:root{--bd:#e5e7eb;--fg:#111827;--muted:#6b7280;--bg:#f9fafb;--card:#fff;}
*{box-sizing:border-box;}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--fg);background:var(--bg);}
a{color:inherit}
.container{max-width:1100px;margin:0 auto;padding:16px;}
.nav{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:12px 16px;background:#fff;border-bottom:1px solid var(--bd);position:sticky;top:0;z-index:20}
.nav .brand{display:flex;gap:10px;align-items:center;font-weight:700}
.nav img{height:28px;width:28px;border-radius:8px;object-fit:cover}
.card{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:14px;}
.grid{display:grid;gap:12px}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
@media (max-width:900px){.grid.cols-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.grid.cols-4,.grid.cols-3,.grid.cols-2{grid-template-columns:1fr}}
.muted{color:var(--muted);font-size:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--bd);background:#fff;border-radius:10px;padding:8px 10px;cursor:pointer;text-decoration:none}
.btn.primary{background:#111827;color:#fff;border-color:#111827}
.btn.danger{background:#ef4444;color:#fff;border-color:#ef4444}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.input, textarea, select{border:1px solid var(--bd);border-radius:10px;padding:8px 10px;background:#fff;min-width:180px}
textarea{min-width:260px}
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--bd);border-radius:14px;overflow:hidden}
.table th,.table td{border-bottom:1px solid var(--bd);padding:10px;text-align:left;font-size:14px;vertical-align:top}
.table th{background:#f3f4f6}
.pill{display:inline-block;padding:2px 8px;border:1px solid var(--bd);border-radius:999px;font-size:12px;background:#fff}
.kf-float{position:fixed;right:14px;bottom:18px;display:flex;flex-direction:column;gap:10px;z-index:999}
.kf-btn{width:52px;height:52px;border-radius:999px;border:1px solid var(--bd);background:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,0,0,.08);cursor:pointer}
.kf-btn img{width:26px;height:26px}
.banner{border-radius:16px;overflow:hidden;border:1px solid var(--bd);background:#fff}
.banner img{width:100%;height:320px;object-fit:cover;display:block}
@media (max-width:560px){.banner img{height:190px}}
.prod{display:flex;flex-direction:column;gap:8px}
.prod img{width:100%;height:200px;object-fit:cover;border-radius:12px;border:1px solid var(--bd);background:#fff}
.price{font-weight:800}


/* ---- Biz sidebar layout ---- */
.layout{display:flex;min-height:100vh}
.sider{width:220px;background:#fff;border-right:1px solid var(--bd);padding:16px;display:flex;flex-direction:column;gap:10px;position:sticky;top:0;height:100vh}
.sider-brand{font-weight:900;font-size:16px}
.sider-sub{font-size:12px}
.menu{display:flex;flex-direction:column;gap:8px;margin-top:6px}
.menu-item{display:block;padding:10px 12px;border-radius:12px;color:var(--fg);text-decoration:none;border:1px solid transparent}
.menu-item:hover{background:var(--bg);border-color:var(--bd)}
.menu-item.active{background:#eef2ff;border-color:#c7d2fe;font-weight:800}
.main{flex:1;display:flex;flex-direction:column}
.topbar{background:#fff;border-bottom:1px solid var(--bd);padding:14px 18px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:5}
.content{padding:18px}

/* ---- Report cards ---- */
.report-card{min-height:420px}
.report-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.report-metrics{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}
.kv{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px;border:1px solid var(--bd);border-radius:14px;background:var(--bg);flex:1;min-width:150px}
.report-form{margin-top:10px}
.report-results{display:grid;grid-template-columns:1fr;gap:10px;margin-top:10px}