body {
    margin: 0;
    padding: 0;
    background: url('image/back.png') no-repeat center center fixed;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    display: flex;
    width: 80vw;
    height: 80vh;
    max-width: 90%;
    max-height: 90%;
    aspect-ratio: 16/9;
}

.left-section {
    width: 50%;
    height: 100%;
    background: url('image/Role.png') no-repeat center center;
    background-size: contain;
}

.right-section {
    width: 50%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.top-section {
    height: 41.66%; /* 450/1080 ≈ 41.66% */
    background: url('image/weblogo.png') no-repeat center center;
    background-size: contain;
}

.middle-section {
    height: 46.3%; /* 500/1080 ≈ 46.3% */
}

.bottom-section {
    height: 12.04%; /* 130/1080 ≈ 12.04% */
    background: url('image/university.png') no-repeat center center;
    background-size: contain;
}

.middle-section {
    height: 46.3%; /* 500/1080 ≈ 46.3% */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-family: "STLiti", "SimLi", "LiSu", "Microsoft YaHei", serif;
    font-size: 80px;
    font-weight: normal;
    gap: 20px;
    text-align: center;
}

    .middle-section a {
        font-family: "STLiti", "SimLi", "LiSu", "Microsoft YaHei", serif;
        font-size: 65px;
        font-weight: normal;
        color: #302000;
        text-decoration: none !important;
        transition: all 0.3s ease;
    }

        .middle-section a:hover {
            color: #130d00;
            transform: scale(1.05);
        }

@media (max-aspect-ratio: 16/9) {
    .container {
        width: 90vw;
        height: auto;
    }
}