:root {
  --bg: #080d18;
  --panel: #111c30;
  --border: #263951;
  --text: #edf3ff;
  --muted: #9aabc3;
  --accent: #35d6c5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

header {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

h1 {
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.15;
}

h2, h3 {
  color: var(--text);
}

p {
  color: var(--muted);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0;
}

nav a, button {
  display: inline-block;
  padding: 12px 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  color: var(--accent);
  text-decoration: none;
}

main {
  max-width: 1100px;
  margin: 35px auto;
}

section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

article {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--panel);
}

.notice {
  margin-top: 28px;
  padding: 16px;
  border-left: 4px solid var(--accent);
  background: #10252a;
  border-radius: 8px;
}

footer {
  margin-top: 50px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
}

@media (max-width: 600px) {
  body {
    padding: 16px;
  }
}