:root{--color-bg-primary:#0a0a0f;--color-bg-secondary:#12121a;--color-bg-tertiary:#1a1a25;--color-bg-elevated:#22222f;--color-accent-primary:#6366f1;--color-accent-secondary:#8b5cf6;--color-accent-tertiary:#a855f7;--color-accent-gradient:linear-gradient(135deg, #6366f1 0%, #a855f7 100%);--color-success:#22c55e;--color-warning:#f59e0b;--color-error:#ef4444;--color-info:#3b82f6;--color-text-primary:#f8fafc;--color-text-secondary:#94a3b8;--color-text-tertiary:#64748b;--color-text-muted:#475569;--glass-bg:#ffffff08;--glass-border:#ffffff14;--glass-shadow:0 8px 32px #0000004d;--glass-blur:20px;--space-xs:.25rem;--space-sm:.5rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--space-3xl:4rem;--radius-sm:6px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--font-family:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs:.75rem;--font-size-sm:.875rem;--font-size-md:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-size-3xl:2rem;--font-size-4xl:2.5rem;--font-size-5xl:3rem;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-normal:.25s cubic-bezier(.4, 0, .2, 1);--transition-slow:.35s cubic-bezier(.4, 0, .2, 1);--z-dropdown:100;--z-sticky:200;--z-modal:300;--z-tooltip:400;--z-toast:500;--sidebar-width:280px;--sidebar-collapsed-width:72px;--header-height:64px}[data-theme=light]{--color-bg-primary:#f8fafc;--color-bg-secondary:#f1f5f9;--color-bg-tertiary:#e2e8f0;--color-bg-elevated:#fff;--color-text-primary:#0f172a;--color-text-secondary:#475569;--color-text-tertiary:#64748b;--color-text-muted:#94a3b8;--glass-bg:#ffffffb3;--glass-border:#00000014;--glass-shadow:0 8px 32px #0000001a}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{font-family:var(--font-family);background-color:var(--color-bg-primary);color:var(--color-text-primary);min-height:100vh;line-height:1.6;overflow-x:hidden}#app{min-height:100vh;display:flex}.glass{background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);box-shadow:var(--glass-shadow)}.glass-card{background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--glass-shadow);transition:transform var(--transition-normal), box-shadow var(--transition-normal)}.glass-card:hover{transform:translateY(-2px);box-shadow:0 12px 40px #0006}.shell{width:100%;min-height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background:var(--color-bg-secondary);border-right:1px solid var(--glass-border);height:100vh;z-index:var(--z-sticky);transition:width var(--transition-normal), transform var(--transition-normal);flex-direction:column;display:flex;position:fixed;top:0;left:0}.sidebar.collapsed{width:var(--sidebar-collapsed-width)}.sidebar-header{height:var(--header-height);padding:var(--space-md) var(--space-lg);align-items:center;gap:var(--space-md);border-bottom:1px solid var(--glass-border);display:flex}.sidebar-logo{font-size:var(--font-size-xl);background:var(--color-accent-gradient);-webkit-text-fill-color:transparent;background-clip:text;font-weight:700}.sidebar-nav{padding:var(--space-md);flex:1;overflow-y:auto}.nav-section{margin-bottom:var(--space-lg)}.nav-section-title{font-size:var(--font-size-xs);text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-tertiary);padding:var(--space-sm) var(--space-md);margin-bottom:var(--space-xs);font-weight:600}.nav-item{align-items:center;gap:var(--space-md);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:var(--font-size-sm);transition:all var(--transition-fast);cursor:pointer;font-weight:500;text-decoration:none;display:flex}.nav-item:hover{background:var(--glass-bg);color:var(--color-text-primary)}.nav-item.active{background:var(--color-accent-gradient);color:#fff}.nav-item-icon{justify-content:center;align-items:center;width:20px;height:20px;font-size:1.1em;display:flex}.main-content{margin-left:var(--sidebar-width);min-height:100vh;transition:margin-left var(--transition-normal);flex:1}.sidebar.collapsed~.main-content{margin-left:var(--sidebar-collapsed-width)}.header{height:var(--header-height);padding:0 var(--space-xl);border-bottom:1px solid var(--glass-border);background:var(--color-bg-secondary);z-index:var(--z-sticky);justify-content:space-between;align-items:center;display:flex;position:sticky;top:0}.page-container{padding:var(--space-xl);max-width:1400px;margin:0 auto}.tool-grid{gap:var(--space-lg);grid-template-columns:repeat(auto-fill,minmax(280px,1fr));display:grid}.tool-card{background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:var(--space-xl);cursor:pointer;transition:all var(--transition-normal);color:inherit;text-decoration:none;display:block}.tool-card:hover{border-color:var(--color-accent-primary);transform:translateY(-4px);box-shadow:0 20px 50px #6366f126}.tool-card-icon{border-radius:var(--radius-md);background:var(--color-accent-gradient);width:56px;height:56px;margin-bottom:var(--space-md);justify-content:center;align-items:center;font-size:1.5rem;display:flex}.tool-card-title{font-size:var(--font-size-lg);margin-bottom:var(--space-xs);font-weight:600}.tool-card-description{font-size:var(--font-size-sm);color:var(--color-text-secondary);line-height:1.5}.file-upload-zone{border:2px dashed var(--glass-border);border-radius:var(--radius-lg);padding:var(--space-3xl);text-align:center;background:var(--glass-bg);transition:all var(--transition-normal);cursor:pointer}.file-upload-zone:hover,.file-upload-zone.dragover{border-color:var(--color-accent-primary);background:#6366f10d}.file-upload-icon{margin-bottom:var(--space-md);opacity:.5;font-size:3rem}.file-upload-title{font-size:var(--font-size-lg);margin-bottom:var(--space-xs);font-weight:600}.file-upload-hint{font-size:var(--font-size-sm);color:var(--color-text-tertiary)}.btn{justify-content:center;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-md);font-family:var(--font-family);font-size:var(--font-size-sm);cursor:pointer;transition:all var(--transition-fast);border:none;font-weight:600;text-decoration:none;display:inline-flex}.btn-primary{background:var(--color-accent-gradient);color:#fff;box-shadow:0 4px 15px #6366f14d}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px #6366f166}.btn-secondary{background:var(--glass-bg);color:var(--color-text-primary);border:1px solid var(--glass-border)}.btn-secondary:hover{background:var(--color-bg-tertiary)}.btn-lg{padding:var(--space-md) var(--space-xl);font-size:var(--font-size-md);border-radius:var(--radius-lg)}.btn-icon{border-radius:var(--radius-md);width:40px;height:40px;padding:0}.progress-bar{background:var(--color-bg-tertiary);border-radius:var(--radius-full);height:8px;overflow:hidden}.progress-bar-fill{background:var(--color-accent-gradient);border-radius:var(--radius-full);height:100%;transition:width var(--transition-normal)}.spinner{border:3px solid var(--glass-border);border-top-color:var(--color-accent-primary);border-radius:50%;width:24px;height:24px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-overlay{backdrop-filter:blur(8px);justify-content:center;align-items:center;gap:var(--space-lg);z-index:var(--z-modal);background:#000c;flex-direction:column;display:flex;position:fixed;inset:0}.input{width:100%;padding:var(--space-md);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-md);color:var(--color-text-primary);font-family:var(--font-family);font-size:var(--font-size-md);transition:all var(--transition-fast)}.input:focus{border-color:var(--color-accent-primary);outline:none;box-shadow:0 0 0 3px #6366f133}.select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;padding-right:40px}.seo-content{margin-top:var(--space-3xl);padding-top:var(--space-3xl);border-top:1px solid var(--glass-border)}.seo-content h2{font-size:var(--font-size-2xl);margin-bottom:var(--space-lg);color:var(--color-text-primary);font-weight:700}.seo-content h3{font-size:var(--font-size-xl);margin:var(--space-xl) 0 var(--space-md);color:var(--color-text-primary);font-weight:600}.seo-content p{font-size:var(--font-size-md);color:var(--color-text-secondary);margin-bottom:var(--space-md);line-height:1.8}.seo-content ul{margin:var(--space-md) 0;padding-left:var(--space-xl)}.seo-content li{font-size:var(--font-size-md);color:var(--color-text-secondary);margin-bottom:var(--space-sm);line-height:1.7}.toast-container{bottom:var(--space-xl);right:var(--space-xl);z-index:var(--z-toast);gap:var(--space-sm);flex-direction:column;display:flex;position:fixed}.toast{background:var(--color-bg-elevated);border:1px solid var(--glass-border);border-radius:var(--radius-md);padding:var(--space-md) var(--space-lg);box-shadow:var(--glass-shadow);align-items:center;gap:var(--space-md);animation:.3s ease-out slideIn;display:flex}.toast.success{border-left:4px solid var(--color-success)}.toast.error{border-left:4px solid var(--color-error)}.toast.warning{border-left:4px solid var(--color-warning)}.toast.info{border-left:4px solid var(--color-info)}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@media (width<=768px){:root{--sidebar-width:100%}.sidebar{width:100%;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-content{margin-left:0}.page-container{padding:var(--space-md)}.tool-grid{grid-template-columns:1fr}.mobile-nav{background:var(--color-bg-secondary);border-top:1px solid var(--glass-border);height:72px;z-index:var(--z-sticky);justify-content:space-around;align-items:center;display:flex;position:fixed;bottom:0;left:0;right:0}.mobile-nav-item{align-items:center;gap:var(--space-xs);color:var(--color-text-tertiary);font-size:var(--font-size-xs);padding:var(--space-sm);flex-direction:column;text-decoration:none;display:flex}.mobile-nav-item.active{color:var(--color-accent-primary)}.mobile-nav-icon{font-size:1.5rem}.main-content{padding-bottom:88px}}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--space-sm)}.gap-md{gap:var(--space-md)}.gap-lg{gap:var(--space-lg)}.mb-sm{margin-bottom:var(--space-sm)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.mb-xl{margin-bottom:var(--space-xl)}.hidden{display:none!important}.sr-only{clip:rect(0, 0, 0, 0);border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}