:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--primary-color: #1677ff;--bg-primary: #f0f2f5;--bg-secondary: #ffffff;--bg-tertiary: #fafafa;--text-primary: rgba(0, 0, 0, .88);--text-secondary: rgba(0, 0, 0, .45);--border-color: #f0f0f0}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh}#root{min-height:100vh}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#404040}.main-layout{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;position:fixed;height:100vh;left:0;top:0}.sidebar-logo{padding:20px;font-size:24px;font-weight:600;color:var(--primary-color);border-bottom:1px solid var(--border-color)}.content-area{flex:1;margin-left:240px;padding:24px;background:var(--bg-primary);min-height:100vh}.wizard-container{max-width:800px;margin:0 auto}.wizard-header{text-align:center;margin-bottom:48px}.wizard-title{font-size:28px;font-weight:600;margin-bottom:8px}.wizard-subtitle{color:var(--text-secondary);font-size:16px}.upload-area{border:2px dashed var(--border-color);border-radius:12px;padding:48px;text-align:center;background:var(--bg-secondary);transition:all .3s ease;cursor:pointer}.upload-area:hover{border-color:var(--primary-color);background:var(--bg-tertiary)}.upload-icon{font-size:48px;color:var(--primary-color);margin-bottom:16px}.project-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:20px;transition:all .3s ease}.project-card:hover{border-color:var(--primary-color);transform:translateY(-2px)}.knowledge-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;text-align:center}.knowledge-placeholder img{max-width:300px;margin-bottom:24px;opacity:.8}