* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        
        .banner-wrapper {
            position: relative;
            width: 100%;
            height: 100vh;
            min-height: 400px;
            overflow: hidden;
            background: #0a0a1a;
        }
        
        .star-layer {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            background: #0a0a1a;
        }
        
        .spline-layer {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 2;
            background: transparent;
        }
        
        .spline-iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: none;
            background: transparent;
        }
        
        .interaction-tip {
            position: absolute;
            bottom: 20px;
            right: 20px;
            z-index: 3;
            background: rgba(0,0,0,0.5);
            color: rgba(255,255,255,0.7);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-family: monospace;
            backdrop-filter: blur(4px);
            pointer-events: none;
        }
        
        @media (max-width: 768px) {
            .banner-wrapper {
                height: 60vh;
                min-height: 500px;
            }
            .interaction-tip {
                font-size: 10px;
                bottom: 12px;
                right: 12px;
            }
        }