* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Noto Sans KR', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 2rem 0;
            text-align: center;
        }
        
        h1 {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
        }
        
        .subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
        }
        
        /* 고정 목차 스타일 */
        .toc {
            position: fixed;
            top: 20px;
            right: 20px;
            width: 280px;
            max-height: 80vh;
            overflow-y: auto;
            background: white;
            border: 1px solid #ddd;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            z-index: 1000;
            font-size: 0.9rem;
        }
        
        .toc h3 {
            color: #667eea;
            font-size: 1.1rem;
            margin-bottom: 15px;
            border-bottom: 2px solid #667eea;
            padding-bottom: 5px;
        }
        
        .toc ul {
            list-style: none;
        }
        
        .toc li {
            margin: 8px 0;
        }
        
        .toc a {
            text-decoration: none;
            color: #333;
            display: block;
            padding: 5px 10px;
            border-radius: 5px;
            transition: all 0.3s;
        }
        
        .toc a:hover {
            background: #667eea;
            color: white;
        }
        
        .toc a.active {
            background: #764ba2;
            color: white;
            font-weight: bold;
        }
        
        nav {
            background: #fff;
            padding: 1rem 0;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        
        nav ul {
            list-style: none;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        nav li {
            margin: 0 1rem;
        }
        
        nav a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: background 0.3s;
        }
        
        nav a:hover {
            background: #667eea;
            color: white;
        }
        
        main {
            padding: 2rem 0;
            margin-right: 320px; /* 고정 목차 공간 확보 */
        }
        
        section {
            background: white;
            margin: 2rem 0;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        h2 {
            color: #667eea;
            font-size: 2rem;
            margin-bottom: 1rem;
            border-bottom: 3px solid #667eea;
            padding-bottom: 0.5rem;
        }
        
        h3 {
            color: #764ba2;
            font-size: 1.5rem;
            margin: 1.5rem 0 1rem 0;
        }
        
        h4 {
            color: #555;
            font-size: 1.2rem;
            margin: 1rem 0 0.5rem 0;
        }
        
        .highlight-box {
            background: linear-gradient(135deg, #ffeaa7, #fab1a0);
            padding: 1.5rem;
            border-radius: 10px;
            margin: 1rem 0;
            border-left: 5px solid #e17055;
        }
        
        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 2rem 0;
        }
        
        .info-card {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 4px solid #667eea;
            padding-left: 1.5rem;
        }
        
        .warning {
            background: #ffe6e6;
            border-left: 4px solid #e74c3c;
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 5px;
            
            padding-left: 2rem;
        }
        
        .success {
            background: #e8f5e8;
            border-left: 4px solid #27ae60;
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 5px;
            padding-left: 2rem;
        }
        
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1rem 0;
        }
        
        th, td {
            border: 1px solid #ddd;
            padding: 12px;
            text-align: left;
        }
        
        th {
            background: #667eea;
            color: white;
        }
        
        tr:nth-child(even) {
            background: #f9f9f9;
        }
        
        .faq-item {
            border: 1px solid #ddd;
            margin: 0.5rem 0;
            border-radius: 5px;
        }
        
        .faq-question {
            background: #f8f9fa;
            padding: 1rem;
            cursor: pointer;
            font-weight: bold;
            position: relative;
        }
        
        .faq-question:after {
            content: '+';
            position: absolute;
            right: 1rem;
            font-size: 1.5rem;
        }
        
        .faq-question.active:after {
            content: '-';
        }
        
        .faq-answer {
            padding: 1rem;
            display: none;
        }
        
        .faq-answer.active {
            display: block;
        }
        
        footer {
            background: #333;
            color: white;
            text-align: center;
            padding: 2rem 0;
            margin-top: 3rem;
        }
        
        .breadcrumb {
            background: #e9ecef;
            padding: 0.5rem 0;
            font-size: 0.9rem;
        }
        
        .breadcrumb a {
            color: #667eea;
            text-decoration: none;
        }
        
        /* 반응형 디자인 */
        @media (max-width: 1024px) {
            .toc {
                position: relative;
                width: 100%;
                margin-bottom: 20px;
                right: auto;
                top: auto;
                max-height: none;
            }
            
            main {
                margin-right: 0;
            }
        }
        
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            
            nav ul {
                flex-direction: column;
                align-items: center;
            }
            
            .info-grid {
                grid-template-columns: 1fr;
            }
            
            section {
                padding: 1rem;
            padding-left: 1.4rem;
            }
        }