:root {
  color-scheme: dark;
  --bg-top: #061121;
  --bg-bottom: #111c28;
  --panel: rgba(10, 18, 28, 0.72);
  --panel-border: rgba(255, 255, 255, 0.1);
  --text: #f7f4ee;
  --muted: #d8c8a7;
  --accent: #f2c978;
  --accent-strong: #ffd766;
  --link: #ffe4a3;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    "Pretendard Variable",
    "Pretendard",
    "Noto Sans KR",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 76% 36%, rgba(245, 190, 92, 0.24), transparent 20%),
    radial-gradient(circle at 24% 56%, rgba(53, 194, 222, 0.20), transparent 18%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
  min-height: 100vh;
}

a {
  color: var(--link);
}

.page-shell {
  width: min(1040px, calc(100% - 40px));
  margin: 0 auto;
  padding: 40px 0 64px;
}

.page-shell--narrow {
  width: min(760px, calc(100% - 40px));
}

.hero,
.subpage-header,
.card {
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
}

.hero {
  padding: 40px 32px;
  border-radius: 28px;
}

.hero__badge,
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.hero h1,
.subpage-header h1 {
  margin: 18px 0 12px;
  font-size: clamp(2.2rem, 4.6vw, 4rem);
  line-height: 1.04;
}

.hero__lead,
.subpage-header p,
.card p,
.card li {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}

.button--primary {
  background: var(--accent-strong);
  color: #1e1b15;
}

.button--ghost {
  border: 1px solid var(--panel-border);
  color: var(--text);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.stack {
  display: grid;
  gap: 18px;
}

.card {
  padding: 26px 24px;
  border-radius: 24px;
}

.card--full {
  grid-column: 1 / -1;
}

.card h2 {
  margin: 0 0 14px;
  font-size: 1.3rem;
}

.feature-list {
  margin: 0;
  padding-left: 20px;
}

.feature-list li + li {
  margin-top: 8px;
}

.subpage-header {
  padding: 28px 24px;
  border-radius: 24px;
  margin-bottom: 18px;
}

.muted {
  opacity: 0.86;
}

@media (max-width: 760px) {
  .page-shell,
  .page-shell--narrow {
    width: min(100% - 24px, 100%);
    padding: 20px 0 40px;
  }

  .hero,
  .subpage-header,
  .card {
    border-radius: 22px;
  }

  .hero {
    padding: 28px 20px;
  }

  .content-grid {
    grid-template-columns: 1fr;
  }

  .card--full {
    grid-column: auto;
  }
}