*{box-sizing:border-box}:root{font-family:Arial,Helvetica,sans-serif;color:#111827;background:#eef2f7}body{margin:0;min-height:100vh}button,input{font:inherit}button{cursor:pointer}.app-shell{width:min(100%,720px);margin:0 auto;padding:24px 16px 48px}header{margin-bottom:20px}.eyebrow{margin:0 0 4px;font-size:.85rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}h1{margin:0;font-size:clamp(2rem,8vw,3.5rem)}.panel{background:#fff;border-radius:18px;padding:22px;box-shadow:0 10px 30px rgba(17,24,39,.1)}label{display:block;margin:18px 0 7px;font-weight:700}input{width:100%;min-height:58px;border:2px solid #cbd5e1;border-radius:12px;padding:10px 14px;font-size:1.2rem}input:focus{border-color:#2563eb;outline:3px solid rgba(37,99,235,.18)}.mode-toggle{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:20px;padding:5px;border-radius:14px;background:#e2e8f0}.mode-button{min-height:46px;border:0;border-radius:10px;background:transparent;color:#475569;font-weight:700}.mode-button.active{background:#fff;color:#111827;box-shadow:0 2px 8px rgba(15,23,42,.12)}.barcode-input{min-height:76px;font-size:1.55rem;font-weight:700;text-align:center}button{min-height:54px;border:0;border-radius:12px;padding:12px 18px;font-weight:700}.primary-button{width:100%;margin-top:12px;background:#111827;color:#fff}.secondary-button{width:100%;margin-top:18px;background:#e2e8f0;color:#111827}.hidden{display:none}.result-box{white-space:pre-line;min-height:150px;margin-top:18px;border-radius:16px;padding:20px;display:flex;align-items:center;justify-content:center;text-align:center;font-size:clamp(1.3rem,5vw,2rem);font-weight:800}.result-box.neutral{background:#e2e8f0;color:#334155}.result-box.eligible{background:#dcfce7;color:#166534}.result-box.ineligible{background:#fee2e2;color:#991b1b}.result-box.error{background:#fef3c7;color:#92400e}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}.stats div{border-radius:12px;padding:14px 8px;background:#f1f5f9;text-align:center}.stats span,.stats strong{display:block}.stats span{font-size:.8rem;font-weight:700}.stats strong{margin-top:5px;font-size:1.8rem}@media(max-width:520px){.stats{grid-template-columns:1fr}}