:root {
            --primary-color: #00796b;
            --secondary-color: #004d40;
            --text-color: #333;
            --bg-color: #f4f7f6;
        }

        body {
            font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
            margin: 0;
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.6;
        }

        header, footer {
            background: var(--primary-color);
            color: white;
            padding: 1rem;
            text-align: center;
        }

        nav {
            background: var(--secondary-color);
            padding: 0.5rem;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        nav a {
            color: white;
            text-decoration: none;
            font-size: 0.9rem;
        }

        .hero-banner {
            width: 100%;
            height: 200px;
            background: url('/assets/mini-banner.png') center/cover no-repeat, var(--primary-color);
        }

        .container {
            max-width: 900px;
            margin: 20px auto;
            padding: 20px;
            background: white;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        .card { padding: 20px; }

        input, button {
            width: 100%;
            padding: 10px;
            margin: 10px 0;
            border: 1px solid #ddd;
            border-radius: 4px;
        }

        button {
            background: var(--primary-color);
            color: white;
            border: none;
            cursor: pointer;
        }

        .help-icon {
            display: block;
            margin: 0 auto;
            width: 70px;
            height: 70px;
            transition: transform 0.3s;
        }

        .help-icon:hover { transform: scale(1.1); }

        @media (min-width: 768px) {
            .row { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
        }