:root {
    --primary-color: #0A2E36;
    --accent-color: #FFB81C;
    --text-color: #212529;
    --light-text-color: #6C757D;
    --bg-color: #FFFFFF;
    --gray-bg-color: #F8F9FA;
    --border-color: #DEE2E6;
}


* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Pretendard', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-color);
}
.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 20px; }
img { max-width: 100%; height: auto; display: block; }
main { padding: 80px 0; }


.site-header {
    width: 100%; padding: 15px 0; background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color);
    position: sticky; top: 0; z-index: 1000;
}
.site-header .container { display: flex; justify-content: space-between; align-items: center; }
.site-header .logo { font-size: 1.4rem; font-weight: 800; color: var(--primary-color); text-decoration: none; }
.cta-button {
    display: inline-block; background-color: var(--accent-color); color: var(--primary-color) !important;
    padding: 10px 22px; border-radius: 8px; text-decoration: none; font-weight: 700;
    transition: background-color 0.3s, transform 0.2s;
}
.cta-button:hover { background-color: #ffc74c; transform: translateY(-2px); }
.sticky-nav {
    position: sticky; top: 67px; z-index: 999; background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color); box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.sticky-nav .container { overflow-x: auto; -ms-overflow-style: none; scrollbar-width: none; cursor: grab; }
.sticky-nav .container::-webkit-scrollbar { display: none; }
.sticky-nav ul { display: flex; list-style: none; margin: 0; padding: 0; white-space: nowrap; }
.sticky-nav li a { display: block; padding: 15px 20px; text-decoration: none; color: var(--light-text-color); font-weight: 600; border-bottom: 3px solid transparent; transition: color 0.3s, border-color 0.3s; }
.sticky-nav li a:hover { color: var(--primary-color); }
.sticky-nav li a.active { color: var(--primary-color); border-bottom-color: var(--primary-color); }
.site-footer {
    background-color: #222222; color: #AAAAAA; padding: 60px 0;
    font-size: 0.9rem; text-align: center;
}
.site-footer p { margin-bottom: 5px; }


.layout-section .section-header {
    text-align: center;
    margin-bottom: 50px;
}
.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 15px;
}
.section-subtitle {
    font-size: 1.1rem;
    color: var(--light-text-color);
}
.layout-image-container {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 30px;
}


.legend-container {
    background-color: var(--gray-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
}
.legend-header {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid var(--border-color);
}
.total-units {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    white-space: nowrap;
}
.unit-types p {
    font-size: 0.9rem;
    color: var(--light-text-color);
    line-height: 1.6;
    margin: 0;
}
.legend-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px 30px;
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 500;
}
.legend-icon {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    display: inline-block;
}


@media (max-width: 768px) {
    main { padding: 60px 0; }
    .section-title { font-size: 2rem; }
    .legend-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
}