*{box-sizing:border-box}
body{margin:0;min-height:100vh;font-family:Arial,Helvetica,sans-serif;background:#0b1220;color:#fff}
.page{width:100%;max-width:1180px;margin:0 auto;padding:70px 24px 35px}
.logo{text-align:center;color:#ff7a00;font-size:42px;font-weight:900;letter-spacing:1px}
.subtitle{text-align:center;color:#b7c4d8;font-size:18px;margin:20px 0 36px}
.card{background:#111827;border:1px solid #26364f;border-radius:22px;padding:28px;box-shadow:0 20px 60px rgba(0,0,0,.28)}
.main-card{max-width:850px;margin:0 auto}
h1,h2,h3{margin-top:0}
h1{font-size:36px;line-height:1.2}
p{color:#b7c4d8;font-size:18px;line-height:1.45}
label{display:block;margin:18px 0 8px;font-size:18px;font-weight:700}
input{width:100%;padding:16px 18px;border:0;border-radius:12px;background:#e8eefb;color:#111;font-size:17px}
.btn,button{width:100%;display:block;text-align:center;margin-top:22px;padding:17px;border:0;border-radius:12px;background:linear-gradient(90deg,#ff7a00,#ff3300);color:#fff;font-weight:800;font-size:17px;text-decoration:none;cursor:pointer}
.btn.secondary{background:#1f2937;border:1px solid #374151}
.grid{max-width:850px;margin:22px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid .card{padding:18px}
.grid h3{font-size:18px}
.grid p{font-size:16px;margin-bottom:0}
.footer{text-align:center;color:#7b8798;margin-top:28px}
.amount{font-size:38px;font-weight:900;color:#fff;margin:15px 0 8px}
.success{color:#22c55e}
.danger{color:#ef4444}
.info{background:#0b1220;border:1px solid #26364f;padding:18px;border-radius:14px;margin:18px 0}
pre{white-space:pre-wrap;background:#020617;padding:15px;border-radius:12px;overflow:auto}
.loading{text-align:center;max-width:600px;margin:130px auto}
.spinner{width:54px;height:54px;border-radius:50%;border:6px solid #26364f;border-top-color:#ff7a00;margin:0 auto 20px;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:760px){.page{padding-top:35px}.grid{grid-template-columns:1fr}h1{font-size:30px}.logo{font-size:34px}}