/* ============================================
   校花 - 青春影视传媒互动社区 全站样式
   原创设计 | eqhmy21.cn
   ============================================ */

/* --- CSS Variables --- */
:root {
  --primary: #E84393;
  --primary-dark: #D63384;
  --secondary: #6C5CE7;
  --dark: #2D3436;
  --light: #FFF0F5;
  --accent: #FD79A8;
  --white: #FFFFFF;
  --gray-100: #F8F9FA;
  --gray-200: #E9ECEF;
  --gray-300: #DEE2E6;
  --gray-500: #ADB5BD;
  --gray-700: #495057;
  --shadow: 0 4px 20px rgba(232,67,147,0.12);
  --shadow-lg: 0 8px 40px rgba(232,67,147,0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* --- Reset & Base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;color:var(--dark);background:var(--white);line-height:1.7;overflow-x:hidden}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--secondary)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--dark)}

/* --- Container --- */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.container-fluid{max-width:1400px;margin:0 auto;padding:0 20px}

/* --- Header --- */
.site-header{background:var(--white);position:sticky;top:0;z-index:1000;box-shadow:0 2px 12px rgba(0,0,0,0.06);transition:var(--transition)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-text{font-size:1.5rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 16px;border-radius:8px;font-size:0.95rem;font-weight:500;color:var(--dark);transition:var(--transition)}
.main-nav a:hover,.main-nav a.active{background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--white)}
.mobile-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--dark);padding:8px}

/* --- Search Bar --- */
.search-bar{background:linear-gradient(135deg,var(--primary),var(--secondary));padding:14px 0}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%;background:var(--white);border-radius:50px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,0.15)}
.search-box input{flex:1;border:none;padding:12px 24px;font-size:1rem;outline:none;background:transparent;color:var(--dark)}
.search-box input::placeholder{color:var(--gray-500)}
.search-box button{background:linear-gradient(135deg,var(--primary),var(--secondary));border:none;padding:12px 28px;color:var(--white);font-size:1rem;cursor:pointer;transition:var(--transition);font-weight:600}
.search-box button:hover{opacity:0.9}

/* --- Hero Banner --- */
.hero-banner{position:relative;overflow:hidden;min-height:480px}
.hero-slider{position:relative;width:100%;min-height:480px}
.hero-slide{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;transition:opacity 0.8s ease}
.hero-slide.active{opacity:1}
.hero-slide img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(232,67,147,0.7),rgba(108,92,231,0.7));display:flex;align-items:center;justify-content:center;text-align:center}
.hero-content{max-width:700px;padding:20px;color:var(--white)}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 8px rgba(0,0,0,0.2)}
.hero-content p{font-size:1.2rem;margin-bottom:24px;opacity:0.95}
.hero-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:10}
.hero-dots span{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,0.5);cursor:pointer;transition:var(--transition)}
.hero-dots span.active{background:var(--white);transform:scale(1.2)}

/* --- Buttons --- */
.btn{display:inline-block;padding:12px 32px;border-radius:50px;font-weight:600;font-size:1rem;transition:var(--transition);cursor:pointer;border:none;text-align:center}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--white);box-shadow:0 4px 15px rgba(232,67,147,0.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(232,67,147,0.4);color:var(--white)}
.btn-outline{background:transparent;border:2px solid var(--white);color:var(--white)}
.btn-outline:hover{background:var(--white);color:var(--primary)}
.btn-sm{padding:8px 20px;font-size:0.9rem}

/* --- Section --- */
.section{padding:70px 0}
.section-alt{background:var(--light)}
.section-dark{background:var(--dark);color:var(--white)}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:2rem;margin-bottom:12px;position:relative;display:inline-block}
.section-title h2::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:2px}
.section-title p{color:var(--gray-700);font-size:1.05rem;margin-top:16px}

/* --- Breadcrumb --- */
.breadcrumb{padding:14px 0;font-size:0.9rem;color:var(--gray-700)}
.breadcrumb a{color:var(--primary)}
.breadcrumb span{margin:0 8px;color:var(--gray-500)}

/* --- Video Card --- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--white);box-shadow:var(--shadow);transition:var(--transition)}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.video-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(232,67,147,0.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:var(--transition)}
.video-card:hover .video-play{opacity:1}
.video-play::after{content:'';display:block;width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent var(--white);margin-left:3px}
.video-info{padding:14px 16px}
.video-info h4{font-size:0.95rem;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:12px;font-size:0.8rem;color:var(--gray-500)}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:2px 10px;border-radius:20px;font-size:0.75rem;background:var(--light);color:var(--primary);margin-top:6px}

/* --- Feature Grid --- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.feature-card{background:var(--white);border-radius:var(--radius-lg);padding:36px 28px;text-align:center;box-shadow:var(--shadow);transition:var(--transition)}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.feature-icon{width:72px;height:72px;margin:0 auto 20px;background:linear-gradient(135deg,var(--primary),var(--secondary));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;color:var(--white)}
.feature-card h3{font-size:1.2rem;margin-bottom:10px}
.feature-card p{color:var(--gray-700);font-size:0.95rem}

/* --- Expert Card --- */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);text-align:center}
.expert-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:24px auto 16px;overflow:hidden;border:3px solid var(--primary)}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1.05rem;margin-bottom:4px}
.expert-card .role{color:var(--primary);font-size:0.85rem;margin-bottom:12px}
.expert-card p{padding:0 16px;font-size:0.9rem;color:var(--gray-700);margin-bottom:16px}
.expert-links{display:flex;justify-content:center;gap:10px;padding-bottom:20px}

/* --- Partner Logos --- */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-wall img{height:60px;opacity:0.7;transition:var(--transition);filter:grayscale(30%)}
.partner-wall img:hover{opacity:1;filter:grayscale(0)}

/* --- FAQ --- */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--gray-200);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--primary)}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;background:var(--white);transition:var(--transition)}
.faq-question:hover{color:var(--primary)}
.faq-question .arrow{transition:transform 0.3s ease;font-size:1.2rem;color:var(--primary)}
.faq-item.open .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease;padding:0 24px}
.faq-item.open .faq-answer{max-height:300px;padding:0 24px 18px}
.faq-answer p{color:var(--gray-700);font-size:0.95rem;line-height:1.8}

/* --- Reviews --- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:var(--white);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow);transition:var(--transition)}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.review-stars{color:#FFD700;font-size:1.1rem;margin-bottom:12px}
.review-text{font-size:0.95rem;color:var(--gray-700);margin-bottom:16px;line-height:1.8;font-style:italic}
.review-author{display:flex;align-items:center;gap:10px}
.review-author .avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:700;font-size:0.9rem}
.review-author .name{font-weight:600;font-size:0.9rem}
.review-author .date{font-size:0.8rem;color:var(--gray-500)}

/* --- Contact Info --- */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:40px;align-items:start}
.contact-info-card{background:var(--white);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow)}
.contact-info-card h3{font-size:1.3rem;margin-bottom:20px;color:var(--primary)}
.contact-item{display:flex;align-items:flex-start;gap:14px;margin-bottom:18px}
.contact-icon{width:40px;height:40px;border-radius:50%;background:var(--light);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:1.1rem;flex-shrink:0}
.contact-item p{font-size:0.95rem;color:var(--gray-700)}
.contact-item strong{color:var(--dark)}

/* --- QR Codes --- */
.qr-grid{display:flex;justify-content:center;gap:40px;margin-top:30px}
.qr-item{text-align:center}
.qr-item img{width:140px;height:140px;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:10px}
.qr-item p{font-size:0.9rem;color:var(--gray-700);font-weight:500}

/* --- Footer --- */
.site-footer{background:var(--dark);color:rgba(255,255,255,0.8);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.1)}
.footer-brand .logo-text{font-size:1.8rem;margin-bottom:12px;display:block}
.footer-brand p{font-size:0.9rem;line-height:1.8;opacity:0.8}
.footer-col h4{font-size:1.05rem;color:var(--white);margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:var(--primary)}
.footer-col a{display:block;padding:4px 0;font-size:0.9rem;color:rgba(255,255,255,0.7);transition:var(--transition)}
.footer-col a:hover{color:var(--primary);padding-left:6px}
.footer-bottom{text-align:center;padding:20px 0;font-size:0.85rem;opacity:0.7}
.footer-social{display:flex;gap:12px;margin-top:16px}
.footer-social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,0.1);display:flex;align-items:center;justify-content:center;color:var(--white);transition:var(--transition);font-size:0.9rem}
.footer-social a:hover{background:var(--primary);transform:translateY(-2px)}

/* --- Share Buttons --- */
.share-bar{display:flex;align-items:center;gap:10px;margin:20px 0}
.share-bar span{font-size:0.9rem;color:var(--gray-700);font-weight:600}
.share-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;color:var(--white);font-size:0.85rem;transition:var(--transition);cursor:pointer}
.share-btn:hover{transform:translateY(-2px);opacity:0.9;color:var(--white)}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* --- How To Guide --- */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:30px}
.howto-step{text-align:center;padding:24px;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);transition:var(--transition)}
.howto-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--white);display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;margin:0 auto 14px}
.howto-step h4{font-size:1rem;margin-bottom:8px}
.howto-step p{font-size:0.9rem;color:var(--gray-700)}

/* --- Community Features --- */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.community-card{background:var(--white);border-radius:var(--radius-lg);padding:30px;text-align:center;box-shadow:var(--shadow);transition:var(--transition);border-top:3px solid transparent}
.community-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-top-color:var(--primary)}
.community-icon{font-size:2.5rem;margin-bottom:14px}
.community-card h4{font-size:1.1rem;margin-bottom:8px}
.community-card p{font-size:0.9rem;color:var(--gray-700)}

/* --- AI Section --- */
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.ai-card{background:linear-gradient(135deg,rgba(232,67,147,0.05),rgba(108,92,231,0.05));border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:32px;transition:var(--transition)}
.ai-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:var(--shadow)}
.ai-card h4{font-size:1.1rem;margin-bottom:10px;color:var(--primary)}
.ai-card p{font-size:0.9rem;color:var(--gray-700);line-height:1.8}

/* --- Stats Bar --- */
.stats-bar{background:linear-gradient(135deg,var(--primary),var(--secondary));padding:40px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;color:var(--white)}
.stat-item .num{font-size:2.5rem;font-weight:800}
.stat-item .label{font-size:0.95rem;opacity:0.9;margin-top:4px}

/* --- Page Banner --- */
.page-banner{position:relative;height:300px;overflow:hidden}
.page-banner img{width:100%;height:100%;object-fit:cover}
.page-banner-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(232,67,147,0.75),rgba(108,92,231,0.75));display:flex;align-items:center;justify-content:center}
.page-banner-content{text-align:center;color:var(--white)}
.page-banner-content h1{font-size:2.4rem;margin-bottom:10px}
.page-banner-content p{font-size:1.1rem;opacity:0.9}

/* --- Pagination --- */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:40px}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:8px;font-size:0.95rem;transition:var(--transition)}
.pagination a{background:var(--white);border:1px solid var(--gray-200);color:var(--dark)}
.pagination a:hover{border-color:var(--primary);color:var(--primary)}
.pagination span.current{background:linear-gradient(135deg,var(--primary),var(--secondary));color:var(--white);border:none}

/* --- Video Duration Badge --- */
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,0.75);color:var(--white);padding:2px 8px;border-radius:4px;font-size:0.75rem;font-weight:600;z-index:2}

/* --- Video Author --- */
.video-author{font-size:0.8rem;color:var(--gray-500);margin-bottom:6px}

/* --- Video Tag Multiple --- */
.video-tag+.video-tag{margin-left:6px}

/* --- Footer Logo Wrap --- */
.footer-logo-wrap{display:flex;align-items:center;margin-bottom:12px}

/* --- Video Modal (H5 Player) --- */
.video-modal{position:fixed;top:0;left:0;width:100%;height:100%;z-index:9999}
.video-modal-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.8)}
.video-modal-content{position:relative;max-width:800px;width:90%;margin:5vh auto;background:var(--dark);border-radius:var(--radius-lg);overflow:hidden;z-index:1}
.video-modal-close{position:absolute;top:12px;right:16px;background:none;border:none;color:var(--white);font-size:2rem;cursor:pointer;z-index:2;transition:var(--transition)}
.video-modal-close:hover{color:var(--primary)}
.video-modal-title{padding:16px 20px;font-size:1.1rem;font-weight:600;color:var(--white);border-bottom:1px solid rgba(255,255,255,0.1)}
.video-player-wrapper{position:relative}
.video-player-screen{position:relative;aspect-ratio:16/9;background:#000}
.video-player-poster{width:100%;height:100%;object-fit:cover;filter:brightness(0.6)}
.video-player-controls{position:absolute;bottom:0;left:0;width:100%;background:linear-gradient(transparent,rgba(0,0,0,0.8));padding:12px 16px}
.video-progress-bar{width:100%;height:4px;background:rgba(255,255,255,0.3);border-radius:2px;margin-bottom:10px;cursor:pointer}
.video-progress-fill{width:0;height:100%;background:var(--primary);border-radius:2px;transition:width 0.3s}
.video-controls-row{display:flex;align-items:center;gap:12px;color:var(--white);font-size:0.85rem}
.vp-play-btn{background:none;border:none;color:var(--white);font-size:1.3rem;cursor:pointer;padding:4px 8px}
.vp-play-btn:hover{color:var(--primary)}
.vp-time{font-size:0.8rem;opacity:0.8}
.vp-spacer{flex:1}
.vp-quality,.vp-fullscreen{background:none;border:1px solid rgba(255,255,255,0.3);color:var(--white);padding:2px 8px;border-radius:4px;font-size:0.75rem;cursor:pointer}
.vp-quality:hover,.vp-fullscreen:hover{border-color:var(--primary);color:var(--primary)}
.video-modal-tip{padding:12px 20px;text-align:center;color:rgba(255,255,255,0.6);font-size:0.85rem}

/* --- Image Load --- */
img{opacity:1}

/* --- Animations --- */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeInUp 0.6s ease forwards}

/* --- Responsive --- */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .howto-steps{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:30px}
}
@media(max-width:768px){
  .main-nav{display:none;position:absolute;top:100%;left:0;width:100%;background:var(--white);flex-direction:column;padding:16px;box-shadow:var(--shadow-lg);border-radius:0 0 var(--radius) var(--radius)}
  .main-nav.open{display:flex}
  .mobile-toggle{display:block}
  .hero-content h1{font-size:1.8rem}
  .hero-content p{font-size:1rem}
  .hero-banner{min-height:360px}
  .hero-slider{min-height:360px}
  .video-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .feature-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:1fr}
  .ai-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .section{padding:40px 0}
  .section-title h2{font-size:1.6rem}
  .page-banner{height:200px}
  .page-banner-content h1{font-size:1.6rem}
  .expert-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr;gap:20px}
  .qr-grid{flex-direction:column;align-items:center}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .header-inner{padding:10px 16px}
  .logo-text{font-size:1.2rem}
  .container{padding:0 16px}
}