*{margin:0;padding:0;box-sizing:border-box}
:root{--primary-dark:#0a0a0a;--primary-light:#fff;--accent-orange:#ff6b35;--accent-gold:#ffd700;--accent-teal:#00b4d8;--accent-purple:#7209b7;--accent-green:#06ffa5;--text-gray:#666;--bg-light:#f8f8f8;--border-light:#e0e0e0}
html{scroll-behavior:smooth}
body{background:#fff;color:var(--primary-dark);line-height:1.8}
.ai-page nav{position:fixed;top:0;width:100%;background:rgba(10,10,10,.95);backdrop-filter:blur(10px);z-index:1000;padding:15px 30px}
.ai-page nav .logo,.ai-page nav .nav-links a{color:#fff}
.hero{margin-top:60px;height:400px;background:linear-gradient(135deg,var(--accent-purple),var(--accent-green));display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,.1) 1px,transparent 1px);background-size:50px 50px;animation:move 20s linear infinite}
@keyframes move{0%{transform:translate(0,0)}100%{transform:translate(50px,50px)}}
.hero-content{text-align:center;color:#fff;position:relative;z-index:1}
.hero-title{font-size:3rem;font-weight:300;letter-spacing:.1em;margin-bottom:15px}
.hero-subtitle{font-size:1.2rem;opacity:.9}
.main-container{max-width:1400px;margin:0 auto;display:flex;gap:50px;padding:50px 30px}
.toc-sidebar{width:280px;position:sticky;top:100px;height:fit-content;max-height:calc(100vh - 120px);overflow-y:auto}
.toc-container{background:var(--bg-light);border-radius:12px;padding:25px}
.toc-title{font-size:1.1rem;font-weight:600;margin-bottom:20px;color:var(--accent-purple);display:flex;align-items:center;gap:8px}
.toc-title::before{content:'🔗'}
.toc-list{list-style:none}
.toc-item{margin-bottom:3px;position:relative;transition:all .3s ease}
.toc-item.level-2{padding-left:20px}
.toc-item.level-3{padding-left:40px}
.toc-link{display:block;padding:8px 12px;color:var(--text-gray);text-decoration:none;font-size:.95rem;border-radius:6px;transition:all .3s ease;position:relative}
.toc-link:hover{background:#fff;color:var(--accent-purple);transform:translateX(5px)}
.toc-link.active{background:#fff;color:var(--accent-purple);font-weight:500;box-shadow:0 2px 8px rgba(114,9,183,.2)}
.toc-link.active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:70%;background:var(--accent-purple);border-radius:2px}
.toc-progress{margin-top:20px;padding-top:20px;border-top:1px solid var(--border-light)}
.progress-label{font-size:.85rem;color:var(--text-gray);margin-bottom:8px}
.progress-bar{height:4px;background:var(--border-light);border-radius:2px;overflow:hidden}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-purple),var(--accent-green));width:0%;transition:width .3s ease}
.content{flex:1;max-width:800px}
.content h1{font-size:2.5rem;font-weight:300;margin-bottom:30px;padding-bottom:20px;border-bottom:2px solid var(--border-light)}
.content h2{font-size:2rem;font-weight:400;margin:50px 0 25px;padding-bottom:10px;border-bottom:1px solid var(--border-light);position:relative}
.content h2::before{content:"";position:absolute;bottom:-1px;left:0;width:60px;height:2px;background:var(--accent-purple)}
.content h3{font-size:1.5rem;font-weight:500;margin:35px 0 20px;color:var(--accent-purple)}
.content p{margin-bottom:20px;color:#333}
.content ul,.content ol{margin:20px 0;padding-left:30px}
.content li{margin-bottom:10px}
.content blockquote{margin:30px 0;padding:20px 25px;background:var(--bg-light);border-left:4px solid var(--accent-purple);font-style:italic}
.content code{background:var(--bg-light);padding:2px 6px;border-radius:3px;font-family:'Courier New',monospace}
.content pre{background:var(--primary-dark);color:#fff;padding:20px;border-radius:8px;overflow-x:auto;margin:25px 0}
.content img{max-width:100%;height:auto;border-radius:8px;margin:20px 0}
.highlight-box{background:linear-gradient(135deg,rgba(114,9,183,.1),rgba(6,255,165,.1));border-radius:12px;padding:25px;margin:30px 0;border:1px solid rgba(114,9,183,.2)}
.highlight-box h4{color:var(--accent-purple);margin-bottom:15px}
.pipeline-box{background:var(--primary-dark);color:#fff;border-radius:12px;padding:25px;margin:30px 0}
.pipeline-box h4{color:var(--accent-green);margin-bottom:15px}
.pipeline-flow{display:flex;align-items:center;gap:10px;margin:15px 0;padding:15px;background:rgba(255,255,255,.05);border-radius:8px;overflow-x:auto;white-space:nowrap}
.pipeline-flow span{color:var(--accent-green);font-weight:700}
.right-sidebar{width:250px}
.sidebar-widget{background:var(--bg-light);border-radius:12px;padding:20px;margin-bottom:25px}
.sidebar-widget h4{font-size:1.1rem;margin-bottom:15px;color:var(--accent-purple)}
.sidebar-widget ul{list-style:none}
.sidebar-widget li{margin-bottom:10px}
.sidebar-widget a{color:var(--text-gray);text-decoration:none;font-size:.95rem;transition:color .3s}
.sidebar-widget a:hover{color:var(--accent-purple)}
.ai-point{background:#fff;border:1px solid var(--border-light);border-radius:8px;padding:15px;margin:15px 0}
.ai-point-number{color:var(--accent-purple);font-weight:700;font-size:1.2rem;margin-bottom:5px}
.ai-point-title{font-weight:600;margin-bottom:5px}
.back-to-top{position:fixed;bottom:30px;right:30px;width:50px;height:50px;background:var(--accent-purple);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;pointer-events:none;transition:all .3s}
.back-to-top.visible{opacity:1;pointer-events:all}
.back-to-top:hover{transform:translateY(-5px);box-shadow:0 10px 30px rgba(114,9,183,.3)}
@media (max-width:1200px){.right-sidebar{display:none}}
@media (max-width:768px){.toc-sidebar{display:none}.main-container{max-width:100%;padding:24px 16px;margin:0 auto}.hero-title{font-size:2rem}.content h1{font-size:2rem}.ai-page nav .nav-links{display:none}}
@media (max-width: 768px){
  .main-container{ max-width: 100%; padding: 24px 16px; margin: 0 auto; }
  .content{ max-width: 100%; }
  .content img, .content iframe, .pipeline-flow{ max-width: 100%; }
  .pipeline-flow{ overflow-x: auto; -webkit-overflow-scrolling: touch; }
}