*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}:root{--primary:#4586ff;--error:#ff4d29;--bg:#f4f6f8;--text:#333;--title:#222;--muted:#888;--placeholder:#ccc;--disabled:#c2c2c2;--line:#eceef2}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,sans-serif}#app{background:var(--bg);max-width:480px;min-height:100vh;margin:0 auto}.nav{height:44px;color:var(--title);z-index:10;background:#fff;justify-content:center;align-items:center;font-size:17px;font-weight:600;display:flex;position:sticky;top:0}.banner{background:var(--error);color:#fff;padding:12px 16px;font-size:14px;line-height:1.5}.banner .banner-title{font-weight:600}.hero{color:#fff;background:linear-gradient(135deg,#4586ff 0%,#6ea6ff 100%);flex-direction:column;justify-content:center;align-items:center;gap:8px;height:180px;display:flex}.hero .hero-title{letter-spacing:2px;font-size:30px;font-weight:700}.hero .hero-sub{opacity:.85;font-size:13px}.section{background:#fff;border-radius:12px;margin:12px;padding:16px}.field+.field{margin-top:16px}.field .input{border:none;border-bottom:1px solid var(--line);width:100%;color:var(--text);background:0 0;outline:none;padding:12px 2px;font-size:16px}.field .input::placeholder{color:var(--placeholder)}.field .input:focus{border-bottom-color:var(--primary)}.hint{color:var(--primary);margin-top:8px;font-size:13px}.field-err{color:var(--error);min-height:16px;margin-top:6px;font-size:13px}.btn{color:#fff;background:var(--primary);cursor:pointer;border:none;border-radius:24px;width:100%;margin-top:20px;padding:13px;font-size:16px;font-weight:600;transition:background .15s}.btn:disabled{background:var(--disabled);cursor:not-allowed}.btn.secondary{color:var(--primary);border:1px solid var(--primary);background:#fff}.loading{color:var(--primary);justify-content:center;align-items:center;gap:8px;margin-top:14px;font-size:14px;display:flex}.spinner{border:2px solid #4586ff40;border-top-color:var(--primary);border-radius:50%;width:18px;height:18px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.notes .notes-title{color:var(--text);margin-bottom:10px;font-size:15px;font-weight:600}.notes p{color:var(--muted);font-size:13px;line-height:1.9}.placeholder-block{height:88px;color:var(--placeholder);text-align:center;white-space:pre-line;background:#fff;border-radius:12px;justify-content:center;align-items:center;margin:12px;font-size:13px;display:flex}.success{text-align:center;padding:48px 20px 24px}.success .check{background:var(--primary);border-radius:50%;justify-content:center;align-items:center;width:72px;height:72px;margin:0 auto 20px;display:flex}.success .check svg{width:38px;height:38px}.success .success-title{color:var(--title);font-size:22px;font-weight:700}.success .success-sub{color:var(--muted);margin-top:10px;font-size:14px}.code-item{text-align:left;background:#fafbfe;border:1px dashed #c8d2e2;border-radius:10px;margin-top:16px;padding:14px}.code-item .name{color:var(--muted);font-size:13px}.code-row{align-items:center;gap:10px;margin-top:6px;display:flex}.code-value{word-break:break-all;color:var(--title);flex:1;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:17px;font-weight:600}.copy-btn{border:1px solid var(--primary);color:var(--primary);cursor:pointer;background:#fff;border-radius:8px;flex-shrink:0;padding:6px 12px;font-size:13px}.expire{color:var(--muted);margin-top:8px;font-size:12px}