.app-layout{background:#f8fafc}.app-layout,.main-content{display:flex;min-height:100vh}.main-content{flex:1;margin-left:280px;transition:margin-left .3s cubic-bezier(.4,0,.2,1);flex-direction:column}.main-content.sidebar-collapsed{margin-left:0;padding-left:0}.top-navbar{background:rgba(255,255,255,.8);backdrop-filter:blur(20px);padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:10}.main-content.sidebar-collapsed .top-navbar{padding-left:1rem}.nav-left{display:flex;align-items:center;gap:1rem}.mobile-menu-container{display:block}.page-title-section{display:flex;align-items:center;gap:.75rem;cursor:pointer}.page-logo{border-radius:8px;transition:all .3s ease}.page-logo:hover{transform:scale(1.05)}.page-title{font-size:1.5rem;font-weight:700;color:#1e293b;margin:0}.page-subtitle{color:#64748b;margin:0;font-size:.875rem}.nav-right{display:flex;align-items:center;gap:1rem}.content-wrapper{flex:1;padding:1rem;display:flex;flex-direction:column;gap:1rem}.main-content.sidebar-collapsed .content-wrapper{padding-left:1rem}.tools-grid{gap:1.5rem}.tool-card{background:white;border-radius:12px;padding:1.5rem;box-shadow:0 1px 3px rgba(0,0,0,.1);transition:all .3s ease;cursor:pointer;border:1px solid transparent;content-visibility:auto;contain-intrinsic-size:320px 360px}.tool-card:hover{transform:translateY(-2px);box-shadow:0 4px 20px rgba(0,0,0,.15);border-color:#3b82f6}.tool-header{display:flex;align-items:flex-start;gap:1rem;margin-bottom:1rem}.tool-icon{font-size:2.5rem;flex-shrink:0}.tool-name{flex:1;font-size:1.125rem;font-weight:600;color:#1e293b;margin:0;line-height:1.4}.tool-description{color:#64748b;font-size:.875rem;line-height:1.5;margin:0 0 1rem}.tool-footer{display:flex;justify-content:space-between;align-items:center}.tool-tags{display:flex;gap:.5rem;flex-wrap:wrap}.tool-tag{background:#f1f5f9;color:#475569;padding:.25rem .5rem;border-radius:6px;font-size:.75rem;font-weight:500}.tool-meta{color:#94a3b8;font-size:.75rem}.empty-state{text-align:center;padding:4rem 2rem;background:white;border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,.1)}.empty-icon{font-size:4rem;margin-bottom:1rem}.empty-title{font-size:1.5rem;font-weight:600;color:#1e293b;margin:0 0 .5rem}.empty-description{color:#64748b;margin:0}.category-header{background:white;padding:1.5rem;border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,.1);margin-bottom:1.5rem;display:flex;flex-direction:column;gap:.5rem}.category-title{font-size:1.25rem;font-weight:700;color:#1e293b;margin:0}.category-subtitle{color:#64748b;font-size:.875rem;margin:0}.technical-intro-section{margin-bottom:0;padding-bottom:0;border:none}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1rem;margin:0;padding:0;border:none}.hot-tools-section{margin-bottom:2rem}.hot-tools-section .section-header{margin-bottom:1.5rem;text-align:center}.hot-tools-section .section-title{font-size:1.875rem;font-weight:700;color:#1f2937;margin-bottom:.5rem;background:linear-gradient(135deg,#f59e0b,#ef4444);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hot-tools-section .section-subtitle{font-size:1rem;color:#6b7280;margin:0}.tool-rank{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;background:linear-gradient(135deg,#f59e0b,#ef4444);color:white;border-radius:50%;font-size:12px;font-weight:600;flex-shrink:0}.hot-tools-page .tool-card{position:relative;transition:all .3s ease}.hot-tools-page .tool-card:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,0,0,.1)}.hot-tools-page .tool-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.hot-tools-page .tool-header .flex{display:flex;align-items:center;gap:12px}.hot-tools-page .tool-name{font-size:1.1rem;font-weight:600;color:#1f2937;margin:0;line-height:1.3}.hot-tools-page .tool-description{color:#6b7280;font-size:.9rem;line-height:1.5;margin:0 0 16px}.hot-tools-page .tool-footer{display:flex;justify-content:space-between;align-items:center;margin-top:16px;padding-top:12px;border-top:1px solid #f3f4f6}.hot-tools-page .tool-tags{display:flex;gap:6px;flex-wrap:wrap}.hot-tools-page .tool-tag{display:inline-block;padding:2px 8px;background:#f3f4f6;color:#6b7280;border-radius:12px;font-size:.75rem;font-weight:500}.hot-tools-page .tool-meta{display:flex;align-items:center;gap:4px}.hot-tools-page .favorite-btn{color:#9ca3af;transition:color .2s ease}.hot-tools-page .favorite-btn:hover{color:#fbbf24}.mobile-menu-btn{display:flex;align-items:center;justify-content:center;background:transparent;border:none;cursor:pointer;padding:8px;border-radius:6px;transition:background-color .2s}.mobile-menu-btn:hover{background-color:rgba(0,0,0,.05)}.menu-icon{display:flex;align-items:center;justify-content:center}.mobile-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background-color:rgba(0,0,0,.5);z-index:999;backdrop-filter:blur(2px);cursor:pointer;touch-action:manipulation;opacity:1;transition:opacity .3s ease}@media (max-width:768px){.main-content{position:relative;z-index:1;transition:none}.main-content,.main-content.sidebar-collapsed{margin-left:0!important;width:100%!important}.content-wrapper{padding:1rem}.tools-grid{grid-template-columns:1fr}.top-navbar{padding:1rem;justify-content:space-between;gap:1rem}.nav-left,.top-navbar{position:relative;display:flex;align-items:center}.nav-left{gap:12px;flex:1;min-width:0;z-index:1000}.page-title-section{flex:1;min-width:0;overflow:hidden}.page-title{font-size:1.25rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nav-right{flex-shrink:0}.mobile-menu-container{display:block}}@media (min-width:769px){.main-content{margin-left:280px;transition:margin-left .3s cubic-bezier(.4,0,.2,1)}.main-content.sidebar-collapsed{margin-left:0}}.home-hero-section{text-align:center;margin-bottom:0;padding:1rem 0;min-height:140px;flex-direction:column}.home-hero-section,.home-main-title{display:flex;align-items:center;justify-content:center}.home-main-title{font-size:1.875rem;font-weight:700;color:#1a202c;margin-bottom:.75rem;line-height:1.3;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;min-height:2.5rem}.home-main-subtitle{font-size:1.125rem;color:#64748b;margin-bottom:0;max-width:800px;margin-left:auto;margin-right:auto;line-height:1.6;min-height:1.75rem;display:flex;align-items:center;justify-content:center}@media (max-width:768px){.home-main-title{font-size:1.5rem}.home-main-subtitle{font-size:1rem;max-width:100%}}