:root {
  --bg: #f7f5f0;
  --surface: #ffffff;
  --text: #23291f;
  --muted: #5b6357;
  --accent: #2e7d32;
  --border: #e3e0d6;
  --danger: #c62828;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14170f;
    --surface: #1c2016;
    --text: #eef1e8;
    --muted: #a4ac9a;
    --accent: #6fcf73;
    --border: #2c3223;
    --danger: #ef5350;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

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

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.nav-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}

.brand .mark-img {
  border-radius: 8px;
  display: block;
}

.brand .name {
  font-weight: 700;
  font-size: 18px;
}

.nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

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

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

/* Hero */
.hero {
  padding: 56px 20px 40px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 8px;
}

.hero .tagline {
  color: var(--accent);
  font-weight: 600;
  font-size: 1.2rem;
  margin: 0 0 20px;
}

.hero .lede {
  max-width: 640px;
  margin: 0 auto 36px;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-image {
  width: 100%;
  max-width: 960px;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--border);
  display: block;
  margin: 0 auto;
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  padding: 48px 20px 64px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
}

.feature-card h2 {
  margin: 0 0 8px;
  font-size: 1.15rem;
  color: var(--accent);
}

.feature-card p {
  margin: 0;
  color: var(--text);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 20px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 40px 20px;
  text-align: center;
}

.footer-inner .mark-img { border-radius: 8px; }

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
}

.site-footer nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.site-footer nav a:hover { color: var(--accent); }

.copyright {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0;
}

.copyright a { color: var(--muted); }