body{background:#f5f7fb}.app-card{max-width:720px;margin:40px auto;border:0;border-radius:18px;box-shadow:0 10px 35px rgba(0,0,0,.08)}.qr-img{max-width:260px;width:100%}.stat-card{border:0;border-radius:14px}.table-wrap{overflow-x:auto}.scanner-box{max-width:640px;margin:auto}.badge-lg{font-size:.9rem;padding:.55rem .75rem}