:root{
  --white:#fff;--bg:#f4f6fa;--soft:#f4f6fa;--soft-2:#eef1f7;
  --line:#e5e9f0;--line-2:#d5dbe6;
  --ink:#10131a;--dim:#5f6878;--dimmer:#98a1b3;
  --gold:#c58b23;--gold-btn:linear-gradient(180deg,#f0b950 0%,#dc9c2b 100%);--gold-soft:#fdf6e8;
  --red:#e0452f;--red-soft:#fdecea;--green:#17a565;--green-soft:#e9f8f1;
  --shadow-s:0 1px 2px rgba(16,19,26,0.04);
  --shadow:0 12px 32px -14px rgba(16,19,26,0.16);
}
*{box-sizing:border-box;margin:0;padding:0;}
body{background:var(--bg);color:var(--ink);font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;}
img{max-width:100%;}

/* ---------- shell ---------- */
.shell{display:flex;min-height:100vh;}
.sidebar{width:248px;flex-shrink:0;background:var(--ink);color:#fff;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;}
.sb-logo{display:flex;align-items:center;gap:11px;padding:22px 20px;border-bottom:1px solid rgba(255,255,255,.08);}
.sb-logo .mark{width:36px;height:36px;border:1.6px solid #fff;border-radius:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.sb-logo b{font-size:16px;font-weight:800;display:block;line-height:1.2;}
.sb-logo span{font-size:10px;color:#9aa2b3;letter-spacing:1px;}
.sb-nav{padding:14px;display:flex;flex-direction:column;gap:3px;flex:1;}
.sb-nav a{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:9px;font-size:13.5px;font-weight:500;color:#c3c9d6;}
.sb-nav a:hover{background:rgba(255,255,255,.06);color:#fff;}
.sb-nav a.on{background:var(--gold-btn);color:#2a1b03;font-weight:700;}
.sb-nav .grp{font-size:10.5px;text-transform:uppercase;letter-spacing:1.1px;color:#6b7284;padding:16px 14px 6px;}
.sb-foot{padding:16px;border-top:1px solid rgba(255,255,255,.08);}
.sb-foot a{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:9px;font-size:13px;color:#c3c9d6;}
.sb-foot a:hover{background:rgba(255,255,255,.06);color:#fff;}

.main{flex:1;min-width:0;}
.topbar-a{background:#fff;border-bottom:1px solid var(--line);height:64px;display:flex;align-items:center;padding:0 28px;gap:16px;position:sticky;top:0;z-index:20;}
.topbar-a h1{font-size:18px;font-weight:800;flex:1;}
.topbar-a .who{font-size:13px;color:var(--dim);}
.content{padding:26px 28px 60px;max-width:1400px;}

/* ---------- basics ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-s);}
.card-h{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line);gap:14px;flex-wrap:wrap;}
.card-h h2{font-size:16px;font-weight:700;}
.card-b{padding:22px;}

.btn{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 18px;border-radius:9px;border:1px solid var(--line);background:#fff;font-size:13.5px;font-weight:600;cursor:pointer;color:var(--ink);}
.btn:hover{border-color:var(--line-2);}
.btn.primary{background:var(--gold-btn);border:none;color:#2a1b03;box-shadow:0 10px 20px -10px rgba(220,156,43,.7);}
.btn.primary:hover{filter:brightness(1.05);}
.btn.dark{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn.danger{color:var(--red);border-color:#f2c4bc;}
.btn.danger:hover{background:var(--red-soft);}
.btn.sm{height:34px;padding:0 13px;font-size:12.5px;}
.btn.icon{width:38px;padding:0;justify-content:center;}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}

.fld{margin-bottom:16px;}
.fld label{display:block;font-size:12.5px;font-weight:600;color:var(--dim);margin-bottom:7px;}
.fld .hint{font-weight:400;color:var(--dimmer);font-size:11.5px;margin-left:6px;}
.fld input[type=text],.fld input[type=number],.fld input[type=password],.fld input[type=email],.fld input[type=tel],.fld input[type=url],.fld select,.fld textarea{
  width:100%;height:44px;border-radius:9px;border:1px solid var(--line);background:var(--soft);padding:0 13px;font-size:13.5px;outline:none;color:var(--ink);
}
.fld textarea{height:110px;padding:10px 13px;resize:vertical;}
.fld input:focus,.fld select:focus,.fld textarea:focus{border-color:var(--gold);background:#fff;}
.fld .row{display:flex;gap:10px;}
.check{display:flex;align-items:center;gap:9px;font-size:13.5px;font-weight:500;cursor:pointer;padding:10px 0;}
.check input{width:18px;height:18px;accent-color:var(--ink);}

.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow-s);}
.stat b{display:block;font-size:26px;font-weight:800;margin-bottom:4px;}
.stat span{font-size:12.5px;color:var(--dimmer);}

table{width:100%;border-collapse:collapse;}
th{text-align:left;font-size:11px;letter-spacing:.6px;text-transform:uppercase;color:var(--dimmer);font-weight:700;padding:12px 14px;border-bottom:1px solid var(--line);}
td{padding:13px 14px;font-size:13.5px;border-bottom:1px solid var(--line);vertical-align:middle;}
tr:last-child td{border-bottom:none;}
tr:hover td{background:var(--soft);}
.tthumb{width:46px;height:46px;border-radius:8px;background:var(--soft);border:1px solid var(--line);object-fit:contain;display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0;}
.tthumb img{width:100%;height:100%;object-fit:contain;}
.trow-title{display:flex;align-items:center;gap:12px;}
.muted{color:var(--dimmer);}

.badge{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:100px;font-size:11px;font-weight:700;}
.badge.gold{background:var(--gold-soft);color:#95650f;}
.badge.red{background:var(--red-soft);color:var(--red);}
.badge.green{background:var(--green-soft);color:var(--green);}
.badge.gray{background:var(--soft-2);color:var(--dim);}

.toolbar-a{display:flex;align-items:center;gap:10px;margin-bottom:18px;flex-wrap:wrap;}
.toolbar-a .sp{flex:1;}
.search-a{height:42px;border-radius:9px;border:1px solid var(--line);background:#fff;padding:0 14px;font-size:13.5px;min-width:220px;outline:none;}
.search-a:focus{border-color:var(--gold);}
.sel-a{height:42px;border-radius:9px;border:1px solid var(--line);background:#fff;padding:0 14px;font-size:13.5px;outline:none;cursor:pointer;}

.alert{border-radius:10px;padding:13px 16px;font-size:13.5px;margin-bottom:18px;display:flex;align-items:center;gap:10px;}
.alert.ok{background:var(--green-soft);color:#0e6b48;}
.alert.err{background:var(--red-soft);color:#a3301e;}

.imggrid{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:14px;}
.imgitem{position:relative;width:96px;height:96px;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:var(--soft);}
.imgitem img{width:100%;height:100%;object-fit:contain;}
.imgitem .main-flag{position:absolute;top:5px;left:5px;background:var(--ink);color:#fff;font-size:9px;font-weight:700;padding:2px 6px;border-radius:5px;}
.imgitem .rm{position:absolute;top:4px;right:4px;width:20px;height:20px;border-radius:6px;background:rgba(16,19,26,.75);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;border:none;font-size:12px;}
.imgitem .setmain{position:absolute;bottom:4px;left:4px;right:4px;background:rgba(16,19,26,.75);color:#fff;font-size:9.5px;text-align:center;padding:3px 0;border-radius:5px;cursor:pointer;border:none;}
.upload-drop{border:1.5px dashed var(--line-2);border-radius:12px;padding:22px;text-align:center;color:var(--dimmer);font-size:13px;cursor:pointer;background:var(--soft);}
.upload-drop:hover{border-color:var(--gold);color:var(--gold);}

.specs-list{display:flex;flex-direction:column;gap:10px;}
.spec-item{display:grid;grid-template-columns:1fr 1fr auto;gap:10px;align-items:center;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:10px 12px;}
.spec-item .lbl{font-size:12.5px;font-weight:600;color:var(--dim);}
.spec-item input,.spec-item select{height:38px;border-radius:7px;border:1px solid var(--line);background:#fff;padding:0 10px;font-size:13px;outline:none;}

.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(120deg,#10131a 0%,#1a1f2b 100%);}
.login-card{width:380px;background:#fff;border-radius:16px;padding:36px;box-shadow:var(--shadow);}
.login-card .sb-logo{padding:0 0 26px;border:none;color:var(--ink);}
.login-card .sb-logo .mark{border-color:var(--ink);}

@media (max-width:900px){
  .shell{flex-direction:column;}
  .sidebar{width:100%;height:auto;position:static;flex-direction:row;overflow-x:auto;}
  .sb-nav{flex-direction:row;}
  .sb-nav .grp{display:none;}
  .grid2,.grid3,.grid4{grid-template-columns:1fr;}
  .spec-item{grid-template-columns:1fr;}
}