html,body,#app{margin:0;min-height:100%}:root{--bg-start: #0f172a;--bg-end: #1e293b;--accent: #3b82f6;--accent-hover: #2563eb}*{box-sizing:border-box;margin:0;padding:0}body{min-height:100vh;color:#333;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}#app,.page-wrap{min-height:100vh}.page-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1.5rem}.card{width:100%;max-width:22rem;text-align:center}.logo{width:5rem;height:5rem;margin:0 auto 1.5rem;background:#ffffff1a;border-radius:1rem;display:flex;align-items:center;justify-content:center;overflow:hidden}.logo img{width:100%;height:100%}h1{font-size:1.5rem;font-weight:700;margin-bottom:.5rem}.sub{color:#94a3b8;font-size:.875rem;margin-bottom:2rem}.btn{display:inline-flex;align-items:center;justify-content:center;width:100%;padding:1rem 1.5rem;border-radius:.75rem;font-weight:500;font-size:1rem;cursor:pointer;border:none;text-decoration:none;transition:transform .2s,box-shadow .2s}.btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px -5px #3b82f64d}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-primary.is-loading{pointer-events:none;cursor:wait}.btn-primary.is-loading:hover{transform:none;box-shadow:none}.btn-spinner{width:1.25rem;height:1.25rem;margin-right:.5rem;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:btn-spin .7s linear infinite}@keyframes btn-spin{to{transform:rotate(360deg)}}.btn svg{width:1.25rem;height:1.25rem;margin-right:.5rem}.ua-section{width:100%;max-width:22rem;margin-top:2rem}.ua-label{display:block;color:#94a3b8;font-size:.75rem;margin-bottom:.5rem}.ua-input{width:100%;padding:.75rem 1rem;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:.5rem;color:#e2e8f0;font-size:.75rem;font-family:ui-monospace,monospace;resize:vertical}.ua-input:focus{outline:none;border-color:var(--accent)}.ua-input--single{resize:none;height:auto;min-height:2.5rem}.footer{margin-top:3rem;color:#64748b;font-size:.75rem}.wechat-mask{position:fixed;inset:0;z-index:9999;background:#000000bf;display:none;flex-direction:column;align-items:center;justify-content:flex-start;padding:5rem 1.5rem 1.5rem}.wechat-mask-pointer{position:absolute;top:.75rem;right:1.25rem;width:3.8rem;height:3.8rem}.wechat-mask-pointer.is-bouncing{animation:pointer-bounce-y .35s ease-in-out 4 alternate}@keyframes pointer-bounce-y{0%{transform:translateY(0)}to{transform:translateY(-10px)}}.wechat-mask-pointer img{width:100%;height:100%;object-fit:contain;transform:scaleX(-1)}.wechat-mask-content{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;color:#fff;max-width:18rem;margin-bottom:0}.wechat-mask-content+.wechat-mask-content{margin-top:.4rem}.wechat-mask-content img{width:1.4rem;height:1.4rem;margin-bottom:0;flex-shrink:0}.wechat-mask-content p{font-size:1.2rem;line-height:1.6;font-weight:600}