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

:root {
  --bg-page: #f4f7fb;
  --bg-surface: #ffffff;
  --bg-soft: #f0f4f8;
  --text-main: #111827;
  --text-muted: #4b5563;
  --brand-700: #0f2e52;
  --brand-600: #1a4a7a;
  --brand-500: #2563a8;
  --brand-100: #dbeafe;
  --brand-50: #eff6ff;
  --line: #d1dce8;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 8px rgba(15, 46, 82, 0.07);
  --shadow-md: 0 4px 20px rgba(15, 46, 82, 0.13);
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --container: 1100px;
  --transition: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  color: var(--text-main);
  background: var(--bg-page);
  font-family: "Inter", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 var(--space-3);
  line-height: 1.25;
  font-weight: 700;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }

p {
  margin: 0 0 var(--space-4);
}

ul {
  margin: 0 0 var(--space-4);
}

a {
  color: var(--brand-500);
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}