:root{--bg:#0a0e1a;--bg-2:#0f1629;--text:#f1f5f9;--muted:#94a3b8;--primary:#3b82f6;--primary-hover:#2563eb;--primary-glow:rgba(59,130,246,.4);--accent:#06b6d4;--accent-2:#10b981;--card:rgba(15,23,42,.8);--card-hover:rgba(30,41,59,.9);--border:rgba(148,163,184,.1);--border-hover:rgba(148,163,184,.2);--shadow:0 25px 50px -12px rgba(0,0,0,.5);--shadow-lg:0 35px 60px -15px rgba(0,0,0,.6);--gradient-primary:linear-gradient(135deg,#3b82f6,#06b6d4 50%,#10b981);--gradient-hero:linear-gradient(135deg,#1e3a5f,#0f1629 50%,#0a1628)}*{box-sizing:border-box}body,html{height:100%}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);background-image:radial-gradient(ellipse 80% 50% at 50% -20%,rgba(59,130,246,.15),transparent),radial-gradient(ellipse 60% 40% at 100% 0,rgba(6,182,212,.1),transparent),radial-gradient(ellipse 50% 30% at 0 100%,rgba(16,185,129,.08),transparent);min-height:100vh}a{color:var(--accent);transition:color .2s ease}a,a:hover{text-decoration:none}a:hover{color:var(--primary)}.header{position:-webkit-sticky;position:sticky;top:0;z-index:100;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);background:rgba(10,14,26,.85);border-bottom:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,.3)}.header-inner{max-width:1280px;margin:0 auto;padding:16px 24px;gap:20px}.brand,.header-inner{display:flex;align-items:center}.brand{font-weight:800;font-size:1.5rem;letter-spacing:-.5px;color:#fff;gap:8px;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.brand:hover{opacity:.9;text-decoration:none}.spacer{flex:1 1}.nav{display:flex;align-items:center;gap:8px}.nav a{color:var(--muted);padding:8px 16px;border-radius:8px;font-weight:500;transition:all .2s ease}.nav a:hover{color:#fff;background:hsla(0,0%,100%,.05);text-decoration:none}.nav-link{color:var(--muted)!important;padding:8px 14px;border-radius:8px;font-weight:500;font-size:14px;transition:all .2s ease;display:inline-flex;align-items:center;gap:6px}.nav-link:hover{color:#fff!important;background:hsla(0,0%,100%,.08);text-decoration:none}.container{max-width:1200px;margin:0 auto;padding:32px 24px}.card{background:var(--card);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:16px;padding:24px;transition:all .3s ease}.card:hover{border-color:var(--border-hover)}.card-elevated{background:linear-gradient(145deg,rgba(30,41,59,.6),rgba(15,23,42,.8));box-shadow:var(--shadow-lg)}h1,h2,h3{margin:0 0 16px;font-weight:700;letter-spacing:-.5px}h1{font-size:2.5rem;line-height:1.2}h2{font-size:1.75rem}.lead{color:var(--muted);font-size:1.1rem;line-height:1.6}.form{max-width:480px}.form-row{margin-bottom:16px}.label{display:block;margin-bottom:8px;color:var(--muted);font-size:14px;font-weight:500}.input{width:100%;padding:12px 16px;border-radius:10px;border:1px solid var(--border);background:rgba(15,23,42,.6);color:var(--text);font-size:15px;transition:all .2s ease}.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.input::placeholder{color:rgba(148,163,184,.5)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:10px;border:0;cursor:pointer;background:var(--gradient-primary);color:#fff;font-weight:600;font-size:15px;box-shadow:0 4px 15px var(--primary-glow);transition:all .3s ease}.btn,.btn:hover{text-decoration:none}.btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px var(--primary-glow)}.btn:active{transform:translateY(0)}.btn:disabled{opacity:.6;cursor:default;transform:none}.btn-muted{background:rgba(148,163,184,.1);color:var(--muted);box-shadow:none;border:1px solid var(--border)}.btn-muted:hover{background:rgba(148,163,184,.15);color:var(--text);box-shadow:none}.btn-sm{padding:8px 16px;font-size:13px}.btn-lg{padding:16px 32px;font-size:17px;border-radius:12px}.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary);box-shadow:none}.btn-outline:hover{background:var(--primary);color:#fff}.error{color:#f87171;font-size:14px}.success{color:#34d399;font-size:14px}.chat-wrap{display:grid;grid-template-rows:1fr auto;grid-gap:16px;gap:16px;height:100%}.chat-box{min-height:350px;max-height:60vh;overflow:auto;padding:16px;border:1px solid var(--border);border-radius:16px;background:rgba(10,14,26,.5);scrollbar-width:thin;scrollbar-color:rgba(148,163,184,.3) transparent}.chat-box::-webkit-scrollbar{width:6px}.chat-box::-webkit-scrollbar-track{background:transparent}.chat-box::-webkit-scrollbar-thumb{background:rgba(148,163,184,.3);border-radius:3px}.msg{display:inline-block;padding:12px 16px;border-radius:16px;margin-bottom:8px;max-width:80%;line-height:1.5;font-size:15px}.msg-user{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border-bottom-right-radius:4px}.msg-assistant{background:linear-gradient(135deg,rgba(16,185,129,.2),rgba(6,182,212,.2));color:var(--text);border:1px solid rgba(16,185,129,.2);border-bottom-left-radius:4px}.msg-meta{font-size:12px;color:var(--muted);margin-bottom:6px;font-weight:500}.input-row{display:flex;gap:12px}.grid-2{display:grid;grid-template-columns:280px 1fr;grid-gap:20px;gap:20px}.hero{text-align:center;padding:60px 20px}.hero-title{font-size:3.5rem;font-weight:800;letter-spacing:-1px;margin-bottom:8px;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-slogan{font-size:1.5rem;color:var(--accent);font-weight:600;margin-bottom:24px;letter-spacing:1px}.hero-description{font-size:1.2rem;color:var(--muted);max-width:600px;margin:0 auto 40px;line-height:1.7}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:24px;gap:24px;margin-top:48px}.feature-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:28px;text-align:left;transition:all .3s ease}.feature-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:0 20px 40px rgba(59,130,246,.15)}.feature-icon{font-size:2.5rem;margin-bottom:16px;display:block}.feature-title{font-size:1.25rem;font-weight:700;margin-bottom:8px;color:var(--text)}.feature-desc{color:var(--muted);font-size:15px;line-height:1.6}.stats-row{display:flex;justify-content:center;gap:48px;margin:40px 0;flex-wrap:wrap}.stat-item{text-align:center}.stat-value{font-size:2.5rem;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stat-label{color:var(--muted);font-size:14px;margin-top:4px}.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:20px;font-size:13px;font-weight:600}.badge-primary{background:rgba(59,130,246,.15);color:var(--primary);border:1px solid rgba(59,130,246,.3)}.badge-success{background:rgba(16,185,129,.15);color:var(--accent-2);border:1px solid rgba(16,185,129,.3)}.divider{height:1px;background:var(--border);margin:32px 0}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeInUp .6s ease-out forwards}@keyframes pulse-glow{0%,to{box-shadow:0 0 20px var(--primary-glow)}50%{box-shadow:0 0 40px var(--primary-glow)}}.glow-pulse{animation:pulse-glow 2s ease-in-out infinite}