*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:#e5e7eb;background:#0b1020}
.page{max-width:1200px;margin:24px auto;padding:0 16px}

.header h1{margin:0 0 8px;font-size:28px;color:#fff}
.subhead{color:#94a3b8;margin:0 0 16px}

.row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.row.single{grid-template-columns:1fr}

.card{background:#0f172a;border:1px solid #1f2937;border-radius:16px;padding:16px;box-shadow:0 0 0 1px #0b1327 inset}
.card h2{margin-top:0;color:#e2e8f0}
.card h3{color:#cbd5e1;margin:8px 0}
.card h4{color:#cbd5e1;margin:6px 0}

/* Preface block above treemap */
.preface{color:#e2e8f0;line-height:1.55;margin:8px 0 12px}
.preface p{margin:0 0 10px}

#stock-treemap{width:100%;height:420px;border-radius:12px;background:#0b142a;border:1px solid #1e293b;position:relative;overflow:hidden}

.controls label{display:block;margin:6px 0;color:#cbd5e1}
.controls .group{margin-bottom:14px}
.controls .scroll{max-height:420px;overflow:auto;padding-right:6px}
.controls .subgroup{padding:8px 10px;border:1px dashed #273449;border-radius:12px;margin:8px 0}

.slider-row{display:flex;align-items:center;gap:8px;margin:4px 0}
.value{min-width:84px;display:inline-block;color:#e2e8f0}
.inline{margin:4px 0 8px;color:#e2e8f0}
.muted{color:#94a3b8}
.hint{font-size:12px;color:#94a3b8;margin-top:4px}
.caption{color:#94a3b8;font-size:13px}
.caption.small{font-size:12px}
.chip{display:inline-block;width:12px;height:12px;border-radius:3px;vertical-align:middle;margin-right:6px}
.chip-blue{background:#3b82f6}

/* Small inputs in assumptions */
.controls input[type="number"]{width:72px;background:#0b142a;border:1px solid #1e293b;border-radius:8px;color:#e5e7eb;padding:6px 8px}

/* Donuts layout */
.donuts{display:flex;gap:12px;align-items:flex-start;margin-bottom:10px}
.donut-col{background:#0b142a;border:1px solid #1e293b;border-radius:12px;padding:6px 6px 10px;flex:1;text-align:center}
.center-metrics{margin-top:6px;color:#e2e8f0;font-size:12px}

.tooltip{position:absolute;pointer-events:none;background:#111827;color:#e5e7eb;border:1px solid #374151;border-radius:8px;padding:6px 8px;font-size:12px;z-index:10}

.label{font-size:12px;fill:#e2e8f0}
.treerect{stroke:#0b142a;stroke-width:2}

/* Impact list */
.impact{margin-top:10px;background:#0b142a;border:1px solid #1e293b;border-radius:12px;padding:10px}
.impact-line{margin:4px 0;color:#e2e8f0}
.impact-list{list-style:none;margin:8px 0 0 0;padding:0}
.impact-list li{display:flex;justify-content:space-between;border-bottom:1px dashed #243042;padding:6px 0}
.impact-list li:last-child{border-bottom:0}

/* Nicer scrollbars (supported browsers) */
.controls .scroll::-webkit-scrollbar{width:8px}
.controls .scroll::-webkit-scrollbar-thumb{background:#1f2a3d;border-radius:8px}
.controls .scroll::-webkit-scrollbar-track{background:transparent}

@media (max-width: 1000px){
  .row{grid-template-columns:1fr}
  #stock-treemap{height:360px}
}