:root{--blue:#3e8ecf;--green:#3ecf8e;--ink:#1f2937;--bg:#f7fafc;--line:#e5e7eb;--muted:#5b6472}*{box-sizing:border-box}html,body{margin:0;padding:0}body{color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.fd-wrap{background:radial-gradient(900px 500px at 50% -8%, #3e8ecf21, transparent 60%), radial-gradient(700px 420px at 100% 0%, #3ecf8e1c, transparent 55%), var(--bg);flex-direction:column;align-items:center;min-height:100dvh;padding:28px 20px 22px;display:flex}.fd-header{text-align:center;max-width:640px;margin:22px 0 18px}.fd-badge{letter-spacing:.09em;text-transform:uppercase;color:var(--blue);background:#3e8ecf1a;border:1px solid #3e8ecf40;border-radius:999px;margin-bottom:14px;padding:4px 12px;font-size:12px;display:inline-block}.fd-title{letter-spacing:-.02em;margin:0 0 8px;font-size:clamp(28px,5vw,36px);font-weight:700;line-height:1.1}.fd-tagline{color:var(--muted);margin:0;font-size:16px}.fd-chat{border:1px solid var(--line);background:#fff;border-radius:20px;flex-direction:column;flex:1;width:100%;max-width:560px;max-height:64dvh;display:flex;overflow:hidden;box-shadow:0 24px 60px -34px #1f293766}.fd-log{flex-direction:column;flex:1;gap:12px;padding:20px;display:flex;overflow-y:auto}.fd-row{display:flex}.fd-row.user{justify-content:flex-end}.fd-bubble{white-space:pre-wrap;word-wrap:break-word;border-radius:16px;max-width:80%;padding:11px 14px;font-size:15px;line-height:1.45}.fd-row.bot .fd-bubble{border:1px solid var(--line);background:#f1f5f9;border-bottom-left-radius:5px}.fd-row.user .fd-bubble{background:var(--accent,var(--blue));color:#fff;border-bottom-right-radius:5px}.fd-typing{color:#9aa3b2;letter-spacing:3px}.fd-input{border-top:1px solid var(--line);background:#fff;gap:8px;padding:14px;display:flex}.fd-input input{border:1px solid var(--line);border-radius:12px;outline:none;flex:1;padding:12px 14px;font-size:15px}.fd-input input:focus{border-color:var(--accent,var(--blue));box-shadow:0 0 0 3px #3e8ecf26}.fd-send{color:#fff;background:var(--accent,var(--blue));cursor:pointer;border:none;border-radius:12px;padding:0 18px;font-size:15px;font-weight:600}.fd-send:disabled{opacity:.5;cursor:default}.fd-footer{color:#9aa3b2;margin-top:16px;font-size:12px}.home{text-align:center;background:radial-gradient(900px 500px at 50% 0%, #3e8ecf24, transparent 60%), radial-gradient(700px 420px at 90% 100%, #3ecf8e1f, transparent 55%), var(--bg);flex-direction:column;justify-content:center;align-items:center;min-height:100dvh;padding:48px 22px;display:flex}.home h1{letter-spacing:-.03em;margin:18px 0 12px;font-size:clamp(34px,6vw,52px);font-weight:800}.home-sub{max-width:560px;color:var(--muted);margin:0 0 28px;font-size:17px;line-height:1.55}.home-hint{color:#9aa3b2;text-transform:uppercase;letter-spacing:.08em;margin:0 0 12px;font-size:13px}.home-links{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.home-pill{color:var(--ink);border:1px solid var(--line);background:#fff;border-radius:14px;padding:12px 20px;font-weight:600;text-decoration:none;box-shadow:0 10px 30px -20px #1f293766}.home-pill:hover{border-color:var(--blue);color:var(--blue)}