* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 1.8rem;
    font-weight: 600;
}

header nav {
    display: flex;
    gap: 2rem;
}

header nav a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background-color 0.3s;
}

header nav a:hover,
header nav a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

main {
    padding: 2rem 0;
    flex: 1;
}

.hero {
    text-align: center;
    padding: 3rem 0;
    background: white;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #667eea;
}

.hero p {
    font-size: 1.2rem;
    color: #666;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.feature-card h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.feature-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.feature-card a {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
    transition: opacity 0.3s;
}

.feature-card a:hover {
    opacity: 0.9;
}

.search-box {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.search-box input {
    flex: 1;
    padding: 0.8rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.search-box input:focus {
    outline: none;
    border-color: #667eea;
}

.search-box button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: opacity 0.3s;
}

.search-box button:hover {
    opacity: 0.9;
}

.quick-links {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.quick-links h3 {
    color: #667eea;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.links-grid a {
    display: block;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 5px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s;
    text-align: center;
}

.links-grid a:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

footer p {
    margin: 0;
}

footer small {
    font-size: 14px;
    line-height: 1.6;
    color: #ffffff;
}

footer a {
    color: #ffffff;
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.3s;
}

footer a:hover {
    color: #d7d7ff;
}

footer a:focus-visible {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

.site-beian small {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.beian-sep {
    color: rgba(255, 255, 255, 0.7);
}

.beian-icon {
    width: 14px;
    height: 14px;
    margin-right: 0.25rem;
    vertical-align: text-bottom;
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 1rem;
    }

    header nav {
        gap: 1rem;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .features {
        grid-template-columns: 1fr;
    }
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.resource-item {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.resource-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.resource-item h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

.resource-item p {
    color: #666;
    margin-bottom: 1rem;
}

.resource-item a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.resource-item a:hover {
    text-decoration: underline;
}

.snippets-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.snippet-item {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.snippet-item h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

.snippet-item .description {
    color: #666;
    margin-bottom: 1rem;
}

.snippet-item pre {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 1rem;
}

.snippet-item code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    color: #333;
}

.copy-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: opacity 0.3s;
}

.copy-btn:hover {
    opacity: 0.9;
}