:root {
  --bg: #fff;
  --bg-soft: #f5f6f5;
  --bg-card: #ffffff;
  --fg: #111;
  --muted: #5f655f;
  --border: #e4e7e4;
  --accent: #2e7d32; /* brand green (matches the app) */
  --accent-fg: #fff;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

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

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 0.75rem;
}

/* ---- Top nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid var(--border);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 1rem;
}
.nav-links { display: flex; align-items: center; gap: 1.5rem; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.nav-links a:hover { color: var(--fg); }
.nav-logo { display: inline-flex; align-items: center; }
.nav-logo img { height: 52px; width: auto; display: block; }
.btn {
  display: inline-block;
  padding: 0.65rem 1.3rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
}
.btn.ghost { background: transparent; color: var(--fg); border: 1px solid var(--border); }
.btn:hover { filter: brightness(1.06); }
.nav .btn { color: #fff; }
@media (max-width: 640px) {
  .nav-links .nav-only-desktop { display: none; }
  .nav-logo img { height: 42px; }
}

/* ---- Hero ---- */
.hero {
  text-align: center;
  padding: 5.5rem 0 4rem;
  background: var(--bg);
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 auto 1.1rem;
  max-width: 16ch;
}
.hero .lede { color: var(--muted); font-size: 1.15rem; max-width: 46ch; margin: 0 auto 2rem; }
.hero-cta { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

/* ---- Section scaffolding ---- */
section { padding: 4.5rem 0; }
.section-soft { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { text-align: center; max-width: 40ch; margin: 0 auto 3rem; }
.section-head h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); letter-spacing: -0.02em; margin: 0 0 0.75rem; }
.section-head p { color: var(--muted); margin: 0; }

/* ---- Feature grid ---- */
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.6rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
.card .ico { font-size: 1.5rem; margin-bottom: 0.6rem; }
.card h3 { margin: 0 0 0.4rem; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* ---- How it works ---- */
.steps { display: grid; gap: 1.5rem; grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 460px) { .steps { grid-template-columns: 1fr; } }
.step { text-align: left; }
.step .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.step h3 { margin: 0 0 0.35rem; font-size: 1.05rem; }
.step p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* ---- Download / QR ---- */
.download { display: flex; gap: 2.5rem; align-items: center; justify-content: center; flex-wrap: wrap; }
.download .copy { max-width: 34ch; }
.download h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); letter-spacing: -0.02em; margin: 0 0 0.75rem; }
.download p { color: var(--muted); margin: 0 0 1.5rem; }
.qr {
  padding: 0.85rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 200px;
  height: 200px;
  flex: none;
}
.qr img { width: 100%; height: 100%; display: block; }
.qr-caption { color: var(--muted); font-size: 0.85rem; margin: 0.6rem 0 0; text-align: center; }

/* ---- Social ---- */
.social { text-align: center; }
.social h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin: 0 0 0.5rem; letter-spacing: -0.02em; }
.social p { color: var(--muted); margin: 0 0 1.75rem; }
.social-links { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-card);
  text-decoration: none;
  color: var(--fg);
  font-weight: 600;
}
.social-link:hover { border-color: var(--accent); color: var(--accent); }
.social-link svg { width: 22px; height: 22px; fill: currentColor; }
.handle { color: var(--muted); margin-top: 1.25rem; font-size: 0.95rem; }
.handle strong { color: var(--fg); }

/* ---- Document pages (privacy / support) ---- */
.doc {
  max-width: 46rem;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}
.doc .back { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.doc h1 { font-size: 2rem; margin: 1.5rem 0 0.25rem; letter-spacing: -0.02em; }
.doc .subtitle { color: var(--muted); margin: 0; }
.doc .updated { color: var(--muted); font-size: 0.85rem; margin: 0.25rem 0 2.5rem; }
.doc h2 { font-size: 1.25rem; margin: 2.5rem 0 0.5rem; }
.doc h3 { font-size: 1rem; margin: 1.5rem 0 0.25rem; color: #333; }
.doc p { color: #333; }
.doc ul { color: #333; padding-left: 1.25rem; }
.doc li { margin: 0.25rem 0; }
.doc a { color: var(--accent); }

/* ---- Shared footer ---- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 2.5rem 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer .foot-brand { font-weight: 800; color: var(--fg); display: block; margin-bottom: 0.75rem; }
.site-footer a { color: var(--muted); margin: 0 0.6rem; text-decoration: none; }
.site-footer a:hover { color: var(--fg); }
.site-footer .copyright { display: block; margin-top: 1rem; color: #999; }