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

body {
    background: linear-gradient(135deg, #f8f9ff 0%, #e6e9ff 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #333;
}

.container {
    width: 100%;
    max-width: 450px;
    text-align: center;
    padding: 30px 25px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    animation: fadeIn 0.6s ease-out;
}

.avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6a7dfe 0%, #5a6de9 100%);
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 20px rgba(106, 125, 254, 0.3);
}

.avatar i {
    font-size: 45px;
    color: white;
}

h1 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #444;
    font-weight: 600;
}

p {
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
    font-size: 16px;
}

.buttons-container {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 24px;
    border-radius: 16px;
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    min-width: 160px;
    flex: 1;
    animation: fadeIn 0.8s ease-out;
}

.btn-primary {
    background: linear-gradient(135deg, #6a7dfe 0%, #5a6de9 100%);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(106, 125, 254, 0.4);
    background: linear-gradient(135deg, #5a6de9 0%, #4a5cd4 100%);
}

.btn-secondary {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(76, 175, 80, 0.4);
    background: linear-gradient(135deg, #45a049 0%, #3d8b40 100%);
}

.btn:active {
    transform: translateY(1px);
}

.btn i {
    margin-right: 8px;
    font-size: 18px;
}

.hint {
    margin-top: 25px;
    font-size: 14px;
    color: #888;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 微调响应式设计 */
@media (max-width: 480px) {
    .container {
        padding: 25px 20px;
    }
    
    .avatar {
        width: 85px;
        height: 85px;
    }
    
    .avatar i {
        font-size: 40px;
    }
    
    h1 {
        font-size: 22px;
    }
    
    p {
        font-size: 15px;
    }
    
    .buttons-container {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn {
        width: 100%;
        padding: 15px 20px;
    }
}