:root {
  --bg: #0f0f12;
  --bg-alt: #18181f;
  --text: #e8e8ed;
  --text-muted: #9898a8;
  --accent: #6c8cff;
  --accent-hover: #8aa4ff;
  --border: #2a2a35;
  --radius: 12px;
  --font: "DM Sans", system-ui, sans-serif;
  --max-width: 720px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

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

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

code {
  font-size: 0.9em;
  padding: 0.15em 0.45em;
  border-radius: 6px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
}

/* Header */

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
}

.logo {
  font-weight: 700;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--text);
}

/* Hero */

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 6rem 1.5rem 4rem;
}

.hero-label {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-text {
  margin: 0 0 2rem;
  color: var(--text-muted);
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

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

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

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

/* Sections */

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
}

.section-alt {
  max-width: none;
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}

.section-alt h2,
.section-alt .cards {
  max-width: 960px;
  margin-inline: auto;
}

.section h2 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
}

.section > p {
  margin: 0;
  color: var(--text-muted);
}

/* Cards */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.card {
  padding: 1.5rem;
  border-radius: var(--radius);
  background: var(--bg);
  border: 1px solid var(--border);
}

.card-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 0.75rem;
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Footer */

.footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
}

.footer p {
  margin: 0;
}

/* Mobile nav */

@media (max-width: 540px) {
  .nav-links {
    gap: 1rem;
  }

  .hero {
    padding-top: 4rem;
  }
}