:root{
  --ink:#1a1c22; --ink-soft:#5a6071; --line:#e7e9ef; --bg:#f6f7f9;
  --card:#fff; --gold:#c8a24a; --gold-dk:#a07d2c;
  --green:#1f9d63; --green-bg:#e8f6ee; --red:#d1493f; --amber:#e0982a; --amber-bg:#fdf4e3;
  --blue:#3a6ea5; --blue-bg:#eaf1f8;
  --shadow:0 1px 3px rgba(20,24,40,.06),0 6px 24px rgba(20,24,40,.05);
}
*{box-sizing:border-box}
body{margin:0;font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg)}
.muted{color:var(--ink-soft)}
.hidden{display:none !important}
.num{text-align:right;font-variant-numeric:tabular-nums}

/* top bar */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:14px 28px;background:#15171e;color:#f3f0e7;box-shadow:var(--shadow)}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{font-weight:800;letter-spacing:1px;font-size:18px;
  background:linear-gradient(135deg,#e9cd86,#c8a24a 60%,#a07d2c);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  border:1.5px solid var(--gold-dk);border-radius:7px;padding:4px 9px}
.brand-title{font-weight:700;font-size:15px;letter-spacing:.2px}
.brand-sub{font-size:12px;color:#a9aab4}
.case-meta{display:flex;gap:22px;font-size:13px;flex-wrap:wrap;color:#cfd0d8}
.case-meta b{color:#fff;font-weight:600}

main{max-width:1180px;margin:22px auto;padding:0 22px;display:flex;flex-direction:column;gap:18px}

.panel{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px;box-shadow:var(--shadow)}
.panel-head h2,.tab-panel h2{margin:0 0 2px;font-size:15px}
h2{font-size:15px}

/* scenario pills */
.pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.pill{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 16px;
  cursor:pointer;font-size:13px;font-weight:600;color:var(--ink);transition:.12s;display:flex;align-items:center;gap:8px}
.pill:hover{border-color:var(--gold)}
.pill.active{background:#15171e;color:#fff;border-color:#15171e}
.pill .ptype{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;
  padding:1px 6px;border-radius:5px;background:var(--gold);color:#1a1c22}
.pill.active .ptype{background:var(--gold)}
.pill .ptype.custom{background:var(--blue);color:#fff}
.scenario-desc{margin:12px 2px 0;font-size:13px}

/* KPI cards */
.kpis{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:15px 16px;box-shadow:var(--shadow)}
.kpi .k-label{font-size:11.5px;text-transform:uppercase;letter-spacing:.4px;color:var(--ink-soft);font-weight:600}
.kpi .k-val{font-size:24px;font-weight:750;margin-top:6px;letter-spacing:-.4px}
.kpi .k-sub{font-size:12px;margin-top:2px;color:var(--ink-soft)}
.kpi.accent .k-val{color:var(--green)}
.kpi.flag .k-val{color:var(--amber)}
@media(max-width:900px){.kpis{grid-template-columns:repeat(2,1fr)}}

/* tabs */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line)}
.tab{border:none;background:none;padding:11px 16px;font-size:13.5px;font-weight:600;color:var(--ink-soft);
  cursor:pointer;border-bottom:2.5px solid transparent;margin-bottom:-1px;display:flex;align-items:center;gap:8px}
.tab:hover{color:var(--ink)}
.tab.active{color:var(--ink);border-bottom-color:var(--gold)}
.badge{background:var(--amber);color:#fff;font-size:11px;font-weight:700;border-radius:999px;padding:1px 8px;min-width:20px;text-align:center}

.tab-panel{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;box-shadow:var(--shadow)}

/* tables */
.table-tools{display:flex;align-items:center;gap:16px;margin-bottom:12px;flex-wrap:wrap}
.table-tools input[type=search]{flex:1;min-width:220px;padding:8px 12px;border:1px solid var(--line);border-radius:8px;font-size:13px}
.chk{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-soft);cursor:pointer}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:10px;max-height:560px}
table{width:100%;border-collapse:collapse;font-size:13px}
thead th{position:sticky;top:0;background:#fbfbfd;text-align:left;font-weight:600;color:var(--ink-soft);
  padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap;z-index:1}
thead th.num{text-align:right}
tbody td{padding:9px 12px;border-bottom:1px solid #f1f2f6;white-space:nowrap}
tbody tr:hover{background:#fbfaf6}
td.desc{white-space:normal;max-width:260px;color:var(--ink-soft)}
tfoot td{padding:11px 12px;font-weight:700;border-top:2px solid var(--line);background:#fbfbfd}

.tag{font-size:11px;font-weight:700;padding:2px 8px;border-radius:6px;display:inline-block}
.tag.keep{background:#eef0f4;color:#5a6071}
.tag.change{background:var(--green-bg);color:var(--green)}
.tag.new{background:var(--blue-bg);color:var(--blue)}
.tag.flag{background:var(--amber-bg);color:var(--amber)}
.tag.inc{background:#f0ecf9;color:#6b4fa0}
.pos{color:var(--green);font-weight:600}

/* callout + questions */
.callout{background:var(--amber-bg);border:1px solid #f0dcae;border-left:4px solid var(--amber);
  border-radius:8px;padding:12px 16px;font-size:13px;margin-bottom:14px}
.questions{display:flex;flex-direction:column;gap:10px}
.q-card{border:1px solid var(--line);border-left:3px solid var(--amber);border-radius:8px;padding:12px 14px;background:#fff}
.q-head{display:flex;justify-content:space-between;gap:12px;align-items:baseline;flex-wrap:wrap}
.q-sku{font-weight:700}
.q-prop{font-size:12px;color:var(--ink-soft)}
.q-reason{margin-top:6px;font-size:13px;color:var(--ink)}
.q-vol{font-size:12px;color:var(--ink-soft)}

.footnote{font-size:12px;margin:12px 2px 0}
.foot{text-align:center;padding:22px;font-size:12px}
.spin{padding:40px;text-align:center;color:var(--ink-soft)}

/* logout link in topbar */
.logout{color:#a9aab4;text-decoration:none;font-size:13px;border:1px solid #2c2f38;
  border-radius:7px;padding:5px 12px;transition:.12s;white-space:nowrap}
.logout:hover{color:#fff;border-color:var(--gold-dk)}

/* ===== login page ===== */
.login-body{background:#15171e;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.login-wrap{width:100%;max-width:380px}
.login-card{background:var(--card);border-radius:16px;padding:34px 32px 28px;
  box-shadow:0 10px 40px rgba(0,0,0,.35);display:flex;flex-direction:column;gap:14px}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:4px}
.login-title{font-size:20px;margin:6px 0 0;font-weight:700}
.login-hint{font-size:12.5px;margin:0 0 6px}
.field{display:flex;flex-direction:column;gap:6px}
.field span{font-size:12.5px;font-weight:600;color:var(--ink-soft)}
.field input{padding:11px 13px;border:1px solid var(--line);border-radius:9px;font-size:14px;transition:.12s}
.field input:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(200,162,74,.15)}
.login-btn{margin-top:6px;background:#15171e;color:#fff;border:none;border-radius:9px;
  padding:12px;font-size:14px;font-weight:650;cursor:pointer;transition:.12s}
.login-btn:hover{background:#23262f}
.login-btn:disabled{opacity:.6;cursor:default}
.login-error{background:#fdeceb;color:var(--red);border:1px solid #f3c9c5;border-radius:8px;
  padding:9px 12px;font-size:13px}
.login-foot{text-align:center;font-size:11.5px;margin-top:4px;letter-spacing:.3px}