* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Microsoft YaHei", Arial, sans-serif; line-height: 1.6; }
.navbar { background: #2c3e50; color: white; padding: 1rem; display: flex; justify-content: space-between; align-items: center; }
.nav-brand { font-size: 1.5rem; font-weight: bold; }
.nav-menu { list-style: none; display: flex; gap: 2rem; }
.nav-menu a { color: white; text-decoration: none; transition: color 0.3s; }
.nav-menu a:hover { color: #3498db; }
.hero { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; text-align: center; padding: 4rem 2rem; }
.hero h1 { font-size: 3rem; margin-bottom: 1rem; }
.hero p { font-size: 1.2rem; margin-bottom: 2rem; }
.hero button { background: #e74c3c; color: white; border: none; padding: 1rem 2rem; font-size: 1.1rem; border-radius: 5px; cursor: pointer; transition: background 0.3s; }
.hero button:hover { background: #c0392b; }
.services { padding: 4rem 2rem; max-width: 1200px; margin: 0 auto; }
.services h2 { text-align: center; margin-bottom: 3rem; font-size: 2.5rem; color: #2c3e50; }
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.service-item { background: #f8f9fa; padding: 2rem; border-radius: 10px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); transition: transform 0.3s; }
.service-item:hover { transform: translateY(-5px); }
.service-item h3 { color: #2c3e50; margin-bottom: 1rem; }
footer { background: #34495e; color: white; text-align: center; padding: 2rem; }