body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    /*background: linear-gradient(135deg, #1a2a6c, #2c3e50);*/
    padding: 20px;
    background-image: url('/static/login/bj.png');
    background-size: cover;
    background-position: center; /* 确保图像居中 */
    background-repeat: no-repeat; /* 防止图像重复 */
}
.container1 {
    display: flex;
    width: 900px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}
.left-panel {
    flex: 1;
    background: linear-gradient(120deg, rgba(78, 115, 223, 0.8), rgba(42, 65, 145, 0.9));
    color: white;
    padding: 40px;
    position: relative;
    overflow: hidden;
}
.system-title {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 15px;
}
.system-desc {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 30px;
    opacity: 0.9;
}
.features {
    margin-top: 30px;
}
.feature {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}
.feature-icon {
    width: 30px;
    height: 30px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 10px;
}
.right-panel {
    flex: 1;
    background: #ffffffd6;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.login-title {
    text-align: center;
    color: #4e73df;
    font-size: 24px;
    margin-bottom: 30px;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-size: 14px;
}
.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: all 0.3s;
}
.form-group input:focus {
    border-color: #4e73df;
    box-shadow: 0 0 0 2px rgba(78, 115, 223, 0.2);
    outline: none;
}
.login-btn {
    width: 100%;
    padding: 12px;
    background: #4e73df;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
    margin-top: 10px;
}
.login-btn:hover {
    background: #3a56c4;
}
.copyright {
    text-align: center;
    margin-top: 30px;
    font-size: 11px;
    color: #0000009c;
}
@media (max-width: 768px) {
    .left-panel { display: none; }
}