:root{--bg:#10171b;--panel:#172127;--ink:#f3f2ed;--muted:#a6b1b6;--amber:#edb454;--paper:#f1f0e9;--dark:#142329;--line:#334148}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,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{cursor:pointer}button:disabled{cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--amber);outline-offset:5px}input:focus,select:focus,textarea:focus{outline:2px solid #91600c;outline-offset:2px}[hidden]{display:none!important}.wrap{width:min(1280px,calc(100% - 96px));margin:auto}.preview-bar{display:flex;justify-content:center;align-items:center;gap:9px;padding:8px 20px;background:#293029;color:#dbc697;font-size:12px;letter-spacing:.03em}.status-dot{display:inline-block;width:6px;height:6px;background:var(--amber);border-radius:50%;flex-shrink:0}.header{width:min(1376px,calc(100% - 64px));margin:auto;display:flex;justify-content:space-between;align-items:center;padding:29px 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-size:31px;letter-spacing:-1.3px;font-weight:700}.brand svg{color:var(--amber)}.brand-dot{color:var(--amber);margin-left:-10px}.header nav{display:flex;align-items:center;gap:28px;font-size:14px}.header nav a:hover{color:var(--amber)}.nav-cta{border-bottom:1px solid var(--amber);padding:8px 0}.menu-toggle{display:none}.skip{position:absolute;top:-80px;left:10px;padding:12px;background:var(--amber);color:var(--dark);z-index:20}.skip:focus{top:10px}.hero{display:grid;grid-template-columns:1.08fr 1fr;align-items:center;padding:60px 0 50px;min-height:740px;gap:0}.eyebrow{font-size:11px;letter-spacing:.17em;font-weight:600;margin:0 0 25px;color:var(--amber)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(55px,6.6vw,91px);font-weight:550;line-height:1.05;letter-spacing:-.065em;margin:0 0 28px}em{font-style:normal;color:var(--amber)}.hero-sub{font-size:23px;line-height:1.4;margin-bottom:16px;letter-spacing:-.02em}.hero-text{max-width:420px;color:var(--muted);font-size:16px}.actions{display:flex;gap:28px;align-items:center;margin-top:31px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:28px;padding:16px 23px;border:1px solid transparent;font-size:14px;font-weight:650;transition:background .2s,transform .2s;text-align:left}.button:hover{transform:translateY(-2px)}.primary{background:var(--amber);color:var(--bg)}.primary:hover{background:#ffd28c}.text-link{font-size:14px;border-bottom:1px solid #657077;padding-bottom:6px}.hero-foot{display:flex;gap:20px;color:#91a0a7;font-size:11px;margin-top:52px;letter-spacing:.02em}.hero-foot span:before{content:'—';margin-right:9px;color:var(--amber)}.hero-art{position:relative;min-width:0}.hero-art svg{width:100%;height:auto;display:block}.art-caption{display:flex;justify-content:space-between;font-size:9px;letter-spacing:.13em;color:#819199;margin:0 20px}.discipline{display:flex;justify-content:space-between;gap:20px;padding:29px 0 40px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}.discipline p{margin:0}.discipline>span{color:var(--amber)}.light-section{background:var(--paper);color:var(--dark);padding:100px 0}.light-section .eyebrow{color:#8d611e}.section-heading{display:flex;justify-content:space-between;gap:70px;align-items:end;margin-bottom:30px}.section-heading>p{max-width:360px;color:#657078;margin-bottom:5px}.section-heading h2{margin-bottom:0}h2{font-size:clamp(32px,3.5vw,49px);line-height:1.15;font-weight:550;letter-spacing:-.045em;margin-bottom:30px}h3{font-weight:600;letter-spacing:-.025em;line-height:1.35;font-size:24px}.catalog-note{font-size:13px;color:#657078;max-width:740px;margin:23px 0 32px}.filters{display:flex;align-items:end;gap:24px;border-top:1px solid #bdc5c6;padding-top:25px}.filters label{width:250px}.filters select{margin-bottom:0}.plain-button,.inline-link{background:none;border:0;color:inherit;padding:12px 0;font-size:14px;text-decoration:underline;text-underline-offset:5px}.small{font-size:12px;line-height:1.6;color:#616d73;margin:16px 0}.catalog-items{border-top:1px solid #bdc5c6}.catalog-item{display:grid;grid-template-columns:180px 1fr auto;gap:24px;align-items:center;padding:24px 0;border-bottom:1px solid #bdc5c6}.catalog-item h3{font-size:22px;margin:0 0 5px}.catalog-item .group{font-size:12px;color:#637078}.catalog-item p{font-size:12px;color:#637078;margin:0}.grade{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.04em}.catalog-pick{background:none;border:1px solid #afb9ba;padding:12px 18px;font-size:13px;color:var(--dark)}.catalog-pick:hover{background:var(--dark);color:var(--paper)}.empty{padding:35px;border-bottom:1px solid #bdc5c6}.empty a{text-decoration:underline}.catalog-bottom{margin:26px 0 0;font-size:14px}.catalog-bottom button{color:#84580c;font-weight:650}.engineering{padding:105px 0}.engineering .section-heading{margin-bottom:50px}.engineering .section-heading h2{max-width:740px}.engineering .section-heading>p{color:var(--muted);max-width:270px}.engineering em{color:var(--muted)}.service-row{display:flex;align-items:center;gap:40px;border-top:1px solid var(--line);padding:32px 0}.row-number{font-size:13px;color:var(--amber);align-self:flex-start;padding-top:7px}.service-row>div{max-width:720px}.service-row h3{font-size:29px;margin:0 0 10px}.service-row p{margin:0;color:var(--muted)}.arrow-button{background:none;border:1px solid #56636a;border-radius:50%;color:var(--amber);width:52px;height:52px;font-size:25px;margin-left:auto;flex-shrink:0}.arrow-button:hover{background:var(--amber);color:var(--dark)}.service-footer{display:flex;justify-content:space-between;gap:40px;align-items:center;border-top:1px solid var(--line);padding-top:30px}.service-footer p{max-width:680px;color:var(--muted);font-size:14px;margin:0}.outline{border-color:#6e7b81;white-space:nowrap}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:25px;padding:0;list-style:none;margin:55px 0}.steps li{border-top:1px solid #b4bdbd;padding-top:18px}.steps span{font-size:12px;color:#936119}.steps h3{font-size:20px;margin:18px 0 10px}.steps p{font-size:13px;color:#627078}.deliverable{display:grid;grid-template-columns:1fr 1.5fr 110px;align-items:center;gap:48px;background:#e5e5dd;padding:38px}.deliverable h3{margin:0;font-size:27px}.deliverable .eyebrow{margin-bottom:12px}.deliverable>p{margin:0;font-size:15px;color:#4c5c63}.document-symbol{border:1px solid #acb2ac;height:140px;padding:20px;transform:rotate(6deg);background:#f4f3ec}.document-symbol span{font-size:14px;letter-spacing:.15em}.document-symbol i{display:block;height:1px;background:#b1b5af;margin-top:12px}.document-symbol b{display:block;text-align:right;color:#977029;margin-top:10px}.team{padding:110px 0;display:grid;grid-template-columns:1fr 1fr;gap:85px;border-bottom:1px solid var(--line)}.team h2{max-width:580px}.team em{color:var(--muted)}.experience{font-size:84px;line-height:1;letter-spacing:-.06em;color:var(--amber);margin-bottom:28px}.experience span{font-size:13px;letter-spacing:.05em;margin-left:15px;color:var(--muted)}.team-lead{font-size:23px;line-height:1.5}.team-copy>p:last-child{color:var(--muted);margin-bottom:0}.faq{padding:95px 0 105px}.faq details{border-bottom:1px solid var(--line);padding:24px 0;max-width:960px;margin-left:auto}.faq summary{display:flex;justify-content:space-between;align-items:center;gap:30px;cursor:pointer;font-size:20px;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary span{color:var(--amber);font-size:25px}.faq details[open] summary span{transform:rotate(45deg)}.faq details p{color:var(--muted);max-width:820px;margin:20px 0 5px}.request-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:100px}.request-intro h2{font-size:62px}.request-intro em{color:#a16d20}.request-intro>p:not(.eyebrow){max-width:330px;color:#637078}.local-note{max-width:340px;margin-top:45px;border-top:1px solid #bbc2bd;padding-top:22px;font-size:14px}.local-note .status-dot{background:#9c7027;margin-right:7px}.local-note p{margin-top:10px;color:#637078;font-size:13px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 22px}label{display:block;font-size:13px;font-weight:600}label small{font-weight:400;color:#627078}label>span[aria-label]{color:#97600c}input,select,textarea{display:block;width:100%;border:1px solid #aeb9ba;background:#fafaf5;color:var(--dark);padding:13px 14px;border-radius:0;margin:8px 0 22px;max-width:100%;font-size:15px}textarea{resize:vertical;min-height:90px}input::placeholder,textarea::placeholder{color:#768186}input[type=file]{font-size:13px;padding:12px;margin-bottom:9px}input::file-selector-button{border:0;padding:8px;margin-right:10px;background:#e7e7df;color:var(--dark);cursor:pointer}.hint{font-size:12px;line-height:1.6;color:#617077;font-weight:400;display:block}.dark{background:var(--dark);color:white}.dark:hover{background:#30424b}.request-preview{margin-top:30px;padding:28px;border:1px solid #b6bdba;background:#e6e8df}.request-preview h3{font-size:26px}.request-preview pre{font-family:inherit;font-size:14px;white-space:pre-wrap;overflow-wrap:anywhere}.request-preview button{margin-top:12px}.request-preview .plain-button{display:block}.footer{display:flex;justify-content:space-between;gap:40px;align-items:start;padding:45px 0}.footer p{color:var(--muted);font-size:13px;max-width:290px}.footer>div>a{font-size:14px;color:var(--amber)}.footer small{display:block;color:#8d9da5;font-size:11px;margin-top:15px}
@media(min-width:1500px){.hero{padding-top:75px;padding-bottom:65px}}@media(max-width:1100px){.header nav{gap:16px;font-size:12px}.wrap{width:calc(100% - 56px)}.hero{min-height:650px}.hero-sub{font-size:20px}.section-heading{gap:35px}.request-layout{gap:50px}.request-intro h2{font-size:49px}.catalog-item{grid-template-columns:140px 1fr auto}.deliverable{gap:25px}.team{gap:50px}}@media(max-width:760px){html{scroll-padding-top:15px}.wrap{width:calc(100% - 40px)}.preview-bar{font-size:10px;padding:7px 10px;flex-wrap:wrap;gap:6px}.preview-detail{font-size:10px}.header{width:calc(100% - 40px);padding:20px 0;position:relative;flex-wrap:wrap}.brand{font-size:27px}.brand svg{height:28px}.menu-toggle{display:flex;gap:12px;background:none;border:1px solid #4e5d65;color:var(--ink);padding:8px 12px;font-size:13px}.header nav{display:none;width:100%;padding-top:20px;flex-direction:column;align-items:start;font-size:15px;gap:15px}.header nav.open{display:flex}.hero{grid-template-columns:1fr;padding:40px 0 30px;min-height:0;gap:20px}.hero .eyebrow{font-size:9px;letter-spacing:.11em}h1{font-size:clamp(46px,13vw,78px)}.hero-sub{font-size:21px}.hero-text{font-size:15px}.actions{gap:20px;margin-top:24px}.hero-foot{margin-top:28px;font-size:10px;gap:12px}.hero-art{max-width:490px;width:100%;margin:auto}.hero-art svg{max-height:470px}.art-caption{font-size:8px;margin:0}.discipline{display:grid;grid-template-columns:1fr 1fr;gap:10px 20px;padding:23px 0;font-size:11px}.discipline>span{display:none}.discipline p:before{content:'+';color:var(--amber);margin-right:9px}.light-section{padding:62px 0}.section-heading{display:block;margin-bottom:25px}h2{font-size:36px}.section-heading>p{margin-top:22px;max-width:none;font-size:15px}.filters{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px}.filters label{width:auto;font-size:12px}.filters select{font-size:13px;padding:12px 8px}.filters .plain-button{grid-column:1/-1;text-align:left;justify-self:start}.catalog-item{grid-template-columns:1fr auto;gap:10px;padding:22px 0}.catalog-item>.grade{grid-column:1/-1}.catalog-item h3{font-size:19px}.catalog-pick{font-size:12px;padding:10px}.engineering{padding:65px 0}.engineering .section-heading{margin-bottom:30px}.engineering .section-heading>p{max-width:none}.service-row{gap:15px;padding:25px 0}.service-row h3{font-size:24px}.service-row p{font-size:14px}.arrow-button{width:42px;height:42px}.row-number{font-size:10px}.service-footer{display:block}.service-footer .button{margin-top:24px}.steps{grid-template-columns:1fr;gap:0;margin:32px 0}.steps li{display:grid;grid-template-columns:32px 1fr;column-gap:15px;padding:18px 0}.steps span{grid-row:1/3}.steps h3{margin:0 0 5px}.steps p{grid-column:2;margin:0}.deliverable{grid-template-columns:1fr;padding:25px;gap:22px}.document-symbol{display:none}.team{padding:65px 0;grid-template-columns:1fr;gap:12px}.team-lead{font-size:21px}.experience{font-size:70px}.faq{padding:65px 0}.faq details{padding:20px 0}.faq summary{font-size:18px}.faq details p{font-size:15px}.request-layout{grid-template-columns:1fr;gap:35px}.request-intro h2{font-size:48px}.request-intro h2 br{display:none}.request-intro h2 br:after{content:' '}.request-intro>p:not(.eyebrow){max-width:none}.local-note{max-width:none;margin-top:25px}.form-grid{grid-template-columns:1fr}.request-preview{padding:20px}.footer{flex-direction:column;gap:20px;padding:35px 0}.footer p{max-width:none;margin:0}.footer small{margin-top:10px}.button{padding:15px 18px}.request form>.button{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}@media print{body{background:white;color:#172127}.preview-bar,.header,.hero-art,.filters,.catalog-pick,.arrow-button,.actions,.footer,.skip{display:none}.wrap{width:100%}.light-section{background:white}.hero,.engineering,.team,.faq,.light-section{padding:20px 0}.hero{display:block;min-height:0}.team,.request-layout{display:block}h1{font-size:40px}h2{font-size:28px}em,.eyebrow{color:#74501c}.request form{display:none}.request form:has(.request-preview:not([hidden])){display:block}.request form:has(.request-preview:not([hidden]))>label,.request form>.form-grid,.request form>.small,.request form>.button{display:none}.request-preview button{display:none}.request-preview{break-inside:avoid}.faq details{display:none}.discipline{display:none}}

/* Static experience statement supplied by the owner; no automatic counter. */
.sample-banner{background:#e9b45b;color:#182329;border-top:1px solid #f5c877;border-bottom:1px solid #b18442}
.sample-banner-inner{display:grid;grid-template-columns:1fr 1.15fr;gap:65px;align-items:center;padding:46px 0}
.sample-number{font-size:clamp(80px,9vw,132px);line-height:1;letter-spacing:-.065em;font-weight:600;white-space:nowrap}
.sample-number span{font-weight:300;color:#785320;margin-left:8px}
.sample-copy{border-left:1px solid #9e773e;padding-left:40px}
.sample-copy p{font-size:10px;letter-spacing:.18em;margin:0 0 13px;color:#594425;font-weight:650}
.sample-copy h2{font-size:clamp(24px,2.5vw,36px);line-height:1.2;margin:0;max-width:590px;letter-spacing:-.025em}
@media(max-width:760px){.sample-banner-inner{grid-template-columns:1fr;gap:23px;padding:33px 0}.sample-number{font-size:76px}.sample-copy{border-left:0;border-top:1px solid #9e773e;padding:22px 0 0}.sample-copy h2{font-size:26px}.sample-copy p{font-size:9px}}
@media print{.sample-banner-inner{padding:18px 0;gap:25px}.sample-number{font-size:60px}.sample-copy h2{font-size:22px}.sample-banner{break-inside:avoid}}

/* Public catalog navigation */
.group-browser{border-top:1px solid #bdc5c6;padding:18px 0 24px}.group-browser summary{cursor:pointer;font-size:16px;font-weight:600}.group-navigation{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.group-choice{border:1px solid #b2bcba;background:transparent;color:var(--dark);padding:8px 12px;font-size:12px;text-align:left}.group-choice:hover,.group-choice[aria-pressed=true]{background:var(--dark);color:var(--paper);border-color:var(--dark)}.catalog .filters{flex-wrap:wrap;gap:18px}.catalog .filters label{flex:1 1 190px;width:auto}.catalog .filters input{margin-bottom:0}.catalog-pagination{display:flex;justify-content:space-between;gap:18px;margin-top:25px}.catalog-pagination button:disabled{opacity:.4;cursor:default}.catalog-pagination[hidden]{display:none}.catalog-item .grade{overflow-wrap:anywhere}@media(max-width:760px){.catalog .filters{display:grid;grid-template-columns:1fr}.group-navigation{gap:6px}.group-choice{padding:8px 10px}.catalog .filters .plain-button{grid-column:auto}.catalog .filters label{width:100%}}

/* First-screen slogan */
.hero-slogan{margin:-8px 0 20px;color:var(--amber);font-size:clamp(20px,2.2vw,28px);font-weight:600;line-height:1.3;letter-spacing:-.02em}

/* v017: standalone approved 3D hero; site copy and form remain HTML. */
.hero-art .hero-illustration{display:block;width:100%;height:auto;aspect-ratio:1177/1337;object-fit:contain}
@media(max-width:760px){.hero-art .hero-illustration{max-height:470px;object-fit:contain}}
/* v018: restrained hero typography; all other styles preserved. */
.hero-copy h1 {
  font-size: clamp(44px, 4.6vw, 64px);
  line-height: 1.12;
  font-weight: 550;
  letter-spacing: -.045em;
  margin-bottom: 30px;
}
.hero-copy h1 em {
  display: inline-block;
  margin-top: .1em;
}
@media (max-width: 760px) {
  .hero-copy h1 {
    font-size: clamp(36px, 9.8vw, 56px);
    line-height: 1.13;
    letter-spacing: -.04em;
    margin-bottom: 26px;
  }
}

/* v020: compact remaining hero copy after removing the two requested blocks. */
.hero-copy .hero-slogan{margin:0 0 20px}

/* v021: small supplied molecular illustration above the hero eyebrow. */
.hero-copy .hero-mark{display:block;width:140px;max-width:100%;height:auto;object-fit:contain;margin:0 0 16px}
@media(max-width:760px){.hero-copy .hero-mark{width:112px;margin-bottom:14px}}

/* User refinement: transparent image on existing dark hero, with soft depth. */
.hero-copy .hero-mark{background:transparent;border:0;filter:drop-shadow(0 7px 10px rgba(0,0,0,.28))}

/* v022: larger first-screen illustration and a balanced, responsive type scale. */
.hero{padding-top:24px}
.hero-copy{align-self:start;min-width:0}
.hero-copy .hero-mark{width:clamp(240px,23vw,320px);margin-bottom:20px}
.hero-copy .eyebrow{font-size:13px;line-height:1.65;letter-spacing:.13em;margin-bottom:22px;max-width:100%}
.hero-copy .hero-slogan{font-size:clamp(30px,3vw,40px);line-height:1.2;margin-bottom:22px}
.hero-copy .hero-text{font-size:19px;line-height:1.6;max-width:460px;margin-bottom:0}
.hero-copy .actions{gap:20px 26px;margin-top:28px}
.hero-copy .button{font-size:16px;line-height:1.45;padding:18px 24px;gap:20px;max-width:100%}
.hero-copy .text-link{font-size:16px;line-height:1.5}
.hero-copy .hero-foot{font-size:13px;line-height:1.6;margin-top:32px;gap:12px 20px;flex-wrap:wrap}
.hero-art .art-caption{font-size:11px;line-height:1.5;gap:12px;flex-wrap:wrap}
@media(max-width:1100px) and (min-width:761px){
  .hero-copy .hero-mark{width:240px}
  .hero-copy .eyebrow{font-size:12px;letter-spacing:.09em}
  .hero-copy .hero-text{font-size:18px}
  .hero-copy .actions{gap:18px}
}
@media(max-width:760px){
  .hero{padding-top:20px}
  .hero-copy .hero-mark{width:clamp(180px,52vw,240px);margin-bottom:18px}
  .hero-copy .eyebrow{font-size:11px;line-height:1.7;letter-spacing:.09em;margin-bottom:20px}
  .hero-copy .hero-slogan{font-size:clamp(28px,7.8vw,36px);line-height:1.25;margin-bottom:20px}
  .hero-copy .hero-text{font-size:17px;line-height:1.6;max-width:460px}
  .hero-copy .actions{gap:20px;margin-top:26px}
  .hero-copy .button{font-size:15px;padding:16px 20px;gap:18px}
  .hero-copy .text-link{font-size:15px}
  .hero-copy .hero-foot{font-size:12px;margin-top:28px;gap:10px 16px}
  .hero-art .art-caption{font-size:9px}
}

/* v023: text starts at the top; the rings have a little more horizontal room. */
.hero{grid-template-columns:minmax(0,.95fr) minmax(0,1.13fr);column-gap:24px}
.hero-copy{align-self:start;margin-top:0;padding-top:0}
.hero-art{align-self:start}
.hero-art .hero-illustration{width:100%;height:auto;object-fit:contain}
@media(max-width:1100px) and (min-width:761px){
  .hero{grid-template-columns:minmax(0,1fr) minmax(0,1.08fr);column-gap:20px}
}
@media(max-width:760px){
  .hero{grid-template-columns:minmax(0,1fr);gap:28px}
  .hero-art{width:100%;max-width:540px;margin:0 auto}
  .hero-art .hero-illustration{max-height:none}
}

.hero-art .art-caption,.footer small{color:#b0bbc1}
.hero-copy .hero-foot{color:#a6b1b6}

/* v028: sports-tire background belongs to the document and scrolls with it. */
body{position:relative;background:#282e32;isolation:isolate}
body::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background-image:linear-gradient(rgba(16,23,27,.32),rgba(16,23,27,.32)),url("assets/sport-tread-v026.webp");background-position:center;background-size:cover;background-repeat:no-repeat}
@media print{body{background:white}body::before{display:none}}

/* v029: viewport-scale tread scrolls normally; each dark section fades to graphite. */
body{--tread-width:max(100vw,177.68vh)}
body::before{bottom:auto;height:max(100vh,56.28vw);background-size:cover;mask-image:linear-gradient(#000 calc(100% - 96px),transparent);-webkit-mask-image:linear-gradient(#000 calc(100% - 96px),transparent)}
.engineering,.team,.faq,.footer{background-color:#282e32;background-image:linear-gradient(to bottom,#282e32 0,rgba(40,46,50,0) 72px,rgba(40,46,50,0) calc(100% - 72px),#282e32 100%),linear-gradient(rgba(16,23,27,.32),rgba(16,23,27,.32)),url("assets/sport-tread-v026.webp");background-size:100% 100%,100% 100%,var(--tread-width) auto;background-position:center top;background-repeat:no-repeat}
@media print{.engineering,.team,.faq,.footer{background:white}}

/* v030: soften only decorative background layers; content remains unfiltered. */
body::before{filter:blur(4px) contrast(.8)}
.engineering,.team,.faq,.footer{position:relative;isolation:isolate;background-image:none}
.engineering::before,.team::before,.faq::before,.footer::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;clip-path:inset(0);background-color:#282e32;background-image:linear-gradient(to bottom,#282e32 0,rgba(40,46,50,0) 72px,rgba(40,46,50,0) calc(100% - 72px),#282e32 100%),linear-gradient(rgba(16,23,27,.32),rgba(16,23,27,.32)),url("assets/sport-tread-v026.webp");background-size:100% 100%,100% 100%,var(--tread-width) auto;background-position:center top;background-repeat:no-repeat;filter:blur(4px) contrast(.8)}
@media print{.engineering::before,.team::before,.faq::before,.footer::before{display:none}}

/* v032: stronger warm-yellow text accents; original button and graphic colors stay intact. */
:root{--text-yellow:#edb454}
.hero .eyebrow,.engineering>.eyebrow,.team .eyebrow,.faq .eyebrow,
.hero-slogan,.experience,.row-number,.footer>div>a{color:var(--text-yellow)}
#engineering .section-heading>p{color:var(--text-yellow)}

/* Preview only. Move the photograph inside static background layers; no tiled edges. */
body{--tread-motion-width:max(calc(100vw + 96px),calc(177.68vh + 96px))}
body::before{
  background-size:100% 100%,var(--tread-motion-width) auto;
  background-position:center top,calc(50% - 32px) top;
  animation:lubravia-tread-hero 14s ease-in-out infinite alternate;
}
.engineering::before,.team::before,.faq::before,.footer::before{
  background-size:100% 100%,100% 100%,var(--tread-motion-width) auto;
  background-position:center top,center top,calc(50% - 32px) top;
  animation:lubravia-tread-section 14s ease-in-out infinite alternate;
}
@keyframes lubravia-tread-hero{
  from{background-position:center top,calc(50% - 32px) top}
  to{background-position:center top,calc(50% + 32px) top}
}
@keyframes lubravia-tread-section{
  from{background-position:center top,center top,calc(50% - 32px) top}
  to{background-position:center top,center top,calc(50% + 32px) top}
}
@media(prefers-reduced-motion:reduce){
  body::before{animation:none;background-position:center top,center top}
  .engineering::before,.team::before,.faq::before,.footer::before{animation:none;background-position:center top,center top,center top}
}
@media print{
  body::before,.engineering::before,.team::before,.faq::before,.footer::before{animation:none}
}

/* v035-preview: reveal the existing sports-tire grooves without sharpening content. */
body::before,.engineering::before,.team::before,.faq::before,.footer::before{filter:blur(1.8px) contrast(.92)}
/* Phone portrait screens previously magnified a narrow crop of the tread. */
@media(max-width:760px){body{--tread-motion-width:max(calc(100vw + 96px),900px)}}
/* Warm stone and linen surfaces, with quieter whites and readable secondary copy. */
:root{--paper:#e8e6df}
.light-section .deliverable,.light-section .request-preview{background:#dedfd7}
.light-section .document-symbol{background:#f0eee7}
.light-section input,.light-section select,.light-section textarea{background:#f2f0e9;border-color:#7d8989}
.light-section input::file-selector-button{background:#dedfd7}
.light-section .section-heading>p,.light-section .catalog-note,.light-section .small,
.light-section .catalog-item p,.light-section .catalog-item .group,.light-section .steps p,
.light-section .request-intro>p:not(.eyebrow),.light-section .deliverable>p{color:#526168}
.light-section .filters,.light-section .catalog-items,.light-section .catalog-item,
.light-section .group-browser,.light-section .steps li,.light-section .local-note,
.light-section .request-preview{border-color:#b3b8b2}
.light-section .group-choice,.light-section .catalog-pick{border-color:#7d8989}
@media print{.light-section{background:white}}

/* v036-preview: stronger secondary copy on the existing warm light surfaces. */
.light-section .section-heading>p,.light-section .catalog-note,.light-section .small,
.light-section .catalog-item p,.light-section .catalog-item .group,.light-section .steps p,
.light-section .request-intro>p:not(.eyebrow),.light-section .deliverable>p,
.light-section .local-note,.light-section label small,.light-section .hint{color:#35464c}
.light-section label,.light-section input,.light-section select,.light-section textarea{color:#142329}
.light-section input::placeholder,.light-section textarea::placeholder{color:#536168;opacity:1}
.light-section input::file-selector-button{color:#142329}
.contacts{padding:48px 0;border-top:1px solid var(--line)}
.contacts h2{font-size:30px;margin-bottom:12px}
.contacts-intro{color:#b0bbc1;font-size:15px;margin-bottom:26px}
.contact-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin:0}
.contact-grid>div{padding-top:16px;border-top:1px solid #56636a;min-width:0}
.contact-grid dt{color:#edb454;font-weight:600;font-size:16px;margin-bottom:6px}
.contact-grid dd{margin:0;color:#b0bbc1;font-size:14px;line-height:1.6}
@media(max-width:760px){.contacts{padding:36px 0}.contact-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 16px}}
@media(max-width:380px){.contact-grid{grid-template-columns:1fr}}