:root{--bg: #ffffff;--text: #000000;--hint: #707579;--link: #2481cc;--button: #2481cc;--button-text: #ffffff;--card: #f4f4f5}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent}.app{max-width:560px;margin:0 auto;padding:16px 16px 88px}.card{background:var(--card);border-radius:14px;padding:16px;margin-bottom:14px}.row{display:flex;justify-content:space-between;align-items:center;padding:8px 0}.row+.row{border-top:1px solid color-mix(in srgb,var(--hint) 20%,transparent)}.label{color:var(--hint);font-size:14px}.value{font-weight:600;text-align:right}.badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:13px;font-weight:600}.badge.ok{background:#e6f4ea;color:#1a7f37}.badge.warn{background:#fdecea;color:#b3261e}button.btn{width:100%;border:0;border-radius:12px;padding:13px;font-size:16px;font-weight:600;background:var(--button);color:var(--button-text);cursor:pointer;margin-top:8px}button.btn.secondary{background:transparent;color:var(--link)}.code{word-break:break-all;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;background:var(--bg);border-radius:10px;padding:12px}.tabs{display:flex;gap:8px;margin-bottom:14px}.tabs button{flex:1;border:0;background:var(--card);color:var(--text);border-radius:10px;padding:10px;font-weight:600}.tabs button.active{background:var(--button);color:var(--button-text)}.proto-select{width:100%;padding:12px;border-radius:12px;border:1px solid color-mix(in srgb,var(--hint) 30%,transparent);background:var(--bg);color:var(--text);font-size:15px;margin-bottom:12px}.center{text-align:center;color:var(--hint);padding:40px 16px}img.qr{display:block;margin:12px auto;width:220px;height:220px;background:#fff;border-radius:12px;padding:8px}