.bgc-archive-card{display:grid;grid-template-columns:minmax(280px,.92fr) minmax(0,1.08fr);border-bottom:1px solid var(--ink)}
.bgc-archive-card>div{padding:46px 0 50px 52px}.bgc-archive-card h3{margin:0;font-size:clamp(2.2rem,4vw,4.5rem);line-height:1.05;letter-spacing:-.055em}.bgc-archive-card>div>p:not(.feature-kicker){max-width:620px;margin:26px 0 0;color:var(--sub);font-size:17px;line-height:1.7}
.bgc-card-art{position:relative;display:block;min-height:390px;overflow:hidden;border-right:1px solid var(--ink);background:#263d31}.bgc-art-road{position:absolute;top:0;bottom:0;left:45%;width:25%;transform:skewX(-15deg);background:#343d3b;border-left:7px solid #eef3e7;border-right:7px solid #eef3e7}.bgc-art-road::after{content:"";position:absolute;left:50%;top:0;bottom:0;border-left:3px dashed #e3dc72}.bgc-art-light{position:absolute;z-index:1;display:grid;place-items:center;width:76px;height:76px;border:9px solid #101d18;border-radius:50%;box-shadow:9px 9px 0 #101d18}.bgc-art-green{top:20%;left:24%;background:#caff3d}.bgc-art-red{right:16%;bottom:20%;background:#fd604f}.bgc-art-arrow{position:absolute;top:47%;left:51%;font-size:76px;line-height:1;color:#caff3d;transform:rotate(-16deg)}.bgc-card-art small{position:absolute;bottom:24px;left:24px;padding:9px 12px;background:var(--acid);color:var(--ink);font-size:14px;font-weight:850}
.bgc-essay{max-width:1280px;margin:auto;padding:0 28px}.bgc-hero{max-width:1050px;margin:auto;padding:82px 0 50px}.bgc-hero h1{max-width:960px;margin:0;font-size:clamp(3.5rem,8vw,7.6rem);letter-spacing:-.07em;line-height:1.03}.bgc-abstract{display:grid;grid-template-columns:100px 1fr;gap:25px;max-width:870px;margin:50px 0 0;padding:25px 0;border-top:2px solid var(--ink);border-bottom:1px solid var(--ink)}.bgc-abstract span{color:var(--blue);font-size:11px;font-weight:850;letter-spacing:.1em}.bgc-abstract p{margin:0;font-size:clamp(1.3rem,2.4vw,1.8rem);font-weight:650;line-height:1.55}.bgc-hero-meta{display:flex;gap:30px;margin-top:28px;font-size:12px;font-weight:800}.bgc-hero-meta a{color:var(--blue)}
.bgc-diagram{max-width:1050px;margin:10px auto 75px;padding:0}.bgc-diagram-road{position:relative;display:flex;align-items:center;justify-content:space-around;height:180px;border:2px solid var(--ink);background:linear-gradient(90deg,#283a33 0 15%,#3a4540 15% 85%,#283a33 85% 100%)}.bgc-diagram-road::after{content:"";position:absolute;top:50%;left:14%;right:14%;border-top:3px dashed #dadb9d}.bgc-diagram-signal{z-index:1;display:grid;place-items:center;width:75px;height:75px;border:9px solid #111;border-radius:50%;font-size:43px;line-height:1;color:#111}.bgc-diagram-signal.green{background:#caff3d}.bgc-diagram-signal.red{background:#ff6351}.bgc-diagram-flow{z-index:1;padding:0 16px;background:#3a4540;color:#f3f0e8;font-size:35px;letter-spacing:.3em}.bgc-diagram figcaption{padding:12px 0;border-bottom:1px solid var(--rule);color:var(--sub);font-size:11px;line-height:1.5}
.bgc-reading{display:grid;grid-template-columns:250px minmax(0,740px);gap:70px;justify-content:center;max-width:1100px;margin:auto;padding:20px 0 80px}.bgc-reading aside{position:sticky;top:110px;align-self:start}.bgc-reading aside>p{margin:0 0 14px;color:var(--blue);font-size:11px;font-weight:850;letter-spacing:.1em}.bgc-reading aside ol{margin:0;padding:0;list-style:none;border-top:1px solid var(--ink)}.bgc-reading aside li{border-bottom:1px solid var(--rule)}.bgc-reading aside a{display:flex;gap:12px;padding:10px 0;font-size:12px;line-height:1.45}.bgc-reading aside a span{color:var(--blue);font-size:10px;font-weight:850}.bgc-reading aside a:hover{color:var(--blue)}
.bgc-prose{min-width:0;font-size:18px;line-height:1.88;overflow-wrap:anywhere}.bgc-prose h2{margin:3.1em 0 .85em;padding-top:12px;border-top:2px solid var(--ink);font-size:clamp(1.7rem,3vw,2.45rem);line-height:1.25;letter-spacing:-.035em;scroll-margin-top:100px}.bgc-prose h2:first-child{margin-top:0}.bgc-prose p{margin:0 0 1.25em}.bgc-prose ul,.bgc-prose ol{margin:0 0 1.55em;padding-left:1.6em}.bgc-prose li{padding-left:.2em;margin:.25em 0}.bgc-prose li::marker{color:var(--blue);font-weight:800}.bgc-prose strong{font-weight:800}.bgc-end-nav{display:flex;justify-content:space-between;gap:20px;max-width:1060px;margin:0 auto 100px;padding:22px 0;border-top:2px solid var(--ink);font-size:14px;font-weight:800}.bgc-end-nav a:hover{color:var(--blue)}
@media(max-width:900px){.bgc-archive-card{grid-template-columns:1fr}.bgc-card-art{border-right:0;border-bottom:1px solid var(--ink)}.bgc-archive-card>div{padding:38px 0}.bgc-reading{grid-template-columns:minmax(0,740px)}.bgc-reading aside{position:static}.bgc-reading aside ol{columns:2;column-gap:30px}.bgc-reading aside li{break-inside:avoid}}
@media(max-width:620px){.bgc-essay{padding:0 18px}.bgc-hero{padding:54px 0 38px}.bgc-hero h1{font-size:clamp(2.7rem,12vw,4.3rem)}.bgc-abstract{grid-template-columns:1fr;gap:12px;margin-top:35px}.bgc-abstract p{font-size:1.24rem}.bgc-hero-meta{flex-wrap:wrap}.bgc-diagram{margin-bottom:45px}.bgc-diagram-road{height:130px}.bgc-diagram-signal{width:58px;height:58px;border-width:7px;font-size:30px}.bgc-diagram-flow{font-size:18px;letter-spacing:.1em}.bgc-reading{gap:35px}.bgc-reading aside ol{columns:1}.bgc-prose{font-size:17px}.bgc-prose h2{font-size:1.8rem}.bgc-end-nav{flex-direction:column}.bgc-card-art{min-height:280px}.bgc-archive-card h3{font-size:2.3rem}}
.traffic-sim{max-width:1120px;margin:8px auto 80px;border:2px solid var(--ink);background:var(--white);box-shadow:9px 9px 0 var(--ink)}
.traffic-sim-head{display:grid;grid-template-columns:minmax(0,1fr) 245px;gap:38px;align-items:end;padding:30px 32px;border-bottom:2px solid var(--ink)}.traffic-sim-eyebrow{margin:0 0 12px;color:var(--blue);font-size:10px;font-weight:850;letter-spacing:.12em}.traffic-sim-head h2{max-width:700px;margin:0;font-size:clamp(1.8rem,3.3vw,3rem);line-height:1.1;letter-spacing:-.045em}.traffic-sim-intro{max-width:720px;margin:15px 0 0;color:var(--sub);font-size:14px;line-height:1.65}.traffic-sim-controls{display:grid;gap:9px}.traffic-sim-mode{display:block;color:var(--blue);font-size:11px;font-weight:850}.traffic-sim-toggle{width:100%;padding:13px 15px;border:2px solid var(--ink);background:var(--acid);color:var(--ink);font:800 13px var(--font);text-align:left;cursor:pointer;box-shadow:4px 4px 0 var(--ink)}.traffic-sim-toggle:hover{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}.traffic-sim[data-mode="coordinated"] .traffic-sim-toggle{background:var(--blue);color:white}.traffic-sim-secondary{display:flex;gap:8px}.traffic-sim-secondary button{flex:1;padding:8px 10px;border:1px solid var(--ink);background:var(--white);font:700 11px var(--font);cursor:pointer}.traffic-sim-secondary button:hover{background:var(--paper)}
.traffic-sim-stage{background:#263830}.traffic-sim-map{overflow-x:auto}.traffic-sim-map svg{display:block;width:100%;height:auto;min-width:720px}.sim-ground{fill:#253930}.sim-map-road{fill:none;stroke:#6a8476;stroke-width:7;stroke-linecap:round;stroke-linejoin:round}.sim-map-road.major{stroke:#9caf9f;stroke-width:13}.sim-route{fill:none;stroke-width:8;stroke-linecap:round;stroke-linejoin:round}.sim-route.left_turn{stroke:#d1fc52}.sim-route.signal_pair{stroke:#ffb885}.sim-light{stroke:#101914;stroke-width:4;fill:#ff6656}.sim-light.is-green{fill:#caff3d}.sim-light.is-red{fill:#ff6656}.sim-car{stroke:#142019;stroke-width:1.5}.sim-car.left_turn{fill:#e7ff91}.sim-car.signal_pair{fill:#ffd0a8}.sim-road-label,.sim-street-label,.sim-route-label,.sim-north{fill:#f9fff2;font-family:var(--font);font-weight:850;paint-order:stroke;stroke:#18271e;stroke-width:4;stroke-linejoin:round}.sim-road-label{font-size:20px}.sim-street-label{font-size:16px}.sim-route-label{font-size:15px}.sim-route-label.left{fill:#d1fc52}.sim-route-label.pair{fill:#ffb885}.sim-north{font-size:14px}
.traffic-sim-map-meta{display:flex;flex-wrap:wrap;gap:12px 22px;padding:11px 22px;border-top:1px solid #6a8476;color:#eaf2e5;font-size:11px;font-weight:700}.traffic-sim-map-meta span{display:flex;align-items:center;gap:7px}.traffic-sim-map-meta i{display:inline-block;width:19px;height:5px}.sim-key-left{background:#d1fc52}.sim-key-pair{background:#ffb885}.traffic-sim-stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #6a8476}.traffic-sim-stats>div{min-width:0;padding:16px 22px;color:#fff}.traffic-sim-stats>div+div{border-left:1px solid #6a8476}.traffic-sim-stats span{display:block;min-height:2.3em;color:#ceddd0;font-size:11px;line-height:1.25}.traffic-sim-stats strong{display:block;margin-top:7px;color:#d1fc52;font-size:23px;font-weight:850}.traffic-sim-stats b{font:inherit}
.traffic-sim-explain{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--rule)}.traffic-sim-explain>div{display:flex;flex-direction:column;gap:8px;min-width:0;padding:22px 24px}.traffic-sim-explain>div+div{border-left:1px solid var(--rule)}.traffic-sim-explain strong{font-size:12px}.traffic-sim-explain span{color:var(--sub);font-size:12px;line-height:1.5}.traffic-sim-explain small{margin-top:auto;color:var(--blue);font-size:11px;font-weight:800}.traffic-sim-note{margin:0;padding:18px 24px;color:var(--sub);font-size:11px;line-height:1.65}.traffic-sim-note a{color:var(--blue);text-decoration:underline;text-underline-offset:2px}
@media(max-width:800px){.traffic-sim-head{grid-template-columns:1fr;gap:20px}.traffic-sim-controls{max-width:310px}.traffic-sim-explain{grid-template-columns:1fr}.traffic-sim-explain>div+div{border-left:0;border-top:1px solid var(--rule)}.traffic-sim-stats{grid-template-columns:repeat(2,1fr)}.traffic-sim-stats>div:nth-child(3){border-left:0;border-top:1px solid #6a8476}.traffic-sim-stats>div:nth-child(4){border-top:1px solid #6a8476}}
@media(max-width:620px){.traffic-sim{margin:8px 0 55px;box-shadow:5px 5px 0 var(--ink)}.traffic-sim-head{padding:23px 18px}.traffic-sim-head h2{font-size:1.8rem}.traffic-sim-map svg{min-width:660px}.traffic-sim-map-meta{padding:11px 14px}.traffic-sim-stats>div{padding:14px}.traffic-sim-stats strong{font-size:20px}.traffic-sim-explain>div{padding:17px 18px}.traffic-sim-note{padding:17px 18px}}