*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}:root{--primary-color: #2d5d87;--secondary-color: #3a7ca5;--accent-color: #59c3c3;--text-color: #333;--light-bg: #f9f9f9;--dark-bg: #2a2a2a;--light-text: #fff}html{scroll-behavior:smooth}body{color:var(--text-color);line-height:1.6}.container{width:90%;max-width:1200px;margin:0 auto;padding:0 15px}section{padding:80px 0}.section-title{text-align:center;margin-bottom:50px;font-size:2.5rem;color:var(--primary-color);position:relative}.section-title:after{content:"";position:absolute;bottom:-10px;left:50%;transform:translate(-50%);width:80px;height:4px;background-color:var(--accent-color)}.btn{display:inline-block;padding:12px 30px;background-color:var(--primary-color);color:var(--light-text);text-decoration:none;border-radius:5px;transition:all .3s ease;border:none;cursor:pointer;font-weight:600}.btn:hover{background-color:var(--secondary-color);transform:translateY(-3px);box-shadow:0 5px 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rotateY(-6deg) translateY(-4px);padding:24px 18px 20px}.nf-404-back,.nf-404-front{font-size:72px}.nf-404-front{margin-top:-66px}.nf-message{font-size:18px}.nf-sub{font-size:14px}}