:root{
  /* Jetton Casino Promo palette (from screenshot) */
  --bg: #0F1115;
  --surface: #FFFFFF;
  --text: #0F172A;
  --muted: #6B7280;
  --header: #111214;
  --accent: #BBEB00;         /* neon lime */
  --accent-hover: #A6D300;
  --border: #E5E7EB;
  --shadow: 0 10px 24px rgba(2,6,23,.08);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: #F5F7FB;
  color: var(--text);
}

.container{
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.header{
  background: radial-gradient(80% 140% at 50% 0%, rgba(187,235,0,.10), rgba(17,18,20,0) 60%), var(--header);
  padding: 18px 0;
  box-shadow: 0 2px 10px rgba(0,0,0,.22);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
}
.brand img{height:34px; width:auto; display:block}

.header__auth{
  display:flex;
  align-items:center;
  gap: 12px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 800;
  text-decoration:none;
  border: 1px solid transparent;
  transition: transform .15s ease, background-color .15s ease, border-color .15s ease;
  white-space: nowrap;
}
.btn:active{transform: translateY(1px)}
.btn--primary{
  background: var(--accent);
  color: #0B0E14;
  border-color: var(--accent);
  box-shadow: 0 8px 18px rgba(187,235,0,.18);
}
.btn--primary:hover{background: var(--accent-hover); border-color: var(--accent-hover)}
.btn--ghost{
  background: rgba(255,255,255,.06);
  color: #FFFFFF;
  border-color: rgba(255,255,255,.14);
}
.btn--ghost:hover{border-color: rgba(255,255,255,.24); background: rgba(255,255,255,.10)}

/* Main */
.main{padding: 42px 0 56px}
.bonus-blocks{
  display:flex;
  flex-direction:column;
  gap: 22px;
  align-items:center;
}

/* Card */
.gift-block{
  width:100%;
  max-width: 640px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 28px 26px;
  text-decoration:none;
  color: inherit;
  transition: transform .2s ease, box-shadow .2s ease;
}
.gift-block:hover{
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(2,6,23,.12);
}
.gift-block__icon{
  display:flex;
  justify-content:center;
  margin-bottom: 14px;
}
.gift-block__icon svg{
  width: 44px;
  height: 44px;
  stroke: #111827;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.gift-block__text{
  text-align:center;
  color: var(--muted);
  font-size: 16px;
  margin-bottom: 8px;
}
.gift-block__numbers{
  text-align:center;
  margin-bottom: 18px;
}
.gift-block__numbers .big{
  display:block;
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #0B0E14;
  margin-bottom: 6px;
}
.gift-block__numbers .small{
  display:block;
  font-size: 16px;
  color: #111827;
  font-weight: 700;
}
.gift-block__button{
  display:flex;
  justify-content:center;
}
.gift-cta{
  background: var(--accent);
  color: #0B0E14;
  border: none;
  padding: 14px 30px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 900;
  cursor: pointer;
  transition: background-color .15s ease, transform .15s ease;
  box-shadow: 0 10px 20px rgba(187,235,0,.16);
}
.gift-cta:hover{background: var(--accent-hover)}
.gift-cta:active{transform: translateY(1px)}

/* Footer */
.footer{
  background: var(--header);
  color: rgba(255,255,255,.7);
  padding: 18px 0;
  text-align:center;
  font-size: 13px;
}

/* Mobile */
@media (max-width: 520px){
  .header__auth .btn{padding: 10px 14px}
  .gift-block{padding: 22px 18px}
}