:root {
  --bg: #0b1020;
  --bg-2: #121a34;
  --fg: #e8efff;
  --muted: #a9b5d9;
  --accent: #6aa7ff;
  --accent-2: #9d7dff;
  --card: #0f1730;
  --border: #243055;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: radial-gradient(1200px 800px at 20% -10%, #1a244a, transparent 60%), linear-gradient(180deg, var(--bg), var(--bg-2)); color: var(--fg); font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.nav { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 20px; background: rgba(11,16,32,0.6); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.logo { width: 24px; height: 24px; }
.links { display: flex; align-items: center; gap: 16px; }
.links a { color: var(--fg); opacity: .9; }
.btn { padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border); background: transparent; color: var(--fg); cursor: pointer; }
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border: none; color: #0b0f1c; font-weight: 700; }
.btn.ghost { background: transparent; }
.btn:active { transform: translateY(1px); }
.hero { padding: 80px 20px 40px; max-width: 1100px; margin: 0 auto; }
.hero h1 { font-size: clamp(30px, 6vw, 48px); line-height: 1.05; margin: 0 0 14px; }
.hero h1 span { color: var(--fg); opacity: .95; }
.hero h1 em { color: var(--accent); font-style: normal; text-shadow: 0 0 24px rgba(106,167,255,.25); }
.sub { color: var(--muted); max-width: 780px; margin: 8px 0 18px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.meta { color: var(--muted); font-size: 14px; margin-top: 10px; }
.content { padding: 32px 20px; max-width: 1000px; margin: 0 auto; }
.content h2 { margin: 0 0 12px; }
.steps, .bullets { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 16px 20px; color: var(--fg); }
.steps li { margin: 8px 0; }
.bullets li { margin: 8px 0; }
.hidden { display: none; }
.modal { position: fixed; inset: 0; background: rgba(6,10,24,0.6); display: grid; place-items: center; padding: 20px; }
.modal-card { width: min(720px, 100%); background: var(--card); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.45); }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 14px; border-bottom: 1px solid var(--border); background: #0e1630; }
.close { background: transparent; border: none; color: var(--fg); font-size: 24px; padding: 0 6px; cursor: pointer; }
.chatlog { max-height: 48vh; overflow: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.bubble { padding: 10px 12px; border-radius: 12px; max-width: 90%; }
.bubble.bot { background: #0f1e45; border: 1px solid #1f2d58; }
.bubble.user { background: #15254e; border: 1px solid #28407a; margin-left: auto; }
.composer { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); background: #0f1730; }
.composer input { flex: 1; background: #0b132b; border: 1px solid var(--border); border-radius: 10px; padding: 12px; color: var(--fg); }
.micro { margin: 6px 12px 12px; color: var(--muted); font-size: 12px; }