:root {
  --bg-1: #0a2239;
  --bg-2: #1d3557;
  --bg-3: #274c77;
  --text: #f1faee;
  --accent: #a8dadc;
  --footer: #8aa9c2;
  --panel: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.12);
  --shadow: rgba(0, 0, 0, 0.25);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, var(--bg-1), var(--bg-2), var(--bg-3));
  overflow-x: hidden;
}

.page-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.hero-card {
  width: min(100%, 760px);
  min-height: min(720px, calc(100vh - 2rem));
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3rem 2rem;
  box-shadow: 0 20px 50px var(--shadow);
  backdrop-filter: blur(6px);
  text-align: center;
}

.hero-content {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.logo {
  display: block;
  width: 180px;
  max-width: 100%;
  height: auto;
  margin: 0 auto 1.25rem;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero-message {
  margin: 0;
  max-width: 34ch;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.7;
  color: var(--accent);
  white-space: pre-line;
}

footer {
  margin-top: 2rem;
  font-size: 0.95rem;
  color: var(--footer);
}

/* Mobile */
@media (max-width: 640px) {
  .page-shell {
    padding: 0;
  }

  .hero-card {
    width: 100%;
    min-height: 100vh;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    backdrop-filter: none;
    background: transparent;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  .hero-content {
    flex: 1 1 auto;
    justify-content: center;
    align-items: center;
    text-align: center;
  }

  .logo {
    width: 100px;
    margin-bottom: 0.75rem;
  }

  h1 {
    margin-bottom: 0.5rem;
    font-size: 2rem;
    line-height: 1.1;
  }

  .hero-message {
    max-width: 90%;
    font-size: 1rem;
    line-height: 1.4;
  }

  footer {
    margin-top: 1rem;
    font-size: 0.85rem;
  }
}