:root{--background:#0b0d12;--foreground:#f5f7ff;--muted:#a2acc2;--card:#141a2b;--border:#27304a;--accent:#8b96ff;--accent-strong:#aeb6ff;--error:#ff6b6b}*{box-sizing:border-box;margin:0;padding:0}html,body{min-height:100%}body{color:var(--foreground);background:radial-gradient(circle at top, #182040, var(--background));font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}.page{flex-direction:column;gap:32px;width:min(1100px,100%);margin:0 auto;padding:40px 24px 64px;display:flex}.nav{justify-content:space-between;align-items:center;gap:24px;display:flex}.brand{letter-spacing:.02em;font-size:18px;font-weight:700}.nav-links{color:var(--muted);gap:16px;font-size:14px;display:flex}.nav-links a:hover{color:var(--foreground)}.hero{flex-direction:column;gap:16px;display:flex}.eyebrow{text-transform:uppercase;letter-spacing:.2em;color:var(--accent-strong);font-size:12px}.subhead{max-width:720px;color:var(--muted)}.actions{flex-wrap:wrap;gap:12px;display:flex}.button{border:1px solid var(--border);border-radius:999px;justify-content:center;align-items:center;padding:12px 20px;font-weight:600;transition:transform .2s,box-shadow .2s;display:inline-flex}.button:hover{transform:translateY(-1px);box-shadow:0 12px 24px #0003}.button.primary{background:var(--accent);color:#0b0d12;border-color:#0000}.button.primary:disabled{opacity:.6;cursor:not-allowed;box-shadow:none;transform:none}.button.secondary{color:var(--foreground);background:0 0}.cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;display:grid}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;flex-direction:column;gap:10px;padding:20px;display:flex}.card h3{font-size:18px}.text-link{color:var(--accent-strong);font-weight:600}.text-link:hover{color:var(--foreground)}.muted{color:var(--muted)}.chat-shell{flex-direction:column;gap:24px;display:flex}.chat-window{border:1px solid var(--border);background:var(--card);border-radius:18px;flex-direction:column;gap:14px;min-height:300px;padding:20px;display:flex}.message{white-space:pre-wrap;border-radius:14px;flex-direction:column;gap:6px;max-width:80%;padding:12px 14px;display:flex}.message.user{background:#1d2440;align-self:flex-end}.message.assistant{border:1px solid var(--border);background:#101527;align-self:flex-start}.message-role{letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-size:11px}.loading{color:var(--accent-strong);font-size:14px}.empty-state{color:var(--muted);flex-direction:column;gap:8px;display:flex}.chat-form{border:1px solid var(--border);background:#141a2b99;border-radius:18px;flex-direction:column;gap:16px;padding:20px;display:flex}.field-group{flex-direction:column;gap:8px;font-size:14px;display:flex}.input,.textarea{border:1px solid var(--border);width:100%;color:var(--foreground);background:#0c1020;border-radius:10px;padding:10px 12px;font-size:14px}.textarea{resize:vertical;min-height:120px}.checkbox{color:var(--muted);align-items:center;gap:8px;font-size:14px;display:flex}.checkbox input{accent-color:var(--accent)}.error{color:var(--error);font-size:14px}@media (max-width:720px){.nav{flex-direction:column;align-items:flex-start}.message{max-width:100%}}