:root{--bg-canvas:#13261d;--bg-surface:#1d3428;--bg-surface-hover:#294333;--text-primary:#efe6d2;--text-muted:#c9c6b5;--accent-primary:#b8923a;--accent-secondary:#d6bd80;--border-subtle:#53604a;--ease-kinetic:cubic-bezier(.16,1,.3,1);--shadow-elevation:0 12px 32px -4px rgba(0,0,0,.25);--glow-accent:0 0 24px -4px var(--accent-primary);--glass-backdrop:blur(16px) saturate(180%)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg-canvas);color:var(--text-primary);font:17px/1.8 "Trebuchet MS","Segoe UI",sans-serif;overflow-wrap:anywhere;hyphens:auto}a{color:var(--accent-secondary);text-underline-offset:5px}a:hover{color:var(--text-primary)}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid var(--accent-secondary);outline-offset:5px}button{cursor:pointer}.skip-link{position:absolute;top:-100px;left:16px;z-index:20;padding:8px 16px;background:var(--text-primary);color:var(--bg-canvas)}.skip-link:focus{top:12px}.site-header{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:23px 28px;border-bottom:1px solid var(--border-subtle)}.brand{flex-shrink:0;display:flex;align-items:center;gap:10px;color:var(--text-primary);text-decoration:none;font-weight:700;font-size:20px;letter-spacing:-.7px}.brand-mark{color:var(--accent-primary);font-size:28px;line-height:1}.brand small{font-size:12px;color:var(--text-muted);letter-spacing:0}.navigation{display:flex;align-items:center;gap:24px}.nav-group{display:flex;gap:17px}.nav-group+.nav-group{border-left:1px solid var(--border-subtle);padding-left:24px}.navigation a{color:var(--text-primary);font-size:13px;text-decoration:none;white-space:nowrap}.navigation a:hover,.navigation a[aria-current=page]{color:var(--accent-secondary);text-decoration:underline}.menu-toggle{display:none;background:none;border:1px solid var(--border-subtle);color:var(--text-primary);font-size:28px;line-height:1;width:43px;height:43px}.wrap{max-width:1200px;margin:0 auto;padding:0 32px}main{min-height:60vh}.hero{padding:83px 0 69px;border-bottom:1px solid var(--border-subtle)}.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:12px;font-weight:700;color:var(--accent-secondary);margin:0 0 20px}h1,h2,h3{line-height:1.15;font-weight:600;letter-spacing:-.035em;hyphens:none}h1{font-size:clamp(40px,6.4vw,82px);max-width:1000px;margin:0 0 29px}h2{font-size:clamp(27px,3.2vw,39px);margin:0 0 24px}h3{font-size:23px;margin:30px 0 14px}p{margin:0 0 22px}.lead{font-size:clamp(19px,2.1vw,24px);max-width:68ch;color:var(--text-muted)}.button{display:inline-block;padding:13px 20px;border:1px solid var(--accent-primary);border-radius:0;background:transparent;color:var(--text-primary);font-size:12px;letter-spacing:.14em;font-weight:700;text-decoration:none;text-transform:uppercase;transition:background .25s,transform .3s var(--ease-kinetic)}.button:hover{background:var(--bg-surface-hover);transform:translateY(-3px)}.button.secondary{border-color:var(--border-subtle)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 8px}.section{padding:57px 0;border-bottom:1px solid var(--border-subtle)}.two-column{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:62px}.section-heading{max-width:70ch}.intro-note{color:var(--text-muted);max-width:70ch}.rows{list-style:none;margin:0;padding:0}.rows li,.list-row{display:flex;gap:18px;padding:22px 0;border-top:1px solid var(--border-subtle)}.rows li:last-child{border-bottom:1px solid var(--border-subtle)}.row-icon{color:var(--accent-primary);font-size:23px;flex:0 0 26px;line-height:1.3}.rows h3{margin:0 0 8px;font-size:20px}.rows p{margin:0;color:var(--text-muted)}.rows a{display:inline-block;margin-top:9px}.diagram{width:100%;height:auto;display:block;margin:22px 0;color:var(--text-primary)}.diagram text{font-family:"Trebuchet MS","Segoe UI",sans-serif;fill:#efe6d2}.diagram .diagram-line{stroke:#b8923a;fill:none;stroke-width:2}.diagram .diagram-shape{stroke:#b8923a;fill:#1d3428;stroke-width:2}.caption,figcaption{font-size:14px;color:var(--text-muted);margin-top:12px}figure{margin:22px 0}.car-cabin-photo,.vehicle-installation-photo{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;border-radius:4px}.article-header{padding:65px 0 43px;border-bottom:1px solid var(--border-subtle)}.article-header h1{font-size:clamp(39px,5.4vw,67px)}.article-body{max-width:72ch;margin:0 auto;padding:44px 0 65px}.article-body h2{font-size:30px;margin-top:42px}.article-body ul,.article-body ol{padding-left:24px}.article-body li{margin-bottom:12px}.article-body p,.article-body li{color:var(--text-muted)}.article-body strong{color:var(--text-primary)}.utility-panel{background:var(--bg-surface);border:1px solid var(--border-subtle);padding:24px;border-radius:4px;margin:28px 0}.utility-panel p:last-child{margin-bottom:0}.table-scroll{overflow-x:auto;margin:28px 0}table{border-collapse:collapse;width:100%;min-width:560px;text-align:left;font-size:15px}th,td{padding:15px 14px;border-bottom:1px solid var(--border-subtle);vertical-align:top}th{color:var(--accent-secondary);font-weight:600}td{color:var(--text-muted)}details{padding:22px 0;border-top:1px solid var(--border-subtle)}details:last-child{border-bottom:1px solid var(--border-subtle)}summary{cursor:pointer;font-size:20px;font-weight:600;line-height:1.5}details p{margin:16px 0 0;color:var(--text-muted)}.form-grid{display:grid;gap:20px}label{display:block;font-size:15px;font-weight:700;margin-bottom:7px}input,select,textarea{display:block;width:100%;padding:12px;border:1px solid var(--border-subtle);border-radius:4px;background:var(--bg-canvas);color:var(--text-primary);min-width:0}textarea{min-height:150px;resize:vertical}input::placeholder,textarea::placeholder{color:var(--text-muted)}.hint{display:block;font-size:13px;color:var(--text-muted);margin-top:6px}.status{min-height:1.8em;color:var(--accent-secondary);font-size:15px;margin-top:18px}.message-output{white-space:pre-wrap;font:15px/1.7 "Trebuchet MS","Segoe UI",sans-serif;margin:0}.site-footer{padding:40px 0 26px}.footer-top{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.footer-links{display:flex;flex-wrap:wrap;gap:20px;font-size:14px}.footer-small{font-size:13px;color:var(--text-muted);margin:24px 0 0}.footer-brand{font-weight:700}.muted{color:var(--text-muted)}.reveal-enabled .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease-kinetic),transform .7s var(--ease-kinetic)}.reveal-enabled .reveal-visible{opacity:1;transform:translateY(0)}[hidden]{display:none!important}
@media(min-width:1025px){.article-body{font-size:18px}.section .two-column>div{min-width:0}}
@media(min-width:769px) and (max-width:1024px){.site-header{gap:16px;padding:20px}.brand{font-size:17px}.navigation{gap:12px}.nav-group{gap:10px}.nav-group+.nav-group{padding-left:12px}.navigation a{font-size:11px}.two-column{gap:32px}}
@media(max-width:768px){.site-header{padding:18px 22px}.menu-toggle{display:block}.navigation{display:none;position:absolute;left:0;right:0;top:100%;z-index:10;background:var(--bg-surface);padding:20px 24px;border-bottom:1px solid var(--border-subtle);box-shadow:var(--shadow-elevation)}.navigation.is-open{display:block}.nav-group{display:flex;flex-direction:column;gap:0}.navigation a{padding:11px 0;font-size:16px}.nav-group+.nav-group{padding-left:0;border-left:0;border-top:1px solid var(--border-subtle);margin-top:10px;padding-top:10px}.wrap{padding:0 24px}.hero{padding:55px 0 45px}.two-column{grid-template-columns:1fr;gap:30px}.section{padding:40px 0}.article-header{padding:44px 0 30px}.article-body{padding:30px 0 45px}}
@media(max-width:480px){.wrap{padding:0 20px}.site-header{padding:16px 20px}.brand{font-size:18px}.brand small{font-size:11px}h1{font-size:42px}.lead{font-size:19px}.actions{flex-direction:column;align-items:stretch}.button{text-align:center;padding:14px}.utility-panel{padding:18px}.footer-top{display:block}.footer-links{margin-top:20px;gap:15px}.article-body h2{font-size:27px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.reveal-enabled .reveal{opacity:1;transform:none}.button:hover{transform:none}}
@media print{.site-header,.site-footer,.actions,.menu-toggle{display:none}body{background:white;color:black}.wrap{max-width:none;padding:0}.article-body{max-width:none}p,.article-body p,.article-body li,a{color:black}.reveal-enabled .reveal{opacity:1;transform:none}}