:root {
  --bg: #050a1c;
  --panel: #0b1538;
  --border: #2456c8;
  --blue: #39a0ff;
  --yellow: #ffe500;
  --text: #ffffff;
  --muted: #9fb2d9;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: radial-gradient(circle at 50% -10%, #12307a 0, #0a1433 45%, var(--bg) 100%) fixed;
  background-color: var(--bg);
  color: var(--text);
  font-family: "Cairo", system-ui, -apple-system, "Segoe UI", Tahoma, sans-serif;
  line-height: 1.9;
}
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 56px; }
header { text-align: center; margin-bottom: 24px; }
header img { width: 96px; height: 96px; border-radius: 22px; border: 2px solid var(--blue); }
h1 { font-size: 1.7rem; margin: 12px 0 4px; }
.sub { color: var(--muted); margin: 0; font-size: .95rem; }
section {
  background: rgba(11, 21, 56, .92);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px 20px;
  margin: 14px 0;
}
h2 { color: var(--yellow); font-size: 1.15rem; margin: 0 0 6px; }
ul, ol { margin: 0; padding-inline-start: 22px; }
li { margin: 4px 0; }
a { color: var(--blue); }
.note { color: var(--muted); font-size: .9rem; }
.btn {
  display: inline-block;
  background: linear-gradient(90deg, #39a0ff, #1e6bff);
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  padding: 10px 22px;
  border-radius: 12px;
}
nav { text-align: center; margin-top: 28px; }
nav a { margin: 0 10px; }
footer { text-align: center; color: var(--muted); font-size: .85rem; margin-top: 18px; }