* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

/* 导航栏样式 */
.navbar {
    background-color: #2c3e50;
    padding: 1.5rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
}


.nav-links a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.nav-links a:hover {
    background-color: #3498db;
    border-radius: 4px;
}

/* 图片区域 */   /* 不用图片了改背景色+文字把 */
.main-image {
    height: calc(85vh - 120px);
    margin-top: 80px;
    position: relative;
    overflow: hidden;
    
}

.box1
    {
        width: 100vw;
        height: 73vh;
        border: solid 1px #95a5a6;
        margin-top: 5px;
        
        background-color: #95a5a6;
    }
    /* .inbox1 放图片就一个 */
    .imginbox
    {
        width: 40vw;
        height: 40vh;
        /* border: solid 1px red; */
        margin: 0 auto;
        margin-top: 5vh;
        background-color: #95a5a6;
    
    }



.main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background-color: red;
}

.button-container {
    position: absolute;
    bottom: 20%;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1.5rem;
    align-items: center;
    
}

/* 通用按钮样式 */
.image-btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.1rem;
    min-width: 160px;
}

/* 第一个特殊按钮 */
.download-btn {
    width: 320px;
    background: white;
    color: #2c3e50;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.download-btn>a:link,a:hover,a:visited
{
    color:#2c3e50;
text-decoration: none;
    
}
/* 其他按钮 */
.normal-btn {
    background-color: rgba(52, 152, 219, 0.9);
    color: white;
    width: 160px;
}

.normal-btn:hover {
    background-color: white;
    color: #2c3e50;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* 免责声明 */
.disclaimer {
    background-color: #f8f9fa;
    padding: 2rem;
    text-align: center;
    line-height: 1.6;
    font-size: 0.9rem;
    color: #666;
    border-top: 1px solid #eee;
   
    
}

@media (max-width: 768px) {
    .nav-links {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
   
    .main-image {    
        height: calc(100vh - 180px);
        
    }
    


    .button-container {
        flex-direction: column;
        bottom: 15%;
        width: 80%;
        gap: 1rem;
    }

    .download-btn,
    .normal-btn {
        width: 100% !important;
        max-width: 300px;
    }
}