:root {
  --bg: #07111a;
  --bg-soft: #102436;
  --ink: #f2f0e6;
  --ink-soft: #b9c7d2;
  --accent: #ff7a59;
  --accent-2: #6ad7b9;
  --panel: rgba(8, 24, 38, 0.72);
  --stroke: rgba(242, 240, 230, 0.14);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 20%, rgba(106, 215, 185, 0.17), transparent 35%),
    radial-gradient(circle at 85% 5%, rgba(255, 122, 89, 0.2), transparent 30%),
    linear-gradient(145deg, var(--bg) 10%, var(--bg-soft) 90%);
  min-height: 100vh;
  line-height: 1.6;
}

.grain {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.09) 0.5px, transparent 0.5px);
  background-size: 4px 4px;
  opacity: 0.18;
  pointer-events: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 9;
  backdrop-filter: blur(8px);
  background: rgba(7, 17, 26, 0.68);
  border-bottom: 1px solid var(--stroke);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem clamp(1rem, 4vw, 4rem);
}

.brand {
  font-family: "Fraunces", serif;
  font-size: clamp(1.2rem, 2.4vw, 1.8rem);
  color: var(--ink);
  text-decoration: none;
}

.brand span {
  color: var(--accent-2);
}

nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
}

nav a:hover {
  color: var(--ink);
}

main,
.site-footer {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.hero {
  padding: clamp(4rem, 9vw, 7rem) 0 3rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--accent-2);
  margin-bottom: 0.8rem;
}

h1,
h2,
h3 {
  font-family: "Fraunces", serif;
  line-height: 1.15;
}

h1 {
  font-size: clamp(2rem, 5vw, 4.2rem);
  margin: 0;
  max-width: 14ch;
}

.hero p {
  color: var(--ink-soft);
  max-width: 62ch;
}

.hero-actions {
  margin-top: 1.6rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #111;
}

.btn-ghost {
  border: 1px solid var(--stroke);
  color: var(--ink);
}

.panel {
  margin-top: 2rem;
  background: var(--panel);
  border: 1px solid var(--stroke);
  border-radius: 20px;
  padding: clamp(1.2rem, 3vw, 2rem);
}

.panel-alt {
  background: linear-gradient(160deg, rgba(106, 215, 185, 0.12), rgba(8, 24, 38, 0.78));
}

.section-head h2 {
  margin: 0.3rem 0 0;
}

.cards {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
}

.card {
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 1rem;
  background: rgba(7, 17, 26, 0.45);
}

.card p,
.section-copy,
.learning-list {
  color: var(--ink-soft);
}

.tag {
  display: inline-block;
  margin-top: 0.6rem;
  color: var(--accent-2);
  font-size: 0.85rem;
}

.learning-list {
  padding-left: 1.1rem;
}

.timeline {
  margin-top: 1rem;
  display: grid;
  gap: 0.8rem;
}

.timeline > div {
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--accent);
  background: rgba(7, 17, 26, 0.45);
  border-radius: 8px;
}

.site-footer {
  padding: 3rem 0;
  text-align: center;
}

.site-footer a {
  color: var(--accent-2);
  font-weight: 700;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
  }

  nav {
    gap: 0.7rem;
  }
}