:root {
  --navy: #0b1f3a;
  --navy-deep: #071526;
  --slate: #334155;
  --slate-soft: #64748b;
  --mist: #e8eef6;
  --paper: #f7f9fc;
  --accent: #2a5a9e;
  --accent-soft: rgba(42, 90, 158, 0.12);
  --line: rgba(15, 40, 70, 0.1);
  --shadow: 0 24px 60px rgba(7, 21, 38, 0.18);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--navy);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(42, 90, 158, 0.18), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(100, 116, 139, 0.16), transparent 50%),
    linear-gradient(180deg, var(--paper) 0%, #eef2f7 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
  pointer-events: none;
  opacity: 0.55;
}

.shell {
  position: relative;
  width: min(640px, 100%);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 2.25rem 2rem 1.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 2.5rem;
}

.mark {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--navy), var(--accent));
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.brand-text {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate);
}

.eyebrow {
  display: inline-block;
  margin: 0 0 0.85rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: "Source Serif 4", Georgia, "Times New Roman", serif;
  font-size: clamp(1.85rem, 5vw, 2.55rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--navy-deep);
}

.tagline {
  margin: 0.65rem 0 0;
  font-size: clamp(1.15rem, 3vw, 1.4rem);
  font-weight: 600;
  color: var(--accent);
}

.lede {
  margin: 1.1rem 0 1.75rem;
  max-width: 34ch;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--slate-soft);
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.75rem 1.15rem;
  border-radius: 999px;
  background: var(--navy);
  color: #fff;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 10px 24px rgba(11, 31, 58, 0.25);
}

.cta:hover,
.cta:focus-visible {
  background: #123056;
  transform: translateY(-1px);
  outline: none;
}

.foot {
  margin-top: 2.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.foot p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--slate-soft);
}

@media (max-width: 480px) {
  .shell {
    padding: 1.75rem 1.25rem 1.35rem;
    border-radius: 18px;
  }

  .brand {
    margin-bottom: 1.75rem;
  }
}