:root {
  --primary: #ff0033;
  --secondary: #d4af37;
  --bg: #080808;
  --panel: #111;
  --text: #fff;
  --muted: rgba(255, 255, 255, 0.72);
  --line: rgba(212, 175, 55, 0.28);
  --font-main: 'Yuji Syuku', serif;
  --font-body: 'Noto Sans JP', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.site-shell {
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 10%, rgba(255, 0, 51, 0.18), transparent 28%),
    linear-gradient(135deg, #070707 0%, #160707 52%, #080808 100%);
}

.site-header,
.site-footer {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.brand {
  color: var(--secondary);
  text-decoration: none;
  font-weight: 900;
  letter-spacing: 0.18em;
}

.site-nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 900;
}

.content-hero,
.content-body {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
}

.content-hero {
  padding: 70px 0 46px;
}

.eyebrow {
  color: var(--secondary);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.22em;
  margin: 0 0 18px;
}

h1,
h2,
.lead {
  font-family: var(--font-main);
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: clamp(2.45rem, 8vw, 5.4rem);
  line-height: 1.18;
}

.lead {
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  line-height: 1.8;
  margin: 28px 0 0;
}

.content-body {
  padding: 16px 0 80px;
}

.content-body section {
  border-top: 1px solid var(--line);
  padding: 34px 0;
}

h2 {
  color: var(--secondary);
  margin: 0 0 16px;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
}

p {
  color: var(--muted);
  margin: 0 0 18px;
}

.book-cta {
  margin: 36px 0 0;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 1rem 1.35rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 900;
}

.btn-primary {
  background: var(--primary);
  border: 1px solid var(--primary);
  color: #fff;
}

.btn-secondary {
  border: 1px solid var(--line);
  color: var(--secondary);
  background: rgba(212, 175, 55, 0.08);
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 22px;
}

.resource-card {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.045);
  padding: 18px;
  text-decoration: none;
  border-radius: 4px;
}

.resource-card strong {
  color: #fff;
  display: block;
  margin-bottom: 8px;
}

.resource-card span {
  color: var(--muted);
  font-size: 0.92rem;
}

.asset-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.asset-list img {
  width: 100%;
  display: block;
  border: 1px solid var(--line);
}

.copy-block {
  white-space: pre-wrap;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.32);
  padding: 18px;
  color: rgba(255, 255, 255, 0.82);
  border-radius: 4px;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.38);
  font-size: 0.78rem;
}

@media (max-width: 760px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .resource-grid,
  .asset-list {
    grid-template-columns: 1fr;
  }
}