:root{color-scheme:dark;--bg:#0d141c;--panel:#151e28;--panel2:#192530;--line:#293744;--muted:#8c9caa;--soft:#bdcbd4;--text:#edf5f7;--lime:#baff6b;--lime-dim:#89d65d;--red:#f4746c;--amber:#ffbf75;--blue:#69ddd8}
*{box-sizing:border-box}
html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:'DM Sans',Inter,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:14px}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,a:focus-visible{outline:2px solid var(--lime);outline-offset:3px}a{color:inherit;text-decoration:none}button:disabled{opacity:.5;cursor:not-allowed}.app-shell{max-width:1810px;margin:0 auto;padding:0 48px}.topbar{height:78px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #27333c}.brand{display:flex;align-items:center;gap:11px;font-family:'Space Grotesk',sans-serif;font-size:26px;font-weight:700;letter-spacing:-1.6px;color:var(--lime)}.brand-white{color:#f1f8fb}.brand-mark{border:2px solid var(--lime);border-radius:6px;display:flex;gap:3px;padding:6px;height:30px;align-items:center}.brand-mark>span{height:7px;width:7px;background:#354c39;border-radius:2px}.brand-mark>span:nth-child(2){background:var(--lime)}.topbar-side{display:flex;align-items:center;gap:29px}.topbar-tag{font-size:10px;font-weight:800;letter-spacing:1.3px;color:#d3e7d0;display:flex;align-items:center;gap:9px}.status-led,.live-dot{height:7px;width:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 13px #baff6b65}.topbar-version{font-family:'Space Grotesk',sans-serif;color:#6d7d89;font-size:10px;letter-spacing:1.2px}.intro{display:flex;align-items:center;justify-content:space-between;gap:45px;padding:44px 0 38px}.intro-copy{max-width:840px}.eyebrow,.section-overline,.control-number{font-weight:800;font-size:10px;letter-spacing:1.7px;color:var(--lime)}.eyebrow{display:flex;gap:10px;align-items:center;margin-bottom:16px}.eyebrow-line{width:21px;height:2px;background:var(--lime)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(31px,3.3vw,59px);line-height:1.11;letter-spacing:-2.5px;margin:0 0 16px;font-family:'Space Grotesk',sans-serif;font-weight:700}h1 .accent-title{color:var(--lime)}.intro p{max-width:665px;color:#a3b3c0;font-size:14px;line-height:1.73;margin-bottom:0}.intro-meta{display:flex;align-items:center;gap:18px;flex-shrink:0;color:var(--lime)}.intro-meta>span{font-family:'Space Grotesk',sans-serif;font-size:74px;letter-spacing:-5px;line-height:1}.intro-meta small{font-size:10px;line-height:1.65;font-weight:800;letter-spacing:1.1px;color:#a7baaf}.meta-grid{font-size:60px;line-height:1;opacity:.23;color:var(--lime)}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 362px;align-items:start;gap:18px}.map-column,.sidebar{min-width:0}.panel{background:var(--panel);border:1px solid #2a3945;border-radius:10px;box-shadow:0 8px 25px #0000000f}.stage{overflow:hidden}.stage-bar{display:flex;justify-content:space-between;align-items:center;height:63px;padding:0 22px;background:#192530;border-bottom:1px solid #293c47}.stage-head,.stage-tools{display:flex;align-items:center;gap:13px}.stage-indicator{width:10px;height:10px;border-radius:2px;background:var(--lime)}.stage-head strong{font-size:11px;font-weight:800;letter-spacing:1.25px}.stage-sub{border-left:1px solid #41515d;padding-left:12px;font-size:10px;color:#8da0af;letter-spacing:.8px}.stage-tools{gap:9px}.mode-badge{color:var(--lime);font-size:10px;font-weight:800;letter-spacing:.7px;background:#304032;padding:8px 12px;border-radius:4px;margin-right:7px}.mode-badge.smart{background:#21453f;color:#80f7e2}.icon-btn{border:1px solid #40505c;background:#243340;color:#cfdee8;width:32px;height:32px;border-radius:5px;display:flex;align-items:center;justify-content:center}.icon-btn:hover{background:#314653}.canvas-wrap{position:relative;background:#233038;overflow:hidden}#traffic-canvas{display:block;width:100%;height:auto;aspect-ratio:4/3;cursor:crosshair}.canvas-overlay{position:absolute;background:#101b23dd;border:1px solid #ffffff26;border-radius:5px;color:#d9edee;pointer-events:none}.overlay-left{top:18px;left:18px;padding:10px 13px}.overlay-overline{color:#8aa6b1;font-size:9px;letter-spacing:1.2px;font-weight:800;margin-bottom:1px}.clock{font-family:'Space Grotesk',monospace;font-size:24px;font-weight:600;letter-spacing:1.5px}.overlay-right{top:18px;right:18px;display:flex;gap:8px;align-items:center;padding:10px 12px;font-size:9px;letter-spacing:1px;font-weight:800}.overlay-right .live-dot{width:6px;height:6px}.map-tooltip{position:absolute;left:16px;bottom:18px;width:min(320px,calc(100% - 32px));padding:11px 14px;background:#101b25f0;border:1px solid #71878788;border-radius:6px;box-shadow:0 8px 28px #0006;color:#efffff;pointer-events:none;font-size:11px;line-height:1.7}.math-panel{margin-top:14px;padding:22px 24px 8px}.math-panel h2{font-family:'Space Grotesk',sans-serif;font-size:22px;letter-spacing:-.4px;margin:6px 0 8px}.math-lead{color:#9eb1bd;font-size:13px;line-height:1.6;max-width:820px}.math-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:16px}.math-grid h3{font-size:11px;letter-spacing:1.2px;color:var(--lime);margin:0 0 8px}.math-grid p{font-size:12px;line-height:1.55;color:#c5d5de;margin:0 0 10px}.plan-line{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 4px}.plan-chip{border:1px solid #3c515c;border-radius:4px;padding:6px 8px;font-size:10px;letter-spacing:.4px;color:#d5e4ea}.plan-chip b{color:var(--lime);font-weight:700}.map-tooltip strong{font-size:12px;color:var(--lime);letter-spacing:.4px}.stage-footer{background:#192530;min-height:47px;padding:12px 19px;display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid #2d3b47}.legend{display:flex;flex-wrap:wrap;gap:17px;color:#a6bbc8;font-size:10px;letter-spacing:.2px}.legend>span{display:inline-flex;gap:6px;align-items:center}.legend-dot{display:inline-block;vertical-align:middle;height:8px;width:8px;border-radius:50%}.legend-dot.green{background:var(--lime)}.legend-dot.red{background:var(--red)}.legend-dot.orange{background:#ffac56}.legend-dot.teal{background:var(--blue)}.map-tip{font-size:9px;font-weight:800;letter-spacing:.8px;color:#718b9c;text-align:right}.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:12px}.stat-card{padding:17px 19px 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8px;border-radius:3px;font-size:9px;letter-spacing:.9px}.compare-header,.compare-row{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:5px;align-items:center}.compare-header{border-bottom:1px solid #364450;color:#8fa3af;font-size:9px;font-weight:800;letter-spacing:.6px;padding:0 0 14px}.compare-header>div:not(:first-child){text-align:center}.compare-header i{margin-right:2px}.compare-row{padding:14px 0;border-bottom:1px solid #293845}.compare-row>span{font-size:12px;font-weight:700}.compare-row small{display:block;color:#7f93a1;font-size:10px;font-weight:400;margin-top:3px}.compare-row strong{font-family:'Space Grotesk',sans-serif;font-size:18px;text-align:center;font-weight:600}.compare-row .good{color:var(--lime)}.compare-note{font-size:11px;line-height:1.6;color:#95aeb9;margin:15px 0 0}.chart-legend{display:flex;gap:11px;align-items:center;color:#a4b5bf;font-size:10px;padding-top:4px}.chart-legend>span{display:flex;align-items:center;gap:5px}.chart-line{width:14px;height:3px;border-radius:3px;display:inline-block}.chart-line.fixed{background:var(--red)}.chart-line.smart{background:var(--lime)}#history-canvas{width:100%;display:block;height:158px}.chart-axis{display:flex;justify-content:space-between;color:#7d929f;font-size:9px;letter-spacing:.7px;font-weight:800;margin-top:8px}.sidebar{display:flex;flex-direction:column;gap:12px}.control-panel{padding:25px 23px}.control-topline{display:flex;justify-content:space-between;align-items:center}.control-number{color:#667d88}.control-panel h2{font-family:'Space Grotesk',sans-serif;font-size:23px;line-height:1.26;letter-spacing:-.65px;margin:15px 0 20px}.mode-switch{display:grid;grid-template-columns:1fr 1fr;gap:8px}.mode-option{min-width:0;display:flex;align-items:center;gap:9px;padding:13px 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label{font-size:12px;font-weight:700}.slider-value{font-family:'Space Grotesk',sans-serif;font-size:23px;font-weight:600;color:var(--lime)}.slider-value small{font-size:11px;color:#9cafb9}.range-input{appearance:none;-webkit-appearance:none;display:block;width:100%;height:6px;background:linear-gradient(90deg,var(--lime) 0%,var(--lime) var(--filled,40%),#3a4b56 var(--filled,40%),#3a4b56 100%);border-radius:5px;outline:none;margin:0}.range-input::-webkit-slider-thumb{appearance:none;width:16px;height:16px;background:#e7ffc9;border:3px solid #91ce67;border-radius:50%;box-shadow:0 0 0 3px #baff6b18}.range-input::-moz-range-thumb{width:12px;height:12px;background:#e7ffc9;border:3px solid #91ce67;border-radius:50%}.range-scale{display:flex;justify-content:space-between;gap:2px;color:#768e9d;font-size:9px;letter-spacing:.3px;font-weight:800;margin-top:11px}.speed-title{margin-top:26px}.control-panel h3{font-family:'Space Grotesk',sans-serif;font-size:17px;letter-spacing:-.25px;margin:15px 0 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#30424d;cursor:pointer}.accident-symbol{display:flex;align-items:center;justify-content:center;flex-shrink:0;width:31px;height:31px;border-radius:5px;background:#423329;color:var(--amber);font-size:19px}.accident-row>span:nth-child(2){min-width:0;flex:1}.accident-row strong{font-size:11px;display:block}.accident-row small{display:block;font-size:9px;line-height:1.5;color:#90a7b2}.toggle-input{position:absolute;opacity:0;width:1px;height:1px}.switch-visual{flex-shrink:0;width:38px;height:21px;border-radius:15px;background:#405461;position:relative;transition:background .15s}.switch-visual:before{content:"";position:absolute;width:15px;height:15px;top:3px;left:3px;border-radius:50%;background:#afbfcb;transition:transform .15s}.toggle-input:checked+.switch-visual{background:#80c954}.toggle-input:checked+.switch-visual:before{transform:translateX(17px);background:#f4ffe6}.toggle-input:focus-visible+.switch-visual{outline:2px solid var(--lime);outline-offset:3px}.scenario-desc{background:#222e37;border-left:2px solid #d3a35f;border-radius:0 3px 3px 0;color:#a7b9c4;font-size:11px;line-height:1.65;padding:12px 13px;margin-top:15px}.reset-run{width:100%;margin-top:14px;padding:12px 12px;border:1px solid #40505c;border-radius:6px;background:#1b2935;color:#e7f1f6;font-size:11px;font-weight:800;letter-spacing:.8px}.reset-run:hover{border-color:var(--lime);color:var(--lime)}.info-panel{display:flex;gap:12px;padding:19px 20px}.info-symbol{color:#b6ff74;border:1px solid #83b45b;border-radius:50%;height:20px;width:20px;display:flex;align-items:center;justify-content:center;font-family:Georgia,serif;font-style:italic;flex-shrink:0}.info-panel strong{font-size:12px}.info-panel p{font-size:11px;color:#90a5b4;line-height:1.7;margin:9px 0 0}.info-panel b{color:#c8d9df}.info-divider{height:1px;background:#2e3d48;margin-top:13px}.footer{display:flex;gap:15px;justify-content:space-between;border-top:1px solid #2e3b45;padding:27px 0;margin-top:31px;color:#758b99;font-size:9px;font-weight:800;letter-spacing:1px}
@media(max-width:1350px){.app-shell{padding:0 30px}.workspace{grid-template-columns:minmax(0,1fr) 328px;gap:13px}.control-panel{padding:20px 16px}.mode-option{gap:4px;padding:11px 6px}.mode-icon{width:22px}.mode-option small{font-size:8px}.stage-footer{flex-wrap:wrap}.intro-meta .meta-grid{display:none}.lower-grid{grid-template-columns:1fr}.stat-card{padding:14px}.stat-value{font-size:34px}}
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@media(max-width:1050px){.math-grid{grid-template-columns:1fr}}
@media(max-width:750px){.app-shell{padding:0 15px}.topbar{height:64px}.topbar-version,.intro-meta,.map-tip{display:none}.intro{padding:29px 0 26px}.intro p{font-size:13px}.intro h1{letter-spacing:-1.5px}.workspace{gap:12px}.stage-bar{height:54px;padding:0 11px}.stage-head{gap:8px}.stage-sub{display:none}.mode-badge{font-size:8px;margin-right:0;padding:7px}.canvas-overlay.overlay-left{top:7px;left:7px;padding:7px}.canvas-overlay.overlay-right{top:7px;right:7px;padding:7px;font-size:7px}.clock{font-size:16px}.overlay-overline{font-size:7px}.stage-footer{padding:12px}.legend{gap:12px}.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lower-grid{grid-template-columns:1fr}.sidebar{display:flex}.footer{line-height:1.7}.footer span:last-child{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}