.header{background:linear-gradient(135deg,#667eea,#764ba2);box-shadow:var(--shadow-md);position:sticky;top:0;z-index:1000;padding:var(--spacing-md) 0}.header-container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md);display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-lg)}.logo{display:flex;align-items:center;gap:var(--spacing-sm);font-size:var(--font-size-xl);font-weight:700;color:#fff;text-decoration:none;transition:transform var(--transition-base)}.logo:hover{transform:scale(1.05);color:#fff}.logo-icon{font-size:var(--font-size-2xl);animation:heartbeat 1.5s ease-in-out infinite}@keyframes heartbeat{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.logo-text{white-space:nowrap}.nav{display:flex;align-items:center;gap:var(--spacing-lg)}.nav-link{color:#fff;font-weight:500;font-size:var(--font-size-base);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--border-radius-sm);transition:all var(--transition-fast);position:relative}.nav-link:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:2px;background:#fff;transition:width var(--transition-base)}.nav-link:hover{color:#fff;background:#ffffff1a}.nav-link:hover:after{width:100%}.search-form{display:flex;align-items:center;background:#fff;border-radius:var(--border-radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:box-shadow var(--transition-base)}.search-form:focus-within{box-shadow:var(--shadow-md)}.search-input{border:none;padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-base);outline:none;width:240px}.search-btn{padding:var(--spacing-sm) var(--spacing-md);background:transparent;border:none;cursor:pointer;font-size:var(--font-size-lg);display:flex;align-items:center;transition:transform var(--transition-fast)}.search-btn:hover{transform:scale(1.1)}.mobile-menu-toggle{display:none;background:#fff3;color:#fff;border:none;border-radius:var(--border-radius-sm);padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-xl);cursor:pointer;transition:background var(--transition-fast)}.mobile-menu-toggle:hover{background:#ffffff4d}@media (max-width: 768px){.header-container{flex-wrap:wrap}.nav{display:none;width:100%;flex-direction:column;align-items:flex-start;gap:var(--spacing-sm);padding-top:var(--spacing-md)}.nav.nav-open{display:flex}.nav-link{width:100%}.search-form{order:3;width:100%;margin-top:var(--spacing-md)}.search-input{width:100%;flex:1}.mobile-menu-toggle{display:block}.logo-text{font-size:var(--font-size-lg)}}@media (max-width: 480px){.logo-text{display:none}.logo-icon{font-size:var(--font-size-3xl)}}.footer{background:linear-gradient(135deg,#2c3e50,#34495e);color:#fff;margin-top:var(--spacing-3xl);padding-top:var(--spacing-3xl)}.footer-container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md);display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-xl);padding-bottom:var(--spacing-2xl)}.footer-section{display:flex;flex-direction:column;gap:var(--spacing-md)}.footer-title{font-size:var(--font-size-lg);font-weight:600;margin-bottom:var(--spacing-sm);color:#fff;position:relative;padding-bottom:var(--spacing-sm)}.footer-title:after{content:"";position:absolute;bottom:0;left:0;width:40px;height:2px;background:linear-gradient(90deg,#667eea,#764ba2)}.footer-links{display:flex;flex-direction:column;gap:var(--spacing-sm)}.footer-links a{color:#fffc;font-size:var(--font-size-sm);transition:all var(--transition-fast);display:inline-block}.footer-links a:hover{color:#fff;transform:translate(4px)}.footer-bottom{background:#0003;padding:var(--spacing-lg) 0;border-top:1px solid rgba(255,255,255,.1)}.footer-bottom-container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md);display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md)}.copyright{font-size:var(--font-size-sm);color:#fffc;margin:0}.footer-meta{display:flex;align-items:center;gap:var(--spacing-sm);font-size:var(--font-size-xs);color:#fff9}@media (max-width: 768px){.footer-container{grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg)}.footer-bottom-container{flex-direction:column;text-align:center}}@media (max-width: 480px){.footer-container{grid-template-columns:1fr}}.video-card{display:flex;flex-direction:column;background:#fff;border-radius:var(--border-radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition-base);text-decoration:none;color:inherit;height:100%}.video-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-8px)}.video-card-image{position:relative;width:100%;padding-top:56.25%;overflow:hidden;background:var(--bg-tertiary)}.video-card-image img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}.video-card:hover .video-card-image img{transform:scale(1.1)}.video-card-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(to bottom,transparent 0%,rgba(0,0,0,.7) 100%);opacity:0;transition:opacity var(--transition-base);display:flex;align-items:center;justify-content:center}.video-card:hover .video-card-overlay{opacity:1}.play-button{width:64px;height:64px;background:#ffffffe6;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-2xl);color:var(--secondary-color);transform:scale(.8);transition:transform var(--transition-base)}.video-card:hover .play-button{transform:scale(1)}.video-duration{position:absolute;bottom:var(--spacing-sm);right:var(--spacing-sm);background:#000c;color:#fff;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--border-radius-sm);font-size:var(--font-size-xs);font-weight:500}.video-rating{position:absolute;top:var(--spacing-sm);left:var(--spacing-sm);background:#fffffff2;color:var(--text-primary);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--border-radius-sm);font-size:var(--font-size-sm);font-weight:600;display:flex;align-items:center;gap:4px}.video-card-content{padding:var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-sm);flex:1}.video-card-title{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}.video-card-description{font-size:var(--font-size-sm);color:var(--text-secondary);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.5}.video-card-meta{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-sm);margin-top:auto}.video-category{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--border-radius-sm);font-size:var(--font-size-xs);font-weight:500}.video-views{font-size:var(--font-size-xs);color:var(--text-light);display:flex;align-items:center;gap:4px}.video-card-tags{display:flex;flex-wrap:wrap;gap:var(--spacing-xs)}.video-tag{font-size:var(--font-size-xs);color:var(--secondary-color);background:#3498db1a;padding:2px var(--spacing-xs);border-radius:var(--border-radius-sm)}.video-card-horizontal{flex-direction:row}.video-card-horizontal .video-card-image{width:320px;padding-top:0;min-height:180px}.video-card-horizontal .video-card-image img{position:static}.video-card-featured{background:linear-gradient(135deg,#667eea,#764ba2)}.video-card-featured .video-card-content,.video-card-featured .video-card-title{color:#fff}.video-card-featured .video-card-description{color:#ffffffe6}.video-card-featured .video-category{background:#fff3}.video-card-featured .video-views{color:#fffc}.video-card-featured .video-tag{background:#fff3;color:#fff}@media (max-width: 768px){.video-card-horizontal{flex-direction:column}.video-card-horizontal .video-card-image{width:100%;padding-top:56.25%}.video-card-horizontal .video-card-image img{position:absolute}}.home{min-height:100vh}.hero-section{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:var(--spacing-3xl) 0;position:relative;overflow:hidden}.hero-section:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect fill="rgba(255,255,255,0.05)" width="50" height="50"/></svg>');background-size:100px 100px;opacity:.3}.hero-content{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md);display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-3xl);align-items:center;position:relative;z-index:1}.hero-text{display:flex;flex-direction:column;gap:var(--spacing-lg)}.hero-title{font-size:48px;font-weight:700;line-height:1.2;margin:0;animation:slideInLeft .8s ease-out}.hero-subtitle{font-size:var(--font-size-xl);opacity:.95;line-height:1.5;margin:0;animation:slideInLeft .8s ease-out .2s both}.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-lg);margin-top:var(--spacing-lg);animation:slideInLeft .8s ease-out .4s both}.stat-item{text-align:center;padding:var(--spacing-md);background:#ffffff1a;border-radius:var(--border-radius-lg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.stat-number{font-size:var(--font-size-3xl);font-weight:700;margin-bottom:var(--spacing-xs)}.stat-label{font-size:var(--font-size-sm);opacity:.9}.hero-featured{animation:slideInRight .8s ease-out}.hero-video-card{position:relative;display:block;border-radius:var(--border-radius-xl);overflow:hidden;box-shadow:0 20px 60px #0000004d;transition:transform var(--transition-base)}.hero-video-card:hover{transform:scale(1.05)}.hero-video-card img{width:100%;display:block}.hero-video-overlay{position:absolute;bottom:0;left:0;right:0;padding:var(--spacing-xl);background:linear-gradient(to top,rgba(0,0,0,.9) 0%,transparent 100%);color:#fff;display:flex;flex-direction:column;gap:var(--spacing-sm)}.hero-play-button{width:80px;height:80px;background:#ffffffe6;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-3xl);color:var(--secondary-color);position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);transition:all var(--transition-base)}.hero-video-card:hover .hero-play-button{transform:translate(-50%,-50%) scale(1.1)}.hero-video-overlay h3{font-size:var(--font-size-2xl);margin:0}.hero-video-overlay p{font-size:var(--font-size-base);margin:0;opacity:.9}@keyframes slideInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}.categories-section{padding:var(--spacing-3xl) 0;background:var(--bg-secondary)}.section-title{font-size:var(--font-size-3xl);font-weight:700;margin-bottom:var(--spacing-xl);color:var(--text-primary)}.section-title.centered{text-align:center}.categories-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--spacing-lg)}.category-card{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-xl);background:#fff;border-radius:var(--border-radius-lg);box-shadow:var(--shadow-sm);text-decoration:none;transition:all var(--transition-base);position:relative;overflow:hidden}.category-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--category-color);transform:scaleX(0);transition:transform var(--transition-base)}.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-md)}.category-card:hover:before{transform:scaleX(1)}.category-icon{font-size:48px;margin-bottom:var(--spacing-sm)}.category-name{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary)}.trending-section,.latest-section{padding:var(--spacing-3xl) 0}.latest-section{background:var(--bg-secondary)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xl)}.see-more{color:var(--secondary-color);font-weight:500;font-size:var(--font-size-lg);transition:all var(--transition-fast)}.see-more:hover{color:var(--primary-color);transform:translate(4px)}.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-xl)}.video-grid-large{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--spacing-2xl)}.top-rated-section{padding:var(--spacing-3xl) 0;background:linear-gradient(135deg,#f5f7fa,#c3cfe2)}.top-rated-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-2xl)}.top-rated-item{position:relative}.rank-badge{position:absolute;top:-12px;left:-12px;width:48px;height:48px;background:linear-gradient(135deg,#f39c12,#e74c3c);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-xl);font-weight:700;box-shadow:var(--shadow-md);z-index:10}.cta-section{padding:var(--spacing-3xl) 0;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;text-align:center}.cta-content{max-width:600px;margin:0 auto;padding:0 var(--spacing-md)}.cta-title{font-size:var(--font-size-4xl);font-weight:700;margin-bottom:var(--spacing-lg)}.cta-description{font-size:var(--font-size-lg);opacity:.95;margin-bottom:var(--spacing-xl);line-height:1.6}.cta-button{display:inline-block;padding:var(--spacing-md) var(--spacing-2xl);background:#fff;color:var(--secondary-color);font-size:var(--font-size-lg);font-weight:600;border-radius:var(--border-radius-lg);text-decoration:none;transition:all var(--transition-base);box-shadow:var(--shadow-md)}.cta-button:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);color:var(--primary-color)}@media (max-width: 768px){.hero-content{grid-template-columns:1fr;gap:var(--spacing-xl)}.hero-title{font-size:36px}.hero-stats,.categories-grid{grid-template-columns:repeat(3,1fr)}.video-grid,.video-grid-large{grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}.top-rated-grid{grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg)}}@media (max-width: 480px){.hero-title{font-size:28px}.categories-grid{grid-template-columns:repeat(2,1fr)}.video-grid,.video-grid-large,.top-rated-grid{grid-template-columns:1fr}}.hls-player-container{position:relative;width:100%;background:#000;border-radius:var(--border-radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}.hls-player-video{width:100%;display:block;cursor:pointer}.hls-player-controls{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(to top,rgba(0,0,0,.8) 0%,transparent 100%);padding:var(--spacing-md);opacity:0;transition:opacity var(--transition-base)}.hls-player-container:hover .hls-player-controls{opacity:1}.progress-bar{width:100%;height:6px;background:#ffffff4d;border-radius:3px;cursor:pointer;margin-bottom:var(--spacing-sm);position:relative;overflow:hidden}.progress-filled{height:100%;background:linear-gradient(90deg,#667eea,#764ba2);border-radius:3px;transition:width .1s ease;position:relative}.progress-filled:after{content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);width:12px;height:12px;background:#fff;border-radius:50%;box-shadow:0 2px 4px #0000004d}.controls-bottom{display:flex;align-items:center;gap:var(--spacing-md)}.control-btn{background:none;border:none;color:#fff;font-size:var(--font-size-xl);cursor:pointer;padding:var(--spacing-xs);display:flex;align-items:center;justify-content:center;transition:transform var(--transition-fast)}.control-btn:hover{transform:scale(1.1)}.volume-control{display:flex;align-items:center;gap:var(--spacing-sm)}.volume-slider{width:80px;height:4px;background:#ffffff4d;border-radius:2px;outline:none;cursor:pointer;-webkit-appearance:none}.volume-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:12px;height:12px;background:#fff;border-radius:50%;cursor:pointer}.volume-slider::-moz-range-thumb{width:12px;height:12px;background:#fff;border-radius:50%;cursor:pointer;border:none}.time-display{color:#fff;font-size:var(--font-size-sm);font-weight:500;margin-left:auto}.fullscreen-btn{margin-left:var(--spacing-sm)}.hls-player-error{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;background:var(--bg-tertiary);border-radius:var(--border-radius-lg);padding:var(--spacing-2xl);text-align:center}.error-icon{font-size:64px;margin-bottom:var(--spacing-md)}.hls-player-error p{color:var(--text-secondary);font-size:var(--font-size-lg);margin:0}@media (max-width: 768px){.volume-control{display:none}.time-display{font-size:var(--font-size-xs)}.control-btn{font-size:var(--font-size-lg)}}.video-detail{min-height:100vh;background:var(--bg-secondary)}.video-detail-container{max-width:1200px;margin:0 auto;padding:var(--spacing-xl) var(--spacing-md);display:flex;flex-direction:column;gap:var(--spacing-xl)}.video-player-section{width:100%;animation:fadeIn .5s ease-out}.video-info-section{background:#fff;border-radius:var(--border-radius-lg);padding:var(--spacing-xl);box-shadow:var(--shadow-sm);animation:fadeIn .5s ease-out .2s both}.video-breadcrumb{font-size:var(--font-size-sm);color:var(--text-secondary);margin-bottom:var(--spacing-md)}.video-breadcrumb a{color:var(--secondary-color);transition:color var(--transition-fast)}.video-breadcrumb a:hover{color:var(--primary-color)}.video-title{font-size:var(--font-size-4xl);font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-lg);line-height:1.3}.video-meta-bar{display:flex;flex-wrap:wrap;gap:var(--spacing-lg);padding:var(--spacing-lg) 0;border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color);margin-bottom:var(--spacing-lg)}.meta-item{display:flex;align-items:center;gap:var(--spacing-xs)}.meta-icon{font-size:var(--font-size-lg)}.meta-value{font-size:var(--font-size-base);color:var(--text-secondary);font-weight:500}.video-tags{display:flex;flex-wrap:wrap;gap:var(--spacing-sm);margin-bottom:var(--spacing-xl)}.video-category-tag{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--border-radius-md);font-size:var(--font-size-sm);font-weight:600}.video-tag{background:#3498db1a;color:var(--secondary-color);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--border-radius-sm);font-size:var(--font-size-sm);font-weight:500}.video-description-section,.video-review-section{margin-bottom:var(--spacing-xl)}.section-subtitle{font-size:var(--font-size-2xl);font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-md)}.video-description{font-size:var(--font-size-lg);color:var(--text-secondary);line-height:1.8;margin:0}.review-card{background:var(--bg-secondary);border-radius:var(--border-radius-lg);padding:var(--spacing-xl);border-left:4px solid var(--secondary-color)}.review-header{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-md)}.review-avatar{width:48px;height:48px;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-xl)}.review-author{flex:1}.author-name{font-size:var(--font-size-base);font-weight:600;color:var(--text-primary)}.review-date{font-size:var(--font-size-sm);color:var(--text-light)}.review-rating{font-size:var(--font-size-xl);font-weight:700;color:var(--warning-color)}.review-content{font-size:var(--font-size-base);color:var(--text-secondary);line-height:1.8;margin:0;text-align:justify}.related-videos-section{padding:var(--spacing-3xl) 0;background:#fff}.related-videos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-xl)}@media (max-width: 768px){.video-title{font-size:var(--font-size-2xl)}.video-meta-bar{gap:var(--spacing-md)}.meta-item{flex-basis:calc(50% - var(--spacing-md))}.related-videos-grid{grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}}@media (max-width: 480px){.video-detail-container{padding:var(--spacing-md) var(--spacing-sm)}.video-info-section{padding:var(--spacing-md)}.video-title{font-size:var(--font-size-xl)}.meta-item{flex-basis:100%}.related-videos-grid{grid-template-columns:1fr}}.category-page{min-height:100vh;background:var(--bg-secondary)}.category-hero{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:var(--spacing-3xl) 0;text-align:center;position:relative;overflow:hidden}.category-hero:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 30% 50%,rgba(255,255,255,.1) 0%,transparent 50%)}.category-hero-content{position:relative;z-index:1;max-width:800px;margin:0 auto;padding:0 var(--spacing-md);animation:fadeIn .6s ease-out}.category-icon-large{font-size:80px;margin-bottom:var(--spacing-md);animation:bounceIn .8s ease-out}@keyframes bounceIn{0%{transform:scale(.3);opacity:0}50%{transform:scale(1.05)}70%{transform:scale(.9)}to{transform:scale(1);opacity:1}}.category-title{font-size:var(--font-size-4xl);font-weight:700;margin-bottom:var(--spacing-md)}.category-description{font-size:var(--font-size-xl);opacity:.95;margin-bottom:var(--spacing-lg)}.category-stats{font-size:var(--font-size-lg);opacity:.9;padding:var(--spacing-md);background:#ffffff1a;border-radius:var(--border-radius-lg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:inline-block}.category-content{padding:var(--spacing-3xl) 0}.category-toolbar{background:#fff;border-radius:var(--border-radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-xl);box-shadow:var(--shadow-sm);display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md)}.sort-controls{display:flex;align-items:center;gap:var(--spacing-sm);flex-wrap:wrap}.sort-label{font-weight:600;color:var(--text-primary);font-size:var(--font-size-base)}.sort-btn{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border-color);border-radius:var(--border-radius-md);background:#fff;color:var(--text-secondary);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.sort-btn:hover{border-color:var(--secondary-color);color:var(--secondary-color)}.sort-btn.active{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-color:transparent}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-xl)}.no-results{text-align:center;padding:var(--spacing-3xl);background:#fff;border-radius:var(--border-radius-lg);margin-top:var(--spacing-xl)}.no-results-icon{font-size:64px;margin-bottom:var(--spacing-md);opacity:.5}.no-results p{font-size:var(--font-size-lg);color:var(--text-secondary);margin:0}@media (max-width: 768px){.category-icon-large{font-size:64px}.category-title{font-size:var(--font-size-2xl)}.category-description{font-size:var(--font-size-base)}.category-toolbar{flex-direction:column;align-items:flex-start}.category-grid{grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}}@media (max-width: 480px){.category-grid{grid-template-columns:1fr}.sort-controls{width:100%;justify-content:space-between}.sort-btn{flex:1;text-align:center}}.search-page{min-height:100vh;background:var(--bg-secondary)}.search-hero{background:linear-gradient(135deg,#3498db,#2c3e50);color:#fff;padding:var(--spacing-3xl) 0;text-align:center}.search-hero-content{max-width:800px;margin:0 auto;padding:0 var(--spacing-md);animation:fadeIn .6s ease-out}.search-title{font-size:var(--font-size-4xl);font-weight:700;margin-bottom:var(--spacing-md)}.search-query{font-size:var(--font-size-xl);opacity:.95;margin-bottom:var(--spacing-sm)}.search-query .highlight{color:#f39c12;font-weight:600}.search-count{font-size:var(--font-size-lg);opacity:.9}.search-content{padding:var(--spacing-3xl) 0}.search-results-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-xl)}.no-results{text-align:center;padding:var(--spacing-3xl);background:#fff;border-radius:var(--border-radius-lg);box-shadow:var(--shadow-sm)}.no-results-icon{font-size:80px;margin-bottom:var(--spacing-lg);opacity:.5}.no-results h2{font-size:var(--font-size-2xl);color:var(--text-primary);margin-bottom:var(--spacing-sm)}.no-results p{font-size:var(--font-size-lg);color:var(--text-secondary);margin-bottom:var(--spacing-xl)}.search-suggestions{margin-top:var(--spacing-2xl);padding-top:var(--spacing-2xl);border-top:1px solid var(--border-color)}.suggestions-title{font-size:var(--font-size-base);font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-md)}.suggestions-tags{display:flex;flex-wrap:wrap;gap:var(--spacing-sm);justify-content:center}.suggestion-tag{padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-secondary);color:var(--secondary-color);border-radius:var(--border-radius-md);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.suggestion-tag:hover{background:var(--secondary-color);color:#fff;transform:translateY(-2px)}@media (max-width: 768px){.search-title{font-size:var(--font-size-2xl)}.search-query{font-size:var(--font-size-base)}.search-results-grid{grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}.no-results-icon{font-size:64px}}@media (max-width: 480px){.search-results-grid{grid-template-columns:1fr}}.info-page{min-height:100vh;background:var(--bg-secondary)}.info-hero{background:linear-gradient(135deg,#2c3e50,#34495e);color:#fff;padding:var(--spacing-3xl) 0;text-align:center}.info-title{font-size:var(--font-size-4xl);font-weight:700;margin-bottom:var(--spacing-md);animation:fadeIn .6s ease-out}.info-subtitle{font-size:var(--font-size-xl);opacity:.95;animation:fadeIn .6s ease-out .2s both}.info-content{padding:var(--spacing-3xl) 0}.info-section{margin-bottom:var(--spacing-3xl)}.section-heading{font-size:var(--font-size-3xl);font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-xl);padding-bottom:var(--spacing-md);border-bottom:3px solid var(--secondary-color);display:inline-block}.content-card{background:#fff;border-radius:var(--border-radius-lg);padding:var(--spacing-2xl);box-shadow:var(--shadow-sm)}.intro-text{font-size:var(--font-size-lg);line-height:1.8;color:var(--text-secondary);margin-bottom:var(--spacing-xl)}.content-card p{line-height:1.8;color:var(--text-secondary);margin-bottom:var(--spacing-md)}.feature-list{display:grid;gap:var(--spacing-lg);margin-top:var(--spacing-xl)}.feature-item{display:flex;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--bg-secondary);border-radius:var(--border-radius-md);transition:transform var(--transition-base)}.feature-item:hover{transform:translate(8px)}.feature-icon{font-size:40px;flex-shrink:0}.feature-text h4{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-xs) 0}.feature-text p{margin:0;font-size:var(--font-size-base)}.timeline{position:relative;padding-left:var(--spacing-2xl)}.timeline:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(to bottom,var(--secondary-color),var(--primary-color))}.timeline-item{position:relative;margin-bottom:var(--spacing-2xl)}.timeline-item:last-child{margin-bottom:0}.timeline-marker{position:absolute;left:-44px;top:0;width:80px;padding:var(--spacing-xs) var(--spacing-sm);background:var(--secondary-color);color:#fff;border-radius:var(--border-radius-sm);font-size:var(--font-size-sm);font-weight:600;text-align:center}.timeline-content h4{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-sm) 0}.timeline-content p{margin:0;color:var(--text-secondary)}.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--spacing-xl)}.contact-item{text-align:center;padding:var(--spacing-xl);background:var(--bg-secondary);border-radius:var(--border-radius-lg);transition:all var(--transition-base)}.contact-item:hover{transform:translateY(-8px);box-shadow:var(--shadow-md)}.contact-icon{font-size:48px;margin-bottom:var(--spacing-md)}.contact-item h4{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-sm) 0}.contact-item p{margin:0;font-size:var(--font-size-base);color:var(--text-secondary)}.service-channels{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-xl);margin-top:var(--spacing-xl)}.channel-card{text-align:center;padding:var(--spacing-xl);background:var(--bg-secondary);border-radius:var(--border-radius-lg);border:2px solid transparent;transition:all var(--transition-base)}.channel-card:hover{border-color:var(--secondary-color);box-shadow:var(--shadow-md)}.channel-icon{font-size:56px;margin-bottom:var(--spacing-md)}.channel-card h4{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-md) 0}.channel-card p{font-size:var(--font-size-base);color:var(--text-secondary);margin:var(--spacing-xs) 0}.channel-card .btn{margin-top:var(--spacing-md)}.faq-list{display:flex;flex-direction:column;gap:var(--spacing-lg)}.faq-item{padding:var(--spacing-lg);background:var(--bg-secondary);border-radius:var(--border-radius-md);border-left:4px solid var(--secondary-color)}.faq-question{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-sm) 0}.faq-answer{margin:0;line-height:1.8;color:var(--text-secondary)}.guide-steps{display:grid;gap:var(--spacing-lg);margin-bottom:var(--spacing-2xl)}.step-item{display:flex;gap:var(--spacing-lg);padding:var(--spacing-lg);background:var(--bg-secondary);border-radius:var(--border-radius-lg);transition:transform var(--transition-base)}.step-item:hover{transform:translate(8px)}.step-number{flex-shrink:0;width:56px;height:56px;background:linear-gradient(135deg,var(--secondary-color),var(--primary-color));color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-2xl);font-weight:700}.step-content h4{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-xs) 0}.step-content p{margin:0;color:var(--text-secondary)}.tips-box{padding:var(--spacing-xl);background:linear-gradient(135deg,#fff5e6,#ffe6cc);border-radius:var(--border-radius-lg);border-left:4px solid var(--warning-color)}.tips-box h4{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-md) 0}.tips-list{list-style:none;padding:0;margin:0}.tips-list li{padding:var(--spacing-xs) 0;color:var(--text-secondary);position:relative;padding-left:var(--spacing-lg)}.tips-list li:before{content:"✓";position:absolute;left:0;color:var(--success-color);font-weight:700}.copyright-items{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-lg);margin-top:var(--spacing-xl)}.copyright-card{padding:var(--spacing-lg);background:var(--bg-secondary);border-radius:var(--border-radius-md);border-top:3px solid var(--secondary-color)}.copyright-card h4{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-sm) 0}.copyright-card p{margin:0;font-size:var(--font-size-sm);line-height:1.6}.disclaimer-list{display:flex;flex-direction:column;gap:var(--spacing-lg)}.disclaimer-item{padding:var(--spacing-lg);background:var(--bg-secondary);border-radius:var(--border-radius-md);border-left:4px solid var(--warning-color)}.disclaimer-item h4{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-sm) 0}.disclaimer-item p{margin:0;line-height:1.8}.terms-sections{display:flex;flex-direction:column;gap:var(--spacing-xl);margin-top:var(--spacing-xl)}.terms-section{padding:var(--spacing-lg);background:var(--bg-secondary);border-radius:var(--border-radius-md)}.terms-section h4{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-md) 0}.terms-section p{margin:0;line-height:2;color:var(--text-secondary)}.agreement-footer{margin-top:var(--spacing-2xl);padding:var(--spacing-lg);background:var(--bg-tertiary);border-radius:var(--border-radius-md);text-align:center}.agreement-footer p{margin:0;line-height:1.8;color:var(--text-secondary)}.info-actions{display:flex;justify-content:center;gap:var(--spacing-md);margin-top:var(--spacing-2xl)}@media (max-width: 768px){.info-title{font-size:var(--font-size-2xl)}.info-subtitle{font-size:var(--font-size-base)}.content-card{padding:var(--spacing-lg)}.timeline{padding-left:var(--spacing-xl)}.timeline-marker{left:-36px;width:70px;font-size:var(--font-size-xs)}.contact-grid,.service-channels,.copyright-items{grid-template-columns:1fr}.info-actions{flex-direction:column}.info-actions .btn{width:100%}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #2c3e50;--secondary-color: #3498db;--accent-color: #e74c3c;--success-color: #27ae60;--warning-color: #f39c12;--error-color: #c0392b;--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--bg-tertiary: #ecf0f1;--text-primary: #2c3e50;--text-secondary: #7f8c8d;--text-light: #95a5a6;--border-color: #e1e8ed;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .08);--shadow-md: 0 4px 16px rgba(0, 0, 0, .12);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .16);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--spacing-3xl: 64px;--border-radius-sm: 4px;--border-radius-md: 8px;--border-radius-lg: 12px;--border-radius-xl: 16px;--font-size-xs: 12px;--font-size-sm: 14px;--font-size-base: 16px;--font-size-lg: 18px;--font-size-xl: 20px;--font-size-2xl: 24px;--font-size-3xl: 30px;--font-size-4xl: 36px;--transition-fast: .15s ease-in-out;--transition-base: .25s ease-in-out;--transition-slow: .35s ease-in-out}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:var(--text-primary);background-color:var(--bg-primary);line-height:1.5;font-size:var(--font-size-base)}h1,h2,h3,h4,h5,h6{line-height:1.2;font-weight:600;margin-bottom:var(--spacing-md)}h1{font-size:var(--font-size-4xl)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}p{line-height:1.5;margin-bottom:var(--spacing-md)}a{color:var(--secondary-color);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--primary-color)}button{cursor:pointer;border:none;background:none;font-family:inherit;font-size:inherit;transition:all var(--transition-base)}button:focus{outline:none}img{max-width:100%;height:auto;display:block}ul,ol{list-style:none}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.container-fluid{width:100%;padding:0 var(--spacing-md)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--border-radius-md);font-weight:500;transition:all var(--transition-base);cursor:pointer;border:none;font-size:var(--font-size-base)}.btn-primary{background-color:var(--secondary-color);color:#fff}.btn-primary:hover{background-color:#2980b9;transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--bg-tertiary);color:var(--text-primary)}.btn-secondary:hover{background-color:var(--border-color)}.card{background:var(--bg-primary);border-radius:var(--border-radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition-base)}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}.loading{display:flex;align-items:center;justify-content:center;min-height:400px}.spinner{width:48px;height:48px;border:4px solid var(--bg-tertiary);border-top-color:var(--secondary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.fade-in{animation:fadeIn var(--transition-slow) ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 768px){:root{--font-size-4xl: 28px;--font-size-3xl: 24px;--font-size-2xl: 20px}.container{padding:0 var(--spacing-sm)}}@media (max-width: 480px){:root{--spacing-lg: 16px;--spacing-xl: 24px;--spacing-2xl: 32px}}