* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  color: #1e1b2e; background: #f7f5fb; line-height: 1.7;
}
header {
  background: linear-gradient(135deg, #d634c9, #8e3be2, #2e8cf4);
  color: #fff; padding: 40px 20px; text-align: center;
}
header h1 { font-size: 26px; margin-bottom: 6px; }
header p { opacity: .9; font-size: 14px; }
main {
  max-width: 760px; margin: 0 auto; padding: 32px 20px 60px;
}
h2 { font-size: 19px; margin: 28px 0 10px; color: #3b2fbe; }
h3 { font-size: 15.5px; margin: 18px 0 6px; }
p, li { font-size: 14.5px; margin-bottom: 8px; }
ul { padding-left: 22px; margin-bottom: 10px; }
.box {
  background: #fff; border: 1px solid #e5e0f0;
  border-radius: 14px; padding: 16px 18px; margin: 14px 0;
}
.warn { background: #fcf3e3; border-color: #f0ddb0; }
a { color: #6e44ff; }
footer {
  text-align: center; font-size: 12px; color: #888;
  padding: 24px; border-top: 1px solid #e5e0f0;
}
code { background: #efeaff; padding: 1px 6px; border-radius: 6px; }