*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-bg: #ffffff;--color-surface: #f8fafc;--color-border: #e2e8f0;--color-text: #1e293b;--color-muted: #64748b;--color-heading: #0f172a;--radius: 8px;--radius-lg: 12px;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2.5rem}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--color-text);background:var(--color-bg);line-height:1.6}h1,h2,h3,h4{color:var(--color-heading);line-height:1.2}h1{font-size:2rem;margin-bottom:var(--spacing-md)}h2{font-size:1.5rem;margin-bottom:var(--spacing-sm)}h3{font-size:1.125rem}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}p{margin-bottom:var(--spacing-md)}.container{max-width:960px;margin:0 auto;padding:0 var(--spacing-lg)}.site-header{background:var(--color-heading);padding:var(--spacing-md) 0;position:sticky;top:0;z-index:100}.header-inner{display:flex;align-items:center;gap:var(--spacing-lg);flex-wrap:wrap}.logo{color:#fff;font-size:1.25rem;font-weight:800;text-decoration:none}.logo:hover{text-decoration:none;color:#93c5fd}.cat-nav{display:flex;gap:var(--spacing-xs);flex-wrap:wrap}.cat-link{display:flex;align-items:center;gap:var(--spacing-xs);padding:6px 12px;border-radius:999px;font-size:.8125rem;font-weight:600;color:#ffffffb3;text-decoration:none;transition:all .15s}.cat-link:hover{background:#ffffff1a;color:#fff;text-decoration:none}.cat-link.active{background:var(--color-primary);color:#fff}.cat-icon{font-size:.875rem}.main-content{padding:var(--spacing-xl) var(--spacing-lg)}.tool-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-xl);margin-bottom:var(--spacing-xl);scroll-margin-top:80px}.tool-card h2{color:var(--color-primary);margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-sm);border-bottom:2px solid var(--color-border)}.tool-explainer{margin-top:var(--spacing-lg);padding-top:var(--spacing-lg);border-top:1px solid var(--color-border);font-size:.92rem}.tool-explainer h4{color:var(--color-heading);font-size:.85rem;margin:var(--spacing-md) 0 var(--spacing-xs);text-transform:uppercase;letter-spacing:.04em;font-weight:700}.tool-explainer h4:first-child{margin-top:0}.tool-explainer p{margin:0 0 var(--spacing-sm);line-height:1.6;color:var(--color-muted)}.related-tools{margin-top:var(--spacing-lg);padding-top:var(--spacing-md);border-top:1px solid var(--color-border)}.related-tools-label{font-size:.7rem;color:var(--color-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--spacing-sm);font-weight:700}.related-tools-grid{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.related-tool-link{display:inline-block;padding:6px 12px;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);text-decoration:none;color:var(--color-primary);font-size:.85rem;font-weight:500;transition:all .15s}.related-tool-link:hover{border-color:var(--color-primary);background:var(--color-primary);color:#fff;text-decoration:none}.tool-form{margin-bottom:var(--spacing-lg)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-md);margin-bottom:var(--spacing-md)}@media(max-width:600px){.form-row{grid-template-columns:1fr}}.form-group{margin-bottom:var(--spacing-md)}.form-group label{display:block;font-weight:600;margin-bottom:var(--spacing-xs);font-size:.875rem;color:var(--color-heading)}.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius);font-size:1rem;font-family:inherit}.form-group input:focus,.form-group select:focus{outline:2px solid var(--color-primary);outline-offset:1px;border-color:var(--color-primary)}.tool-result{background:#fff;border:2px solid var(--color-primary);border-radius:var(--radius);padding:var(--spacing-lg);margin-top:var(--spacing-md)}.tool-result h3{margin-top:0;color:var(--color-primary);margin-bottom:var(--spacing-md)}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-sm)}@media(max-width:600px){.result-grid{grid-template-columns:1fr}}.result-item{padding:var(--spacing-sm) var(--spacing-md);background:var(--color-surface);border-radius:var(--radius);border:1px solid var(--color-border)}.result-label{font-size:.75rem;color:var(--color-muted);text-transform:uppercase;letter-spacing:.05em}.result-value{font-size:1.25rem;font-weight:700;color:var(--color-heading)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 24px;border-radius:var(--radius);font-weight:600;font-size:.9375rem;cursor:pointer;border:none;transition:all 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a{color:var(--color-heading);text-decoration:none}.category-card h3 a:hover{color:var(--color-primary);text-decoration:none}.category-card p{color:var(--color-muted);font-size:.875rem;margin:0 0 var(--spacing-sm)}.category-icon{font-size:2rem;margin-bottom:var(--spacing-md)}.tool-list{list-style:none;padding:0;margin-top:var(--spacing-sm);border-top:1px solid var(--color-border);padding-top:var(--spacing-sm)}.tool-list li{font-size:.875rem;padding:3px 0}.tool-list li a{color:var(--color-text);text-decoration:none;display:block;padding:2px 0}.tool-list li a:hover{color:var(--color-primary);text-decoration:none}.tool-list li a:before{content:"→ ";color:var(--color-primary);opacity:.5}.tool-list li a:hover:before{opacity:1}.inline-kbd{font-family:ui-monospace,monospace;font-size:.75rem;background:var(--color-surface);border:1px solid var(--color-border);border-radius:4px;padding:1px 6px;color:var(--color-heading)}.site-footer{background:var(--color-heading);color:#ffffffb3;padding:var(--spacing-xl) 0 var(--spacing-lg);margin-top:var(--spacing-xl)}.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-xl);margin-bottom:var(--spacing-lg)}@media(max-width:600px){.footer-grid{grid-template-columns:1fr}}.footer-grid h4{color:#fff;margin-bottom:var(--spacing-sm);font-size:.9375rem}.footer-grid a{display:block;color:#fff9;font-size:.875rem;padding:2px 0;text-decoration:none}.footer-grid a:hover{color:#fff}.footer-about{font-size:.875rem;margin-bottom:var(--spacing-sm)}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:var(--spacing-md);text-align:center;font-size:.8125rem;color:#fff6}.qr-output{text-align:center;padding:var(--spacing-lg)}.qr-output canvas,.qr-output img{max-width:256px;margin:0 auto}.color-preview{width:100%;height:80px;border-radius:var(--radius);border:1px solid var(--color-border);margin-bottom:var(--spacing-md)}.generated-output{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:var(--spacing-md);font-family:monospace;font-size:.875rem;word-break:break-all;margin-top:var(--spacing-md);position:relative}.copy-btn{position:absolute;top:8px;right:8px;padding:4px 12px;font-size:.75rem}.breadcrumbs{font-size:.875rem;color:var(--color-muted);margin-bottom:var(--spacing-md)}.breadcrumbs a{color:var(--color-muted)}.breadcrumbs a:hover{color:var(--color-primary)}.breadcrumbs .sep{margin:0 6px;color:var(--color-border)}.intro-lede{font-size:1.0625rem;color:var(--color-text);margin-bottom:var(--spacing-lg);line-height:1.65}.tldr-box{background:#f0f9ff;border-left:4px solid var(--color-primary);border-radius:var(--radius);padding:var(--spacing-md) var(--spacing-lg);margin-bottom:var(--spacing-lg)}.tldr-box h2{font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;color:var(--color-primary);margin:0 0 var(--spacing-xs);padding:0;border:none}.tldr-box p{margin:0;color:var(--color-heading);font-size:.9375rem}.tldr-box code{background:#2563eb14;padding:1px 6px;border-radius:4px;font-size:.875rem}.deep-section{margin-top:var(--spacing-xl)}.deep-section h2{font-size:1.375rem;margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-xs);border-bottom:1px solid var(--color-border)}.deep-section p{color:var(--color-text)}.deep-section ul{margin:var(--spacing-sm) 0 var(--spacing-md) var(--spacing-lg);color:var(--color-text)}.deep-section ul li{margin-bottom:var(--spacing-xs)}.faq-item{margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-md);border-bottom:1px solid var(--color-border)}.faq-item:last-child{border-bottom:none}.faq-item h3{font-size:1rem;color:var(--color-heading);margin-bottom:var(--spacing-xs)}.faq-item p{color:var(--color-text);margin:0}.tools-grid-deep{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--spacing-md)}.tools-grid-deep a{display:block;padding:var(--spacing-md);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);text-decoration:none}.tools-grid-deep a:hover{border-color:var(--color-primary);text-decoration:none}.tools-grid-deep h3{color:var(--color-primary);margin-bottom:4px;font-size:1rem}.tools-grid-deep p{color:var(--color-muted);margin:0;font-size:.8125rem}.tool-guide-link{display:inline-block;font-size:.75rem;font-weight:600;color:var(--color-primary);background:#2563eb14;padding:3px 10px;border-radius:999px;margin-left:var(--spacing-sm);vertical-align:middle;text-decoration:none}.tool-guide-link:hover{background:#2563eb26;text-decoration:none}.search-wrap{background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:var(--spacing-md) 0}.search-container{position:relative}.search-box{display:flex;align-items:center;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);padding:0 var(--spacing-md);transition:border-color .15s,box-shadow .15s}.search-box:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1f}.search-icon{color:var(--color-muted);flex-shrink:0}#site-search{flex:1;border:none;outline:none;padding:12px var(--spacing-sm);font-size:.9375rem;background:transparent;color:var(--color-text);min-width:0}#site-search::placeholder{color:var(--color-muted)}.search-hint{font-family:ui-monospace,monospace;font-size:.75rem;color:var(--color-muted);background:var(--color-surface);border:1px solid var(--color-border);border-radius:4px;padding:2px 8px;flex-shrink:0}.search-results{display:none;position:absolute;top:calc(100% + 4px);left:var(--spacing-lg);right:var(--spacing-lg);background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:0 8px 24px #0f172a1f;max-height:70vh;overflow-y:auto;z-index:50}.search-result{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-md);border-bottom:1px solid var(--color-border);text-decoration:none;color:var(--color-text);gap:var(--spacing-md)}.search-result:last-child{border-bottom:none}.search-result:hover,.search-result.active{background:var(--color-surface);text-decoration:none}.search-result-name{font-weight:600;color:var(--color-heading);font-size:.9375rem}.search-result-name mark{background:#fef08a;color:inherit;padding:0}.search-result-cat{font-size:.75rem;color:var(--color-muted);text-transform:uppercase;letter-spacing:.05em;flex-shrink:0}.search-empty{padding:var(--spacing-md);color:var(--color-muted);font-size:.875rem;text-align:center}