* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary-green: #2E7D32;
            --primary-purple: #6A1B9A;
            --light-green: #4CAF50;
            --bg-primary: #F5F7FA;
            --text-primary: #2C3E50;
            --text-secondary: #5A6C7D;
            --text-muted: #95A5A6;
        }

        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #F5F7FA 0%, #E8EEF2 100%);
            color: var(--text-primary);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 2rem;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(circle at 20% 30%, rgba(46, 125, 50, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(106, 27, 154, 0.08) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        h1,
        h2 {
            font-family: 'Poppins', sans-serif;
        }

        main {
            max-width: 600px;
            width: 100%;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .error-number {
            font-size: clamp(120px, 20vw, 180px);
            font-weight: 900;
            line-height: 1;
            background: linear-gradient(135deg, var(--primary-green), var(--primary-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
            position: relative;
            text-shadow: 0 4px 20px rgba(46, 125, 50, 0.2);
        }

        .icon-overlay {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: clamp(3rem, 8vw, 5rem);
            color: var(--primary-green);
            opacity: 0.3;
        }

        .glass-card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(46, 125, 50, 0.1);
            border-radius: 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            padding: 2rem;
            margin-bottom: 2rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
            background: linear-gradient(135deg, var(--primary-green), var(--light-green));
            color: white;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(46, 125, 50, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 30px rgba(46, 125, 50, 0.4);
        }

        .btn-primary i {
            transition: transform 0.3s ease;
        }

        .btn-primary:hover i {
            transform: translateX(-4px);
        }

        footer {
            position: absolute;
            bottom: 1.5rem;
            color: var(--text-muted);
            font-size: 0.8125rem;
            z-index: 1;
        }

        @keyframes float {

            0%,
            100% {
                transform: translate(-50%, -50%) translateY(0px);
            }

            50% {
                transform: translate(-50%, -50%) translateY(-10px);
            }
        }

        .icon-overlay {
            animation: float 3s ease-in-out infinite;
        }