* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}
body {
    /*background: #f5f5f5;*/
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-image: url("../image/back@2x.png");
    background-size: cover;
}
.login-container {
    width: 100%;
    max-width: 500px;
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}
.login-header {
    text-align: center;
    margin-bottom: 30px;
}
.login-header h1 {
    color: #4285f4;
    font-size: 28px;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #555;
}
.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}
.form-group input:focus {
    border-color: #4285f4;
    outline: none;
}
.remember-forgot {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}
.login-btn {
    width: 100%;
    padding: 12px;
    background: #4285f4;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}
.login-btn:hover {
    background: #3367d6;
}
.register-link {
    text-align: center;
    margin-top: 20px;
}
.register-link a {
    color: #4285f4;
    text-decoration: none;
}

/* 平板适配 */
@media (max-width: 768px) {
    .login-container {
        padding: 30px 20px;
        margin: 0 15px;
    }
    .login-header h1 {
        font-size: 24px;
    }
}