:root {
  --bg: #0b1020;
  --text: #eef2ff;
  --muted: #aab3c9;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-hover: rgba(255, 255, 255, 0.1);
  --border: rgba(255, 255, 255, 0.12);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.18), transparent 25%),
              radial-gradient(circle at 80% 30%, rgba(56, 189, 248, 0.15), transparent 28%),
              radial-gradient(circle at 50% 80%, rgba(16, 185, 129, 0.12), transparent 30%),
              var(--bg);
  color: var(--text);
  overflow: hidden;
}

#sky {
  position: fixed;
  inset: 0;
  z-index: 0;
}

.container {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  max-width: 760px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
}

.subtitle {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 1.1rem;
}

.thought {
  margin: 0 auto 34px;
  max-width: 620px;
  font-size: clamp(1.2rem, 2.5vw, 1.65rem);
  line-height: 1.6;
  margin-bottom:50px;
}

.question {
  margin: 0 0 20px;
  font-size: 1rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.signals {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.signals button {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 14px 20px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 1rem;
  backdrop-filter: blur(10px);
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.signals button:hover {
  transform: translateY(-1px);
  background: var(--panel-hover);
  border-color: rgba(255, 255, 255, 0.22);
}

.signals span {
  margin-left: 8px;
  font-weight: 700;
}

.note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.footnote {
  margin-top: 34px;
  color: var(--muted);
  font-size: 0.92rem;
  opacity: 0.85;
}

@media (max-width: 640px) {
  .signals {
    flex-direction: column;
    align-items: center;
  }

  .signals button {
    width: min(320px, 100%);
  }
}