* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', serif;
    background: linear-gradient(135deg, #0f0c29, #1a1433, #2c1f4a);
    color: #f0d9a8;
    min-height: 100vh;
    padding: 20px 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-container {
    text-align: center;
    width: 100%;
    max-width: 480px;        /* 手机屏幕最佳宽度 */
    margin: 0 auto;
}

.title {
    font-size: 2.1rem;
    margin-bottom: 50px;
    color: #e8c78f;
    text-shadow: 0 0 20px rgba(232, 199, 143, 0.6);
    letter-spacing: 6px;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;     /* 默认三列（手机上会自动换行） */
    gap: 18px;
    width: 100%;
}

/* 卡片基础样式 */
.box {
    border: 3px solid #c0392b;
    background: rgba(30, 22, 48, 0.88);
    aspect-ratio: 1 / 0.85;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.45rem;
    color: #f0d9a8;
    transition: all 0.3s ease;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(192, 57, 43, 0.4);
    text-decoration: none;
    min-height: 110px;
}

a.box {
    cursor: pointer;
}

a.box:hover {
    transform:
}