.footer-container{background-color:var(--bg-secondary);border-top:1px solid var(--border);padding:60px 24px 20px;margin-top:60px}.footer-inner{max-width:1200px;margin:0 auto;display:flex;flex-direction:column;gap:40px}.footer-top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}.footer-brand{max-width:300px}.footer-brand .nav-logo{margin-bottom:16px;display:inline-flex}.footer-description{color:var(--text-secondary);font-size:.95rem;line-height:1.6}.footer-links-grid{display:flex;gap:60px;flex-wrap:wrap}.footer-column h4{color:var(--text-primary);font-size:1.05rem;font-weight:700;margin-bottom:20px}.footer-column ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}.footer-column a{color:var(--text-secondary);font-size:.95rem;transition:var(--transition)}.footer-column a:hover{color:var(--brand-green)}.footer-bottom{padding-top:24px;border-top:1px solid var(--border);display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px}.footer-bottom p{color:var(--text-muted);font-size:.85rem;margin:0}@media (max-width: 768px){.footer-top{flex-direction:column}.footer-links-grid{gap:40px}}.app-layout{display:flex;flex-direction:column;min-height:100vh}.navbar{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--navbar-height);background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm)}.nav-inner{max-width:1400px;margin:0 auto;padding:0 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var(--border);border-radius:var(--radius-md);border-top-left-radius:0;border-top-right-radius:0;padding:24px;display:grid;grid-template-columns:repeat(3,1fr);grid-gap:30px;width:900px;max-width:95vw}.dropdown-column{display:flex;flex-direction:column;gap:12px}.dropdown-header{font-weight:700;font-size:1.05rem;padding-bottom:8px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px}.dropdown-items{display:flex;flex-direction:column;gap:6px}.dropdown-item{padding:6px 8px;border-radius:var(--radius-sm);font-size:.85rem;color:var(--text-secondary);transition:var(--transition)}.dropdown-item:hover{background:var(--bg-secondary);color:var(--text-primary);transform:translate(4px)}.mobile-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:8px}.mobile-toggle span{width:24px;height:2px;background:var(--text-primary);border-radius:2px;transition:var(--transition)}.mobile-menu{display:none;position:fixed;top:var(--navbar-height);left:0;right:0;bottom:0;background:#fff;z-index:90;overflow-y:auto;padding:24px}.mobile-menu.open{display:block}.mobile-group{margin-bottom:24px}.mobile-group-title{display:flex;align-items:center;gap:10px;font-size:1.1rem;font-weight:700;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--border)}.mobile-group-items{display:flex;flex-direction:column;gap:8px;padding-left:10px}.mobile-item{font-size:.95rem;color:var(--text-secondary);padding:8px 0}.mobile-item:hover{color:var(--brand-green)}.main-content{flex:1;margin-top:var(--navbar-height);width:100%}@media (max-width: 1024px){.dropdown-menu{grid-template-columns:repeat(2,1fr);width:600px}}@media (max-width: 768px){.desktop-menu{display:none}.mobile-toggle{display:flex}.mobile-toggle span.active:nth-child(1){transform:translateY(7px) rotate(45deg)}.mobile-toggle span.active:nth-child(2){opacity:0}.mobile-toggle span.active:nth-child(3){transform:translateY(-7px) rotate(-45deg)}}.home{max-width:1100px;margin:0 auto}.hero{text-align:center;padding:80px 20px 100px;position:relative;overflow:hidden;border-radius:var(--radius-xl);background:#fdfdfd;margin-bottom:60px;border:1px solid var(--border);box-shadow:var(--shadow-sm)}.hero-shapes{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.shape{position:absolute;border-radius:50%;filter:blur(80px);opacity:.15}.s1{width:400px;height:400px;background:radial-gradient(circle,rgba(46,204,113,.5),transparent);top:-100px;right:-100px;animation:hfloat 10s ease-in-out infinite}.s2{width:350px;height:350px;background:radial-gradient(circle,rgba(14,165,233,.4),transparent);bottom:-80px;left:-100px;animation:hfloat 12s ease-in-out infinite reverse}.s3{width:300px;height:300px;background:radial-gradient(circle,rgba(46,204,113,.3),transparent);top:50%;left:50%;transform:translate(-50%,-50%);animation:hpulse 8s ease-in-out infinite}@keyframes hfloat{0%,to{transform:translateY(0)}50%{transform:translateY(-30px)}}@keyframes hpulse{0%,to{transform:translate(-50%,-50%) scale(1);opacity:.15}50%{transform:translate(-50%,-50%) scale(1.1);opacity:.25}}.hero-content{position:relative;z-index:2;max-width:750px;margin:0 auto}.hero-badge{display:inline-block;padding:8px 20px;background:#2ecc711a;border:1px solid rgba(46,204,113,.2);border-radius:50px;font-size:.85rem;font-weight:600;color:var(--brand-dark-green);margin-bottom:24px}.hero h1{font-size:clamp(2.2rem,5vw,3.5rem);font-weight:900;line-height:1.15;letter-spacing:-1.5px;margin-bottom:20px;color:#1e293b}.hero-sub{font-size:1.15rem;color:var(--text-secondary);line-height:1.7;margin-bottom:35px;max-width:650px;margin-left:auto;margin-right:auto}.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.hero-actions .btn{padding:14px 28px;font-size:1.05rem}.section-title{font-size:2rem;font-weight:800;text-align:center;margin-bottom:40px;letter-spacing:-.5px;color:var(--text-primary)}.categories-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;margin-bottom:80px}.category-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:30px;transition:var(--transition);position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}.category-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--cat-color);opacity:.8}.category-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#e2e8f0cc}.cat-card-icon{font-size:2.5rem;display:block;margin-bottom:15px}.category-card h3{font-size:1.2rem;font-weight:800;margin-bottom:10px;color:var(--text-primary)}.category-card p{font-size:.9rem;color:var(--text-secondary);line-height:1.6;margin-bottom:16px}.cat-count{font-size:.85rem;font-weight:600;color:var(--brand-green)}.popular-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin-bottom:60px}.popular-card{display:flex;align-items:center;gap:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px;transition:var(--transition);box-shadow:var(--shadow-sm)}.popular-card:hover{border-color:var(--brand-green);transform:translateY(-3px);box-shadow:var(--shadow-md)}.popular-icon{font-size:1.6rem;flex-shrink:0;background:#2ecc711a;width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm)}.popular-card h4{font-size:.95rem;font-weight:700;color:var(--text-primary);margin-bottom:4px}.popular-cat{font-size:.75rem;color:var(--text-muted)}.popular-arrow{margin-left:auto;color:var(--brand-green);font-size:1.2rem;opacity:0;transition:var(--transition)}.popular-card:hover .popular-arrow{opacity:1;transform:translate(4px)}@media (max-width: 768px){.categories-grid,.popular-grid{grid-template-columns:1fr}.hero{padding:60px 20px 80px}}.cat-page{max-width:900px;margin:0 auto}.cat-page-header{margin-bottom:32px}.cat-page-icon{font-size:2.5rem;display:block;margin-bottom:8px}.cat-page-header h1{font-size:1.8rem;font-weight:800;margin-bottom:6px}.cat-page-header p{color:var(--text-secondary);font-size:.95rem}.cat-tools-grid{display:grid;grid-template-columns:1fr;gap:12px}.cat-tool-card{display:flex;align-items:center;gap:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 24px;transition:var(--transition)}.cat-tool-card:hover{border-color:var(--cat-color);transform:translate(4px);box-shadow:0 0 20px color-mix(in srgb,var(--cat-color) 12%,transparent)}.tool-card-icon{font-size:1.8rem;flex-shrink:0}.tool-card-body{flex:1}.tool-card-body h3{font-size:1rem;font-weight:700;margin-bottom:3px}.tool-card-body p{font-size:.83rem;color:var(--text-secondary);line-height:1.4}.tool-card-arrow{font-size:1.2rem;color:var(--accent-blue);opacity:0;transition:var(--transition);flex-shrink:0}.cat-tool-card:hover .tool-card-arrow{opacity:1;transform:translate(4px)}.concepts-page{max-width:1000px;margin:0 auto}.concepts-header{margin-bottom:24px}.concepts-icon{font-size:2.5rem;display:block;margin-bottom:8px}.concepts-header h1{font-size:1.8rem;font-weight:800;margin-bottom:6px}.concepts-header p{color:var(--text-secondary);font-size:.95rem}.concepts-filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}.filter-btn{padding:7px 18px;border-radius:50px;font-size:.82rem;font-weight:500;background:var(--bg-glass);border:1px solid var(--border);color:var(--text-secondary);transition:var(--transition)}.filter-btn:hover{color:var(--text-primary);border-color:var(--brand-green)}.filter-btn.active{background:var(--gradient-primary);color:#fff;border-color:transparent}.concepts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.concept-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px;transition:var(--transition);display:flex;flex-direction:column}.concept-card.article-link{cursor:pointer;text-decoration:none;color:inherit}.concept-card:hover{transform:translateY(-3px);border-color:#2ecc714d;box-shadow:var(--shadow-glow)}.concept-icon{font-size:1.6rem;margin-bottom:8px;display:block}.concept-card h3{font-size:1.05rem;font-weight:700;margin-bottom:6px}.concept-card p{font-size:.84rem;color:var(--text-secondary);line-height:1.55;margin-bottom:20px;flex-grow:1}.concept-footer{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border);padding-top:15px}.concept-tag{display:inline-block;padding:3px 10px;border-radius:50px;font-size:.7rem;font-weight:600;text-transform:uppercase;background:#2ecc711a;color:var(--brand-green)}.read-more{font-size:.85rem;color:var(--brand-green);font-weight:600;transition:transform .2s}.concept-card:hover .read-more{transform:translate(3px)}.concept-article{max-width:800px;margin:40px auto;padding:0 24px}.article-header{margin-bottom:40px}.back-link{display:inline-block;color:var(--text-secondary);margin-bottom:20px;font-size:.95rem;transition:var(--transition)}.back-link:hover{color:var(--brand-green);transform:translate(-4px)}.article-badge{display:inline-block;padding:6px 14px;background:#2ecc711a;color:var(--brand-green);border-radius:20px;font-size:.85rem;font-weight:600;text-transform:capitalize;margin-bottom:16px}.article-header h1{font-size:2.5rem;color:var(--text-primary);line-height:1.2}.article-content{background:#fff;border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-sm);border:1px solid var(--border);margin-bottom:60px}.article-lead{font-size:1.2rem;line-height:1.8;color:var(--text-primary);margin-bottom:40px;padding-bottom:20px;border-bottom:1px solid var(--border)}.article-details h3{font-size:1.4rem;color:var(--text-primary);margin-top:35px;margin-bottom:15px;font-weight:700}.article-details p{color:var(--text-secondary);margin-bottom:20px;line-height:1.75;font-size:1.05rem}.article-details ol,.article-details ul.concept-list{margin-left:20px;margin-bottom:25px;color:var(--text-secondary);line-height:1.7}.article-details li{margin-bottom:12px}.article-details strong{color:var(--text-primary)}.table-responsive{overflow-x:auto;margin:30px 0;border-radius:var(--radius-sm);box-shadow:0 4px 6px -1px #0000000d}.concept-table{width:100%;border-collapse:collapse;background:#fff;font-size:.95rem}.concept-table th,.concept-table td{padding:14px 18px;border:1px solid var(--border);text-align:left}.concept-table th{background:var(--bg-secondary);color:var(--brand-dark-green);font-weight:700}.concept-table tbody tr:nth-child(2n){background:#f3f4f680}.concept-table tbody tr:hover{background:#2ecc710d}.article-cta{margin-top:60px;padding:40px 30px;background:#2ecc710d;border-radius:var(--radius-md);border:1px solid rgba(46,204,113,.2);text-align:center}.article-cta h3{font-size:1.4rem;color:var(--brand-dark-green);margin-bottom:10px}.article-cta p{color:var(--text-secondary);margin-bottom:24px}.concept-article-not-found{text-align:center;padding:100px 20px}.concept-article-not-found h2{margin-bottom:20px;color:var(--text-primary)}.static-page{max-width:800px;margin:40px auto;padding:0 24px}.static-header{text-align:center;margin-bottom:50px}.static-header h1{font-size:2.5rem;font-weight:800;margin-bottom:16px;color:var(--text-primary)}.static-header p{font-size:1.1rem;color:var(--text-secondary)}.static-content{background:#fff;border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-sm);border:1px solid var(--border);margin-bottom:60px}.static-content h2{font-size:1.4rem;color:var(--text-primary);margin:30px 0 15px;padding-bottom:10px;border-bottom:1px solid var(--border)}.static-content h2:first-child{margin-top:0}.static-content p{color:var(--text-secondary);margin-bottom:20px;line-height:1.8}.static-content ul,.static-content ol{margin-bottom:20px;padding-left:20px;color:var(--text-secondary)}.static-content li{margin-bottom:10px}.static-content a{color:var(--brand-green);text-decoration:underline}.form-container{max-width:600px;margin:0 auto 60px}.contact-form{display:flex;flex-direction:column;gap:20px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-weight:600;font-size:.95rem;color:var(--text-primary)}.form-group input,.form-group textarea{padding:12px 16px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:1rem;transition:var(--transition)}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--brand-green);background:#fff;box-shadow:0 0 0 3px #2ecc711a}.success-msg{text-align:center;padding:40px 20px;background:#2ecc710d;border-radius:var(--radius-md);border:1px solid rgba(46,204,113,.2)}.success-msg h3{color:var(--brand-green);margin-bottom:12px}.success-msg p{margin-bottom:24px}.calc-page{max-width:900px;margin:0 auto}.calc-header{margin-bottom:28px}.calc-icon{font-size:2.5rem;display:block;margin-bottom:8px}.calc-title{font-size:1.8rem;font-weight:800;letter-spacing:-.5px;margin-bottom:8px}.calc-desc{color:var(--text-secondary);font-size:.95rem}.calc-panel{display:grid;grid-template-columns:1fr 1fr;gap:28px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:32px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.calc-form{display:flex;flex-direction:column;gap:16px}.form-group{display:flex;flex-direction:column;gap:5px}.form-group label{font-size:.82rem;font-weight:600;color:var(--text-secondary)}.form-group input,.form-group select{padding:11px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-input);color:var(--text-primary);font-size:.92rem;transition:var(--transition);outline:none}.form-group input:focus,.form-group select:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px #3b82f61f}.form-group input::placeholder{color:var(--text-muted)}.form-group select option{background:var(--bg-secondary);color:var(--text-primary)}.calc-result{display:flex;flex-direction:column;justify-content:center}.result-grid{display:grid;gap:10px}.result-title{font-size:.95rem;font-weight:700;padding-bottom:10px;border-bottom:1px solid var(--border);margin-bottom:4px}.result-item{background:#ffffff05;border:1px solid var(--border);border-radius:var(--radius-md);padding:12px 16px;display:flex;justify-content:space-between;align-items:center}.result-label{font-size:.82rem;color:var(--text-secondary);font-weight:500}.result-value{font-size:.95rem;font-weight:700}.result-item.highlight{background:#3b82f614;border-color:#3b82f640}.result-item.highlight .result-value{color:var(--accent-blue)}.result-item.success{background:#10b98114;border-color:#10b98140}.result-item.success .result-value{color:var(--accent-green)}.result-item.warning{background:#f59e0b14;border-color:#f59e0b40}.result-item.warning .result-value{color:var(--accent-orange)}.result-item.danger{background:#ef444414;border-color:#ef444440}.result-item.danger .result-value{color:var(--accent-red)}.result-placeholder{display:flex;flex-direction:column;align-items:center;gap:12px;padding:40px 20px;text-align:center}.placeholder-icon{font-size:2.5rem;opacity:.35}.result-placeholder p{color:var(--text-muted);font-size:.88rem}.amort-wrap{margin-top:14px;max-height:280px;overflow-y:auto;border-radius:var(--radius-sm);border:1px solid var(--border)}.amort-table{width:100%;border-collapse:collapse;font-size:.76rem}.amort-table th{background:#3b82f61a;color:var(--accent-blue);font-weight:600;padding:9px 10px;text-align:left;position:sticky;top:0}.amort-table td{padding:7px 10px;border-bottom:1px solid var(--border);color:var(--text-secondary)}.amort-table tr:hover td{background:#ffffff05}.amort-note{font-size:.75rem;color:var(--text-muted);text-align:center;padding:8px}@media (max-width: 768px){.calc-panel{grid-template-columns:1fr;padding:20px}}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #ffffff;--bg-secondary: #f3f4f6;--bg-tertiary: #e5e7eb;--bg-card: #ffffff;--bg-glass: rgba(0, 0, 0, .03);--bg-input: #ffffff;--border: #e2e8f0;--border-focus: rgba(76, 175, 80, .5);--text-primary: #1e293b;--text-secondary: #475569;--text-muted: #64748b;--accent-blue: #3b82f6;--brand-green: #2ecc71;--brand-dark-green: #27ae60;--accent-cyan: #0ea5e9;--accent-green: #2ecc71;--accent-violet: #8b5cf6;--accent-pink: #ec4899;--accent-orange: #f59e0b;--accent-red: #ef4444;--gradient-primary: linear-gradient(135deg, #2ecc71, #27ae60);--gradient-accent: linear-gradient(135deg, #3b82f6, #8b5cf6);--gradient-warm: linear-gradient(135deg, #f59e0b, #ef4444);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-glow: 0 0 20px rgba(46, 204, 113, .2);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--transition: .3s cubic-bezier(.4, 0, .2, 1);--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--navbar-height: 70px}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:var(--radius-md);font-size:.9rem;font-weight:600;transition:var(--transition);border:none;white-space:nowrap}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 15px #3b82f64d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 25px #3b82f673}.btn-full{width:100%;justify-content:center}.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--border)}.btn-outline:hover{background:var(--bg-glass);border-color:var(--accent-blue)}.gradient-text{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--accent-blue)}