:root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --secondary: #f59e0b;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
            --info: #06b6d4;
            --dark: #0f172a;
            --dark-light: #1e293b;
            --text: #e2e8f0;
            --text-muted: #94a3b8;
            --border: #334155;
            --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            --gradient-strategy: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
            --gradient-gold: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
            --shadow-glow: 0 0 50px rgba(99, 102, 241, 0.5);
        }
        
        /* Reset & Base */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            background: var(--dark);
            color: var(--text);
            overflow-x: hidden;
            line-height: 1.6;
        }
        
        /* Animated Background */
        .bg-animation {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 1;
            overflow: hidden;
        }
        
        /* Mathematical Pattern Background */
        .math-pattern {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0.03;
            pointer-events: none;
            z-index: 1;
            background-image: 
                repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(99, 102, 241, 0.5) 35px, rgba(99, 102, 241, 0.5) 70px),
                repeating-linear-gradient(-45deg, transparent, transparent 35px, rgba(245, 158, 11, 0.5) 35px, rgba(245, 158, 11, 0.5) 70px);
        }
        
        /* Floating Formulas */
        .float-formula {
            position: fixed;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.875rem;
            opacity: 0.1;
            pointer-events: none;
            z-index: 1;
            color: var(--primary);
        }
        
        .float-formula:nth-child(1) {
            top: 15%;
            left: 10%;
            animation: floatFormula 25s infinite ease-in-out;
        }
        
        .float-formula:nth-child(2) {
            top: 60%;
            right: 15%;
            animation: floatFormula 30s infinite ease-in-out reverse;
        }
        
        .float-formula:nth-child(3) {
            bottom: 20%;
            left: 50%;
            animation: floatFormula 35s infinite ease-in-out;
        }
        
        @keyframes floatFormula {
            0%, 100% { transform: translate(0, 0) rotate(0deg); }
            25% { transform: translate(30px, -30px) rotate(5deg); }
            50% { transform: translate(-20px, 20px) rotate(-5deg); }
            75% { transform: translate(20px, 10px) rotate(3deg); }
        }
        
        /* Container */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 2;
        }
        
        /* Header */
        header {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: all 0.3s ease;
        }
        
        header.scrolled {
            background: rgba(15, 23, 42, 0.95);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            height: 80px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--text);
            font-size: 1.5rem;
            font-weight: 800;
            transition: transform 0.3s ease;
        }
        
        .logo:hover {
            transform: scale(1.05);
        }
        
        .logo-icon {
            width: 45px;
            height: 45px;
            background: var(--gradient-1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
            align-items: center;
        }
        
        .nav-item {
            position: relative;
        }
        
        .nav-link {
            color: var(--text-muted);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .nav-link:hover,
        .nav-link.active {
            color: var(--primary);
        }
        
        /* Dropdown */
        .dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            background: var(--dark-light);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 0.5rem;
            min-width: 200px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.3s ease;
            margin-top: 10px;
        }
        
        .nav-item:hover .dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .dropdown-link {
            display: block;
            padding: 0.75rem 1rem;
            color: var(--text-muted);
            text-decoration: none;
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        
        .dropdown-link:hover,
        .dropdown-link.active {
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary);
            transform: translateX(5px);
        }
        
        /* Buttons */
        .nav-buttons {
            display: flex;
            gap: 1rem;
        }
        
        .btn {
            padding: 0.75rem 1.5rem;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        
        .btn-outline:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
        }
        
        .btn-primary {
            background: var(--gradient-1);
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .btn-primary::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.2);
            transition: left 0.5s ease;
        }
        
        .btn-primary:hover::before {
            left: 100%;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
        }
        
        /* Mobile Menu */
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px;
        }
        
        .mobile-menu-btn span {
            width: 25px;
            height: 3px;
            background: var(--text);
            border-radius: 3px;
            transition: all 0.3s ease;
        }
        
        /* Breadcrumb */
        .breadcrumb {
            padding: 100px 0 20px;
            background: var(--dark-light);
            border-bottom: 1px solid var(--border);
        }
        
        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 15px;
            flex-wrap: wrap;
        }
        
        .breadcrumb-item {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .breadcrumb-item:hover {
            color: var(--primary);
        }
        
        .breadcrumb-item:last-child {
            color: var(--primary);
            pointer-events: none;
        }
        
        .breadcrumb-separator {
            color: var(--text-muted);
            opacity: 0.5;
        }
        
        /* Hero Section */
        .hero-section {
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(116, 75, 162, 0.1) 50%, rgba(240, 147, 251, 0.1) 100%);
            position: relative;
            overflow: hidden;
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
            animation: rotate 30s linear infinite;
        }
        
        @keyframes rotate {
            to { transform: rotate(360deg); }
        }
        
        .hero-content {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        
        .hero-content h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 900;
            margin-bottom: 1.5rem;
            background: var(--gradient-strategy);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            animation: fadeInUp 0.8s ease;
        }
        
        .hero-content .subtitle {
            font-size: 1.5rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
            animation: fadeInUp 0.8s ease 0.2s both;
        }
        
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 3rem;
            flex-wrap: wrap;
            margin-top: 3rem;
            animation: fadeInUp 0.8s ease 0.4s both;
        }
        
        .hero-stat {
            text-align: center;
        }
        
        .hero-stat-value {
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--gradient-1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .hero-stat-label {
            color: var(--text-muted);
            font-size: 0.875rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* Main Content */
        .main-content {
            padding: 60px 0;
        }
        
        /* Strategy Categories */
        .strategy-categories {
            margin-bottom: 5rem;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        
        .section-header h2 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 1rem;
            background: var(--gradient-1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .section-header p {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto;
        }
        
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        
        .category-card {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 2rem;
            text-align: center;
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        
        .category-card:hover {
            transform: translateY(-10px);
            border-color: var(--primary);
            box-shadow: 0 20px 40px rgba(99, 102, 241, 0.2);
        }
        
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-1);
            transform: translateX(-100%);
            transition: transform 0.3s ease;
        }
        
        .category-card:hover::before {
            transform: translateX(0);
        }
        
        .category-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }
        
        .category-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text);
        }
        
        .category-description {
            color: var(--text-muted);
            line-height: 1.6;
        }
        
        .category-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            margin-top: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: gap 0.3s ease;
        }
        
        .category-link:hover {
            gap: 10px;
        }
        
        /* Strategy Cards */
        .strategy-section {
            margin-bottom: 5rem;
        }
        
        .strategy-card {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 3rem;
            margin-bottom: 3rem;
            position: relative;
            overflow: hidden;
        }
        
        .strategy-header {
            display: flex;
            justify-content: space-between;
            align-items: start;
            margin-bottom: 2rem;
            flex-wrap: wrap;
            gap: 1rem;
        }
        
        .strategy-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
        }
        
        .risk-level {
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.875rem;
        }
        
        .risk-low {
            background: rgba(16, 185, 129, 0.2);
            color: var(--success);
        }
        
        .risk-medium {
            background: rgba(245, 158, 11, 0.2);
            color: var(--warning);
        }
        
        .risk-high {
            background: rgba(239, 68, 68, 0.2);
            color: var(--danger);
        }
        
        .strategy-content h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin: 2rem 0 1rem;
            color: var(--primary);
        }
        
        .strategy-content h4 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 1.5rem 0 1rem;
            color: var(--text);
        }
        
        .strategy-content p {
            margin-bottom: 1.5rem;
            color: var(--text);
            opacity: 0.9;
            line-height: 1.8;
        }
        
        .strategy-content ul,
        .strategy-content ol {
            margin: 1.5rem 0;
            padding-left: 2rem;
        }
        
        .strategy-content li {
            margin-bottom: 0.75rem;
            color: var(--text);
            opacity: 0.9;
            line-height: 1.6;
        }
        
        /* Formula Box */
        .formula-box {
            background: rgba(99, 102, 241, 0.1);
            border: 1px solid rgba(99, 102, 241, 0.3);
            border-radius: 16px;
            padding: 2rem;
            margin: 2rem 0;
            font-family: 'JetBrains Mono', monospace;
            overflow-x: auto;
        }
        
        .formula-title {
            font-size: 0.875rem;
            color: var(--primary);
            margin-bottom: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .formula {
            font-size: 1.25rem;
            color: var(--text);
            white-space: nowrap;
        }
        
        /* Example Table */
        .example-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            overflow: hidden;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.02);
        }
        
        .example-table th {
            background: var(--gradient-1);
            color: white;
            padding: 1rem;
            text-align: left;
            font-weight: 600;
        }
        
        .example-table td {
            padding: 1rem;
            border-bottom: 1px solid var(--border);
        }
        
        .example-table tr:hover {
            background: rgba(99, 102, 241, 0.05);
        }
        
        .table-win {
            color: var(--success);
            font-weight: 600;
        }
        
        .table-loss {
            color: var(--danger);
            font-weight: 600;
        }
        
        /* Pros and Cons */
        .pros-cons {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2rem 0;
        }
        
        .pros-box,
        .cons-box {
            border-radius: 16px;
            padding: 2rem;
        }
        
        .pros-box {
            background: rgba(16, 185, 129, 0.1);
            border: 1px solid rgba(16, 185, 129, 0.3);
        }
        
        .cons-box {
            background: rgba(239, 68, 68, 0.1);
            border: 1px solid rgba(239, 68, 68, 0.3);
        }
        
        .pros-box h4 {
            color: var(--success);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .cons-box h4 {
            color: var(--danger);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .pros-box ul,
        .cons-box ul {
            list-style: none;
            padding: 0;
        }
        
        .pros-box li,
        .cons-box li {
            margin-bottom: 0.5rem;
            padding-left: 1.5rem;
            position: relative;
        }
        
        .pros-box li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success);
            font-weight: 600;
        }
        
        .cons-box li::before {
            content: '✗';
            position: absolute;
            left: 0;
            color: var(--danger);
            font-weight: 600;
        }
        
        /* Calculator Section */
        .calculator-section {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 3rem;
            margin: 3rem 0;
        }
        
        .calculator-header {
            text-align: center;
            margin-bottom: 2rem;
        }
        
        .calculator-header h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            background: var(--gradient-1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .calculator-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        
        .calc-input {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        
        .calc-input label {
            font-weight: 600;
            color: var(--text);
        }
        
        .calc-input input {
            padding: 0.75rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: 8px;
            color: var(--text);
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        
        .calc-input input:focus {
            outline: none;
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.08);
        }
        
        .calc-button {
            background: var(--gradient-1);
            color: white;
            padding: 1rem 2rem;
            border: none;
            border-radius: 12px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 100%;
            font-size: 1rem;
        }
        
        .calc-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
        }
        
        .calc-result {
            background: rgba(99, 102, 241, 0.1);
            border: 1px solid rgba(99, 102, 241, 0.3);
            border-radius: 12px;
            padding: 2rem;
            text-align: center;
            display: none;
        }
        
        .calc-result.active {
            display: block;
        }
        
        .calc-result-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }
        
        .calc-result-label {
            color: var(--text-muted);
        }
        
        /* Tips Section */
        .tips-section {
            background: var(--gradient-1);
            border-radius: 30px;
            padding: 4rem;
            margin: 3rem 0;
            position: relative;
            overflow: hidden;
        }
        
        .tips-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
            animation: rotate 30s linear infinite;
        }
        
        .tips-content {
            position: relative;
            z-index: 2;
            color: white;
        }
        
        .tips-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 2rem;
            text-align: center;
        }
        
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        
        .tip-item {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 16px;
            padding: 2rem;
            transition: all 0.3s ease;
        }
        
        .tip-item:hover {
            transform: translateY(-5px);
            background: rgba(255, 255, 255, 0.15);
        }
        
        .tip-number {
            width: 40px;
            height: 40px;
            background: white;
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        
        .tip-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        
        .tip-description {
            opacity: 0.9;
            line-height: 1.6;
        }
        
        /* Info Boxes */
        .info-box {
            background: rgba(99, 102, 241, 0.1);
            border: 1px solid rgba(99, 102, 241, 0.3);
            border-radius: 16px;
            padding: 1.5rem;
            margin: 2rem 0;
            position: relative;
            overflow: hidden;
        }
        
        .info-box::before {
            content: '💡';
            position: absolute;
            top: 1.5rem;
            left: 1.5rem;
            font-size: 1.5rem;
        }
        
        .info-box-content {
            padding-left: 3rem;
        }
        
        .warning-box {
            background: rgba(239, 68, 68, 0.1);
            border: 1px solid rgba(239, 68, 68, 0.3);
            border-radius: 16px;
            padding: 1.5rem;
            margin: 2rem 0;
            position: relative;
            overflow: hidden;
        }
        
        .warning-box::before {
            content: '⚠️';
            position: absolute;
            top: 1.5rem;
            left: 1.5rem;
            font-size: 1.5rem;
        }
        
        .warning-box-content {
            padding-left: 3rem;
        }
        
        /* SEO Content */
        .seo-section {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 4rem;
            margin-top: 5rem;
        }
        
        .seo-content h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--text);
            position: relative;
            padding-left: 20px;
        }
        
        .seo-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 100%;
            background: var(--gradient-1);
            border-radius: 2px;
        }
        
        /* FAQ Section */
        .faq-section {
            margin: 5rem 0;
        }
        
        .faq-grid {
            display: grid;
            gap: 1rem;
            margin-top: 2rem;
        }
        
        .faq-item {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        
        .faq-item:hover {
            border-color: var(--primary);
        }
        
        .faq-question {
            padding: 1.5rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.3s ease;
        }
        
        .faq-question:hover {
            background: rgba(99, 102, 241, 0.05);
        }
        
        .faq-question h4 {
            margin: 0;
            font-size: 1.1rem;
            color: var(--text);
            flex: 1;
        }
        
        .faq-icon {
            transition: transform 0.3s ease;
            color: var(--primary);
        }
        
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        
        .faq-answer {
            padding: 0 1.5rem;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        
        .faq-item.active .faq-answer {
            padding: 0 1.5rem 1.5rem;
            max-height: 500px;
        }
        
        /* Footer */
        footer {
            background: var(--dark-light);
            padding: 60px 0 30px;
            border-top: 1px solid var(--border);
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        
        .footer-brand h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .footer-brand p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }
        
        .footer-column h4 {
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
            color: var(--text);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        
        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
        }
        
        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(5px);
        }
        
        .social-links {
            display: flex;
            gap: 1rem;
        }
        
        .social-link {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .social-link:hover {
            background: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
        }
        
        .footer-bottom {
            padding-top: 2rem;
            border-top: 1px solid var(--border);
            text-align: center;
            color: var(--text-muted);
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .categories-grid {
                grid-template-columns: 1fr 1fr;
            }
            
            .pros-cons {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                grid-template-columns: 1fr 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 80px);
                background: var(--dark);
                flex-direction: column;
                padding: 2rem;
                transition: left 0.3s ease;
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-item {
                width: 100%;
            }
            
            .nav-link {
                display: block;
                padding: 1rem;
                font-size: 1.1rem;
            }
            
            .dropdown {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                margin-top: 0;
                display: none;
            }
            
            .nav-item.active .dropdown {
                display: block;
            }
            
            .nav-buttons {
                width: 100%;
                flex-direction: column;
            }
            
            .btn {
                width: 100%;
                justify-content: center;
            }
            
            .mobile-menu-btn {
                display: flex;
            }
            
            .mobile-menu-btn.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            
            .mobile-menu-btn.active span:nth-child(2) {
                opacity: 0;
            }
            
            .mobile-menu-btn.active span:nth-child(3) {
                transform: rotate(-45deg) translate(7px, -6px);
            }
            
            .hero-stats {
                gap: 1.5rem;
            }
            
            .categories-grid {
                grid-template-columns: 1fr;
            }
            
            .strategy-card {
                padding: 2rem;
            }
            
            .calculator-section {
                padding: 2rem;
            }
            
            .tips-section {
                padding: 2rem;
            }
            
            .tips-grid {
                grid-template-columns: 1fr;
            }
            
            .example-table {
                font-size: 0.875rem;
            }
            
            .formula {
                font-size: 1rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            
            .social-links {
                justify-content: center;
            }
        }