:root {
  --green-50: #f3f9f4;
  --green-100: #e2f2e5;
  --green-200: #c3e6ca;
  --green-500: #5cae6e;
  --green-600: #479157;
  --green-700: #377444;
  --text-main: #223022;
  --text-sub: #5b6b5c;
  --white: #ffffff;
  --max-width: 880px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "Segoe UI", Roboto, sans-serif;
  color: var(--text-main);
  background: var(--green-50);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--green-700);
}

img {
  max-width: 100%;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

header.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--green-200);
  position: sticky;
  top: 0;
  z-index: 10;
}

header.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--text-main);
}

.brand .logo-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  display: inline-block;
}

nav.main-nav a {
  margin-left: 20px;
  text-decoration: none;
  color: var(--text-sub);
  font-size: 0.95rem;
}

nav.main-nav a:hover {
  color: var(--green-700);
}

main {
  min-height: 60vh;
}

.hero {
  padding: 64px 0 40px;
  text-align: center;
}

.hero h1 {
  font-size: 2rem;
  margin-bottom: 12px;
  color: var(--green-700);
}

.hero p.lead {
  font-size: 1.1rem;
  color: var(--text-sub);
  max-width: 640px;
  margin: 0 auto;
}

.section {
  padding: 32px 0;
}

.card {
  background: var(--white);
  border: 1px solid var(--green-200);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 20px;
}

.card h2 {
  margin-top: 0;
  color: var(--green-700);
  font-size: 1.3rem;
}

.sns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.sns-card {
  background: var(--white);
  border: 1px solid var(--green-200);
  border-radius: 14px;
  padding: 20px;
  text-align: center;
  text-decoration: none;
  color: var(--text-main);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.sns-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(60, 120, 70, 0.12);
}

.sns-card .sns-icon {
  font-size: 1.8rem;
  display: block;
  margin-bottom: 8px;
}

.contact-box {
  background: var(--green-100);
  border-radius: 14px;
  padding: 24px;
  text-align: center;
}

footer.site-footer {
  background: var(--white);
  border-top: 1px solid var(--green-200);
  margin-top: 48px;
}

footer.site-footer .wrap {
  padding: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text-sub);
}

footer.site-footer .footer-links a {
  margin-right: 18px;
  text-decoration: none;
  color: var(--green-700);
  font-weight: 600;
}

footer.site-footer .footer-links a:hover {
  text-decoration: underline;
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--green-200);
  border-radius: 999px;
  overflow: hidden;
  margin: 24px auto 0;
}

.lang-toggle button {
  border: none;
  background: var(--white);
  padding: 8px 18px;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--text-sub);
}

.lang-toggle button.active {
  background: var(--green-500);
  color: var(--white);
}

.lang-block[data-lang="en"] {
  display: none;
}

.lang-block.active-lang {
  display: block !important;
}

.legal-body h2 {
  color: var(--green-700);
  font-size: 1.15rem;
  margin-top: 32px;
}

.legal-body h3 {
  color: var(--green-700);
  font-size: 1rem;
}

.updated {
  color: var(--text-sub);
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  header.site-header .wrap {
    flex-direction: column;
    gap: 10px;
  }
  nav.main-nav a {
    margin: 0 10px;
  }
  .hero {
    padding: 40px 0 24px;
  }
  .hero h1 {
    font-size: 1.5rem;
  }
}