/* ===== 全局样式 ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:#f5f6fa;color:#333;line-height:1.7;font-size:16px}
a{color:#ff6f61;text-decoration:none;transition:color .3s}
a:hover{color:#e55a4e}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== 头部 ===== */
header{background:#fff;border-bottom:2px solid #ff6f61;position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px}
.logo img{height:50px;width:auto}
nav ul{list-style:none;display:flex;gap:22px}
nav ul li a{color:#333;font-weight:600;font-size:15px;padding:8px 0;border-bottom:2px solid transparent;transition:all .3s}
nav ul li a:hover{color:#ff6f61;border-bottom-color:#ff6f61}
.mobile-menu-btn{display:none;flex-direction:column;gap:5px;cursor:pointer}
.mobile-menu-btn span{width:25px;height:3px;background:#333;border-radius:2px}

/* 搜索栏 */
.search-bar{background:#fafafa;padding:10px 0;border-bottom:1px solid #eee}
.search-box{display:flex;max-width:500px;margin:0 auto}
.search-box input{flex:1;border:2px solid #ddd;padding:10px 16px;border-radius:25px 0 0 25px;outline:none;font-size:14px;transition:border-color .3s}
.search-box input:focus{border-color:#ff6f61}
.search-box button{border:none;background:#ff6f61;color:#fff;padding:10px 20px;border-radius:0 25px 25px 0;cursor:pointer;font-size:14px;font-weight:600;transition:background .3s}
.search-box button:hover{background:#e55a4e}

/* ===== Hero ===== */
.hero-section{position:relative;overflow:hidden}
.hero-banner{position:relative}
.hero-banner img{width:100%;height:400px;object-fit:cover;display:block}
.hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(0,0,0,.7) 0%,rgba(0,0,0,.3) 100%);display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:20px}
.hero-overlay h1{color:#fff;font-size:2.8em;margin-bottom:15px;text-shadow:2px 2px 4px rgba(0,0,0,.5)}
.hero-subtitle{color:#ffd700;font-size:1.2em;margin-bottom:25px}
.hero-btn{display:inline-block;background:#ff6f61;color:#fff;padding:14px 35px;border-radius:30px;font-size:1.1em;font-weight:600;transition:all .3s;box-shadow:0 4px 15px rgba(255,111,97,.4)}
.hero-btn:hover{background:#e55a4e;transform:translateY(-3px);color:#fff;box-shadow:0 6px 20px rgba(255,111,97,.5)}

/* ===== 面包屑 ===== */
.breadcrumb{background:#fff;padding:12px 0;font-size:14px;color:#999;border-bottom:1px solid #eee}
.breadcrumb a{color:#666}
.breadcrumb a:hover{color:#ff6f61}

/* ===== 通用Section ===== */
section{padding:60px 0}
section:nth-child(even){background:#fff}
section h2{text-align:center;font-size:2.2em;margin-bottom:15px;color:#333;position:relative}
section h2::after{content:'';display:block;width:60px;height:3px;background:#ff6f61;margin:10px auto 0}
.section-desc{text-align:center;color:#666;max-width:700px;margin:0 auto 40px;font-size:1.05em}

/* ===== 视频卡片网格 ===== */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s;cursor:pointer}
.video-card:hover{transform:translateY(-8px);box-shadow:0 8px 30px rgba(0,0,0,.15)}
.video-thumb{position:relative;overflow:hidden}
.video-thumb img{width:100%;height:220px;object-fit:cover;display:block;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-button{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(255,111,97,.85);border-radius:50%;display:flex;justify-content:center;align-items:center;opacity:0;transition:opacity .3s,transform .3s}
.video-card:hover .play-button{opacity:1;transform:translate(-50%,-50%) scale(1.1)}
.play-button::after{content:'▶';font-size:22px;color:#fff;margin-left:4px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:12px}
.video-info{padding:15px}
.video-info h3{font-size:1em;margin-bottom:8px;color:#333;line-height:1.4}
.video-stats{display:flex;gap:12px;font-size:12px;color:#999;margin-bottom:8px}
.video-tags{display:flex;gap:6px;flex-wrap:wrap}
.tag{background:#fff3f2;color:#ff6f61;padding:2px 10px;border-radius:12px;font-size:12px}

/* ===== 3列/4列网格 ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}

/* ===== 卡片 ===== */
.card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s}
.card:hover{transform:translateY(-8px);box-shadow:0 8px 25px rgba(0,0,0,.12)}
.card>img{width:100%;height:200px;object-fit:cover}
.card-body{padding:20px}
.card-body h3{color:#ff6f61;margin-bottom:8px;font-size:1.15em}
.card-body p{color:#666;font-size:.95em}

/* ===== 娱乐卡片 ===== */
.ent-card{background:#fff;border-radius:12px;padding:30px 20px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s}
.ent-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(0,0,0,.12)}
.ent-icon{font-size:2.5em;margin-bottom:15px}
.ent-card h4{color:#333;margin-bottom:8px}
.ent-card p{color:#666;font-size:.9em}

/* ===== 社区卡片 ===== */
.community-card{background:linear-gradient(135deg,#fff5f4,#fff);border-radius:12px;padding:25px;box-shadow:0 4px 15px rgba(0,0,0,.06);transition:all .3s;border-left:4px solid #ff6f61}
.community-card:hover{transform:translateY(-5px);box-shadow:0 8px 20px rgba(0,0,0,.1)}
.community-card h4{color:#ff6f61;margin-bottom:8px}
.community-card p{color:#666;font-size:.95em}

/* ===== 专家卡片 ===== */
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s;display:flex;flex-direction:column}
.expert-card:hover{transform:translateY(-8px);box-shadow:0 8px 25px rgba(0,0,0,.12)}
.expert-card>img{width:100%;height:250px;object-fit:cover}
.expert-info{padding:20px;flex:1;display:flex;flex-direction:column}
.expert-info h3{color:#333;margin-bottom:5px}
.expert-title{color:#ff6f61;font-size:.9em;font-weight:600;margin-bottom:10px}
.expert-awards{background:#fff9f0;padding:8px 12px;border-radius:6px;font-size:.85em;color:#e8a020;margin:10px 0 15px}
.expert-actions{display:flex;gap:10px;margin-top:auto}
.btn-primary{background:#ff6f61;color:#fff;padding:10px 20px;border-radius:6px;font-size:.9em;transition:all .3s;text-align:center;flex:1}
.btn-primary:hover{background:#e55a4e;color:#fff}
.btn-secondary{background:#f0f0f0;color:#333;padding:10px 20px;border-radius:6px;font-size:.9em;transition:all .3s;text-align:center;flex:1}
.btn-secondary:hover{background:#ddd}

/* ===== 合作伙伴 ===== */
.partner-logos{display:flex;justify-content:center;gap:30px;flex-wrap:wrap}
.partner-item{background:#fff;padding:20px 35px;border-radius:10px;box-shadow:0 2px 10px rgba(0,0,0,.06);font-weight:700;color:#666;font-size:1.1em;transition:all .3s}
.partner-item:hover{box-shadow:0 4px 15px rgba(0,0,0,.12);color:#ff6f61}

/* ===== How-To步骤 ===== */
.howto-steps{display:flex;justify-content:center;gap:30px;flex-wrap:wrap}
.step{background:#fff;border-radius:12px;padding:30px 25px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.08);flex:1;min-width:200px;max-width:260px;transition:all .3s}
.step:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(0,0,0,.12)}
.step-number{width:50px;height:50px;background:#ff6f61;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5em;font-weight:700;margin:0 auto 15px}
.step h4{color:#333;margin-bottom:8px}
.step p{color:#666;font-size:.9em}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;margin-bottom:12px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.05);overflow:hidden}
.faq-question{padding:18px 20px;margin:0;cursor:pointer;font-size:1.05em;color:#333;position:relative;padding-right:40px;transition:color .3s}
.faq-question:hover{color:#ff6f61}
.faq-question::after{content:'+';position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:1.4em;color:#ff6f61;transition:transform .3s}
.faq-item.active .faq-question::after{transform:translateY(-50%) rotate(45deg)}
.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:all .3s ease}
.faq-item.active .faq-answer{padding:0 20px 18px;max-height:200px}
.faq-answer p{color:#666}

/* ===== 评价 ===== */
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{background:#fff;padding:25px;border-radius:12px;box-shadow:0 4px 15px rgba(0,0,0,.06);transition:all .3s}
.review-card:hover{transform:translateY(-5px);box-shadow:0 8px 20px rgba(0,0,0,.1)}
.review-stars{color:#ffd700;font-size:1.2em;margin-bottom:12px}
.review-text{font-style:italic;color:#555;margin-bottom:15px;line-height:1.6}
.review-author{display:flex;justify-content:space-between;align-items:center;font-size:.85em}
.author-name{font-weight:600;color:#333}
.review-date{color:#999}

/* ===== 分享 ===== */
.share-section{text-align:center}
.share-buttons{display:flex;justify-content:center;gap:15px;margin-top:20px}
.share-btn{display:inline-block;padding:12px 25px;border-radius:25px;color:#fff;font-weight:600;transition:all .3s}
.share-btn:hover{transform:translateY(-3px);color:#fff}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00a1d6}

/* ===== 详情页 ===== */
.detail-section{padding:40px 0}
.detail-layout{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:50px}
.detail-video .video-thumb{border-radius:12px;overflow:hidden}
.detail-info h1{font-size:1.8em;margin-bottom:15px;color:#333}
.detail-meta{display:flex;gap:20px;font-size:.9em;color:#999;margin-bottom:20px;flex-wrap:wrap}
.detail-stats{display:flex;gap:20px;margin-bottom:20px}
.stat-item{text-align:center;background:#f8f8f8;padding:12px 20px;border-radius:8px}
.stat-item strong{display:block;font-size:1.3em;color:#ff6f61}
.stat-item span{font-size:.8em;color:#999}
.detail-tags{margin-bottom:20px;display:flex;gap:8px;flex-wrap:wrap}
.detail-desc h2{font-size:1.3em;margin-bottom:10px;text-align:left}
.detail-desc h2::after{display:none}
.detail-desc p{color:#666;margin-bottom:10px}
.related-section h3{font-size:1.5em;margin-bottom:20px;color:#333}

/* ===== 联系我们页 ===== */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.contact-card{background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 15px rgba(0,0,0,.08)}
.contact-card h3{color:#ff6f61;margin-bottom:15px}
.contact-card p{margin-bottom:8px;color:#666}
.contact-form{background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 15px rgba(0,0,0,.08);margin-top:30px}
.contact-form h3{color:#333;margin-bottom:20px}
.form-group{margin-bottom:15px}
.form-group label{display:block;margin-bottom:5px;font-weight:600;color:#333}
.form-group input,.form-group textarea{width:100%;padding:10px 15px;border:2px solid #ddd;border-radius:8px;font-size:14px;outline:none;transition:border-color .3s}
.form-group input:focus,.form-group textarea:focus{border-color:#ff6f61}
.form-group textarea{height:120px;resize:vertical}
.submit-btn{background:#ff6f61;color:#fff;border:none;padding:12px 30px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:background .3s}
.submit-btn:hover{background:#e55a4e}

/* ===== 页脚 ===== */
footer{background:#1a1a2e;color:#ccc;padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-brand p{margin-top:15px;font-size:.9em;line-height:1.6}
.footer-links h4,.footer-contact h4,.footer-qrcodes h4{color:#ff6f61;margin-bottom:15px}
.footer-links ul{list-style:none}
.footer-links ul li{margin-bottom:8px}
.footer-links ul li a{color:#ccc;transition:color .3s}
.footer-links ul li a:hover{color:#ff6f61}
.footer-contact p{margin-bottom:6px;font-size:.9em}
.qr-group{display:flex;gap:15px}
.qr-item{text-align:center}
.qr-item img{width:100px;height:100px;border-radius:8px;border:2px solid #333}
.qr-item span{display:block;margin-top:5px;font-size:.8em;color:#999}
.footer-bottom{border-top:1px solid #333;padding:20px 0;text-align:center;font-size:.85em}
.footer-bottom a{color:#ff6f61}

/* ===== 响应式 ===== */
@media(max-width:1024px){
    .video-grid{grid-template-columns:repeat(2,1fr)}
    .grid-3{grid-template-columns:repeat(2,1fr)}
    .grid-4{grid-template-columns:repeat(2,1fr)}
    .reviews-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:repeat(2,1fr)}
    .detail-layout{grid-template-columns:1fr}
    .contact-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
    nav ul{display:none}
    .mobile-menu-btn{display:flex}
    nav.active ul{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#fff;padding:20px;box-shadow:0 5px 15px rgba(0,0,0,.1);z-index:999}
    .hero-overlay h1{font-size:1.8em}
    .hero-subtitle{font-size:1em}
    .video-grid{grid-template-columns:1fr}
    .grid-3{grid-template-columns:1fr}
    .grid-4{grid-template-columns:repeat(2,1fr)}
    .reviews-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .howto-steps{flex-direction:column;align-items:center}
    .step{max-width:100%}
    section h2{font-size:1.8em}
    .header-inner{flex-wrap:wrap}
    .detail-stats{flex-wrap:wrap}
}
@media(max-width:480px){
    .grid-4{grid-template-columns:1fr}
    .share-buttons{flex-wrap:wrap}
    .partner-logos{flex-direction:column;align-items:center}
    .qr-group{flex-direction:column;align-items:center}
}