:root{--bg:#fff;--card:#fff;--card-border:#e2e4e9;--text:#111827;--text-muted:#4b5563;--accent:#4f46e5;--green:#16a34a;--yellow:#ca8a04;--red:#dc2626;--blue:#2563eb;--purple:#7c3aed;--cyan:#0891b2;--orange:#ea580c}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}.header{padding:20px 28px 12px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--card-border)}.header h1{font-size:22px;font-weight:700}.header h1 span{color:var(--accent)}.header .date{color:var(--text-muted);font-size:13px}.header-right{display:flex;align-items:center;gap:16px}.nav{display:flex;gap:4px;padding:12px 28px;border-bottom:1px solid var(--card-border);background:#f8f9fb}.nav button{padding:8px 18px;border:none;background:transparent;color:var(--text-muted);border-radius:6px;cursor:pointer;font-size:13px;font-weight:500;transition:all .2s}.nav button.active,.nav button:hover{background:var(--accent);color:#fff}.container{padding:20px 28px}.grid{display:grid;grid-gap:16px;gap:16px}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-1{grid-template-columns:1fr}.card{background:var(--card);border:1px solid var(--card-border);border-radius:10px;padding:18px;box-shadow:0 1px 3px rgba(0,0,0,.06)}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.card-title{font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);font-weight:600}.card-value{font-size:28px;font-weight:700;line-height:1.2}.card-sub{font-size:12px;color:var(--text-muted);margin-top:4px}.kpi-status{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px}.kpi-green{background:var(--green);box-shadow:0 0 6px var(--green)}.kpi-yellow{background:var(--yellow);box-shadow:0 0 6px var(--yellow)}.kpi-red{background:var(--red);box-shadow:0 0 6px var(--red)}.badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:600}.badge-green{background:rgba(34,197,94,.15);color:var(--green)}.badge-red{background:rgba(239,68,68,.15);color:var(--red)}.badge-yellow{background:rgba(234,179,8,.15);color:var(--yellow)}.funnel{display:flex;flex-direction:column;gap:2px;margin-top:10px}.funnel-step{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:6px;position:relative}.funnel-step .step-bar{height:32px;border-radius:4px;min-width:20px;transition:width .6s ease}.funnel-step .step-label{font-size:12px;color:var(--text-muted);min-width:120px}.funnel-step .step-value{font-size:14px;font-weight:600;min-width:70px;text-align:right}.funnel-step .step-rate{font-size:11px;color:var(--text-muted);min-width:60px}.chart-container{position:relative;height:260px;margin-top:8px}.chart-container-tall{height:320px}table{width:100%;border-collapse:collapse;font-size:13px}th{text-align:left;color:var(--text-muted);font-weight:600;font-size:11px;text-transform:uppercase;border-bottom:1px solid var(--card-border)}td,th{padding:8px 10px}td{border-bottom:1px solid #f1f3f5}tr:hover td{background:#f8f9fb}.section-title{font-size:16px;font-weight:600;margin:24px 0 12px;padding-bottom:8px;border-bottom:1px solid var(--card-border);color:#111827}.section-title:first-child{margin-top:0}.tab-content{display:none}.tab-content.active{display:block}.cohort-heatmap td{text-align:center;font-weight:600}.heat-high{background:rgba(22,163,74,.12);color:var(--green)}.heat-med{background:rgba(202,138,4,.1);color:var(--yellow)}.heat-low{background:rgba(220,38,38,.08);color:var(--red)}.trend-up{color:var(--green)}.trend-down{color:var(--red)}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;gap:16px}.loading-spinner{width:40px;height:40px;border:3px solid var(--card-border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.loading-text{color:var(--text-muted);font-size:14px}.error-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;gap:12px}.error-container button{padding:10px 24px;background:var(--accent);color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:14px}.last-updated{font-size:11px;color:var(--text-muted);padding:8px 28px;text-align:right;border-top:1px solid var(--card-border)}@media (max-width:1200px){.grid-4{grid-template-columns:repeat(2,1fr)}}@media (max-width:768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.container{padding:12px}}