@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600;700&family=Fira+Code:wght@400;500;600&display=swap");[data-app=easyexcel]{--primary:149 64% 20%;--primary-foreground:0 0% 100%;--primary-hover:149 64% 16%;--accent:199 89% 48%;--accent-foreground:0 0% 100%;--background:0 0% 99%;--foreground:220 20% 14%;--card:0 0% 100%;--card-foreground:220 20% 14%;--popover:0 0% 100%;--popover-foreground:220 20% 14%;--secondary:149 30% 93%;--secondary-foreground:149 50% 18%;--muted:149 15% 95%;--muted-foreground:220 10% 46%;--border:149 15% 88%;--input:149 15% 88%;--ring:149 64% 20%;--destructive:0 84% 60%;--destructive-foreground:0 0% 100%;--radius:0.5rem;--font-sans:"IBM Plex Sans",system-ui,sans-serif;--font-mono:"Fira Code",monospace;--font-display:"IBM Plex Sans",system-ui,sans-serif}.dark [data-app=easyexcel],[data-app=easyexcel].dark{--background:220 20% 7%;--foreground:0 0% 93%;--card:220 18% 10%;--card-foreground:0 0% 93%;--popover:220 18% 10%;--popover-foreground:0 0% 93%;--secondary:149 20% 14%;--secondary-foreground:149 20% 85%;--muted:220 15% 14%;--muted-foreground:220 10% 58%;--border:220 15% 20%;--input:220 15% 20%}[data-app=easyexcel]{font-family:var(--font-sans);color:hsl(var(--foreground));background:hsl(var(--background))}[data-app=easyexcel] .font-mono,[data-app=easyexcel] code{font-family:var(--font-mono)!important}[data-app=easyexcel] .font-display{font-family:var(--font-display)!important}@keyframes fadeInUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}[data-app=easyexcel] .animate-fade-in-up{animation:fadeInUp .55s cubic-bezier(.22,1,.36,1) both}[data-app=easyexcel] .animate-fade-in{animation:fadeIn .4s ease-out both}[data-app=easyexcel] .delay-100{animation-delay:.1s}[data-app=easyexcel] .delay-200{animation-delay:.2s}[data-app=easyexcel] .delay-300{animation-delay:.3s}@media (prefers-reduced-motion:reduce){[data-app=easyexcel] .animate-fade-in,[data-app=easyexcel] .animate-fade-in-up{animation:none!important;opacity:1!important;transform:none!important}}[data-app=easyexcel] .hero-section{position:relative;overflow:hidden;padding:clamp(3rem,8vw,6rem) 0 clamp(2.5rem,6vw,4rem);border-bottom:1.5px solid hsl(var(--border))}[data-app=easyexcel] .hero-grid-bg{position:absolute;inset:0;background-image:linear-gradient(hsl(var(--border)/.4) 1px,transparent 1px),linear-gradient(90deg,hsl(var(--border)/.4) 1px,transparent 1px);background-size:32px 32px;mask-image:linear-gradient(180deg,transparent,black 30%,black 70%,transparent);pointer-events:none}[data-app=easyexcel] .hero-inner{max-width:72rem;margin:0 auto;padding:0 clamp(1.25rem,5vw,3rem);position:relative}[data-app=easyexcel] .hero-title{font-family:var(--font-display);font-size:clamp(2.25rem,6vw,4.5rem);font-weight:700;line-height:1.1;letter-spacing:-.03em;color:hsl(var(--foreground));margin:0 0 1rem}[data-app=easyexcel] .hero-title-accent{color:hsl(var(--primary))}[data-app=easyexcel] .hero-subtitle{font-size:clamp(1rem,2vw,1.125rem);color:hsl(var(--muted-foreground));line-height:1.65;max-width:50ch;font-weight:300;margin:0}[data-app=easyexcel] .section-eyebrow{font-size:.6875rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:hsl(var(--primary));display:block;margin-bottom:.75rem}[data-app=easyexcel] .content-section{padding:clamp(2rem,5vw,3.5rem) 0}[data-app=easyexcel] .content-inner{max-width:72rem;margin:0 auto;padding:0 clamp(1.25rem,5vw,3rem)}[data-app=easyexcel] .task-search-wrapper{position:relative;margin-bottom:1.25rem}[data-app=easyexcel] .task-search-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:hsl(var(--muted-foreground));pointer-events:none}[data-app=easyexcel] .task-search-input{width:100%;padding:.875rem 2.5rem .875rem 3rem;background:hsl(var(--card));border:1.5px solid hsl(var(--border));border-radius:var(--radius);color:hsl(var(--foreground));font-size:1rem;font-family:var(--font-sans);outline:none;transition:border-color .15s ease,box-shadow .15s ease}[data-app=easyexcel] .task-search-input::placeholder{color:hsl(var(--muted-foreground));font-weight:300;font-size:.9375rem}[data-app=easyexcel] .task-search-input:focus{border-color:hsl(var(--primary));box-shadow:0 0 0 3px hsl(var(--primary)/.12)}[data-app=easyexcel] .task-search-clear{position:absolute;right:.75rem;top:50%;transform:translateY(-50%);background:none;border:none;color:hsl(var(--muted-foreground));cursor:pointer;padding:.25rem}[data-app=easyexcel] .filter-row{display:flex;flex-direction:column;gap:1rem;margin-bottom:1.5rem}[data-app=easyexcel] .difficulty-filter{display:flex;flex-wrap:wrap;gap:.375rem}[data-app=easyexcel] .difficulty-chip{display:inline-flex;align-items:center;gap:.375rem;padding:.375rem .75rem;background:hsl(var(--card));border:1.5px solid hsl(var(--border));border-radius:2rem;font-size:.8125rem;font-weight:500;cursor:pointer;color:hsl(var(--muted-foreground));transition:all .15s ease;font-family:var(--font-sans)}[data-app=easyexcel] .difficulty-chip:hover{border-color:hsl(var(--primary));color:hsl(var(--primary))}[data-app=easyexcel] .difficulty-chip.active{background:hsl(var(--primary));border-color:hsl(var(--primary));color:hsl(var(--primary-foreground))}[data-app=easyexcel] .difficulty-stars{display:inline-flex;gap:1px;color:inherit}[data-app=easyexcel] .category-filter{display:flex;flex-wrap:wrap;gap:.375rem}[data-app=easyexcel] .category-chip{padding:.375rem .75rem;background:hsl(var(--card));border:1.5px solid hsl(var(--border));border-radius:2rem;font-size:.75rem;font-weight:500;cursor:pointer;color:hsl(var(--muted-foreground));transition:all .15s ease;font-family:var(--font-sans)}[data-app=easyexcel] .category-chip:hover{border-color:hsl(var(--primary));color:hsl(var(--primary))}[data-app=easyexcel] .category-chip.active{background:hsl(var(--primary));border-color:hsl(var(--primary));color:hsl(var(--primary-foreground))}[data-app=easyexcel] .bookmark-chip{display:inline-flex;align-items:center;gap:.375rem}[data-app=easyexcel] .results-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem}[data-app=easyexcel] .results-count{font-size:.8125rem;color:hsl(var(--muted-foreground));font-weight:500}[data-app=easyexcel] .clear-filters-btn{background:none;border:none;color:hsl(var(--primary));font-size:.8125rem;font-weight:500;cursor:pointer;text-decoration:underline;font-family:var(--font-sans)}[data-app=easyexcel] .tutorials-list{display:flex;flex-direction:column;gap:.5rem}[data-app=easyexcel] .tutorial-card{background:hsl(var(--card));border:1.5px solid hsl(var(--border));border-radius:var(--radius);overflow:hidden;transition:border-color .15s ease}[data-app=easyexcel] .tutorial-card:hover{border-color:hsl(var(--primary)/.3)}[data-app=easyexcel] .tutorial-card-header{width:100%;display:flex;align-items:flex-start;gap:1rem;padding:1rem 1.25rem;background:none;border:none;cursor:pointer;text-align:left;color:inherit;font-family:var(--font-sans)}[data-app=easyexcel] .tutorial-title{font-size:1rem;font-weight:600;color:hsl(var(--foreground));margin:0}[data-app=easyexcel] .tutorial-category-tag{font-size:.6875rem;font-weight:500;color:hsl(var(--accent));background:hsl(var(--accent)/.1);padding:.125rem .5rem;border-radius:99px;white-space:nowrap}[data-app=easyexcel] .tutorial-difficulty{display:flex;gap:2px;color:hsl(var(--primary))}[data-app=easyexcel] .bookmark-btn{background:none;border:none;color:hsl(var(--muted-foreground));cursor:pointer;padding:.25rem;transition:color .15s ease}[data-app=easyexcel] .bookmark-btn.bookmarked,[data-app=easyexcel] .bookmark-btn:hover{color:hsl(var(--primary))}[data-app=easyexcel] .tutorial-card-body{border-top:1px solid hsl(var(--border));padding:1rem 1.25rem 1.25rem}[data-app=easyexcel] .tutorial-section-label{font-size:.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:hsl(var(--primary));margin-bottom:.5rem}[data-app=easyexcel] .tutorial-section-label.warning-label{color:hsl(38 92% 50%)}[data-app=easyexcel] .tutorial-plain-english{font-size:.9375rem;color:hsl(var(--foreground));line-height:1.65;margin:0;font-weight:300;background:hsl(var(--secondary));padding:1rem;border-radius:var(--radius);border-left:3px solid hsl(var(--primary))}[data-app=easyexcel] .tutorial-steps{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem}[data-app=easyexcel] .tutorial-step-item{display:flex;align-items:flex-start;gap:.75rem;font-size:.875rem;color:hsl(var(--foreground));line-height:1.5}[data-app=easyexcel] .tutorial-step-num{font-family:var(--font-mono);font-size:.75rem;font-weight:600;color:hsl(var(--primary));background:hsl(var(--primary)/.1);width:1.5rem;height:1.5rem;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}[data-app=easyexcel] .tutorial-mistakes{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem}[data-app=easyexcel] .tutorial-mistake-item{display:flex;align-items:flex-start;gap:.5rem;font-size:.8125rem;color:hsl(var(--muted-foreground));line-height:1.5}[data-app=easyexcel] .tutorial-mistake-item svg{color:hsl(38 92% 50%);flex-shrink:0;margin-top:.1rem}[data-app=easyexcel] .formula-block{display:flex;align-items:center;gap:.5rem;background:hsl(220 20% 8%);border:1px solid hsl(220 15% 18%);border-radius:var(--radius);padding:.75rem 1rem;overflow-x:auto}[data-app=easyexcel] .formula-text{font-family:var(--font-mono);font-size:.875rem;color:hsl(142 71% 65%);white-space:nowrap;flex:1}[data-app=easyexcel] .formula-copy-btn{background:none;border:none;color:hsl(220 10% 50%);cursor:pointer;padding:.25rem;flex-shrink:0;transition:color .15s ease}[data-app=easyexcel] .formula-copy-btn:hover{color:hsl(var(--primary-foreground))}[data-app=easyexcel] .empty-state{text-align:center;padding:3rem 1rem}[data-app=easyexcel] .empty-title{font-size:1.25rem;font-weight:700;color:hsl(var(--foreground));margin-bottom:.5rem}[data-app=easyexcel] .empty-subtitle{font-size:.875rem;color:hsl(var(--muted-foreground))}[data-app=easyexcel] header{border-bottom:1.5px solid hsl(var(--border));background:hsl(var(--background)/.95);backdrop-filter:blur(12px)}