:root{
  --bg:#0b0f12;
  --panel:#0f1419;
  --muted:#9aa3ad;
  --text:#e7edf3;
  --brand:#80ed99;
  --brand-2:#4ade80;
  --danger:#ef4444;
  --ok:#22c55e;
  --ring: 0 0 0 3px rgba(128,237,153,.25);
  --radius:14px;
  --shadow:0 10px 30px rgba(0,0,0,.25);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:Inter,system-ui,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(74,222,128,.15), transparent 60%),
    radial-gradient(1200px 500px at 110% 10%, rgba(128,237,153,.12), transparent 60%),
    var(--bg);
}

/* Layout helpers */
.container{width:min(1100px,92vw);margin-inline:auto}
.section{padding:72px 0}
.section.alt{background:linear-gradient(180deg, rgba(255,255,255,.02), transparent 70%)}
.section-title{
  text-align:center;font-size:clamp(24px,3.5vw,36px);margin:0 0 28px;font-weight:800;
}

/* Header */
.site-header{
  position:sticky;top:0;z-index:30;
  backdrop-filter:saturate(1.2) blur(10px);
  background:rgba(15,20,25,.55);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.header-grid{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;padding:12px 0}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:800}
.brand img{height:42px;width:auto;border-radius:10px;box-shadow:var(--shadow)}
.main-nav{display:flex;gap:18px;align-items:center}
.main-nav a{color:var(--text);text-decoration:none;opacity:.9}
.main-nav a:hover{opacity:1}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer}
.nav-toggle .bar{width:24px;height:2px;background:var(--text);display:block;border-radius:2px}

.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 18px;border-radius:12px;text-decoration:none;font-weight:700;
  transition:.25s transform,.25s box-shadow,.25s background,.25s opacity;
}
.btn-primary{background:linear-gradient(90deg,var(--brand),var(--brand-2));color:#0a0d0f;box-shadow:0 6px 20px rgba(128,237,153,.35)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(128,237,153,.45)}
.btn-primary.small{padding:8px 12px}
.btn-ghost{border:1px solid rgba(255,255,255,.15);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.06)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:80px 0}
.hero-bg{
  position:absolute;inset:-30% -10% -10% -10%;z-index:-1;
  background:
    radial-gradient(800px 400px at 15% 20%, rgba(128,237,153,.25), transparent 60%),
    radial-gradient(800px 400px at 85% 10%, rgba(74,222,128,.22), transparent 60%);
  filter:blur(10px);
}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
.hero-copy h1{font-size:clamp(28px,4.8vw,46px);margin:0 0 12px;line-height:1.1}
.highlight{background:linear-gradient(90deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(16px,2.5vw,18px);opacity:.95}
.badges{display:flex;gap:14px;flex-wrap:wrap;margin:18px 0 8px;padding:0;list-style:none}
.cta-row{display:flex;gap:12px;margin:16px 0 12px;flex-wrap:wrap}
.trust-strip{display:flex;gap:18px;flex-wrap:wrap;margin-top:8px;font-weight:700}
.disclaimer{opacity:.7;font-size:12px}
.hero-visual{display:flex;justify-content:center}
.car-ill{width:min(420px,80vw);filter:drop-shadow(0 12px 40px rgba(0,0,0,.4))}

/* Features */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.feature{background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.01));
  border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.feature .icon{font-size:28px;margin-bottom:8px}
.feature h3{margin:0 0 6px;font-size:18px}
.feature p{margin:0;color:var(--muted)}

/* Calc */
.calc-card{
  display:grid;grid-template-columns:1.1fr .9fr;gap:18px;
  border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);
  padding:18px;background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.01));
  box-shadow:var(--shadow)
}
.calc-controls label{display:block;margin-bottom:14px;font-weight:600}
.calc-controls input[type="range"]{width:100%}
.calc-controls output{display:inline-block;min-width:40px;margin-left:6px;color:var(--brand)}
.calc-result{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:end}
.calc-result h3{margin:0 0 6px}
.calc-result .sum{font-size:clamp(22px,3.8vw,34px);margin:0;font-weight:800}

/* FAQ */
.faq details{
  background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.01));
  border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);
  padding:14px 16px;margin-bottom:10px
}
.faq summary{cursor:pointer;font-weight:700}
.faq p{margin:8px 0 0;color:var(--muted)}

/* Form */
.card{
  background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.01));
  border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)
}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.form-grid .full{grid-column:1/-1}
label{display:flex;flex-direction:column;gap:6px;font-weight:600}
input,select,textarea{
  background:#0d1216;border:1px solid rgba(255,255,255,.08);color:var(--text);
  padding:12px;border-radius:10px;font:inherit;outline:none;
}
input:focus,select:focus,textarea:focus{box-shadow:var(--ring)}
.honeypot{position:absolute;left:-9999px;opacity:0}
.consent{align-items:flex-start;gap:10px}
.consent input{margin-top:3px}
.link{color:var(--brand);text-decoration:underline}
.form-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:4px}
.form-note{color:var(--muted);margin:10px 0 0}
.form-status{min-height:22px;margin-top:8px;font-weight:700}
.form-status.ok{color:var(--ok)}
.form-status.err{color:var(--danger)}

/* Sticky bar (mobile) */
.sticky-bar{
  position:fixed;bottom:12px;left:0;right:0;display:none;gap:10px;
  width:min(640px,92vw);margin:0 auto;justify-content:center;z-index:40;
}
.sticky-bar .btn-primary,.sticky-bar .btn-ghost{flex:1}

/* Footer */
.site-footer{border-top:1px solid rgba(255,255,255,.08);margin-top:28px}
.foot-grid{display:grid;grid-template-columns:1.2fr 1fr auto;gap:16px;padding:18px 0}
.legal{text-align:center;color:var(--muted);font-size:13px;padding:8px 0 24px}
.to-top a{color:var(--muted);text-decoration:none}
.to-top a:hover{color:var(--text)}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease}
.reveal.visible{opacity:1;transform:none}
.delay-1{transition-delay:.08s}
.delay-2{transition-delay:.16s}
.delay-3{transition-delay:.24s}
.delay-4{transition-delay:.32s}

/* Responsive */
@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr}
  .calc-card{grid-template-columns:1fr}
}
@media (max-width: 860px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .main-nav{position:absolute;inset:60px 0 auto 0;background:rgba(15,20,25,.92);padding:12px 16px;display:none;flex-direction:column}
  .main-nav a{padding:10px 0}
  .nav-toggle{display:flex}
}
@media (max-width: 640px){
  .form-grid{grid-template-columns:1fr}
  .sticky-bar{display:flex}
  .foot-grid{grid-template-columns:1fr}
}