:root {
  --bg: #0b0c10;
  --bg-alt: #11131a;
  --bg-soft: #181b24;
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --accent: #fbbf24;
  --accent-soft: rgba(251, 191, 36, 0.12);
  --border-soft: #1f2933;
  --max-width: 960px;
  --radius: 6px;
  --shadow-soft: 0 14px 35px rgba(0, 0, 0, 0.45);
}

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

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(circle at top, #111827 0, #020617 55%, #000 100%);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(3, 7, 18, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.site-title a {
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.95rem;
  color: var(--text);
}

.site-nav a {
  margin-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.site-nav a.active {
  color: var(--accent);
}

.site-nav a:hover {
  color: var(--accent);
}

/* Hero */

.hero {
  padding: 4.5rem 0 3rem;
  text-align: left;
}

.hero-small {
  padding: 3.5rem 0 2.5rem;
}

.hero h1 {
  font-size: 2.4rem;
  margin: 0 0 0.5rem;
}

.hero-subtitle {
  margin: 0;
  max-width: 32rem;
  color: var(--text-muted);
}

/* Sections */

.site-main {
  padding-bottom: 3rem;
}

.content-section {
  padding: 2.5rem 0;
}

.content-section h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.4rem;
}

.content-section p {
  margin-top: 0.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-muted);
}

.content-section ul {
  margin: 0.5rem 0 0.75rem 1.25rem;
  padding: 0;
  color: var(--text-muted);
}

/* Grid & Cards */

.content-grid .grid,
.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

@media (min-width: 720px) {
  .content-grid .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid.three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.card {
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

/* Highlight & Callout */

.highlight {
  background: radial-gradient(circle at top left, var(--accent-soft), transparent 55%);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}

.callout {
  text-align: center;
}

.callout p {
  max-width: 40rem;
  margin-left: auto;
  margin-right: auto;
}

/* Button */

.button {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  background: var(--accent);
  color: #111827;
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.45);
}

.button:hover {
  text-decoration: none;
  background: #facc15;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 1.25rem 0 1.75rem;
  background: rgba(3, 7, 18, 0.96);
}

.site-footer p {
  margin: 0;
  text-align: center;
  color: var(--text-muted);
}