:root {
  --ground: #0B1020;
  --surface: #151C2F;
  --line: rgba(245, 247, 255, 0.08);
  --violet: #8B5CF6;
  --cyan: #55D6FF;
  --text: #F5F7FF;
  --muted: #929BB3;
  --success: #42D392;
  --alert: #FF6B78;
  --radius: 18px;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(139, 92, 246, 0.22), transparent 60%),
    radial-gradient(700px 400px at -10% 20%, rgba(85, 214, 255, 0.10), transparent 60%),
    var(--ground);
  background-attachment: fixed;
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI", Roboto, sans-serif;
}

a { color: var(--cyan); text-underline-offset: 3px; }
a:hover { color: var(--text); }

.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }

header.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 0; gap: 16px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: 0.02em; }
.brand img { width: 40px; height: 40px; border-radius: 10px; }
nav.links { display: flex; gap: 18px; font-size: 15px; }
nav.links a { color: var(--muted); text-decoration: none; }
nav.links a:hover, nav.links a[aria-current="page"] { color: var(--text); }

.hero { padding: 56px 0 40px; text-align: center; }
.hero img.icon { width: 120px; height: 120px; border-radius: 28px; box-shadow: 0 20px 60px rgba(139, 92, 246, 0.35); }
.eyebrow { color: var(--cyan); text-transform: uppercase; letter-spacing: 0.18em; font-size: 13px; font-weight: 600; margin: 28px 0 8px; }
h1 { font-size: clamp(34px, 7vw, 56px); line-height: 1.08; margin: 0 0 16px; letter-spacing: -0.02em; }
.lede { color: var(--muted); font-size: 19px; max-width: 600px; margin: 0 auto 28px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--violet); color: #fff; text-decoration: none;
  padding: 14px 24px; border-radius: 999px; font-weight: 600;
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.4);
}
.btn:hover { color: #fff; filter: brightness(1.1); }
.btn.ghost { background: transparent; border: 1px solid var(--line); box-shadow: none; color: var(--text); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 24px 0 48px; }
.card {
  background: linear-gradient(180deg, rgba(21, 28, 47, 0.9), rgba(21, 28, 47, 0.7));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 22px;
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p, .card ul { margin: 0; color: var(--muted); font-size: 15px; }
.card ul { padding-left: 18px; }
.tag { display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--cyan); margin-bottom: 10px; }

h2 { font-size: 26px; margin: 48px 0 12px; letter-spacing: -0.01em; }

.doc { padding: 24px 0 64px; }
.doc h1 { font-size: clamp(30px, 6vw, 42px); }
.doc h2 { font-size: 22px; margin-top: 40px; padding-top: 8px; border-top: 1px solid var(--line); }
.doc p, .doc li { color: #D6DBEA; }
.doc li { margin-bottom: 6px; }
.doc strong { color: var(--text); }
.meta { color: var(--muted); font-size: 15px; }

details { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; margin: 10px 0; }
details summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: 8px; }
details p { margin: 0 0 8px; }

.contact { text-align: center; padding: 28px; }
.contact .btn { margin-top: 8px; }

footer {
  border-top: 1px solid var(--line); padding: 28px 0 40px; margin-top: 24px;
  color: var(--muted); font-size: 14px;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
footer a { color: var(--muted); }