:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #080307;
  color: #fff1e4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 18% 8%, rgba(177, 15, 54, 0.28), transparent 25rem),
    radial-gradient(circle at 88% 22%, rgba(86, 16, 104, 0.3), transparent 30rem),
    linear-gradient(145deg, #080307, #25000d 48%, #150316);
}

a {
  color: #ffb09e;
}

.site-header {
  width: min(100% - 32px, 980px);
  margin: 0 auto;
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand,
.play-link {
  font-weight: 850;
  text-decoration: none;
}

.brand {
  color: #fff1e4;
}

.play-link,
.cta a {
  border-radius: 999px;
  background: linear-gradient(135deg, #b10f36, #f05a28);
  color: #fff1e4;
}

.play-link {
  padding: 10px 15px;
  font-size: 0.9rem;
}

main {
  padding: 56px 16px 80px;
}

.guide {
  width: min(100%, 760px);
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 12px;
  color: #ff9a89;
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 850px;
  margin-bottom: 22px;
  font-size: clamp(2.7rem, 8vw, 5.7rem);
  line-height: 0.98;
}

h2 {
  font-size: clamp(1.3rem, 4vw, 1.75rem);
}

p,
li {
  color: rgba(255, 241, 228, 0.78);
  font-size: 1.03rem;
  line-height: 1.7;
}

.intro {
  max-width: 700px;
  font-size: clamp(1.1rem, 3vw, 1.25rem);
}

.notice,
.idea-panel,
.cta {
  border: 1px solid rgba(255, 241, 228, 0.16);
  border-radius: 24px;
  background: rgba(255, 241, 228, 0.06);
}

.notice {
  margin: 32px 0 56px;
  padding: 18px 20px;
  color: rgba(255, 241, 228, 0.76);
  line-height: 1.6;
}

.guide-section {
  padding: 30px 0;
  border-top: 1px solid rgba(255, 241, 228, 0.12);
}

.guide-section p {
  margin-bottom: 0;
}

.idea-panel,
.cta {
  margin-top: 34px;
  padding: clamp(22px, 5vw, 36px);
}

.idea-panel ul {
  margin-bottom: 0;
  padding-left: 22px;
}

.idea-panel li::marker {
  color: #ff9a89;
}

.cta {
  background: linear-gradient(135deg, rgba(177, 15, 54, 0.28), rgba(86, 16, 104, 0.24));
}

.cta a {
  min-height: 48px;
  margin-top: 8px;
  padding: 0 20px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-weight: 850;
}

footer {
  width: min(100% - 32px, 980px);
  margin: 0 auto;
  padding: 34px 0 48px;
  border-top: 1px solid rgba(255, 241, 228, 0.12);
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

footer a {
  color: rgba(255, 241, 228, 0.7);
  font-size: 0.86rem;
}

footer p {
  margin: 24px 0 0;
  font-size: 0.82rem;
}

@media (max-width: 520px) {
  .site-header {
    align-items: flex-start;
  }

  .brand {
    max-width: 140px;
  }

  main {
    padding-top: 34px;
  }
}