/* 全局样式 */
:root {
    --primary-color: #ff6600;
    --secondary-color: #333333;
    --light-gray: #f5f5f5;
    --dark-gray: #333333;
    --text-color: #333333;
    --border-color: #dddddd;
    --link-color: #0066cc;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: #ffffff;
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
    color: var(--link-color);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-weight: 500;
    line-height: 1.2;
}

h1 {
    font-size: 24px;
    color: var(--primary-color);
}

h2 {
    font-size: 20px;
    color: var(--secondary-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

/* 顶部导航 */
.main-header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    padding: 10px 0;
    margin-bottom: 20px;
}

.navbar {
    padding: 0;
}

.navbar-brand h1 {
    margin: 0;
    font-size: 22px;
}

.navbar-nav .nav-item {
    margin-left: 5px;
}

.navbar-nav .nav-link {
    padding: 8px 12px;
    font-size: 16px;
    color: var(--text-color);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--primary-color);
    background-color: rgba(255, 102, 0, 0.05);
}

/* 主要内容 */
.main-content {
    padding: 20px 0 40px;
}

/* 测试说明 */
.test-intro {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.intro-text p {
    margin-bottom: 15px;
    font-size: 16px;
    line-height: 1.8;
}

.intro-text .warning {
    color: #ff6600;
    font-weight: 500;
}

/* 测试表单 */
.test-form {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
}

.form-container h2 {
    text-align: center;
    margin-bottom: 25px;
}

.form-label {
    font-weight: 500;
    margin-bottom: 10px;
}

.form-control {
    height: 50px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 10px 15px;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(255, 102, 0, 0.25);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 10px 25px;
    font-size: 16px;
    font-weight: 500;
    border-radius: 4px;
    width: 100%;
    margin-top: 15px;
}

.btn-primary:hover {
    background-color: #e55c00;
    border-color: #e55c00;
}

/* 最新测算结果 */
.latest-results {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.result-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.result-list li {
    background-color: #f9f9f9;
    padding: 10px 15px;
    border-radius: 4px;
    font-size: 16px;
    text-align: center;
    border: 1px solid #eee;
}

/* 知识大全 */
.knowledge-base {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.knowledge-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
}

.knowledge-list li {
    margin-bottom: 10px;
}

.knowledge-list a {
    display: block;
    padding: 8px 12px;
    background-color: #f9f9f9;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.knowledge-list a:hover {
    background-color: #f0f0f0;
    color: var(--primary-color);
    text-decoration: none;
}

/* 页脚 */
.main-footer {
    background-color: #f5f5f5;
    padding: 30px 0;
    border-top: 1px solid #ddd;
}

.footer-content {
    text-align: center;
}

.footer-content p {
    margin-bottom: 10px;
    color: #666;
    font-size: 14px;
}

.footer-content .disclaimer {
    color: #999;
    font-size: 12px;
}

.footer-content .copyright {
    margin-top: 20px;
    font-size: 12px;
}

.footer-content strong {
    color: var(--primary-color);
}

/* 响应式样式 */
@media (max-width: 992px) {
    .navbar-nav .nav-item {
        margin-left: 0;
    }
    
    .result-list {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

@media (max-width: 768px) {
    .navbar-brand h1 {
        font-size: 20px;
    }
    
    .test-form {
        padding: 20px;
    }
    
    .knowledge-list {
        grid-template-columns: 1fr;
    }
    
    .result-list {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}