/* ============================================
   探花 - 原创样式表
   品牌色系：探花粉红 #E8436F / 深夜蓝黑 #1A1E2E / 暖橙 #FFB347
   ============================================ */

/* === 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","Hiragino Sans GB","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;color:#2D2D3A;background:#F5F0EB;line-height:1.7;overflow-x:hidden}
a{color:#E8436F;text-decoration:none;transition:color .3s}
a:hover{color:#FF6B9D}
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:#1A1E2E}

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

/* === 头部导航 === */
.site-header{background:#1A1E2E;position:sticky;top:0;z-index:1000;box-shadow:0 2px 12px rgba(0,0,0,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:0 20px;max-width:1200px;margin:0 auto;height:68px}
.site-logo{display:flex;align-items:center;gap:10px}
.site-logo .logo-img{height:42px;width:auto}
.site-logo .favicon-img{height:24px;width:24px;display:none}
.site-logo span{color:#fff;font-size:1.2rem;font-weight:700;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{color:rgba(255,255,255,.85);padding:22px 16px;font-size:.9rem;transition:all .3s;position:relative;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#FFB347}
.main-nav a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:3px;background:linear-gradient(90deg,#E8436F,#FFB347);border-radius:2px;transition:width .3s}
.main-nav a:hover::after,.main-nav a.active::after{width:60%}
.mobile-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:8px}

/* === 搜索框 === */
.search-bar{background:linear-gradient(135deg,#1A1E2E 0%,#2a2f42 100%);padding:16px 0}
.search-inner{max-width:680px;margin:0 auto;display:flex;gap:0;padding:0 20px}
.search-inner input{flex:1;padding:12px 20px;border:2px solid rgba(232,67,111,.3);border-right:none;border-radius:25px 0 0 25px;font-size:.95rem;background:rgba(255,255,255,.08);color:#fff;outline:none;transition:border-color .3s}
.search-inner input::placeholder{color:rgba(255,255,255,.5)}
.search-inner input:focus{border-color:#E8436F;background:rgba(255,255,255,.12)}
.search-inner button{padding:12px 28px;background:linear-gradient(135deg,#E8436F,#FF6B9D);color:#fff;border:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:.95rem;font-weight:600;transition:transform .2s}
.search-inner button:hover{transform:scale(1.02)}

/* === Banner === */
.hero-banner{position:relative;height:520px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-banner .banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.55)}
.hero-content{position:relative;z-index:2;text-align:center;color:#fff;padding:0 20px;max-width:800px}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 8px rgba(0,0,0,.4)}
.hero-content h1 span{color:#FFB347}
.hero-content p{font-size:1.15rem;opacity:.92;margin-bottom:24px;line-height:1.8}
.hero-content .hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:20px}
.hero-content .hero-tags span{background:rgba(232,67,111,.7);padding:6px 16px;border-radius:20px;font-size:.85rem}
.hero-btn{display:inline-block;padding:14px 36px;background:linear-gradient(135deg,#E8436F,#FF6B9D);color:#fff;border-radius:30px;font-size:1.05rem;font-weight:600;transition:all .3s;box-shadow:0 4px 15px rgba(232,67,111,.4)}
.hero-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(232,67,111,.5);color:#fff}

/* === 通用标题 === */
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;color:#1A1E2E;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:4px;background:linear-gradient(90deg,#E8436F,#FFB347);margin:10px auto 0;border-radius:2px}
.section-title p{color:#666;font-size:1rem;margin-top:8px}

/* === 视频卡片 === */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .35s}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 32px rgba(232,67,111,.12)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;cursor:pointer}
.video-thumb video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.video-thumb .video-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s;z-index:1}
.video-card:hover .video-thumb .video-poster{transform:scale(1.06)}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(232,67,111,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;pointer-events:none;z-index:3}
.video-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 .video-play-btn{opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem;z-index:2}
.video-meta{padding:16px}
.video-meta h3{font-size:1.05rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta .meta-info{display:flex;align-items:center;gap:14px;color:#999;font-size:.82rem}
.video-meta .meta-info span{display:flex;align-items:center;gap:4px}
.video-meta .meta-date{color:#bbb;font-size:.78rem;margin-top:4px}
.video-tag{display:inline-block;background:rgba(232,67,111,.1);color:#E8436F;padding:3px 10px;border-radius:12px;font-size:.75rem;margin-top:8px;margin-right:4px}

/* === 模块卡片 === */
.module-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.module-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .35s;display:flex;flex-direction:column}
.module-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(232,67,111,.1)}
.module-card .card-img{height:220px;overflow:hidden}
.module-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.module-card:hover .card-img img{transform:scale(1.05)}
.module-card .card-body{padding:24px;flex:1}
.module-card .card-body h3{font-size:1.2rem;margin-bottom:10px;color:#1A1E2E}
.module-card .card-body p{color:#666;font-size:.92rem;line-height:1.7;margin-bottom:14px}
.module-card .card-body .tag-list{display:flex;flex-wrap:wrap;gap:8px}
.module-card .card-body .tag-list span{background:#F5F0EB;color:#E8436F;padding:4px 12px;border-radius:15px;font-size:.8rem}

/* === 专家卡片 === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:14px;overflow:hidden;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .35s;padding-bottom:20px}
.expert-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(232,67,111,.1)}
.expert-card .expert-photo{width:100%;height:200px;object-fit:cover}
.expert-card h4{font-size:1.05rem;margin:14px 0 4px;color:#1A1E2E}
.expert-card .expert-title{color:#E8436F;font-size:.85rem;margin-bottom:8px}
.expert-card p{color:#666;font-size:.82rem;padding:0 16px;line-height:1.6}
.expert-card .expert-btns{display:flex;justify-content:center;gap:10px;margin-top:12px;padding:0 16px}
.expert-card .expert-btns a{padding:6px 16px;border-radius:20px;font-size:.8rem;font-weight:600;transition:all .3s}
.expert-card .expert-btns .btn-contact{background:linear-gradient(135deg,#E8436F,#FF6B9D);color:#fff}
.expert-card .expert-btns .btn-works{background:#F5F0EB;color:#E8436F}
.expert-card .expert-btns a:hover{transform:scale(1.05)}

/* === 合作品牌墙 === */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:30px;padding:20px 0}
.partner-wall .partner-item{width:140px;height:70px;background:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,.05);transition:all .3s;padding:10px}
.partner-wall .partner-item:hover{box-shadow:0 4px 16px rgba(232,67,111,.1);transform:scale(1.05)}
.partner-wall .partner-item span{font-size:.9rem;font-weight:600;color:#1A1E2E}

/* === 用户评价 === */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#fff;border-radius:14px;padding:28px;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .3s;position:relative}
.review-card:hover{box-shadow:0 8px 24px rgba(232,67,111,.1)}
.review-card::before{content:'\201C';position:absolute;top:12px;left:20px;font-size:3rem;color:rgba(232,67,111,.15);font-family:Georgia,serif;line-height:1}
.review-card .review-text{color:#555;font-size:.92rem;line-height:1.8;margin-bottom:16px;padding-top:10px}
.review-card .review-author{display:flex;align-items:center;gap:12px}
.review-card .review-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#E8436F,#FFB347);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}
.review-card .review-info .name{font-weight:600;color:#1A1E2E;font-size:.9rem}
.review-card .review-info .role{color:#999;font-size:.8rem}
.review-card .stars{color:#FFB347;font-size:.9rem;margin-bottom:8px}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:12px;margin-bottom:14px;box-shadow:0 2px 8px rgba(0,0,0,.04);overflow:hidden}
.faq-item .faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#1A1E2E;font-size:.98rem;transition:background .3s}
.faq-item .faq-q:hover{background:rgba(232,67,111,.03)}
.faq-item .faq-q .arrow{transition:transform .3s;color:#E8436F;font-size:1.2rem}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .35s ease;color:#666;font-size:.9rem;line-height:1.8}
.faq-item.open .faq-a{padding:0 24px 18px;max-height:500px}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#999}
.breadcrumb a{color:#E8436F}
.breadcrumb span{margin:0 6px;color:#ccc}

/* === 页脚 === */
.site-footer{background:#1A1E2E;color:rgba(255,255,255,.7);padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-col h4{color:#fff;font-size:1.05rem;margin-bottom:16px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:3px;background:linear-gradient(90deg,#E8436F,#FFB347);border-radius:2px}
.footer-col p{font-size:.88rem;line-height:1.8;margin-bottom:8px}
.footer-col a{color:rgba(255,255,255,.7);font-size:.88rem;display:block;padding:4px 0;transition:color .3s}
.footer-col a:hover{color:#FFB347}
.footer-col .footer-logo{height:36px;margin-bottom:12px}
.footer-qr{display:flex;gap:16px;margin-top:12px}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:100px;height:100px;border-radius:8px;border:2px solid rgba(255,255,255,.1)}
.footer-qr .qr-item p{font-size:.75rem;margin-top:6px;color:rgba(255,255,255,.5)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:.82rem}
.footer-bottom a{color:#FFB347}
.footer-share{display:flex;justify-content:center;gap:16px;margin-top:12px;margin-bottom:20px}
.footer-share a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.85rem;transition:all .3s}
.footer-share a:hover{background:#E8436F;transform:scale(1.1)}

/* === 社区功能模块 === */
.community-features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.community-feat{background:#fff;border-radius:12px;padding:24px;text-align:center;box-shadow:0 4px 12px rgba(0,0,0,.05);transition:all .3s}
.community-feat:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(232,67,111,.1)}
.community-feat .feat-icon{width:56px;height:56px;margin:0 auto 14px;background:linear-gradient(135deg,#E8436F,#FF6B9D);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:#fff}
.community-feat h4{font-size:1rem;margin-bottom:8px;color:#1A1E2E}
.community-feat p{color:#666;font-size:.85rem;line-height:1.6}

/* === How-To指南 === */
.howto-steps{display:flex;gap:24px;justify-content:center;flex-wrap:wrap}
.howto-step{background:#fff;border-radius:14px;padding:28px 24px;text-align:center;flex:1;min-width:200px;max-width:260px;box-shadow:0 4px 12px rgba(0,0,0,.05);position:relative}
.howto-step .step-num{width:40px;height:40px;background:linear-gradient(135deg,#E8436F,#FF6B9D);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;margin:0 auto 14px}
.howto-step h4{font-size:1rem;margin-bottom:8px;color:#1A1E2E}
.howto-step p{color:#666;font-size:.85rem;line-height:1.6}

/* === 内页通用 === */
.page-hero{background:linear-gradient(135deg,#1A1E2E,#2a2f42);padding:60px 0 40px;text-align:center;color:#fff}
.page-hero h1{font-size:2.2rem;color:#fff;margin-bottom:10px}
.page-hero p{color:rgba(255,255,255,.7);font-size:1rem}
.page-content{padding:40px 0 60px}
.page-content h2{font-size:1.6rem;color:#1A1E2E;margin:30px 0 16px}
.page-content p{color:#555;font-size:.95rem;line-height:1.8;margin-bottom:16px}

/* === 热门话题侧边栏 === */
.sidebar-topics{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 12px rgba(0,0,0,.05)}
.sidebar-topics h3{font-size:1.1rem;color:#1A1E2E;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid #F5F0EB}
.sidebar-topics .topic-item{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid #F5F0EB;transition:background .3s}
.sidebar-topics .topic-item:last-child{border-bottom:none}
.sidebar-topics .topic-item:hover{background:rgba(232,67,111,.03);border-radius:8px;padding-left:8px}
.sidebar-topics .topic-item .topic-num{width:24px;height:24px;background:linear-gradient(135deg,#E8436F,#FF6B9D);color:#fff;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;flex-shrink:0}
.sidebar-topics .topic-item:nth-child(n+4) .topic-num{background:#ccc}
.sidebar-topics .topic-item a{color:#2D2D3A;font-size:.88rem}
.sidebar-topics .topic-item a:hover{color:#E8436F}
.content-with-sidebar{display:grid;grid-template-columns:1fr 300px;gap:30px}

/* === 数据统计条 === */
.stats-bar{background:linear-gradient(135deg,#E8436F,#FF6B9D);padding:30px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;color:#fff}
.stat-item .stat-num{font-size:2.2rem;font-weight:700}
.stat-item .stat-label{font-size:.88rem;opacity:.85;margin-top:4px}

/* === 响应式 === */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .content-with-sidebar{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .header-inner{height:56px}
  .site-logo .logo-img{height:32px}
  .site-logo .favicon-img{display:inline-block;height:20px;width:20px}
  .main-nav{display:none;position:absolute;top:56px;left:0;right:0;background:#1A1E2E;flex-direction:column;padding:10px 0;box-shadow:0 4px 12px rgba(0,0,0,.2)}
  .main-nav.show{display:flex}
  .main-nav a{padding:12px 24px;border-bottom:1px solid rgba(255,255,255,.05)}
  .mobile-toggle{display:block}
  .hero-banner{height:380px}
  .hero-content h1{font-size:1.8rem}
  .video-grid{grid-template-columns:1fr}
  .module-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .community-features{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .section-padding{padding:40px 0}
  .section-title h2{font-size:1.5rem}
  .howto-steps{flex-direction:column;align-items:center}
}
@media(max-width:480px){
  .hero-banner{height:300px}
  .hero-content h1{font-size:1.4rem}
  .hero-content p{font-size:.9rem}
  .container{padding:0 15px}
}

/* === 动画 === */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.animate-in{animation:fadeInUp .6s ease forwards;opacity:0}

/* === 懒加载占位 === */
img[loading="lazy"]{background:#eee;min-height:100px}