body {
    background: linear-gradient(135deg, #f8fafc 0%, #e3e8ee 100%);
    min-height: 100vh;
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}
.login-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 32px rgba(0,0,0,0.08);
    padding: 40px 32px 32px 32px;
    width: 340px;
    text-align: center;
}
.login-card h2 {
    font-weight: 700;
    margin-bottom: 32px;
    color: #222;
    letter-spacing: 1px;
}
.form-group {
    margin-bottom: 20px;
}
input[type=text], input[type=password] {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    font-size: 16px;
    background: #f9fafb;
    outline: none;
    transition: border 0.2s;
}
input[type=text]:focus, input[type=password]:focus {
    border-color: #1677ff;
}
button.ant-btn {
    width: 100%;
    height: 40px;
    font-size: 16px;
    border-radius: 8px;
}
.error {
    color: #ff4d4f;
    margin-bottom: 16px;
    font-size: 14px;
}