:root {
            --primary-color: #dc3545;
            --secondary-color: #ffc107;
            --accent-color: #198754;
            --dark-color: #2c3e50;
            --light-color: #f8f9fa;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f5f7fa;
        }
        .logo-text {
            font-family: 'Georgia', serif;
            font-weight: bold;
            font-size: 2.2rem;
            color: var(--primary-color);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        .logo-subtext {
            font-size: 0.9rem;
            color: var(--dark-color);
            letter-spacing: 3px;
        }
        .nav-custom {
            background: linear-gradient(135deg, var(--dark-color) 0%, #34495e 100%);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .nav-link {
            color: white !important;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 10px 15px !important;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(44, 62, 80, 0.8), rgba(44, 62, 80, 0.9)), url('https://via.placeholder.com/1600x900') center/cover no-repeat;
            color: white;
            padding: 80px 0;
            margin-bottom: 40px;
        }
        .section-title {
            color: var(--dark-color);
            border-left: 5px solid var(--primary-color);
            padding-left: 15px;
            margin: 30px 0 20px;
        }
        .content-card {
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            padding: 25px;
            margin-bottom: 25px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-top: 4px solid var(--primary-color);
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
        }
        .highlight-box {
            background: linear-gradient(135deg, #fff9e6 0%, #fff0cc 100%);
            border-left: 4px solid var(--secondary-color);
            padding: 20px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .keyword-highlight {
            background-color: rgba(220, 53, 69, 0.1);
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
            color: var(--primary-color);
        }
        .rule-item {
            margin-bottom: 15px;
            padding-left: 25px;
            position: relative;
        }
        .rule-item:before {
            content: "•";
            color: var(--primary-color);
            font-weight: bold;
            position: absolute;
            left: 0;
            font-size: 1.5rem;
        }
        .strategy-card {
            background: white;
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 20px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
            border-left: 4px solid var(--accent-color);
        }
        .faq-item {
            margin-bottom: 15px;
        }
        .faq-question {
            font-weight: 600;
            color: var(--dark-color);
            cursor: pointer;
            padding: 12px 15px;
            background-color: #f1f5f9;
            border-radius: 5px;
            transition: all 0.3s ease;
        }
        .faq-question:hover {
            background-color: #e2e8f0;
        }
        .faq-answer {
            padding: 15px;
            background-color: white;
            border-radius: 0 0 5px 5px;
            border-left: 3px solid var(--accent-color);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .social-icon {
            display: inline-block;
            width: 40px;
            height: 40px;
            background-color: rgba(255,255,255,0.1);
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            margin-right: 10px;
            transition: all 0.3s ease;
        }
        .social-icon:hover {
            background-color: var(--primary-color);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .logo-text {
                font-size: 1.8rem;
            }
            .hero-section {
                padding: 50px 0;
            }
            .content-card {
                padding: 20px 15px;
            }
        }