:root{
  --bg:#f5f2ec;
  --panel:#fffaf2;
  --line:#e3d8c8;
  --text:#231f1b;
  --muted:#766d63;
  --brand:#7d5631;
  --brand-dark:#503318;
  --ok:#256b45;
  --danger:#a33a2b;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans TC","Microsoft JhengHei",Arial,sans-serif;line-height:1.55}
a{color:var(--brand-dark);text-decoration:none}
.topbar{position:sticky;top:0;z-index:2;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:14px 28px;background:rgba(255,250,242,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.brand{font-weight:800;letter-spacing:.04em}
nav{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
nav a,.topbar button,.button{border:1px solid var(--line);background:#fff;padding:8px 12px;border-radius:999px;cursor:pointer;font:inherit}
.button,.topbar button[type=submit]{background:var(--brand);border-color:var(--brand);color:#fff}
.button.secondary{background:#fff;color:var(--brand-dark)}
.button.small{padding:6px 10px}
.inline{display:inline}
.link-button{appearance:none;border:0;background:transparent;color:var(--brand-dark);padding:0;cursor:pointer;font:inherit}
.danger-link{color:var(--danger)}
.user-chip{font-size:13px;color:var(--muted)}
.container{max-width:1180px;margin:0 auto;padding:28px}
.hero,.panel{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:0 12px 32px rgba(80,51,24,.06)}
.grid{display:grid;gap:16px}
.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.metric{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}
.metric b{display:block;font-size:28px;margin-top:4px}
.toolbar{display:flex;justify-content:space-between;gap:14px;align-items:center;margin:20px 0}
.filters{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:0 0 16px}
.filters input,.filters select{width:auto;min-width:180px}
.filters input[type=search]{min-width:280px}
.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:18px}
table{width:100%;border-collapse:collapse;min-width:760px}
th,td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font-size:13px;color:var(--muted);background:#fffbf5}
tr:last-child td{border-bottom:0}
.form-panel{max-width:760px;background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:24px}
form p{display:grid;gap:6px;margin:0 0 14px}
label{font-weight:700}
input,select,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:12px;background:#fff;font:inherit}
textarea{resize:vertical}
.helptext{font-size:13px;color:var(--muted)}
.errorlist{color:var(--danger);margin:6px 0;padding-left:18px}
.messages{display:grid;gap:8px;margin-bottom:18px}
.message{padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line)}
.message.success{border-color:#b9d8c6;color:var(--ok)}
.message.error{border-color:#e1b3aa;color:var(--danger)}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}
.product-card img,.thumb{width:100%;aspect-ratio:4/3;object-fit:cover;background:#eee5d8}
.product-card .body{padding:14px}
.muted{color:var(--muted)}
.status{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:3px 9px;font-size:13px;background:#fff}
.low{color:var(--danger);font-weight:700}
.actions{display:flex;gap:8px;flex-wrap:wrap}
@media(max-width:760px){
  .topbar{align-items:flex-start;flex-direction:column;padding:12px 16px}
  .container{padding:18px}
  .grid.two,.grid.three,.grid.four{grid-template-columns:1fr}
  .toolbar{align-items:flex-start;flex-direction:column}
  .filters input,.filters select,.filters input[type=search]{width:100%;min-width:0}
}