:root {
  --bg: #f3f6fb;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --primary: #2563eb;
  --primary-soft: #dbeafe;
  --shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Segoe UI", "Noto Sans Georgian", "DejaVu Sans", Arial, sans-serif;
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(circle at 0% 0%, #e6efff 0, transparent 38%),
    radial-gradient(circle at 100% 0%, #eef4ff 0, transparent 30%),
    var(--bg);
}

.container {
  max-width: 1020px;
  margin: 40px auto;
  padding: 34px 36px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

header {
  padding: 0 0 18px;
  border-bottom: 1px solid var(--line);
}

.header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 10px;
}

.lang-switch {
  display: inline-flex;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f8fafc;
}

.lang-btn {
  border: 0;
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #334155;
  background: transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.lang-btn:hover {
  background: #eef2ff;
  color: #1e3a8a;
}

.lang-btn.is-active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.26);
}

h1,
h2,
h3 {
  margin: 0 0 10px;
  line-height: 1.3;
  color: var(--text);
}

h1 {
  font-size: clamp(1.45rem, 1.1rem + 1.1vw, 2rem);
  letter-spacing: -0.01em;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(1.15rem, 0.98rem + 0.6vw, 1.45rem);
}

h3 {
  margin-top: 16px;
  margin-bottom: 10px;
  font-size: 1.04rem;
  color: #1e293b;
}

p {
  margin: 8px 0;
  color: var(--muted);
}

header p {
  margin: 6px 0;
}

strong {
  color: var(--text);
}

section {
  margin-top: 22px;
  padding: 18px 18px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

li {
  margin-bottom: 8px;
  color: #334155;
}

a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

a:hover {
  color: #1d4ed8;
  border-bottom-color: currentColor;
}

@media (max-width: 768px) {
  .container {
    margin: 14px;
    padding: 22px 18px;
    border-radius: 12px;
  }

  .header-top {
    flex-direction: column;
    align-items: stretch;
  }

  .lang-switch {
    width: fit-content;
  }

  section {
    padding: 14px 12px 8px;
  }
}