:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1f2a24;
  --muted: #5c6b62;
  --accent: #2f7d55;
  --accent-text: #ffffff;
  --border: #e3e6e1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121714;
    --surface: #1b221e;
    --text: #e8eee9;
    --muted: #a3b1a8;
    --accent: #5fbf8a;
    --accent-text: #0d1a12;
    --border: #2b352f;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

.top, main, footer { max-width: 960px; margin: 0 auto; padding: 0 16px; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-block: 16px; }
.top nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.top nav a:not(.btn) { color: var(--muted); text-decoration: none; }
.brand { font-weight: 700; font-size: 1.2rem; color: var(--text); text-decoration: none; }

.lang { background: none; border: 1px solid var(--border); color: var(--text); border-radius: 6px; padding: 2px 8px; cursor: pointer; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
}
.btn.small { padding: 6px 14px; }

.hero { text-align: center; padding-block: 64px 40px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.15; margin: 0 0 16px; }
.hero p { color: var(--muted); max-width: 600px; margin: 0 auto 28px; }
.demo {
  display: block;
  margin: 40px auto 0;
  width: min(100%, 320px);
  aspect-ratio: 390 / 844;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: 0 24px 60px rgb(0 0 0 / 0.35);
}

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; padding-block: 40px; }
.features article, .plan { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 20px; }
.features h3 { margin: 0 0 6px; }
.features p { margin: 0; color: var(--muted); }

.pricing { text-align: center; padding-block: 40px 64px; }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; text-align: left; margin-bottom: 20px; }
.plan h3 { margin: 0; }
.plan.pro { border-color: var(--accent); }
.price { font-size: 1.3rem; font-weight: 700; margin: 6px 0 12px; }
.plan ul { padding-left: 20px; margin: 0; }
.honest { color: var(--muted); font-size: 0.95rem; margin-bottom: 24px; }

footer { border-top: 1px solid var(--border); padding-block: 24px; color: var(--muted); font-size: 0.9rem; }