:root {
  --bg: #07111f;
  --bg-soft: #0d1b2d;
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.12);
  --text: #e8eef8;
  --muted: #a8b7cc;
  --primary: #4db2ff;
  --primary-dark: #1e8ddd;
  --accent: #7ef0c2;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  --radius: 18px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top right, rgba(77, 178, 255, 0.12), transparent 28%),
    linear-gradient(180deg, #06101d 0%, #0a1423 100%);
  color: var(--text);
  line-height: 1.6;
}

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

.container {
  width: min(92%, var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: rgba(6, 16, 29, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.4px;
  font-size: 1.1rem;
}

nav {
  display: flex;
  gap: 22px;
}

nav a {
  color: var(--muted);
  transition: color 0.2s ease;
}

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

.hero {
  padding: 88px 0 70px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 42px;
  align-items: center;
}

.eyebrow,
.section-label {
  text-transform: uppercase;
  letter-spacing: 1.6px;
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 12px;
  font-weight: 700;
}

.hero h1,
.section h2 {
  margin: 0 0 18px;
  line-height: 1.15;
}

.hero h1 {
  font-size: clamp(2.3rem, 5vw, 4.4rem);
  max-width: 12ch;
}

.hero-text,
.section-text,
.section p,
.feature p,
.contact-box p {
  color: var(--muted);
  max-width: 68ch;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 13px 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: var(--shadow);
}

.btn-secondary {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.hero-card,
.feature,
.contact-box {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 22px;
}

.screen {
  border-radius: 22px;
  background: linear-gradient(180deg, #0d2036 0%, #08111b 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 18px;
  min-height: 330px;
}

.screen-top {
  height: 18px;
  width: 72px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  margin: 0 auto 24px;
}

.screen-body {
  border-radius: 14px;
  padding: 18px;
  height: calc(100% - 42px);
  background:
    linear-gradient(180deg, rgba(77, 178, 255, 0.08), rgba(126, 240, 194, 0.03)),
    rgba(0, 0, 0, 0.2);
}

.screen-line {
  height: 12px;
  border-radius: 999px;
  background: rgba(126, 240, 194, 0.7);
  margin-bottom: 14px;
}

.w-60 { width: 60%; }
.w-70 { width: 70%; }
.w-80 { width: 80%; }
.w-90 { width: 90%; }

.screen-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 26px;
}

.screen-grid span {
  background: rgba(255, 255, 255, 0.06);
  padding: 12px;
  border-radius: 12px;
  text-align: center;
  color: #d9f6eb;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.card-caption {
  color: var(--muted);
  margin: 14px 4px 0;
  font-size: 0.95rem;
}

.section {
  padding: 76px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.025);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.feature-list {
  display: grid;
  gap: 18px;
}

.feature {
  padding: 22px;
}

.feature h3 {
  margin-top: 0;
  margin-bottom: 8px;
}

.contact-section {
  padding-bottom: 96px;
}

.contact-box {
  padding: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.contact-actions {
  flex-shrink: 0;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0 40px;
  color: var(--muted);
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .hero-grid,
  .two-col,
  .contact-box {
    grid-template-columns: 1fr;
    display: grid;
  }

  .contact-actions {
    justify-self: start;
  }
}

@media (max-width: 700px) {
  .nav {
    flex-direction: column;
    gap: 12px;
  }

  nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
  }

  .hero {
    padding-top: 64px;
  }

  .section,
  .contact-section {
    padding: 60px 0;
  }
}