:root {
  --bg: #070b16;
  --bg2: #0d1326;
  --text: #eef2ff;
  --muted: #98a2b3;
  --blue: #4da3ff;
  --purple: #8b5cf6;
  --cyan: #22d3ee;
  --yellow: #facc15;
  --card: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.12);
  --success: #22c55e;
  --danger: #ef4444;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(77,163,255,0.15), transparent 25%),
    radial-gradient(circle at top right, rgba(139,92,246,0.18), transparent 25%),
    linear-gradient(135deg, var(--bg), var(--bg2));
}

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

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 22, 0.78);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 74px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.5px;
  flex-shrink: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  box-shadow: 0 12px 30px rgba(77,163,255,0.25);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 0.95rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  min-height: 48px;
  border-radius: 14px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(90deg, var(--blue), var(--purple));
  color: white;
  box-shadow: 0 16px 40px rgba(77,163,255,0.25);
}

.btn-secondary {
  background: rgba(255,255,255,0.03);
  border-color: rgba(255,255,255,0.12);
  color: var(--text);
}

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  border-radius: 14px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  position: relative;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 999px;
  transition: 0.25s ease;
  position: absolute;
}

.nav-toggle span {
  position: absolute;
}

.nav-toggle::before {
  transform: translateY(-6px);
}

.nav-toggle::after {
  transform: translateY(6px);
}

.mobile-menu {
  display: none;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(7, 11, 22, 0.95);
}

.mobile-menu.show {
  display: block;
}

.mobile-menu-inner {
  padding: 14px 0 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mobile-menu a {
  padding: 12px 14px;
  border-radius: 12px;
  color: var(--muted);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
}

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

.mobile-menu .btn {
  width: 100%;
  margin-top: 6px;
}

section {
  padding: 24px 0 72px;
}

.footer {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 28px 0 38px;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 860px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }
}

@media (max-width: 640px) {
  .nav-inner {
    min-height: auto;
    padding: 14px 0;
  }
}