body {
            margin: 0;
            font-family: Arial, sans-serif;
            background: #f4f4f4;
            color: #222;
        }

        header {
            background: #111827;
            color: white;
            padding: 20px;
            text-align: center;
        }

        main {
            max-width: 1000px;
            margin: 30px auto;
            padding: 0 20px;
        }

        .box {
            background: white;
            padding: 25px;
            border-radius: 10px;
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        th,
        td {
            padding: 12px;
            border-bottom: 1px solid #ddd;
            text-align: left;
        }

        th {
            background: #1f2937;
            color: white;
        }

        tr:hover {
            background: #f8f8f8;
        }

        .rank {
            font-weight: bold;
            width: 90px;
        }

        .points {
            text-align: right;
            font-weight: bold;
        }

        .status {
            font-weight: bold;
        }

        .editable {
            color: #1d4ed8;
        }

        .locked {
            color: #047857;
        }

        a {
            color: #111827;
        }