:root{--primary:#4F46E5;--primary-light:#818CF8;--primary-dark:#3730A3;--accent:#06B6D4;--bg:#F9FAFB;--surface:#FFFFFF;--text:#111827;--text-secondary:#6B7280;--text-tertiary:#9CA3AF;--border:#E5E7EB;--border-light:#F3F4F6;--success:#10B981;--warning:#F59E0B;--danger:#EF4444;--radius:12px;--radius-sm:8px;--shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);--shadow-md:0 4px 6px rgba(0,0,0,.05),0 2px 4px rgba(0,0,0,.04);--shadow-lg:0 10px 15px rgba(0,0,0,.07),0 4px 6px rgba(0,0,0,.04);--max-w:1280px}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark)}
img{max-width:100%;height:auto}
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}

/* Header */
.header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;backdrop-filter:blur(12px);background:rgba(255,255,255,.9)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:var(--max-w);margin:0 auto;padding:0 24px}
.logo{font-size:20px;font-weight:700;color:var(--primary);display:flex;align-items:center;gap:8px}
.logo-icon{width:32px;height:32px;background:var(--primary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center}
.logo-icon svg{width:20px;height:20px;fill:#fff}
.nav{display:flex;align-items:center;gap:24px}
.nav a{color:var(--text-secondary);font-size:14px;font-weight:500;transition:color .2s}
.nav a:hover{color:var(--primary)}
.nav-cta{background:var(--primary);color:#fff!important;padding:8px 16px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;transition:background .2s}
.nav-cta:hover{background:var(--primary-dark)}

/* Hero */
.hero{background:linear-gradient(135deg,#4F46E5 0%,#7C3AED 50%,#06B6D4 100%);padding:80px 0 60px;color:#fff;text-align:center}
.hero h1{font-size:48px;font-weight:800;line-height:1.15;margin-bottom:16px;letter-spacing:-.02em}
.hero p{font-size:20px;opacity:.9;max-width:640px;margin:0 auto 36px}
.hero-stats{display:flex;justify-content:center;gap:48px;margin-top:40px}
.hero-stat{text-align:center}
.hero-stat .num{font-size:32px;font-weight:800}
.hero-stat .label{font-size:14px;opacity:.8;margin-top:4px}

/* Search */
.search-wrap{max-width:640px;margin:0 auto;position:relative}
.search-wrap input{width:100%;padding:16px 20px 16px 48px;border:none;border-radius:var(--radius);font-size:16px;box-shadow:var(--shadow-lg);outline:none;background:var(--surface);color:var(--text)}
.search-wrap input:focus{box-shadow:0 0 0 3px rgba(79,70,229,.3),var(--shadow-lg)}
.search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-tertiary)}
.search-icon svg{width:20px;height:20px}
.search-suggestions{position:absolute;top:calc(100% + 8px);left:0;right:0;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-lg);z-index:100;max-height:360px;overflow-y:auto;display:none;border:1px solid var(--border)}
.search-suggestions.active{display:block}
.search-suggestion-item{display:flex;align-items:center;gap:12px;padding:12px 16px;cursor:pointer;transition:background .15s;border-bottom:1px solid var(--border-light)}
.search-suggestion-item:last-child{border-bottom:none}
.search-suggestion-item:hover,.search-suggestion-item.active{background:var(--background)}
.search-suggestion-item .sug-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:14px;flex-shrink:0}
.search-suggestion-item .sug-info{flex:1;min-width:0}
.search-suggestion-item .sug-name{font-weight:600;font-size:14px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.search-suggestion-item .sug-meta{font-size:12px;color:var(--text-secondary);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.search-suggestion-item .sug-arrow{color:var(--text-tertiary);font-size:18px;flex-shrink:0}
.search-suggestion-empty{padding:16px;text-align:center;color:var(--text-secondary);font-size:14px}

/* Category Pills */
.categories{padding:48px 0 32px}
.categories h2{font-size:28px;font-weight:700;text-align:center;margin-bottom:32px}
.cat-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;max-width:900px;margin:0 auto}
.cat-pill{display:flex;align-items:center;gap:8px;padding:10px 20px;background:var(--surface);border:1px solid var(--border);border-radius:100px;font-size:14px;font-weight:500;color:var(--text);cursor:pointer;transition:all .2s;text-decoration:none}
.cat-pill:hover{border-color:var(--primary);color:var(--primary);background:#EEF2FF;transform:translateY(-1px)}
.cat-pill.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.cat-count{background:var(--bg);color:var(--text-secondary);font-size:12px;padding:2px 8px;border-radius:100px;font-weight:600}
.cat-pill.active .cat-count{background:rgba(255,255,255,.2);color:#fff}
.cat-icon{width:20px;height:20px}

/* Tool Grid */
.tools-section{padding:32px 0 64px}
.tools-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:12px}
.tools-header h2{font-size:24px;font-weight:700}
.filter-bar{display:flex;gap:8px;flex-wrap:wrap}
.filter-btn{padding:6px 14px;border:1px solid var(--border);border-radius:100px;font-size:13px;background:var(--surface);color:var(--text-secondary);cursor:pointer;transition:all .2s;font-weight:500}
.filter-btn:hover,.filter-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:all .25s;cursor:pointer;text-decoration:none;color:inherit;display:flex;flex-direction:column}
.tool-card:hover{border-color:var(--primary-light);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.tool-card-top{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:12px}
.tool-icon{width:48px;height:48px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;color:#fff;flex-shrink:0}
.tool-badge{font-size:11px;font-weight:600;padding:3px 10px;border-radius:100px;background:var(--bg);color:var(--text-secondary)}
.tool-badge.free{background:#D1FAE5;color:#065F46}
.tool-badge.freemium{background:#FEF3C7;color:#92400E}
.tool-badge.paid{background:#E0E7FF;color:#3730A3}
.tool-card h3{font-size:18px;font-weight:700;margin-bottom:6px}
.tool-card .desc{font-size:14px;color:var(--text-secondary);line-height:1.5;margin-bottom:16px;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tool-card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.tool-tag{font-size:12px;color:var(--text-tertiary);background:var(--bg);padding:3px 10px;border-radius:100px}
.tool-card-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:16px;border-top:1px solid var(--border-light)}
.tool-rating{display:flex;align-items:center;gap:4px;font-size:13px;font-weight:600;color:var(--text)}
.tool-rating svg{width:14px;height:14px;fill:var(--warning)}
.tool-visit{font-size:13px;font-weight:600;color:var(--primary);display:flex;align-items:center;gap:4px}
.tool-visit svg{width:14px;height:14px}

/* Featured Banner */
.featured-banner{background:linear-gradient(135deg,#4F46E5 0%,#7C3AED 100%);border-radius:var(--radius);padding:32px;margin-bottom:32px;color:#fff;display:flex;align-items:center;gap:24px}
.featured-banner h3{font-size:20px;font-weight:700;margin-bottom:4px}
.featured-banner p{opacity:.85;font-size:14px;max-width:480px}
.featured-banner .visit-btn{background:#fff;color:var(--primary);padding:10px 20px;border-radius:var(--radius-sm);font-weight:600;font-size:14px;margin-left:auto;white-space:nowrap;transition:transform .2s}
.featured-banner .visit-btn:hover{transform:scale(1.05)}

/* Tool Detail Page */
.tool-detail{padding:48px 0 64px}
.tool-detail-header{margin-bottom:40px}
.tool-detail-header h1{font-size:36px;font-weight:800;margin-bottom:8px}
.tool-detail-header .subtitle{font-size:18px;color:var(--text-secondary);max-width:720px;margin-bottom:20px}
.tool-meta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.meta-item{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--text-secondary);background:var(--bg);padding:6px 14px;border-radius:100px}
.tool-detail-grid{display:grid;grid-template-columns:1fr 300px;gap:32px}
.tool-detail-main{min-width:0}
.tool-detail-sidebar{min-width:0}
.detail-section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:24px}
.detail-section h2{font-size:20px;font-weight:700;margin-bottom:16px}
.detail-section h3{font-size:16px;font-weight:600;margin-bottom:12px}
.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pro-item,.con-item{display:flex;gap:10px;font-size:14px;line-height:1.5}
.pro-item::before,.con-item::before{content:'';width:20px;height:20px;border-radius:50%;flex-shrink:0;margin-top:2px}
.pro-item::before{background:#D1FAE5}
.pro-item span::before{content:'+';color:#065F46;font-weight:700;margin-right:6px}
.con-item::before{background:#FEE2E2}
.con-item span::before{content:'-';color:#991B1B;font-weight:700;margin-right:6px}
.sidebar-cta{background:var(--primary);color:#fff;padding:20px;border-radius:var(--radius);text-align:center;margin-bottom:24px}
.sidebar-cta .price{font-size:28px;font-weight:800;margin:8px 0 4px}
.sidebar-cta .price-note{font-size:13px;opacity:.8;margin-bottom:16px}
.sidebar-cta .btn{display:inline-block;background:#fff;color:var(--primary);padding:12px 32px;border-radius:var(--radius-sm);font-weight:700;font-size:15px;transition:transform .2s}
.sidebar-cta .btn:hover{transform:scale(1.05)}
.sidebar-cta .btn-outline{display:block;margin-top:12px;color:#fff;opacity:.8;font-size:13px;text-decoration:underline}

/* Comparison Cards */
.compare-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:32px}
.compare-card{background:var(--surface);border:2px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center}
.compare-card.winner{border-color:var(--primary);background:#EEF2FF}
.compare-card h3{font-size:20px;font-weight:700;margin-bottom:4px}
.compare-card .cat{font-size:13px;color:var(--text-secondary);margin-bottom:12px}
.compare-card .score{font-size:36px;font-weight:800;color:var(--primary);margin-bottom:4px}
.compare-card .score-label{font-size:12px;color:var(--text-tertiary)}

/* Alternatives List */
.alt-list{display:flex;flex-direction:column;gap:12px}
.alt-item{display:flex;align-items:center;gap:16px;padding:16px;background:var(--bg);border-radius:var(--radius-sm);transition:all .2s;text-decoration:none;color:inherit}
.alt-item:hover{background:var(--border-light);transform:translateX(4px)}
.alt-item .alt-icon{width:40px;height:40px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff;flex-shrink:0}
.alt-item .alt-info{flex:1}
.alt-item .alt-info h4{font-size:15px;font-weight:600}
.alt-item .alt-info p{font-size:13px;color:var(--text-secondary)}
.alt-item .alt-arrow{color:var(--text-tertiary)}

/* Blog Article */
.article{max-width:780px;margin:0 auto;padding:48px 24px 64px}
.article h1{font-size:36px;font-weight:800;line-height:1.2;margin-bottom:16px}
.article .meta{font-size:14px;color:var(--text-secondary);margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid var(--border)}
.article h2{font-size:24px;font-weight:700;margin:40px 0 16px;padding-top:24px}
.article h3{font-size:18px;font-weight:600;margin:24px 0 12px}
.article p{font-size:16px;line-height:1.8;color:var(--text-secondary);margin-bottom:16px}
.article ul,.article ol{margin:16px 0;padding-left:24px;color:var(--text-secondary)}
.article li{font-size:16px;line-height:1.8;margin-bottom:8px}
.article a{color:var(--primary);font-weight:500}
.compare-table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;background:var(--surface);border-radius:var(--radius);overflow:hidden}
.compare-table th{background:var(--bg);padding:12px 16px;text-align:left;font-weight:600;border-bottom:1px solid var(--border)}
.compare-table td{padding:12px 16px;border-bottom:1px solid var(--border-light)}
.compare-table tr:last-child td{border-bottom:none}
.check{color:var(--success);font-weight:700}
.cross{color:var(--danger);font-weight:700}

/* Footer */
.footer{background:var(--surface);border-top:1px solid var(--border);padding:48px 0 32px;margin-top:32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.footer-brand p{font-size:14px;color:var(--text-secondary);margin-top:12px;max-width:280px;line-height:1.6}
.footer h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer ul{list-style:none}
.footer li{margin-bottom:10px}
.footer li a{font-size:14px;color:var(--text-secondary)}
.footer li a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;text-align:center;font-size:13px;color:var(--text-tertiary)}

/* Pages */
.page{max-width:780px;margin:0 auto;padding:48px 24px 64px}
.page h1{font-size:32px;font-weight:800;margin-bottom:24px}
.page h2{font-size:22px;font-weight:700;margin:32px 0 12px}
.page p{font-size:16px;line-height:1.8;color:var(--text-secondary);margin-bottom:16px}
.page a{color:var(--primary)}

/* Ad Placeholder */
.ad-slot{background:var(--border-light);border:2px dashed var(--border);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--text-tertiary);font-size:13px;min-height:100px;margin:24px 0;text-align:center;padding:16px}

/* Breadcrumb */
.breadcrumb{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--text-secondary);margin-bottom:24px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-secondary)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-tertiary)}

/* Responsive */
@media(max-width:768px){
  .hero h1{font-size:32px}
  .hero p{font-size:16px}
  .hero-stats{gap:24px;flex-wrap:wrap}
  .hero-stat .num{font-size:24px}
  .tool-grid{grid-template-columns:1fr}
  .tool-detail-grid{grid-template-columns:1fr}
  .pros-cons{grid-template-columns:1fr}
  .compare-cards{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav{display:none}
  .header-inner{height:56px}
  .featured-banner{flex-direction:column;text-align:center}
}
@media(max-width:480px){
  .hero{padding:48px 0 40px}
  .hero h1{font-size:26px}
  .cat-grid{gap:8px}
  .footer-grid{grid-template-columns:1fr}
}

/* Animations */
@keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.tool-card{animation:fadeIn .4s ease both}
.tool-card:nth-child(2){animation-delay:.05s}
.tool-card:nth-child(3){animation-delay:.1s}
.tool-card:nth-child(4){animation-delay:.15s}
.tool-card:nth-child(5){animation-delay:.2s}
.tool-card:nth-child(6){animation-delay:.25s}
.tool-card:nth-child(7){animation-delay:.3s}
.tool-card:nth-child(8){animation-delay:.35s}
.tool-card:nth-child(9){animation-delay:.4s}

/* Category icon colors */
.cat-ai-chatbot{background:#4F46E5}.cat-ai-image{background:#EC4899}.cat-ai-video{background:#F59E0B}.cat-ai-coding{background:#10B981}.cat-ai-writing{background:#6366F1}.cat-ai-research{background:#8B5CF6}.cat-ai-audio{background:#06B6D4}.cat-ai-design{background:#F97316}.cat-ai-productivity{background:#14B8A6}.cat-ai-marketing{background:#EF4444}