:root{--text:#f7f8ff;--muted:rgba(238,242,255,.64);--line:rgba(255,255,255,.12);--panel:rgba(14,18,30,.68);--accent:#9f67ff;--accent2:#38bdf8}
*{box-sizing:border-box}html,body{min-height:100%}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:#050608;display:grid;place-items:center;padding:24px;overflow-x:hidden}
.bg{position:fixed;inset:-20%;z-index:-2;background:linear-gradient(120deg,#091529,#32104e,#0d4966,#123a32);background-size:240% 240%;filter:blur(48px) saturate(1.25);animation:flow 24s ease-in-out infinite}@keyframes flow{0%,100%{background-position:0 50%}50%{background-position:100% 50%}}
.shell{width:min(760px,100%);display:grid;gap:14px}.card{background:var(--panel);border:1px solid var(--line);border-radius:24px;box-shadow:0 24px 70px rgba(0,0,0,.46),inset 0 1px rgba(255,255,255,.07);backdrop-filter:blur(18px);padding:22px}
.top{display:flex;align-items:center;gap:14px;margin-top:16px}.mark{width:52px;height:52px;border-radius:17px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 12px 32px rgba(124,58,237,.32);font-size:24px}.top h1{margin:0;font-size:24px}.top p{margin:5px 0 0;color:var(--muted);line-height:1.5;font-size:13px}
.badge{display:none;margin-left:auto;padding:7px 10px;border-radius:999px;border:1px solid rgba(251,191,36,.3);background:rgba(251,191,36,.1);color:#f9dda0;font-size:11px;font-weight:800}.badge.show{display:inline-flex}
.amounts{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:20px}.amount{border:1px solid var(--line);background:rgba(255,255,255,.055);color:var(--text);border-radius:14px;padding:12px 8px;font:inherit;font-weight:800;cursor:pointer;transition:.16s ease}.amount:hover,.amount.active{transform:translateY(-1px);border-color:rgba(159,103,255,.55);background:rgba(159,103,255,.16)}
.field{display:grid;gap:7px;margin-top:14px}.field label{font-size:12px;font-weight:800}.input-wrap{display:flex;align-items:center;border:1px solid var(--line);background:rgba(0,0,0,.2);border-radius:15px;padding:0 14px}.input-wrap input{width:100%;border:0;outline:0;background:transparent;color:var(--text);font:inherit;font-size:17px;padding:13px 0}.input-wrap span{color:var(--muted);font-weight:800}.hint{font-size:11px;color:var(--muted);line-height:1.45}
.pay{width:100%;margin-top:16px;border:0;border-radius:16px;padding:14px 18px;background:linear-gradient(120deg,#8b5cf6,#0ea5e9);color:white;font:inherit;font-weight:900;cursor:pointer;box-shadow:0 14px 34px rgba(59,130,246,.24);transition:.16s ease}.pay:hover{transform:translateY(-1px);filter:brightness(1.06)}.pay:disabled{opacity:.55;cursor:not-allowed;transform:none}
.status{display:none;margin-top:12px;padding:11px 12px;border-radius:14px;font-size:12px;line-height:1.45}.status.show{display:block}.status.error{border:1px solid rgba(248,113,113,.3);background:rgba(248,113,113,.1);color:#fecaca}.status.info{border:1px solid rgba(125,211,252,.28);background:rgba(125,211,252,.08);color:#d5f4ff}
.links{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.links a{padding:12px;border-radius:15px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);text-decoration:none;font-size:12px;font-weight:800;text-align:center}.links a:hover{background:rgba(255,255,255,.08)}.legal{color:var(--muted);font-size:11px;line-height:1.55;text-align:center}.back{color:#d8ccff;text-decoration:none;font-size:12px;font-weight:800}
@media(max-width:640px){body{padding:14px}.card{padding:17px;border-radius:20px}.top{align-items:flex-start}.badge{position:absolute;right:28px}.amounts{grid-template-columns:repeat(2,1fr)}.links{grid-template-columns:1fr}.top h1{font-size:21px}}