:root {
  --bg: #000000;
  --card: #0f0f10;
  --text: #f2f4ff;
  --muted: #b8bfd9;
  --accent: #6f7cff;
  --accent-2: #59e3ca;
  --border: #23252b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Segoe UI, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.container {
  width: min(920px, 92vw);
  margin: 0 auto;
}

.center {
  text-align: center;
}

.site-header {
  padding: 1rem 0 0.5rem;
}

.site-header.compact {
  padding-top: 0.8rem;
}

.brand-logo {
  display: block;
  width: min(420px, 84vw);
  margin: 0 auto 0.6rem;
}

.brand-logo.small {
  width: min(300px, 72vw);
}

h1 {
  margin: 0.2rem 0 0.45rem;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.15;
}

h2 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

p,
li {
  font-size: 0.95rem;
}

.subtitle {
  color: var(--muted);
  max-width: 46rem;
  margin: 0 auto;
}

.nav-links {
  margin-top: 0.5rem;
  display: flex;
  justify-content: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}

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

.nav-links a {
  background: linear-gradient(120deg, var(--accent), #95a0ff);
  color: #080b1d;
  padding: 0.5rem 0.8rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.9rem;
}

.home-main {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.card,
.paper-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  margin: 0.45rem 0;
}

ul {
  padding-left: 1.1rem;
  margin: 0.3rem 0 0;
}

.site-footer {
  padding: 0.7rem 0 1.1rem;
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

@media (max-width: 820px) {
  .home-main {
    grid-template-columns: 1fr;
  }

  .brand-logo {
    width: min(360px, 86vw);
  }
}

@media (max-height: 900px) {
  .site-header {
    padding-top: 0.6rem;
  }

  .brand-logo {
    width: min(330px, 76vw);
    margin-bottom: 0.45rem;
  }

  .card,
  .paper-card {
    padding: 0.8rem 0.9rem;
  }
}