/* 主要内容区域 */
.main-content {
    margin-top: 20px;
    min-height: calc(100vh - 60px);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 40px 20px;
}

.content-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 40px;
    background: linear-gradient(45deg, #17a2b8, #9b42f5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 表单容器 */
.form-container {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.site-form {
    text-align: left;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #17a2b8;
    box-shadow: 0 0 0 3px rgba(23, 162, 184, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #adb5bd;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-title {
        font-size: 2rem;
    }
    
    .form-container {
        padding: 24px;
        margin: 0 10px 30px;
    }
    
    .content-container {
        max-width: 100%;
    }
}