:root {
            --main-blue: #ffffff;
            --main-pink: #ff6fcb;
            --main-orange: #ffb86c;
            --main-dark: #181c2f;
            --main-light: #f7faff;
            --main-gradient: linear-gradient(120deg, #5ad1ff 0%, #ff6fcb 60%, #ffb86c 100%);
            --main-bg: #151942;
            --button-bg: #ffffff;
            --button-bg-hover: #eeeeee;
            --button-border: #5ad1ff;
            --button-border-hover: #ffb86c;
            --button-text: #001679;
            --button-desc: #eaf6ffcc;
        }

        html {
            box-sizing: border-box;
            width: 100vw;
            overflow-x: hidden;
        }
        *, *:before, *:after {
            box-sizing: inherit;
        }
        html, body {
            height: 100%;
            width: 100vw;
            overflow-x: hidden;
        }
        body {
            min-height: 100vh;
            margin: 0;
            padding: 0 12px;
            background: var(--main-bg);
            color: #eaf6ff;
            font-family: "poppins", sans-serif;
            font-style: normal;
            font-weight: 500;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center; /* Center vertically */
            box-sizing: border-box;
            width: 100vw;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 420px;
            background: #001679;
            border-radius: 22px;
            box-shadow: 0 4px 32px #5ad1ff22, 0 2px 8px #ff6fcb22;
            padding: 2.2rem 1.2rem 2.2rem 1.2rem;
            /* margin-top removed for centering */
            display: flex;
            flex-direction: column;
            align-items: center;
            box-sizing: border-box;
        }
        .container img {
            width: 260px;
            max-width: 60vw;
            margin-bottom: 1.2rem;
            border-radius: 18px;

        }
        h1 {
            font-family: "poppins", sans-serif;
            font-style: normal;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--main-blue);
            margin-bottom: 0.7rem;
            margin-top: 0.2rem;
            letter-spacing: 0.5px;
            text-shadow: 0 2px 12px #0002;
        }
        h3 {
            font-family: "poppins", sans-serif;
            font-style: normal;
            font-size: 1.15rem;
            font-weight: 700;
            color: #eaf6ff;
            margin-bottom: 1.5rem;
            margin-top: 0.2rem;
            text-shadow: 0 1px 8px #0002;
            text-align: center;
            width: 100%;
        }
        .category-list {
            width: 100%;
            display: flex;
            flex-direction: column;
            gap: 1.1rem;
            align-items: center;
        }
        .category-button {
            width: 100%;
            background: var(--button-bg);
            color: var(--button-text);
            font-family: "poppins", sans-serif;
            font-style: normal;
            font-size: 1.13rem;
            font-weight: 700;
            border: 2px solid var(--button-border);
            border-radius: 16px;
            padding: 1.1em 0.5em;
            margin: 0;
            box-shadow: 0 2px 12px #5ad1ff33;
            cursor: pointer;
            transition: transform 0.15s, box-shadow 0.15s, background 0.2s, border-color 0.2s;
            text-align: center;
            letter-spacing: 0.2px;
            outline: none;
            display: block;
            text-decoration: none;
        }
        .category-button:hover, .category-button:focus {
            background: var(--main-dark);
            color: var(--main-blue);
            border-color: var(--button-border-hover);
            transform: scale(1.03) translateY(-2px);
            box-shadow: 0 6px 24px #ffb86c33;
        }
        .category-desc {
            display: block;
            font-size: 0.98em;
            font-weight: 700;
            color: var(--button-desc);
            margin-top: 0.2em;
            letter-spacing: 0.1px;
        }
        .category-list a {
            text-decoration: none;
            width: 100%;
        }
        .category-button, .category-button:visited, .category-button:active {
            text-decoration: none !important;
        }
        .settings-link {
            width: 100%;
        }
        .settings-btn {
            width: 100%;
            background: var(--button-bg);
            color: var(--button-text);
            font-family: "poppins", sans-serif;
            font-style: normal;
            font-size: 1.13rem;
            font-weight: 700;
            border: 2px solid var(--button-border);
            border-radius: 16px;
            padding: 1.1em 0.5em;
            margin: 0;
            box-shadow: 0 2px 12px #5ad1ff33;
            cursor: pointer;
            transition: transform 0.15s, box-shadow 0.15s, background 0.2s, border-color 0.2s;
            text-align: center;
            letter-spacing: 0.2px;
            outline: none;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.7em;
            text-decoration: none;
        }
        .settings-btn:hover, .settings-btn:focus {
            background: var(--main-dark);
            color: var(--main-blue);
            border-color: var(--button-border-hover);
            transform: scale(1.03) translateY(-2px);
            box-shadow: 0 6px 24px #ffb86c33;
        }
        .settings-btn i {
            color: #FFD700;
            font-size: 1.2em;
        }
        .download-app {
            margin-top: 1.5rem;
            font-size: 1.01rem;
            color: #FFD700;
            text-align: center;
        }
        .download-app a {
            color: #5ad1ff;
            text-decoration: underline;
            font-weight: 700;
        }
        @media (max-width: 600px) {
            body {
                padding: 0 6px;
            }
            .container {
                padding: 1.2rem 0.5rem 1.5rem 0.5rem;
                /* margin-top removed */
                margin-bottom: 6vw; /* Add margin at the bottom for mobile */
            }
            h1 {
                font-size: 1.35rem;
            }
            h3 {
                font-size: 1.01rem;
            }
            .category-button, .settings-btn {
                font-size: 1.01rem;
                padding: 0.9em 0.2em;
            }
            .container img {
                width: 260px;
            }
        }
        @media (max-width: 400px) {
            body {
                padding: 0 2px;
            }
            .container {
                padding: 0.7rem 0.1rem 1rem 0.1rem;
                margin-bottom: 8vw; /* More margin for very small screens */
            }
        }
    <