/* 六合彩 - 全站样式表 */
/* 基础重置 */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;line-height:1.7;color:#333;background:#f8f9fa}
a{text-decoration:none;color:inherit;transition:color .3s}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 颜色变量 */
:root{
  --primary:#c41e3a;
  --primary-dark:#9a1830;
  --secondary:#d4af37;
  --secondary-light:#f0d060;
  --dark:#1a1a2e;
  --darker:#0f0f1a;
  --light:#ffffff;
  --gray:#6c757d;
  --gray-light:#e9ecef;
  --success:#28a745;
  --gradient:linear-gradient(135deg,#c41e3a 0%,#d4af37 100%);
  --shadow:0 4px 20px rgba(0,0,0,.1);
  --shadow-lg:0 10px 40px rgba(0,0,0,.15);
}

/* 头部导航 */
.site-header{background:var(--dark);position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.3)}
.header-top{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.logo-wrap{display:flex;align-items:center;gap:12px}
.logo-wrap img{width:48px;height:48px;border-radius:50%}
.logo-wrap h1{font-size:1.4rem;color:var(--secondary);letter-spacing:2px}
.logo-wrap h1 span{color:var(--light)}

.nav-main{background:var(--darker);border-top:1px solid rgba(255,255,255,.1)}
.nav-main ul{display:flex;justify-content:center;flex-wrap:wrap;gap:0}
.nav-main li a{display:block;padding:14px 22px;color:#ddd;font-size:.95rem;font-weight:500;transition:all .3s;position:relative}
.nav-main li a:hover,.nav-main li a.active{color:var(--secondary);background:rgba(212,175,55,.08)}
.nav-main li a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:3px;background:var(--secondary);transition:width .3s}
.nav-main li a:hover::after,.nav-main li a.active::after{width:60%}

/* 搜索框 */
.search-bar{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);padding:15px 0}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%;border-radius:30px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.2)}
.search-box input{flex:1;padding:12px 24px;border:none;font-size:1rem;outline:none}
.search-box button{padding:12px 28px;background:var(--secondary);color:#fff;border:none;font-size:1rem;cursor:pointer;font-weight:600;transition:background .3s}
.search-box button:hover{background:var(--secondary-light)}

/* Hero区域 */
.hero-section{position:relative;overflow:hidden;background:var(--dark)}
.hero-section .hero-bg{width:100%;height:480px;object-fit:cover;opacity:.7}
.hero-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:linear-gradient(to bottom,rgba(0,0,0,.3),rgba(0,0,0,.6));padding:20px}
.hero-overlay h2{font-size:2.8rem;color:#fff;text-shadow:2px 2px 8px rgba(0,0,0,.5);margin-bottom:16px}
.hero-overlay p{font-size:1.2rem;color:#eee;max-width:700px;margin-bottom:24px}
.hero-overlay .btn-primary{display:inline-block;padding:14px 36px;background:var(--gradient);color:#fff;border-radius:30px;font-size:1.1rem;font-weight:600;box-shadow:0 4px 15px rgba(196,30,58,.4);transition:transform .3s}
.hero-overlay .btn-primary:hover{transform:translateY(-2px)}

/* 通用区块 */
.section{padding:60px 0}
.section-alt{background:#fff}
.section-dark{background:var(--dark);color:#fff}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;color:var(--dark);position:relative;display:inline-block;padding-bottom:12px}
.section-title h2::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:4px;background:var(--gradient);border-radius:2px}
.section-dark .section-title h2{color:#fff}
.section-title p{color:var(--gray);margin-top:12px;font-size:1.05rem}

/* 视频卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#000}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .3s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.video-thumb .play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;background:rgba(0,0,0,.4)}
.video-card:hover .video-thumb .play-btn{opacity:1}
.play-btn span{width:60px;height:60px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 15px rgba(196,30,58,.5)}
.play-btn span::after{content:'';border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-info{padding:16px}
.video-info h3{font-size:1.05rem;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:16px;color:var(--gray);font-size:.85rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:3px 10px;background:rgba(196,30,58,.1);color:var(--primary);border-radius:12px;font-size:.75rem;margin-top:8px}

/* 特色模块 */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.feature-card{background:#fff;padding:30px 24px;border-radius:12px;text-align:center;box-shadow:var(--shadow);transition:transform .3s}
.feature-card:hover{transform:translateY(-3px)}
.feature-card .icon{width:64px;height:64px;margin:0 auto 16px;background:var(--gradient);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:#fff}
.feature-card .icon svg{width:32px;height:32px;fill:#fff}
.feature-card h3{font-size:1.1rem;margin-bottom:10px;color:var(--dark)}
.feature-card p{color:var(--gray);font-size:.9rem;line-height:1.6}

/* 专家展示 */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow);text-align:center;padding:30px 20px}
.expert-card .avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;background:var(--gray-light);overflow:hidden;border:3px solid var(--secondary)}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1.1rem;color:var(--dark);margin-bottom:6px}
.expert-card .role{color:var(--primary);font-size:.9rem;margin-bottom:12px}
.expert-card p{color:var(--gray);font-size:.85rem;line-height:1.6;margin-bottom:16px}
.expert-card .btn-sm{display:inline-block;padding:8px 20px;border:2px solid var(--primary);color:var(--primary);border-radius:20px;font-size:.85rem;transition:all .3s}
.expert-card .btn-sm:hover{background:var(--primary);color:#fff}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:10px;margin-bottom:12px;box-shadow:0 2px 8px rgba(0,0,0,.06);overflow:hidden}
.faq-item .faq-q{padding:18px 24px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-item .faq-q:hover{background:rgba(196,30,58,.03)}
.faq-item .faq-q::after{content:'+';font-size:1.4rem;color:var(--primary);transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .3s;color:var(--gray);line-height:1.8}
.faq-item.active .faq-a{padding:0 24px 18px;max-height:500px}

/* 用户评论 */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.review-card{background:#fff;padding:24px;border-radius:12px;box-shadow:var(--shadow);position:relative}
.review-card::before{content:'\201C';position:absolute;top:10px;left:16px;font-size:3rem;color:rgba(196,30,58,.15);font-family:Georgia,serif}
.review-card .stars{color:var(--secondary);margin-bottom:10px;font-size:1.1rem}
.review-card p{color:#555;font-size:.95rem;line-height:1.7;margin-bottom:12px;padding-left:8px}
.review-card .reviewer{display:flex;align-items:center;gap:10px;font-size:.85rem;color:var(--gray)}
.review-card .reviewer strong{color:var(--dark)}

/* 合作品牌 */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.brand-wall .brand-item{width:120px;height:60px;background:var(--gray-light);border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--gray);font-size:.85rem;transition:transform .3s}
.brand-wall .brand-item:hover{transform:scale(1.05)}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.contact-card{background:#fff;padding:24px;border-radius:12px;box-shadow:var(--shadow);text-align:center}
.contact-card h4{color:var(--dark);margin-bottom:12px;font-size:1.05rem}
.contact-card p{color:var(--gray);font-size:.9rem;line-height:1.8}
.contact-card img{max-width:160px;margin:12px auto 0;border-radius:8px}

/* 页脚 */
.site-footer{background:var(--darker);color:#aaa;padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{color:var(--secondary);margin-bottom:16px;font-size:1rem}
.footer-col p,.footer-col a{color:#aaa;font-size:.9rem;line-height:2;display:block}
.footer-col a:hover{color:var(--secondary)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:.85rem}
.footer-bottom .update-time{color:var(--secondary);margin-top:8px}

/* 社交分享 */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.share-bar a{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:20px;font-size:.85rem;color:#fff;transition:transform .3s}
.share-bar a:hover{transform:translateY(-2px)}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#000}
.share-bilibili{background:#00a1d6}

/* 面包屑 */
.breadcrumb{padding:12px 0;font-size:.9rem;color:var(--gray)}
.breadcrumb a{color:var(--primary)}
.breadcrumb span{margin:0 8px;color:#ccc}

/* 内页布局 */
.page-banner{position:relative;height:300px;overflow:hidden;background:var(--dark)}
.page-banner img{width:100%;height:100%;object-fit:cover;opacity:.6}
.page-banner .banner-text{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;text-align:center}
.page-banner .banner-text h2{font-size:2.2rem;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.page-banner .banner-text p{margin-top:10px;font-size:1.1rem;opacity:.9}

.content-wrap{padding:40px 0}
.content-main{max-width:900px;margin:0 auto}
.content-main h3{font-size:1.4rem;color:var(--dark);margin:24px 0 12px;padding-left:12px;border-left:4px solid var(--primary)}
.content-main p{color:#555;line-height:1.9;margin-bottom:16px;text-indent:2em}
.content-main .highlight-box{background:linear-gradient(135deg,rgba(196,30,58,.05),rgba(212,175,55,.05));border:1px solid rgba(196,30,58,.15);border-radius:10px;padding:20px;margin:20px 0}

/* 问答区 */
.qa-section{margin-top:40px}
.qa-item{background:#fff;border-radius:10px;padding:20px;margin-bottom:16px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.qa-item .question{font-weight:600;color:var(--dark);margin-bottom:10px;padding-left:24px;position:relative}
.qa-item .question::before{content:'Q';position:absolute;left:0;color:var(--primary);font-weight:700}
.qa-item .answer{color:var(--gray);padding-left:24px;position:relative;line-height:1.7}
.qa-item .answer::before{content:'A';position:absolute;left:0;color:var(--success);font-weight:700}

/* 数据统计条 */
.stats-bar{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:20px;padding:30px 0}
.stat-item{text-align:center}
.stat-item .num{font-size:2rem;font-weight:700;color:var(--primary)}
.stat-item .label{color:var(--gray);font-size:.9rem;margin-top:4px}

/* 响应式 */
@media(max-width:768px){
  .header-top{flex-direction:column;gap:10px}
  .nav-main ul{justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}
  .nav-main li a{padding:12px 16px;font-size:.85rem;white-space:nowrap}
  .hero-section .hero-bg{height:320px}
  .hero-overlay h2{font-size:1.8rem}
  .hero-overlay p{font-size:1rem}
  .video-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr 1fr}
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:40px 0}
  .page-banner{height:200px}
  .page-banner .banner-text h2{font-size:1.6rem}
}
@media(max-width:480px){
  .feature-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .stats-bar{grid-template-columns:1fr 1fr}
}

/* 懒加载占位 */
.lazy{opacity:0;transition:opacity .5s}
.lazy.loaded{opacity:1}

/* 动画 */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.animate-in{animation:fadeInUp .6s ease forwards}