:root{
  --bg: #ffffff;
  --card-w: 420px;
  --text: #0b0b0b;
  --muted: #444;
  --accent: #111;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:var(--bg);font-family:Inter,Segoe UI,system-ui,Arial;color:var(--text);-webkit-font-smoothing:antialiased}
body{display:flex;justify-content:center;align-items:flex-start;padding-top:48px;padding-left:12px;padding-right:12px}
.card{width:100%;max-width:var(--card-w);background:rgba(255,255,255,0.98);border-radius:12px;padding:22px;box-shadow:0 6px 30px rgba(12,12,12,0.08);border:1px solid rgba(0,0,0,0.04)}
.title{font-weight:700;font-size:18px;margin-bottom:6px}
.lead{margin:0 0 14px 0;color:var(--muted);font-size:13px}
.row{display:flex;gap:8px;align-items:center}
input[type="email"]{flex:1;padding:10px;border-radius:8px;border:1px solid #cfcfcf;font-size:14px;color:var(--text);background:#fff}
input::placeholder{color:#777;opacity:1}
button{padding:10px 12px;border-radius:8px;border:none;background:var(--accent);color:#fff;font-weight:600;cursor:pointer}
button[disabled]{opacity:0.55;cursor:not-allowed}
.error{color:#b00020;font-size:13px;margin-top:10px;display:none}
.captcha{margin-top:14px}
.note{font-size:13px;color:var(--muted);margin-bottom:8px}
.preview{display:none;margin-top:16px;align-items:center;gap:12px}
.preview img{height:64px;width:64px;object-fit:contain;border-radius:8px;border:1px solid #eee;background:#fff;padding:8px}
.previewName{font-weight:600;color:var(--text);font-size:14px}
.foot{margin-top:16px;color:var(--muted);font-size:12px;text-align:center}
.sr{position:absolute;left:-10000px;top:auto;width:1px;height:1px;overflow:hidden}
@media (max-width:480px){:root{--card-w:92vw}.preview img{height:56px;width:56px}}