:root{
  --bg:#f5f6f8; --card:#fff; --line:#e3e6ea; --ink:#1c2430; --muted:#6b7785;
  --brand:#2563eb; --brand-d:#1d4ed8; --ok:#16a34a; --warn:#d97706; --danger:#dc2626;
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink)}
header{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff;padding:18px 16px}
header h1{margin:0;font-size:22px;letter-spacing:.5px}
header p{margin:2px 0 0;opacity:.9;font-size:13px}
main{max-width:720px;margin:0 auto;padding:14px;display:flex;flex-direction:column;gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px}
.card h2{margin:0 0 10px;font-size:16px}
.hint{margin:0 0 10px;color:var(--muted);font-size:13px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.grid .full{grid-column:1/-1}
label{display:flex;flex-direction:column;font-size:13px;color:var(--muted);gap:4px}
input,select{font:inherit;padding:9px 10px;border:1px solid var(--line);border-radius:8px;color:var(--ink);background:#fff}
input:focus,select:focus{outline:2px solid var(--brand);outline-offset:0}
button{font:inherit;cursor:pointer;border:0;border-radius:8px;padding:11px 14px;background:var(--brand);color:#fff;font-weight:600}
button:hover{background:var(--brand-d)}
button.ghost{background:#eef1f5;color:var(--ink)}
button.danger{background:var(--danger)}
.mode{display:flex;gap:18px;margin-bottom:6px}
.mode .radio{display:flex;flex-direction:row;align-items:center;gap:6px;color:var(--ink);font-size:14px}
.seg{display:flex;gap:18px;margin-bottom:10px}
.seg .radio{display:flex;flex-direction:row;align-items:center;gap:6px;color:var(--ink);font-size:14px}
.grid-in{display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px;margin-bottom:10px;padding:10px;background:#f8fafc;border:1px solid var(--line);border-radius:8px}
.grid-in label{display:flex;flex-direction:column;font-size:13px;color:var(--muted);gap:4px}
.grid-in input{width:72px;padding:7px 8px}
.grid-tip{font-size:12px;color:var(--muted);align-self:center}
#file{width:100%;padding:10px 0}
.status{margin-top:8px;font-size:13px;color:var(--muted);min-height:18px}
#preview{width:100%;margin-top:10px;border-radius:8px;border:1px solid var(--line)}
.warn{background:#fff7ed;border:1px solid #fed7aa;color:var(--warn);padding:9px 10px;border-radius:8px;margin-bottom:10px;font-size:13px}
details{margin-top:10px}
summary{cursor:pointer;color:var(--brand);font-size:13px}
pre{white-space:pre-wrap;word-break:break-word;background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:10px;font-size:12px;max-height:200px;overflow:auto}
.tablewrap{overflow:auto;border:1px solid var(--line);border-radius:8px}
table{border-collapse:collapse;width:100%;font-size:12px}
th,td{border-bottom:1px solid var(--line);padding:7px 8px;text-align:left;white-space:nowrap}
th{background:#f8fafc;position:sticky;top:0}
.actions{display:flex;gap:10px;margin-top:12px}
.unit-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:480px){.unit-grid{grid-template-columns:1fr}}
.unit-card{border:1px solid var(--line);border-radius:10px;padding:10px;display:flex;flex-direction:column;gap:8px}
.unit-card{position:relative}
.unit-card .card-idx{position:absolute;top:6px;left:6px;background:var(--brand);color:#fff;font-size:12px;font-weight:600;padding:1px 7px;border-radius:10px;z-index:1}
.unit-card img{width:100%;border-radius:6px;border:1px solid var(--line);background:#0b0e13;min-height:90px;object-fit:contain}
.unit-card .grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.unit-card label{font-size:12px}
.unit-card input{padding:7px 8px}
.unit-card .save-line{display:flex;flex-direction:row;align-items:center;gap:6px;color:var(--ink);font-size:13px}
footer{text-align:center;color:var(--muted);font-size:12px;padding:18px}

/* v4 新增：产品库信息、重复编号标记 */
.product-info{margin:10px 0;padding:9px 12px;background:#eef4fb;border:1px solid #c7dbf2;border-radius:8px;font-size:13px;color:var(--ink);line-height:1.7}
.product-info b{color:var(--brand)}
.dup-tag{position:absolute;top:6px;right:6px;background:#c0392b;color:#fff;font-size:12px;font-weight:600;padding:1px 8px;border-radius:10px;z-index:1}
.dup-row td{color:#c0392b}
.dup-row td:nth-child(8){font-weight:600}
.warn{background:#fdecea;border:1px solid #f5b7b1;color:#a93226;border-radius:8px;padding:10px 12px;font-size:13px;line-height:1.7;margin:8px 0}
.warn b{color:#922b21}

/* v6 泛匹配搜索 */
.match-row{display:flex;gap:8px;margin-bottom:10px}
.match-row input{flex:1;padding:10px 12px;border:1px solid var(--line);border-radius:8px;font-size:15px;background:#fff;color:var(--ink)}
.match-row input:focus{outline:2px solid var(--brand);outline-offset:-1px}
.match-row .ghost{white-space:nowrap;padding:0 12px}
.match-list{border:1px solid var(--line);border-radius:8px;max-height:260px;overflow:auto;margin-bottom:12px;background:#fff}
.match-head{padding:8px 12px;font-size:12px;color:var(--muted);border-bottom:1px solid var(--line);position:sticky;top:0;background:#f6f8fb}
.match-item{padding:9px 12px;border-bottom:1px solid var(--line);cursor:pointer;font-size:14px;color:var(--ink);line-height:1.5}
.match-item:last-child{border-bottom:none}
.match-item:hover{background:#eef4fb}
.match-item b{color:var(--brand)}
.match-item span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.match-empty{padding:10px 12px;font-size:13px;color:#a93226}