/* ============================================
   多p 全站样式表
   品牌色系：珊瑚红 #FF6B6B | 海洋绿 #4ECDC4 | 暖阳金 #FFE66D
   深色 #2C3E50 | 云白 #F7F7F7
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#333;background:#F7F7F7;line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:color .3s}
a:hover{color:#FF6B6B}
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:#2C3E50}

/* === 通用容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:"";display:block;width:60px;height:3px;background:linear-gradient(90deg,#FF6B6B,#4ECDC4);margin:10px auto 0}
.section-title p{color:#666;font-size:1rem}
.section-padding{padding:70px 0}
.btn{display:inline-block;padding:12px 30px;border-radius:30px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;border:none;text-align:center}
.btn-primary{background:linear-gradient(135deg,#FF6B6B,#FF8E8E);color:#fff;box-shadow:0 4px 15px rgba(255,107,107,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(255,107,107,.4);color:#fff}
.btn-secondary{background:linear-gradient(135deg,#4ECDC4,#6EE7DE);color:#fff;box-shadow:0 4px 15px rgba(78,205,196,.3)}
.btn-secondary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(78,205,196,.4);color:#fff}
.btn-outline{background:transparent;border:2px solid #FF6B6B;color:#FF6B6B}
.btn-outline:hover{background:#FF6B6B;color:#fff}

/* === 顶部导航 === */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(255,255,255,.97);box-shadow:0 2px 20px rgba(0,0,0,.08);transition:all .3s}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:70px}
.site-logo{display:flex;align-items:center;gap:10px}
.site-logo img{height:42px;width:auto}
.site-logo span{font-size:1.3rem;font-weight:700;color:#2C3E50}
.main-nav{display:flex;align-items:center;gap:5px}
.main-nav a{padding:8px 16px;font-size:.95rem;color:#555;border-radius:20px;transition:all .3s;font-weight:500}
.main-nav a:hover,.main-nav a.active{color:#FF6B6B;background:rgba(255,107,107,.08)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.nav-toggle span{display:block;width:24px;height:2px;background:#2C3E50;transition:all .3s}

/* === 搜索框 === */
.search-bar{background:linear-gradient(135deg,#FF6B6B,#4ECDC4);padding:12px 0}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%;background:#fff;border-radius:30px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.1)}
.search-box input{flex:1;border:none;padding:12px 20px;font-size:.95rem;outline:none;background:transparent}
.search-box button{background:linear-gradient(135deg,#FF6B6B,#FF8E8E);color:#fff;border:none;padding:12px 25px;cursor:pointer;font-size:.95rem;font-weight:600;transition:all .3s}
.search-box button:hover{background:linear-gradient(135deg,#e55a5a,#FF6B6B)}

/* === Hero区域 === */
.hero{position:relative;height:520px;background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;margin-top:70px}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(44,62,80,.6),rgba(78,205,196,.3))}
.hero-content{position:relative;z-index:2;max-width:700px;padding:0 20px}
.hero-content h1{font-size:2.8rem;margin-bottom:15px;text-shadow:0 2px 10px rgba(0,0,0,.3);color:#fff}
.hero-content p{font-size:1.15rem;margin-bottom:25px;opacity:.95;text-shadow:0 1px 5px rgba(0,0,0,.2)}
.hero-btns{display:flex;gap:15px;justify-content:center;flex-wrap:wrap}

/* === 视频卡片 === */
.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 20px rgba(0,0,0,.06);transition:all .3s}
.video-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.12)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(255,107,107,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .3s;cursor:pointer}
.play-btn::after{content:"";border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-card:hover .play-btn{opacity:1}
.video-info{padding:15px}
.video-info h3{font-size:1.05rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:15px;color:#999;font-size:.85rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:3px 10px;background:rgba(78,205,196,.1);color:#4ECDC4;border-radius:12px;font-size:.8rem;margin-top:8px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:.8rem}

/* === 服务模块 === */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.service-card{background:#fff;border-radius:12px;padding:30px;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:all .3s;position:relative;overflow:hidden}
.service-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,#FF6B6B,#4ECDC4);transform:scaleX(0);transition:transform .3s;transform-origin:left}
.service-card:hover::before{transform:scaleX(1)}
.service-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.1)}
.service-icon{width:70px;height:70px;margin:0 auto 20px;background:linear-gradient(135deg,rgba(255,107,107,.1),rgba(78,205,196,.1));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.service-card h3{font-size:1.15rem;margin-bottom:10px}
.service-card p{color:#666;font-size:.9rem;line-height:1.6}

/* === 专家团队 === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:all .3s;text-align:center}
.expert-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.12)}
.expert-avatar{width:120px;height:120px;border-radius:50%;margin:25px auto 15px;overflow:hidden;border:3px solid #4ECDC4}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h3{font-size:1.05rem;margin-bottom:5px}
.expert-card .role{color:#FF6B6B;font-size:.85rem;margin-bottom:10px}
.expert-card p{color:#666;font-size:.85rem;padding:0 15px;margin-bottom:15px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.expert-links{display:flex;justify-content:center;gap:10px;padding-bottom:20px}
.expert-links a{padding:6px 16px;border-radius:20px;font-size:.8rem}

/* === 合作品牌 === */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-item{width:150px;height:80px;background:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(0,0,0,.05);transition:all .3s;padding:15px;font-size:1rem;font-weight:700;color:#999}
.partner-item:hover{box-shadow:0 4px 20px rgba(0,0,0,.1);transform:translateY(-3px);color:#4ECDC4}

/* === 用户评价 === */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:25px}
.review-card{background:#fff;border-radius:12px;padding:25px;box-shadow:0 4px 20px rgba(0,0,0,.06);position:relative}
.review-card::before{content:"\201C";font-size:4rem;color:rgba(255,107,107,.15);position:absolute;top:10px;left:15px;font-family:Georgia,serif;line-height:1}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:45px;height:45px;border-radius:50%;background:linear-gradient(135deg,#FF6B6B,#4ECDC4);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}
.review-name{font-weight:600;font-size:.95rem}
.review-stars{color:#FFE66D;font-size:.9rem;margin-top:2px}
.review-text{color:#555;font-size:.9rem;line-height:1.7;padding-left:5px}
.review-date{color:#aaa;font-size:.8rem;margin-top:10px;text-align:right}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:10px;margin-bottom:12px;box-shadow:0 2px 10px rgba(0,0,0,.04);overflow:hidden}
.faq-question{padding:18px 25px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;transition:all .3s}
.faq-question:hover{color:#FF6B6B}
.faq-question .arrow{transition:transform .3s;font-size:1.2rem;color:#999}
.faq-item.active .faq-question .arrow{transform:rotate(180deg);color:#FF6B6B}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 25px}
.faq-answer p{padding-bottom:18px;color:#666;font-size:.9rem;line-height:1.7}
.faq-item.active .faq-answer{max-height:300px}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.contact-card{background:#fff;border-radius:12px;padding:30px;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,.06)}
.contact-card h3{font-size:1.1rem;margin-bottom:15px;color:#2C3E50}
.contact-card p{color:#666;font-size:.9rem;margin-bottom:8px}
.contact-qr{width:150px;height:150px;margin:15px auto;border-radius:10px;overflow:hidden}
.contact-qr img{width:100%;height:100%;object-fit:cover}

/* === 社交分享 === */
.share-bar{display:flex;justify-content:center;gap:15px;flex-wrap:wrap}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:25px;font-size:.9rem;color:#fff;transition:all .3s;cursor:pointer}
.share-btn:hover{transform:translateY(-2px);color:#fff}
.share-wechat{background:#07C160}
.share-weibo{background:#E6162D}
.share-douyin{background:#161823}
.share-bilibili{background:#00A1D6}

/* === 页脚 === */
.site-footer{background:#2C3E50;color:#ccc;padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:30px}
.footer-col h4{color:#fff;font-size:1.05rem;margin-bottom:15px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;bottom:0;left:0;width:30px;height:2px;background:linear-gradient(90deg,#FF6B6B,#4ECDC4)}
.footer-col p,.footer-col a{color:#aaa;font-size:.9rem;line-height:2;display:block;transition:color .3s}
.footer-col a:hover{color:#4ECDC4}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:.85rem;color:#888}
.footer-bottom a{color:#4ECDC4}
.footer-qr-row{display:flex;gap:20px;margin-top:10px}
.footer-qr-item{text-align:center}
.footer-qr-item img{width:100px;height:100px;border-radius:8px;margin-bottom:5px}
.footer-qr-item span{font-size:.8rem;color:#aaa}

/* === 面包屑 === */
.breadcrumb{padding:15px 0;font-size:.9rem;color:#999}
.breadcrumb a{color:#4ECDC4}
.breadcrumb span{margin:0 8px;color:#ccc}

/* === 内页通用 === */
.page-hero{height:300px;background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;position:relative;margin-top:70px}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(44,62,80,.7),rgba(78,205,196,.4))}
.page-hero h1{position:relative;z-index:2;font-size:2.2rem;color:#fff}
.page-content{padding:50px 0}

/* === 响应式 === */
@media(max-width:992px){
  .video-grid,.service-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .hero-content h1{font-size:2.2rem}
}
@media(max-width:768px){
  .main-nav{position:fixed;top:70px;left:0;width:100%;background:#fff;flex-direction:column;padding:20px;gap:5px;transform:translateY(-120%);transition:transform .3s;box-shadow:0 5px 20px rgba(0,0,0,.1)}
  .main-nav.active{transform:translateY(0)}
  .nav-toggle{display:flex}
  .video-grid{grid-template-columns:1fr}
  .service-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero{height:400px}
  .hero-content h1{font-size:1.8rem}
  .section-title h2{font-size:1.6rem}
  .page-hero{height:220px}
  .page-hero h1{font-size:1.6rem}
}

/* === 懒加载 === */
img[data-src]{opacity:0;transition:opacity .5s}
img.loaded{opacity:1}

/* === 动画 === */
.fade-in{opacity:0;transform:translateY(20px);transition:all .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* === How-To指南 === */
.howto-steps{max-width:700px;margin:0 auto}
.howto-step{display:flex;gap:20px;margin-bottom:25px;align-items:flex-start}
.step-number{width:45px;height:45px;min-width:45px;border-radius:50%;background:linear-gradient(135deg,#FF6B6B,#4ECDC4);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem}
.step-content h3{font-size:1rem;margin-bottom:5px}
.step-content p{color:#666;font-size:.9rem}

/* === AI赋能区域 === */
.ai-section{background:linear-gradient(135deg,#2C3E50,#34495E);color:#fff;position:relative;overflow:hidden}
.ai-section .section-title h2{color:#fff}
.ai-section .section-title h2::after{background:linear-gradient(90deg,#FFE66D,#4ECDC4)}
.ai-section .section-title p{color:#ccc}
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.ai-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:30px;text-align:center;transition:all .3s;backdrop-filter:blur(5px)}
.ai-card:hover{background:rgba(255,255,255,.15);transform:translateY(-5px)}
.ai-card h3{color:#FFE66D;margin-bottom:10px;font-size:1.1rem}
.ai-card p{color:#ccc;font-size:.9rem}
@media(max-width:768px){.ai-grid{grid-template-columns:1fr}}

/* === 社区功能 === */
.community-features{display:grid;grid-template-columns:repeat(2,1fr);gap:25px}
.community-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:all .3s}
.community-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.12)}
.community-card-img{height:200px;overflow:hidden}
.community-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.community-card:hover .community-card-img img{transform:scale(1.05)}
.community-card-body{padding:20px}
.community-card-body h3{font-size:1.1rem;margin-bottom:8px}
.community-card-body p{color:#666;font-size:.9rem}
@media(max-width:768px){.community-features{grid-template-columns:1fr}}