:root{--bg: #f5f7f8;--surface: #ffffff;--surface-sunken: #edf1f3;--text: #182630;--text-muted: #576a74;--border: #d7dfe4;--border-strong: #aebfc8;--accent: #0b7285;--accent-soft: #e2f0f3;--chart-primary: #0f93aa;--chart-secondary: #667f8c;--chart-negative: #d0862c;--chart-zero: #8fa3ad;--focus-ring: #0b7285;color-scheme:light dark}@media (prefers-color-scheme: dark){:root{--bg: #0e161b;--surface: #152028;--surface-sunken: #101a21;--text: #e4ecf0;--text-muted: #9db0ba;--border: #263741;--border-strong: #3d525d;--accent: #53c6de;--accent-soft: #123741;--focus-ring: #53c6de}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,-apple-system,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.5}.app-shell{max-width:1140px;margin:0 auto;padding:20px 24px 40px}.skip-link{position:absolute;left:-9999px;background:var(--surface);color:var(--accent);padding:8px 14px;border:1px solid var(--border-strong);border-radius:8px}.skip-link:focus{left:16px;top:8px;z-index:10}:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.masthead{display:flex;align-items:center;gap:14px;padding:8px 0 18px}.wind-mark{width:44px;height:44px;flex:none}.mark-ring{fill:var(--accent-soft);stroke:var(--accent);stroke-width:2}.mark-flow{fill:none;stroke:var(--accent);stroke-width:2.6;stroke-linecap:round}.wordmark{margin:0;font-size:1.5rem;font-weight:650;letter-spacing:-.015em}.tagline{margin:2px 0 0;color:var(--text-muted);font-size:.95rem}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);flex-wrap:wrap}.tab{padding:9px 16px 10px;color:var(--text-muted);text-decoration:none;font-weight:550;border-bottom:2px solid 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12px;display:flex;flex-direction:column;gap:2px;min-width:0}.metric-label{color:var(--text-muted);font-size:.8rem}.metric-value{font-size:1.32rem;font-weight:650;font-variant-numeric:tabular-nums;letter-spacing:-.01em}.metric-note{color:var(--text-muted);font-size:.82rem;font-variant-numeric:tabular-nums}.chart-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px 20px 14px;margin-top:16px;min-width:0}.chart-card h3{margin:0;font-size:1.02rem;font-weight:650}.how-to-read{margin:4px 0 12px;color:var(--text-muted);font-size:.88rem}.meta-line{margin:0 0 12px;color:var(--text-muted);font-size:.88rem;font-variant-numeric:tabular-nums}.chart-body{height:300px;min-width:0}.chart-body-short{height:260px}.chart-key{display:flex;flex-wrap:wrap;gap:18px;margin:10px 0 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td{background:var(--accent-soft);font-weight:600}.skeleton-block{display:flex;flex-direction:column;gap:10px;padding:18px 0}.skeleton-line{display:block;height:14px;border-radius:6px;background:var(--surface-sunken);animation:skeleton-pulse 1.4s ease-in-out infinite}@keyframes skeleton-pulse{0%,to{opacity:1}50%{opacity:.55}}.w-40{width:40%}.w-60{width:60%}.w-75{width:75%}.w-90{width:90%}.error-state,.empty-state{border:1px solid var(--border-strong);border-left:3px solid var(--chart-negative);border-radius:10px;background:var(--surface);padding:14px 18px;margin:16px 0}.empty-state{border-left-color:var(--border-strong)}.state-title{margin:0;font-weight:650}.state-detail{margin:4px 0 10px;color:var(--text-muted);font-size:.9rem}.button{border:1px solid var(--border-strong);border-radius:8px;background:var(--surface);color:var(--text);padding:7px 16px;font:inherit;font-weight:600;cursor:pointer}.button:hover{background:var(--surface-sunken)}.what-if{margin:14px 0 4px;padding:12px 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solid var(--border);color:var(--text-muted);font-size:.85rem;display:flex;flex-wrap:wrap;gap:4px 24px;justify-content:space-between}.app-footer p{margin:0}@media (max-width: 640px){.app-shell{padding:12px 14px 28px}.chart-card{padding:14px 12px 12px}.chart-body,.chart-body-short{height:240px}.wordmark{font-size:1.25rem}}@media (prefers-reduced-motion: reduce){.skeleton-line{animation:none}}