:root {
    --bg:#f4f6f8; --card:#fff; --text:#1f2937; --muted:#6b7280;
    --primary:#2563eb; --danger:#dc2626; --success:#059669; --warning:#d97706;
    --border:#dbe1e8;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--primary);text-decoration:none}
header{background:#111827;color:#fff;padding:14px 22px;display:flex;align-items:center;justify-content:space-between}
header a{color:#fff;margin-right:16px}
.container{max-width:1280px;margin:22px auto;padding:0 16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:18px;margin-bottom:18px;box-shadow:0 2px 10px rgba(0,0,0,.03)}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.stat{font-size:28px;font-weight:700}
.muted{color:var(--muted)}
table{width:100%;border-collapse:collapse}
th,td{padding:10px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
th{background:#f8fafc}
input,select,textarea{width:100%;padding:9px 10px;border:1px solid var(--border);border-radius:7px;background:#fff}
textarea{min-height:90px}
label{display:block;font-weight:600;margin-bottom:5px}
.field{margin-bottom:13px}
.btn{display:inline-block;border:0;border-radius:7px;padding:9px 14px;cursor:pointer;background:var(--primary);color:#fff}
.btn.secondary{background:#475569}.btn.danger{background:var(--danger)}.btn.success{background:var(--success)}
.badge{display:inline-block;padding:4px 8px;border-radius:999px;background:#e5e7eb;font-size:12px}
.badge.success{background:#d1fae5;color:#065f46}.badge.warning{background:#fef3c7;color:#92400e}.badge.danger{background:#fee2e2;color:#991b1b}
.flash{padding:12px;border-radius:7px;margin-bottom:12px}.flash.success{background:#d1fae5}.flash.error{background:#fee2e2}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.item-row{display:grid;grid-template-columns:2fr 1fr repeat(7,1fr);gap:8px;margin-bottom:8px}
.ocr-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:18px}
pre.ocr{white-space:pre-wrap;max-height:500px;overflow:auto;background:#111827;color:#e5e7eb;padding:14px;border-radius:8px}
@media(max-width:900px){.grid,.grid-2,.ocr-layout{grid-template-columns:1fr}.item-row{grid-template-columns:1fr 1fr}}
.carton-item-row{display:grid;grid-template-columns:2fr 1fr .7fr .8fr .7fr;gap:8px;margin-bottom:8px}
@media(max-width:900px){.carton-item-row{grid-template-columns:1fr 1fr}}

.product-thumb{width:80px;height:80px;object-fit:contain;border:1px solid var(--border);border-radius:6px}