:root{
  --bg:#f6f7f9;
  --card:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --line:#e5e7eb;
  --accent:#16a34a; /* зелений акцент */
  --accent2:#111827;
  --radius:16px;
  --shadow:0 12px 30px rgba(17,24,39,.08);
}

*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}
.wrap{max-width:520px;margin:0 auto;padding:18px}
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;background:var(--card);border-bottom:1px solid var(--line)
}
.brand{font-weight:800;letter-spacing:.2px}
.badge{font-size:12px;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin-top:14px}
.h1{font-size:20px;font-weight:800;margin:0 0 6px}
.p{margin:0;color:var(--muted);line-height:1.35}
.steps{display:flex;gap:8px;margin:14px 0 0}
.step{flex:1;height:6px;border-radius:99px;background:#e9ecef}
.step.on{background:var(--accent)}
label{display:block;margin:12px 0 6px;font-size:13px;color:var(--muted)}
input{
  width:100%;padding:12px 12px;border-radius:12px;border:1px solid var(--line);
  background:#fff;font-size:16px;outline:none
}
input:focus{border-color:rgba(22,163,74,.5);box-shadow:0 0 0 4px rgba(22,163,74,.12)}
.btn{
  width:100%;padding:12px 14px;border:0;border-radius:12px;
  background:var(--accent);color:#fff;font-weight:800;font-size:16px;cursor:pointer
}
.btn.secondary{background:#111827}
.row{display:flex;gap:10px}
.row > *{flex:1}
.small{font-size:12px;color:var(--muted);line-height:1.35}
.err{background:#fff1f2;border:1px solid #fecdd3;color:#9f1239;padding:10px;border-radius:12px;margin-top:12px}
.ok{background:#ecfdf5;border:1px solid #bbf7d0;color:#065f46;padding:10px;border-radius:12px;margin-top:12px}
pre{white-space:pre-wrap;word-break:break-word;margin:10px 0 0}