:root {
  --bg1: #f4f7fb;
  --bg2: #d7e7ff;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: #06c755;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  min-height: 100vh;
  background: radial-gradient(circle at 20% 20%, var(--bg2), var(--bg1));
}
.wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}
.card {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
}
h1 { margin: 0 0 8px; font-size: 30px; }
p { margin: 0 0 14px; color: var(--muted); }
.btn {
  width: 100%;
  border: 0;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 16px;
  cursor: pointer;
  margin-top: 10px;
}
.primary { background: var(--line); color: #fff; font-weight: 700; }
.ghost { background: #e2e8f0; color: #0f172a; }
.hint { margin-top: 14px; font-size: 12px; }
.status { margin-top: 10px; font-size: 13px; color: #b91c1c; min-height: 18px; }