/* 基础设置 */
body {
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #000; /* 背景纯黑 */
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #fff;
}

/* 卡片容器 */
.card-container {
    width: 90%;
    max-width: 450px;
    background: #05020d; /* 极深紫色背景 */
    border: 1px solid #2a1b52; /* 边框颜色 */
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 0 20px rgba(42, 27, 82, 0.5);
}

/* 顶部小标签 */
.badge {
    display: inline-block;
    background: linear-gradient(135deg, #8e7dff, #b194ff);
    color: #000;
    font-size: 14px;
    font-weight: bold;
    padding: 6px 20px;
    border-radius: 20px;
    margin-bottom: 25px;
}

/* 标题 */
.main-title {
    font-size: 28px;
    color: #ffe893; /* 金黄色 */
    margin: 10px 0;
    font-weight: 800;
}

.sub-title {
    font-size: 20px;
    color: #fff;
    margin-bottom: 20px;
}

/* 描述文字 */
.description {
    font-size: 15px;
    color: #ccc;
    line-height: 1.6;
    margin-bottom: 25px;
}

/* 打钩特性 */
.features {
    margin-bottom: 30px;
}

.feature-item {
    font-size: 16px;
    margin: 8px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.feature-item i {
    font-size: 14px;
}

/* 按钮样式 */
.button-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.btn {
    text-decoration: none;
    font-size: 18px;
    font-weight: bold;
    padding: 16px;
    border-radius: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    color: #fff;
    transition: transform 0.2s, box-shadow 0.2s;
}

/* App Store 渐变色 */
.btn-apple {
    background: linear-gradient(to right, #7a5fff, #f576cc);
    box-shadow: 0 5px 15px rgba(122, 95, 255, 0.4);
}

/* Google Play 渐变色 */
.btn-google {
    background: linear-gradient(to right, #4c8cff, #8367ff);
    box-shadow: 0 5px 15px rgba(76, 140, 255, 0.4);
}

.btn:hover {
    transform: scale(1.02);
}

/* 底部文字 */
.footer-text {
    margin-top: 25px;
    font-size: 12px;
    color: #666;
    line-height: 1.5;
}

/* 移动端适配 */
@media (max-width: 480px) {
    .card-container {
        padding: 30px 20px;
    }
    .main-title {
        font-size: 24px;
    }
}