@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@10..48,400;10..48,600;10..48,700&family=DM+Sans:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root{
  --ink:#17262d; --ink-soft:#27424a; --paper:#f2ede3; --paper-light:#faf7f0;
  --line:#d7cec0; --yellow:#e5b33a; --yellow-soft:#f4df9e; --teal:#1e6868;
  --clay:#bd5c44; --muted:#68777a; --white:#fffaf1; --serif:'Bricolage Grotesque', Georgia, sans-serif;
  --sans:'DM Sans', sans-serif; --mono:'Space Mono', monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.65}
body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.23;z-index:10;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.06'/%3E%3C/svg%3E")}
a{color:inherit;text-decoration:none}
button{font:inherit}
.site-header{position:relative;z-index:20;border-bottom:1px solid var(--line);background:rgba(242,237,227,.9);backdrop-filter:blur(12px)}
.topline{background:var(--ink);color:var(--paper);font:11px var(--mono);letter-spacing:.08em;text-transform:uppercase;padding:8px max(22px,calc((100% - 1180px)/2));display:flex;justify-content:space-between;gap:18px}
.topline span:last-child{color:var(--yellow)}
.nav{max-width:1180px;margin:auto;min-height:78px;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:30px}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--serif);font-size:20px;font-weight:700;letter-spacing:-.04em}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;background:var(--yellow);border:2px solid var(--ink);border-radius:50%;color:var(--ink)}
.brand-mark svg{width:22px}
.nav-links{display:flex;align-items:center;gap:26px;font-size:14px;font-weight:600}
.nav-links a{position:relative;padding:27px 0}
.nav-links a:after{content:"";position:absolute;bottom:19px;left:0;width:0;height:2px;background:var(--clay);transition:width .25s}
.nav-links a:hover:after,.nav-links a[aria-current="page"]:after{width:100%}
.menu-toggle{display:none;border:1px solid var(--line);background:var(--paper-light);padding:8px 12px;color:var(--ink)}
.wrap{max-width:1180px;margin:auto;padding:0 22px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font:11px var(--mono);font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--teal)}
.eyebrow:before{content:"";width:27px;height:2px;background:var(--clay)}
h1,h2,h3{font-family:var(--serif);line-height:1.04;letter-spacing:-.055em;margin:0}
h1{font-size:clamp(47px,7.4vw,92px);max-width:800px}
h2{font-size:clamp(36px,5vw,65px)}
h3{font-size:26px}
p{margin:0 0 18px}
.lead{font-size:19px;line-height:1.55;color:var(--ink-soft);max-width:590px}
.button{display:inline-flex;align-items:center;gap:12px;border:1px solid var(--ink);background:var(--ink);color:var(--paper-light);padding:13px 18px;font-weight:700;font-size:14px;transition:transform .2s,background .2s}
.button:hover{background:var(--clay);transform:translateY(-2px)}
.button.alt{background:transparent;color:var(--ink)}
.button.alt:hover{background:var(--yellow)}
.button .arrow{font-size:18px;line-height:0}
.hero{background:var(--paper-light);border-bottom:1px solid var(--line);overflow:hidden}
.hero-grid{min-height:630px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:55px;padding-top:55px;padding-bottom:55px}
.hero h1{margin:18px 0 24px}
.hero h1 em{font-style:normal;color:var(--clay)}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.hero-note{border-left:2px solid var(--yellow);padding-left:14px;font-size:13px;color:var(--muted);max-width:430px;margin-top:25px}
.diagram-card{position:relative;min-height:500px;background:#dfe5dc;border:1px solid var(--ink);overflow:hidden;display:flex;align-items:center;justify-content:center}
.diagram-card:before,.diagram-card:after{content:"";position:absolute;background:rgba(30,104,104,.1)}
.diagram-card:before{width:1px;inset:0;left:50%}.diagram-card:after{height:1px;inset:50% 0 0}
.diagram-meta{position:absolute;top:18px;left:18px;right:18px;display:flex;justify-content:space-between;font:10px var(--mono);letter-spacing:.1em;text-transform:uppercase}
.diagram-caption{position:absolute;bottom:18px;left:18px;right:18px;display:flex;justify-content:space-between;align-items:end;font:11px var(--mono)}
.car-illustration{width:78%;position:relative;z-index:1}
.car-illustration path,.car-illustration line{stroke:var(--ink);stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.car-illustration .filled{fill:var(--yellow);stroke:var(--ink)}
.car-illustration .teal{fill:#75a5a0;stroke:var(--ink)}
.section{padding:105px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:45px}
.section-head p{max-width:370px;color:var(--muted);font-size:15px}
.ticker{background:var(--yellow);border-block:1px solid var(--ink);padding:16px 0;overflow:hidden;white-space:nowrap;font:12px var(--mono);font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.ticker span{display:inline-block;margin-right:45px}.ticker b{color:var(--clay);font-size:18px}
.symptom-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:20px}
.symptom-feature{background:var(--ink);color:var(--paper);padding:39px;min-height:345px;position:relative;overflow:hidden}
.symptom-feature h3{font-size:38px;max-width:430px;margin:15px 0 18px}.symptom-feature p{color:#c5d0ce;max-width:400px}
.symptom-feature .mark{position:absolute;right:26px;bottom:-20px;color:var(--yellow);font:120px var(--mono);opacity:.8;line-height:1}
.symptom-list{border-top:1px solid var(--line)}
.symptom-row{display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line);padding:20px 18px;background:var(--paper-light);transition:padding .2s,background .2s}
.symptom-row:hover{padding-left:27px;background:var(--yellow-soft)}
.symptom-row strong{font-family:var(--serif);font-size:21px}.symptom-row span{font:16px var(--mono);color:var(--clay)}
.feature-band{background:var(--teal);color:var(--paper-light);position:relative;overflow:hidden}
.feature-band .wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:75px;align-items:center}
.feature-band h2{max-width:420px}.feature-band p{color:#d0e0da;max-width:470px}
.feature-band .eyebrow{color:var(--yellow)}.feature-band .eyebrow:before{background:var(--yellow)}
.field-notes{border-left:1px solid rgba(250,247,240,.35);padding-left:35px}
.note-item{display:grid;grid-template-columns:48px 1fr;gap:20px;padding:23px 0;border-bottom:1px solid rgba(250,247,240,.25)}
.note-item:first-child{padding-top:0}.note-item:last-child{border:0}
.note-num{font:12px var(--mono);color:var(--yellow);padding-top:4px}
.note-item h3{font-size:23px;margin-bottom:5px}.note-item p{font-size:14px;margin:0;color:#d0e0da}
.guide-rail{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.guide-card{grid-column:span 4;background:var(--paper-light);border:1px solid var(--line);padding:25px;min-height:235px;display:flex;flex-direction:column;transition:transform .25s,border-color .25s}
.guide-card:nth-child(2){grid-column:span 5;background:var(--yellow-soft)}.guide-card:nth-child(3){grid-column:span 3;background:var(--ink);color:var(--paper)}
.guide-card:hover{transform:translateY(-5px);border-color:var(--clay)}
.guide-card small{font:10px var(--mono);color:var(--teal);text-transform:uppercase;letter-spacing:.1em}.guide-card:nth-child(3) small{color:var(--yellow)}
.guide-card h3{margin:22px 0 10px;font-size:25px}.guide-card p{font-size:14px;color:var(--muted);margin-bottom:15px}.guide-card:nth-child(3) p{color:#bdccca}
.text-link{font-size:13px;font-weight:700;margin-top:auto}.text-link:after{content:"  →";color:var(--clay)}
.cta{background:var(--clay);color:var(--paper-light);padding:70px 0}
.cta .wrap{display:flex;justify-content:space-between;align-items:center;gap:40px}.cta h2{max-width:600px;font-size:clamp(35px,4.5vw,58px)}.cta .button{background:var(--paper-light);color:var(--ink);border-color:var(--paper-light)}.cta .button:hover{background:var(--yellow)}
.site-footer{background:var(--ink);color:var(--paper);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:55px;padding-bottom:45px;border-bottom:1px solid rgba(242,237,227,.22)}
.site-footer .brand{color:var(--paper)}.site-footer .brand-mark{border-color:var(--paper)}
.footer-copy{color:#b9c8c5;font-size:14px;max-width:335px;margin-top:20px}.footer-title{font:11px var(--mono);color:var(--yellow);letter-spacing:.12em;text-transform:uppercase;margin-bottom:18px}.footer-links{display:grid;gap:9px;font-size:14px;color:#d0d9d5}.footer-links a:hover{color:var(--yellow)}
.disclaimer{color:#b9c8c5;font-size:11px;max-width:800px;padding-top:25px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:25px;font:10px var(--mono);color:#9eafac}
.page-hero{padding:80px 0 70px;background:var(--paper-light);border-bottom:1px solid var(--line)}.page-hero h1{margin:17px 0 18px;max-width:900px}.page-hero .lead{max-width:700px}
.index-layout{display:grid;grid-template-columns:220px 1fr;gap:70px}.index-nav{position:sticky;top:25px;height:max-content}.index-nav strong{font:11px var(--mono);text-transform:uppercase;color:var(--teal);letter-spacing:.1em}.index-nav a{display:block;font-size:14px;padding:10px 0;border-bottom:1px solid var(--line)}.index-nav a:hover{color:var(--clay)}
.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.article-card{padding:26px;background:var(--paper-light);border:1px solid var(--line);min-height:285px;display:flex;flex-direction:column;transition:transform .25s,background .25s}.article-card:hover{transform:translateY(-4px);background:var(--yellow-soft)}.article-card .number{font:11px var(--mono);color:var(--clay)}.article-card h2{font-size:30px;margin:26px 0 12px}.article-card p{font-size:14px;color:var(--muted)}.article-card .text-link{margin-top:auto}
.article-shell{max-width:1180px;margin:auto;padding:75px 22px 110px;display:grid;grid-template-columns:minmax(0,760px) 260px;gap:100px}.article-header h1{font-size:clamp(46px,6vw,76px);max-width:820px;margin:17px 0 22px}.article-meta{font:11px var(--mono);color:var(--muted);letter-spacing:.06em;text-transform:uppercase}.article-intro{font-size:21px;line-height:1.55;color:var(--ink-soft);border-left:3px solid var(--yellow);padding-left:20px;margin:35px 0 45px}.article-body h2{font-size:34px;margin:50px 0 14px}.article-body h3{font-size:23px;margin:32px 0 10px}.article-body p,.article-body li{font-size:17px;color:#365057}.article-body ul{padding-left:22px}.article-body li{margin:8px 0}.article-aside{border-top:2px solid var(--ink);padding-top:17px;height:max-content;position:sticky;top:26px}.article-aside strong{font:11px var(--mono);text-transform:uppercase;color:var(--clay);letter-spacing:.1em}.article-aside p{font-size:14px;color:var(--muted);margin-top:18px}.aside-box{background:var(--yellow-soft);padding:19px;margin-top:25px;font-size:13px}.article-end{border-top:1px solid var(--line);margin-top:55px;padding-top:24px;font:12px var(--mono);color:var(--muted)}
.prose-page{max-width:820px;margin:auto;padding:75px 22px 110px}.prose-page h1{font-size:clamp(48px,6vw,76px);margin:16px 0 30px}.prose-page h2{font-size:34px;margin:46px 0 13px}.prose-page p,.prose-page li{font-size:17px;color:#365057}.prose-page ul{padding-left:24px}.contact-block{margin-top:35px;background:var(--ink);color:var(--paper);padding:34px}.contact-block .button{margin-top:12px;background:var(--yellow);color:var(--ink);border-color:var(--yellow)}
.faq{border-top:1px solid var(--line);margin-top:38px}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;border:0;background:transparent;text-align:left;padding:22px 0;display:flex;justify-content:space-between;gap:20px;font-family:var(--serif);font-size:22px;color:var(--ink);cursor:pointer}.faq-question span:last-child{font-family:var(--mono);font-size:18px;color:var(--clay)}.faq-answer{display:none;padding:0 35px 20px 0;color:var(--muted);font-size:15px}.faq-item.open .faq-answer{display:block}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}.reveal.visible{opacity:1;transform:none}
@media(max-width:800px){.topline{padding-inline:16px;font-size:9px}.topline span:first-child{display:none}.nav{min-height:68px;padding-inline:16px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper-light);border-bottom:1px solid var(--line);padding:10px 16px 18px;flex-direction:column;align-items:stretch;gap:0}.nav-links.open{display:flex}.nav-links a{padding:13px 0;border-bottom:1px solid var(--line)}.nav-links a:after{display:none}.hero-grid,.feature-band .wrap{grid-template-columns:1fr;gap:38px}.hero-grid{padding-top:50px;min-height:0}.diagram-card{min-height:350px}.section{padding:72px 0}.section-head{display:block}.section-head p{margin-top:18px}.symptom-grid{grid-template-columns:1fr}.symptom-feature{min-height:285px}.guide-rail{display:grid;grid-template-columns:1fr}.guide-card,.guide-card:nth-child(2),.guide-card:nth-child(3){grid-column:auto}.cta .wrap{display:block}.cta .button{margin-top:25px}.footer-grid{grid-template-columns:1fr 1fr;gap:32px}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:9px}.index-layout{display:block}.index-nav{position:static;margin-bottom:38px}.article-list{grid-template-columns:1fr}.article-shell{display:block;padding-top:52px}.article-aside{position:static;margin-top:55px}.article-body p,.article-body li{font-size:16px}.page-hero{padding:55px 0 48px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.button,.guide-card,.symptom-row{transition:none}}