:root {
  --primary: #4a9d6f;
  --primary-dark: #4a7c59;
  --bg: #f5f0eb;
  --surface: #ffffff;
  --text: #1e1e1e;
  --text-muted: #6b6b6b;
  --border: #e5ddd3;
  --error: #b94a48;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(74, 124, 89, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 18px;
  color: var(--text);
}
.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
}
.nav a {
  margin-left: 24px;
  font-size: 15px;
  color: var(--text-muted);
}
.nav a:hover { color: var(--primary-dark); }

/* Hero */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(36px, 5vw, 52px);
  line-height: 1.15;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}
.hero .tagline {
  font-size: 20px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 32px;
}
.hero .badges {
  display: inline-flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-size: 14px;
  box-shadow: var(--shadow);
}
.badge-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
  display: block;
}

/* Features */
.features {
  padding: 60px 0;
}
.features h2 {
  text-align: center;
  font-size: 28px;
  margin: 0 0 40px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.feature-icon {
  font-size: 28px;
  margin-bottom: 10px;
}
.feature h3 {
  margin: 0 0 6px;
  font-size: 17px;
}
.feature p {
  margin: 0;
  font-size: 15px;
  color: var(--text-muted);
}

/* Section */
section.content {
  padding: 40px 0 80px;
}
section.content h1 {
  font-size: 36px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
section.content .updated {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 32px;
}
section.content h2 {
  font-size: 22px;
  margin: 40px 0 12px;
}
section.content h3 {
  font-size: 18px;
  margin: 28px 0 10px;
}
section.content p,
section.content li { font-size: 16px; }
section.content ul { padding-left: 22px; }
section.content hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}
section.content code {
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}
.site-footer a { margin: 0 10px; }