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

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

/* Header */
header {
    background-color: #1a1a1a;
    color: #fff;
    padding: 20px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

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

.logo img {
    height: 40px;
    width: auto;
    display: block;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

nav ul li a:hover,
nav ul li a.active {
    color: #f5c842;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.hero h2 {
    font-size: 42px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    opacity: 0.9;
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-item {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-item h3 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 22px;
}

.feature-item p {
    color: #666;
    line-height: 1.8;
}

/* Content Sections */
.content-section {
    padding: 60px 0;
}

.content-section h2 {
    font-size: 32px;
    margin-bottom: 30px;
    color: #1a1a1a;
}

.content-section p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.service-list {
    list-style: none;
    margin-top: 30px;
}

.service-list li {
    padding: 15px;
    margin-bottom: 15px;
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    border-radius: 4px;
}

.service-list li h3 {
    color: #333;
    margin-bottom: 8px;
}

.service-list li p {
    color: #666;
    margin-bottom: 0;
}

.contact-info {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    margin-top: 30px;
}

.contact-info p {
    margin-bottom: 15px;
    font-size: 16px;
}

.contact-info strong {
    color: #667eea;
    display: inline-block;
    width: 100px;
}

/* Footer */
footer {
    background-color: #1a1a1a;
    color: #fff;
    text-align: center;
    padding: 30px 0;
    margin-top: 60px;
}

footer p {
    margin-bottom: 10px;
    opacity: 0.8;
}

footer a {
    color: #f5c842;
    text-decoration: none;
    transition: opacity 0.3s;
}

footer a:hover {
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 20px;
    }

    nav ul {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .hero h2 {
        font-size: 32px;
    }

    .hero p {
        font-size: 18px;
    }

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