:root {
  color-scheme: light;
  --ink: #1f2421;
  --muted: #6c746f;
  --line: #dde1de;
  --panel: #ffffff;
  --field: #f7f8f6;
  --accent: #2f8f5b;
  --accent-dark: #276f4a;
  --warning: #d97706;
  --notice: #eab308;
  --bg-a: #eef0ed;
  --bg-b: #faf9f3;
  font-family:
    Inter, Pretendard, "Segoe UI", "Noto Sans KR", system-ui, -apple-system,
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(47, 143, 91, 0.1), transparent 42%),
    linear-gradient(225deg, rgba(234, 179, 8, 0.14), transparent 38%),
    linear-gradient(180deg, var(--bg-a), var(--bg-b));
}

.demo-hub {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px 20px;
}

.hub-panel {
  width: min(680px, 100%);
  padding: 32px;
  border: 1px solid rgba(31, 36, 33, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 24px 70px rgba(31, 36, 33, 0.1);
  backdrop-filter: blur(16px);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-dark);
  font-size: 0.86rem;
  font-weight: 850;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.summary {
  margin: 16px 0 28px;
  color: var(--muted);
  line-height: 1.65;
}

.demo-list {
  display: grid;
  gap: 12px;
}

.demo-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 78px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: inherit;
  background: var(--field);
  text-decoration: none;
}

.demo-link:hover {
  border-color: rgba(47, 143, 91, 0.36);
  background: rgba(47, 143, 91, 0.08);
}

.demo-link span:first-child {
  display: grid;
  gap: 4px;
}

.demo-link strong {
  font-size: 1rem;
}

.demo-link small {
  color: var(--muted);
  line-height: 1.45;
}

@media (max-width: 520px) {
  .hub-panel {
    padding: 22px;
  }

  .demo-link {
    align-items: flex-start;
  }
}