:root{--bg: #0f1115;--panel: #181b22;--panel-2: #20242e;--border: #2a2f3a;--text: #e6e9ef;--muted: #9aa3b2;--accent: #5b8def;--accent-2: #3ddc97;--danger: #ef5b5b;--radius: 10px}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:var(--accent)}button{font:inherit;background:var(--accent);color:#fff;border:none;border-radius:8px;padding:8px 14px;cursor:pointer}button.secondary{background:var(--panel-2);color:var(--text);border:1px solid var(--border)}button.danger{background:var(--danger)}button:disabled{opacity:.5;cursor:default}input,select{font:inherit;background:var(--panel-2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 10px}.app-shell{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--panel);border-right:1px solid var(--border);padding:16px;display:flex;flex-direction:column;gap:6px}.sidebar h1{font-size:16px;margin:0 0 12px}.nav-link{display:block;padding:8px 10px;border-radius:8px;color:var(--muted);text-decoration:none}.nav-link.active,.nav-link:hover{background:var(--panel-2);color:var(--text)}.main{flex:1;padding:20px;min-width:0}.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.card .kpi{font-size:26px;font-weight:600}.card .label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em}.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-top:16px}.panel h2{margin:0 0 12px;font-size:15px}.infotip{position:relative;display:inline-flex;align-items:center;justify-content:center;width:15px;height:15px;margin-left:6px;border-radius:50%;border:1px solid var(--border);background:var(--panel-2);color:var(--muted);font-size:10px;font-style:italic;font-weight:700;font-family:Georgia,Times New Roman,serif;line-height:1;cursor:help;vertical-align:middle;-webkit-user-select:none;user-select:none;flex-shrink:0}.infotip:hover,.infotip:focus-visible{color:var(--text);border-color:var(--muted);outline:none}.infotip-bubble{position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%);width:max-content;max-width:260px;padding:9px 11px;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;box-shadow:0 8px 24px #00000073;color:var(--text);font-size:12px;font-style:normal;font-weight:400;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.45;letter-spacing:normal;text-transform:none;text-align:left;white-space:normal;opacity:0;visibility:hidden;transition:opacity .12s ease;pointer-events:none;z-index:60}.infotip:hover .infotip-bubble,.infotip:focus-visible .infotip-bubble{opacity:1;visibility:visible}.chart-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}.chart-grid .panel{margin-top:0}.chart-grid-wide{grid-column:1 / -1}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);font-size:13px}th{color:var(--muted);font-weight:600}td.mono,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}.filters .field{display:flex;flex-direction:column;gap:4px}.filters label{font-size:11px;color:var(--muted)}.badge{padding:2px 8px;border-radius:999px;font-size:11px;background:var(--panel-2)}.badge.invalid{background:#4a2a2a;color:#ffb4b4}.badge.valid{background:#234634;color:#9be7c4}.login-wrap{max-width:360px;margin:8vh auto}.login-wrap form{display:flex;flex-direction:column;gap:10px}.error{color:var(--danger);font-size:13px}.muted{color:var(--muted)}.center-msg{padding:40px;text-align:center;color:var(--muted)}pre.stack{background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:10px;overflow-x:auto;font-size:12px;white-space:pre-wrap}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.spacer{flex:1}.cohort-heatmap{overflow-x:auto}.cohort-heatmap table{border-collapse:separate;border-spacing:4px;width:auto}.cohort-heatmap th{font-size:11px;color:var(--muted);font-weight:600;text-align:center;padding:2px 6px 6px;border:none;white-space:nowrap}.cohort-heatmap th.row-label{text-align:left;padding-right:10px}.cohort-heatmap td{border:none;padding:0;text-align:center}.heat-cell{width:60px;height:36px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;cursor:default;transition:opacity .15s}.heat-cell:hover{opacity:.8}.cohort-heatmap .row-label-cell{font-size:11px;color:var(--muted);white-space:nowrap;padding-right:10px;text-align:left}.cohort-heatmap .size-cell{font-size:11px;color:var(--muted);text-align:center;padding:0 6px;min-width:30px}.donut-legend{display:flex;flex-direction:column;gap:8px;margin-top:8px}.donut-legend-item{display:flex;align-items:center;gap:8px;font-size:12px}.donut-legend-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.donut-legend-label{flex:1;color:var(--text)}.donut-legend-pct{color:var(--muted);font-variant-numeric:tabular-nums}.onboarding{max-width:760px;margin:4vh auto;padding:0 16px}.onboarding-hero{background:linear-gradient(160deg,var(--panel-2),var(--panel));border:1px solid var(--border);border-radius:var(--radius);padding:28px}.onboarding-hero .eyebrow{color:var(--accent-2);text-transform:uppercase;letter-spacing:.08em;font-size:11px;font-weight:700;margin:0 0 6px}.onboarding-hero h2{margin:0 0 8px;font-size:24px}.onboarding-hero p{margin:0 0 18px;max-width:56ch}.onboarding-steps{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:12px}.onboarding-step{display:flex;gap:14px;align-items:flex-start;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px}.onboarding-step h3{margin:0 0 4px;font-size:15px}.onboarding-step p{margin:0;font-size:13px}.step-num{flex:0 0 28px;height:28px;border-radius:999px;background:var(--accent);color:#0b1220;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:14px}@media (max-width: 900px){.chart-grid{grid-template-columns:1fr}}@media (max-width: 720px){.app-shell{flex-direction:column}.sidebar{width:auto;flex-direction:row;flex-wrap:wrap;border-right:none;border-bottom:1px solid var(--border)}}