:root {
  --primary: #3d2e1f;
  --accent: #a67c52;
  --accent-dark: #8b6340;
  --secondary: #6b5b4f;
  --light: #f5ede3;
  --surface: #ffffff;
  --border: #e8ddd0;
  --radius: 16px;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  color: var(--primary);
  background: linear-gradient(180deg, var(--light) 0%, var(--surface) 45%);
  line-height: 1.65;
  min-height: 100vh;
}

a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  max-width: 1040px;
  margin: 0 auto;
}

.logo {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary);
}

.logo-with-icon {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.logo-with-icon:hover { text-decoration: none; }

.logo-icon {
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(61, 46, 31, 0.12);
}

.nav {
  display: flex;
  gap: 20px;
  font-size: 0.875rem;
  font-weight: 600;
}

.nav a { color: var(--secondary); }
.nav a:hover { color: var(--primary); }

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px 24px 64px;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 32px 0 56px;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(1.8rem, 4.5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
}

.lead {
  font-size: 1rem;
  color: var(--secondary);
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 10px 18px;
  background: var(--accent);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 999px;
}

.btn {
  display: inline-block;
  padding: 12px 20px;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 12px;
}

.btn-secondary {
  background: var(--surface);
  color: var(--primary);
  border: 1px solid var(--border);
  box-shadow: 0 4px 14px rgba(61, 46, 31, 0.06);
}

.btn-secondary:hover {
  text-decoration: none;
}

.hero-visual img {
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  display: block;
  border-radius: 28px;
  box-shadow: 0 20px 48px rgba(61, 46, 31, 0.18);
}

.features h2,
.platforms h2,
.legal-links h2 {
  font-size: 1.25rem;
  margin-bottom: 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 8px 24px rgba(61, 46, 31, 0.05);
}

.card-icon { font-size: 1.4rem; display: block; margin-bottom: 10px; }

.card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.card p {
  font-size: 0.875rem;
  color: var(--secondary);
}

.platforms ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
}

.platforms li {
  padding: 8px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
}

.legal-links ul {
  list-style: none;
  margin-bottom: 16px;
}

.legal-links li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.note {
  font-size: 0.8rem;
  color: var(--secondary);
  background: var(--light);
  padding: 14px 16px;
  border-radius: 12px;
}

.legal-page h1 {
  font-size: 1.75rem;
  margin-bottom: 8px;
}

.legal-page .updated {
  font-size: 0.85rem;
  color: var(--secondary);
  margin-bottom: 28px;
}

.legal-page h2 {
  font-size: 1.05rem;
  margin: 28px 0 10px;
}

.legal-page p, .legal-page li {
  color: var(--secondary);
  margin-bottom: 12px;
}

.legal-page ul {
  margin: 0 0 12px 1.2rem;
}

.site-footer {
  text-align: center;
  padding: 32px 24px 48px;
  font-size: 0.8rem;
  color: var(--secondary);
  border-top: 1px solid var(--border);
  margin-top: 24px;
}

@media (max-width: 800px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-actions { justify-content: center; }
  .nav { gap: 12px; font-size: 0.8rem; }
}