* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body, html {
    height: 100%;
    width: 100%;
    overflow: hidden;
}

.fullscreen-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.background-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.watermark {
    position: fixed;
    bottom: 20px;
    right: 20px;
    font-family: Arial, sans-serif;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.3);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
    pointer-events: none;
    user-select: none;
}