:root{
  --fog:#edf1f2; --mist:#d3dfe2; --petrol:#0f3340; --ink:#0b1a20; --steel:#546b74;
  --yellow:#f0b429; --yellow-d:#c98f0a; --radius:18px;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --w:min(1320px,92%);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--fog);line-height:1.65;font-size:1.0625rem;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:inherit}
h1,h2,h3{line-height:1.08;letter-spacing:-.03em;margin:0 0 .5em;font-weight:800}
h1{font-size:clamp(2.7rem,6vw,5.4rem)}
h2{font-size:clamp(2rem,4vw,3.4rem)}
h3{font-size:1.3rem;letter-spacing:-.01em}
p{margin:0 0 1em}
:focus-visible{outline:3px solid var(--yellow-d);outline-offset:3px}
.container{width:var(--w);margin-inline:auto}
.section{padding:clamp(4.5rem,9vw,8rem) 0}

/* Buttons */
.btn{display:inline-block;background:var(--yellow);color:var(--ink);font-weight:700;text-decoration:none;padding:.95rem 1.7rem;border-radius:999px;border:2px solid var(--yellow);cursor:pointer;font:inherit;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 0 -2px var(--yellow-d)}
.btn-ghost{background:transparent;border-color:var(--petrol);color:var(--petrol)}
.btn-ghost:hover{background:var(--petrol);color:var(--fog);box-shadow:none}
.btn-sm{padding:.55rem 1.2rem}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(237,241,242,.96);border-bottom:1px solid rgba(15,51,64,.12);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 6px 24px rgba(11,26,32,.08)}
.bar{display:flex;align-items:center;justify-content:space-between;min-height:72px}
.brand{display:flex;align-items:center;gap:.75rem;text-decoration:none;font-weight:800;letter-spacing:-.02em;line-height:1.1}
.brand small{display:block;font-weight:500;font-size:.78rem;color:var(--steel);letter-spacing:0}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--petrol);color:var(--yellow);font-size:.95rem}
.nav{display:flex;align-items:center;gap:2rem}
.nav a:not(.btn){text-decoration:none;font-weight:600;position:relative}
.nav a:not(.btn)::after{content:"";position:absolute;left:0;bottom:-4px;width:100%;height:2px;background:var(--yellow-d);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.nav a:not(.btn):hover::after{transform:scaleX(1)}
.burger{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;position:relative}
.burger span{position:absolute;left:10px;right:10px;height:3px;background:var(--petrol);border-radius:2px;transition:transform .3s}
.burger span:first-child{top:16px}.burger span:last-child{top:25px}
.burger[aria-expanded="true"] span:first-child{transform:translateY(4.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-4.5px) rotate(-45deg)}

/* Hero */
.hero{padding-top:clamp(2.5rem,6vw,5rem)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(2rem,5vw,5rem);align-items:center}
.tag{display:inline-block;background:var(--mist);color:var(--petrol);font-weight:600;font-size:.95rem;padding:.35rem 1rem;border-radius:999px;margin-bottom:1.5rem}
.lead{font-size:1.25rem;color:var(--steel);max-width:36em;margin-bottom:2rem}
.cta-row{display:flex;flex-wrap:wrap;gap:1rem}
.hero-art{position:relative;background:var(--petrol);border-radius:var(--radius) var(--radius) 120px var(--radius);min-height:520px;display:grid;place-items:center;overflow:hidden;color:var(--fog)}
.sun{position:absolute;width:380px;height:380px;border-radius:50%;background:var(--yellow);top:-90px;right:-110px}
.bike-big{position:relative;width:92%;height:auto;aspect-ratio:400/240;color:var(--fog);margin-top:60px;animation:roll 1.2s cubic-bezier(.2,.8,.2,1) both}
.chip{position:absolute;left:1.5rem;bottom:1.5rem;background:var(--fog);color:var(--ink);border-radius:12px;padding:.8rem 1.1rem;font-size:.95rem;line-height:1.35}
.chip strong{display:block}
@keyframes roll{from{transform:translateX(60px);opacity:0}to{transform:none;opacity:1}}
.facts{display:grid;grid-template-columns:repeat(4,1fr);margin-top:clamp(3rem,6vw,5rem);border-top:3px solid var(--petrol)}
.facts p{margin:0;padding:1.4rem 1.4rem 1.6rem 0;color:var(--steel);font-size:.98rem}
.facts p+p{padding-left:1.4rem;border-left:1px solid rgba(15,51,64,.18)}
.facts strong{display:block;color:var(--ink);font-size:1.15rem;margin-bottom:.2rem}

/* About */
.about{background:#fff}
.about-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(2rem,6vw,6rem);align-items:start}
.about-head{position:sticky;top:110px}
.art-block{margin-top:2rem;background:var(--mist);border-radius:var(--radius);padding:2rem 1.5rem 1rem;color:var(--petrol)}
.art-block svg{width:100%;height:auto;aspect-ratio:400/240}
.art-block span{display:block;text-align:right;font-size:.9rem;color:var(--steel)}
.big{font-size:clamp(1.3rem,2.2vw,1.75rem);line-height:1.45;letter-spacing:-.01em;font-weight:600}
.cols{columns:2;column-gap:2.5rem;color:#2c4049;margin:2rem 0}
.cols p{break-inside:avoid}
.panels{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:1rem}
.panel{padding:1.6rem;border-radius:var(--radius);transition:transform .25s}
.panel:hover{transform:translateY(-4px)}
.panel p{margin:0;font-size:.98rem}
.p-yellow{background:var(--yellow)}
.p-dark{background:var(--petrol);color:var(--fog);border-radius:var(--radius) var(--radius) 50px var(--radius)}
.p-line{border:2px solid var(--petrol)}

/* Services */
.sec-head{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:end;margin-bottom:3rem}
.sec-head h2{margin:0}
.sec-head p{color:var(--steel);margin:0;max-width:34em}
.tabs{display:grid;grid-template-columns:.8fr 1.2fr;gap:1.5rem}
.tablist{display:flex;flex-direction:column;gap:.5rem}
.tablist button{font:inherit;font-weight:700;text-align:left;padding:1.15rem 1.4rem;border:2px solid transparent;border-radius:14px;background:#fff;color:var(--ink);cursor:pointer;transition:background .2s,transform .2s,border-color .2s}
.tablist button:hover{transform:translateX(6px);border-color:var(--mist)}
.tablist button[aria-selected="true"]{background:var(--petrol);color:var(--fog);transform:translateX(10px)}
.tabpanels article{background:var(--mist);border-radius:var(--radius);padding:clamp(1.8rem,4vw,3.2rem);min-height:100%;animation:fade .45s ease}
.tabpanels article[hidden]{display:none}
.tabpanels h3{font-size:clamp(1.6rem,3vw,2.3rem)}
.tabpanels p{font-size:1.15rem;color:#2c4049}
.tabpanels ul{list-style:none;padding:0;margin:1.8rem 0 0;display:grid;grid-template-columns:1fr 1fr;gap:.7rem 1.5rem}
.tabpanels li{padding-left:1.7rem;position:relative;font-weight:600}
.tabpanels li::before{content:"";position:absolute;left:0;top:.5em;width:.8rem;height:.8rem;border-radius:50%;background:var(--yellow);box-shadow:0 0 0 3px var(--petrol) inset}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* Why */
.why{background:var(--petrol);color:var(--fog)}
.why .sec-head p{color:#a9c1c8}
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:1rem}
.b{padding:2rem;border-radius:var(--radius);background:rgba(255,255,255,.07);transition:background .25s,transform .25s}
.b:hover{background:rgba(255,255,255,.13);transform:translateY(-4px)}
.b p{margin:0;color:#c3d5da}
.b1{grid-column:span 4;background:var(--yellow);color:var(--ink);padding:2.6rem}
.b1:hover{background:#f5c04a}
.b1 h3{font-size:clamp(1.8rem,3vw,2.6rem)}
.b1 p{color:#2a2410;font-size:1.15rem;max-width:34em}
.b2{grid-column:span 2}
.b3,.b4,.b5{grid-column:span 2}
.steps{list-style:none;counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;margin:4rem 0 0;padding:2.5rem 0 0;border-top:1px solid rgba(255,255,255,.2)}
.steps li{counter-increment:s;position:relative;padding-left:4rem;color:#c3d5da}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:2.8rem;height:2.8rem;border-radius:50%;background:var(--yellow);color:var(--ink);font-weight:800;display:grid;place-items:center}
.steps strong{display:block;color:var(--fog);font-size:1.2rem}

/* Contact */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(2rem,6vw,6rem);align-items:start}
.contact-info p{color:var(--steel);max-width:30em}
dl{margin:2rem 0 0}
dl div{padding:1.1rem 0;border-top:1px solid rgba(15,51,64,.2);display:grid;grid-template-columns:9rem 1fr;gap:1rem}
dl div:last-child{border-bottom:1px solid rgba(15,51,64,.2)}
dt{font-weight:700;color:var(--steel)}
dd{margin:0;font-weight:600}
dd a{color:var(--petrol)}
.form{background:#fff;border-radius:var(--radius);padding:clamp(1.6rem,4vw,3rem)}
.field{margin-bottom:1.4rem}
label{font-weight:700;display:block;margin-bottom:.3rem}
input[type=text],input[type=email],select,textarea{width:100%;font:inherit;padding:.75rem 0;border:0;border-bottom:2px solid var(--mist);background:transparent;color:var(--ink);border-radius:0;transition:border-color .2s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--petrol)}
textarea{resize:vertical}
.field.invalid input,.field.invalid textarea{border-color:#b3261e}
.err{display:block;color:#b3261e;font-size:.9rem;min-height:1.2em}
.check{display:flex;gap:.7rem;font-weight:400;font-size:.95rem;color:#2c4049;align-items:flex-start}
.check input{margin-top:.3rem;accent-color:var(--petrol);width:1.1rem;height:1.1rem}
.form .btn{margin-top:.8rem}
.status{margin:1rem 0 0;font-weight:600;color:var(--petrol)}

/* Footer */
.footer{background:var(--ink);color:#b7c8ce;padding:3.5rem 0 1.5rem}
.foot{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:2rem;padding-bottom:2rem;border-bottom:1px solid rgba(255,255,255,.15)}
.foot strong{color:#fff;display:block;margin-bottom:.5rem}
.foot p{margin:0}
.foot a{text-decoration:none}.foot a:hover{color:var(--yellow)}
.copy{padding-top:1.5rem;font-size:.9rem}

/* Reveal (single, quiet scroll effect) */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}

/* Responsive */
@media (max-width:1000px){
  .hero-grid,.about-grid,.tabs,.contact-grid,.sec-head{grid-template-columns:1fr}
  .about-head{position:static}
  .hero-art{min-height:400px}
  .facts{grid-template-columns:1fr 1fr}
  .facts p:nth-child(3){padding-left:0;border-left:0}
  .panels{grid-template-columns:1fr}
  .tablist{flex-direction:row;flex-wrap:wrap}
  .tablist button{flex:1 1 auto}
  .tablist button:hover,.tablist button[aria-selected="true"]{transform:none}
  .b1,.b2,.b3,.b4,.b5{grid-column:span 6}
  .b3,.b4{grid-column:span 3}
  .steps{grid-template-columns:1fr}
}
@media (max-width:760px){
  .burger{display:block}
  .nav{position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:flex-start;gap:1.2rem;background:var(--fog);padding:1.5rem 4%;border-bottom:1px solid var(--mist);display:none}
  .nav.open{display:flex}
  .cols{columns:1}
  .tabpanels ul{grid-template-columns:1fr}
  .b3,.b4{grid-column:span 6}
  dl div{grid-template-columns:1fr;gap:.2rem}
  .foot{grid-template-columns:1fr}
  .sun{width:260px;height:260px}
  .hero-art{border-radius:var(--radius) var(--radius) 70px var(--radius)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
}