:root {
  color-scheme: dark;
  --bg: #07070a;
  --panel: #111118;
  --text: #f7f7fb;
  --muted: #b7b7c5;
  --line: #2a2a35;
  --accent: #8b5cf6;
  --accent-2: #22d3ee;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% -10%, rgba(139, 92, 246, .28), transparent 34rem),
    radial-gradient(circle at 100% 10%, rgba(34, 211, 238, .12), transparent 30rem),
    var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: #c4b5fd; }
a:hover { color: #ddd6fe; }

.shell { width: min(880px, calc(100% - 32px)); margin: 0 auto; }

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 0;
}

.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; font-weight: 750; }
.mark { width: 36px; height: 36px; border-radius: 12px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); box-shadow: 0 10px 30px rgba(139,92,246,.3); }
nav { display: flex; gap: 16px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; }

main { padding: 48px 0 80px; }
.card { background: rgba(17,17,24,.88); border: 1px solid var(--line); border-radius: 24px; padding: clamp(24px, 5vw, 56px); box-shadow: 0 28px 90px rgba(0,0,0,.32); }
.eyebrow { color: #a78bfa; font-size: 13px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 8px 0 12px; font-size: clamp(36px, 7vw, 64px); line-height: 1.04; letter-spacing: -.04em; }
h2 { margin-top: 38px; font-size: 22px; line-height: 1.25; }
p, li { color: var(--muted); }
strong { color: var(--text); }
.lead { font-size: 19px; max-width: 680px; }
.meta { margin: 18px 0 30px; color: #8f8fa0; font-size: 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 30px; }
.tile { display: block; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.025); text-decoration: none; }
.tile strong { display: block; margin-bottom: 6px; }
.tile span { color: var(--muted); }
.notice { margin: 28px 0; padding: 18px 20px; border-left: 3px solid var(--accent); border-radius: 12px; background: rgba(139,92,246,.08); color: var(--muted); }
footer { padding: 28px 0 44px; border-top: 1px solid var(--line); color: #8f8fa0; font-size: 14px; }

@media (max-width: 620px) {
  header { align-items: flex-start; flex-direction: column; }
  main { padding-top: 24px; }
  .card { border-radius: 18px; }
}