@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Playfair+Display:wght@600;700;800&display=swap');

:root {
  --bg-primary: #FAFAF9;
  --bg-secondary: #F4F4F5;
  --bg-card: #FFFFFF;
  --text-primary: #18181B;
  --text-secondary: #52525B;
  --accent: #166534;
  --accent-hover: #14532D;
  --accent-light: #DCFCE7;
  --vk-blue: #0077FF;
  --vk-bg: #F0F7FF;
  --border: #E4E4E7;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Playfair Display', Georgia, serif;
  color: var(--text-primary);
  line-height: 1.2;
  font-weight: 700;
}

a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- HEADER --- */
header {
  background: rgba(250, 250, 249, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Playfair Display', serif;
  font-size: 24px;
  font-weight: 800;
  color: var(--accent);
}
.brand-icon {
  font-size: 28px;
}
nav ul {
  display: flex;
  gap: 8px;
  list-style: none;
}
nav a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
}
nav a:hover, nav a.active {
  background: var(--bg-secondary);
  color: var(--accent);
}

/* --- VK BANNER --- */
.vk-banner {
  background: var(--vk-bg);
  border: 1px solid #BFDBFE;
  border-radius: 12px;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.vk-banner-text {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: #1E3A8A;
  font-weight: 500;
}
.vk-banner-text svg {
  width: 24px;
  height: 24px;
  fill: var(--vk-blue);
  flex-shrink: 0;
}
.btn-vk {
  background: var(--vk-blue);
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background 0.2s;
}
.btn-vk:hover { background: #0066DB; }

/* --- HERO --- */
.hero {
  padding: 60px 0 80px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 56px);
  margin-bottom: 20px;
  color: var(--text-primary);
}
.hero p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.btn-secondary {
  background: white;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* --- SECTIONS --- */
section { padding: 60px 0; }
.section-title {
  font-size: clamp(28px, 4vw, 36px);
  margin-bottom: 12px;
  text-align: center;
}
.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  font-size: 16px;
}

/* --- GRID & CARDS --- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}
.card-icon {
  font-size: 32px;
  margin-bottom: 16px;
}
.card h3 {
  font-size: 20px;
  margin-bottom: 10px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
}
.card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: 16px;
}
.card-tag {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  align-self: flex-start;
}

/* --- FOOTER --- */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 60px 0 40px;
  margin-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-weight: 600;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  color: var(--text-primary);
  font-size: 15px;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .nav { flex-direction: column; gap: 16px; }
  nav ul { flex-wrap: wrap; justify-content: center; }
  .hero { padding: 40px 0 60px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .vk-banner { flex-direction: column; text-align: center; }
}