:root {
            --primary: #002e5d;
            --accent: #0073e6;
            --bg: #f4f4f4;
            --text: #333;
            --header-bg: #e4e4e4;
            --footer-bg: #002e5d;
        }

        @media (prefers-color-scheme: dark) {
            :root {
                --bg: #121212;
                --text: #e0e0e0;
                --header-bg: #1f1f1f;
                --footer-bg: #1f1f1f;
            }
        }

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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.6;
        }

        header {
            background-color: var(--header-bg);
            padding: 1rem 2rem;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            border-bottom: 1px solid #002e5d;
        }

        header img {
            height: 60px;
            margin-right: 1rem;
        }

        header h1 {
            color: white;
            font-size: 2rem;
        }

        main {
            padding: 2rem;
            max-width: 1200px;
            margin: auto;
        }

        section {
            margin-bottom: 2rem;
        }

        h2 {
            color: var(--primary);
            margin-bottom: 0.5rem;
        }

        ul {
            list-style: none;
            padding-left: 0;
        }

        ul li::before {
            content: "\2714\0020";
            color: var(--accent);
        }

        .tech-icons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1rem;
        }

        .tech-icons i {
            font-size: 2rem;
            color: var(--accent);
        }

        .tech-icons span {
            display: flex;
            flex-direction: column;
            align-items: center;
            font-size: 0.9rem;
        }

        footer {
            background-color: var(--footer-bg);
            color: white;
            text-align: center;
            padding: 1rem;
            margin-top: 2rem;
        }

        a {
            color: var(--accent);
            text-decoration: none;
        }

        @media (max-width: 600px) {
            header {
                flex-direction: column;
                align-items: flex-start;
            }
            header h1 {
                font-size: 1.5rem;
                margin-top: 0.5rem;
            }
        }

.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
    /*width: 50%;*/
}