:root {
  --bg0:#0f1412; --bg1:#1a2420; --ink:#f3f0e8; --muted:#a8b0a8;
  --line:rgba(243,240,232,.12); --accent:#c8f560; --card:rgba(15,20,18,.78);
}
*{box-sizing:border-box} html,body{margin:0;min-height:100%}
body{
  font-family:"DM Sans",system-ui,sans-serif;color:var(--ink);
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(200,245,96,.14), transparent 55%),
    radial-gradient(700px 420px at 100% 0%, rgba(120,180,160,.12), transparent 50%),
    linear-gradient(165deg,var(--bg0),var(--bg1));
  line-height:1.55;
}
a{color:var(--accent);text-decoration:none} a:hover{text-decoration:underline}
.wrap{max-width:760px;margin:0 auto;padding:36px 20px 72px}
nav{display:flex;flex-wrap:wrap;gap:10px 16px;margin:0 0 28px;font-size:13px;color:var(--muted)}
nav a{color:var(--muted)} nav a:hover{color:var(--ink)}
.brand{font-family:"Instrument Serif",Georgia,serif;font-size:40px;margin:0 0 8px;letter-spacing:.02em}
.brand span{color:var(--accent)}
.lead{color:var(--muted);margin:0 0 24px;font-size:16px}
h1{font-size:2rem;margin:0 0 10px}
h2{font-size:1.15rem;margin:26px 0 8px}
p,li{color:var(--muted)} ul{padding-left:1.2rem}
.card{
  border:1px solid var(--line);border-radius:16px;background:var(--card);
  padding:18px 20px;margin:0 0 14px;
}
.card h2{margin:0 0 8px}
.price{font-size:1.5rem;font-weight:700;color:var(--ink)}
.price span{font-size:.95rem;font-weight:500;color:var(--muted)}
.grid{display:grid;gap:12px}
@media(min-width:640px){.grid{grid-template-columns:1fr 1fr}}
.badge{
  display:inline-block;margin-bottom:14px;padding:4px 10px;border-radius:999px;
  border:1px solid var(--line);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)
}
.badge.sandbox{color:var(--accent);border-color:rgba(200,245,96,.35)}
.status{
  margin-top:18px;padding:12px 14px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);font-size:14px;color:var(--ink);text-align:center
}
.status.error{border-color:rgba(255,120,100,.45);color:#ffc4ba}
.checkout-shell{
  min-height:100vh;display:grid;place-items:center;padding:24px
}
.checkout-card{
  width:min(420px,100%);border:1px solid var(--line);border-radius:20px;
  padding:28px 24px;background:var(--card);backdrop-filter:blur(10px);text-align:center
}
.hint{margin-top:14px;font-size:12px;color:var(--muted)}
footer{margin-top:36px;font-size:.9rem;color:var(--muted);border-top:1px solid var(--line);padding-top:18px}