:root {
  --bg: #0a0e1a;
  --bg-elev: #131826;
  --text: #e7eaf0;
  --text-dim: #9aa3b7;
  --accent: #22d3ee;
  --accent-2: #fbbf24;
  --border: #20283c;
  --max-w: 960px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Helvetica Neue", "Hiragino Sans", "Yu Gothic UI", system-ui, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

header.site {
  position: sticky;
  top: 0;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
header.site .inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
header.site .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text);
  font-size: 18px;
}
header.site .brand img {
  width: 32px;
  height: 32px;
  border-radius: 7px;
}
header.site nav {
  margin-left: auto;
  display: flex;
  gap: 18px;
  font-size: 14px;
}
header.site nav a {
  color: var(--text-dim);
}
header.site nav a:hover { color: var(--text); text-decoration: none; }

main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.hero {
  text-align: center;
  padding: 80px 0 60px;
}
.hero img.icon {
  width: 120px;
  height: 120px;
  border-radius: 24px;
  margin-bottom: 24px;
  box-shadow: 0 10px 40px rgba(34, 211, 238, 0.2);
}
.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  margin: 0 0 12px;
  line-height: 1.25;
}
.hero p.tagline {
  font-size: clamp(16px, 2.2vw, 20px);
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 32px;
}
.hero .cta {
  display: inline-block;
  padding: 14px 28px;
  background: var(--accent);
  color: #0a0e1a;
  font-weight: 700;
  border-radius: 12px;
  font-size: 16px;
  transition: transform 0.15s;
}
.hero .cta:hover { transform: translateY(-2px); text-decoration: none; }

section {
  padding: 60px 0;
  border-top: 1px solid var(--border);
}
section h2 {
  font-size: 26px;
  margin: 0 0 28px;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.feature {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
}
.feature .ico {
  font-size: 24px;
  margin-bottom: 8px;
}
.feature h3 {
  font-size: 16px;
  margin: 0 0 6px;
}
.feature p {
  font-size: 14px;
  color: var(--text-dim);
  margin: 0;
}

.usecases ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.usecases li {
  padding: 14px 18px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
}

.pricing {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 640px) {
  .pricing { grid-template-columns: 1fr; }
}
.plan {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 26px;
}
.plan h3 { margin: 0 0 4px; font-size: 18px; }
.plan .price { font-size: 28px; font-weight: 700; color: var(--accent); margin: 8px 0; }
.plan .note { font-size: 13px; color: var(--text-dim); }

article.doc h1 { font-size: 28px; margin-top: 60px; }
article.doc h2 { font-size: 22px; margin-top: 36px; border: 0; padding: 0; }
article.doc h3 { font-size: 17px; margin-top: 24px; }
article.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 24px;
}
article.doc th, article.doc td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  font-size: 14px;
}
article.doc th { background: var(--bg-elev); }
article.doc hr { border: 0; border-top: 1px solid var(--border); margin: 48px 0; }

footer.site {
  border-top: 1px solid var(--border);
  margin-top: 60px;
  padding: 30px 24px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
}
footer.site a { color: var(--text-dim); margin: 0 10px; }