:root {
  --bg: #0f1117;
  --surface: #181b24;
  --text: #e8eaf0;
  --muted: #9aa0b0;
  --accent: #5b7cfa;
  --accent2: #8b5cf6;
  --ok: #34d399;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  background: rgba(255,255,255,0.08);
  padding: 0.1em 0.4em;
  border-radius: 5px;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 0.92em;
}

.hero {
  background: linear-gradient(160deg, #1a2150 0%, #2a1a4a 60%, #0f1117 100%);
  padding: 0 24px 90px;
}
.hero.compact { padding-bottom: 50px; }

nav {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
}
.logo { font-weight: 700; font-size: 1.15rem; color: var(--text); }
.nav-links a { margin-left: 22px; color: var(--muted); }

.hero-content { max-width: 760px; margin: 60px auto 0; text-align: center; }
h1 { font-size: 2.9rem; line-height: 1.15; letter-spacing: -0.02em; }
.lead { font-size: 1.25rem; color: var(--muted); margin-top: 20px; }
.cta { margin-top: 34px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 12px;
  font-weight: 600;
}
.btn.primary { background: linear-gradient(120deg, var(--accent), var(--accent2)); color: #fff; }
.btn.primary:hover { text-decoration: none; opacity: 0.92; }
.btn.ghost { border: 1px solid rgba(255,255,255,0.2); color: var(--text); }
.btn.ghost:hover { text-decoration: none; background: rgba(255,255,255,0.06); }
.sub { margin-top: 20px; color: var(--muted); font-size: 0.9rem; }

section { max-width: 1040px; margin: 0 auto; padding: 80px 24px; }
h2 { font-size: 2rem; text-align: center; letter-spacing: -0.01em; }

.grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.card {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 16px;
  padding: 26px;
}
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p { color: var(--muted); }

.demo { text-align: center; }
.demo-box {
  margin: 40px auto 0;
  max-width: 460px;
  background: var(--surface);
  border-radius: 16px;
  padding: 30px;
  font-family: "SF Mono", Menlo, monospace;
  font-size: 1.3rem;
  text-align: left;
}
.demo-box .line { padding: 10px 0; }
.typed { color: var(--muted); }
.arrow { color: var(--accent); margin: 0 12px; }
.fixed { color: var(--ok); font-weight: 600; }
.muted { color: var(--muted); margin-top: 22px; }

.prose { max-width: 760px; }
.prose h2 { text-align: left; margin-top: 40px; margin-bottom: 14px; font-size: 1.5rem; }
.prose ul { margin: 0 0 10px 22px; color: var(--muted); }
.prose li { margin: 8px 0; }
.promises li strong { color: var(--text); }

footer {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 30px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  h1 { font-size: 2.1rem; }
  .nav-links a { margin-left: 14px; font-size: 0.9rem; }
}