*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;line-height:1.6;color:#333}.container{max-width:1200px;margin:0 auto;padding:0 20px}.section{padding:60px 0}.section-title{text-align:center;font-size:2.5rem;font-weight:600;margin-bottom:1rem}.section-subtitle{text-align:center;font-size:1.1rem;color:#666;margin-bottom:3rem}.highlight{color:#ff6b35}.btn{display:inline-block;padding:12px 24px;background:#ff6b35;color:#fff;text-decoration:none;border-radius:25px;font-weight:500;transition:all .3s ease;border:none;cursor:pointer}.btn:hover{background:#e55a2b;transform:translateY(-2px)}.card{background:#fff;border-radius:12px;padding:2rem;box-shadow:0 4px 20px #0000001a;transition:transform .3s ease}.card:hover{transform:translateY(-5px)}.grid{display:grid;gap:2rem}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}@media (max-width: 768px){.section{padding:40px 0}.section-title{font-size:2rem}.container{padding:0 15px}}