:root {
  --bg: #10151c;
  --ink: #e7eef7;
  --muted: #93a0b4;
  --line: #2a3545;
  --panel: #161d27;
  --accent: #3ddcb5;
  --accent-ink: #06241c;
  --warn: #e0a106;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  font-family: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% -10%, rgba(61, 220, 181, 0.16), transparent 34%),
    radial-gradient(circle at 88% 0%, rgba(120, 150, 190, 0.14), transparent 28%),
    linear-gradient(180deg, #151c26 0%, var(--bg) 42%, #0c1117 100%);
}
a { color: inherit; text-decoration: none; }
code, pre { font-family: "IBM Plex Mono", ui-monospace, monospace; }

.atmosphere {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 20%, black, transparent 72%);
  opacity: 0.55;
}

.top, main, footer {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.top {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.04em;
}
.brand span, .eyebrow, .nav-cta, .button, .phase-meta strong { color: var(--accent); }

nav { display: flex; gap: 1.25rem; align-items: center; color: var(--muted); }
.nav-cta {
  border: 1px solid rgba(61, 220, 181, 0.35);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
}

.hero {
  padding: 4.5rem 0 2.5rem;
  animation: rise 0.7s ease both;
}
.eyebrow {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}
.hero h1 {
  font-size: clamp(3.4rem, 10vw, 6.8rem);
  line-height: 0.92;
  letter-spacing: -0.07em;
  margin: 0 0 1.2rem;
  max-width: 11ch;
}
.hero h1 span { color: var(--accent); }
.lede {
  max-width: 34rem;
  color: var(--muted);
  font-size: 1.25rem;
  line-height: 1.55;
  margin: 0 0 1.6rem;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.2rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.2rem;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.button:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.button.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.note { color: var(--muted); max-width: 40rem; line-height: 1.5; }
.note a { color: var(--accent); text-decoration: underline; text-underline-offset: 0.15em; }

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1rem 0 3rem;
  animation: rise 0.8s ease 0.08s both;
}
.stat, .panel, .phase, .module {
  background: rgba(22, 29, 39, 0.88);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.stat { padding: 1.4rem 1.5rem; }
.stat strong {
  display: block;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.05em;
  color: var(--accent);
}
.stat span { color: var(--muted); }

.panel {
  padding: 1.6rem;
  margin-bottom: 3rem;
  animation: rise 0.85s ease 0.12s both;
}
.panel h2, .curriculum h2 {
  margin: 0.2rem 0 0.8rem;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.05em;
}
.support { color: var(--muted); line-height: 1.55; }
pre {
  overflow: auto;
  background: #0b1017;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  color: #d7e4f5;
  line-height: 1.55;
}

.curriculum { padding-bottom: 4rem; animation: rise 0.9s ease 0.16s both; }
.phase { padding: 1.4rem; margin: 1rem 0 1.5rem; }
.phase-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}
.phase h3 {
  margin: 0;
  font-size: 1.55rem;
  letter-spacing: -0.03em;
}
.phase-meta { color: var(--muted); font-size: 0.92rem; }
.module {
  padding: 1rem 1.1rem;
  margin: 0.9rem 0;
  background: #121821;
}
.module h4 { margin: 0 0 0.35rem; font-size: 1.1rem; }
.module p { margin: 0 0 0.8rem; color: var(--muted); }
.lab-list { list-style: none; padding: 0; margin: 0; }
.lab-list li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  padding: 0.7rem 0;
  border-top: 1px solid #243041;
}
.lab-list strong { display: block; }
.lab-list span, .lab-list em { color: var(--muted); font-style: normal; font-size: 0.92rem; }
.badge {
  display: inline-block;
  margin-top: 0.25rem;
  border: 1px solid #334155;
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--warn);
}

footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}
footer a { color: var(--accent); }

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 800px) {
  .stats { grid-template-columns: 1fr; }
  .hero { padding-top: 3rem; }
  nav a:not(.nav-cta) { display: none; }
}