/* ================================================
   影视云创传媒 - 核心样式表
   版本: 1.0.0
   更新时间: 2025-01-07
   ================================================ */

/* CSS Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;line-height:1.6;color:#333;background:#fff;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:color .3s ease}
a:hover{color:#e63946}
img{max-width:100%;height:auto;display:block;border:0}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3}

/* Container */
.ysyc-container{width:100%;max-width:1200px;margin:0 auto;padding:0 15px}
.ysyc-row{display:flex;flex-wrap:wrap;margin:0 -15px}
.ysyc-col{padding:0 15px}
.ysyc-col-12{width:100%}
.ysyc-col-6{width:50%}
.ysyc-col-4{width:33.333%}
.ysyc-col-3{width:25%}

/* Header */
.ysyc-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(255,255,255,.98);box-shadow:0 2px 10px rgba(0,0,0,.08);transition:all .3s ease}
.ysyc-header-inner{display:flex;align-items:center;justify-content:space-between;height:80px}
.ysyc-logo{display:flex;align-items:center}
.ysyc-logo-text{font-size:24px;font-weight:700;color:#1a1a2e}
.ysyc-logo-text span{color:#e63946}

/* Navigation */
.ysyc-nav{display:flex;align-items:center}
.ysyc-nav-list{display:flex;gap:35px}
.ysyc-nav-item{position:relative}
.ysyc-nav-link{font-size:15px;font-weight:500;color:#333;padding:10px 0;display:block;position:relative}
.ysyc-nav-link::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:#e63946;transition:width .3s ease}
.ysyc-nav-link:hover::after,.ysyc-nav-link.active::after{width:100%}
.ysyc-nav-link:hover,.ysyc-nav-link.active{color:#e63946}

/* Mobile Menu */
.ysyc-menu-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:10px}
.ysyc-menu-toggle span{width:25px;height:2px;background:#333;transition:all .3s ease}
.ysyc-mobile-nav{display:none;position:fixed;top:80px;left:0;width:100%;background:#fff;box-shadow:0 5px 15px rgba(0,0,0,.1);padding:20px 0}
.ysyc-mobile-nav.active{display:block}
.ysyc-mobile-nav .ysyc-nav-list{flex-direction:column;gap:0}
.ysyc-mobile-nav .ysyc-nav-link{padding:15px 20px;border-bottom:1px solid #eee}

/* Banner */
.ysyc-banner{position:relative;height:600px;overflow:hidden;margin-top:80px}
.ysyc-banner-slide{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;transition:opacity 1s ease;background-size:cover;background-position:center}
.ysyc-banner-slide.active{opacity:1}
.ysyc-banner-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(26,26,46,.85) 0%,rgba(230,57,70,.6) 100%)}
.ysyc-banner-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;color:#fff;padding:0 10%}
.ysyc-banner-title{font-size:48px;font-weight:700;margin-bottom:20px;text-shadow:2px 2px 4px rgba(0,0,0,.3)}
.ysyc-banner-desc{font-size:18px;max-width:600px;margin-bottom:30px;opacity:.9}
.ysyc-banner-btn{display:inline-block;padding:15px 40px;background:#e63946;color:#fff;border-radius:4px;font-weight:600;transition:all .3s ease}
.ysyc-banner-btn:hover{background:#c1121f;transform:translateY(-2px);color:#fff}
.ysyc-banner-dots{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.ysyc-banner-dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:all .3s ease}
.ysyc-banner-dot.active{background:#e63946;transform:scale(1.2)}

/* Section Common */
.ysyc-section{padding:80px 0}
.ysyc-section-header{text-align:center;margin-bottom:50px}
.ysyc-section-title{font-size:36px;color:#1a1a2e;margin-bottom:15px;position:relative;display:inline-block}
.ysyc-section-title::after{content:'';position:absolute;bottom:-10px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:#e63946}
.ysyc-section-subtitle{font-size:16px;color:#666;max-width:600px;margin:20px auto 0}
.ysyc-section-alt{background:#f8f9fa}

/* About Section */
.ysyc-about{display:flex;align-items:center;gap:60px}
.ysyc-about-img{flex:1;position:relative}
.ysyc-about-img img{border-radius:8px;box-shadow:0 20px 40px rgba(0,0,0,.15)}
.ysyc-about-img::before{content:'';position:absolute;top:-20px;left:-20px;width:100%;height:100%;border:3px solid #e63946;border-radius:8px;z-index:-1}
.ysyc-about-content{flex:1}
.ysyc-about-title{font-size:32px;color:#1a1a2e;margin-bottom:20px}
.ysyc-about-text{color:#555;margin-bottom:20px;line-height:1.8}
.ysyc-about-list{margin-bottom:25px}
.ysyc-about-list li{padding:8px 0;padding-left:25px;position:relative;color:#555}
.ysyc-about-list li::before{content:'✓';position:absolute;left:0;color:#e63946;font-weight:700}

/* Stats Section */
.ysyc-stats{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 100%);padding:60px 0}
.ysyc-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.ysyc-stat-item{text-align:center;color:#fff}
.ysyc-stat-icon{font-size:40px;margin-bottom:15px;color:#e63946}
.ysyc-stat-num{font-size:48px;font-weight:700;margin-bottom:5px}
.ysyc-stat-label{font-size:14px;opacity:.8;text-transform:uppercase;letter-spacing:1px}

/* Services Section */
.ysyc-services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.ysyc-service-card{background:#fff;border-radius:8px;padding:40px 25px;text-align:center;box-shadow:0 5px 25px rgba(0,0,0,.08);transition:all .3s ease;border:1px solid #eee}
.ysyc-service-card:hover{transform:translateY(-10px);box-shadow:0 15px 40px rgba(0,0,0,.12);border-color:#e63946}
.ysyc-service-icon{width:80px;height:80px;margin:0 auto 20px;background:linear-gradient(135deg,#e63946,#f77f00);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:32px;color:#fff}
.ysyc-service-title{font-size:20px;color:#1a1a2e;margin-bottom:15px}
.ysyc-service-desc{font-size:14px;color:#666;line-height:1.7}
.ysyc-service-link{display:inline-block;margin-top:20px;color:#e63946;font-weight:600;font-size:14px}
.ysyc-service-link:hover{color:#c1121f}

/* Works Section */
.ysyc-works-filter{display:flex;justify-content:center;gap:15px;margin-bottom:40px;flex-wrap:wrap}
.ysyc-filter-btn{padding:10px 25px;background:#f0f0f0;border:none;border-radius:25px;cursor:pointer;font-size:14px;transition:all .3s ease}
.ysyc-filter-btn:hover,.ysyc-filter-btn.active{background:#e63946;color:#fff}
.ysyc-works-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.ysyc-work-item{position:relative;border-radius:8px;overflow:hidden;aspect-ratio:16/10}
.ysyc-work-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.ysyc-work-item:hover img{transform:scale(1.1)}
.ysyc-work-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(to top,rgba(26,26,46,.9) 0%,transparent 60%);opacity:0;transition:opacity .3s ease;display:flex;flex-direction:column;justify-content:flex-end;padding:25px}
.ysyc-work-item:hover .ysyc-work-overlay{opacity:1}
.ysyc-work-title{color:#fff;font-size:18px;margin-bottom:5px}
.ysyc-work-cat{color:#e63946;font-size:13px}

/* Timeline Section */
.ysyc-timeline{position:relative;padding-left:30px}
.ysyc-timeline::before{content:'';position:absolute;left:0;top:0;width:3px;height:100%;background:#e63946}
.ysyc-timeline-item{position:relative;padding-bottom:40px;padding-left:40px}
.ysyc-timeline-item::before{content:'';position:absolute;left:-36px;top:5px;width:15px;height:15px;background:#e63946;border-radius:50%;border:3px solid #fff;box-shadow:0 0 0 3px #e63946}
.ysyc-timeline-year{font-size:14px;color:#e63946;font-weight:700;margin-bottom:8px}
.ysyc-timeline-title{font-size:18px;color:#1a1a2e;margin-bottom:8px}
.ysyc-timeline-desc{font-size:14px;color:#666;line-height:1.6}

/* News Section */
.ysyc-news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.ysyc-news-card{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 5px 20px rgba(0,0,0,.08);transition:all .3s ease}
.ysyc-news-card:hover{transform:translateY(-5px);box-shadow:0 15px 35px rgba(0,0,0,.12)}
.ysyc-news-img{height:200px;overflow:hidden}
.ysyc-news-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.ysyc-news-card:hover .ysyc-news-img img{transform:scale(1.1)}
.ysyc-news-body{padding:25px}
.ysyc-news-date{font-size:13px;color:#999;margin-bottom:10px}
.ysyc-news-title{font-size:18px;color:#1a1a2e;margin-bottom:12px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ysyc-news-title:hover{color:#e63946}
.ysyc-news-excerpt{font-size:14px;color:#666;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* Contact Section */
.ysyc-contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px}
.ysyc-contact-info h3{font-size:24px;color:#1a1a2e;margin-bottom:25px}
.ysyc-contact-item{display:flex;align-items:flex-start;gap:15px;margin-bottom:20px}
.ysyc-contact-icon{width:45px;height:45px;background:#e63946;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;flex-shrink:0}
.ysyc-contact-text h4{font-size:16px;color:#1a1a2e;margin-bottom:5px}
.ysyc-contact-text p{font-size:14px;color:#666}
.ysyc-contact-form{}
.ysyc-form-group{margin-bottom:20px}
.ysyc-form-group label{display:block;font-size:14px;color:#333;margin-bottom:8px;font-weight:500}
.ysyc-form-control{width:100%;padding:12px 15px;border:1px solid #ddd;border-radius:4px;font-size:14px;transition:border-color .3s ease}
.ysyc-form-control:focus{outline:none;border-color:#e63946}
textarea.ysyc-form-control{min-height:120px;resize:vertical}
.ysyc-submit-btn{width:100%;padding:15px;background:#e63946;color:#fff;border:none;border-radius:4px;font-size:16px;font-weight:600;cursor:pointer;transition:background .3s ease}
.ysyc-submit-btn:hover{background:#c1121f}

/* Footer */
.ysyc-footer{background:#1a1a2e;color:#fff;padding-top:60px}
.ysyc-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.ysyc-footer-brand h3{font-size:24px;margin-bottom:15px}
.ysyc-footer-brand p{font-size:14px;opacity:.7;line-height:1.8;margin-bottom:20px}
.ysyc-footer-social{display:flex;gap:12px}
.ysyc-footer-social a{width:36px;height:36px;background:rgba(255,255,255,.1);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .3s ease}
.ysyc-footer-social a:hover{background:#e63946}
.ysyc-footer-title{font-size:18px;margin-bottom:20px;position:relative;padding-bottom:10px}
.ysyc-footer-title::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:#e63946}
.ysyc-footer-links li{margin-bottom:12px}
.ysyc-footer-links a{font-size:14px;opacity:.7;transition:all .3s ease}
.ysyc-footer-links a:hover{opacity:1;color:#e63946;padding-left:5px}
.ysyc-footer-qrcode{display:flex;gap:20px}
.ysyc-qrcode-item{text-align:center}
.ysyc-qrcode-item img{width:100px;height:100px;background:#fff;border-radius:4px;margin-bottom:8px}
.ysyc-qrcode-item span{font-size:12px;opacity:.7}
.ysyc-footer-bottom{padding:20px 0;text-align:center;font-size:13px;opacity:.6}

/* Breadcrumb */
.ysyc-breadcrumb{background:#f8f9fa;padding:20px 0}
.ysyc-breadcrumb-list{display:flex;align-items:center;gap:10px;font-size:14px}
.ysyc-breadcrumb-list a{color:#666}
.ysyc-breadcrumb-list a:hover{color:#e63946}
.ysyc-breadcrumb-list span{color:#999}

/* Page Header */
.ysyc-page-header{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 100%);padding:100px 0 60px;margin-top:80px;text-align:center;color:#fff}
.ysyc-page-title{font-size:42px;margin-bottom:15px}
.ysyc-page-subtitle{font-size:16px;opacity:.8}

/* Article */
.ysyc-article{padding:60px 0}
.ysyc-article-header{margin-bottom:30px;padding-bottom:20px;border-bottom:1px solid #eee}
.ysyc-article-title{font-size:28px;color:#1a1a2e;margin-bottom:15px}
.ysyc-article-meta{display:flex;gap:20px;font-size:14px;color:#999}
.ysyc-article-content{font-size:16px;line-height:2;color:#444}
.ysyc-article-content p{margin-bottom:20px}
.ysyc-article-content h2,.ysyc-article-content h3{color:#1a1a2e;margin:30px 0 15px}
.ysyc-article-content img{border-radius:8px;margin:20px 0}

/* Pagination */
.ysyc-pagination{display:flex;justify-content:center;gap:8px;margin-top:40px}
.ysyc-pagination a,.ysyc-pagination span{padding:10px 15px;background:#f0f0f0;border-radius:4px;font-size:14px;transition:all .3s ease}
.ysyc-pagination a:hover,.ysyc-pagination span.active{background:#e63946;color:#fff}

/* Back to Top */
.ysyc-back-top{position:fixed;bottom:30px;right:30px;width:45px;height:45px;background:#e63946;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s ease;z-index:999;font-size:20px}
.ysyc-back-top.visible{opacity:1;visibility:visible}
.ysyc-back-top:hover{background:#c1121f;transform:translateY(-3px)}

/* Lazy Load */
.ysyc-lazy{opacity:0;transition:opacity .5s ease}
.ysyc-lazy.loaded{opacity:1}

/* Responsive */
@media(max-width:1024px){
.ysyc-services-grid,.ysyc-stats-grid{grid-template-columns:repeat(2,1fr)}
.ysyc-works-grid{grid-template-columns:repeat(2,1fr)}
.ysyc-footer-grid{grid-template-columns:repeat(2,1fr)}
.ysyc-about{flex-direction:column}
.ysyc-contact-grid{grid-template-columns:1fr}
}

@media(max-width:768px){
.ysyc-nav{display:none}
.ysyc-menu-toggle{display:flex}
.ysyc-banner{height:500px}
.ysyc-banner-title{font-size:32px}
.ysyc-banner-desc{font-size:15px}
.ysyc-section{padding:50px 0}
.ysyc-section-title{font-size:28px}
.ysyc-services-grid,.ysyc-news-grid{grid-template-columns:1fr}
.ysyc-works-grid{grid-template-columns:1fr}
.ysyc-stats-grid{grid-template-columns:repeat(2,1fr)}
.ysyc-stat-num{font-size:36px}
.ysyc-footer-grid{grid-template-columns:1fr}
.ysyc-col-6,.ysyc-col-4,.ysyc-col-3{width:100%}
.ysyc-page-header{padding:80px 0 40px}
.ysyc-page-title{font-size:28px}
}

@media(max-width:480px){
.ysyc-banner{height:400px}
.ysyc-banner-title{font-size:26px}
.ysyc-header-inner{height:60px}
.ysyc-logo-text{font-size:18px}
.ysyc-stats-grid{grid-template-columns:1fr 1fr}
.ysyc-stat-num{font-size:28px}
}

/* Print Styles */
@media print{
.ysyc-header,.ysyc-footer,.ysyc-back-top{display:none}
.ysyc-banner{height:auto;margin-top:0}
body{font-size:12pt}
}