/* ============================================
   爱情岛 - 原创样式表
   品牌色彩：活力橙 #FF6B35 | 深夜蓝 #1A1A2E | 玫红 #E94560
   ============================================ */

/* === 基础重置与全局 === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",Arial,sans-serif;background:#0F0F23;color:#EAEAEA;line-height:1.8;overflow-x:hidden}
a{color:#FF6B35;text-decoration:none;transition:color .3s}
a:hover{color:#E94560}
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:#fff}

/* === 容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section-padding{padding:60px 0}

/* === 头部导航 === */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(26,26,46,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,107,53,.2);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:45px;width:auto}
.site-logo span{font-size:1.3rem;font-weight:700;color:#FF6B35;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:5px}
.main-nav a{padding:8px 14px;border-radius:6px;font-size:.9rem;color:#EAEAEA;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{background:rgba(255,107,53,.15);color:#FF6B35}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.nav-toggle span{width:25px;height:2px;background:#FF6B35;transition:all .3s}

/* === 搜索框 === */
.search-bar{background:rgba(22,33,62,.8);padding:15px 0;border-bottom:1px solid rgba(255,107,53,.1)}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:12px 20px;border:2px solid rgba(255,107,53,.3);border-right:none;border-radius:25px 0 0 25px;background:rgba(15,15,35,.8);color:#EAEAEA;font-size:.95rem;outline:none;transition:border-color .3s}
.search-box input:focus{border-color:#FF6B35}
.search-box input::placeholder{color:rgba(234,234,234,.4)}
.search-box button{padding:12px 25px;background:linear-gradient(135deg,#FF6B35,#E94560);border:none;border-radius:0 25px 25px 0;color:#fff;font-size:.95rem;cursor:pointer;transition:opacity .3s;white-space:nowrap}
.search-box button:hover{opacity:.85}

/* === Banner === */
.hero-banner{position:relative;min-height:85vh;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-top:70px}
.hero-banner .bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.55)}
.hero-content{position:relative;z-index:2;text-align:center;padding:40px 20px;max-width:800px}
.hero-content h1{font-size:3rem;margin-bottom:15px;background:linear-gradient(135deg,#FF6B35,#E94560);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content p{font-size:1.15rem;color:rgba(234,234,234,.9);margin-bottom:25px;line-height:1.9}
.hero-content .hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:15px}
.hero-content .hero-tags span{padding:6px 16px;background:rgba(255,107,53,.15);border:1px solid rgba(255,107,53,.3);border-radius:20px;font-size:.85rem;color:#FF6B35}
.btn-primary{display:inline-block;padding:14px 35px;background:linear-gradient(135deg,#FF6B35,#E94560);color:#fff;border-radius:30px;font-size:1rem;font-weight:600;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255,107,53,.35);color:#fff}
.btn-outline{display:inline-block;padding:12px 30px;border:2px solid #FF6B35;color:#FF6B35;border-radius:30px;font-size:.95rem;transition:all .3s}
.btn-outline:hover{background:#FF6B35;color:#fff}

/* === 通用区块标题 === */
.section-title{text-align:center;margin-bottom:45px}
.section-title h2{font-size:2rem;color:#fff;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:"";display:block;width:60px;height:3px;background:linear-gradient(90deg,#FF6B35,#E94560);margin:12px auto 0;border-radius:2px}
.section-title p{color:rgba(234,234,234,.6);font-size:.95rem;margin-top:8px}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:25px}
.video-card{background:#16213E;border-radius:12px;overflow:hidden;transition:all .4s;position:relative;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 15px 40px rgba(255,107,53,.2)}
.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(1.08)}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:60px;height:60px;background:rgba(255,107,53,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .4s;z-index:3}
.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-card:hover .video-play-btn{transform:translate(-50%,-50%) scale(1)}
.video-stats{position:absolute;bottom:8px;left:8px;display:flex;gap:12px;z-index:3}
.video-stats span{background:rgba(0,0,0,.7);padding:3px 10px;border-radius:12px;font-size:.75rem;color:#EAEAEA}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);padding:3px 8px;border-radius:4px;font-size:.75rem;color:#fff;z-index:3}
.video-info{padding:18px}
.video-info h3{font-size:1.05rem;margin-bottom:8px;color:#fff;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-info .meta{display:flex;align-items:center;gap:15px;font-size:.8rem;color:rgba(234,234,234,.5)}
.video-info .meta .tag{color:#FF6B35}

/* === 模块卡片 === */
.module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.module-card{background:#16213E;border-radius:12px;padding:30px;transition:all .4s;border:1px solid rgba(255,107,53,.08)}
.module-card:hover{border-color:rgba(255,107,53,.3);transform:translateY(-4px);box-shadow:0 12px 30px rgba(0,0,0,.3)}
.module-card .icon{width:55px;height:55px;background:linear-gradient(135deg,rgba(255,107,53,.2),rgba(233,69,96,.2));border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;font-size:1.5rem}
.module-card h3{font-size:1.1rem;margin-bottom:10px;color:#fff}
.module-card p{font-size:.9rem;color:rgba(234,234,234,.6);line-height:1.7}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:25px}
.expert-card{background:#16213E;border-radius:12px;padding:25px;text-align:center;transition:all .4s;border:1px solid rgba(255,107,53,.08)}
.expert-card:hover{border-color:#FF6B35;transform:translateY(-4px)}
.expert-card .avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 15px;overflow:hidden;border:3px solid rgba(255,107,53,.3)}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1.05rem;color:#fff;margin-bottom:5px}
.expert-card .role{color:#FF6B35;font-size:.85rem;margin-bottom:10px}
.expert-card p{font-size:.85rem;color:rgba(234,234,234,.6);line-height:1.6;margin-bottom:15px}
.expert-card .expert-btns{display:flex;gap:10px;justify-content:center}
.expert-card .expert-btns a{padding:6px 16px;border-radius:20px;font-size:.8rem;border:1px solid rgba(255,107,53,.4);color:#FF6B35;transition:all .3s}
.expert-card .expert-btns a:hover{background:#FF6B35;color:#fff}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#16213E;border-radius:10px;margin-bottom:12px;overflow:hidden;border:1px solid rgba(255,107,53,.08)}
.faq-item .faq-q{padding:18px 25px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#fff;transition:background .3s}
.faq-item .faq-q:hover{background:rgba(255,107,53,.08)}
.faq-item .faq-q .arrow{transition:transform .3s;color:#FF6B35;font-size:1.2rem}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{padding:0 25px;max-height:0;overflow:hidden;transition:all .4s;color:rgba(234,234,234,.7);font-size:.9rem;line-height:1.8}
.faq-item.open .faq-a{padding:0 25px 20px;max-height:500px}

/* === 用户评论 === */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:#16213E;border-radius:12px;padding:25px;border:1px solid rgba(255,107,53,.08)}
.review-card .stars{color:#FF6B35;margin-bottom:10px;font-size:1rem;letter-spacing:2px}
.review-card .review-text{font-size:.9rem;color:rgba(234,234,234,.75);line-height:1.8;margin-bottom:15px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.review-card .reviewer .r-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#FF6B35,#E94560);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.85rem;font-weight:700}
.review-card .reviewer .r-info .r-name{font-size:.85rem;color:#fff;font-weight:600}
.review-card .reviewer .r-info .r-date{font-size:.75rem;color:rgba(234,234,234,.4)}

/* === 社区模块 === */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}
.community-card{background:#16213E;border-radius:12px;padding:25px;text-align:center;transition:all .4s;border:1px solid rgba(255,107,53,.08)}
.community-card:hover{border-color:#FF6B35;transform:translateY(-3px)}
.community-card .emoji{font-size:2.5rem;margin-bottom:12px}
.community-card h4{font-size:1rem;color:#fff;margin-bottom:8px}
.community-card p{font-size:.8rem;color:rgba(234,234,234,.5)}

/* === 合作品牌墙 === */
.brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.brand-wall .brand-item{background:#16213E;border-radius:10px;padding:20px 30px;min-width:150px;text-align:center;border:1px solid rgba(255,107,53,.1);transition:all .3s}
.brand-wall .brand-item:hover{border-color:#FF6B35}
.brand-wall .brand-item span{color:rgba(234,234,234,.6);font-size:.9rem}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.contact-card{background:#16213E;border-radius:12px;padding:30px;border:1px solid rgba(255,107,53,.08)}
.contact-card h4{color:#FF6B35;margin-bottom:15px;font-size:1.05rem}
.contact-card p{font-size:.9rem;color:rgba(234,234,234,.65);margin-bottom:8px;line-height:1.7}
.contact-card .qr-img{width:150px;margin:15px auto 0;border-radius:8px;overflow:hidden}

/* === 社交分享 === */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:30px}
.share-bar a{display:flex;align-items:center;gap:6px;padding:10px 20px;background:#16213E;border-radius:25px;color:#EAEAEA;font-size:.85rem;border:1px solid rgba(255,107,53,.15);transition:all .3s}
.share-bar a:hover{background:rgba(255,107,53,.15);border-color:#FF6B35;color:#FF6B35}

/* === 页脚 === */
.site-footer{background:#0a0a1a;border-top:1px solid rgba(255,107,53,.15);padding:50px 0 25px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-bottom:35px}
.footer-col h4{color:#FF6B35;font-size:1rem;margin-bottom:15px}
.footer-col p,.footer-col a{font-size:.85rem;color:rgba(234,234,234,.55);line-height:2}
.footer-col a:hover{color:#FF6B35}
.footer-col .footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:15px}
.footer-col .footer-logo img{height:40px}
.footer-col .footer-logo span{font-size:1.1rem;font-weight:700;color:#FF6B35}
.footer-bottom{text-align:center;padding-top:25px;border-top:1px solid rgba(255,107,53,.1);font-size:.8rem;color:rgba(234,234,234,.4)}
.footer-qr{display:flex;gap:20px;margin-top:15px}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:120px;border-radius:6px}
.footer-qr .qr-item p{font-size:.75rem;color:rgba(234,234,234,.4);margin-top:5px}

/* === MCP前端代码区 === */
.mcp-widget{background:#16213E;border-radius:10px;padding:20px;margin-top:20px;border:1px solid rgba(255,107,53,.1)}
.mcp-widget h5{color:#FF6B35;font-size:.9rem;margin-bottom:10px}
.mcp-widget .mcp-status{display:flex;align-items:center;gap:8px;font-size:.8rem;color:rgba(234,234,234,.5)}
.mcp-widget .mcp-status .dot{width:8px;height:8px;border-radius:50%;background:#4CAF50;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* === 面包屑 === */
.breadcrumb{padding:15px 0;font-size:.85rem;color:rgba(234,234,234,.5)}
.breadcrumb a{color:#FF6B35}
.breadcrumb span{margin:0 8px;color:rgba(234,234,234,.3)}

/* === 内页通用 === */
.page-header{background:#16213E;padding:60px 0 40px;margin-top:70px;text-align:center;border-bottom:1px solid rgba(255,107,53,.1)}
.page-header h1{font-size:2.2rem;margin-bottom:10px}
.page-header p{color:rgba(234,234,234,.6);font-size:1rem}
.page-content{padding:40px 0 60px}
.page-content p{font-size:.95rem;color:rgba(234,234,234,.7);line-height:2;margin-bottom:15px}
.page-content h2{font-size:1.6rem;margin:30px 0 15px;color:#FF6B35}
.page-content h3{font-size:1.3rem;margin:25px 0 12px;color:#fff}

/* === How-To指南 === */
.howto-steps{counter-reset:step}
.howto-step{background:#16213E;border-radius:10px;padding:25px 25px 25px 70px;margin-bottom:15px;position:relative;border:1px solid rgba(255,107,53,.08)}
.howto-step::before{counter-increment:step;content:counter(step);position:absolute;left:20px;top:25px;width:35px;height:35px;background:linear-gradient(135deg,#FF6B35,#E94560);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.9rem}
.howto-step h4{color:#fff;margin-bottom:8px}
.howto-step p{font-size:.9rem;color:rgba(234,234,234,.6)}

/* === 懒加载占位 === */
.lazy-img{opacity:0;transition:opacity .6s}
.lazy-img.loaded{opacity:1}

/* === 响应式 === */
@media(max-width:992px){
  .main-nav{position:fixed;top:70px;right:-100%;width:260px;height:calc(100vh - 70px);background:#1A1A2E;flex-direction:column;padding:20px;gap:5px;transition:right .3s;overflow-y:auto}
  .main-nav.open{right:0}
  .main-nav a{padding:12px 15px;width:100%}
  .nav-toggle{display:flex}
  .hero-content h1{font-size:2rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
}
@media(max-width:768px){
  .hero-banner{min-height:70vh}
  .hero-content h1{font-size:1.6rem}
  .hero-content p{font-size:.95rem}
  .section-title h2{font-size:1.5rem}
  .module-grid,.expert-grid,.review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .site-header .container{height:60px}
  .hero-banner{margin-top:60px;min-height:60vh}
  .hero-content h1{font-size:1.3rem}
  .section-padding{padding:40px 0}
  .footer-grid{grid-template-columns:1fr}
  .video-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:1fr 1fr}
}