:root {
  --orange: #ff5a00;
  --orange-dark: #d94b00;
  --ink: #111827;
  --muted: #667085;
  --line: #e5e7eb;
  --bg: #f4f6f8;
  --success: #15803d;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #f8fafc 0%, var(--bg) 100%);
  min-height: 100vh;
}
.page-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
}
.card {
  width: min(100%, 520px);
  background: white;
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, .10);
  padding: 28px;
}
.brand-row { display: flex; gap: 14px; align-items: center; margin-bottom: 20px; }
.brand-mark {
  width: 58px; height: 58px; border-radius: 14px;
  display: grid; place-items: center;
  background: var(--orange); color: white;
  font-weight: 900; font-size: 24px;
}
h1 { font-size: 24px; margin: 0; }
.subtitle { margin: 4px 0 0; color: var(--muted); }
.notice {
  border-left: 4px solid var(--orange);
  background: #fff7ed;
  padding: 12px 14px;
  border-radius: 10px;
  margin-bottom: 24px;
  color: #7c2d12;
}
.step { display: none; }
.step.active { display: block; }
h2 { margin: 0 0 14px; font-size: 20px; }
label { display: block; margin: 14px 0 6px; font-weight: 700; }
input {
  width: 100%; height: 46px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 0 13px;
  font-size: 16px;
  outline: none;
}
input:focus { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(255, 90, 0, .14); }
button {
  width: 100%; height: 46px;
  margin-top: 18px;
  border: 0; border-radius: 10px;
  background: var(--orange); color: white;
  font-weight: 800; font-size: 15px;
  cursor: pointer;
}
button:hover { background: var(--orange-dark); }
button.secondary { background: #eef2f7; color: #1f2937; margin-top: 10px; }
.hint { color: var(--muted); margin-top: -4px; }
.error { color: #b42318; min-height: 20px; margin: 10px 0 0; }
.success-panel { text-align: center; }
.success-icon {
  width: 68px; height: 68px; border-radius: 50%;
  margin: 4px auto 16px;
  display: grid; place-items: center;
  background: #dcfce7; color: var(--success);
  font-size: 34px; font-weight: 900;
}
.review-details { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 16px; }
.review-details summary { cursor: pointer; font-weight: 700; }
dl { display: grid; grid-template-columns: 120px 1fr; gap: 8px 12px; }
dt { color: var(--muted); }
dd { margin: 0; word-break: break-all; }
code { background: #f3f4f6; padding: 2px 6px; border-radius: 6px; }
@media (max-width: 560px) {
  .card { padding: 22px 18px; border-radius: 16px; }
  h1 { font-size: 21px; }
  dl { grid-template-columns: 1fr; }
}