:root{--bg:#0b0f14;--card:#131a22;--border:#22303c;--text:#e6edf3;--muted:#8b9aad;--accent:#10b981;--err:#ef4444;--warn:#f59e0b;}
*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
header{border-bottom:1px solid var(--border);background:#0d141c}
nav{max-width:900px;margin:0 auto;padding:14px 16px;display:flex;gap:18px;align-items:center}
.logo{font-weight:700;color:var(--text);font-size:1.15rem;margin-right:auto}
main{max-width:900px;margin:24px auto;padding:0 16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:22px}
.card h1{margin:0 0 4px}.sub{color:var(--muted);margin:0 0 18px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:600px){.grid{grid-template-columns:1fr}}
.panel{background:#0f1620;border:1px solid var(--border);border-radius:10px;padding:12px}
.panel label{display:block;color:var(--muted);font-size:.85rem;margin-bottom:6px}
.row{display:flex;gap:8px}
input,select{background:#0b1119;color:var(--text);border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-size:1rem;width:100%}
input:disabled{color:var(--muted)}select{max-width:200px}
.ig{margin-top:14px}.ig label{display:block;color:var(--muted);font-size:.85rem;margin-bottom:6px}
details{margin-top:10px;color:var(--muted)}details summary{cursor:pointer;padding:8px 0}
.submit{margin-top:18px;width:100%;background:var(--accent);color:#052018;border:none;padding:14px;border-radius:8px;font-weight:700;font-size:1rem;cursor:pointer}
.err{background:rgba(239,68,68,.12);border:1px solid var(--err);color:#fecaca;padding:10px 12px;border-radius:8px;margin-bottom:12px}
.info{margin-top:16px;color:var(--muted);font-size:.9rem}
.rates{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px;color:var(--muted);font-size:.85rem}
.summary{background:#0f1620;border:1px solid var(--border);border-radius:10px;padding:12px 16px;margin:14px 0}
.qr{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px dashed var(--border)}
.qr:last-child{border-bottom:none}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-all}
.deposit{text-align:center;padding:18px;background:#0f1620;border:1px dashed var(--accent);border-radius:10px;margin:16px 0}
.deposit h2{margin:0 0 10px;font-size:1rem}.mono.big{background:#050a10;padding:10px 14px;border-radius:6px;display:inline-block}
.instr p{line-height:1.55}.muted{color:var(--muted);font-size:.9rem}
.warn{background:rgba(245,158,11,.1);border:1px solid var(--warn);color:#fde68a;padding:10px 12px;border-radius:8px;margin-top:14px}
.actions{display:flex;gap:10px;margin-top:16px}
.btn{background:var(--accent);color:#052018;padding:10px 16px;border-radius:8px;font-weight:700}
.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}
footer{max-width:900px;margin:20px auto;padding:12px 16px;color:var(--muted);font-size:.85rem;border-top:1px solid var(--border)}