:root{
  --bg:#0b0f17; --panel:#131a29; --panel2:#0f1522; --line:#22304a;
  --text:#e6edf3; --muted:#8b98ac; --acc:#00d9ff; --green:#2ecc71;
  --red:#ff5c5c; --yellow:#ffb020; --radius:12px;
}
*{margin:0;padding:0;box-sizing:border-box}
body{background:var(--bg);color:var(--text);font:15px/1.7 "PingFang SC","Microsoft YaHei",system-ui,sans-serif}
a{color:var(--acc);text-decoration:none}
a:hover{opacity:.85}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
/* header */
.site-header{position:sticky;top:0;z-index:10;background:rgba(11,15,23,.92);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:58px}
.logo{font-size:19px;font-weight:700;color:#fff;letter-spacing:.5px;display:flex;align-items:center;gap:8px}
.logo-img{width:22px;height:22px;border-radius:50%;object-fit:cover;flex:none}
.cart-badge{display:inline-block;min-width:16px;padding:0 4px;border-radius:8px;background:var(--acc);color:#0a0e1a;font-size:11px;line-height:16px;text-align:center;margin-left:4px;font-weight:700}
.nav a{color:var(--muted);margin-left:18px;font-size:14px}
.nav a:hover{color:#fff}
.nav-mail{color:var(--muted);margin-left:18px;font-size:13px;max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:middle}
/* main */
main{padding:26px 0 60px}
.page-head h1{font-size:24px}
.page-head p{color:var(--muted);margin-top:6px}
/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:22px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:10px;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--acc);transform:translateY(-2px)}
.card-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.dname{font-family:Consolas,Menlo,monospace;font-size:17px;font-weight:600;word-break:break-all;color:#fff}
.price{font-size:22px;font-weight:700;color:var(--acc)}
.intro{color:var(--muted);font-size:13px;min-height:20px}
.card-foot{margin-top:auto}
/* badges */
.badge{display:inline-block;padding:2px 10px;border-radius:20px;font-size:12px;line-height:1.6;white-space:nowrap}
.badge.ok{background:rgba(46,204,113,.15);color:var(--green);border:1px solid rgba(46,204,113,.4)}
.badge.warn{background:rgba(255,176,32,.12);color:var(--yellow);border:1px solid rgba(255,176,32,.4)}
.badge.sold{background:rgba(255,92,92,.12);color:var(--red);border:1px solid rgba(255,92,92,.4)}
.badge.off{background:rgba(139,152,172,.15);color:var(--muted);border:1px solid rgba(139,152,172,.4)}
/* buttons */
.btn{display:inline-block;background:var(--acc);color:#04121a;font-weight:600;padding:9px 18px;border-radius:8px;border:1px solid transparent;cursor:pointer;font-size:14px;text-align:center}
.btn:hover{opacity:.9}
.btn.small{padding:5px 12px;font-size:13px}
.btn.danger{background:var(--red);color:#fff}
.btn.disabled{background:#2a3446;color:var(--muted);cursor:not-allowed}
.btn.on{outline:2px solid var(--acc)}
/* panels & forms */
.panel,.detail{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-top:22px}
.detail h1{font-size:26px;color:#fff}
.detail .price{font-size:24px;margin:6px 0}
.note{color:var(--muted);font-size:14px;margin-top:10px}
.err{color:var(--red);margin:8px 0}
.ok{color:var(--green);margin:8px 0}
.form{display:flex;flex-direction:column;gap:14px;margin-top:14px;max-width:520px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--muted)}
.form input,.form select,.form textarea{background:var(--panel2);border:1px solid var(--line);border-radius:8px;color:var(--text);padding:10px 12px;font-size:14px;outline:none}
.form input:focus,.form select:focus{border-color:var(--acc)}
.form-row{display:flex;gap:10px;flex-wrap:wrap}
.form-row input,.form-row select{flex:1;min-width:110px}
.empty-box{background:var(--panel);border:1px dashed var(--line);border-radius:var(--radius);padding:40px;text-align:center;color:var(--muted);margin-top:22px}
/* kv table */
.kv{border-collapse:collapse;margin-top:12px}
.kv td{padding:7px 14px 7px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:14px}
.kv td:first-child{width:110px}
/* admin */
.admin-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.admin-nav{display:flex;gap:8px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:18px 0}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-align:center}
.stat b{display:block;font-size:26px;color:var(--acc)}
.stat span{color:var(--muted);font-size:13px}
.table{width:100%;border-collapse:collapse;margin-top:14px;font-size:14px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.table th{background:var(--panel2);color:var(--muted);text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);font-weight:600;white-space:nowrap}
.table td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
.table tr:last-child td{border-bottom:none}
.table input,.table select{background:var(--panel2);border:1px solid var(--line);border-radius:6px;color:var(--text);padding:5px 8px;font-size:13px;max-width:100%}
.inline-form{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.chk{color:var(--muted);font-size:13px;display:flex;align-items:center;gap:4px}
.filter{display:flex;gap:8px;margin:16px 0;flex-wrap:wrap}
.admin-login{max-width:420px;margin:40px auto}
/* footer */
.site-footer{border-top:1px solid var(--line);padding:22px 0 40px;color:var(--muted);font-size:13px;text-align:center}
.site-footer p{margin:4px 0}
/* responsive */
@media (max-width:640px){
  .header-inner{height:52px}
  .nav a{margin-left:12px;font-size:13px}
  .page-head h1{font-size:20px}
  .table{display:block;overflow-x:auto;white-space:nowrap}
}