:root{--bda-primary:#4f46e5;--bda-primary-dark:#4338ca;--bda-primary-rgb:79,70,229;--bda-ink:#0f172a;--bda-muted:#64748b;--bda-surface:#ffffff;--bda-soft:#f8fafc;--bda-border:#e2e8f0;--bda-radius:14px;--bda-shadow:0 10px 30px rgba(15,23,42,0.06)}html{scroll-behavior:smooth}body{font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--bda-ink);background:var(--bda-soft);-webkit-font-smoothing:antialiased}.display-4,.display-5,.display-6,h1,h2,h3,h4,h5,h6{font-weight:700;letter-spacing:-.02em}.text-muted{color:var(--bda-muted)!important}.btn{border-radius:10px;font-weight:600}.btn-primary{background:var(--bda-primary);border-color:var(--bda-primary)}.btn-primary:focus,.btn-primary:hover{background:var(--bda-primary-dark);border-color:var(--bda-primary-dark)}.btn-outline-primary{color:var(--bda-primary);border-color:rgba(var(--bda-primary-rgb),.5)}.btn-outline-primary:hover{background:var(--bda-primary);border-color:var(--bda-primary)}.bg-gradient-bda{background:linear-gradient(135deg,#eef2ff,#ffffff 55%,#fdf4ff)}.badge-soft{background:rgba(var(--bda-primary-rgb),.1);color:var(--bda-primary);font-weight:600;border-radius:999px;padding:.35rem .8rem}.card{border:1px solid var(--bda-border);border-radius:var(--bda-radius);box-shadow:var(--bda-shadow)}.card:hover{border-color:rgba(var(--bda-primary-rgb),.4)}.card-icon-wrap{width:48px;height:48px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;background:rgba(var(--bda-primary-rgb),.1);color:var(--bda-primary);font-size:1.35rem}.navbar-bda{background:rgba(255,255,255,.85);-webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--bda-border)}.nav-link{font-weight:500;color:var(--bda-muted)!important}.nav-link.active,.nav-link:hover{color:var(--bda-primary)!important}.hero-badge{display:inline-flex;align-items:center;gap:.4rem;background:rgba(var(--bda-primary-rgb),.08);color:var(--bda-primary);border:1px solid rgba(var(--bda-primary-rgb),.2);font-weight:600;font-size:.85rem;padding:.4rem .9rem;border-radius:999px}.chat-scroll{height:380px;overflow-y:auto;display:flex;flex-direction:column;gap:.75rem;padding:1rem}.chat-bubble{max-width:78%;border-radius:16px;padding:.75rem 1rem;font-size:.925rem;line-height:1.5}.chat-bubble.bot{align-self:flex-start;background:var(--bda-soft);border:1px solid var(--bda-border);border-bottom-left-radius:4px;color:var(--bda-ink)}.chat-bubble.user{align-self:flex-end;background:var(--bda-primary);color:#fff;border-bottom-right-radius:4px}.dot-typing span{width:7px;height:7px;border-radius:50%;background:var(--bda-muted);display:inline-block;margin-right:4px;animation:blip 1.2s ease-in-out infinite}.dot-typing span:nth-child(2){animation-delay:.2s}.dot-typing span:nth-child(3){animation-delay:.4s}@keyframes blip{0%,to{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}.status-dot{width:9px;height:9px;border-radius:50%;display:inline-block;margin-right:.4rem}.status-online{background:#22c55e;box-shadow:0 0 0 3px rgba(34,197,94,.18)}.status-offline{background:#94a3b8}.status-connecting{background:#f59e0b;animation:blip 1s infinite}.doc-icon{font-size:1.6rem;color:var(--bda-primary)}.footer-bottom{border-top:1px solid var(--bda-border);background:#fff;color:var(--bda-muted)}.step-number{width:34px;height:34px;border-radius:50%;background:var(--bda-primary);color:#fff;font-weight:700;display:inline-flex;align-items:center;justify-content:center;font-size:.9rem;flex-shrink:0}