:root {
    --accent-color: #2b6cb0;
    --border-color: #e2e8f0;
}

body {
    font-family: 'Times New Roman', serif;
    line-height: 1.6;
    color: #333;
    hyphens: auto;
}

.research-section {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.section-number {
    counter-increment: section;
    display: inline-block;
    margin-right: 0.5rem;
    font-weight: bold;
    color: var(--accent-color);
}

.section-number::before {
    content: counter(section) ". ";
}

.transition-note {
    color: var(--accent-color);
    font-style: italic;
    font-size: 0.9em;
    margin: 1.5rem 0;
    padding-left: 1rem;
    border-left: 3px solid var(--border-color);
}

.critical-quote {
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    padding: 1rem;
    margin: 1.5rem 0;
    position: relative;
}

.critical-quote::before {
    content: "⚡";
    position: absolute;
    left: -10px;
    top: -10px;
    background: white;
    padding: 2px;
}

@media (min-width: 768px) {
    body {
        font-size: 18px;
        padding-left: 260px;
    }

    #tocNav {
        width: 240px;
        left: 0;
        top: 0;
        height: 100vh;
        overflow-y: auto;
        border-right: 2px solid var(--border-color);
    }
}

@media (max-width: 767px) {
    #tocNav {
        width: 80%;
        top: 0;
        height: 100vh;
    }
}

.citation {
    font-size: 0.8em;
    color: #666;
    margin-top: -0.5rem;
}