:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;color:#333;background-color:#f5f5f5;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.loading-screen{position:fixed;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;z-index:9999;animation:loadingFadeIn .5s ease-out}@keyframes loadingFadeIn{0%{opacity:0}to{opacity:1}}.loading-container{text-align:center;color:#fff;animation:loadingSlideUp .8s ease-out}@keyframes loadingSlideUp{0%{opacity:0;transform:translateY(50px)}to{opacity:1;transform:translateY(0)}}.loading-logo{font-size:6rem;margin-bottom:1.5rem;animation:loadingBounce 2s infinite}@keyframes 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ease-out;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2)}@keyframes suggestionFadeIn{0%{opacity:0;transform:translateY(-15px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.suggestion-item{padding:.8rem 1.2rem;cursor:pointer;transition:all .3s ease;color:#333;border:1px solid rgba(0,0,0,.05);display:flex;align-items:center;position:relative;overflow:hidden;border-radius:12px;margin:.2rem .4rem;background:#fffffff2;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);min-height:50px}.suggestion-item:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(102,126,234,.2),transparent);transition:left .6s ease}.suggestion-item:hover:before{left:100%}.suggestion-item:hover{background:#f8f9fa;transform:translateY(-2px);box-shadow:0 4px 15px #667eea26;border-color:#667eea}.suggestion-item 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p{font-size:.95rem;opacity:.95;margin-bottom:1.2rem;line-height:1.6;flex:1}.progress-bar{background:#ffffff40;border-radius:12px;height:10px;margin-bottom:1.2rem;overflow:hidden;position:relative;box-shadow:inset 0 2px 4px #0000001a}.progress-fill{background:linear-gradient(90deg,#fff,#e3f2fd);height:100%;border-radius:12px;transition:width .8s ease;position:relative;box-shadow:0 2px 4px #ffffff4d}.progress-fill:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);animation:progressShine 2s infinite}@keyframes progressShine{0%{transform:translate(-100%)}to{transform:translate(100%)}}.knowledge-btn{background:#fff;color:#667eea;border:none;padding:.9rem 1.6rem;border-radius:28px;cursor:pointer;font-weight:600;transition:all .3s ease;width:100%;font-size:.95rem;box-shadow:0 6px 20px 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#0000001a}.hot-tag{display:flex;align-items:center;gap:.5rem;background:#f8f9fa;padding:.8rem 1.2rem;border-radius:20px;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 8px #0000000d;position:relative;overflow:hidden}.hot-tag:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(102,126,234,.1),transparent);transition:left .6s ease}.hot-tag:hover:before{left:100%}.hot-tag:hover{transform:translateY(-3px);box-shadow:0 4px 15px #0000001a;background:#f0f0f0}.hot-tag.top-1{background:linear-gradient(135deg,#fff3cd,#ffeaa7);border:1px solid #ffeaa7}.hot-tag.top-2{background:linear-gradient(135deg,#e3f2fd,#bbdefb);border:1px solid #bbdefb}.hot-tag.top-3{background:linear-gradient(135deg,#e8f5e8,#c8e6c9);border:1px solid #c8e6c9}.hot-tag 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