:root{
  --bg:#e8e2d6;
  --panel:#f7f4ee;
  --panel2:#ffffff;
  --ink:#1b1b1f;
  --muted:#5a5a66;
  --accent:#1a7f37;
  --accent2:#0f5f28;
  --shadow:rgba(0,0,0,.22);
  --shadow2:rgba(0,0,0,.14);
  --radius:18px;
  --max:1040px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:linear-gradient(180deg,#f3efe7, var(--bg))}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}
.wrapper{max-width:var(--max);margin:0 auto;padding:18px}
.topbar{
  position:sticky;top:0;z-index:50;
  background:linear-gradient(180deg,#ffffff,#f3f0e9);
  border-bottom:1px solid rgba(0,0,0,.08);
  box-shadow:0 8px 20px var(--shadow2);
}
.topinner{max-width:var(--max);margin:0 auto;padding:10px 18px;display:flex;align-items:center;gap:12px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand img{width:60px;height:60px;border-radius:14px;box-shadow:0 10px 18px var(--shadow2)}
.brand span{font-weight:800;letter-spacing:.2px}
.navtoggle{
  margin-left:auto;
  width:44px;height:44px;border-radius:14px;
  border:1px solid rgba(0,0,0,.18);
  background:linear-gradient(180deg,#ffffff,#e7e1d4);
  box-shadow:inset 0 2px 0 rgba(255,255,255,.8), 0 8px 16px var(--shadow2);
  display:grid;place-items:center;cursor:pointer;
}
.burger{width:20px;height:14px;position:relative}
.burger i{position:absolute;left:0;right:0;height:2px;background:var(--ink);border-radius:2px}
.burger i:nth-child(1){top:0}
.burger i:nth-child(2){top:6px}
.burger i:nth-child(3){top:12px}
.navpanel{
  max-width:var(--max);margin:0 auto;
  padding:0 18px 10px 18px;
  display:none;
}
.navpanel.open{display:block}
.navpanel a{
  display:block;
  padding:12px 14px;
  border-radius:14px;
  background:linear-gradient(180deg,#ffffff,#f2eee6);
  border:1px solid rgba(0,0,0,.10);
  box-shadow:inset 0 2px 0 rgba(255,255,255,.8), 0 8px 16px var(--shadow2);
  margin-top:10px;
  font-weight:650;
}
.breadcrumbs{
  margin:14px 0 0;
  font-size:14px;
  color:var(--muted);
}
.breadcrumbs a{color:var(--muted)}
.panel{
  margin:16px 0;
  padding:18px;
  border-radius:var(--radius);
  background:linear-gradient(180deg,var(--panel2),var(--panel));
  border:1px solid rgba(0,0,0,.10);
  box-shadow:inset 0 2px 0 rgba(255,255,255,.8), 0 16px 24px var(--shadow2);
}
.panel h1{margin:0 0 10px;font-size:30px;line-height:1.12}
.panel h2{margin:0 0 10px;font-size:22px}
.panel p{margin:0;color:var(--ink);line-height:1.55}
.muted{color:var(--muted)}
.heroimg{
  width:100%;
  height:auto;
  border-radius:18px;
  border:1px solid rgba(0,0,0,.12);
  box-shadow:0 18px 26px var(--shadow2);
  display:block;
}
.offers{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  border:2px solid rgba(0,0,0,.25);
  border-radius:16px;
  overflow:hidden;
  background:#fff;
}
.offers tr{border-bottom:1px solid rgba(0,0,0,.08)}
.offers td{
  padding:14px 10px;
  vertical-align:middle;
  text-align:center;
}
.offerlogo img{width:160px;height:50px;object-fit:contain;display:block;margin:0 auto}
.offertext{font-weight:650}
.btn{
  display:inline-block;
  padding:10px 14px;
  border-radius:14px;
  background:linear-gradient(180deg,#2ecc71,var(--accent));
  color:#fff;
  font-weight:800;
  border:1px solid rgba(0,0,0,.18);
  box-shadow:inset 0 2px 0 rgba(255,255,255,.35), 0 10px 18px var(--shadow2);
}
.btn:hover{text-decoration:none;filter:brightness(1.03)}
.calcgrid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;align-items:end}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.field input{
  width:100%;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid rgba(0,0,0,.18);
  background:linear-gradient(180deg,#ffffff,#f3f0e9);
  box-shadow:inset 0 2px 0 rgba(255,255,255,.7);
  font-size:16px;
}
.calcactions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.result{
  margin-top:12px;
  padding:12px 14px;
  border-radius:14px;
  background:linear-gradient(180deg,#ffffff,#eef6f1);
  border:1px solid rgba(0,0,0,.10);
  box-shadow:inset 0 2px 0 rgba(255,255,255,.7);
  color:var(--ink);
}
.accordion{border-radius:16px;border:1px solid rgba(0,0,0,.12);overflow:hidden;background:#fff}
.accitem + .accitem{border-top:1px solid rgba(0,0,0,.08)}
.acchead{
  width:100%;
  text-align:left;
  padding:14px 14px;
  border:0;
  background:linear-gradient(180deg,#ffffff,#f3f0e9);
  cursor:pointer;
  font-weight:800;
}
.accbody{
  display:none;
  padding:14px 14px 16px 14px;
  color:var(--ink);
  line-height:1.55;
  background:#fff;
}
.accitem.open .accbody{display:block}
.footer{
  margin-top:18px;
  padding:18px 0 26px;
  border-top:1px solid rgba(0,0,0,.10);
  color:var(--muted);
  font-size:14px;
}
.footer a{color:var(--muted);font-weight:650}
.footer .sep{margin:0 8px;color:rgba(0,0,0,.22)}
@media (max-width: 820px){
  .calcgrid{grid-template-columns:1fr}
  .offers td{display:block;width:100%}
  .offers tr{display:block}
  .offers td + td{border-top:1px dashed rgba(0,0,0,.12)}
}