*{box-sizing:border-box;margin:0;padding:0}body{background:#f4f6f9;font-family:Arial,Helvetica,sans-serif}.app{max-width:1100px;margin:auto}.hero{text-align:center;padding:80px 20px}.hero h1{font-size:52px}.hero h2{color:#555;margin-top:15px}.hero p{color:#666;width:70%;margin:25px auto;line-height:1.7}.hero-btn{color:#fff;cursor:pointer;background:#2563eb;border:none;border-radius:8px;padding:15px 35px;font-size:18px}.hero-btn:hover{background:#1d4ed8}.services{justify-content:center;gap:25px;margin-top:50px;padding-bottom:60px;display:flex}.card{text-align:center;background:#fff;border-radius:12px;width:300px;padding:30px;box-shadow:0 8px 25px #00000014}.card h3{margin:15px 0}.card p{color:#666;line-height:1.6}.chat-button{color:#fff;cursor:pointer;background:#2563eb;border:none;border-radius:50%;width:65px;height:65px;font-size:28px;position:fixed;bottom:30px;right:30px;box-shadow:0 6px 20px #00000040}.chat-window{background:#fff;border-radius:12px;width:350px;position:fixed;bottom:110px;right:30px;overflow:hidden;box-shadow:0 10px 35px #00000040}.chat-header{color:#fff;background:#2563eb;justify-content:space-between;align-items:center;padding:15px;display:flex}.chat-body{background:#fafafa;flex-direction:column;gap:12px;height:350px;padding:20px;display:flex;overflow-y:auto}.close-btn{color:#fff;cursor:pointer;background:0 0;border:none;font-size:20px}.user-message{color:#fff;word-wrap:break-word;background:#2563eb;border-radius:18px;align-self:flex-end;max-width:80%;padding:10px 14px}.bot-message{color:#222;word-wrap:break-word;background:#ececec;border-radius:18px;align-self:flex-start;max-width:80%;padding:10px 14px}.chat-input{background:#fff;border-top:1px solid #ddd;gap:10px;padding:12px;display:flex}.chat-input input{border:1px solid #ccc;border-radius:8px;outline:none;flex:1;padding:12px}.chat-input button{color:#fff;cursor:pointer;cursor:pointer;background:#2563eb;border:none;border-radius:8px;padding:12px 20px}.chat-input button:hover{background:#1d4ed8}.chat-body::-webkit-scrollbar{width:8px}.chat-body::-webkit-scrollbar-thumb{background:#c9c9c9;border-radius:50px}.chat-body::-webkit-scrollbar-track{background:0 0}