*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
body{background:#060815;color:#fff}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}
.art-shell{position:relative;width:min(100%,923px);margin:0 auto;background:#060815}
.art-shell>img{width:100%;height:auto}
.hotspot{position:absolute;z-index:9;display:block;background:transparent;border-radius:18px}
.sticky{position:fixed;left:50%;bottom:12px;transform:translateX(-50%);z-index:50;width:min(720px,92%);display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;background:rgba(250,250,253,.97);color:#161827;border-radius:20px;box-shadow:0 16px 50px rgba(0,0,0,.35)}
.sticky-brand{display:flex;align-items:center;gap:10px;min-width:0}.sticky img{width:48px;height:48px;border-radius:12px}.sticky b{display:block;font-size:17px}.sticky small{display:block;color:#74798a}
.cta{display:inline-flex;align-items:center;justify-content:center;padding:13px 24px;border-radius:999px;background:linear-gradient(90deg,#ff4b9f,#7a52ff);color:#fff;font-weight:800}
.light{background:#f5f6fa;color:#171827;min-height:100vh}.topbar{background:#101426;color:white}.wrap{width:min(1080px,92%);margin:auto}
.topbar .wrap{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-size:23px;font-weight:900}.brand img{width:44px;height:44px;border-radius:12px}
.download-main{padding:42px 0 70px}.title{text-align:center;margin-bottom:28px}.title h1{font-size:38px;margin:0 0 10px}.title p{color:#777d90}
.helpbar{background:#f1ecff;border:1px solid #ddd2ff;border-radius:18px;padding:18px 20px;margin-bottom:20px;display:flex;justify-content:space-between;align-items:center;gap:15px}
.download-card{background:white;border:1px solid #e2e5ee;border-radius:22px;overflow:hidden;box-shadow:0 16px 50px rgba(35,44,75,.08)}
.tabs{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid #e5e8f1}.device-tab{border:0;background:#fafbfe;padding:20px 10px;font-size:16px;font-weight:800;cursor:pointer;color:#333}
.device-tab.active{background:white;color:#7449f2;box-shadow:inset 0 -3px #7449f2}.device-panel{padding:30px}.device-box{display:grid;grid-template-columns:120px 1fr;gap:24px;align-items:center}
.device-icon{width:110px;height:110px;border-radius:28px;background:#f0ebff;display:grid;place-items:center;font-size:50px}.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:18px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border-radius:14px;font-weight:800;border:1px solid #d8dce7;background:white}.btn.primary{color:white;background:#7249ef;border-color:#7249ef}
.contact{margin-top:24px;background:white;border:1px solid #e2e5ee;border-radius:18px;padding:22px;display:flex;justify-content:space-between;gap:16px;align-items:center}
.footer{background:#101426;color:#c4c9d9;padding:35px 0 60px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}.footer a{display:block;margin:9px 0;color:#d3d6e2}
@media(max-width:700px){.tabs{grid-template-columns:1fr 1fr}.device-box{grid-template-columns:1fr}.contact{flex-direction:column;align-items:flex-start}.footer-grid{grid-template-columns:1fr}}