*{margin:0;padding:0;box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont;background:#f5f7fb;color:#1f2d3d;overflow-x:hidden}.logo{text-align:center;padding:15px;font-weight:600;color:#4f8dfd;font-size:24px}.notice-container{position:relative;max-width:1100px;margin:10px auto}.notice{background:#ffecec;padding:20px;border-radius:12px;color:#d33;line-height:1.7;position:relative}.notice-close{position:absolute;top:10px;right:10px;background:none;border:none;font-size:20px;cursor:pointer;color:#d33}.hero{max-width:1100px;margin:20px auto;padding:40px;border-radius:20px;background:radial-gradient(circle at 20% 50%,rgba(255,255,255,.5),transparent 60%),radial-gradient(circle at 80% 30%,rgba(255,255,255,.4),transparent 60%),#e9edf5;display:flex;justify-content:space-between;align-items:center}.hero-left{max-width:480px}.hero-left h1{font-size:34px}.hero-left p{line-height:1.8;font-weight:600}.card{background:#163d6b;color:#fff;padding:20px;border-radius:12px;margin-top:20px}.downloads{display:flex;gap:18px;margin-top:25px}.circle-btn{width:78px;height:78px;border-radius:50%;border:2px solid #4f8dfd;display:flex;align-items:center;justify-content:center;flex-direction:column;font-size:12px;cursor:pointer;transition:.3s;text-decoration:none;color:inherit}.circle-btn:hover{background:#4f8dfd;color:#fff;text-decoration:none}.circle-btn i{font-size:24px;margin-bottom:5px}.banner{max-width:1100px;margin:30px auto;padding:40px;border-radius:20px;background:radial-gradient(#60a5fa 1px,transparent 1px),linear-gradient(135deg,#dbeafe,#e0f2fe);background-size:10px 10px,cover;text-align:center}.banner button{background:#4f8dfd;color:#fff;border:none;padding:12px 30px;border-radius:25px;font-size:16px;cursor:pointer;transition:.3s}.banner button:hover{background:#3b7bfd;transform:translateY(-2px)}.highlight{background:#ffd54f;padding:3px 6px}.features{max-width:1100px;margin:40px auto}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.item{background:#f1f3f7;padding:30px;border-radius:12px;text-align:center;transition:.3s;display:flex;flex-direction:column;align-items:center}.item i{font-size:40px;margin-bottom:15px}.item:hover{transform:translateY(-5px)}.download-list{max-width:1100px;margin:40px auto}.download-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.download-item{background:#fff;padding:25px;border-radius:10px;display:flex;justify-content:space-between;cursor:pointer;align-items:center;box-shadow:0 2px 8px #0000001a;text-decoration:none;color:inherit}.download-item:hover{text-decoration:none;color:inherit}.download-item i{font-size:24px;margin-right:10px;color:#4f8dfd}.download-item-content{display:flex;align-items:center}.footer{background:#0b2a4a;color:#fff;text-align:center;padding:40px}@media(max-width:768px){.hero{flex-direction:column;text-align:center;padding:20px}.hero img{max-width:100%;height:auto;border-radius:20px;margin-top:20px;margin-bottom:20px}.downloads{justify-content:center}.grid{grid-template-columns:repeat(2,1fr)}.download-grid{grid-template-columns:1fr;gap:10px}.notice-container{position:fixed;bottom:0;left:0;right:0;margin:0;z-index:1000;max-width:100%;max-height:50vh;overflow-y:auto}.notice{border-radius:0;max-height:50vh;overflow-y:auto}}