:root{--bg: #f4f6fa;--card: #ffffff;--text: #111827;--muted: #627089;--line: #e3e8f2;--brand: #2d6bff}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;color:var(--text);background:radial-gradient(circle at 82% -12%,rgba(45,107,255,.16),transparent 38%),radial-gradient(circle at 8% 14%,rgba(111,183,255,.13),transparent 34%),radial-gradient(circle at 50% 120%,rgba(121,163,255,.1),transparent 40%),var(--bg);overflow-x:hidden}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:28px 28px;opacity:.3}.page{min-height:100vh;display:grid;place-items:center;padding:20px;position:relative;z-index:1}.bg-glow{position:absolute;border-radius:999px;filter:blur(50px);pointer-events:none;z-index:0}.glow-a{width:260px;height:260px;top:14%;right:10%;background:#2d6bff2e;animation:float-a 9s ease-in-out infinite}.glow-b{width:210px;height:210px;left:8%;bottom:20%;background:#72c0ff2b;animation:float-b 11s ease-in-out infinite}.download-card{position:relative;z-index:1;width:min(900px,100%);padding:30px 28px 26px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(180deg,#ffffffeb,#fff);box-shadow:0 18px 34px #0f172a14,0 2px #ffffffe6 inset;text-align:center;transition:transform .24s ease,box-shadow .24s ease}.download-card:hover{transform:translateY(-2px);box-shadow:0 24px 40px #0f172a1a,0 2px #fffffff2 inset}.brand-row{display:flex;align-items:center;justify-content:flex-start;gap:12px;width:100%}.brand-icon{width:78px;height:78px;border-radius:10px;object-fit:cover;display:block}.brand-name{font-size:36px;line-height:1;font-weight:900;letter-spacing:.01em}h1{margin:18px 0 0;font-size:clamp(28px,4vw,44px);line-height:1.15}.lead{margin:12px 0 0;color:var(--muted);font-size:clamp(15px,2vw,18px);line-height:1.65}.actions{margin-top:20px;display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:10px}.btn{display:inline-flex;align-items:center;justify-content:center;min-width:168px;padding:12px 18px;border-radius:999px;text-decoration:none;font-size:15px;font-weight:800;border:1px solid transparent;transition:transform .16s ease,box-shadow .16s ease,filter .16s ease}.btn:hover{transform:translateY(-1px) scale(1.01);filter:saturate(1.04)}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--brand),#1f4fd7);box-shadow:0 8px 18px #2d6bff47}.btn-secondary{color:#1f4fd7;background:#ebf1ff;border-color:#d9e4ff}.highlights{margin-top:18px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.highlights article{border:1px solid var(--line);border-radius:14px;background:#f9fbff;padding:12px 10px;transition:border-color .18s ease,transform .18s ease,background .18s ease}.highlights article:hover{border-color:#cfdcf4;transform:translateY(-1px);background:#f6f9ff}.highlights strong{font-size:15px}.highlights p{margin:6px 0 0;color:var(--muted);font-size:13px;line-height:1.5}@media (max-width: 860px){.download-card{padding:22px 16px 18px;border-radius:18px}.brand-icon{width:62px;height:62px}.brand-name{font-size:30px}.btn{min-width:148px;padding:10px 14px}.highlights{grid-template-columns:1fr}}@keyframes float-a{0%,to{transform:translateZ(0)}50%{transform:translate3d(-10px,8px,0)}}@keyframes float-b{0%,to{transform:translateZ(0)}50%{transform:translate3d(8px,-10px,0)}}