:root{--bg:#08080b;--bg-elevated:#0f0f13;--card:#131318;--card-hover:#17171d;--border:#232329;--border-hover:#34343d;--text:#f4f4f5;--text-muted:#9b9ba5;--text-faint:#616169;--accent-1:#6366f1;--accent-2:#a855f7;--accent-grad:linear-gradient(135deg, var(--accent-1), var(--accent-2));--success:#34d399;--danger:#f87171;--radius:14px;--radius-sm:10px;--max-width:1100px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,Roboto,sans-serif}a{color:inherit}.bg-glow{position:relative;overflow:hidden}.bg-glow:before{content:"";pointer-events:none;z-index:0;background:radial-gradient(circle,#6366f129 0%,#a855f714 40%,#0000 70%);width:900px;height:900px;position:absolute;top:-20%;left:50%;transform:translate(-50%)}.container{max-width:var(--max-width);z-index:1;margin:0 auto;padding:0 1.5rem;position:relative}.nav{z-index:50;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);background:#08080bbf;position:sticky;top:0}.nav-inner{max-width:var(--max-width);justify-content:space-between;align-items:center;margin:0 auto;padding:1rem 1.5rem;display:flex}.nav-logo{letter-spacing:-.02em;align-items:center;gap:8px;font-size:1.05rem;font-weight:800;text-decoration:none;display:flex}.nav-logo-dot{background:var(--accent-grad);width:8px;height:8px;box-shadow:0 0 12px var(--accent-1);border-radius:50%}.nav-links{color:var(--text-muted);gap:1.75rem;font-size:.9rem;display:flex}.nav-links a{text-decoration:none;transition:color .15s}.nav-links a:hover{color:var(--text)}.badge{color:#c4b5fd;letter-spacing:.02em;background:#6366f11a;border:1px solid #6366f14d;border-radius:999px;align-items:center;gap:6px;padding:6px 14px;font-size:.78rem;font-weight:600;display:inline-flex}.hero{text-align:center;max-width:760px;margin:0 auto;padding:6rem 1.5rem 3.5rem}.hero h1{letter-spacing:-.03em;margin:1.1rem 0 .9rem;font-size:clamp(2.4rem,5vw,3.4rem);font-weight:800;line-height:1.08}.hero .gradient-text{background:var(--accent-grad);color:#0000;-webkit-background-clip:text;background-clip:text}.hero p{color:var(--text-muted);max-width:560px;margin:0 auto;font-size:1.1rem;line-height:1.65}.section{max-width:var(--max-width);margin:0 auto;padding:3.5rem 1.5rem}.section-head{text-align:center;margin-bottom:2.25rem}.section-head h2{letter-spacing:-.02em;margin:0 0 .5rem;font-size:1.7rem;font-weight:700}.section-head p{color:var(--text-muted);max-width:480px;margin:0 auto;line-height:1.55}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.6rem;transition:border-color .2s,transform .2s,background .2s}.card-link{color:inherit;height:100%;text-decoration:none;display:block}.card-link .card:hover,.card.interactive:hover{border-color:var(--border-hover);background:var(--card-hover);transform:translateY(-3px)}.card-icon{background:#6366f11f;border:1px solid #6366f140;border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;margin-bottom:.9rem;font-size:1.1rem;display:flex}.card h3{align-items:center;gap:6px;margin:0 0 .45rem;font-size:1.02rem;font-weight:650;display:flex}.card p{color:var(--text-muted);margin:0;font-size:.89rem;line-height:1.55}.card .arrow{color:var(--accent-1);transition:transform .2s;display:inline-block}.card-link:hover .arrow{transform:translate(3px)}.grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1.1rem;display:grid}.input,select.input{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text);outline:none;padding:12px 14px;font-family:inherit;font-size:14px;transition:border-color .15s,box-shadow .15s}.input:focus{border-color:var(--accent-1);box-shadow:0 0 0 3px #6366f126}.input::placeholder{color:var(--text-faint)}.btn{border-radius:var(--radius-sm);cursor:pointer;border:none;justify-content:center;align-items:center;gap:8px;padding:12px 22px;font-family:inherit;font-size:14.5px;font-weight:650;transition:transform .15s,box-shadow .15s,opacity .15s;display:inline-flex}.btn-primary{background:var(--accent-grad);color:#fff;box-shadow:0 4px 20px #6366f140}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 26px #6366f166}.btn-primary:disabled{opacity:.6;cursor:default}.btn-secondary{background:var(--bg-elevated);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--border-hover)}.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);width:100%;overflow:hidden}.demo-wrap{flex-direction:column;align-items:center;max-width:560px;margin:0 auto;display:flex}.result-box{border-radius:var(--radius-sm);width:100%;margin-top:.9rem;padding:1.1rem 1.2rem;font-size:13.5px;line-height:1.6}.result-success{background:#34d3990f;border:1px solid #34d3994d}.result-error{color:var(--danger);background:#f871710f;border:1px solid #f871714d}.mono{word-break:break-all;color:var(--text-muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.steps{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1.5rem;margin:2rem 0;display:grid}.step-num{background:var(--accent-grad);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:30px;height:30px;margin-bottom:.7rem;font-size:13px;font-weight:700;display:flex}.footer{border-top:1px solid var(--border);text-align:center;color:var(--text-faint);padding:2.5rem 1.5rem;font-size:.85rem}.bubble{white-space:pre-wrap;border-radius:12px;max-width:85%;padding:9px 13px;font-size:14px;line-height:1.45}.bubble-user{background:var(--accent-grad);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.bubble-assistant{background:var(--bg-elevated);border:1px solid var(--border);border-bottom-left-radius:4px;align-self:flex-start}@media (max-width:640px){.nav-links{display:none}.hero{padding:4rem 1.25rem 2.5rem}.section{padding:2.5rem 1.25rem}}