:root {
  --bg-start: #f6f8fb;
  --bg-end: #eef2f7;
  --text: #172033;
  --muted: #5f6b7a;
  --card: #ffffff;
  --border: rgba(23, 32, 51, 0.08);
  --shadow: 0 24px 80px rgba(23, 32, 51, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(23, 32, 51, 0.08), transparent 32rem),
    linear-gradient(135deg, var(--bg-start), var(--bg-end));
}

.page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: min(100%, 560px);
  padding: 48px 36px;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  text-decoration: none;
}

.brand-logo {
  display: block;
  max-width: 220px;
  max-height: 92px;
  object-fit: contain;
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.subtitle {
  max-width: 440px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.footer {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}

.footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 520px) {
  .card {
    padding: 38px 24px;
    border-radius: 22px;
  }

  .brand-logo {
    max-width: 190px;
  }
}