html, body {
            margin: 0;
            padding: 0;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            background: #f5f5f5;
            color: #333;
            height: 100%;
        }

        .wrapper {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .card {
            background: #ffffff;
            padding: 2rem 2.5rem;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            max-width: 480px;
            width: 100%;
            box-sizing: border-box;
            text-align: center;
        }

        h1 {
            margin: 0 0 0.5rem;
            font-size: 1.8rem;
        }

        p {
            margin: 0.25rem 0;
            line-height: 1.5;
            color: #666;
        }

        .tag {
            display: inline-block;
            margin-top: 1.25rem;
            padding: 0.3rem 0.8rem;
            border-radius: 999px;
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.07em;
            background: #eee;
            color: #555;
        }