body{color:#1f2328;background:#f5f6f8;margin:0;font-family:system-ui,sans-serif}main{max-width:480px;margin:0 auto;padding:16px}nav{gap:12px;margin-bottom:16px;display:flex}nav a{color:#0b57d0;font-weight:600}h1{font-size:1.5rem}.khung-quet{width:100%;margin-bottom:12px}.nhap-tay{gap:8px;margin-bottom:12px;display:flex}.nhap-tay input{flex:1;padding:10px;font-size:1rem}button{background:#fff;border:1px solid #c7ccd1;border-radius:6px;padding:10px 16px;font-size:1rem}button.xac-nhan{color:#fff;background:#1a7f37;border-color:#1a7f37;width:100%;margin:8px 0;font-weight:600}.thong-tin-xe{background:#fff;border-radius:6px;grid-template-columns:max-content 1fr;gap:4px 12px;padding:12px;display:grid}.thong-tin-xe dt{color:#59636e}.thong-tin-xe dd{margin:0;font-weight:600}.loi{color:#cf222e;font-weight:600}.canh-bao{color:#9a6700}.thanh-cong{color:#1a7f37;font-weight:600}.danh-sach-qr{gap:16px;padding:0;list-style:none;display:grid}.danh-sach-qr li{background:#fff;border-radius:6px;flex-direction:column;align-items:center;padding:12px;display:flex}footer{color:#59636e;margin-top:24px;font-size:.85rem}