body {
    background: #f0f0f0;
    min-height: 100vh;
    padding-top: 20px;
    padding-bottom: 20px;
    position: relative;
    overflow-x: hidden;
}

/* 漂浮单词样式 */
.floating-word {
    position: absolute;
    color: rgba(0, 0, 0, 0.1);
    font-size: 4rem;
    /* font-weight: bold; */
    font-family: 'Arial', sans-serif;
    pointer-events: none;
    z-index: -1;
    animation: float 15s infinite linear;
}

.floating-word:nth-child(1) {
    top: 10%;
    left: 5%;
    animation-delay: 0s;
    animation-duration: 20s;
}

.floating-word:nth-child(2) {
    top: 60%;
    right: 8%;
    animation-delay: -5s;
    animation-duration: 18s;
}

.floating-word:nth-child(3) {
    top: 30%;
    left: 70%;
    animation-delay: -10s;
    animation-duration: 22s;
}

.floating-word:nth-child(4) {
    top: 69%;
    left: 4%;
    animation-delay: -10s;
    animation-duration: 22s;
}



@keyframes float {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(20px, 15px) rotate(5deg);
    }
    50% {
        transform: translate(0, 30px) rotate(0deg);
    }
    75% {
        transform: translate(-20px, 15px) rotate(-5deg);
    }
    100% {
        transform: translate(0, 0) rotate(0deg);
    }
}