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var(--blue);border-bottom:0;min-width:1px;color:var(--blue)}.braking-measure span{position:absolute;left:50%;bottom:15px;transform:translateX(-50%);white-space:nowrap;font-size:14px;font-weight:650;line-height:1.5;background:#eef4fd;padding:0 5px;border-radius:3px}.ruler{margin:69px 16px 0;display:flex;justify-content:space-between;font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:6px}.ruler span{width:0;white-space:nowrap;text-indent:-6px}.ruler span:last-child{transform:translateX(-29px)}.legend{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:14px;margin-top:24px}.legend i{width:13px;height:4px;border-radius:0;vertical-align:middle}.road-note{font-size:16px;color:var(--muted);margin:12px 0 0}.metrics{padding:28px 32px;background:#fff;border-block:1px solid var(--line);display:grid;grid-template-columns:1fr 1.15fr .9fr 1.5fr 1fr;gap:24px;align-items:start}.metric-row,.distance-result,.status-metric{padding:0;margin:0;min-width:0}.metric-row>span,.distance-result>span,.status-metric>span:first-child{display:block;font-size:12px;color:var(--muted);letter-spacing:.8px;line-height:1.6;margin-bottom:10px}.metric-row strong{display:block;font-weight:600;font-size:34px;line-height:1.4;letter-spacing:-.6px;white-space:nowrap}.metric-row strong small{font-size:16px;color:var(--muted);letter-spacing:0}.metric-row .road-result{font-size:17px;line-height:2.8;letter-spacing:0}.distance-result>strong{display:block;font-size:44px;line-height:1.1;font-weight:600;color:var(--blue);letter-spacing:-1px;white-space:nowrap}.distance-result small{font-size:21px;letter-spacing:0}.status-badge{display:inline-block;padding:5px 10px;border:1px solid #d8e0e8;border-radius:5px;color:#5f6875;background:#f7f8fa;font-size:13px;line-height:1.8;font-weight:650;margin-top:3px}.status-badge[data-state=DRIVING],.status-badge[data-state=BRAKING]{color:var(--blue);background:#eef4ff;border-color:#cadbfa}.status-badge[data-state=STOPPED]{color:#1d4ed8;background:#eff6ff;border-color:#cadbfa}.outcome{display:flex;align-items:center;flex-wrap:wrap;gap:8px 18px;padding:22px 32px;background:#fff;min-height:80px}.outcome-label{font-size:12px;color:var(--muted);letter-spacing:.8px}.outcome strong{font-size:16px;line-height:1.6}.outcome>span:last-child{font-size:16px;color:var(--muted)}.outcome[data-result=safe]{background:#eff6ff}.outcome[data-result=safe] strong{color:#1d4ed8}.outcome[data-result=warning]{background:#fff7ed}.outcome[data-result=warning] strong{color:#b54708}.formula{display:flex;gap:25px;align-items:center;padding:18px 32px;border-top:1px solid var(--line);color:var(--muted);font-size:14px;background:#fafbfc}.formula>span{color:#334155;font-family:Georgia,serif;font-style:italic;font-size:22px}.formula p{margin:0}.formula b{margin:0 10px}.sim-note{font-size:15px;color:var(--muted);margin:18px 0 0;max-width:1000px;line-height:1.8}.road-visual[data-condition=wet] .track{background:#c4ccd6}.road-visual[data-condition=wet] .track:after{content:"";position:absolute;left:3%;right:3%;top:26%;height:2px;background:#ffffff70;box-shadow:0 64px 0 #ffffff60;pointer-events:none}.road-visual[data-condition=low] .track{background:#dcedf8;border-color:#aecbdc}.road-visual[data-condition=low] .track:after{content:"";position:absolute;left:4%;right:4%;top:24%;height:2px;background:#ffffffa0;pointer-events:none}.result{text-align:center;border-top:1px solid var(--line);padding-top:94px;padding-bottom:100px}.result h2{font-size:42px;line-height:1.55;margin:24px auto 34px}.result em{color:var(--blue);font-style:normal}.result-flow{font-size:16px;font-weight:650;letter-spacing:1.2px;color:#295995}.result-flow span{margin:0 16px;color:#8c9db3}.result>p{color:var(--muted);font-size:20px;line-height:1.9;margin:30px auto 0;max-width:860px}footer{border-top:1px solid var(--line);padding:30px 48px;display:flex;justify-content:space-between;gap:20px;font-size:12px;letter-spacing:.6px;color:#586577}footer b{font-weight:400;color:#718096}button:focus-visible,a:focus-visible,input:focus-visible,.road-scroll:focus-visible{outline:3px solid #72a3fa;outline-offset:4px}@media(max-width:900px){header{padding:0 24px;height:76px}.brand-sub{display:none}nav{gap:20px;font-size:14px}.intro{padding-top:60px}.section{padding:64px 24px}.pipeline{grid-template-columns:1fr 24px 1fr;row-gap:24px}.pipeline>.arrow:nth-child(4){display:none}.pipeline article{min-height:180px}.section-heading{display:block}.assumption{display:inline-block;margin:0 0 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p{font-size:17px}.desktop-break{display:none}.section-desc{font-size:18px}.controls{padding:22px 18px}.road-buttons{gap:6px}.road-buttons button{font-size:12px;padding:12px 4px}.actions{padding-inline:18px}.actions button{padding:12px 15px;font-size:13px}.road-panel{padding:22px 18px}.view-label{font-size:11px;gap:12px;flex-wrap:wrap}.legend{font-size:13px;flex-direction:column;gap:4px}.metrics{padding:24px 18px;gap:24px 12px;grid-template-columns:1fr 1fr}.metric-row strong{font-size:31px}.metric-row .road-result{font-size:16px}.distance-result{grid-column:2;grid-row:2}.status-metric{grid-column:1 / -1}.distance-result>strong{font-size:38px}.outcome{padding:20px 18px;align-items:flex-start;flex-direction:column;gap:4px}.outcome strong{font-size:15px;overflow-wrap:anywhere}.formula{flex-wrap:wrap;gap:6px;padding:18px}.formula p{font-size:13px}.result h2{font-size:28px}.result-flow{font-size:12px;letter-spacing:.4px}.result-flow span{margin:0 5px}.result>p{font-size:17px}.sim-note{font-size:14px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Vertical, top-down vehicle models. Keep position transforms separate. */
#intro .car{width:36px;height:77px;border-radius:12px 12px 9px 9px}
#intro .car:before,#intro .car:after{top:14px;bottom:auto;width:5px;height:15px;border-radius:2px;box-shadow:0 32px 0 #253347}
#intro .car:before{left:-5px;right:auto}
#intro .car:after{left:auto;right:-5px}
#intro .car span{inset:16px 5px 17px;border:0;border-top:8px solid #91b7ed;border-bottom:5px solid #91b7ed;border-radius:8px 8px 4px 4px}
.hero-car{top:16px;transform:none}
.friction-tech-mini-car span{width:20px;height:36px;left:calc(100% - 20px)}

/* Align vehicle length with the road's left-to-right travel direction. */
#intro .hero-car{transform:rotate(90deg);transform-origin:center}

/* INTRO trial: dimensional car, aligned to road; removable as one block. */
#intro .hero-car{width:132px;height:74px;left:24%;top:7px;transform:none;border:0;border-radius:0;background:transparent url("intro-car.svg") center/contain no-repeat;box-shadow:none}
#intro .hero-car:before,#intro .hero-car:after,#intro .hero-car span{display:none}
@media(max-width:550px){#intro .hero-car{width:112px;height:64px;top:15px;left:22%}}

/* Simulation orientation only: face along the road toward the right. */
.simple-friction-simulation .simple-sim-car,
.simple-friction-simulation .simple-sim-ghosts i,
.simple-friction-simulation .simple-sim-obstacle{transform:translateX(-50%) rotate(90deg);transform-origin:center}
.simple-friction-simulation .simple-sim-obstacle span{top:50%;left:50%;transform:translate(-50%,-50%) rotate(-90deg) translateY(-36px)}


/* Small team links inside the existing site footer. */
.site-footer{flex-wrap:wrap;row-gap:18px}
.site-footer .footer-team{flex:0 0 100%;display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:12px 28px;margin:0;padding:0}
.site-footer .footer-member{display:inline-flex;align-items:center;gap:9px;font-size:12px;line-height:1.6;white-space:nowrap}
.site-footer .footer-member strong{color:#526174;font-size:12px;font-weight:500}
.site-footer .footer-github{color:#8b97a4;font-size:11px}
.site-footer .footer-member a{color:#64748b;text-decoration:none}
.site-footer .footer-member a:hover{text-decoration:underline;color:#2563eb}
@media(max-width:550px){.site-footer .footer-team{gap:8px 20px;justify-content:flex-start}.site-footer .footer-member{font-size:11px;gap:7px}.site-footer .footer-member strong{font-size:11px}}

/* Readable team names and generous GitHub link targets. */
body .site-footer .footer-team{gap:20px 36px;padding:12px 0 20px}
body .site-footer .footer-member{gap:12px;font-size:20px;line-height:1.5}
body .site-footer .footer-member strong{font-size:20px;font-weight:600;color:#334155}
body .site-footer .footer-member .footer-github{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:8px 10px;font-size:16px;font-weight:500;color:#475569;border-radius:6px}
body .site-footer .footer-member .footer-github:hover{color:#2563eb;background:#eff6ff}
@media(max-width:700px){
 body .site-footer .footer-team{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 12px}
 body .site-footer .footer-member{flex-direction:column;gap:2px;white-space:normal;text-align:center}
 body .site-footer .footer-member strong{font-size:18px}
}