:root{--bg:#0b1220;--card:#121a2d;--muted:#8aa0c6;--text:#eaf0ff;--accent:#4f8cff;--accent2:#22c55e;--border:rgba(255,255,255,.10)}
*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;color:var(--text);background:radial-gradient(1200px 800px at 20% -10%, rgba(79,140,255,.35), transparent 60%),radial-gradient(900px 600px at 110% 10%, rgba(34,197,94,.22), transparent 55%),linear-gradient(180deg,var(--bg),#070b14)}
a{color:inherit;text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:28px 18px}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.4px}
.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);background:rgba(255,255,255,.04);padding:6px 10px;border-radius:999px;font-size:12px;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:12px 14px;font-weight:700;border:1px solid var(--border);background:rgba(255,255,255,.06)}
.btn.primary{background:linear-gradient(135deg,var(--accent),#7aa6ff);border-color:rgba(79,140,255,.55);color:#081022}
.btn.secondary{background:rgba(255,255,255,.06)}
.btn:active{transform:translateY(1px)}
.hero{padding:44px 0 18px;display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:start}
@media (max-width:900px){.hero{grid-template-columns:1fr;}}
.h1{font-size:44px;line-height:1.05;margin:14px 0 12px;font-weight:900;letter-spacing:-.8px}
.sub{color:var(--muted);font-size:16px;line-height:1.55;max-width:60ch}
.card{border:1px solid var(--border);background:rgba(18,26,45,.72);backdrop-filter:blur(8px);border-radius:18px;padding:16px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
@media (max-width:900px){.grid{grid-template-columns:1fr;}}
.k{font-weight:800;margin:0 0 6px}
.p{color:var(--muted);margin:0;line-height:1.45;font-size:14px}
.footer{color:rgba(138,160,198,.8);font-size:12px;border-top:1px solid var(--border);margin-top:30px;padding-top:16px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.small{font-size:12px;color:var(--muted)}
.input{width:100%;padding:12px 12px;border-radius:12px;border:1px solid var(--border);background:rgba(255,255,255,.04);color:var(--text);outline:none}
.label{font-size:12px;color:var(--muted);margin:10px 0 6px;display:block}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:700px){.row{grid-template-columns:1fr;}}
.notice{border-left:4px solid var(--accent2);padding:10px 12px;background:rgba(34,197,94,.10);border-radius:12px;color:#d8ffe7;font-size:13px;line-height:1.45}
.chatwrap{display:grid;grid-template-columns:1fr;gap:10px}
.bubble{max-width:92%;padding:10px 12px;border-radius:14px;border:1px solid var(--border);background:rgba(255,255,255,.04);color:var(--text);font-size:14px;line-height:1.4}
.bubble.me{margin-left:auto;background:rgba(79,140,255,.16);border-color:rgba(79,140,255,.28)}
.bubble.air{margin-right:auto;background:rgba(255,255,255,.05)}
.stepbar{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 0}
.pill{font-size:12px;padding:6px 10px;border-radius:999px;border:1px solid var(--border);background:rgba(255,255,255,.04);color:var(--muted)}
.pill.on{background:rgba(79,140,255,.16);color:#d9e6ff;border-color:rgba(79,140,255,.28)}