:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --text: #e8eaef;
  --muted: #9aa3b2;
  --accent: #5b8cff;
  --accent-soft: rgba(91, 140, 255, 0.12);
  --border: rgba(255, 255, 255, 0.08);
  --max: 720px;
  --radius: 14px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(1200px 600px at 10% -10%, #1a2240 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
}

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

header {
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(15, 17, 23, 0.85);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 40px 20px 64px;
}

.hero {
  padding: 24px 0 8px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}

.hero p {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 28px;
}

.card-grid {
  display: grid;
  gap: 14px;
  margin: 28px 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.badge {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
}

h2 {
  font-size: 1.35rem;
  margin: 36px 0 12px;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.05rem;
  margin: 24px 0 8px;
}

p, li { color: #c8ced8; }

ul { padding-left: 1.2rem; }

.meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 28px;
}

.lang-switch {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.lang-switch a {
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  text-decoration: none;
}

.lang-switch a.active,
.lang-switch a:hover {
  color: var(--accent);
  border-color: rgba(91, 140, 255, 0.35);
  background: var(--accent-soft);
}

section[lang] { scroll-margin-top: 80px; }

footer {
  border-top: 1px solid var(--border);
  padding: 24px 20px 40px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.contact-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin: 20px 0;
}

.contact-box strong { color: var(--text); }