:root {
  color-scheme: dark;
  --bg: #070916;
  --panel: #111832;
  --panel-soft: #172348;
  --text: #f8fbff;
  --muted: #c9d4e8;
  --cyan: #67e8f9;
  --pink: #f9a8d4;
  --line: rgba(148, 163, 184, .28);
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 0%, rgba(76, 29, 149, .28), transparent 34rem),
    linear-gradient(155deg, #070916, #091c1a 72%, #070916);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}
a { color: var(--cyan); }
a:hover { color: var(--pink); }
.shell { width: min(920px, calc(100% - 32px)); margin: 0 auto; padding: 28px 0 56px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 28px; }
.brand { color: white; font-size: 1.45rem; font-weight: 950; letter-spacing: -.03em; text-decoration: none; }
.back { font-weight: 800; }
.hero, .card {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(17, 24, 50, .96), rgba(9, 28, 26, .94));
  box-shadow: 0 24px 70px rgba(0,0,0,.35);
}
.hero { padding: clamp(24px, 6vw, 52px); margin-bottom: 20px; }
.eyebrow { margin: 0 0 8px; color: var(--pink); font-size: .78rem; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(2.25rem, 8vw, 4.5rem); line-height: 1; letter-spacing: -.055em; }
.lede { max-width: 700px; margin: 18px 0 0; color: var(--muted); font-size: 1.08rem; }
.card { padding: clamp(22px, 5vw, 38px); }
h2 { margin: 2rem 0 .55rem; color: var(--cyan); font-size: 1.35rem; line-height: 1.25; }
h2:first-child { margin-top: 0; }
h3 { margin: 1.3rem 0 .35rem; }
p, li { color: var(--muted); }
strong { color: white; }
ul, ol { padding-left: 1.35rem; }
.notice { padding: 15px 17px; border: 1px solid rgba(103, 232, 249, .45); border-radius: 15px; background: rgba(3, 25, 35, .7); }
.action {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  margin: 6px 0;
  padding: 10px 18px;
  border-radius: 14px;
  background: linear-gradient(90deg, #7c3aed, #be185d);
  color: white;
  font-weight: 900;
  text-decoration: none;
}
.meta { color: var(--muted); font-size: .9rem; }
.footer { display: flex; flex-wrap: wrap; gap: 10px 18px; padding: 22px 4px; color: var(--muted); font-size: .85rem; }
@media (max-width: 540px) { .topbar { align-items: flex-start; flex-direction: column; } }