:root {
  --bg: #0b1220;
  --surface: #111a2e;
  --surface-2: #0f1728;
  --text: #e6eaf2;
  --muted: #93a1b6;
  --primary: #4ea8de;
  --primary-600: #3a86c8;
  --accent: #7ad3a5;
  --danger: #ef476f;
  --shadow: 0 8px 24px rgba(0,0,0,0.35);
  --radius: 14px;
  --radius-sm: 10px;
  --container: 1160px;
}

* {
    box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

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

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

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(11,18,32,0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.logo {
    font-weight: 700;
    letter-spacing: 0.3px;
    font-size: 1.3rem;
}

.logo span {
    color: var(--primary);
}

.main-nav {
    display: flex;
    gap: 14px;
    align-items: center;
}

.nav-link {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--muted);
    transition: background .2s ease, color .2s ease, transform .2s ease;
}

.nav-link:hover {
    background: var(--surface);
    color: var(--text);
    transform: translateY(-1px);
}

.nav-link.active {
    color: var(--text);
    background: var(--surface);
}

.btn { display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px; padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    border: 1px solid transparent;
    transition: transform .18s ease, box-shadow .18s ease, background .2s ease, color .2s ease;
}

.btn-primary {
    background: var(--primary);
    color: #04101a;
}

.btn-primary:hover {
    background: var(--primary-600);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.btn-outline {
    border-color: rgba(255,255,255,0.18);
    color: var(--text);
}

.btn-outline:hover {
    background: var(--surface);
    border-color: rgba(255,255,255,0.28);
}

.btn-dark {
    background: #0e2236;
    color: var(--text);
    border-color: rgba(255,255,255,0.09);
}

.btn-dark:hover {
    background: #16314a;
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.section {
    padding: 56px 0;
}

.section-accent {
    background: linear-gradient(180deg, rgba(78,168,222,0.08), rgba(122,211,165,0.06));
    border-top: 1px solid rgba(255,255,255,0.06);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.section-title {
    font-size: 2rem;
    margin: 8px 0 28px;
}

.hero {
    padding: 48px 0 24px;
    background: radial-gradient(1000px 600px at 80% -10%, rgba(78,168,222,0.25), transparent) radial-gradient(900px 600px at -10% 0%, rgba(122,211,165,0.18), transparent)
 }

.hero-inner {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 24px;
    align-items: stretch;
}

.hero-text h1 {
    font-size: 2.2rem;
    line-height: 1.25;
    margin: 0 0 12px;
}

.hero-text p {
  color: var(--muted);
  margin: 0 0 18px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.card {
  background: var(--surface-2);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 2px 0 rgba(0,0,0,0.15) inset;
}

.price {
  margin-top: 8px;
  font-weight: 700;
  color: var(--accent);
}

.small {
  font-size: 0.9rem;
}

.grid {
  display: grid;
  gap: 10px;
  padding-top: 10px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.preimushchestvo {
  text-align: left;
}

.preimushchestvo .icon {
  font-size: 28px;
  margin-bottom: 8px;
}

.cta-inner {
  text-align: center;
  padding: 28px 0;
}

.cta-inline {
  display: flex;
  justify-content: space-between;
  align-items: center; 
  gap: 12px;
  margin-top: 28px;
}

.site-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  background: #0b1220;
}

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



.hover-lift {
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  will-change: transform;
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(255,255,255,0.14);
}

.form .form-row { 
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px; }

label {
  color: var(--text);
  font-weight: 600;
}

input, select, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,0.14);
  background: #0c1526;
  color: var(--text);
  border-radius: 10px;
  outline: none;
  transition: border-color .18s ease, box-shadow .18s ease;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(78,168,222,0.25);
}

.error
{ color: var(--danger);
  min-height: 16px;
}

.form-success {
  margin-top: 10px;
  padding: 10px 12px;
  background: rgba(122,211,165,0.12);
  border: 1px solid rgba(122,211,165,0.5);
  color: #b6f2d2;
  border-radius: 10px;
}

.spisok {
  padding-left: 18px;
  margin: 8px 0;
}

.spisok li {
  margin: 6px 0;
}

@media (max-width: 1024px) {
  header, nav, footer {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  nav a {
    display: block;
    margin: 10px 0;
  }

  section {
    padding: 20px;
  }

  .container {
    width: 95%;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  h1, h2, h3 {
    font-size: 1.5em;
  }

  p {
    font-size: 1em;
    line-height: 1.4em;
  }

  nav ul {
    flex-direction: column;
    gap: 10px;
  }

  nav a {
    font-size: 1.1em;
  }

  img {
    max-width: 100%;
    height: auto;
  }

  .grid, .services, .about, .contact {
    display: block;
    width: 100%;
  }

  footer {
    font-size: 0.9em;
    padding: 10px;
  }
}