:root {
  color-scheme: light;
  --bg: #f5f7f2;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --text: #183024;
  --muted: #5e7166;
  --line: rgba(24, 48, 36, 0.12);
  --accent: #2d7d46;
  --accent-strong: #174f29;
  --shadow: 0 24px 64px rgba(17, 36, 27, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(111, 184, 102, 0.22), transparent 30%),
    radial-gradient(circle at top right, rgba(255, 214, 102, 0.18), transparent 28%),
    linear-gradient(180deg, #f7fbf1 0%, #eef3ea 100%);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  line-height: 1.7;
}

a {
  color: var(--accent-strong);
}

img {
  max-width: 100%;
}

.shell {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  padding: 24px 0 0;
}

.site-header .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 30px rgba(17, 36, 27, 0.06);
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.02em;
}

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

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
}

.hero {
  padding: 56px 0 28px;
}

.hero-panel {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 28px;
  padding: 40px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(246, 252, 243, 0.92));
  border: 1px solid rgba(45, 125, 70, 0.12);
  box-shadow: var(--shadow);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(45, 125, 70, 0.1);
  color: var(--accent-strong);
  font-size: 0.85rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0 0 12px;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

.lede {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions,
.inline-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  background: transparent;
  color: var(--accent-strong);
  border-color: rgba(45, 125, 70, 0.22);
}

.hero-card,
.section-card,
.legal-card,
.notice-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  backdrop-filter: blur(10px);
}

.hero-card {
  padding: 24px;
}

.hero-card ul,
.feature-list,
.faq-list,
.contact-list {
  margin: 0;
  padding-left: 20px;
}

.hero-card li,
.feature-list li,
.faq-list li,
.contact-list li {
  margin-bottom: 8px;
}

.section {
  padding: 28px 0;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.section-card {
  padding: 24px;
}

.section-card p,
.notice-card p,
.legal-intro p,
.legal-card p {
  margin: 0 0 12px;
  color: var(--muted);
}

.notice-card,
.legal-card {
  padding: 28px;
}

.legal-main {
  padding: 56px 0;
}

.legal-intro {
  margin-bottom: 20px;
}

.legal-card pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--text);
}

.site-footer {
  padding: 36px 0 56px;
  color: var(--muted);
}

.site-footer .shell {
  padding: 0 4px;
}

@media (max-width: 860px) {
  .site-header .shell,
  .hero-panel,
  .section-grid {
    grid-template-columns: 1fr;
  }

  .site-header .shell {
    border-radius: 28px;
  }

  .hero-panel {
    padding: 28px;
  }
}

@media (max-width: 560px) {
  body {
    line-height: 1.6;
  }

  .site-header {
    padding-top: 16px;
  }

  .site-header .shell,
  .hero-panel,
  .section-card,
  .hero-card,
  .notice-card,
  .legal-card {
    padding: 20px;
  }
}