:root {
  --bg: #0f1420;
  --panel: #1a2233;
  --panel-2: #202b42;
  --text: #e8edf6;
  --muted: #93a1ba;
  --accent: #4f8cff;
  --accent-2: #35c26f;
  --danger: #e05b5b;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
}

.wrap { max-width: 960px; margin: 0 auto; padding: 1.25rem; }

header.site {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .75rem 0;
}
.brand { font-size: 1.25rem; font-weight: 700; letter-spacing: .02em; }
.brand span { color: var(--accent); }

.lang-switch { display: flex; gap: .4rem; }
.lang-switch button {
  background: var(--panel); color: var(--muted);
  border: 1px solid #2b3752; border-radius: 8px; padding: .3rem .7rem;
  cursor: pointer; font-size: .9rem;
}
.lang-switch button.active { color: var(--text); border-color: var(--accent); }

main.grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-top: 1rem;
}
@media (max-width: 760px) { main.grid { grid-template-columns: 1fr; } }

.card {
  background: var(--panel); border: 1px solid #26324d;
  border-radius: var(--radius); padding: 1.5rem;
}
.card h1 { font-size: 1.6rem; margin-bottom: .5rem; }
.card h2 { font-size: 1.15rem; margin-bottom: .75rem; }
.card p { color: var(--muted); margin-bottom: .75rem; }

.qr-box { text-align: center; }
.qr-frame {
  background: #fff; border-radius: 12px; padding: 10px;
  display: inline-block; min-width: 220px; min-height: 220px;
}
.qr-frame img { display: block; width: 220px; height: 220px; image-rendering: pixelated; }
.countdown { margin-top: .75rem; font-variant-numeric: tabular-nums; color: var(--muted); }
.countdown b { color: var(--text); font-size: 1.1rem; }
.qr-error { color: var(--danger); margin-top: .75rem; display: none; }

.btn {
  display: inline-block; text-decoration: none; text-align: center;
  background: var(--accent); color: #fff; font-weight: 600;
  border: 0; border-radius: 10px; padding: .8rem 1.4rem; cursor: pointer;
}
.btn.green { background: var(--accent-2); }
.btn:active { transform: translateY(1px); }

ol.steps { color: var(--muted); padding-left: 1.25rem; }
ol.steps li { margin-bottom: .4rem; }

.version-line { margin-top: .75rem; color: var(--muted); font-size: .9rem; }

footer.site {
  margin-top: 2rem; padding: 1rem 0; color: var(--muted); font-size: .85rem;
  display: flex; gap: 1rem; flex-wrap: wrap;
}
footer.site a { color: var(--muted); }

.notice { font-size: .85rem; color: var(--muted); margin-top: 1rem; }
.prose h1 { margin-bottom: 1rem; }
.prose h2 { margin-top: 1.25rem; }
.prose ul { padding-left: 1.25rem; color: var(--muted); }