body{margin:0;font-family:-apple-system,BlinkMacSystemFont,sans-serif;background:#f4f4f5;color:#18181b}header{background:#111;color:white;padding:18px;display:flex;justify-content:space-between}main{max-width:700px;margin:auto;padding:14px}section{background:white;padding:16px;margin-bottom:14px;border-radius:16px}input,select,button{width:100%;box-sizing:border-box;padding:12px;margin:6px 0;border:1px solid #ccc;border-radius:10px;font:inherit}button{background:#111;color:white;font-weight:bold}.item{padding:12px 0;border-bottom:1px solid #eee}.top{display:flex;justify-content:space-between}.stock{font-weight:bold}small{color:#666}#msg{font-size:13px}
.brand{display:inline-flex;align-items:center;gap:8px}
.brand-logo{width:32px;height:32px;object-fit:contain;border-radius:7px;background:#fff;vertical-align:middle}