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

:root {
  --primary: #3D7C47;
  --primary-light: #E8F5E9;
  --accent: #4A9B8E;
  --text: #1A1A1A;
  --text-muted: #6B7280;
  --bg: #F6F8F5;
  --white: #FFFFFF;
  --radius: 16px;
}

body {
  font-family: 'Inter', -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(246, 248, 245, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 100;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.3px;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Hero */
.hero {
  padding: 160px 0 100px;
  text-align: center;
}

.badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(40px, 7vw, 64px);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.1;
  margin-bottom: 20px;
  color: var(--text);
}

.subtitle {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-secondary {
  background: var(--text);
  color: white;
}

/* Features */
.features {
  padding: 80px 0;
}

.features h2,
.community h2 {
  text-align: center;
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Community */
.community {
  padding: 80px 0;
}

.section-subtitle {
  text-align: center;
  font-size: 17px;
  color: var(--text-muted);
  margin-top: -32px;
  margin-bottom: 48px;
}

.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
}

.community-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.community-emoji {
  font-size: 28px;
  flex-shrink: 0;
}

.community-item strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -0.2px;
}

.community-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Footer */
footer {
  padding: 48px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.footer-inner {
  text-align: center;
}

.footer-brand {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-bottom: 16px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--primary);
}

.copyright {
  font-size: 12px;
  color: var(--text-muted);
}

/* Mobile */
@media (max-width: 640px) {
  .nav-links { gap: 20px; }
  .nav-links a { font-size: 13px; }
  .hero { padding: 120px 0 60px; }
  .features, .community { padding: 60px 0; }
  .features h2, .community h2 { font-size: 28px; }
}