:root {
  --bg: #0b0f14;
  --panel: #121821;
  --text: #e8eef7;
  --muted: #9aa8b8;
  --accent: #5b9dff;
  --accent-2: #3dd6c6;
  --line: #243041;
  --ok: #3ecf8e;
  --warn: #f0b429;
  --fail: #ff6b6b;
  --radius: 14px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1a2740 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
}

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

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(11, 15, 20, 0.8);
  z-index: 10;
}
.brand { font-weight: 700; letter-spacing: 0.02em; }
.nav nav { display: flex; gap: 1rem; align-items: center; }
.nav a { color: var(--muted); }
.nav a:hover { color: var(--text); }

main { max-width: 980px; margin: 0 auto; padding: 2rem 1.25rem 4rem; }

.hero { padding: 2.5rem 0 2rem; }
.eyebrow {
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
}
h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  max-width: 16ch;
}
.lede { color: var(--muted); max-width: 54ch; margin: 0 0 1.5rem; }

.scan-form {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 0.55rem;
  border-radius: calc(var(--radius) + 4px);
  max-width: 640px;
}
.scan-form input {
  flex: 1 1 240px;
  background: transparent;
  border: 0;
  color: var(--text);
  font-size: 1rem;
  padding: 0.75rem 0.9rem;
  outline: none;
}
.btn {
  appearance: none;
  border: 0;
  background: linear-gradient(135deg, var(--accent), #7a6bff);
  color: white;
  font-weight: 600;
  padding: 0.8rem 1.15rem;
  border-radius: var(--radius);
  cursor: pointer;
  display: inline-block;
  text-align: center;
}
.btn:hover { filter: brightness(1.06); text-decoration: none; }
.btn-small { padding: 0.45rem 0.8rem; font-size: 0.9rem; }
.btn-block { display: block; width: 100%; }
.fine { color: var(--muted); font-size: 0.9rem; margin-top: 0.75rem; }

.sample {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
}
.sample.ok { border-color: rgba(62, 207, 142, 0.4); }
.sample.warn { border-color: rgba(240, 180, 41, 0.45); }
.hidden { display: none; }

.error {
  margin-top: 1rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 107, 107, 0.5);
  background: rgba(255, 107, 107, 0.08);
  color: #ff9d9d;
  font-size: 0.95rem;
}
.error.hidden { display: none; }

.example { margin-top: 3rem; }
.example a.btn { margin-top: 0.5rem; }

.how, .pricing { margin-top: 3rem; }
h2 { font-size: 1.4rem; margin-bottom: 1rem; }
.steps {
  padding-left: 1.2rem;
  color: var(--muted);
}
.steps li { margin-bottom: 0.6rem; }
.steps strong { color: var(--text); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
}
.card.featured { border-color: rgba(91, 157, 255, 0.55); box-shadow: 0 0 0 1px rgba(91,157,255,0.15); }
.price { font-size: 2rem; font-weight: 700; margin: 0.3rem 0 0.8rem; }
.price span { font-size: 0.95rem; color: var(--muted); font-weight: 500; }
.card ul { margin: 0 0 1rem; padding-left: 1.1rem; color: var(--muted); }

footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
}
.muted { opacity: 0.8; }
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}

@media (max-width: 600px) {
  .nav nav a:not(.btn) { display: none; }
  h1 { max-width: none; }
}