body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;background:#f0f2f5;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}#root{width:100%;display:flex;align-items:center;justify-content:center;min-height:100vh}*{margin:0;padding:0;box-sizing:border-box}body{background:#f0f2f5;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.container{min-height:100vh;display:flex;align-items:center;justify-content:center}.card{background:#fff;border-radius:16px;padding:48px 56px;text-align:center;box-shadow:0 4px 24px #00000014;min-width:320px}.icon{font-size:64px;margin-bottom:20px}h1{font-size:28px;color:#1a1a2e;margin-bottom:12px}p{color:#888;font-size:15px;margin-bottom:32px}.download-btn{background:#1677ff;color:#fff;border:none;border-radius:8px;padding:14px 36px;font-size:16px;cursor:pointer;transition:background .2s,transform .1s}.download-btn:hover{background:#0958d9}.download-btn:active{transform:scale(.97)}.guide-overlay{position:fixed;inset:0;background:#000000bf;z-index:999;display:flex;flex-direction:column;align-items:flex-end;padding-top:12px;padding-right:16px}.guide-arrow{width:0;height:0;border-left:10px solid transparent;border-right:10px solid transparent;border-bottom:14px solid white;margin-right:8px}.guide-box{background:#fff;border-radius:12px;padding:20px 24px;max-width:260px;text-align:center}.guide-icon{font-size:36px;margin-bottom:10px}.guide-text{color:#333;font-size:15px;line-height:1.8;white-space:pre-line;margin-bottom:14px!important}.guide-close{display:inline-block;color:#999;font-size:13px;border-top:1px solid #f0f0f0;padding-top:10px;width:100%}