:root {
  --fg: #0e1a2b;
  --primary: #007aff;
  --accent-start: #00c2ff;
  --accent-end: #6b5bff;
  --bg-top: #f7fafd;
  --bg-bottom: #e3edf7;
  --box-bg: #ffffff;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Helvetica Neue, Arial, sans-serif;
  color: var(--fg);
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  padding: 24px;
}

.container {
  position: relative;
  background: var(--box-bg);
  text-align: center;
  padding: 56px 44px;
  border-radius: 22px;
  max-width: 460px;
  width: 100%;
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.05);
  animation: fadeIn 0.6s ease-out;
  overflow: hidden;
}

/* Thin cyan gradient bar across top */
.container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--accent-start), var(--accent-end));
  border-top-left-radius: 22px;
  border-top-right-radius: 22px;
}

.logo {
  width: 260px; /* slightly larger logo */
  height: auto;
  margin-bottom: 36px;
  display: inline-block;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.08));
}

h1 {
  font-size: clamp(21px, 2.8vw, 25px);
  font-weight: 700;
  color: #12294b;
  margin-bottom: 16px;
  line-height: 1.4;
}

.sub {
  font-size: 16px;
  color: #4a5b6a;
  line-height: 1.6;
  margin-bottom: 32px;
}

.cta {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 14px 32px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 17px;
  box-shadow: 0 6px 16px rgba(0, 122, 255, 0.25);
  transition: all 0.2s ease;
}

.cta:hover {
  background: #005fcb;
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(0, 122, 255, 0.35);
}

.footer {
  font-size: 13px;
  color: #768495;
  margin-top: 40px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}