:root{--bg: #0b1020;--panel: #121a31;--line: #22304f;--text: #e6edf7;--muted: #8b9bb8;--accent: #7dd3fc;--accent-2: #38bdf8;--good: #34d399;--bad: #f87171;--radius: 16px;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;background:radial-gradient(1200px 600px at 80% -10%,rgba(56,189,248,.16),transparent 60%),radial-gradient(900px 500px at -10% 110%,rgba(125,211,252,.08),transparent 60%),var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased;min-height:100%}.page{max-width:480px;margin:0 auto;padding:20px 16px 40px;min-height:100vh;display:flex;flex-direction:column;gap:18px}.top{display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:8px;font-weight:700;letter-spacing:.01em}.brand .arrow{color:var(--muted);font-weight:400}.pill{font-size:12px;padding:4px 10px;border-radius:999px;border:1px solid rgba(251,191,36,.4);color:#fbbf24;background:#fbbf2414}.card{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:24px 20px;box-shadow:0 20px 60px #00000059}h1{font-size:26px;line-height:1.2;margin:0 0 10px;letter-spacing:-.02em}.accent{color:var(--accent)}.muted{color:var(--muted);line-height:1.5;margin:0 0 18px}.small{font-size:13px}.mono{font-family:JetBrains Mono,ui-monospace,monospace;word-break:break-all}.center{text-align:center;margin:14px 0}.label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin:18px 0 8px;text-transform:uppercase;letter-spacing:.06em}.row{display:flex;gap:8px}.input{flex:1;min-width:0;background:#0d1428;border:1px solid var(--line);border-radius:12px;color:var(--text);padding:14px;font:15px JetBrains Mono,ui-monospace,monospace;outline:none}.input:focus{border-color:var(--accent-2)}.input.bad{border-color:var(--bad)}.hint{font-size:13px;color:var(--muted);margin:8px 0 0}.hint.bad,.error{color:var(--bad)}.error{margin:12px 0;font-size:14px}.amounts{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}button{font:inherit;cursor:pointer}.chip{padding:14px 0;border-radius:12px;border:1px solid var(--line);background:#0d1428;color:var(--text);font-weight:600;font-size:17px}.chip.on{border-color:var(--accent);background:#7dd3fc1f;color:var(--accent)}.ghost{border:1px solid var(--line);background:transparent;color:var(--text);border-radius:12px;padding:0 14px;white-space:nowrap}.ghost.wide{width:100%;padding:14px;margin-top:10px}.primary{display:block;text-align:center;text-decoration:none;background:var(--accent);color:#06101f;font-weight:700;border-radius:12px;padding:14px;margin-top:18px}.pay{margin-top:22px;min-height:60px}.hidden{position:absolute;visibility:hidden;height:0;overflow:hidden}.steps{list-style:none;padding:0;margin:20px 0 6px}.steps li{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);color:var(--muted)}.steps li:last-child{border-bottom:0}.steps li.done{color:var(--text)}.steps li.active{color:var(--accent)}.dot{width:12px;height:12px;flex:none;border-radius:50%;border:2px solid var(--line)}.done .dot{background:var(--good);border-color:var(--good)}.active .dot{border-color:var(--accent);animation:pulse 1.2s ease-in-out infinite}.step-label{flex:1}.steps a{color:var(--accent);text-decoration:none;font-size:13px}@keyframes pulse{50%{box-shadow:0 0 0 6px #7dd3fc26}}.foot{font-size:12px;color:var(--muted);line-height:1.5;text-align:center;padding:0 8px}.card-frame iframe{min-height:560px}