:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-text-light: #555;
  --color-accent: #2563eb;
  --color-border: #eaeaea;
  --color-card-bg: #fafafa;
  --shadow: 0 2px 10px rgba(0,0,0,0.05);
  --radius: 12px;
  --gap: 2rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
}

.container {
  width: min(90%, 960px);
  margin-inline: auto;
}

.hero {
  background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  font-weight: 600;
  font-size: 2.25rem;
  color: var(--color-text);
}

.content {
  padding: 0 0 4rem;
}

.section {
  padding: var(--gap) 0;
}

.section h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.lead {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
  font-weight: 400;
}

p {
  margin-bottom: 1rem;
  color: var(--color-text);
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.illustration {
  height: 180px;
  background: linear-gradient(135deg, #eef2ff 0%, #dbeafe 100%);
  border-radius: var(--radius);
  margin: 2rem 0;
}

/* Services cards */
.services .cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--color-card-bg);
  padding: 1.75rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

/* Tech columns */
.tech-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 1.5rem;
}

.tech-columns ul {
  padding-left: 1.25rem;
  margin-top: 0.5rem;
}

.tech-columns li {
  margin-bottom: 0.4rem;
}

/* Contacts */
.contacts .support-link {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: white;
  border-radius: 8px;
  font-weight: 500;
}

.contacts .support-link:hover {
  text-decoration: none;
  background: #1d4ed8;
}

/* Footer */
.footer {
  padding: 2rem 0;
  background: #f9fafb;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-text-light);
  text-align: center;
}