.header{position:sticky;top:0;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:100;box-shadow:0 2px 8px #0000000d;transition:all .3s ease}.header.scrolled{background:#fffffffa;box-shadow:0 4px 12px #0000001a}.header-content{display:flex;align-items:center;justify-content:space-between;padding:16px 0;gap:32px}.logo{display:flex;align-items:center;gap:12px;font-size:1.5rem;font-weight:700;color:var(--primary-color);transition:var(--transition)}.logo:hover{transform:scale(1.05)}.logo-icon{font-size:2rem;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.nav{display:flex;align-items:center;gap:32px;flex:1}.nav-link{color:var(--text-primary);font-weight:500;padding:8px 0;position:relative;cursor:pointer}.nav-link:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary-color);transition:width .3s ease}.nav-link:hover:after{width:100%}.nav-dropdown{position:relative}.dropdown-menu{position:absolute;top:100%;left:0;background:#fff;border-radius:8px;box-shadow:var(--shadow-lg);padding:8px;min-width:200px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:var(--transition);max-height:400px;overflow-y:auto;display:grid;grid-template-columns:1fr;gap:4px}.nav-dropdown:hover .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-item{padding:10px 16px;border-radius:6px;transition:var(--transition);white-space:nowrap}.dropdown-item:hover{background:var(--bg-light);color:var(--primary-color);transform:translate(4px)}.search-form{display:flex;align-items:center;background:var(--bg-light);border-radius:24px;padding:8px 16px;flex:1;max-width:400px;transition:var(--transition)}.search-form:focus-within{background:#fff;box-shadow:var(--shadow-md)}.search-input{flex:1;border:none;background:transparent;outline:none;font-size:1rem;color:var(--text-primary)}.search-input::placeholder{color:var(--text-secondary)}.search-btn{font-size:1.25rem;padding:4px;display:flex;align-items:center;justify-content:center}.search-btn:hover{transform:scale(1.1)}.menu-toggle{display:none;flex-direction:column;gap:6px;padding:8px}.menu-toggle span{width:24px;height:2px;background:var(--text-primary);border-radius:2px;transition:var(--transition)}@media (max-width: 768px){.nav{position:fixed;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:24px;box-shadow:var(--shadow-lg);transform:translateY(-100%);opacity:0;visibility:hidden;transition:var(--transition)}.nav.open{transform:translateY(0);opacity:1;visibility:visible}.nav-link{padding:12px 0}.dropdown-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;margin-top:8px}.search-form{max-width:100%;width:100%}.menu-toggle{display:flex}.menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(8px,8px)}.menu-toggle.active span:nth-child(2){opacity:0}.menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(8px,-8px)}}.footer{background:linear-gradient(135deg,#2d3748,#1a202c);color:#fff;padding:64px 0 24px;margin-top:80px}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:48px;margin-bottom:48px}.footer-section h3{color:var(--secondary-color);font-size:1.25rem;margin-bottom:20px;font-weight:600}.footer-section p{color:#cbd5e0;line-height:1.8;margin-bottom:20px}.footer-links{list-style:none}.footer-links li{margin-bottom:12px}.footer-links a{color:#cbd5e0;transition:var(--transition);display:inline-block}.footer-links a:hover{color:var(--secondary-color);transform:translate(4px)}.social-links{display:flex;gap:16px;margin-top:20px}.social-link{width:40px;height:40px;background:#ffffff1a;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.25rem;transition:var(--transition)}.social-link:hover{background:var(--primary-color);transform:translateY(-4px)}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;color:#a0aec0}.footer-bottom p{margin:8px 0;font-size:.9rem}@media (max-width: 768px){.footer{padding:48px 0 24px}.footer-content{grid-template-columns:1fr;gap:32px}.footer-section{text-align:center}.footer-links a{display:block;padding:8px 0}.social-links{justify-content:center}}.home-page{animation:fadeIn .6s ease-out}.hero-section{position:relative;height:500px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#ff8c42,#ffd166,#06bcc1);overflow:hidden;margin-bottom:80px}.hero-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><path d="M0,300 Q300,200 600,300 T1200,300 L1200,600 L0,600 Z" fill="rgba(255,255,255,0.1)"/></svg>') no-repeat center;background-size:cover;opacity:.3}.hero-content{position:relative;text-align:center;color:#fff;z-index:1}.hero-title{font-size:4rem;font-weight:800;margin-bottom:24px;text-shadow:0 4px 12px rgba(0,0,0,.2);display:flex;align-items:center;justify-content:center;gap:20px}.hero-icon{font-size:5rem;animation:float 3s ease-in-out infinite}.hero-subtitle{font-size:1.5rem;margin-bottom:40px;opacity:.95;font-weight:300}.hero-stats{display:flex;gap:64px;justify-content:center}.stat-item{display:flex;flex-direction:column;gap:8px}.stat-number{font-size:2.5rem;font-weight:700}.stat-label{font-size:1rem;opacity:.9}.section-title{font-size:2rem;margin-bottom:40px;display:flex;align-items:center;gap:12px;color:var(--text-primary)}.featured-section{margin-bottom:80px}.featured-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:32px}.featured-card{background:var(--bg-white);border-radius:var(--border-radius);overflow:hidden;box-shadow:var(--shadow-md);transition:var(--transition)}.featured-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}.featured-image{position:relative;aspect-ratio:16/9;overflow:hidden}.featured-image img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}.featured-card:hover .featured-image img{transform:scale(1.1)}.featured-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;opacity:0;transition:var(--transition)}.featured-card:hover .featured-overlay{opacity:1}.play-icon{width:64px;height:64px;background:#ffffffe6;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:var(--primary-color);transform:scale(.8);transition:var(--transition)}.featured-card:hover .play-icon{transform:scale(1)}.featured-info{padding:24px}.featured-info h3{font-size:1.25rem;margin-bottom:12px;color:var(--text-primary)}.featured-info p{color:var(--text-secondary);line-height:1.6;margin-bottom:16px}.video-meta{display:flex;align-items:center;gap:16px;font-size:.875rem;color:var(--text-secondary)}.meta-category{background:var(--primary-color);color:#fff;padding:4px 12px;border-radius:12px;font-size:.75rem;font-weight:500}.categories-section{background:linear-gradient(135deg,#f7fafc,#edf2f7);padding:80px 0;margin-bottom:80px}.categories-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px}.category-card{background:#fff;padding:32px 24px;border-radius:var(--border-radius);text-align:center;transition:var(--transition);display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow-sm);border:2px solid transparent}.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--category-color)}.category-icon{font-size:3rem}.category-name{font-size:1.125rem;font-weight:600;color:var(--text-primary)}.category-count{font-size:.875rem;color:var(--text-secondary)}.trending-section{margin-bottom:80px}.trending-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}.trending-item{display:flex;gap:16px;align-items:center;background:var(--bg-white);padding:16px;border-radius:var(--border-radius);box-shadow:var(--shadow-sm);transition:var(--transition)}.trending-item:hover{box-shadow:var(--shadow-md);transform:translate(8px)}.trending-rank{font-size:2rem;font-weight:800;color:var(--primary-color);min-width:48px;text-align:center}.trending-rank[data-rank="1"]{color:gold}.trending-rank[data-rank="2"]{color:silver}.trending-rank[data-rank="3"]{color:#cd7f32}.trending-thumbnail{width:120px;height:68px;border-radius:8px;overflow:hidden;flex-shrink:0}.trending-thumbnail img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}.trending-item:hover .trending-thumbnail img{transform:scale(1.1)}.trending-info{flex:1;min-width:0}.trending-info h4{font-size:1rem;margin-bottom:8px;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.trending-meta{display:flex;gap:8px;font-size:.875rem;color:var(--text-secondary)}.latest-section{margin-bottom:80px}.latest-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.play-button{width:48px;height:48px;background:#ffffffe6;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.25rem;color:var(--primary-color);transform:scale(.8);transition:var(--transition)}.video-card:hover .play-button{transform:scale(1)}@media (max-width: 768px){.hero-section{height:400px;margin-bottom:48px}.hero-title{font-size:2.5rem;flex-direction:column;gap:12px}.hero-icon{font-size:3rem}.hero-subtitle{font-size:1.125rem}.hero-stats{gap:32px;flex-wrap:wrap}.stat-number{font-size:1.75rem}.section-title{font-size:1.5rem}.featured-grid{grid-template-columns:1fr}.categories-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.trending-list{grid-template-columns:1fr}.latest-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}}.hls-player{position:relative;width:100%;background:#000;border-radius:var(--border-radius);overflow:hidden;box-shadow:var(--shadow-lg)}.video-element{width:100%;height:auto;display:block;max-height:80vh;object-fit:contain}.video-element:focus{outline:none}@media (max-width: 768px){.hls-player{border-radius:8px}.video-element{max-height:60vh}}.video-detail-page{padding:40px 0;animation:fadeIn .6s ease-out}.video-player-section{margin-bottom:32px}.video-content{background:var(--bg-white);border-radius:var(--border-radius);padding:32px;box-shadow:var(--shadow-md);margin-bottom:48px}.video-main h1.video-title{font-size:2rem;color:var(--text-primary);margin-bottom:24px;line-height:1.3}.video-stats{display:flex;gap:32px;padding-bottom:24px;border-bottom:2px solid var(--bg-light);margin-bottom:24px;flex-wrap:wrap}.stat{display:flex;align-items:center;gap:8px;font-size:1rem;color:var(--text-secondary)}.stat-icon{font-size:1.25rem}.video-tags{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px}.tag{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;padding:6px 16px;border-radius:20px;font-size:.875rem;font-weight:500;transition:var(--transition)}.tag:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.video-section{margin-bottom:32px}.video-section h2{font-size:1.5rem;color:var(--text-primary);margin-bottom:16px;display:flex;align-items:center;gap:12px}.video-section h2:before{content:"";width:4px;height:24px;background:linear-gradient(135deg,var(--primary-color),var(--accent-color));border-radius:2px}.video-description{font-size:1.125rem;line-height:1.8;color:var(--text-secondary)}.video-review{background:var(--bg-light);padding:24px;border-radius:12px;border-left:4px solid var(--primary-color)}.video-review p{font-size:1rem;line-height:1.8;color:var(--text-primary);text-indent:2em}.category-badge{display:inline-flex;align-items:center;background:linear-gradient(135deg,var(--primary-color),var(--accent-color));color:#fff;padding:12px 24px;border-radius:24px;font-weight:600;font-size:1rem;transition:var(--transition)}.category-badge:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.related-section{margin-top:64px}.section-title{font-size:2rem;margin-bottom:32px;display:flex;align-items:center;gap:12px;color:var(--text-primary)}.title-icon{font-size:2rem}.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.related-card{cursor:pointer}.related-thumbnail{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-light)}.related-thumbnail img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}.related-card:hover .related-thumbnail img{transform:scale(1.1)}.related-card:hover .video-overlay{opacity:1}.related-info{padding:16px}.related-info h3{font-size:1rem;margin-bottom:8px;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.related-meta{display:flex;gap:8px;font-size:.875rem;color:var(--text-secondary);align-items:center}@media (max-width: 768px){.video-detail-page{padding:24px 0}.video-content{padding:24px 16px}.video-main h1.video-title{font-size:1.5rem}.video-stats{gap:16px}.related-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}}.category-page{animation:fadeIn .6s ease-out}.category-header{background:linear-gradient(135deg,#ff8c42,#06bcc1);padding:80px 0 40px;margin-bottom:48px;color:#fff;text-align:center}.category-controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px;padding:24px;background:var(--bg-white);border-radius:var(--border-radius);box-shadow:var(--shadow-sm)}.sort-buttons{display:flex;gap:16px}.sort-btn{padding:12px 24px;border-radius:24px;background:var(--bg-light);color:var(--text-primary);font-weight:500;font-size:1rem;transition:var(--transition)}.sort-btn:hover{background:var(--primary-color);color:#fff;transform:translateY(-2px)}.sort-btn.active{background:linear-gradient(135deg,var(--primary-color),var(--accent-color));color:#fff;box-shadow:var(--shadow-md)}.videos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;margin-bottom:48px}.video-card{cursor:pointer}.video-thumbnail{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-light)}.video-thumbnail img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}.video-card:hover .video-thumbnail img{transform:scale(1.1)}.video-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;opacity:0;transition:var(--transition)}.video-card:hover .video-overlay{opacity:1}.play-button{width:48px;height:48px;background:#ffffffe6;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.25rem;color:var(--primary-color);padding-left:4px}.video-info{padding:16px}.video-title{font-size:1rem;margin-bottom:8px;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.video-description{font-size:.875rem;color:var(--text-secondary);margin-bottom:12px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.5}.video-meta{display:flex;gap:12px;font-size:.875rem;color:var(--text-secondary);flex-wrap:wrap}.empty-icon{font-size:5rem;display:block;margin-bottom:24px}.empty-state p{font-size:1.25rem}@media (max-width: 768px){.category-header{padding:48px 0 24px}.page-title{font-size:2rem}.category-controls{flex-direction:column;gap:16px}.sort-buttons{width:100%;justify-content:center}.videos-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}}.search-page{animation:fadeIn .6s ease-out;min-height:70vh}.search-header{background:linear-gradient(135deg,#06bcc1,#ff8c42);padding:64px 0 32px;margin-bottom:48px;color:#fff;text-align:center}.page-title{font-size:2.5rem;margin-bottom:16px;text-shadow:0 4px 12px rgba(0,0,0,.2)}.search-query{font-size:1.5rem;margin-bottom:12px;opacity:.95}.search-count{font-size:1.125rem;opacity:.9}.search-results{display:flex;flex-direction:column;gap:24px;margin-bottom:48px}.search-result-card{display:flex;gap:24px;background:var(--bg-white);border-radius:var(--border-radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition)}.search-result-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}.result-thumbnail{position:relative;width:320px;flex-shrink:0;aspect-ratio:16/9;overflow:hidden;background:var(--bg-light)}.result-thumbnail img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}.search-result-card:hover .result-thumbnail img{transform:scale(1.1)}.video-duration{position:absolute;bottom:12px;right:12px;background:#000c;color:#fff;padding:4px 8px;border-radius:4px;font-size:.875rem;font-weight:500}.result-info{flex:1;padding:24px;display:flex;flex-direction:column;gap:12px;min-width:0}.result-title{font-size:1.5rem;color:var(--text-primary);margin:0;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.result-description{font-size:1rem;color:var(--text-secondary);line-height:1.6;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical}.result-meta{display:flex;gap:16px;align-items:center;flex-wrap:wrap;font-size:.875rem;color:var(--text-secondary)}.meta-badge{background:var(--primary-color);color:#fff;padding:4px 12px;border-radius:12px;font-weight:500}.meta-item{display:inline-flex;align-items:center;gap:4px}.result-tags{display:flex;gap:8px;flex-wrap:wrap}.result-tag{color:var(--accent-color);font-size:.875rem;font-weight:500}.empty-state{text-align:center;padding:80px 24px;color:var(--text-secondary)}.empty-icon{font-size:6rem;display:block;margin-bottom:24px;opacity:.5}.empty-title{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin-bottom:12px}.empty-subtitle{font-size:1.125rem}@media (max-width: 768px){.search-header{padding:48px 0 24px}.page-title{font-size:2rem}.search-query{font-size:1.25rem}.search-result-card{flex-direction:column;gap:0}.result-thumbnail{width:100%}.result-info{padding:16px}.result-title{font-size:1.25rem}}.info-page{animation:fadeIn .6s ease-out}.info-header{background:linear-gradient(135deg,#073b4c,#118ab2,#06bcc1);padding:80px 0 40px;margin-bottom:48px;color:#fff;text-align:center}.page-title{font-size:3rem;margin-bottom:16px;text-shadow:0 4px 12px rgba(0,0,0,.2)}.page-subtitle{font-size:1.25rem;opacity:.95}.info-content{max-width:900px;margin:0 auto;padding-bottom:64px}.info-section{background:var(--bg-white);border-radius:var(--border-radius);padding:40px;margin-bottom:32px;box-shadow:var(--shadow-md)}.info-section h2{font-size:2rem;color:var(--text-primary);margin-bottom:24px;padding-bottom:16px;border-bottom:3px solid var(--primary-color);display:flex;align-items:center;gap:12px}.info-section h3{font-size:1.5rem;color:var(--text-primary);margin:24px 0 16px}.info-section p{font-size:1.0625rem;line-height:1.8;color:var(--text-secondary);margin-bottom:16px;text-align:justify}.info-section ul{margin-left:24px;margin-bottom:16px}.info-section li{font-size:1.0625rem;line-height:1.8;color:var(--text-secondary);margin-bottom:8px}.mission-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;margin-top:32px}.mission-card{text-align:center;padding:32px 24px;background:var(--bg-light);border-radius:12px;transition:var(--transition)}.mission-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}.mission-icon{font-size:3rem;margin-bottom:16px;display:block}.mission-card h3{font-size:1.25rem;margin:0 0 12px;color:var(--text-primary)}.mission-card p{font-size:.9375rem;margin:0;color:var(--text-secondary)}.timeline{margin-top:32px;position:relative;padding-left:40px}.timeline:before{content:"";position:absolute;left:15px;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--primary-color),var(--accent-color))}.timeline-item{position:relative;margin-bottom:32px;padding-left:32px}.timeline-item:before{content:"";position:absolute;left:-32px;top:8px;width:16px;height:16px;border-radius:50%;background:var(--primary-color);border:3px solid white;box-shadow:0 0 0 3px var(--bg-light)}.timeline-date{font-size:.875rem;color:var(--primary-color);font-weight:600;margin-bottom:8px}.timeline-content h3{font-size:1.25rem;margin:0 0 8px;color:var(--text-primary)}.timeline-content p{margin:0;font-size:1rem}.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;margin-top:32px}.contact-item{text-align:center;padding:24px;background:var(--bg-light);border-radius:12px;transition:var(--transition)}.contact-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.contact-icon{font-size:2.5rem;margin-bottom:12px;display:block}.contact-item h3{font-size:1.125rem;margin:0 0 8px;color:var(--text-primary)}.contact-item p{font-size:.9375rem;margin:4px 0;color:var(--text-secondary)}.contact-desc{font-size:.8125rem!important;color:var(--text-secondary)!important;opacity:.8}.faq-item{margin-bottom:32px;padding:24px;background:var(--bg-light);border-radius:12px;border-left:4px solid var(--primary-color)}.faq-item h3{font-size:1.25rem;margin:0 0 12px;color:var(--text-primary)}.faq-item p{margin:0 0 12px}.faq-item ul{margin:12px 0 0 24px}.guide-section{margin-top:32px;padding:24px;background:var(--bg-light);border-radius:12px}.guide-section h3{font-size:1.5rem;margin:0 0 20px;color:var(--text-primary)}.steps{display:flex;flex-direction:column;gap:24px;margin-top:20px}.step-item{display:flex;gap:20px;align-items:flex-start}.step-number{width:48px;height:48px;background:linear-gradient(135deg,var(--primary-color),var(--accent-color));color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;flex-shrink:0}.step-content h4{font-size:1.125rem;margin:0 0 8px;color:var(--text-primary)}.step-content p{margin:0;font-size:1rem}.tips-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;margin-top:24px}.tip-card{text-align:center;padding:24px;background:var(--bg-light);border-radius:12px;transition:var(--transition)}.tip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.tip-icon{font-size:2.5rem;margin-bottom:12px;display:block}.tip-card h3{font-size:1.125rem;margin:0 0 8px;color:var(--text-primary)}.tip-card p{font-size:.9375rem;margin:0;color:var(--text-secondary)}.copyright-item,.disclaimer-item,.terms-item{margin-bottom:32px;padding:24px;background:var(--bg-light);border-radius:12px;border-left:4px solid var(--accent-color)}.copyright-item h3,.disclaimer-item h3,.terms-item h3{font-size:1.25rem;margin:0 0 12px;color:var(--text-primary)}.copyright-item p,.disclaimer-item p,.terms-item p{margin:0 0 12px}.copyright-item ul,.disclaimer-item ul,.terms-item ul{margin:12px 0 0 24px}.contact-box{background:var(--bg-light);padding:24px;border-radius:12px;margin-top:24px}.contact-row{display:flex;gap:12px;margin-bottom:12px;font-size:1.0625rem;line-height:1.8}.contact-row:last-child{margin-bottom:0}.contact-row strong{color:var(--text-primary);min-width:120px}.contact-row span{color:var(--text-secondary)}.highlight-box{background:linear-gradient(135deg,#ff8c421a,#06bcc11a);padding:32px;border-radius:12px;border:2px solid var(--primary-color);margin-top:32px}.highlight-box h3{font-size:1.5rem;margin:0 0 16px;color:var(--text-primary)}.highlight-box p{margin:0 0 12px;font-size:1.0625rem}.highlight-box p:last-child{margin-bottom:0;font-weight:600;color:var(--primary-color)}@media (max-width: 768px){.info-header{padding:48px 0 24px}.page-title{font-size:2rem}.info-section{padding:24px 20px}.info-section h2{font-size:1.5rem}.mission-grid,.contact-grid,.tips-grid{grid-template-columns:1fr}.timeline{padding-left:32px}.timeline-item{padding-left:24px}.contact-row{flex-direction:column;gap:4px}.contact-row strong{min-width:auto}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #ff8c42;--secondary-color: #ffd166;--accent-color: #06bcc1;--text-primary: #2d3748;--text-secondary: #718096;--bg-light: #f7fafc;--bg-white: #ffffff;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .05);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .15);--border-radius: 12px;--transition: all .3s cubic-bezier(.4, 0, .2, 1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.6;color:var(--text-primary);background-color:var(--bg-light);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{line-height:1.2;font-weight:600;margin-bottom:1rem}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}a{text-decoration:none;color:inherit;transition:var(--transition)}img{max-width:100%;height:auto;display:block}button{cursor:pointer;border:none;background:none;font-family:inherit;transition:var(--transition)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.app{min-height:100vh;display:flex;flex-direction:column}main{flex:1}.btn{padding:12px 24px;border-radius:8px;font-weight:500;font-size:1rem;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.card{background:var(--bg-white);border-radius:var(--border-radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition)}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}@media (max-width: 768px){h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}.container{padding:0 16px}}.loading{display:flex;justify-content:center;align-items:center;min-height:400px}.loading-spinner{width:48px;height:48px;border:4px solid var(--bg-light);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .6s ease-out}.back-to-top{position:fixed;bottom:32px;right:32px;width:48px;height:48px;background:var(--primary-color);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:var(--transition);z-index:1000}.back-to-top.show{opacity:1;pointer-events:auto}.back-to-top:hover{transform:translateY(-4px);background:var(--accent-color)}