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

body {
  background:
    radial-gradient(ellipse at 10% 10%, #c8dfc0 0%, transparent 50%),
    radial-gradient(ellipse at 80% 5%,  #b8d8ed 0%, transparent 45%),
    radial-gradient(ellipse at 5%  80%, #d4c9b8 0%, transparent 45%),
    radial-gradient(ellipse at 90% 75%, #c2cfe8 0%, transparent 45%),
    radial-gradient(ellipse at 55% 90%, #f0c8bc 0%, transparent 40%),
    radial-gradient(ellipse at 40% 40%, #e8ede4 0%, transparent 55%),
    #eef2ec;
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  color: #2a2a2a;
}

.back-btn {
  position: fixed;
  top: 16px;
  left: 20px;
  font-size: 12px;
  letter-spacing: 1px;
  color: #888;
  text-decoration: none;
  transition: color 0.15s;
  z-index: 10;
}
.back-btn:hover { color: #111; }

.cs-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 24px;
}

.cs-emoji {
  font-size: 52px;
  margin-bottom: 16px;
}

.cs-title {
  font-size: clamp(52px, 12vw, 120px);
  font-weight: 900;
  letter-spacing: -3px;
  line-height: 1;
  color: #2a2a2a;
  margin-bottom: 10px;
}

.cs-sub {
  font-size: 14px;
  color: #666;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}

.cs-badge {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 20px;
  border: 1px solid rgba(0,0,0,0.15);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #555;
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(8px);
  margin-bottom: 24px;
}

.cs-note {
  font-size: 13px;
  color: #888;
  line-height: 1.8;
}