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

        body {
            font-family: Arial, sans-serif;
            background: #1da527;
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 1000px;
            margin: 0 auto;
        }

        header {
            text-align: center;
            color: white;
            padding: 30px;
            background: rgba(0, 0, 0, 0.2);
            border-radius: 20px;
            margin-bottom: 30px;
        }

        header h1 {
            font-size: 2.2em;
            margin-bottom: 10px;
        }

        .badge {
            display: inline-block;
            background: #f4a020;
            color: white;
            padding: 5px 15px;
            border-radius: 20px;
            margin: 5px;
        }

        .section {
            background: rgb(0, 0, 0);
            border-radius: 20px;
            padding: 25px;
            margin-bottom: 25px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            color: #ffffff;
        }

        .section h2 {
            color: #90ee90;
            margin-bottom: 20px;
            border-bottom: 3px solid #4caf50;
            padding-bottom: 10px;
        }

        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 15px;
        }

        .card {
            background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
            border-radius: 15px;
            padding: 20px;
            position: relative;
            color: #000000 !important;
        }

        .card h3 {
            color: #1a472a;
            margin-bottom: 10px;
        }

        .card p,
        .card li,
        .card ul,
        .card span,
        .card strong,
        .card b,
        .card em,
        .card i {
            color: #000000 !important;
            line-height: 1.6;
        }

        .card ul {
            padding-left: 20px;
        }

        .num {
            position: absolute;
            top: 10px;
            right: 10px;
            width: 35px;
            height: 35px;
            background: #1a472a;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 15px;
        }

        th {
            background: #1a472a;
            color: white;
            padding: 12px;
            text-align: left;
        }

        td {
            padding: 10px 12px;
            border-bottom: 1px solid #555;
            color: #ffffff;
        }

        tr:hover {
            background: #e8f5e9;
        }

        .pin {
            background: #1a472a;
            color: white;
            padding: 3px 8px;
            border-radius: 10px;
            font-size: 12px;
        }

        .check-item {
            display: flex;
            align-items: center;
            padding: 10px;
            background: #f5f5f5;
            border-radius: 8px;
            margin: 5px 0;
            color: #333;
            cursor: pointer;
        }

        .check-item:hover {
            background: #e8f5e9;
        }

        .guide-item {
            background: #59a35f;
            padding: 10px;
            border-radius: 8px;
            font-size: 0.85em;
            color: #ffffff;
            margin-bottom: 5px;
            list-style: none;
        }

        .check-item input {
            width: 18px;
            height: 18px;
            margin-right: 10px;
        }

        .robot-box {
            background: #f0f0f0;
            border-radius: 15px;
            padding: 20px;
            text-align: center;
        }

        .robot-ascii {
            font-family: monospace;
            font-size: 11px;
            line-height: 1.3;
            background: #1e1e1e;
            color: #4ec9b0;
            padding: 15px;
            border-radius: 10px;
            overflow-x: auto;
            text-align: left;
            white-space: pre;
        }

        .sdg-box {
            background: linear-gradient(135deg, #ff9800, #f57c00);
            border-radius: 15px;
            padding: 20px;
            color: white;
            text-align: center;
        }

        .sdg-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 15px;
        }

        .sdg-badge {
            background: rgba(255, 255, 255, 0.2);
            padding: 10px 15px;
            border-radius: 8px;
        }

        footer {
            text-align: center;
            color: white;
            padding: 20px;
            margin-top: 20px;
        }

        code {
            background: #f5f5f5;
            padding: 2px 6px;
            border-radius: 4px;
            font-family: monospace;
        }

        /* Navigation Styles */
        .main-nav {
            display: flex;
            justify-content: center;
            gap: 20px;
            background: rgba(0, 0, 0, 0.5);
            padding: 10px;
            border-radius: 10px;
            margin-bottom: 20px;
        }

        .nav-link {
            color: white;
            text-decoration: none;
            font-weight: bold;
            padding: 8px 16px;
            border-radius: 5px;
            transition: background 0.3s;
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-link:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        .nav-link.active {
            background: #f4a020;
            color: white;
        }

        /* Mobile Responsiveness */
        @media (max-width: 600px) {
            body {
                padding: 10px;
            }

            header {
                padding: 20px 10px;
            }

            header h1 {
                font-size: 1.6em;
            }

            .main-nav {
                flex-direction: column;
                gap: 10px;
            }

            .nav-link {
                text-align: center;
                width: 100%;
                display: block;
            }

            .grid {
                grid-template-columns: 1fr;
                /* Stack cards vertically */
            }

            .section {
                padding: 15px;
            }

            table {
                font-size: 0.85em;
            }

            th,
            td {
                padding: 8px 5px;
            }

            .robot-ascii {
                font-size: 9px;
                /* Smaller code font */
                padding: 10px;
            }
        }