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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo h1 {
    color: #2c5aa0;
    font-size: 1.8rem;
    font-weight: 700;
}

.logo p {
    color: #666;
    font-size: 0.9rem;
    margin-top: 0.2rem;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #2c5aa0;
}

main {
    margin-top: 80px;
}

.hero {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 4rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.5rem;
    color: #2c5aa0;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content > p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.feature {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.feature .icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 1rem;
}

.feature h4 {
    color: #2c5aa0;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.feature p {
    color: #666;
    font-size: 0.95rem;
}

section {
    padding: 4rem 0;
}

section h2 {
    text-align: center;
    font-size: 2.2rem;
    color: #2c5aa0;
    margin-bottom: 3rem;
    font-weight: 700;
}

.about {
    background: #f8f9fa;
}

.about-text p {
    font-size: 1.1rem;
    color: #555;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.stat h3 {
    font-size: 2.5rem;
    color: #e74c3c;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat p {
    color: #666;
    font-weight: 500;
}

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

.service-item {
    background: white;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-left: 4px solid #2c5aa0;
    transition: transform 0.3s ease;
}

.service-item:hover {
    transform: translateY(-3px);
}

.service-item h3 {
    color: #2c5aa0;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.service-item > p {
    color: #666;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.service-item ul {
    list-style: none;
}

.service-item li {
    color: #555;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.service-item li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.cases {
    background: #f8f9fa;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.case-item {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.case-item:hover {
    transform: translateY(-3px);
}

.case-image {
    height: 200px;
    background: #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-image {
    color: #888;
    font-size: 1.1rem;
}

.case-info {
    padding: 1.5rem;
}

.case-info h4 {
    color: #2c5aa0;
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.case-info p {
    color: #666;
    margin-bottom: 0.5rem;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-3px);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.advantage-item h3 {
    color: #2c5aa0;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.advantage-item p {
    color: #555;
    line-height: 1.7;
}

.contact {
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.contact-item h4 {
    color: #2c5aa0;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.contact-item p {
    color: #555;
    margin-bottom: 0.5rem;
}

.consultation {
    background: white;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.consultation h3 {
    color: #2c5aa0;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.consultation > p {
    color: #666;
    margin-bottom: 2rem;
}

.consultation-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.consultation-form input,
.consultation-form select,
.consultation-form textarea {
    padding: 1rem;
    border: 2px solid #e1e5e9;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.consultation-form input:focus,
.consultation-form select:focus,
.consultation-form textarea:focus {
    outline: none;
    border-color: #2c5aa0;
}

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

.consultation-form button {
    background: #2c5aa0;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.consultation-form button:hover {
    background: #1e3d6f;
}

footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: #3498db;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
    color: #bdc3c7;
}

.footer-section p {
    color: #bdc3c7;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #95a5a6;
}

@media (max-width: 768px) {
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .hero-features {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    
    header .container {
        flex-direction: column;
        text-align: center;
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    section {
        padding: 2rem 0;
    }
    
    section h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero-features,
    .services-grid,
    .cases-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 15px;
    }
}