body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f5f7fb;
    color: #1a1a1a;
    margin: 0;
}

/* Layout */
.article-container {
    max-width: 820px;
    margin: 60px auto;
    padding: 30px;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

/* Header */
.article-header {
    background-color: #fffffb;
    padding-left: 20px;
}
.article-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
}

.subtitle {
    color: #666;
    margin-top: 10px;
}

/* Typography */
h2 {
    margin-top: 40px;
    font-size: 1.5rem;
    border-left: 4px solid #2563eb;
    padding-left: 12px;
}

h3 {
    margin-top: 20px;
}

p {
    line-height: 1.8;
    font-size: 1rem;
}

ul {
    padding-left: 20px;
}

/* Highlight blocks */
.highlight {
    background: #eef4ff;
    border-left: 4px solid #2563eb;
    padding: 16px;
    border-radius: 6px;
    margin: 20px 0;
}

.strategy {
    background: #f0fdf4;
    border-left: 4px solid #16a34a;
    padding: 16px;
    border-radius: 6px;
    margin: 20px 0;
}

/* Footer */
.article-footer {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.highlight-inline {
    background: #eef4ff;
    padding: 10px;
    border-radius: 6px;
}

/* Hover UX (은근 중요) */
.article-container:hover {
    transform: translateY(-2px);
    transition: 0.2s ease;
}