;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #28a745;
    margin-top: 15px;
}

/* Ensure prerequisite highlight under step content spans full width */
.step-content .highlight {
    flex-basis: 100%;
    width: 100%;
    order: 3;
}

.highlight strong {
    color: #2e7d32;
}

.play-button {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    font-size: 1.1em;
    cursor: pointer;
    margin: 20px auto;
    display: block;
    transition: all 0.3s ease;
}

.play-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.play-button:disabled {
    background: #6c757d;
    cursor: not-allowed;
}