:root{--teal: #0f6e56;--teal-dark: #04342c;--bg: #f7f6f2;--surface: #ffffff;--text: #1d1d1b;--muted: #6b6b66;--border: #e6e4dc;--danger: #a32d2d;--radius: 14px}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}.screen{max-width:560px;margin:0 auto;padding:20px 16px calc(20px + env(safe-area-inset-bottom));min-height:100vh}.screen--center{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:12px}h1{font-size:24px;margin:8px 0}h2{font-size:16px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:24px 0 8px}.muted{color:var(--muted);margin:0}.hint{color:var(--muted);font-size:13px;margin:0}.error{color:var(--danger);font-weight:500}.brand{font-weight:700;font-size:20px;color:var(--teal);letter-spacing:-.02em}.brand--sm{font-size:16px}.code-form{display:flex;flex-direction:column;gap:12px;width:100%;max-width:320px}.code-input{font-size:28px;text-align:center;letter-spacing:.18em;padding:16px;border:2px solid var(--border);border-radius:var(--radius);text-transform:uppercase;background:var(--surface)}.code-input:focus{outline:none;border-color:var(--teal)}.btn{font-size:16px;font-weight:500;padding:14px 18px;border-radius:var(--radius);border:none;cursor:pointer}.btn--primary{background:var(--teal);color:#fff}.btn--primary:disabled{opacity:.6}.btn--ghost{background:transparent;color:var(--teal);border:1px solid var(--border)}.btn--add{width:40px;height:40px;border-radius:50%;background:var(--teal);color:#fff;font-size:22px;line-height:1}.topbar{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:8px}.product-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.product{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px}.product--out{opacity:.55}.product__info{display:flex;flex-direction:column;gap:2px}.product__title{font-weight:500}.product__price{color:var(--muted);font-size:14px}.badge--out{font-size:13px;color:var(--danger);font-weight:500}.stepper{display:flex;align-items:center;gap:12px}.stepper__btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--teal);background:var(--surface);color:var(--teal);font-size:20px;line-height:1;cursor:pointer}.stepper__qty{min-width:20px;text-align:center;font-weight:500}.footer-spacer{height:88px}.checkout-bar{position:fixed;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px calc(14px + env(safe-area-inset-bottom));background:var(--surface);border-top:1px solid var(--border);max-width:560px;margin:0 auto}.checkout-bar__summary{font-size:15px}.qr-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;display:flex;align-items:center;justify-content:center;min-height:320px;min-width:320px}.qr-img{width:288px;height:288px;image-rendering:pixelated}.qr-summary{font-size:15px}