body {
    background: #f8fafc;
    color: #333;
    font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 480px;
    margin: 80px auto 0 auto;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    padding: 40px 32px 32px 32px;
    text-align: center;
}
.error-code {
    font-size: 72px;
    font-weight: bold;
    color: #20c997;
    margin-bottom: 8px;
}
.error-title {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 12px;
}
.error-desc {
    font-size: 16px;
    color: #666;
    margin-bottom: 32px;
}
.home-btn {
    display: inline-block;
    padding: 12px 32px;
    background: linear-gradient(90deg, #20c997 0%, #0d6efd 100%);
    color: #fff;
    border: none;
    border-radius: 24px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.2s;
    box-shadow: 0 2px 8px rgba(32,201,151,0.08);
}
.home-btn:hover {
    background: linear-gradient(90deg, #0d6efd 0%, #20c997 100%);
}
.lang {
    margin-top: 32px;
    color: #aaa;
    font-size: 13px;
}