/* ============================================
   杏彩体育 - 原创样式表
   品牌色系：深海蓝 #1A2B4A | 活力橙 #FF6B35 | 科技青绿 #00D4AA
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:#0D1117;color:#E6EDF3;line-height:1.7;overflow-x:hidden}
a{color:#00D4AA;text-decoration:none;transition:color .3s}
a:hover{color:#FF6B35}
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:#E6EDF3}

/* === 容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.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,#FF6B35,#00D4AA);margin:10px auto 0}
.section-title p{color:#8B949E;font-size:1rem;max-width:600px;margin:0 auto}

/* === 头部导航 === */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(13,17,23,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.06);transition:all .3s}
.site-header.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:40px;width:auto}
.logo span{font-size:1.2rem;font-weight:700;color:#FF6B35}

/* 导航 */
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:8px 14px;font-size:.9rem;color:#E6EDF3;border-radius:6px;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{background:rgba(255,107,53,.12);color:#FF6B35}

/* 搜索框 */
.search-bar{position:relative;margin-left:12px}
.search-bar input{width:180px;padding:7px 36px 7px 14px;border:1px solid rgba(255,255,255,.12);border-radius:20px;background:rgba(255,255,255,.06);color:#E6EDF3;font-size:.85rem;outline:none;transition:all .3s}
.search-bar input:focus{border-color:#00D4AA;width:220px}
.search-bar input::placeholder{color:#8B949E}
.search-bar button{position:absolute;right:4px;top:50%;transform:translateY(-50%);background:none;border:none;color:#8B949E;cursor:pointer;padding:6px;font-size:1rem}
.search-bar button:hover{color:#00D4AA}

/* 移动端菜单 */
.menu-toggle{display:none;background:none;border:none;color:#E6EDF3;font-size:1.5rem;cursor:pointer;padding:4px}

/* === Banner === */
.hero-banner{position:relative;min-height:520px;display:flex;align-items:center;justify-content:center;margin-top:64px;overflow:hidden;background:#0D1117}
.hero-banner .bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.hero-banner .overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,17,23,.3) 0%,rgba(13,17,23,.85) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;padding:40px 20px;max-width:800px}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;background:linear-gradient(135deg,#FF6B35,#00D4AA);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content p{font-size:1.15rem;color:#C9D1D9;margin-bottom:24px;line-height:1.8}
.hero-content .btn-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* === 按钮 === */
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 24px;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .3s;border:none}
.btn-primary{background:linear-gradient(135deg,#FF6B35,#e55a2b);color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(255,107,53,.35);color:#fff}
.btn-outline{background:transparent;border:1.5px solid #00D4AA;color:#00D4AA}
.btn-outline:hover{background:#00D4AA;color:#0D1117}

/* === 视频卡片 === */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:#161B22;border-radius:12px;overflow:hidden;transition:all .3s;border:1px solid rgba(255,255,255,.06);cursor:pointer}
.video-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,.4);border-color:rgba(255,107,53,.2)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#21262D}
.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)}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(255,107,53,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .3s}
.video-card:hover .video-play-btn{opacity:1}
.video-play-btn::after{content:"";display:block;width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:14px}
.video-info h3{font-size:.95rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}
.video-meta{display:flex;align-items:center;gap:12px;color:#8B949E;font-size:.8rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;padding:2px 8px;background:rgba(0,212,170,.1);color:#00D4AA;border-radius:4px;font-size:.72rem;margin-top:8px}

/* === 模块卡片 === */
.module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.module-card{background:#161B22;border-radius:12px;padding:28px;text-align:center;border:1px solid rgba(255,255,255,.06);transition:all .3s}
.module-card:hover{border-color:rgba(0,212,170,.3);transform:translateY(-3px)}
.module-card .icon{font-size:2.5rem;margin-bottom:14px;display:block}
.module-card h3{font-size:1.1rem;margin-bottom:8px;color:#FF6B35}
.module-card p{font-size:.88rem;color:#8B949E;line-height:1.6}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{background:#161B22;border-radius:12px;padding:24px;text-align:center;border:1px solid rgba(255,255,255,.06);transition:all .3s}
.expert-card:hover{border-color:rgba(255,107,53,.3)}
.expert-card img{width:100px;height:100px;border-radius:50%;margin:0 auto 14px;object-fit:cover;border:3px solid #FF6B35}
.expert-card h4{font-size:1.05rem;margin-bottom:4px}
.expert-card .role{color:#00D4AA;font-size:.85rem;margin-bottom:10px}
.expert-card p{font-size:.85rem;color:#8B949E;line-height:1.6;margin-bottom:14px}
.expert-card .btn{font-size:.82rem;padding:6px 16px}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#161B22;border-radius:10px;margin-bottom:12px;border:1px solid rgba(255,255,255,.06);overflow:hidden}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:.95rem;transition:background .3s}
.faq-question:hover{background:rgba(255,255,255,.03)}
.faq-question .arrow{transition:transform .3s;color:#FF6B35;font-size:1.2rem}
.faq-item.open .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-item.open .faq-answer{max-height:300px;padding:0 24px 18px}
.faq-answer p{color:#8B949E;font-size:.9rem;line-height:1.7}

/* === 用户评论 === */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:#161B22;border-radius:12px;padding:24px;border:1px solid rgba(255,255,255,.06)}
.review-card .stars{color:#FF6B35;font-size:1rem;margin-bottom:10px;letter-spacing:2px}
.review-card .text{font-size:.9rem;color:#C9D1D9;line-height:1.7;margin-bottom:14px;font-style:italic}
.review-card .author{display:flex;align-items:center;gap:10px}
.review-card .author .avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#FF6B35,#00D4AA);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.85rem}
.review-card .author .name{font-size:.85rem;font-weight:600}
.review-card .author .date{font-size:.75rem;color:#8B949E}

/* === 社区模块 === */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.community-card{background:#161B22;border-radius:12px;overflow:hidden;border:1px solid rgba(255,255,255,.06);transition:all .3s}
.community-card:hover{transform:translateY(-3px);border-color:rgba(0,212,170,.3)}
.community-card img{width:100%;height:180px;object-fit:cover}
.community-card .info{padding:16px}
.community-card h4{font-size:1rem;margin-bottom:6px}
.community-card p{font-size:.85rem;color:#8B949E}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.contact-card{background:#161B22;border-radius:12px;padding:24px;text-align:center;border:1px solid rgba(255,255,255,.06)}
.contact-card .icon{font-size:2rem;margin-bottom:10px;color:#FF6B35}
.contact-card h4{margin-bottom:8px;font-size:1rem}
.contact-card p{font-size:.88rem;color:#8B949E}

/* === 品牌合作 === */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:24px;padding:20px 0}
.partner-wall .partner-item{background:#161B22;border-radius:10px;padding:16px 28px;border:1px solid rgba(255,255,255,.06);display:flex;align-items:center;gap:10px;font-size:.9rem;font-weight:600;color:#8B949E;transition:all .3s}
.partner-wall .partner-item:hover{border-color:#FF6B35;color:#FF6B35}

/* === How-To 指南 === */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px;max-width:960px;margin:0 auto}
.howto-step{text-align:center;padding:24px;background:#161B22;border-radius:12px;border:1px solid rgba(255,255,255,.06)}
.howto-step .step-num{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#FF6B35,#00D4AA);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;font-size:1.2rem;font-weight:700;color:#fff}
.howto-step h4{margin-bottom:8px;font-size:.95rem}
.howto-step p{font-size:.85rem;color:#8B949E}

/* === 社交分享 === */
.share-bar{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .3s;border:1px solid rgba(255,255,255,.1);color:#E6EDF3;background:#161B22}
.share-btn:hover{transform:translateY(-2px);border-color:#FF6B35;color:#FF6B35}

/* === 页脚 === */
.site-footer{background:#0A0E14;border-top:1px solid rgba(255,255,255,.06);padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{font-size:1rem;margin-bottom:14px;color:#FF6B35}
.footer-col p,.footer-col a{font-size:.85rem;color:#8B949E;display:block;margin-bottom:6px}
.footer-col a:hover{color:#00D4AA}
.footer-qr{display:flex;gap:20px;justify-content:center;align-items:flex-start}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:120px;height:120px;border-radius:8px;margin-bottom:6px}
.footer-qr .qr-item span{font-size:.78rem;color:#8B949E}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(255,255,255,.06);font-size:.82rem;color:#8B949E}
.footer-bottom .update-time{margin-top:6px;font-size:.78rem}

/* === 面包屑 === */
.breadcrumb{padding:12px 0;font-size:.85rem;color:#8B949E}
.breadcrumb a{color:#00D4AA}
.breadcrumb span{margin:0 6px;color:#484F58}

/* === 内页通用 === */
.page-hero{padding:100px 0 40px;text-align:center;background:linear-gradient(180deg,rgba(26,43,74,.4),rgba(13,17,23,1))}
.page-hero h1{font-size:2.2rem;margin-bottom:10px}
.page-hero p{color:#8B949E;font-size:1rem}

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

/* === 响应式 === */
@media(max-width:992px){
  .main-nav{display:none;position:absolute;top:64px;left:0;width:100%;background:#0D1117;flex-direction:column;padding:16px;border-bottom:1px solid rgba(255,255,255,.06)}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 16px;width:100%}
  .menu-toggle{display:block}
  .search-bar{position:absolute;top:64px;left:0;width:100%;padding:10px 20px;background:#0D1117;display:none}
  .search-bar.open{display:block}
  .search-bar input{width:100%}
  .hero-content h1{font-size:2rem}
  .section{padding:40px 0}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
}
@media(max-width:640px){
  .hero-content h1{font-size:1.6rem}
  .hero-content p{font-size:.95rem}
  .section-title h2{font-size:1.5rem}
  .video-grid{grid-template-columns:1fr}
  .module-grid{grid-template-columns:1fr 1fr}
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .header-inner{padding:0 12px}
}

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

/* === MCP前端占位 === */
.mcp-widget{background:#161B22;border-radius:12px;padding:20px;border:1px solid rgba(255,255,255,.06);text-align:center;margin-top:20px}
.mcp-widget .mcp-status{display:inline-flex;align-items:center;gap:6px;color:#00D4AA;font-size:.85rem}
.mcp-widget .mcp-status::before{content:"";width:8px;height:8px;border-radius:50%;background:#00D4AA;display:inline-block}