body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 20px;
            background-color: #f5f5f5;
        }
        
        #main-nav {
            background-color: #333;
            padding: 10px 0;
            margin-bottom: 20px;
            border-radius: 5px;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }
        
        #main-nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }
        
        #main-nav li {
            margin: 0 10px;
        }
        
        #main-nav a {
            color: white;
            text-decoration: none;
            padding: 5px 10px;
            border-radius: 3px;
            transition: background-color 0.3s;
        }
        
        #main-nav a:hover {
            background-color: #555;
        }
        
        h1 {
            color: #333;
            text-align: center;
            background-color: #fff;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        
        h2 {
            color: #444;
            border-bottom: 2px solid #007acc;
            padding-bottom: 10px;
            margin-top: 30px;
        }
        
        .section {
            background-color: white;
            padding: 20px;
            margin: 20px 0;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        
        .feature {
            background-color: #e8f4f8;
            padding: 15px;
            border-left: 4px solid #007acc;
            margin: 15px 0;
        }
        
        .tips {
            background-color: #f0f8ff;
            border: 1px solid #b0d4f1;
            border-radius: 5px;
            padding: 15px;
            margin: 15px 0;
        }
        
        .warning {
            background-color: #fff3cd;
            border: 1px solid #ffeaa7;
            border-radius: 5px;
            padding: 15px;
            color: #856404;
        }
        
        .highlight {
            background-color: #ffeb3b;
            padding: 2px 4px;
            font-weight: bold;
        }
        
        .right-click-emphasis {
            background-color: #ff9800;
            color: white;
            padding: 2px 6px;
            border-radius: 3px;
            font-weight: bold;
        }
        
        /* 編集モード強調のためのスタイル */
        .edit-mode-section {
            background: linear-gradient(135deg, #ff6b6b, #4ecdc4);
            color: white;
            font-size: 1.3em;
            font-weight: bold;
            text-align: center;
            padding: 25px;
            margin: 25px 0;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            border: 3px solid #fff;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        
        .edit-mode-content {
            background-color: #f8f9fa;
            border: 3px solid #ff6b6b;
            border-radius: 10px;
            padding: 20px;
            margin: 20px 0;
            box-shadow: 0 3px 10px rgba(255,107,107,0.3);
        }
        
        .edit-mode-content ul {
            font-size: 1.1em;
            line-height: 1.8;
        }
        
        .edit-mode-content li {
            margin: 10px 0;
            padding: 5px;
            background-color: #fff;
            border-radius: 5px;
            border-left: 4px solid #ff6b6b;
        }
        
        code {
            background-color: #f4f4f4;
            padding: 2px 6px;
            border-radius: 3px;
            font-family: 'Courier New', monospace;
        }
        
        img {
            max-width: 100%;
            height: auto;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.2);
            margin: 10px 0;
        }
        
        .footer {
            text-align: center;
            margin-top: 40px;
            padding: 20px;
            background-color: #333;
            color: white;
            border-radius: 10px;
        }
        
        .footer a {
            color: #4ecdc4;
        }
        
        /* スクロール時にナビゲーションバーに隠れないよう調整 */
        h1, h2 {
            scroll-margin-top: 80px;
        }