:root{--primary:#007bff;--primary-dk:#0056b3;--accent:#ff4757;--success:#2ed573;--pink:#ff69b4;--purple:#9b59b6;--orange:#ff6348;--bg:#f8f9fa;--surface:#fff;--text:#2d3436;--text-muted:#636e72;--shadow-sm:0 2px 10px rgba(0,0,0,.06);--shadow-md:0 10px 35px rgba(0,0,0,.15);--radius:20px;--border:1px solid #e9ecef}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:inherit}
img{max-width:100%;height:auto}
.skip-link{position:absolute;left:-9999px;top:auto}
.skip-link:focus{left:16px;top:16px;z-index:999;background:#fff;color:#000;padding:10px 14px;border-radius:8px;box-shadow:var(--shadow-sm)}
.container{max-width:1400px;margin:0 auto;padding:0 24px}
.topbar{position:sticky;top:0;z-index:99;background:rgba(15,15,35,.92);backdrop-filter:blur(12px);color:#fff}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding-top:14px;padding-bottom:14px}
.brand{font-weight:900;text-decoration:none;letter-spacing:.02em}
.nav-links{display:flex;flex-wrap:wrap;gap:1rem}
.nav-links a{color:#dbeafe;text-decoration:none;font-weight:600}
.nav-links a:hover{color:#fff}
.hero{background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 25%,var(--pink) 50%,var(--purple) 75%,var(--orange) 100%);color:#fff;padding:clamp(45px,14vw,90px) 20px 70px;text-align:center;position:relative;clip-path:polygon(0 0,100% 0,100% 88%,0 100%)}
.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 10% 90%,rgba(255,255,255,.25) 0,transparent 40%),radial-gradient(circle at 90% 10%,rgba(255,255,255,.2) 0,transparent 40%),radial-gradient(circle at 50% 50%,rgba(255,255,255,.1) 0,transparent 60%);pointer-events:none}
.hero-content{position:relative;z-index:2;max-width:920px;margin:0 auto}
.hero h1{font-size:clamp(2rem,7vw,3.8rem);font-weight:900;margin-bottom:1.25rem;letter-spacing:-.03em;text-shadow:0 4px 20px rgba(0,0,0,.3)}
.hero p{font-size:clamp(1.05rem,4.5vw,1.35rem);margin-bottom:2rem;opacity:.97}
.hero-actions,.cta-row{display:flex;justify-content:center;flex-wrap:wrap;gap:1rem}
.keywords-hero,.features,.detail-sections,.legal-card{background:linear-gradient(135deg,var(--surface) 0%,#fdfdfd 100%);border-radius:var(--radius);box-shadow:var(--shadow-md);border:var(--border)}
.keywords-hero{margin:clamp(-30px,-6vw,-40px) auto 50px;padding:2.5rem 2rem;position:relative;overflow:hidden}
.keywords-hero:after{content:"";position:absolute;top:-50%;right:-20%;width:400px;height:400px;background:radial-gradient(circle,rgba(0,123,255,.05) 0,transparent 70%);pointer-events:none}
.section-title,.keywords-hero h2{text-align:center;font-size:clamp(1.5rem,6vw,2.25rem);margin-bottom:2rem;background:linear-gradient(135deg,var(--primary),var(--accent),var(--pink),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.keywords-grid,.chat-grid,.features-grid,.info-grid{display:grid;gap:1.25rem}
.keywords-grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));position:relative;z-index:2}
.chat-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));margin-bottom:4rem}
.features-grid,.info-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.keyword-tag,.btn-chat,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:.8rem;text-decoration:none;border-radius:50px;font-weight:800;transition:all .35s cubic-bezier(.4,0,.2,1)}
.keyword-tag{padding:1.1rem 1.3rem;color:#fff;font-size:.92rem;text-transform:uppercase;letter-spacing:.08em;box-shadow:0 6px 20px rgba(0,0,0,.15)}
.keyword-tag:hover{transform:translateY(-6px) scale(1.05);box-shadow:0 20px 45px rgba(0,0,0,.25)}
.g1{background:linear-gradient(135deg,#007bff,#9b59b6)}
.g2{background:linear-gradient(135deg,#ff4757,#ff6348)}
.g3{background:linear-gradient(135deg,#ff69b4,#ff4757)}
.g4{background:linear-gradient(135deg,#2ed573,#007bff)}
.chat-card,.detail-card,.feature-item,.info-item,.legal-card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-sm);border:var(--border)}
.chat-card,.detail-card{padding:2.25rem;position:relative;overflow:hidden;border-top:8px solid var(--primary)}
.chat-card:before,.detail-card:before{content:"";position:absolute;inset:0 0 auto 0;height:6px;background:linear-gradient(90deg,var(--primary),var(--accent),var(--pink),var(--purple),var(--orange))}
.chat-card:hover,.detail-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-md)}
.chat-label{font-size:.85rem;font-weight:900;letter-spacing:.2em;text-transform:uppercase;margin-bottom:1rem;display:flex;align-items:center;gap:.75rem}
.chat-card h2,.detail-card h1,.legal-card h1{font-size:clamp(1.35rem,5vw,1.9rem);margin-bottom:1rem;line-height:1.3}
.chat-meta,.detail-meta{color:var(--text-muted);font-size:.95rem;font-weight:600;margin-bottom:1.25rem;display:flex;flex-wrap:wrap;gap:.75rem}
.chat-card p,.detail-card p,.legal-card p{margin-bottom:1.2rem;font-size:1.02rem;line-height:1.75}
.btn-chat,.btn-secondary{padding:1rem 1.6rem;color:#fff;font-size:1rem;border:0;cursor:pointer}
.btn-chat{background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 8px 30px rgba(0,0,0,.18)}
.btn-secondary{background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35)}
.btn-secondary.dark{background:#1f2937;color:#fff;border-color:#1f2937}
.btn-chat:hover,.btn-secondary:hover{transform:translateY(-3px) scale(1.02)}
.features,.detail-sections,.legal-card{padding:3rem 2rem;margin:4rem 0}
.feature-item,.info-item{padding:2rem 1.5rem;background:linear-gradient(135deg,rgba(255,255,255,.9) 0%,var(--bg) 100%);border-radius:var(--radius);border-left:8px solid var(--primary)}
.feature-item strong,.info-item strong,.legal-card h2{display:block;font-size:1.15rem;margin-bottom:.8rem;color:var(--primary-dk)}
.breadcrumbs{margin:2rem 0 1rem;color:var(--text-muted);font-size:.95rem}
.breadcrumbs a{color:var(--primary-dk);text-decoration:none}
.list{padding-left:1.25rem}
.list li+li{margin-top:.65rem}
footer{background:linear-gradient(135deg,#1a1a2e,#16213e,#0f0f23);color:#c0c8d0;text-align:center;padding:4rem 24px 3rem;position:relative}
footer:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,#4a5568,transparent)}
footer a{color:#4dabf7;text-decoration:none;font-weight:600}
@media (min-width:1400px){.chat-grid{grid-template-columns:repeat(4,1fr)}}
@media (min-width:1024px) and (max-width:1399px){.chat-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:768px){.chat-grid,.features-grid,.info-grid{grid-template-columns:1fr}.nav-links{display:none}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}