/* RC Field Notes — shop grey, charcoal and a measured flash of race yellow. */
:root{--paper:#f4f3ee;--ink:#232621;--muted:#63685f;--line:#d7d9cf;--yellow:#e4f064;--dark:#21251f;--white:#fff;--accent:#b84b35;--mono:Consolas,"Courier New",monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.6 Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}img{display:block;max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.08;letter-spacing:-.045em}h2{font-size:clamp(1.9rem,3vw,2.7rem);margin-bottom:18px}p{color:var(--muted)}a:hover{text-decoration:underline;text-underline-offset:4px}button{color:inherit}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #9a4c19;outline-offset:5px}[hidden]{display:none!important}.shell{width:min(1312px,calc(100% - 96px));margin-inline:auto}.section{padding-block:64px}.eyebrow{font:700 11px/1.5 var(--mono);letter-spacing:.09em;text-transform:uppercase;display:block}.text-link{font-size:13px;font-weight:700;display:inline-flex;align-items:center;gap:16px}.text-link span{font-size:20px}.button{min-height:48px;padding:14px 20px;display:inline-flex;align-items:center;justify-content:space-between;gap:26px;border:1px solid transparent;font-size:13px;font-weight:700;line-height:1.25;transition:background .18s,transform .18s}.button:hover{text-decoration:none;transform:translateY(-2px)}.yellow{background:var(--yellow);color:var(--ink)}.yellow:hover{background:#edf887}.ghost{color:#fff;border-color:#65705b}.dark{background:var(--ink);color:#fff}.outline{border-color:var(--line);background:transparent}.small,small{font-size:12px;line-height:1.6}.skip-link{position:fixed;left:16px;top:-100px;background:var(--yellow);padding:12px;z-index:100}.skip-link:focus{top:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.preview-bar{background:#161a16;color:#a9afa4;border-bottom:1px solid #353b31;font:10px/1.5 var(--mono);letter-spacing:.06em}.preview-bar .shell{display:flex;justify-content:space-between;padding-block:8px}.preview-bar i{display:inline-block;width:5px;height:5px;background:var(--yellow);margin-right:6px;border-radius:50%}.site-header{background:var(--paper);position:sticky;top:0;z-index:30;border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;justify-content:space-between;gap:32px;min-height:88px}.brand{display:flex;align-items:center;gap:8px;flex-shrink:0}.brand:hover{text-decoration:none}.brand-mark{font:italic 900 45px/1 Arial,sans-serif;letter-spacing:-5px}.brand-mark>span{color:var(--accent);margin-left:1px;margin-right:6px}.brand-name{font:900 14px/.95 Arial,sans-serif;letter-spacing:-.035em}.nav nav{display:flex;align-items:center;gap:32px}.nav nav a{font-size:13px;font-weight:600;padding:12px 0}.nav nav a[aria-current]{text-decoration:underline;text-underline-offset:8px;text-decoration-color:var(--accent);text-decoration-thickness:2px}.nav nav .nav-start{border-left:1px solid #cccfc3;padding-left:28px;margin-left:10px}.nav-start span{margin-left:24px}.menu-toggle{display:none}
.hero{background:var(--dark);color:#fff;padding-block:34px}.hero-grid{display:grid;grid-template-columns:1.02fr 1fr;min-height:500px;gap:26px}.hero-copy{padding:40px 0 12px;display:flex;flex-direction:column;align-items:flex-start}.hero-copy .eyebrow{color:#bfc5b5;font-size:10px;display:flex;align-items:center;gap:10px}.signal-dot{width:7px;height:7px;border-radius:50%;background:var(--yellow)}.hero h1{font-size:clamp(3rem,5.7vw,5.7rem);font-weight:900;line-height:.98;letter-spacing:-.07em;margin:35px 0 24px}.hero h1>span{color:var(--yellow)}.hero-copy>p{color:#c3c9bb;max-width:420px;font-size:15px;line-height:1.75}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}.hero-note{margin-top:auto;padding-top:42px;display:flex;justify-content:space-between;gap:20px;width:100%;max-width:490px;font:9px/1.6 var(--mono);letter-spacing:.03em;color:#9ca58f}.hero-photo{position:relative;min-width:0;overflow:hidden;isolation:isolate}.hero-photo>img{width:100%;height:100%;object-fit:cover;object-position:48% center;position:absolute;z-index:-2}.hero-photo:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#0003 0%,transparent 35%,#0e140acf 100%);z-index:-1}.photo-corner{position:absolute;top:18px;left:20px;font:9px var(--mono);letter-spacing:.12em;background:#182113b8;padding:7px 10px}.photo-caption{position:absolute;left:24px;right:20px;bottom:58px;font-size:22px;font-weight:700;letter-spacing:-.03em;line-height:1.3}.photo-caption a{font:12px Arial,sans-serif;letter-spacing:0;display:inline-flex;gap:20px;color:var(--yellow);margin-top:12px}.photo-credit{position:absolute;bottom:18px;left:24px;font:9px/1.5 var(--mono);color:#d5dace}
.principles{background:var(--yellow)}.principles .shell{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:54px;font-size:12px}.principles b{font:10px var(--mono);margin-right:10px;opacity:.6}.principles a{font-weight:700}.discovery-grid{display:grid;grid-template-columns:1.25fr repeat(3,1fr);gap:28px;align-items:stretch}.discovery-grid h2{font-size:30px;margin:13px 0 10px}.discovery-grid p{font-size:13px;max-width:200px;margin-bottom:0}.discovery-grid>a{border-left:1px solid var(--line);padding:8px 20px;display:flex;flex-direction:column;justify-content:space-between;transition:background .2s}.discovery-grid>a:hover{background:#e9ecd9;text-decoration:none}.terrain-icon{font:54px/1 Arial,sans-serif;color:#5c6352;height:62px}.discovery-grid b{font-size:19px;letter-spacing:-.035em}.discovery-grid>a>span:last-child{color:var(--muted);font-size:11px;margin-top:6px}.section-heading{display:flex;gap:25px;justify-content:space-between;align-items:end;margin-bottom:28px}.section-heading h2{margin:12px 0 0}.section-heading>.text-link{white-space:nowrap;margin-bottom:4px}.home-guides{padding-top:22px}.filter-chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:30px}.filter-chips button{padding:11px 15px;min-height:43px;background:transparent;border:1px solid var(--line);font-size:11px;font-weight:600;border-radius:3px}.filter-chips button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}.filter-chips button:hover{border-color:var(--ink)}.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:34px 26px}.story-card{min-width:0;background:#fafaf7;border:1px solid var(--line);display:flex;flex-direction:column}.story-image{position:relative;display:block;overflow:hidden;aspect-ratio:1.8;background:#d9dbd0}.story-image img{width:100%;height:100%;object-fit:cover;transition:transform .35s}.story-image:hover img{transform:scale(1.035)}.image-tag{position:absolute;bottom:12px;left:14px;background:var(--paper);padding:4px 7px;font:9px/1.5 var(--mono);text-transform:uppercase;letter-spacing:.03em}.story-copy{padding:22px;display:flex;flex:1;flex-direction:column}.story-copy .eyebrow{color:var(--muted);font-size:9px;display:flex;justify-content:space-between}.story-copy h3{font-size:23px;line-height:1.1;letter-spacing:-.04em;margin:15px 0 12px}.story-copy h3 a:hover{text-decoration:none;color:#667216}.story-copy p{font-size:13px;line-height:1.6;margin-bottom:20px}.story-copy>.text-link{margin-top:auto;font-size:11px}
.evidence-section{padding:72px 0;background:#232820;color:#fff;position:relative}.evidence-grid{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}.evidence-grid>.eyebrow,.evidence-grid .eyebrow{color:#bfc9b1}.evidence-grid h2{font-size:clamp(2.4rem,4vw,3.8rem);margin:18px 0}.evidence-grid h2 span{color:var(--yellow)}.evidence-grid p{color:#c2c9b9;font-size:14px;max-width:420px}.evidence-grid .button{margin-top:10px}.evidence-card{border:1px solid #69705f;padding:28px;background:#2b3127;box-shadow:8px 8px 0 #171b14}.evidence-card>.eyebrow{display:flex;justify-content:space-between;font-size:10px}.speed-pair{margin:25px 0;display:grid;grid-template-columns:1fr 1fr;gap:25px}.speed-pair>div>span{display:block;font:9px var(--mono);color:#c7cfbf}.speed-pair strong{font-size:60px;line-height:1.4;letter-spacing:-.06em;display:block}.speed-pair strong small{font:12px var(--mono);letter-spacing:0}.speed-pair>div:last-child strong{color:var(--yellow)}.speed-bar{height:5px;display:block;background:#8f9a83}.speed-bar.measured{width:83.64%;background:var(--yellow)}.evidence-card>p{font:11px var(--mono)}.evidence-card>a{font-size:11px;color:var(--yellow)}.evidence-footnote{display:block;font-size:10px;color:#bbc2b4;border-top:1px solid #56604b;padding-top:15px;margin-top:20px}.bench-teaser{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;margin:12px 0 62px}.bench-teaser h2{margin-top:15px}.bench-teaser p{font-size:14px;max-width:430px}.gear-preview{height:285px;position:relative;display:block;background-color:#e7e9df;background-image:linear-gradient(#bdc3af40 1px,transparent 1px),linear-gradient(90deg,#bdc3af40 1px,transparent 1px);background-size:24px 24px;border:1px solid #cbd0c2;overflow:hidden}.gear-ring{position:absolute;display:flex;justify-content:center;align-items:center;flex-direction:column;border:16px dashed #646f59;border-radius:50%;font:700 40px/1 var(--mono);background:var(--paper);box-shadow:0 0 0 3px #646f59}.gear-ring>span{font:10px/2 var(--mono);letter-spacing:.15em}.gear-large{width:188px;height:188px;left:18%;top:26px;transform:rotate(-10deg)}.gear-small{width:114px;height:114px;left:54%;top:104px;font-size:28px;border-width:11px}.gear-label{position:absolute;bottom:15px;left:22px;font:700 18px var(--mono)}.gear-label small{display:block;font:8px/1.6 var(--mono);letter-spacing:.1em}.safety-strip{display:flex;align-items:center;gap:24px;background:#e8eadc;border:1px solid #cbd1b8;border-left:4px solid #848e57;padding:22px 26px}.safety-icon{display:grid;place-items:center;border:1px solid #8b9470;border-radius:50%;width:30px;height:30px;flex-shrink:0;font:20px var(--mono)}.safety-strip b{font-size:14px}.safety-strip p{font-size:12px;margin:4px 0 0}.safety-strip>a{white-space:nowrap;font-size:12px;font-weight:700;margin-left:auto}
.site-footer{background:#20241e;color:#fff;padding:58px 0 20px}.footer-top{display:grid;grid-template-columns:1.2fr 1fr 1fr 1.3fr;gap:40px}.site-footer .brand-mark>span{color:var(--yellow)}.footer-top p{font-size:13px;line-height:1.8;color:#b7bfb0;margin:22px 0}.footer-top .eyebrow{font-size:9px;color:#8f9a86;margin-bottom:20px}.footer-top>div>a:not(.brand){display:block;font-size:12px;color:#e3e7dd;margin-bottom:8px}.footer-top h3{font-size:21px;margin:0}.footer-top>div:last-child p{margin-top:14px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:48px;padding-top:20px;border-top:1px solid #41483a;color:#a4ae99;font:9px/1.5 var(--mono);letter-spacing:.03em}
.page-intro{padding-top:55px;padding-bottom:38px;border-bottom:1px solid var(--line)}.breadcrumb{display:block;color:var(--muted);font-size:11px;margin-bottom:32px}.page-intro h1,.article-header h1{font-size:clamp(2.5rem,5vw,4.8rem);max-width:1050px;margin:18px 0 22px;letter-spacing:-.065em}.page-intro>p{max-width:650px;margin-bottom:0;font-size:17px}.directory-toolbar{display:grid;grid-template-columns:1.5fr 1fr 1.1fr;gap:24px;align-items:end}label{font-size:12px;font-weight:700;display:block}input:not([type=checkbox],[type=radio]),select,textarea{width:100%;display:block;border:1px solid #c4c9bc;background:#fff;padding:12px;color:var(--ink);border-radius:0;margin-top:7px;font-size:14px;min-height:47px}input[type=checkbox],input[type=radio]{accent-color:#596629;width:18px;height:18px;vertical-align:middle;flex-shrink:0}.check-label{padding:12px 0;display:flex;align-items:center;gap:8px}.directory-status{display:flex;justify-content:space-between;font:11px var(--mono);color:var(--muted);margin:25px 0 18px}.vehicle-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.vehicle-card{padding:26px;background:#fafaf7;border:1px solid var(--line);min-width:0}.vehicle-top{display:flex;justify-content:space-between;align-items:center;gap:10px}.vehicle-top .eyebrow{font-size:9px;color:var(--muted)}.vehicle-top label{font-size:11px;cursor:pointer}.vehicle-card h2{font-size:27px;margin:20px 0 16px}.spec-pills{display:flex;flex-wrap:wrap;gap:6px}.spec-pills span{font:9px/1.5 var(--mono);padding:4px 8px;background:#e8ebdf}dl{font-size:13px;margin:22px 0}dl>div{display:grid;grid-template-columns:90px 1fr;gap:12px;border-bottom:1px solid var(--line);padding:10px 0}dt{color:var(--muted)}dd{margin:0}.claim-block{background:#edf0e4;padding:17px}.claim-block>span{font:9px var(--mono);letter-spacing:.08em}.claim-block>p{margin:5px 0 15px;color:var(--ink);font-size:13px}.claim-block>.has-measurement{font-size:24px;font-weight:700;margin-bottom:8px}.claim-block small{color:var(--muted)}.vehicle-card details{font-size:12px;margin:20px 0}.vehicle-card details summary{font-weight:700;min-height:32px}.vehicle-card details p{margin:12px 0}.vehicle-card details a{text-decoration:underline}.vehicle-card>.text-link{margin-top:10px}.edition-note{font-size:12px;line-height:1.65;padding:16px 20px;background:#e8eadf;border-left:3px solid #89945e;margin:28px 0}.compare-panel{margin-top:36px;background:white;border:1px solid var(--line);padding:24px}.compare-panel h2{font-size:28px}.table-scroll{max-width:100%;overflow:auto;overscroll-behavior-inline:contain;border:1px solid var(--line);margin:24px 0}table{border-collapse:collapse;min-width:100%;font-size:13px;text-align:left;line-height:1.5}th,td{padding:13px 16px;border:1px solid var(--line);min-width:130px;vertical-align:top}th{background:#e7ebdd;font-weight:700}td{background:#fff}table a{text-decoration:underline}caption{text-align:left;padding:12px;font-weight:700}.compare-panel th:first-child{min-width:115px}.wide-search{max-width:560px;margin-bottom:25px}.filter-count{font:11px var(--mono);margin-bottom:24px}.empty-state{padding:40px;background:#e6e9db;border:1px solid var(--line);text-align:center}
.starter-grid,.tool-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:65px;align-items:start}.starter-copy{padding-top:28px}.starter-copy h2{margin-top:17px}.starter-copy p{max-width:430px}.starter-form{padding:32px;background:#fff;border:1px solid var(--line)}.starter-form fieldset{border:0;padding:0;margin:0 0 24px}.starter-form legend{font-size:12px;font-weight:700;margin-bottom:12px}.starter-form label{display:flex;align-items:center;gap:14px;border:1px solid var(--line);padding:15px;margin:9px 0;cursor:pointer}.starter-form label:has(input:checked){border-color:#707e4c;background:#edf0e2}.starter-form b{font-size:14px}.starter-form small{display:block;color:var(--muted);font-weight:400;margin-top:3px}.starter-result:not(:empty){background:#edf0df;padding:22px;margin-top:20px}.starter-result h3{font-size:22px}.starter-result p{font-size:13px}.starter-result a{font-weight:700;text-decoration:underline;font-size:13px}.tool-grid{gap:32px;grid-template-columns:1fr 1fr}.calculator,.setup-sheet{border:1px solid var(--line);padding:30px;background:#fafbf6}.tool-grid h2{font-size:29px;margin:16px 0 25px}.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:25px}.calculation{display:flex;flex-wrap:wrap;gap:20px;background:#e5ead6;padding:22px;margin:25px 0}.calculation div{flex:1}.calculation strong{display:block;font:700 28px var(--mono)}.calculation span{font:10px var(--mono)}.calculation p{width:100%;font-size:12px;margin:0}.setup-sheet label{margin-bottom:18px}.setup-sheet textarea{resize:vertical}.setup-sheet .small{margin-top:16px}.tool-grid+.safety-strip{margin-top:45px}
.article-header{padding-top:45px;padding-bottom:40px}.article-header h1{font-size:clamp(2.5rem,4.4vw,4.3rem);max-width:980px}.article-header>p{max-width:760px;font-size:18px}.article-meta{display:flex;gap:22px;flex-wrap:wrap;font:10px/1.5 var(--mono);color:var(--muted);border-top:1px solid var(--line);padding-top:22px;margin-top:30px}.article-grid{display:grid;grid-template-columns:230px minmax(0,800px);gap:65px;align-items:start;padding-bottom:60px}.article-toc{position:sticky;top:115px;font-size:11px;border-top:2px solid var(--ink);padding-top:18px;max-height:70vh;overflow:auto}.article-toc summary{font-weight:700;margin-bottom:12px}.article-toc nav a{display:block;padding:7px 0;color:var(--muted);line-height:1.5}.article-toc>.text-link{margin-top:22px}.prose{font-size:16px;line-height:1.85;min-width:0}.prose h2{font-size:29px;margin-top:44px;line-height:1.2}.prose h3{font-size:21px;margin-top:30px;line-height:1.3}.prose p,.prose li{color:#495043}.prose a{color:#445919;text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}.prose ul,.prose ol{padding-left:24px}.prose li{padding-left:4px;margin-bottom:8px}.prose blockquote{margin:25px 0;padding:22px 25px;border-left:4px solid #8d9a56;background:#e9eddc}.prose blockquote p{margin:0}.prose blockquote ul{margin-bottom:0}.prose .edition-note{margin-top:0}.source-context{background:#e8ebdf;padding:25px;font-size:13px;margin:30px 0}.source-context p:last-child{margin-bottom:0}.source-context h2{font-size:24px;margin-top:0}.research-stats{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);margin-bottom:30px}.research-stats>div{padding:22px 30px;border-right:1px solid var(--line)}.research-stats>div:last-child{border:0}.research-stats strong{font:700 44px var(--mono);display:block}.research-stats span{font:10px var(--mono);color:var(--muted)}.research-list>a{display:flex;align-items:center;gap:35px;border-bottom:1px solid var(--line);padding:25px 0}.chapter-number{font:38px var(--mono);color:#8a9675}.research-list h2{font-size:25px;margin:8px 0}.research-list p{font-size:12px;margin:0}.research-list>a>span:last-child{margin-left:auto;font-size:25px}.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:38px}.method-grid article{border-top:1px solid var(--line);padding-top:22px}.method-grid h2{font-size:28px;margin-top:15px}.method-grid p{font-size:14px}.credits-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:35px}.credits-grid figure{margin:0;background:#fff;border:1px solid var(--line)}.credits-grid img{height:260px;width:100%;object-fit:contain;background:#e6e8df}.credits-grid figcaption{padding:22px;font-size:12px}.credits-grid h2{font-size:23px}.credits-grid a{text-decoration:underline}
@media(min-width:1500px){.hero h1{font-size:88px}.hero-grid{min-height:540px}}
@media(max-width:1100px){.shell{width:calc(100% - 56px)}.nav nav{gap:23px}.hero-grid{gap:25px}.hero h1{font-size:65px}.hero-note{font-size:8px}.hero-actions .button{padding:13px}.hero-copy>p{font-size:14px}.discovery-grid{gap:14px}.discovery-grid>a{padding:8px 14px}.evidence-grid{gap:45px}.article-grid{gap:35px;grid-template-columns:200px minmax(0,1fr)}.directory-toolbar{grid-template-columns:1fr 1fr}.directory-toolbar>.check-label{grid-column:1/-1;padding:0}.footer-top{gap:25px}.story-copy h3{font-size:21px}}
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