:root {
  --bg: #071018;
  --bg2: #0c1824;
  --text: #f2f6fb;
  --muted: #9db0c5;
  --accent: #4aa3ff;
  --card: rgba(255,255,255,.04);
  --border: rgba(255,255,255,.08);
  --font: "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(900px 500px at 10% -10%, #1a3a5c 0%, transparent 60%),
    radial-gradient(700px 400px at 90% 0%, #12304a 0%, transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
.wrap { width: min(1080px, 92vw); margin: 0 auto; }
.nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.25rem 0;
}
.logo { font-weight: 800; font-size: 1.35rem; letter-spacing: .04em; }
.nav-links { display: flex; gap: 1rem; align-items: center; color: var(--muted); }
.btn {
  display: inline-block;
  background: var(--accent);
  color: #041018;
  font-weight: 700;
  border: 0;
  border-radius: 999px;
  padding: .7rem 1.2rem;
  cursor: pointer;
}
.btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin: 0 0 .75rem;
  letter-spacing: -.02em;
}
.hero p { color: var(--muted); font-size: 1.1rem; max-width: 36rem; margin: 0 auto 1.5rem; }
.cta { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  padding: 2rem 0 3rem;
}
.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem;
}
.feature h3 { margin: 0 0 .4rem; }
.feature p { margin: 0; color: var(--muted); font-size: .95rem; }
.pricing { padding: 2rem 0 4rem; }
.pricing h2 { text-align: center; margin-bottom: .5rem; }
.toggle {
  display: flex; justify-content: center; gap: .5rem; margin: 1rem 0 1.5rem;
}
.toggle button {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 999px;
  padding: .45rem 1rem;
  cursor: pointer;
}
.toggle button.on { color: var(--text); border-color: var(--accent); }
.plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.plan {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.5rem;
}
.plan .price { font-size: 2rem; font-weight: 800; margin: .5rem 0; }
.plan ul { padding-left: 1.1rem; color: var(--muted); }
.auth-box {
  width: min(420px, 92vw);
  margin: 3rem auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.5rem;
}
.auth-box h1 { margin-top: 0; font-size: 1.4rem; }
label { display: block; margin: .7rem 0 .25rem; color: var(--muted); font-size: .85rem; }
input {
  width: 100%;
  background: #071018;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: .65rem .75rem;
}
.msg { margin: .75rem 0; color: var(--accent); }
.err { color: #ff8d98; }
footer { padding: 2rem 0; color: var(--muted); text-align: center; font-size: .9rem; }