:root{--primary-blue:#004e92;--secondary-blue:#002d5a;--accent-blue:#0081c9;--text-dark:#333;--text-light:#666;--bg-gray:#f8f9fa;--border-color:#e0e0e0;--white:#fff}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-gray);color:var(--text-dark);font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none;transition:all .3s ease}ul{list-style:none}img{display:block;height:auto;max-width:100%}.container{margin:0 auto;max-width:1200px;padding:0 20px}.text-primary{color:var(--primary-blue)}.text-center{text-align:center}.font-bold{font-weight:700}.section-py{padding:60px 0}.btn{border-radius:4px;cursor:pointer;display:inline-block;font-weight:500;padding:10px 24px;transition:all .3s ease}.btn-primary{background-color:var(--primary-blue);color:var(--white)}.btn-primary:hover{background-color:var(--secondary-blue)}.glass-effect{backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);background:#fffc}.hover-lift{transition:transform .3s ease,box-shadow .3s ease}.hover-lift:hover{box-shadow:0 10px 20px #0000001a;transform:translateY(-5px)}