:root {
  --bg: #0b0c10;
  --bg-alt: #13141c;
  --card-bg: #181a24;
  --border: #26293a;
  --text: #e8ecff;
  --muted: #a3a8c2;
  --accent: #f5c842;
  --accent-soft: rgba(245, 200, 66, 0.1);
  --link: #6fa8ff;
  --max-width: 900px;
  --radius: 10px;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.65);
}

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

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #171a27 0, #05060a 55%, #000000 100%);
  color: var(--text);
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */

.site-header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, #111320, #0b0c10);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 0 0.75rem;
}

.site-header h1 {
  margin: 0;
  font-size: 1.6rem;
  letter-spacing: 0.04em;
}

.site-header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Navigation */

.main-nav {
  margin-top: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.main-nav a {
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.85rem;
  color: var(--muted);
  background: transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.main-nav a:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--text);
}

/* Layout */

main.container {
  padding: 1.5rem 1rem 2.5rem;
}

/* Cards / Sections */

.card {
  background: linear-gradient(145deg, var(--card-bg), #11121b);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 1.4rem 1.3rem 1.3rem;
  margin-bottom: 1.4rem;
}

.card h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.3rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.card h3 {
  margin-top: 1.1rem;
  margin-bottom: 0.4rem;
  font-size: 1rem;
  color: var(--accent);
}

.card p {
  margin-top: 0.35rem;
  margin-bottom: 0.35rem;
  line-height: 1.5;
  color: var(--muted);
}

.card ul {
  margin: 0.1rem 0 0.6rem;
  padding-left: 1.2rem;
  color: var(--muted);
}

.card li {
  margin-bottom: 0.25rem;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  background: #05060a;
  padding: 0.8rem 0;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

/* Responsive tweaks */

@media (min-width: 700px) {
  .header-inner {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
  }
}