:root {
  --b5: #6B55E6;
  --b6: #4F38BD;
  --dark: #1E1B4B;
  --muted: #64748B;
  --bg: #F8F7FF;
  --w: #FFF;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Nunito', sans-serif;
  color: var(--dark);
  background: var(--bg);
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
.c { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(79, 56, 189, .1);
}
.nav-i {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}
.nav-l {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--b6);
  font-weight: 900;
  font-size: 1.1rem;
}
.nav-l img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}
.back-link {
  color: var(--b6);
  font-weight: 700;
  font-size: .95rem;
}
.max-w-3xl { max-width: 768px; }
.mx-auto { margin-left: auto; margin-right: auto; }
.py-12 { padding-top: 48px; padding-bottom: 48px; }
.card {
  background: var(--w);
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 8px 30px rgba(79, 56, 189, .08);
  border: 1px solid rgba(79, 56, 189, .08);
}
.prose h1, .prose h2, .prose h3 {
  line-height: 1.25;
  margin: 1.4em 0 .6em;
}
.prose h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin-top: 0; }
.prose h2 { font-size: 1.3rem; }
.prose h3 { font-size: 1.05rem; }
.prose p, .prose li { color: #2f2b58; }
.prose p { margin: .8em 0; }
.prose ul { padding-left: 1.2rem; }
.prose .muted { color: var(--muted); font-size: .95rem; }
.foot {
  margin-top: 20px;
  border-top: 1px solid rgba(79, 56, 189, .12);
  background: #fff;
}
.foot-i {
  min-height: 78px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 18px;
  padding-bottom: 18px;
}
.foot-l {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--b6);
  font-weight: 900;
}
.foot-l img {
  width: 30px;
  height: 30px;
  border-radius: 8px;
}
.foot-t {
  color: var(--muted);
  font-size: .9rem;
  margin: 0;
}
.foot-k {
  list-style: none;
  display: inline-flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 0;
  padding: 0;
}
.foot-k a { color: var(--muted); font-weight: 700; font-size: .92rem; }
.foot-k a:hover, .back-link:hover { color: var(--b6); }
@media (max-width: 768px) {
  .card { padding: 22px; }
}