:root {
            --primary-gold: #FFD700;
            --secondary-orange: #FF8C00;
            --accent-red: #DC143C;
            --dark-bg: #1a1a1a;
            --text-light: #f8f9fa;
        }
        body {
            font-family: 'Segoe UI', system-ui, sans-serif;
            background: linear-gradient(135deg, #0c2461 0%, #1e3799 100%);
            color: var(--text-light);
            line-height: 1.7;
        }
        .logo-brand {
            font-family: 'Georgia', serif;
            font-weight: bold;
            font-size: 2.2rem;
            background: linear-gradient(45deg, var(--primary-gold), var(--secondary-orange));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .nav-custom {
            background: rgba(0, 0, 0, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 3px solid var(--primary-gold);
        }
        .nav-link {
            color: var(--text-light) !important;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary-gold) !important;
            transform: translateY(-2px);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-gold);
            transition: width 0.3s ease;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .hero-section {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://via.placeholder.com/1200x600') center/cover no-repeat;
            padding: 100px 0;
            text-align: center;
            margin-bottom: 50px;
        }
        .content-section {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 40px;
            margin-bottom: 30px;
            border: 1px solid rgba(255, 215, 0, 0.2);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }
        h1, h2, h3 {
            color: var(--primary-gold);
            margin-bottom: 1.5rem;
            font-weight: 700;
        }
        h1 {
            font-size: 3rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        h2 {
            font-size: 2.2rem;
            border-left: 5px solid var(--secondary-orange);
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary-orange);
        }
        .keyword-highlight {
            background: linear-gradient(120deg, transparent 0%, rgba(255, 215, 0, 0.2) 100%);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .feature-icon {
            font-size: 2rem;
            color: var(--primary-gold);
            margin-right: 15px;
            vertical-align: middle;
        }
        .image-container {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin: 30px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }
        .image-container img {
            transition: transform 0.5s ease;
            width: 100%;
        }
        .image-container:hover img {
            transform: scale(1.05);
        }
        .image-caption {
            background: rgba(0, 0, 0, 0.7);
            color: var(--text-light);
            padding: 10px 15px;
            font-style: italic;
        }
        .rule-box {
            background: rgba(255, 215, 0, 0.1);
            border-left: 4px solid var(--primary-gold);
            padding: 20px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .strategy-point {
            background: rgba(220, 20, 60, 0.1);
            border-left: 4px solid var(--accent-red);
            padding: 15px;
            margin: 15px 0;
            border-radius: 0 8px 8px 0;
        }
        footer {
            background: rgba(0, 0, 0, 0.9);
            padding: 40px 0 20px;
            margin-top: 50px;
            border-top: 3px solid var(--primary-gold);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--primary-gold);
            color: var(--dark-bg);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 4px 10px rgba(0,0,0,0.3);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top:hover {
            transform: translateY(-5px);
            color: var(--dark-bg);
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .content-section {
                padding: 25px;
            }
            .hero-section {
                padding: 60px 0;
            }
        }