/* ============================================
   小马拉大车 - 原创样式表
   品牌色系：甜心粉 #E8456B / 暖橘 #FF7E5F / 梦幻紫 #6C5CE7
   ============================================ */

/* --- CSS Reset & Base --- */
*,*::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;color:#2D2D3A;background:#F8F0F4;line-height:1.7;overflow-x:hidden}
a{color:#E8456B;text-decoration:none;transition:color .3s}
a:hover{color:#FF7E5F}
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}

/* --- Container --- */
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* --- Header / Navigation --- */
.site-header{background:linear-gradient(135deg,#1A1A2E 0%,#2D1B3D 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 20px rgba(0,0,0,.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-text{color:#fff;font-size:1.3rem;font-weight:700}
.logo-text span{color:#E8456B}

.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{color:#ddd;padding:12px 18px;font-size:.95rem;transition:all .3s;position:relative}
.main-nav a:hover,.main-nav a.active{color:#E8456B}
.main-nav a::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:linear-gradient(90deg,#E8456B,#FF7E5F);transition:width .3s}
.main-nav a:hover::after,.main-nav a.active::after{width:60%}

.mobile-menu-btn{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* --- Search Bar --- */
.search-bar{background:linear-gradient(90deg,#E8456B,#FF7E5F);padding:12px 0}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%;background:#fff;border-radius:25px;overflow:hidden;box-shadow:0 2px 10px rgba(232,69,107,.3)}
.search-box input{flex:1;border:none;padding:10px 20px;font-size:.95rem;outline:none;background:transparent}
.search-box button{background:linear-gradient(135deg,#E8456B,#FF7E5F);color:#fff;border:none;padding:10px 25px;cursor:pointer;font-size:.9rem;transition:opacity .3s}
.search-box button:hover{opacity:.85}

/* --- Hero Banner --- */
.hero-section{position:relative;height:520px;overflow:hidden;background:#1A1A2E}
.hero-bg{width:100%;height:100%;object-fit:cover;opacity:.6}
.hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(180deg,rgba(26,26,46,.3) 0%,rgba(26,26,46,.8) 100%);display:flex;align-items:center;justify-content:center;text-align:center;flex-direction:column;padding:20px}
.hero-overlay h1{color:#fff;font-size:2.8rem;margin-bottom:15px;text-shadow:0 2px 10px rgba(0,0,0,.5)}
.hero-overlay h1 span{color:#E8456B}
.hero-overlay p{color:#ddd;font-size:1.15rem;max-width:650px;margin-bottom:25px}
.hero-btn{display:inline-block;background:linear-gradient(135deg,#E8456B,#FF7E5F);color:#fff;padding:14px 36px;border-radius:30px;font-size:1rem;font-weight:600;transition:transform .3s,box-shadow .3s;box-shadow:0 4px 15px rgba(232,69,107,.4)}
.hero-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(232,69,107,.6);color:#fff}

/* --- Section Common --- */
.section{padding:60px 0}
.section-dark{background:#1A1A2E;color:#fff}
.section-alt{background:#fff}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;color:#2D2D3A;margin-bottom:8px}
.section-dark .section-title h2{color:#fff}
.section-title p{color:#8E8EA0;font-size:1rem}
.section-title h2 span{color:#E8456B}
.section-tag{display:inline-block;background:linear-gradient(135deg,#E8456B,#FF7E5F);color:#fff;padding:4px 14px;border-radius:15px;font-size:.8rem;margin-bottom:10px}

/* --- Video Card Grid --- */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:transform .3s,box-shadow .3s;cursor:pointer}
.video-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(232,69,107,.15)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:4/3}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:50px;height:50px;background:rgba(232,69,107,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.play-btn::after{content:"";border-left:18px solid #fff;border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.video-card:hover .play-btn{opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:12px 15px}
.video-info h3{font-size:.95rem;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:12px;color:#8E8EA0;font-size:.8rem}
.video-meta span{display:flex;align-items:center;gap:3px}

/* --- Service Cards --- */
.vsihuvwn{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.tpwhh07c{background:#fff;border-radius:12px;padding:30px 25px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.06);transition:transform .3s;border:1px solid #f0e0e8}
.tpwhh07c:hover{transform:translateY(-5px);border-color:#E8456B}
.e757p{width:60px;height:60px;margin:0 auto 15px;background:linear-gradient(135deg,#E8456B,#FF7E5F);border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:#fff}
.tpwhh07c h3{font-size:1.1rem;margin-bottom:10px;color:#2D2D3A}
.tpwhh07c p{color:#8E8EA0;font-size:.9rem;line-height:1.6}

/* --- AI Section --- */
.447uyde{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.6nnctv{background:linear-gradient(135deg,#1A1A2E,#2D1B3D);border-radius:12px;padding:30px;border:1px solid rgba(108,92,231,.3);transition:transform .3s,border-color .3s}
.6nnctv:hover{transform:translateY(-5px);border-color:#6C5CE7}
.6nnctv .d5bum{font-size:2.5rem;margin-bottom:15px}
.6nnctv h3{color:#fff;font-size:1.1rem;margin-bottom:10px}
.6nnctv p{color:#aaa;font-size:.9rem;line-height:1.6}

/* --- Expert Cards --- */
.0pc7y8{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.jngxzfs{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);text-align:center;transition:transform .3s}
.jngxzfs:hover{transform:translateY(-5px)}
.rc1t90yl{width:100px;height:100px;border-radius:50%;margin:25px auto 15px;object-fit:cover;border:3px solid #E8456B}
.jngxzfs h3{font-size:1rem;margin-bottom:4px}
.jngxzfs .role{color:#E8456B;font-size:.85rem;margin-bottom:8px}
.jngxzfs p{color:#8E8EA0;font-size:.85rem;padding:0 15px;margin-bottom:15px}
.ud8l9{display:flex;gap:8px;justify-content:center;padding:0 15px 20px}
.ud8l9 a{padding:6px 14px;border-radius:20px;font-size:.8rem;border:1px solid #E8456B;color:#E8456B;transition:all .3s}
.ud8l9 a:hover{background:#E8456B;color:#fff}

/* --- Partners --- */
.86lc6{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.zxtnn5rt{background:#fff;padding:15px 25px;border-radius:10px;box-shadow:0 2px 10px rgba(0,0,0,.05);font-size:1rem;font-weight:600;color:#666;transition:transform .3s}
.zxtnn5rt:hover{transform:scale(1.05)}

/* --- Reviews --- */
.hwtiwa{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.7phtfb{background:#fff;border-radius:12px;padding:25px;box-shadow:0 4px 15px rgba(0,0,0,.06);border-left:4px solid #E8456B}
.7phtfb .stars{color:#FF7E5F;margin-bottom:8px;font-size:1rem}
.7phtfb p{color:#555;font-size:.9rem;line-height:1.7;margin-bottom:10px;font-style:italic}
.7phtfb .4pi2f0mv{display:flex;align-items:center;gap:8px;font-size:.85rem;color:#8E8EA0}
.7phtfb .4pi2f0mv strong{color:#2D2D3A}

/* --- FAQ --- */
.w3484sr0{max-width:800px;margin:0 auto}
.b9ygv{background:#fff;border-radius:10px;margin-bottom:12px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.xvvt4{padding:18px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:.95rem;transition:background .3s}
.xvvt4:hover{background:#FFF5F7}
.xvvt4 .arrow{transition:transform .3s;color:#E8456B;font-size:1.2rem}
.faq-item.active .xvvt4 .arrow{transform:rotate(180deg)}
.ruq7a4m6{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 20px}
.faq-item.active .ruq7a4m6{max-height:300px;padding:0 20px 18px}
.ruq7a4m6 p{color:#666;font-size:.9rem;line-height:1.7}

/* --- Contact Section --- */
.ziik0{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.56gxj{background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 15px rgba(0,0,0,.06)}
.56gxj h3{font-size:1.2rem;margin-bottom:15px;color:#2D2D3A}
.0d931rc{display:flex;align-items:flex-start;gap:12px;margin-bottom:15px;font-size:.9rem;color:#555}
.0d931rc .icon{width:36px;height:36px;background:linear-gradient(135deg,#E8456B,#FF7E5F);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;font-size:.9rem}
.s8qvoje{display:flex;gap:25px;justify-content:center;flex-wrap:wrap}
.20t29j8{text-align:center}
.20t29j8 img{width:150px;height:150px;border-radius:10px;margin-bottom:8px}
.20t29j8 p{font-size:.85rem;color:#666}

/* --- How To Join --- */
.uvs9f0{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px}
.ho5alvs7{text-align:center;padding:20px}
.lb8uf7x{width:45px;height:45px;background:linear-gradient(135deg,#E8456B,#FF7E5F);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;margin:0 auto 12px}
.ho5alvs7 h4{font-size:.95rem;margin-bottom:6px}
.ho5alvs7 p{color:#8E8EA0;font-size:.85rem}

/* --- Community Section --- */
.muw9an{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.j7hp80ys{background:linear-gradient(135deg,rgba(232,69,107,.08),rgba(255,126,95,.05));border:1px solid rgba(232,69,107,.15);border-radius:12px;padding:25px;text-align:center;transition:transform .3s}
.j7hp80ys:hover{transform:translateY(-3px)}
.j7hp80ys .evkkt5f{font-size:2.2rem;margin-bottom:12px}
.j7hp80ys h3{font-size:1rem;margin-bottom:8px}
.j7hp80ys p{color:#8E8EA0;font-size:.85rem}

/* --- Share Buttons --- */
.cndhk{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.tju3xece{padding:8px 18px;border-radius:20px;font-size:.85rem;color:#fff;transition:transform .3s}
.tju3xece:hover{transform:scale(1.05);color:#fff}
.share-btn.wechat{background:#07C160}
.share-btn.weibo{background:#E6162D}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00A1D6}

/* --- Footer --- */
.site-footer{background:#1A1A2E;color:#aaa;padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-brand p{font-size:.9rem;line-height:1.7;margin-top:10px}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:15px;position:relative;padding-bottom:8px}
.footer-col h4::after{content:"";position:absolute;bottom:0;left:0;width:30px;height:2px;background:#E8456B}
.footer-col a{display:block;color:#aaa;font-size:.85rem;margin-bottom:8px;transition:color .3s}
.footer-col a:hover{color:#E8456B}
.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:#8E8EA0;margin-top:5px}

/* --- Breadcrumb --- */
.breadcrumb{padding:12px 0;font-size:.85rem;color:#8E8EA0}
.breadcrumb a{color:#E8456B}
.breadcrumb span{margin:0 6px}

/* --- Inner Page --- */
.page-hero{background:linear-gradient(135deg,#1A1A2E,#2D1B3D);padding:50px 0;text-align:center}
.page-hero h1{color:#fff;font-size:2rem;margin-bottom:8px}
.page-hero h1 span{color:#E8456B}
.page-hero p{color:#aaa;font-size:1rem}
.page-content{padding:40px 0}

/* --- Tags --- */
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.tag{background:#FFF5F7;color:#E8456B;padding:4px 12px;border-radius:15px;font-size:.8rem;border:1px solid rgba(232,69,107,.2)}

/* --- Responsive --- */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .0pc7y8{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .mobile-menu-btn{display:block}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#1A1A2E;flex-direction:column;padding:10px 0;box-shadow:0 5px 15px rgba(0,0,0,.3)}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 20px;border-bottom:1px solid rgba(255,255,255,.05)}
  .hero-section{height:380px}
  .hero-overlay h1{font-size:1.8rem}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .vsihuvwn,.447uyde,.muw9an{grid-template-columns:1fr}
  .0pc7y8{grid-template-columns:repeat(2,1fr)}
  .hwtiwa{grid-template-columns:1fr}
  .ziik0{grid-template-columns:1fr}
  .uvs9f0{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:40px 0}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .0pc7y8{grid-template-columns:1fr}
  .uvs9f0{grid-template-columns:1fr}
  .hero-overlay h1{font-size:1.5rem}
}

/* --- Lazy Load Placeholder --- */
img[loading="lazy"]{background:#f0e0e8;min-height:100px}

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