:root{color-scheme:dark;--bg:#05070f;--text:#eaf0fb;--muted:#9aa9bf;--brand:#e0342c;--brand2:#ff6a3d;--line:rgba(120,150,220,.18)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;overflow-x:hidden;min-height:100vh}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit}a{color:inherit}a:focus-visible,button:focus-visible{outline:2px solid #ffae95;outline-offset:6px}[hidden]{display:none!important}
.bg-grid,.bg-glow{position:fixed;inset:0;pointer-events:none}.bg-grid{background-image:linear-gradient(rgba(90,130,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(90,130,255,.045) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse 75% 65% at 50% 40%,#000 20%,transparent 85%)}.bg-glow::before,.bg-glow::after{content:"";position:absolute;border-radius:50%;filter:blur(90px);opacity:.38}.bg-glow::before{width:500px;height:500px;left:-170px;top:-210px;background:radial-gradient(circle,#3a1d5e,transparent 65%)}.bg-glow::after{width:620px;height:620px;right:-260px;top:180px;background:radial-gradient(circle,#5e1d24,transparent 65%)}
.wrap{position:relative;width:min(1000px,calc(100% - 64px));margin:auto}.site-header{display:flex;align-items:center;justify-content:space-between;padding:32px 0}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:650;font-size:19px;letter-spacing:.2px}.logo-box{width:44px;height:44px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.12);border-radius:13px;background:rgba(255,255,255,.035)}.logo-box img{display:block;width:32px;height:32px}.header-label{font-size:13px;color:var(--muted)}
.intro{padding:64px 0 44px}.eyebrow{font-size:13px;letter-spacing:2px;color:#fa9b83}h1{font-size:clamp(32px,5vw,52px);font-weight:650;line-height:1.35;letter-spacing:-1px;margin:16px 0 18px}.intro p{font-size:16px;color:var(--muted);line-height:1.75;margin:0}.mobile-break{display:none}
.card{position:relative;border-radius:20px;padding:32px;background:linear-gradient(160deg,rgba(22,32,58,.72),rgba(10,15,30,.7));border:1px solid var(--line);overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.16)}.card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--brand),var(--brand2),transparent);opacity:.8}.download-main{display:flex;gap:22px;align-items:center}.platform-icon{display:grid;grid-template-columns:1fr 1fr;gap:4px;width:38px;height:38px;flex:0 0 38px;color:#f1f5ff}.platform-icon i{background:currentColor;border-radius:1px}.download-copy{flex:1;min-width:0}.download-copy h2{font-size:20px;font-weight:600;margin:0 0 9px}.platform{font-size:13px;line-height:1.6;color:var(--muted);margin:0}.meta{font-size:12px;line-height:1.6;color:#b0bfd3;margin:9px 0 0;overflow-wrap:anywhere}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:15px 25px;min-height:52px;border-radius:11px;white-space:nowrap;text-decoration:none;color:#fff;font-size:15px;font-weight:600;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 8px 24px rgba(224,52,44,.22),inset 0 1px 0 rgba(255,255,255,.2);transition:filter .2s ease}.btn svg{width:18px;height:18px}.btn[aria-disabled="true"]{background:#283246;color:#a4b1c4;box-shadow:none;cursor:not-allowed}.btn:not([aria-disabled="true"]):hover{filter:brightness(1.13)}.download-status{min-height:35px;display:flex;align-items:center;gap:12px;margin-top:24px;padding-top:17px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.download-status p{margin:0;line-height:1.6}.download-status button{border:0;background:none;padding:2px 0;color:#ffc5b2;cursor:pointer;text-decoration:underline;text-underline-offset:3px}.download-status button:disabled{opacity:.5;cursor:wait}
.getting-started{padding:38px 0 58px}.getting-started>h2{font-size:14px;font-weight:500;margin:0 0 25px;color:#b0bfd3}.getting-started ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;list-style:none;margin:0;padding:0}.getting-started li{display:flex;gap:14px}.step-number{font-size:12px;color:#acb9ce;font-variant-numeric:tabular-nums;flex:0 0 28px;padding-top:3px}.getting-started h3{font-size:14px;font-weight:500;margin:0 0 9px}.getting-started p{font-size:12px;color:var(--muted);line-height:1.8;margin:0}footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:18px;padding:25px 0 36px;font-size:11px;color:var(--muted)}
@media(min-height:950px) and (min-width:761px){.intro{padding-top:108px}}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}.site-header{padding:22px 0}.intro{padding:44px 0 30px}.mobile-break{display:block}.card{padding:24px}.download-main{flex-wrap:wrap;gap:18px}.btn{width:100%;margin-top:7px}.getting-started ol{grid-template-columns:1fr;gap:24px}.getting-started{padding:32px 0 38px}.getting-started h3{margin-bottom:5px}.download-status{margin-top:20px}.header-label{font-size:12px}}
@media(max-width:380px){.wrap{width:calc(100% - 32px)}.mobile-break{display:block}.card{padding:20px}footer{flex-direction:column;gap:9px}.intro p{font-size:14px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}