:root {
  --bg: #0b0d12;
  --bg-alt: #12151c;
  --text: #f2f3f5;
  --text-muted: #a6acb9;
  --accent: #6ee7c8;
  --accent-dim: #2f7a68;
  --border: #232733;
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3 {
  line-height: 1.2;
  margin: 0 0 0.5em;
}

p {
  margin: 0 0 1em;
  color: var(--text-muted);
}

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

.wrap-narrow {
  max-width: 720px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 13, 18, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

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

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

.nav-cta {
  color: var(--bg) !important;
  background: var(--accent);
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
}

.nav-cta:hover {
  color: var(--bg) !important;
  opacity: 0.9;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  display: block;
}

/* Hero */

.hero {
  padding: 120px 0 96px;
  text-align: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.hero-sub {
  max-width: 620px;
  margin: 24px auto 40px;
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.btn:hover {
  opacity: 0.9;
}

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

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

.btn-ghost:hover {
  border-color: var(--accent);
}

/* Sections */

.section {
  padding: 96px 0;
  text-align: center;
}

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  letter-spacing: -0.02em;
}

.section-sub {
  max-width: 640px;
  margin: 0 auto 48px;
  font-size: 1.05rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: left;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}

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

.card h3 {
  font-size: 1.15rem;
  color: var(--accent);
}

.card p {
  margin-bottom: 0;
}

.contact-block .btn {
  margin-top: 8px;
}

/* Footer */

.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive */

@media (max-width: 800px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 16px;
    display: none;
  }

  .nav.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    display: inline-block;
  }
}