:root {
  --bg: #0b0f16;
  --bg-alt: #121a26;
  --card: #141f2e;
  --text: #e8eef7;
  --muted: #a9b7cb;
  --accent: #60a5fa;
  --accent2: #22d3ee;
  --line: #243349;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}
.container { width: min(1100px, 92%); margin: 0 auto; }
.hero {
  position: relative;
  min-height: 68vh;
  background:
    radial-gradient(1000px 500px at 70% -10%, rgba(34,211,238,.2), transparent 60%),
    radial-gradient(700px 400px at 10% 0%, rgba(96,165,250,.25), transparent 60%),
    linear-gradient(180deg, #0b0f16 0%, #0f1724 100%);
  border-bottom: 1px solid var(--line);
}
.overlay { position: absolute; inset: 0; background: linear-gradient(to bottom, rgba(0,0,0,.05), rgba(0,0,0,.35)); }
.nav { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: center; padding: 20px 0; }
.brand { font-weight: 800; letter-spacing: .3px; }
.links a { color: var(--muted); text-decoration: none; margin-left: 16px; }
.links a:hover, .links a.active { color: var(--text); }
.hero-content { position: relative; z-index: 2; padding: 80px 0 90px; }
.badge { display: inline-block; padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--accent2); font-weight: 700; font-size: .78rem; }
h1 { margin: 16px 0 8px; font-size: clamp(2rem, 4.6vw, 4rem); line-height: 1.1; }
.page-title { margin: 0; font-size: clamp(1.6rem, 3.8vw, 2.5rem); }
.sub { color: var(--muted); max-width: 700px; }
.cta { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 11px 16px; border-radius: 10px; text-decoration: none; font-weight: 700; border: 1px solid var(--line); }
.btn.primary { background: linear-gradient(90deg, var(--accent), var(--accent2)); color: #07101e; border: none; }
.btn.ghost { color: var(--text); }
.section { padding: 70px 0; }
.section.alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { margin: 0 0 20px; font-size: clamp(1.4rem, 3vw, 2rem); }
.grid { display: grid; gap: 14px; }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.card h3 { margin: 0 0 8px; }
.card p, .card li { color: var(--muted); }
ul { margin: 8px 0 0 18px; padding: 0; }
code { display: inline-block; margin-top: 8px; background: #0b1220; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; color: #d6e5ff; }
.hint { color: var(--muted); margin-top: 16px; }
.footer { border-top: 1px solid var(--line); padding: 20px 0; color: var(--muted); font-size: .95rem; }

.nav-top { padding: 18px 0; border-bottom: 1px solid var(--line); }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.auth-box { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
#authState {
  background: #111a29;
  color: #eaf2ff;
  border: 1px solid #2a3a54;
  border-radius: 10px;
  padding: 9px 12px;
  min-width: 170px;
  font-weight: 600;
}
.hidden { display: none; }
.notice { color: var(--accent2); font-weight: 600; }
.note-card { margin-top: 16px; }
.shop-item strong { display: block; margin: 8px 0 12px; color: #d7e8ff; }

@media (max-width: 900px) {
  .grid.three, .grid.two { grid-template-columns: 1fr; }
}