*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0a0a0a;
  --bg-alt: #111111;
  --surface: #1a1a1a;
  --text: #e8e8e8;
  --text-muted: #888888;
  --accent: #c8ff00;
  --border: #222222;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-heading: 'Space Grotesk', -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Hero */
.hero {
  padding: 180px 0 120px;
  border-bottom: 1px solid var(--border);
}

.hero-tag {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 24px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--bg);
  background: var(--accent);
  padding: 14px 32px;
  border-radius: 6px;
  text-decoration: none;
  transition: opacity 0.2s;
}

.btn:hover {
  opacity: 0.85;
}

/* Sections */
.section {
  padding: 100px 0;
  border-bottom: 1px solid var(--border);
}

.section-alt {
  background: var(--bg-alt);
}

.section h2 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 48px;
  letter-spacing: -0.01em;
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px;
}

.card-num {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}

.card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Contact */
.contact-container {
  text-align: center;
  max-width: 600px;
}

.contact-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

/* Footer */
.footer {
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 140px 0 80px;
  }

  .section {
    padding: 72px 0;
  }

  .nav-links {
    gap: 20px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 4px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .nav-links {
    display: none;
  }
}