:root{--ink:#111;--muted:#555;--ai:#c2410c;--llm:#2563eb;--line:#e7e5e4;--bg:#fff;--soft:#fafaf9}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Segoe UI",Roboto,"DejaVu Sans",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}
.wrap{max-width:980px;margin:0 auto;padding:0 24px}
header{display:flex;align-items:center;justify-content:space-between;padding:22px 0}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.word{font-family:"DejaVu Sans Mono",Menlo,monospace;font-weight:700;font-size:26px;letter-spacing:.5px}
.ai{color:var(--ai)}.llm{color:var(--llm)}
nav a{color:var(--muted);text-decoration:none;margin-left:22px;font-size:15px}
.hero{padding:72px 0 56px;border-bottom:1px solid var(--line)}
h1{font-size:52px;line-height:1.08;margin:0 0 18px;letter-spacing:-.5px;max-width:720px}
.lead{font-size:20px;color:var(--muted);max-width:620px;margin:0 0 32px}
.addr{display:inline-flex;align-items:center;gap:14px;flex-wrap:wrap}
.btn{background:var(--ink);color:#fff;padding:14px 22px;border-radius:10px;text-decoration:none;font-weight:600;border:0;cursor:pointer;font-size:16px;font-family:inherit}
.btn:disabled{opacity:.6;cursor:default}
.mono{font-family:"DejaVu Sans Mono",Menlo,monospace;font-size:17px;padding:13px 16px;border:1px solid var(--line);border-radius:10px;background:var(--soft)}
section{padding:56px 0;border-bottom:1px solid var(--line)}
h2{font-size:28px;margin:0 0 26px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--soft)}
.n{font-family:"DejaVu Sans Mono",monospace;font-weight:700;color:var(--ai)}
.step h3{margin:8px 0 6px;font-size:18px}.step p{margin:0;color:var(--muted);font-size:15px}
.thread{border:1px solid var(--line);border-radius:14px;overflow:hidden;max-width:680px}
.msg{padding:18px 22px;border-top:1px solid var(--line)}.msg:first-child{border-top:0}
.meta{font-size:13px;color:var(--muted);margin-bottom:6px}.from-bot{background:#f8fafc}
.note{color:var(--muted);font-size:15px;max-width:640px}
.note-spaced{margin-top:14px}
.word-sm{font-size:16px}
.waitlist{margin-top:28px;max-width:560px}
.waitlist-form{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-start}
.waitlist-form input[type="email"]{flex:1;min-width:220px;padding:13px 16px;border:1px solid var(--line);border-radius:10px;font-size:16px;font-family:inherit;background:#fff}
.waitlist-form input[type="email"]:focus{outline:2px solid var(--llm);outline-offset:1px}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
#waitlist-msg{margin:12px 0 0;font-size:15px;min-height:1.4em}
#waitlist-msg.ok{color:#166534}
#waitlist-msg.err{color:#b91c1c}
footer{padding:28px 0;color:var(--muted);font-size:14px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
@media (max-width:700px){
  h1{font-size:36px}
  .steps{grid-template-columns:1fr}
  nav{display:none}
  .hero{padding:44px 0 40px}
  .waitlist-form{flex-direction:column}
  .waitlist-form input[type="email"],.waitlist-form .btn{width:100%}
}