:root{
  --green:#0f5132;
  --green-2:#198754;
  --green-soft:#e9f7ef;
  --yellow:#ffe600;
  --yellow-dark:#d4be00;
  --ink:#1f2937;
  --muted:#667085;
  --line:#e5e7eb;
  --bg:#f6f8f7;
  --card:#ffffff;
  --danger:#b42318;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:linear-gradient(180deg,#eef6f1 0,#f8faf9 240px,#f6f8f7 100%);
}
button,input,select{font:inherit}
.topbar{
  position:sticky; top:0; z-index:20;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(15,81,50,.08);
  padding:max(10px,env(safe-area-inset-top)) 16px 10px;
}
.brand{max-width:760px;margin:0 auto;display:flex;align-items:center;gap:10px}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--green);color:#fff;font-weight:800;letter-spacing:-.5px
}
.brand strong{display:block;font-size:15px}
.brand span{display:block;font-size:12px;color:var(--muted);margin-top:1px}

.app-shell{max-width:760px;margin:0 auto;padding:18px 14px 44px}
.hero{
  display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:12px;
  padding:18px 4px 14px;
}
.eyebrow{
  display:inline-flex;background:var(--green-soft);color:var(--green);
  padding:6px 10px;border-radius:999px;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.05em
}
.hero h1{font-size:clamp(28px,8vw,44px);line-height:1.02;letter-spacing:-1.6px;margin:10px 0 10px}
.hero p{margin:0;color:var(--muted);font-size:14px;line-height:1.55}
.hero-image img{width:100%;max-height:210px;object-fit:contain;filter:drop-shadow(0 12px 16px rgba(0,0,0,.12))}
.calculator-card,.result-card,.info-card{
  background:var(--card);
  border:1px solid rgba(15,81,50,.08);
  border-radius:22px;
  box-shadow:0 12px 35px rgba(17,24,39,.07);
}
.calculator-card,.result-card{padding:18px}
.result-card{margin-top:16px}
.info-card{margin-top:16px;padding:18px}
.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.section-heading>div{display:flex;align-items:center;gap:10px}
.section-heading h2{margin:0;font-size:19px;letter-spacing:-.3px}
.step{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:var(--green);color:white;font-weight:800}
.secure,.badge-success{font-size:11px;font-weight:800;padding:6px 9px;border-radius:999px;background:#f2f4f7;color:#475467}
.badge-success{background:var(--green-soft);color:var(--green)}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:800;margin-bottom:7px}
.field label span{color:#d92d20}
.field small{display:block;color:var(--muted);font-size:11px;line-height:1.4;margin-top:6px}
.input-unit{display:grid;grid-template-columns:1fr 40px;align-items:center;border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden}
.input-unit:focus-within{border-color:#67b98b;box-shadow:0 0 0 4px rgba(25,135,84,.09)}
.input-unit input{border:0;outline:0;padding:15px 13px;min-width:0;font-size:16px}
.input-unit span{color:#667085;font-weight:800;text-align:center;border-left:1px solid var(--line);height:100%;display:grid;place-items:center}
select{
  width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;
  padding:14px 13px;outline:none;color:var(--ink)
}
select:focus{border-color:#67b98b;box-shadow:0 0 0 4px rgba(25,135,84,.09)}
.toggle-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  border:1px solid var(--line);border-radius:16px;padding:13px 14px;margin:4px 0 14px
}
.toggle-row strong{display:block;font-size:14px}
.toggle-row span{display:block;color:var(--muted);font-size:11px;margin-top:2px}
.switch{position:relative;width:48px;height:28px;flex:none}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;inset:0;background:#d0d5dd;border-radius:999px;transition:.2s}
.slider:before{content:"";position:absolute;width:22px;height:22px;left:3px;top:3px;border-radius:50%;background:white;box-shadow:0 2px 6px rgba(0,0,0,.2);transition:.2s}
.switch input:checked + .slider{background:var(--green-2)}
.switch input:checked + .slider:before{transform:translateX(20px)}
.notice{margin:4px 0 12px;padding:12px 13px;border-radius:14px;background:#fff6df;border:1px solid #f1d48b;color:#6b5600;font-size:12px;line-height:1.45}
.notice strong{display:block;margin-bottom:3px}
.error{min-height:18px;color:var(--danger);font-weight:700;font-size:12px;text-align:center;margin:5px 0}
.btn{
  appearance:none;border:0;border-radius:14px;padding:14px 16px;font-weight:800;cursor:pointer;
  transition:transform .08s ease,filter .15s ease;min-height:50px
}
.btn:active{transform:scale(.99)}
.btn-block{width:100%}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 8px 18px rgba(15,81,50,.18)}
.btn-whatsapp{background:#25d366;color:#073d1d}
.btn-ml{background:var(--yellow);color:#2d2d2d}
.btn-light{background:#f2f4f7;color:#344054}
.summary{border:1px solid var(--line);border-radius:16px;overflow:hidden}
.summary-row{display:flex;justify-content:space-between;gap:16px;padding:11px 13px;border-bottom:1px solid var(--line);font-size:13px}
.summary-row:last-child{border-bottom:0}
.summary-row span{color:var(--muted)}
.summary-row strong{text-align:right}
.price-box{
  margin-top:14px;border-radius:18px;padding:18px;
  background:linear-gradient(135deg,var(--green),#11623d);color:white
}
.price-box>span{display:block;font-size:12px;opacity:.8;text-transform:uppercase;letter-spacing:.06em;font-weight:800}
.price-box strong{display:block;font-size:34px;line-height:1;margin:7px 0 8px;letter-spacing:-1px}
.price-box small{opacity:.85}
.listing-box{
  margin-top:14px;padding:13px;border-radius:15px;background:#effaf3;border:1px solid #b7e4c7;
  display:flex;gap:10px;align-items:flex-start
}
.listing-icon{width:28px;height:28px;border-radius:50%;background:var(--green-2);color:#fff;display:grid;place-items:center;font-weight:900;flex:none}
.listing-box strong{display:block;font-size:13px}
.listing-box span{display:block;color:#48615a;font-size:11px;line-height:1.45;margin-top:2px}
.actions{display:grid;gap:9px;margin-top:14px}
.fineprint{font-size:10px;color:#98a2b3;text-align:center;line-height:1.45;margin:12px 4px 0}
.info-card h3{margin:0 0 10px;font-size:16px}
.info-card ul{padding-left:18px;margin:0;color:#667085;font-size:12px;line-height:1.55}
.hidden{display:none!important}

@media (max-width:520px){
  .app-shell{padding:12px 12px 34px}
  .hero{grid-template-columns:1fr;position:relative;padding-top:14px}
  .hero-image{position:absolute;right:-2px;top:4px;width:120px;opacity:.16;pointer-events:none}
  .hero h1{max-width:300px}
  .hero p{max-width:92%}
  .calculator-card,.result-card{padding:15px;border-radius:19px}
  .field-grid{grid-template-columns:1fr 1fr;gap:9px}
  .input-unit input{padding:14px 11px}
  .section-heading{align-items:flex-start}
  .secure{display:none}
}
@media print{
  body{background:#fff}
  .topbar,.hero,.calculator-card,.info-card,.actions{display:none!important}
  .app-shell{max-width:none;padding:0}
  .result-card{display:block!important;box-shadow:none;border:0}
}

.product-preview{
  position:relative;
}
.product-preview img{
  transition:opacity .18s ease, transform .18s ease;
}
.product-preview img.image-changing{
  opacity:.35;
  transform:scale(.985);
}
.photo-caption{
  position:absolute;
  left:50%;
  bottom:2px;
  transform:translateX(-50%);
  max-width:92%;
  padding:5px 9px;
  border-radius:999px;
  background:rgba(255,255,255,.9);
  color:#667085;
  font-size:10px;
  font-weight:700;
  text-align:center;
  white-space:nowrap;
  box-shadow:0 2px 8px rgba(0,0,0,.06);
}
.video-card{
  margin-top:16px;
  padding:18px;
  background:var(--card);
  border:1px solid rgba(15,81,50,.08);
  border-radius:22px;
  box-shadow:0 12px 35px rgba(17,24,39,.07);
}
.video-intro{
  margin:-4px 0 14px;
  color:var(--muted);
  font-size:12px;
  line-height:1.55;
}
.video-wrap{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  border-radius:16px;
  background:#101828;
}
.video-wrap iframe{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  border:0;
}
.video-placeholder{
  aspect-ratio:16/9;
  border-radius:16px;
  background:linear-gradient(135deg,#101828,#344054);
  color:#fff;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  text-align:center;
  padding:24px;
}
.video-placeholder .play-icon{
  width:54px;
  height:54px;
  border-radius:50%;
  display:grid;
  place-items:center;
  padding-left:3px;
  background:#fff;
  color:var(--green);
  font-size:20px;
  margin-bottom:12px;
  box-shadow:0 8px 24px rgba(0,0,0,.25);
}
.video-placeholder strong{font-size:16px}
.video-placeholder span{
  max-width:300px;
  margin-top:5px;
  color:#d0d5dd;
  font-size:11px;
  line-height:1.45;
}
@media (max-width:520px){
  .hero{
    grid-template-columns:1fr;
  }
  .hero-image{
    position:relative;
    right:auto;
    top:auto;
    width:100%;
    opacity:1;
    margin-top:10px;
    background:#fff;
    border-radius:18px;
    padding:8px;
    border:1px solid var(--line);
  }
  .hero-image img{
    display:block;
    width:100%;
    max-height:280px;
  }
  .photo-caption{
    bottom:10px;
  }
  .video-card{
    padding:15px;
    border-radius:19px;
  }
}