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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
    line-height: 1.8;
    color: #2c3e50;
    background: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 180px 0 140px;
    text-align: center;
}

.logo {
    font-size: 72px;
    font-weight: 300;
    letter-spacing: 16px;
    margin: 0;
}

main {
    flex: 1;
    padding: 0;
}

.hero {
    padding: 120px 0 100px;
    text-align: center;
}

.tagline {
    font-size: 36px;
    color: #2c3e50;
    font-weight: 300;
    margin-bottom: 25px;
    letter-spacing: 12px;
}

.description {
    font-size: 24px;
    color: #7f8c8d;
    font-weight: 300;
    letter-spacing: 4px;
}

.services {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 0 80px;
    margin-bottom: 120px;
}

.service-item {
    padding: 60px 40px;
    transition: all 0.3s ease;
}

.service-item:hover {
    transform: translateY(-8px);
}

.service-icon {
    color: #667eea;
    margin-bottom: 35px;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.service-item:hover .service-icon {
    opacity: 1;
}

.service-item h3 {
    font-size: 28px;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 400;
    letter-spacing: 2px;
}

.service-item p {
    color: #7f8c8d;
    font-size: 16px;
    line-height: 1.8;
    letter-spacing: 1px;
}

footer {
    border-top: 1px solid #ecf0f1;
    padding: 40px 0;
    text-align: center;
    margin-top: auto;
}

.copyright {
    color: #bdc3c7;
    margin-bottom: 20px;
    font-size: 14px;
    letter-spacing: 1px;
}

.beian {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #95a5a6;
    text-decoration: none;
    font-size: 14px;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.beian:hover {
    color: #667eea;
}

.beian-icon {
    flex-shrink: 0;
}