:root{
  --bg:#f8f9fa;
  --card:#ffffff;
  --ink:#0b1220;
  --muted:#6b7280;
  --line:#e5e7eb;
  --accent:#1f6feb;
  --accent-dim:#dbeafe;
  --gold:#b48a2a;
  --good:#15803d;
  --warn:#d97706;
  --bad:#dc2626;
  --indigo:#3730a3;
  --shadow: 0 1px 2px rgba(15,23,42,.06), 0 4px 16px rgba(15,23,42,.04);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Inter,Segoe UI,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.45;}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code{background:#eef2ff;padding:0 4px;border-radius:3px;font-family:JetBrains Mono,Consolas,monospace;font-size:.9em}

.topbar{display:flex;justify-content:space-between;align-items:center;padding:18px 28px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.brand{display:flex;align-items:center;gap:16px}
.brand .logo{background:var(--ink);color:#fff;width:44px;height:44px;display:grid;place-items:center;border-radius:6px;font-weight:700;letter-spacing:.5px}
.brand h1{margin:0;font-size:18px;font-weight:600}
.brand h1 span{color:var(--muted);margin:0 6px}
.subtitle{color:var(--muted);font-size:12px;margin-top:2px}
.filters{display:flex;gap:14px;align-items:center}
.filters label{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}
.filters select{padding:5px 8px;border:1px solid var(--line);border-radius:4px;background:#fff;font-size:13px;cursor:pointer}
.badge{display:inline-block;padding:3px 8px;border-radius:10px;font-size:11px;background:#fef3c7;color:#92400e;font-weight:500}
.badge.ok{background:#dcfce7;color:#166534}
.badge.bad{background:#fee2e2;color:#991b1b}

.tabs{display:flex;gap:2px;background:#fff;border-bottom:1px solid var(--line);padding:0 16px}
.tabs button{background:transparent;border:0;padding:14px 18px;cursor:pointer;font-size:13px;font-weight:500;color:var(--muted);border-bottom:3px solid transparent;border-radius:0;transition:color .12s}
.tabs button.active{color:var(--ink);border-bottom-color:var(--accent)}
.tabs button:hover{color:var(--ink)}

main{padding:24px 28px;max-width:1400px;margin:0 auto}
.tab-pane{display:none;animation:fadein .25s}
.tab-pane.active{display:block}
@keyframes fadein{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}

.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:22px;margin-bottom:18px;box-shadow:var(--shadow)}
.card h2{margin:0 0 12px;font-size:15px;font-weight:600}
.card h3{margin:22px 0 10px;font-size:14px;font-weight:600;color:var(--muted)}
.muted{color:var(--muted);font-size:13px}

.kpi-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-bottom:16px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:14px;box-shadow:var(--shadow)}
.kpi .label{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.4px;font-weight:600}
.kpi .value{font-size:22px;font-weight:700;margin-top:4px;letter-spacing:-.5px}
.kpi .meta{color:var(--muted);font-size:11px;margin-top:3px}
.kpi.alert .value{color:var(--bad)}

.chart-wrap{position:relative;height:320px;margin-top:8px}
.wf-table{width:100%;border-collapse:collapse;margin-top:16px;font-size:13px}
.wf-table th,.wf-table td{padding:8px 10px;text-align:right;border-bottom:1px solid var(--line)}
.wf-table th:first-child,.wf-table td:first-child{text-align:left}
.wf-table thead th{font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);font-weight:600;background:#f8fafc}
.wf-table tbody tr:hover{background:#f1f5f9}

.region-bar,.office-bar{display:grid;grid-template-columns:1fr 90px 110px 110px;gap:10px;padding:8px 10px;border-bottom:1px solid var(--line);align-items:center;font-size:13px}
.region-bar:hover,.office-bar:hover{background:#f1f5f9;cursor:pointer}
.threat{position:relative;background:#f1f5f9;border-radius:4px;height:8px;overflow:hidden}
.threat .fill{position:absolute;left:0;top:0;bottom:0;background:linear-gradient(90deg,var(--bad),var(--warn));border-radius:4px}
.threat .fill.good{background:linear-gradient(90deg,var(--good),#86efac)}
.office-bar.rank-1{background:#fef3c7}
.office-bar.rank-1 .fill{animation:pulse 1.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.55}}

.drill-rail{position:fixed;right:0;top:80px;bottom:0;width:380px;background:#fff;border-left:1px solid var(--line);box-shadow:-4px 0 16px rgba(0,0,0,.06);transform:translateX(100%);transition:transform .25s;padding:20px;overflow-y:auto;z-index:8}
.drill-rail.open{transform:translateX(0)}
.drill-rail .close{position:absolute;top:14px;right:18px;background:transparent;border:0;font-size:18px;cursor:pointer;color:var(--muted)}
.drill-rail h3{margin-top:0}
.drill-rail dl{display:grid;grid-template-columns:1fr 1fr;gap:8px 14px;margin:14px 0}
.drill-rail dt{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.3px}
.drill-rail dd{margin:0;font-weight:600;font-size:14px}

.briefing{padding:6px 4px}
.briefing-skeleton{padding:30px;text-align:center;color:var(--muted)}
.briefing h2{font-size:17px;margin:0 0 10px}
.briefing .lede{font-size:15px;color:var(--ink);line-height:1.6}
.briefing .findings{margin-top:24px;display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.briefing .finding{background:#fafafa;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:6px;padding:14px}
.briefing .finding.high{border-left-color:var(--bad)}
.briefing .finding.med{border-left-color:var(--warn)}
.briefing .finding h3{margin:0 0 6px;font-size:13px;font-weight:600}
.briefing .finding p{margin:0;font-size:13px;color:#374151}
.briefing .finding .impact{color:var(--bad);font-weight:600;font-size:12px;margin-top:6px}

.health-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:18px}
.tier{padding:14px;background:#fafafa;border:1px solid var(--line);border-radius:8px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px}
.tier span{width:32px;height:32px;display:grid;place-items:center;border-radius:50%;color:#fff;font-weight:700;font-size:14px}
.tier-A span{background:var(--good)}
.tier-B span{background:#65a30d}
.tier-C span{background:var(--warn)}
.tier-D span{background:var(--bad)}
.tier b{font-size:20px;font-weight:700}
.tier em{font-style:normal;font-size:11px;color:var(--muted)}

#health-table,#bucket-detail table,#opp-network,#opp-band,#opp-offices{width:100%;border-collapse:collapse;font-size:13px}
#health-table th,#health-table td,#opp-network th,#opp-network td,#opp-band th,#opp-band td,#opp-offices th,#opp-offices td{padding:7px 10px;border-bottom:1px solid var(--line);text-align:right}
#health-table th:first-child,#health-table td:first-child,#opp-band th:first-child,#opp-band td:first-child,#opp-offices th:first-child,#opp-offices td:first-child{text-align:left}
#health-table thead th,#opp-network thead th,#opp-band thead th,#opp-offices thead th{font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);font-weight:600;background:#f8fafc}
.tier-pill{display:inline-block;padding:2px 8px;border-radius:10px;font-weight:600;font-size:11px}
.tier-pill.A{background:#dcfce7;color:#166534}
.tier-pill.B{background:#e0f2e2;color:#365314}
.tier-pill.C{background:#fef3c7;color:#92400e}
.tier-pill.D{background:#fee2e2;color:#991b1b}

footer{padding:16px 28px;color:var(--muted);font-size:12px;display:flex;justify-content:space-between;border-top:1px solid var(--line);background:#fff}
.methodology{background:#f8fafc}
.methodology ul{margin:6px 0;padding-left:20px}
.methodology li{margin-bottom:6px}