:root {
  color-scheme: dark;
  --bg: #070b14;
  --bg-elev: #0b1220;
  --bg-soft: #0e1a2c;
  --border: #14233a;
  --border-strong: #1e3352;
  --text: #e6eef9;
  --muted: #9fb2cc;
  --primary: #0f3b78;
  --accent: #1f5aa6;
  --highlight: #6ea2ff;
  --shadow: 0 18px 50px rgba(5, 11, 24, 0.55);
  --radius: 16px;
  --max-width: 1100px;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
}

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

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--text);
  letter-spacing: 0.2px;
  background-image:
    linear-gradient(90deg, rgba(20, 35, 58, 0.3) 1px, transparent 1px),
    linear-gradient(180deg, rgba(20, 35, 58, 0.3) 1px, transparent 1px);
  background-size: 84px 84px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus-visible {
  color: var(--highlight);
}

img {
  max-width: 100%;
  display: block;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(7, 11, 20, 0.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.8px;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s ease;
}

.brand:hover,
.brand:focus-visible {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: rgba(7, 11, 20, 0.7);
  color: var(--text);
  font: inherit;
  letter-spacing: 0.6px;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 999px;
  box-shadow: 0 6px 0 var(--text), 0 -6px 0 var(--text);
}

.nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
  font-size: 0.95rem;
}

.nav-links a {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  color: var(--muted);
}

.nav-links a[aria-current="page"] {
  color: var(--text);
  border-color: var(--accent);
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px 24px 80px;
}

.hero {
  display: grid;
  gap: 20px;
  padding: 40px;
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(15, 59, 120, 0.2), rgba(7, 11, 20, 0.9));
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow);
}

.hero h1 {
  font-size: clamp(2.2rem, 3vw, 3.1rem);
  margin: 0;
}

.hero p {
  margin: 0;
  color: var(--muted);
  max-width: 620px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  color: var(--text);
  font-weight: 500;
}

.button.secondary {
  border-color: var(--border-strong);
  color: var(--muted);
}

.section-title {
  margin: 46px 0 20px;
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  display: grid;
  gap: 12px;
  min-height: 180px;
}

.card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.page-footer {
  margin-top: 48px;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.panel {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  line-height: 1.6;
  color: var(--muted);
}

.panel strong {
  color: var(--text);
}

@media (max-width: 720px) {
  body {
    background-size: 64px 64px;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 16px 20px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
  }

  .js .nav-links {
    display: flex;
    flex-direction: column;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translateY(-6px);
    transition: height 0.35s ease, opacity 0.3s ease, transform 0.3s ease;
  }

  .js .nav-links.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .page {
    padding: 40px 20px 64px;
  }

  .hero {
    padding: 28px;
    border-radius: 14px;
  }

  .hero h1 {
    font-size: clamp(2rem, 7vw, 2.6rem);
  }

  .card {
    min-height: auto;
  }

  .panel {
    padding: 22px;
  }
}

@media (max-width: 520px) {
  .nav {
    align-items: stretch;
  }

  .brand {
    font-size: 1rem;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    padding-top: 4px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .button {
    justify-content: center;
    width: 100%;
  }

  .page {
    padding: 32px 16px 56px;
  }

  .section-title {
    margin-top: 36px;
    letter-spacing: 1.4px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 20px;
  }

  .page-footer {
    font-size: 0.85rem;
  }
}