* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: #f9f9f9;
            font-family: Helvetica, sans-serif;
            transition: opacity 0.4s ease;
        }
        .box { text-align: center; }
        .logo-text {
            color: #228B22;
            font-size: 2.3rem;
            font-weight: bolder;
            margin-bottom: 2rem;
        }
        .text-box {
            color: white;
            background-color: #228B22;
            padding: 0 5px;
            border-radius: 3px;
            font-size: 1rem;
        }
        .y-back {
            width: 250px;
            height: 2px;
            background-color: #e2dbdb;
            margin: 2rem auto;
            position: relative;
            overflow: hidden;
        }
        .y-inner {
            height: 3px;
            width: 40px;
            background-color: #228B22;
            position: absolute;
            top: 0;
            left: -60%;
            animation: anim 1.6s infinite;
        }
        @keyframes anim {
            0% { left: -60%; }
            50% { left: 100%; }
            100% { left: 100%; }
        }
        footer {
            margin-top: 2rem;
            font-size: 0.9rem;
            color: #666;
        }
        body.fade-out { opacity: 0; }