:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#242a25;background:#f3f2ee;font-synthesis:none;--primary: #46533b;--primary-dark: #303a2a;--soft: #e7ece3;--surface: #ffffff;--border: #d9ddd5;--muted: #687068;--danger: #9d3c37;--success: #31543a}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input,select{font:inherit}.app{max-width:680px;margin:0 auto;padding:max(20px,env(safe-area-inset-top)) 18px max(28px,env(safe-area-inset-bottom))}.header{margin-bottom:18px}.brand{display:flex;align-items:center;gap:12px}.logo{width:48px;height:48px;border-radius:14px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800}h1{font-size:1.35rem;margin:0}.subtitle{color:var(--muted);margin:5px 0 0}.card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:18px;box-shadow:0 12px 32px #2a322a14}.form-grid{display:grid;gap:15px}label{display:grid;gap:7px;font-weight:650}.hint{font-size:.83rem;font-weight:400;color:var(--muted)}input,select{width:100%;border:1px solid var(--border);border-radius:12px;padding:13px 14px;background:#fff;color:#242a25;outline:none}input:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #46533b1f}.serial-row{display:grid;grid-template-columns:1fr auto;gap:9px}button{border:0;border-radius:12px;padding:13px 16px;cursor:pointer;font-weight:750}.primary{color:#fff;background:var(--primary);width:100%}.primary:hover{background:var(--primary-dark)}.secondary{background:var(--soft);color:var(--primary-dark);white-space:nowrap}button:disabled{opacity:.58;cursor:not-allowed}.status{margin-top:15px;padding:13px 14px;border-radius:12px;display:none;line-height:1.4}.status.show{display:block}.status.success{background:#e7f0e5;color:var(--success)}.status.error{background:#f9e9e7;color:var(--danger)}.status.info{background:#eef1ed;color:#424a42}.scanner{position:fixed;inset:0;z-index:20;background:#121612f0;padding:max(20px,env(safe-area-inset-top)) 16px max(20px,env(safe-area-inset-bottom));display:none;flex-direction:column}.scanner.open{display:flex}.scanner-top{display:flex;justify-content:space-between;align-items:center;color:#fff;margin-bottom:12px}.scanner video{width:100%;max-height:70vh;border-radius:18px;background:#000;object-fit:cover}.scanner-note{color:#e3e8e1;text-align:center;margin:14px 0}.close{background:#fff;color:#242a25}.install-help{margin-top:14px;color:var(--muted);font-size:.86rem;text-align:center}@media(max-width:440px){.serial-row{grid-template-columns:1fr}.secondary{width:100%}}