/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* 卡片容器 */
.card-container {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

/* 毛玻璃卡片核心样式 */
.glass-card {
    width: 320px;
    padding: 30px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    color: #fff;
    text-decoration: none;
}

/* 卡片 hover 效果 */
.glass-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    background: rgba(255, 255, 255, 0.2);
}

/* 卡片标题 */
.card-title {
    font-size: 24px;
    margin-bottom: 16px;
    font-weight: 600;
}

/* 卡片副标题 */
.card-subtitle {
    font-size: 14px;
    line-height: 1.6;
    opacity: 0.9;
}

/* 空卡片样式 */
.empty-card {
    cursor: default;
}

.empty-card:hover {
    transform: none;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}