*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}:root{--c-primary:#0d9488;--c-primary-dark:#0f766e;--c-primary-light:#14b8a6;--c-primary-50:#f0fdfa;--c-primary-100:#ccfbf1;--c-accent:#f59e0b;--c-accent-dark:#d97706;--c-accent-light:#fbbf24;--c-bg:#f8fafc;--c-bg-alt:#f1f5f9;--c-surface:#ffffff;--c-surface-hover:#f8fafc;--c-text:#0f172a;--c-text-secondary:#475569;--c-text-tertiary:#94a3b8;--c-border:#e2e8f0;--c-border-strong:#cbd5e1;--c-code-bg:#f1f5f9;--c-danger:#ef4444;--c-success:#22c55e;--c-warning:#f59e0b;--cat-encode:#8b5cf6;--cat-encrypt:#ef4444;--cat-dev:#0d9488;--cat-convert:#f59e0b;--cat-generate:#3b82f6;--cat-text:#ec4899;--cat-date:#10b981;--cat-network:#6366f1;--font-display:'Outfit','Noto Sans SC',sans-serif;--font-body:'Plus Jakarta Sans','Noto Sans SC',sans-serif;--font-mono:'JetBrains Mono','Courier New',monospace;--space-xs:0.25rem;--space-sm:0.5rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--space-3xl:4rem;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:20px;--radius-full:9999px;--shadow-xs:0 1px 2px rgba(0,0,0,0.04);--shadow-sm:0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.07),0 2px 4px -2px rgba(0,0,0,0.05);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.08),0 4px 6px -4px rgba(0,0,0,0.04);--shadow-xl:0 20px 25px -5px rgba(0,0,0,0.1),0 8px 10px -6px rgba(0,0,0,0.04);--ease:cubic-bezier(0.4,0,0.2,1);--ease-out:cubic-bezier(0.0,0,0.2,1);--ease-spring:cubic-bezier(0.34,1.56,0.64,1);--header-h:64px;--container-w:1200px;--sidebar-w:240px}[data-theme="dark"]{--c-primary:#2dd4bf;--c-primary-dark:#14b8a6;--c-primary-light:#5eead4;--c-primary-50:#042f2e;--c-primary-100:#134e4a;--c-accent:#fbbf24;--c-accent-dark:#f59e0b;--c-accent-light:#fcd34d;--c-bg:#0f172a;--c-bg-alt:#1e293b;--c-surface:#1e293b;--c-surface-hover:#334155;--c-text:#f1f5f9;--c-text-secondary:#cbd5e1;--c-text-tertiary:#64748b;--c-border:#334155;--c-border-strong:#475569;--c-code-bg:#0f172a;--shadow-xs:0 1px 2px rgba(0,0,0,0.2);--shadow-sm:0 1px 3px rgba(0,0,0,0.3),0 1px 2px rgba(0,0,0,0.2);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.3),0 2px 4px -2px rgba(0,0,0,0.2);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.3),0 4px 6px -4px rgba(0,0,0,0.15);--shadow-xl:0 20px 25px -5px rgba(0,0,0,0.4),0 8px 10px -6px rgba(0,0,0,0.2)}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-body);background-color:var(--c-bg);color:var(--c-text);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color 0.3s var(--ease),color 0.3s var(--ease);min-height:100vh;display:flex;flex-direction:column}a{color:var(--c-primary);text-decoration:none;transition:color 0.2s var(--ease)}a:hover{color:var(--c-primary-dark)}img{max-width:100%;height:auto}::selection{background-color:var(--c-primary);color:white}.container{max-width:var(--container-w);margin:0 auto;padding:0 var(--space-lg);width:100%}.site-header{position:sticky;top:0;z-index:100;height:var(--header-h);background:color-mix(in srgb,var(--c-surface) 85%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--c-border);transition:background-color 0.3s var(--ease),border-color 0.3s var(--ease)}.site-header .container{height:100%;display:flex;align-items:center;gap:var(--space-lg)}.logo{display:flex;align-items:center;gap:var(--space-sm);font-family:var(--font-display);font-weight:700;font-size:1.3rem;color:var(--c-text);flex-shrink:0;letter-spacing:-0.02em}.logo:hover{color:var(--c-text)}.logo-icon{width:32px;height:32px;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));display:flex;align-items:center;justify-content:center;color:white;box-shadow:var(--shadow-sm);flex-shrink:0}.logo-icon svg{width:20px;height:20px;fill:none;stroke:white;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.logo-text{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.search-wrapper{flex:1;max-width:480px;position:relative}.search-input{width:100%;height:40px;padding:0 var(--space-xl) 0 var(--space-lg);border:1.5px solid var(--c-border);border-radius:var(--radius-full);background-color:var(--c-bg-alt);color:var(--c-text);font-family:var(--font-body);font-size:0.9rem;transition:all 0.2s var(--ease)}.search-input:focus{outline:none;border-color:var(--c-primary);background-color:var(--c-surface);box-shadow:0 0 0 3px color-mix(in srgb,var(--c-primary) 15%,transparent)}.search-input::placeholder{color:var(--c-text-tertiary)}.search-icon{position:absolute;top:50%;transform:translateY(-50%);color:var(--c-text-tertiary);pointer-events:none}.search-clear{position:absolute;right:var(--space-sm);top:50%;transform:translateY(-50%);background:none;border:none;color:var(--c-text-tertiary);cursor:pointer;padding:4px;border-radius:var(--radius-full);display:none;transition:color 0.2s var(--ease),background 0.2s var(--ease)}.search-clear:hover{color:var(--c-text);background:var(--c-bg-alt)}.search-clear.visible{display:block}.search-results{position:absolute;top:calc(100% + 8px);left:0;right:0;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);max-height:400px;overflow-y:auto;display:none;z-index:200}.search-results.visible{display:block}.search-result-item{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-lg);cursor:pointer;transition:background 0.15s var(--ease);border-bottom:1px solid var(--c-border)}.search-result-item:last-child{border-bottom:none}.search-result-item:hover{background:var(--c-surface-hover)}.search-result-item.selected{background:var(--c-surface-hover)}.search-result-icon{width:36px;height:36px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}.search-result-info{flex:1;min-width:0}.search-result-name{font-weight:600;font-size:0.9rem;color:var(--c-text);margin-bottom:2px}.search-result-desc{font-size:0.78rem;color:var(--c-text-tertiary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.search-result-cat{font-size:0.7rem;color:var(--c-text-tertiary);padding:2px 8px;border-radius:var(--radius-full);background:var(--c-bg-alt);flex-shrink:0}.search-no-results{padding:var(--space-xl);text-align:center;color:var(--c-text-tertiary);font-size:0.9rem}.header-actions{display:flex;align-items:center;gap:var(--space-sm);flex-shrink:0}.theme-toggle{width:40px;height:40px;border-radius:var(--radius-full);border:1.5px solid var(--c-border);background:var(--c-surface);color:var(--c-text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.2s var(--ease);font-size:1.1rem}.theme-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);transform:rotate(15deg)}.theme-toggle .icon-moon{display:none}.theme-toggle .icon-sun{display:block}[data-theme="dark"] .theme-toggle .icon-moon{display:block}[data-theme="dark"] .theme-toggle .icon-sun{display:none}.main-content{flex:1;padding:var(--space-2xl) 0}.hero{text-align:center;padding:var(--space-3xl) 0 var(--space-2xl);position:relative;overflow:hidden}.hero::before{content:'';position:absolute;top:-50%;left:50%;transform:translateX(-50%);width:600px;height:600px;background:radial-gradient(circle,color-mix(in srgb,var(--c-primary) 8%,transparent),transparent 70%);pointer-events:none;z-index:-1}.hero-badge{display:inline-flex;align-items:center;gap:var(--space-sm);padding:6px 16px;border-radius:var(--radius-full);background:var(--c-primary-50);border:1px solid var(--c-primary-100);color:var(--c-primary-dark);font-size:0.8rem;font-weight:500;margin-bottom:var(--space-lg);animation:fadeInDown 0.6s var(--ease-out)}.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary);animation:pulse 2s infinite}.hero h1{font-family:var(--font-display);font-size:clamp(2rem,5vw,3.2rem);font-weight:800;letter-spacing:-0.03em;line-height:1.1;margin-bottom:var(--space-md);animation:fadeInUp 0.6s var(--ease-out) 0.1s both}.hero h1 .gradient-text{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{font-size:1.1rem;color:var(--c-text-secondary);max-width:560px;margin:0 auto var(--space-xl);animation:fadeInUp 0.6s var(--ease-out) 0.2s both}.hero-search{max-width:560px;margin:0 auto;position:relative;animation:fadeInUp 0.6s var(--ease-out) 0.3s both}.hero-search-input{width:100%;height:52px;padding:0 120px 0 var(--space-xl);border:2px solid var(--c-border);border-radius:var(--radius-full);background:var(--c-surface);color:var(--c-text);font-family:var(--font-body);font-size:1rem;box-shadow:var(--shadow-md);transition:all 0.2s var(--ease)}.hero-search-input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--c-primary) 12%,transparent),var(--shadow-md)}.hero-search-btn{position:absolute;right:6px;top:6px;height:40px;padding:0 var(--space-lg);border:none;border-radius:var(--radius-full);background:var(--c-primary);color:white;font-family:var(--font-body);font-weight:600;font-size:0.9rem;cursor:pointer;transition:background 0.2s var(--ease);display:flex;align-items:center;gap:var(--space-xs)}.hero-search-btn:hover{background:var(--c-primary-dark)}.hero-stats{display:flex;justify-content:center;gap:var(--space-3xl);margin-top:var(--space-2xl);animation:fadeInUp 0.6s var(--ease-out) 0.4s both}.hero-stat{text-align:center}.hero-stat-num{font-family:var(--font-display);font-size:1.8rem;font-weight:700;color:var(--c-primary);letter-spacing:-0.02em}.hero-stat-label{font-size:0.8rem;color:var(--c-text-tertiary);text-transform:uppercase;letter-spacing:0.05em}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-xl)}.section-heading h2{font-family:var(--font-display);font-size:1.5rem;font-weight:700;letter-spacing:-0.02em;display:flex;align-items:center;gap:var(--space-sm)}.section-heading h2 .cat-icon{width:28px;height:28px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:0.9rem}.section-heading .cat-count{font-size:0.85rem;color:var(--c-text-tertiary);font-weight:400}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--space-lg);margin-bottom:var(--space-3xl)}.category-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:var(--space-xl);transition:all 0.25s var(--ease);position:relative;overflow:hidden;cursor:pointer}.category-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--cat-color,var(--c-primary));transform:scaleX(0);transform-origin:left;transition:transform 0.3s var(--ease)}.category-card:hover{border-color:var(--cat-color,var(--c-primary));box-shadow:var(--shadow-lg);transform:translateY(-2px)}.category-card:hover::before{transform:scaleX(1)}.category-card-icon{width:48px;height:48px;border-radius:var(--radius-md);background:color-mix(in srgb,var(--cat-color,var(--c-primary)) 12%,transparent);color:var(--cat-color,var(--c-primary));display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:var(--space-md)}.category-card h3{font-family:var(--font-display);font-size:1.15rem;font-weight:600;margin-bottom:var(--space-xs);letter-spacing:-0.01em}.category-card p{font-size:0.85rem;color:var(--c-text-secondary);margin-bottom:var(--space-md);line-height:1.5}.category-card-meta{display:flex;align-items:center;justify-content:space-between;font-size:0.8rem;color:var(--c-text-tertiary)}.category-card-meta .tool-count{font-weight:600;color:var(--cat-color,var(--c-primary))}.category-card-arrow{transition:transform 0.2s var(--ease)}.category-card:hover .category-card-arrow{transform:translateX(4px)}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--space-md);margin-bottom:var(--space-3xl)}.tool-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-md);padding:var(--space-lg);transition:all 0.2s var(--ease);display:flex;flex-direction:column;gap:var(--space-sm);position:relative;overflow:hidden}.tool-card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-md);transform:translateY(-1px)}.tool-card-icon{width:40px;height:40px;border-radius:var(--radius-sm);background:color-mix(in srgb,var(--cat-color,var(--c-primary)) 10%,transparent);color:var(--cat-color,var(--c-primary));display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}.tool-card-name{font-weight:600;font-size:0.92rem;color:var(--c-text);letter-spacing:-0.01em}.tool-card-desc{font-size:0.78rem;color:var(--c-text-tertiary);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tool-card-hot{position:absolute;top:var(--space-sm);right:var(--space-sm);font-size:0.65rem;font-weight:600;color:var(--c-accent);background:color-mix(in srgb,var(--c-accent) 12%,transparent);padding:2px 6px;border-radius:var(--radius-full)}.tool-page{display:grid;grid-template-columns:var(--sidebar-w) 1fr;gap:var(--space-2xl);align-items:start}.tool-sidebar{position:sticky;top:calc(var(--header-h) + var(--space-lg));background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:var(--space-lg);max-height:calc(100vh - var(--header-h) - var(--space-2xl));overflow-y:auto}.tool-sidebar h3{font-family:var(--font-display);font-size:0.85rem;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--c-text-tertiary);margin-bottom:var(--space-md);padding-bottom:var(--space-sm);border-bottom:1px solid var(--c-border)}.sidebar-link{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-sm);color:var(--c-text-secondary);font-size:0.88rem;transition:all 0.15s var(--ease);margin-bottom:2px}.sidebar-link:hover{background:var(--c-surface-hover);color:var(--c-text)}.sidebar-link.active{background:var(--c-primary-50);color:var(--c-primary-dark);font-weight:600}[data-theme="dark"] .sidebar-link.active{background:var(--c-primary-100);color:var(--c-primary-light)}.sidebar-link .sidebar-icon{width:20px;text-align:center;flex-shrink:0}.breadcrumb{display:flex;align-items:center;gap:var(--space-xs);font-size:0.82rem;color:var(--c-text-tertiary);margin-bottom:var(--space-md)}.breadcrumb a{color:var(--c-text-tertiary)}.breadcrumb a:hover{color:var(--c-primary)}.breadcrumb .separator{color:var(--c-text-tertiary);opacity:0.5}.breadcrumb .current{color:var(--c-text);font-weight:500}.tool-content{min-width:0}.tool-header{margin-bottom:var(--space-xl)}.tool-header h1{font-family:var(--font-display);font-size:1.8rem;font-weight:700;letter-spacing:-0.02em;margin-bottom:var(--space-sm);display:flex;align-items:center;gap:var(--space-md)}.tool-header-icon{width:40px;height:40px;border-radius:var(--radius-md);background:color-mix(in srgb,var(--cat-color,var(--c-primary)) 12%,transparent);color:var(--cat-color,var(--c-primary));display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}.tool-header p{color:var(--c-text-secondary);font-size:0.95rem;max-width:600px}.tool-box{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:var(--space-xl);box-shadow:var(--shadow-sm)}.form-group{margin-bottom:var(--space-lg)}.form-group:last-child{margin-bottom:0}.form-label{display:block;font-size:0.85rem;font-weight:600;color:var(--c-text);margin-bottom:var(--space-sm)}.form-hint{font-size:0.78rem;color:var(--c-text-tertiary);margin-top:var(--space-xs)}textarea,input[type="text"],input[type="number"],select{width:100%;padding:var(--space-md);border:1.5px solid var(--c-border);border-radius:var(--radius-md);background:var(--c-bg-alt);color:var(--c-text);font-family:var(--font-mono);font-size:0.88rem;transition:all 0.2s var(--ease);resize:vertical}textarea{min-height:120px;line-height:1.5}textarea:focus,input[type="text"]:focus,input[type="number"]:focus,select:focus{outline:none;border-color:var(--c-primary);background:var(--c-surface);box-shadow:0 0 0 3px color-mix(in srgb,var(--c-primary) 12%,transparent)}textarea::placeholder,input::placeholder{color:var(--c-text-tertiary)}.input-group{display:flex;gap:var(--space-sm)}.input-group textarea,.input-group input{flex:1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);height:42px;padding:0 var(--space-lg);border:none;border-radius:var(--radius-md);font-family:var(--font-body);font-weight:600;font-size:0.88rem;cursor:pointer;transition:all 0.2s var(--ease);white-space:nowrap;text-decoration:none}.btn-primary{background:var(--c-primary);color:white}.btn-primary:hover{background:var(--c-primary-dark);color:white;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--c-bg-alt);color:var(--c-text);border:1.5px solid var(--c-border)}.btn-secondary:hover{border-color:var(--c-primary);color:var(--c-primary)}.btn-accent{background:var(--c-accent);color:white}.btn-accent:hover{background:var(--c-accent-dark);color:white}.btn-danger{background:transparent;color:var(--c-danger);border:1.5px solid var(--c-border)}.btn-danger:hover{border-color:var(--c-danger);background:color-mix(in srgb,var(--c-danger) 8%,transparent)}.btn-sm{height:34px;padding:0 var(--space-md);font-size:0.82rem}.btn-block{width:100%}.btn-row{display:flex;gap:var(--space-sm);flex-wrap:wrap;margin-bottom:var(--space-lg)}.btn-row:last-child{margin-bottom:0}.output-area{position:relative;margin-top:var(--space-lg)}.output-label{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-sm)}.output-label .form-label{margin-bottom:0}.output-content{background:var(--c-code-bg);border:1.5px solid var(--c-border);border-radius:var(--radius-md);padding:var(--space-md);font-family:var(--font-mono);font-size:0.88rem;line-height:1.5;color:var(--c-text);min-height:80px;word-break:break-all;white-space:pre-wrap;overflow-x:auto}.output-content.empty{color:var(--c-text-tertiary);font-style:italic}.copy-btn{background:none;border:1px solid var(--c-border);color:var(--c-text-secondary);padding:4px 10px;border-radius:var(--radius-sm);font-size:0.78rem;cursor:pointer;transition:all 0.2s var(--ease);display:inline-flex;align-items:center;gap:4px}.copy-btn:hover{border-color:var(--c-primary);color:var(--c-primary)}.copy-btn.copied{border-color:var(--c-success);color:var(--c-success);background:color-mix(in srgb,var(--c-success) 8%,transparent)}.option-group{display:flex;gap:var(--space-md);flex-wrap:wrap}.option-label{display:flex;align-items:center;gap:var(--space-xs);cursor:pointer;font-size:0.88rem;color:var(--c-text);padding:var(--space-sm) var(--space-md);border:1.5px solid var(--c-border);border-radius:var(--radius-md);transition:all 0.2s var(--ease);user-select:none}.option-label:hover{border-color:var(--c-primary)}.option-label input{margin:0;accent-color:var(--c-primary)}.option-label:has(input:checked){border-color:var(--c-primary);background:var(--c-primary-50);color:var(--c-primary-dark);font-weight:600}[data-theme="dark"] .option-label:has(input:checked){background:var(--c-primary-100);color:var(--c-primary-light)}.checkbox-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:var(--space-sm)}.slider-group{margin-bottom:var(--space-lg)}.slider-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-sm)}.slider-value{font-family:var(--font-mono);font-weight:600;color:var(--c-primary);background:var(--c-primary-50);padding:2px 10px;border-radius:var(--radius-full);font-size:0.85rem}input[type="range"]{width:100%;height:6px;border-radius:var(--radius-full);background:var(--c-bg-alt);-webkit-appearance:none;appearance:none;outline:none}input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--c-primary);cursor:pointer;box-shadow:var(--shadow-sm);transition:transform 0.15s var(--ease)}input[type="range"]::-webkit-slider-thumb:hover{transform:scale(1.2)}input[type="range"]::-moz-range-thumb{width:18px;height:18px;border:none;border-radius:50%;background:var(--c-primary);cursor:pointer;box-shadow:var(--shadow-sm)}.toast{position:fixed;bottom:var(--space-2xl);left:50%;transform:translateX(-50%) translateY(100px);background:var(--c-text);color:var(--c-surface);padding:var(--space-md) var(--space-xl);border-radius:var(--radius-full);font-size:0.88rem;font-weight:500;box-shadow:var(--shadow-xl);z-index:1000;opacity:0;transition:all 0.3s var(--ease-spring);display:flex;align-items:center;gap:var(--space-sm);pointer-events:none}.toast.show{transform:translateX(-50%) translateY(0);opacity:1}.toast.success{background:var(--c-success);color:white}.toast.error{background:var(--c-danger);color:white}.info-panel{margin-top:var(--space-xl);background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-lg);overflow:hidden}.info-panel summary{padding:var(--space-md) var(--space-lg);cursor:pointer;font-weight:600;font-size:0.9rem;color:var(--c-text);display:flex;align-items:center;gap:var(--space-sm);transition:background 0.2s var(--ease);list-style:none}.info-panel summary::-webkit-details-marker{display:none}.info-panel summary::marker{display:none}.info-panel summary:hover{background:var(--c-surface-hover)}.info-panel summary .chevron{margin-left:auto;transition:transform 0.2s var(--ease)}.info-panel[open] summary .chevron{transform:rotate(180deg)}.info-panel-body{padding:0 var(--space-lg) var(--space-lg);font-size:0.88rem;line-height:1.7;color:var(--c-text-secondary)}.info-panel-body h4{color:var(--c-text);font-weight:600;margin-top:var(--space-md);margin-bottom:var(--space-sm)}.info-panel-body ul{padding-left:var(--space-lg);margin-bottom:var(--space-sm)}.info-panel-body li{margin-bottom:var(--space-xs)}.info-panel-body code{font-family:var(--font-mono);font-size:0.82rem;background:var(--c-code-bg);padding:2px 6px;border-radius:var(--radius-sm);color:var(--c-primary)}.related-tools{margin-top:var(--space-2xl)}.related-tools h3{font-family:var(--font-display);font-size:1.1rem;font-weight:600;margin-bottom:var(--space-md)}.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:var(--space-md)}.site-footer{background:var(--c-surface);border-top:1px solid var(--c-border);padding:var(--space-2xl) 0 var(--space-lg);margin-top:auto}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--space-2xl);margin-bottom:var(--space-xl)}.footer-brand p{font-size:0.85rem;color:var(--c-text-secondary);margin-top:var(--space-sm);max-width:280px;line-height:1.6}.footer-col h4{font-family:var(--font-display);font-size:0.9rem;font-weight:600;margin-bottom:var(--space-md);color:var(--c-text)}.footer-col ul{list-style:none}.footer-col li{margin-bottom:var(--space-sm)}.footer-col a{font-size:0.85rem;color:var(--c-text-secondary)}.footer-col a:hover{color:var(--c-primary)}.footer-bottom{padding-top:var(--space-lg);border-top:1px solid var(--c-border);display:flex;align-items:center;justify-content:space-between;font-size:0.82rem;color:var(--c-text-tertiary)}.footer-bottom a{color:var(--c-text-tertiary)}.footer-bottom a:hover{color:var(--c-primary)}@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{from{opacity:0}to{opacity:1}}@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.5}}@keyframes spin{to{transform:rotate(360deg)}}.fade-in{animation:fadeIn 0.4s var(--ease-out)}.stagger>*{animation:fadeInUp 0.5s var(--ease-out) both}.stagger>*:nth-child(1){animation-delay:0.05s}.stagger>*:nth-child(2){animation-delay:0.1s}.stagger>*:nth-child(3){animation-delay:0.15s}.stagger>*:nth-child(4){animation-delay:0.2s}.stagger>*:nth-child(5){animation-delay:0.25s}.stagger>*:nth-child(6){animation-delay:0.3s}.stagger>*:nth-child(7){animation-delay:0.35s}.stagger>*:nth-child(8){animation-delay:0.4s}@media (max-width:1024px){.tool-page{grid-template-columns:1fr}.tool-sidebar{position:static;max-height:none;order:2}.footer-grid{grid-template-columns:1fr 1fr}}@media (max-width:768px){:root{--space-3xl:2.5rem;--space-2xl:2rem}.site-header .container{gap:var(--space-sm)}.search-wrapper{max-width:none}.logo-text{display:none}.hero-stats{gap:var(--space-xl)}.category-grid{grid-template-columns:1fr}.tool-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr;gap:var(--space-lg)}.footer-bottom{flex-direction:column;gap:var(--space-sm);text-align:center}.tool-header h1{font-size:1.4rem}.btn-row{flex-direction:column}.btn-row .btn{width:100%}}@media (max-width:480px){.tool-grid{grid-template-columns:1fr}.hero-search-input{padding-right:var(--space-xl)}.hero-search-btn{position:static;margin-top:var(--space-sm);width:100%;height:44px}.hero-search{display:flex;flex-direction:column}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--c-border-strong);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--c-text-tertiary)}.text-center{text-align:center}.mt-0{margin-top:0}.hidden{display:none !important}.mono{font-family:var(--font-mono)}.json-key{color:#0d9488}.json-string{color:#f59e0b}.json-number{color:#3b82f6}.json-boolean{color:#ec4899}.json-null{color:#94a3b8}[data-theme="dark"] .json-key{color:#5eead4}[data-theme="dark"] .json-string{color:#fbbf24}[data-theme="dark"] .json-number{color:#60a5fa}[data-theme="dark"] .json-boolean{color:#f472b6}[data-theme="dark"] .json-null{color:#94a3b8}