* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: Inter, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #111827;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    linear-gradient(rgba(17, 24, 39, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 24, 39, 0.03) 1px, transparent 1px),
    #eef2f7;
  background-size: 28px 28px, 28px 28px, auto;
}

.container {
  width: 100%;
  max-width: 740px;
}

.card {
  position: relative;
  background: #ffffff;
  border: 1px solid #dbe2ea;
  border-radius: 16px;
  padding: 44px 34px;
  text-align: center;
  box-shadow: 0 20px 50px rgba(17, 24, 39, 0.08);
}

.card::before {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(90deg, rgba(0, 183, 239, 0.3), rgba(0, 183, 239, 0));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.label {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #00B7EF;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: #0f172a;
  word-break: break-word;
}

.subtitle {
  margin: 18px auto 0;
  max-width: 540px;
  font-size: 17px;
  line-height: 1.6;
  color: #4b5563;
}

.actions {
  margin-top: 30px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  min-width: 150px;
  padding: 13px 22px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn.primary {
  background: #00B7EF;
  border: 1px solid #00B7EF;
  color: #ffffff;
  box-shadow: 0 8px 18px rgba(0, 183, 239, 0.35);
}

.btn.primary:hover {
  box-shadow: 0 10px 22px rgba(0, 183, 239, 0.4);
}

.btn.secondary {
  background: #f8fafc;
  color: #1f2937;
  border: 1px solid #d2dbe5;
}

.btn.secondary:hover {
  border-color: #00B7EF;
}

.note {
  margin-top: 24px;
  font-size: 15px;
  color: #6b7280;
}

.note a {
  color: #00B7EF;
  text-decoration: none;
  font-weight: 600;
}

.note a:hover {
  text-decoration: underline;
}

@media (max-width: 560px) {
  .card {
    border-radius: 14px;
    padding: 34px 20px;
  }

  .subtitle {
    font-size: 16px;
  }

  .btn {
    width: 100%;
  }
}