body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

.container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.header {
    background-color: #3c80c5;
    color: white;
    padding: 20px 30px;
    display: flex;
    align-items: center;
    min-height: 100px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 25px;
}

.university-logo {
    width: 150px;
    height: auto;
    border-radius: 50%;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.platform-name h2 {
    margin: 0;
    font-size: 28px;
    font-weight: bold;
    color: white;
}

.main-content {
    display: flex;
    flex-grow: 1;
    justify-content: space-between;
    padding: 20px;
}

.left-panel {
    width: 60%; /* 从55%增加到60% */
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px; /* 增加内边距 */
}

.building-image-container {
    position: relative;
    overflow: hidden;
    border-radius: 20px; /* 从15px增加到20px */
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3); /* 增强阴影效果 */
    width: 100%;
    max-width: 750px; /* 从650px增加到750px */
    padding: 25px; /* 从15px增加到25px */
    background: linear-gradient(135deg, #4d92d7 0%, #437fc7 100%);
    margin: 0 auto; /* 居中显示 */
}

.building-image {
    width: 100%;
    height: auto;
    background: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(255,255,255,0.3) 100%);
    background-size: cover;
    background-position: center;
    transition: transform 0.3s ease;
    min-height: 500px; /* 从450px增加到500px */
    object-fit: cover;
    border-radius: 15px; /* 从10px增加到15px */
}

.building-image:hover {
    transform: scale(1.02);
}

.right-panel {
    width: 40%; /* 从45%减少到40% */
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-box {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 20px;
    width: 85%; /* 从80%增加到85% */
    max-width: 450px; /* 从400px增加到450px */
}

.tab-group {
    display: flex;
    margin-bottom: 20px;
}

.tab {
    background-color: transparent;
    border: none;
    cursor: pointer;
    font-size: 16px;
    padding: 10px 20px;
    border-bottom: 2px solid transparent;
}

.tab.active {
    border-bottom: 2px solid #5093d7;
}

.login-form {
    display: none;
}

.login-form.account {
    display: block;
}

.form-group {
    margin-bottom: 15px;
}

.form-group input {
    width: 100%;
    padding: 12px; /* 从10px增加到12px */
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px; /* 增大字体 */
}

.captcha-equation {
    display: inline-block;
    margin-left: 10px;
    font-size: 16px; /* 增大字体 */
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    font-size: 16px; /* 增大字体 */
}

.checkbox-label input[type="checkbox"] {
    margin-right: 8px;
    transform: scale(1.2); /* 放大复选框 */
}

.login-btn {
    background-color: #4f96de;
    color: white;
    border: none;
    padding: 12px 20px; /* 从10px增加到12px */
    border-radius: 5px;
    width: 100%;
    cursor: pointer;
    font-size: 16px; /* 增大字体 */
}

.forgot-password {
    display: block;
    text-align: right;
    margin-top: 10px;
    color: #4896e4;
    text-decoration: none;
    font-size: 16px; /* 增大字体 */
}

.social-login {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.social-btn {
    background-color: white;
    border: 1px solid #ccc;
    border-radius: 50%;
    padding: 12px; /* 从10px增加到12px */
    cursor: pointer;
}

.mobile-icon {
    width: 28px; /* 从24px增加到28px */
    height: 28px; /* 从24px增加到28px */
    object-fit: contain;
}

.qq-icon {
    width: 28px; /* 从24px增加到28px */
    height: 28px; /* 从24px增加到28px */
    object-fit: contain;
}

.footer {
    background-color: #4489cf;
    color: white;
    text-align: center;
    padding: 15px 0; /* 从10px增加到15px */
    font-size: 16px; /* 增大字体 */
}