/* --- CSS VARIABLES --- */
        :root {
            --primary-blue: #003366; /* Trustworthy Blue */
            --accent-red: #D32F2F;   /* Emergency Red */
            --plumbing-cyan: #00BCD4;
            --text-dark: #333;
            --text-light: #f4f4f4;
            --white: #ffffff;
            --light-gray: #f9f9f9;
        }

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

        body {
            font-family: 'Open Sans', sans-serif;
            color: var(--text-dark);
            line-height: 1.6;
        }

        h1, h2, h3, h4 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
        }

        a { text-decoration: none; }
        ul { list-style: none; }