:root {
  --bg: #111827;
  --panel: #1f2937;
  --text: #f9fafb;
  --muted: #c7d2fe;
  --btn: #f59e0b;
  --btn2: #38bdf8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Segoe UI, Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #374151 0%, var(--bg) 55%);
  min-height: 100vh;
}

.wrap {
  width: min(900px, 92vw);
  margin: 48px auto;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.subtitle {
  margin: 0 0 24px;
  color: var(--muted);
}

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 16px;
}

.card h2 {
  margin-top: 0;
}

.btn {
  display: inline-block;
  text-decoration: none;
  color: #0b1020;
  background: var(--btn);
  font-weight: 700;
  padding: 10px 14px;
  border-radius: 10px;
}

.btn.alt {
  background: var(--btn2);
}

.notice {
  background: linear-gradient(180deg, #fde047 0%, #facc15 100%);
  border: 4px solid #eab308;
  border-radius: 16px;
  color: #1f2937;
  padding: 18px;
  margin-top: 12px;
  box-shadow: 0 10px 26px rgba(250, 204, 21, 0.35);
}

.notice h2 {
  margin: 0 0 8px;
}

.notice p {
  margin: 0;
  line-height: 1.45;
  font-weight: 600;
}