/* 基础样式 */
body {
    background-color: #0f0f1a;
    color: #e0e0e0;
    line-height: 1.6;
}

/* 导航栏 */
.navbar {
    background-color: rgba(10, 10, 20, 0.8);
    border-bottom: 1px solid #222266;
}
.navbar-brand {
    font-size: 1.8rem;
    font-weight: bold;
    color: #8844ff;
    text-shadow: 0 0 10px rgba(136, 68, 255, 0.5);
}

/* 卡片通用样式 */
.card-style {
    background-color: rgba(30, 30, 50, 0.6);
    border: 1px solid #222266;
    border-radius: 10px;
    padding: 2rem;
    margin-bottom: 2rem;
}

/* 按钮交互 */
.download-badge {
    transition: transform 0.3s ease;
}
.download-badge:hover {
    transform: scale(1.05);
}

/* 语言切换器 */
.lang-switcher {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 1000;
}
.lang-btn {
    background: rgba(136, 68, 255, 0.8);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s;
}
.lang-btn:hover {
    background: #8844ff;
    box-shadow: 0 0 10px rgba(136, 68, 255, 0.5);
}

/* 页脚 */
footer {
    background: linear-gradient(to right, rgba(10, 10, 20, 0.9), rgba(15, 15, 30, 0.9));
    border-top: 1px solid #222266;
    backdrop-filter: blur(5px);
}