body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    color: #fff;
    overflow: hidden; /* 隐藏全局滚动条 */
}

canvas {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -1;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(270deg, #600000, #606000);
    background-size: 600% 600%;
    /* animation: background 30s ease infinite; */
    background: url("sponsor-bg.jpg") no-repeat center center fixed;
    background-size: cover;
}

.container {
    width: 100%;
    overflow: hidden;
    position: relative;
    box-sizing: border-box;
}

header {
    text-align: center;
    margin: 0 0 20px;
    position: sticky; /* 保持在页面顶部 */
    top: 0;
    z-index: 1; /* 确保在滚动列表之上 */
    padding: 10px 0;
    background-color: rgb(48, 0, 0, 0.3);
    box-shadow: 0px 8px 4px 2px rgba(0, 0, 0, 0.5);
}

header h1 {
    font-size: 3rem;
    color: #f1c40f;
    text-shadow: 0 0 10px #f39c12;
    animation: pulse 3s infinite alternate ease-in-out;
}

header h2 {
    text-align: center;
    font-size: 2rem;
    margin: 0 0 20px;
    color: #87f10f;
    text-shadow: 0 0 10px #25f312;
    animation: bounce 1.5s infinite alternate ease-in-out;
}

.card {
    margin: 32px auto;
    padding: 16px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    width: 90%;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);
}

.sponsor-item h2 {
    font-size: 4.5rem;
    margin: 0;
}

.sponsor-item p {
    font-size: 4rem;
    margin: 0;
    color: #f1c40f;
    font-weight: bolder;
}

.scrolling-list {
    display: flex;
    flex-direction: column;
    animation: scroll 240s linear infinite;
    overflow: hidden; /* 确保列表自身不显示滚动条 */
}

@keyframes scroll {
    0% {
        transform: translateY(3%);
    }

    100% {
        transform: translateY(-100%);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        text-shadow: 0 0 10px #f39c12, 0 0 20px #f39c12;
    }
    100% {
        transform: scale(1.2);
        text-shadow: 0 0 20px #f1c40f, 0 0 40px #f39c12;
    }
}

@keyframes bounce {
    0% {
        transform: translateY(0);
        text-shadow: 0 0 10px #25f312, 0 0 20px #87f10f;
    }
    100% {
        transform: translateY(-10px);
        text-shadow: 0 0 20px #87f10f, 0 0 40px #25f312;
    }
}

@keyframes background {
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}