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.video-title{font-size:1.1rem}}@media(max-width:640px){.play-icon{width:50px;height:50px;font-size:1.2rem}.video-info{padding:var(--spacing-sm)}.video-title{font-size:1rem}.video-description{font-size:.85rem}}.home{min-height:100vh}.hero-section{position:relative;height:600px;display:flex;align-items:center;overflow:hidden;margin-bottom:var(--spacing-3xl)}.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:blur(8px);transform:scale(1.1)}.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,#8b4513e6,#d2691ed9)}.hero-content{position:relative;z-index:1;color:#fff;max-width:700px;animation:fadeIn 1s ease-out}.hero-badge{display:inline-block;background:#fff3;padding:6px 16px;border-radius:var(--border-radius-lg);font-size:.9rem;font-weight:500;margin-bottom:var(--spacing-md);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.hero-title{font-size:3rem;margin-bottom:var(--spacing-md);line-height:1.2;text-shadow:0 2px 8px 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.section-title:after{margin-left:0}.view-more{color:var(--color-primary);font-weight:500;transition:all var(--transition-fast);white-space:nowrap}.view-more:hover{color:var(--color-hover);transform:translate(4px)}.trending-section{background:linear-gradient(180deg,#fff,#fff8f0)}.trending-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(500px,1fr));gap:var(--spacing-xl)}.trending-item{position:relative;display:flex;gap:var(--spacing-md)}.trending-rank{font-size:3rem;font-weight:700;color:var(--color-primary);line-height:1;min-width:60px;text-align:center;align-self:center;text-shadow:2px 2px 4px rgba(0,0,0,.1)}.trending-item:nth-child(1) .trending-rank{color:gold}.trending-item:nth-child(2) .trending-rank{color:silver}.trending-item:nth-child(3) 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span:first-child{font-size:1.3rem}.video-info-section{background:var(--color-surface);padding:var(--spacing-xl);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:var(--spacing-xl)}.info-header{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:var(--spacing-md)}.category-badge{display:inline-flex;padding:8px 20px;background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-secondary) 100%);color:#fff;border-radius:var(--border-radius-lg);font-weight:500;font-size:.95rem}.video-tags{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.video-tags .tag{padding:6px 14px;background:#8b45131a;color:var(--color-primary);border-radius:var(--border-radius-md);font-size:.9rem;transition:all var(--transition-fast)}.video-tags .tag:hover{background:var(--color-primary);color:#fff}.video-description h3,.video-review h3{font-size:1.3rem;margin-bottom:var(--spacing-md);color:var(--color-text)}.video-description p{line-height:1.8;color:var(--color-text-light);font-size:1rem}.review-text{line-height:1.9;color:var(--color-text);font-size:1rem;text-align:justify;text-indent:2em}.video-sidebar{display:flex;flex-direction:column;gap:var(--spacing-md)}.sidebar-title{font-size:1.3rem;padding:var(--spacing-md) 0;border-bottom:2px solid var(--color-primary)}.related-videos{display:flex;flex-direction:column;gap:var(--spacing-md)}.related-video-card{display:flex;gap:var(--spacing-md);background:var(--color-surface);border-radius:var(--border-radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition-fast)}.related-video-card:hover{box-shadow:var(--shadow-md);transform:translate(-4px)}.related-thumbnail{position:relative;width:160px;height:90px;flex-shrink:0;background:linear-gradient(135deg,#d2691e,#8b4513)}.related-thumbnail img{width:100%;height:100%;object-fit:cover}.related-duration{position:absolute;bottom:4px;right:4px;background:#000c;color:#fff;padding:2px 6px;border-radius:var(--border-radius-sm);font-size:.75rem}.related-info{flex:1;padding:var(--spacing-sm);display:flex;flex-direction:column;justify-content:space-between;min-width:0}.related-title{font-size:.95rem;line-height:1.4;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--color-text)}.related-meta{display:flex;gap:var(--spacing-sm);font-size:.8rem;color:var(--color-text-light)}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;gap:var(--spacing-lg)}@media(max-width:1200px){.video-layout{grid-template-columns:1fr}.video-sidebar{order:2}.related-videos{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--spacing-md)}}@media(max-width:768px){.video-detail{padding:var(--spacing-md) 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0;min-height:100vh}.page-header{text-align:center;margin-bottom:var(--spacing-3xl)}.page-title{font-size:2.5rem;margin-bottom:var(--spacing-md);color:var(--color-text)}.page-subtitle{font-size:1.1rem;color:var(--color-text-light)}.category-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-3xl)}.category-item{background:var(--color-surface);border-radius:var(--border-radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm);transition:all var(--transition-normal);display:flex;flex-direction:column;gap:var(--spacing-md)}.category-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px)}.category-item-header{display:flex;justify-content:space-between;align-items:center}.category-item-header h3{font-size:1.3rem;color:var(--color-text);margin:0}.category-item-count{font-size:.9rem;color:var(--color-text-light);background:#8b45131a;padding:4px 12px;border-radius:var(--border-radius-md)}.category-item-preview{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-sm)}.preview-thumbnail{aspect-ratio:16 / 9;border-radius:var(--border-radius-md);overflow:hidden;background:linear-gradient(135deg,#d2691e,#8b4513)}.preview-thumbnail img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-normal)}.category-item:hover .preview-thumbnail img{transform:scale(1.1)}.filter-bar{background:var(--color-surface);padding:var(--spacing-lg);border-radius:var(--border-radius-lg);margin-bottom:var(--spacing-xl);box-shadow:var(--shadow-sm)}.filter-group{display:flex;align-items:center;gap:var(--spacing-md);flex-wrap:wrap}.filter-group label{font-weight:500;color:var(--color-text)}.filter-buttons{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.filter-btn{padding:8px 20px;background:var(--color-background);color:var(--color-text);border-radius:var(--border-radius-md);font-size:.95rem;transition:all var(--transition-fast)}.filter-btn:hover{background:var(--color-primary);color:#fff}.filter-btn.active{background:var(--color-primary);color:#fff;font-weight:500}.videos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg)}.empty-state{text-align:center;padding:var(--spacing-3xl);color:var(--color-text-light);font-size:1.1rem}@media(max-width:768px){.page-title{font-size:2rem}.category-list{grid-template-columns:1fr}.filter-group{flex-direction:column;align-items:flex-start}.filter-buttons{width:100%}.filter-btn{flex:1}}.info-page{padding:var(--spacing-3xl) 0;min-height:100vh;background:linear-gradient(180deg,#fff8f0,#fff,#fff8f0)}.info-content{max-width:900px;margin:0 auto;background:var(--color-surface);padding:var(--spacing-3xl);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-md)}.info-content h1{font-size:2.5rem;margin-bottom:var(--spacing-2xl);color:var(--color-primary);text-align:center;padding-bottom:var(--spacing-lg);border-bottom:3px solid var(--color-primary)}.info-section{margin:var(--spacing-3xl) 0}.info-section h2{font-size:1.8rem;margin-bottom:var(--spacing-lg);color:var(--color-text);position:relative;padding-left:var(--spacing-md)}.info-section h2:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:24px;background:var(--color-primary);border-radius:2px}.info-section h3{font-size:1.3rem;margin-bottom:var(--spacing-md);color:var(--color-text)}.info-section p{line-height:1.9;color:var(--color-text);margin-bottom:var(--spacing-md);text-align:justify}.info-section ul,.info-section ol{margin-left:var(--spacing-xl);margin-bottom:var(--spacing-md)}.info-section li{line-height:1.9;margin-bottom:var(--spacing-sm);color:var(--color-text)}.timeline{display:flex;flex-direction:column;gap:var(--spacing-xl);margin-top:var(--spacing-xl);position:relative;padding-left:var(--spacing-xl)}.timeline:before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--color-primary) 0%,var(--color-secondary) 100%)}.timeline-item{position:relative;display:flex;gap:var(--spacing-lg)}.timeline-item:before{content:"";position:absolute;left:-33px;top:5px;width:12px;height:12px;background:var(--color-primary);border-radius:50%;border:3px solid var(--color-background);box-shadow:0 0 0 2px var(--color-primary)}.timeline-date{font-weight:600;color:var(--color-primary);min-width:80px;flex-shrink:0}.timeline-content h3{margin-bottom:var(--spacing-xs);font-size:1.1rem}.timeline-content p{margin-bottom:0;color:var(--color-text-light)}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg);margin-top:var(--spacing-xl)}.contact-grid.large{grid-template-columns:repeat(3,1fr)}.contact-item{display:flex;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--color-background);border-radius:var(--border-radius-lg);transition:all var(--transition-fast)}.contact-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.contact-icon{font-size:2rem;flex-shrink:0}.contact-item h4{margin-bottom:var(--spacing-xs);color:var(--color-text);font-size:1rem}.contact-item p{margin:0;color:var(--color-text-light);font-size:.95rem}.contact-card{background:var(--color-background);padding:var(--spacing-xl);border-radius:var(--border-radius-lg);text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--spacing-sm);box-shadow:var(--shadow-sm);transition:all var(--transition-fast)}.contact-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}.contact-card-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.contact-card h3{font-size:1.4rem;margin-bottom:var(--spacing-sm)}.contact-card a{font-size:1.2rem;font-weight:600;color:var(--color-primary)}.contact-note{font-size:.85rem;color:var(--color-text-light);margin-top:var(--spacing-xs)}.help-list,.faq-list{display:flex;flex-direction:column;gap:var(--spacing-lg);margin-top:var(--spacing-xl)}.help-item{background:var(--color-background);padding:var(--spacing-lg);border-radius:var(--border-radius-lg);border-left:4px solid var(--color-primary)}.help-item h3{margin-bottom:var(--spacing-md);font-size:1.1rem}.help-item p{margin:0;color:var(--color-text-light)}.faq-item{background:var(--color-background);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--border-radius-lg);cursor:pointer;transition:all var(--transition-fast)}.faq-item:hover{box-shadow:var(--shadow-sm)}.faq-item summary{font-weight:600;font-size:1.05rem;color:var(--color-text);cursor:pointer;-webkit-user-select:none;user-select:none;list-style:none;display:flex;align-items:center;gap:var(--spacing-sm)}.faq-item summary:before{content:"▶";color:var(--color-primary);transition:transform var(--transition-fast)}.faq-item[open] summary:before{transform:rotate(90deg)}.faq-item p{margin-top:var(--spacing-md);padding-left:var(--spacing-lg);color:var(--color-text-light)}.feedback-types{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg);margin-top:var(--spacing-xl)}.feedback-type-card{background:var(--color-background);padding:var(--spacing-xl);border-radius:var(--border-radius-lg);text-align:center;transition:all var(--transition-fast)}.feedback-type-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}.feedback-icon{font-size:3rem;display:block;margin-bottom:var(--spacing-md)}.feedback-type-card h3{margin-bottom:var(--spacing-sm);font-size:1.2rem}.feedback-type-card p{margin:0;font-size:.9rem;color:var(--color-text-light)}.contact-methods{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-lg);margin-top:var(--spacing-xl)}.contact-method{background:var(--color-background);padding:var(--spacing-lg);border-radius:var(--border-radius-lg);text-align:center}.contact-method strong{display:block;margin-bottom:var(--spacing-sm);color:var(--color-text);font-size:1.05rem}.contact-method p{margin:0;color:var(--color-text-light)}.process-list{background:var(--color-background);padding:var(--spacing-xl);border-radius:var(--border-radius-lg);counter-reset:process}.process-list li{position:relative;padding-left:var(--spacing-3xl);margin-bottom:var(--spacing-xl)}.process-list li:before{counter-increment:process;content:counter(process);position:absolute;left:0;top:0;width:32px;height:32px;background:var(--color-primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600}.process-list li:last-child{margin-bottom:0}@media(max-width:768px){.info-content{padding:var(--spacing-xl) var(--spacing-md)}.info-content h1{font-size:2rem}.info-section h2{font-size:1.5rem}.timeline{padding-left:var(--spacing-md)}.timeline-item{flex-direction:column;gap:var(--spacing-sm)}.timeline-date{min-width:auto}.contact-grid,.contact-grid.large,.feedback-types,.contact-methods{grid-template-columns:1fr}}*{margin:0;padding:0;box-sizing:border-box}:root{--color-primary: #8B4513;--color-secondary: #D2691E;--color-accent: #CD853F;--color-background: #FFF8F0;--color-surface: #FFFFFF;--color-text: #2C1810;--color-text-light: #5D4037;--color-border: #E0D5C7;--color-hover: #A0522D;--color-success: #4CAF50;--color-error: #F44336;--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: 16px;--transition-fast: .2s ease;--transition-normal: .3s ease;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .1);--shadow-md: 0 4px 8px rgba(0, 0, 0, .15);--shadow-lg: 0 8px 16px rgba(0, 0, 0, .2)}body{font-family:Noto Sans SC,Microsoft YaHei,PingFang SC,sans-serif;background-color:var(--color-background);color:var(--color-text);line-height:1.6;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;color:var(--color-text)}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.75rem}h4{font-size:1.5rem}h5{font-size:1.25rem}h6{font-size:1rem}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-hover)}img{max-width:100%;height:auto;display:block}button{font-family:inherit;cursor:pointer;border:none;outline:none;transition:all var(--transition-fast)}input,textarea,select{font-family:inherit;outline:none}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.container-wide{max-width:1400px;margin:0 auto;padding:0 var(--spacing-md)}.section{padding:var(--spacing-3xl) 0}.btn{padding:12px 24px;border-radius:var(--border-radius-md);font-weight:500;display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);transition:all var(--transition-fast)}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--color-secondary);color:#fff}.btn-secondary:hover{opacity:.9;transform:translateY(-2px)}.card{background:var(--color-surface);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-sm);overflow:hidden;transition:all var(--transition-normal)}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}@media(max-width:768px){:root{--spacing-3xl: 32px;--spacing-2xl: 24px}h1{font-size:2rem}h2{font-size:1.75rem}h3{font-size:1.5rem}h4{font-size:1.25rem}.container,.container-wide{padding:0 var(--spacing-sm)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{transform:translate(-100%)}to{transform:translate(0)}}.fade-in{animation:fadeIn .6s ease-out}.loading{display:inline-block;width:40px;height:40px;border:4px solid var(--color-border);border-radius:50%;border-top-color:var(--color-primary);animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}