/* === ARTICLE LAYOUT === */
.article-content {
    padding: 60px 0 80px;
}

.article-header {
    margin-bottom: 48px;
}

.article-header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.3;
    margin: 16px 0;
    letter-spacing: -0.01em;
}

.article-body {
    font-size: 1.05rem;
    line-height: 1.85;
}

.article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 48px 0 16px;
    padding-top: 8px;
}

.article-body h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 32px 0 12px;
}

.article-body p {
    margin-bottom: 20px;
    color: #d4d4d8;
}

.article-body ul, .article-body ol {
    margin: 16px 0 24px;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 8px;
    color: #d4d4d8;
}

.article-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 48px 0;
}

/* === CALLOUTS === */
.callout {
    background: rgba(109, 93, 245, 0.08);
    border-left: 3px solid var(--accent);
    padding: 16px 20px;
    margin: 24px 0;
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 0.95rem;
    line-height: 1.6;
    color: #c8c4f0;
}

.equation-box {
    background: #1a1a28;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin: 24px 0;
    font-size: 1rem;
    line-height: 1.7;
    text-align: center;
    color: #e4e4f0;
}

.equation-box strong {
    color: var(--accent);
    font-size: 1.1rem;
}

/* === FOOTER === */
.article-footer {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.95rem;
}

.article-footer p {
    margin-bottom: 8px;
}

/* === RESPONSIVE === */
@media (max-width: 640px) {
    .article-header h1 { font-size: 1.6rem; }
    .article-body { font-size: 1rem; }
}