/* ========================================
   猎奇 - 汽车改装视频社区 主样式表
   trendmeta.cn | 原创设计
   ======================================== */

/* CSS Reset & Base */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --color-primary:#1A1A2E;
  --color-secondary:#E94560;
  --color-accent:#FFD700;
  --color-bg:#0F0F1A;
  --color-text:#F5F5F5;
  --color-muted:#A0A0B8;
  --color-card:#16213E;
  --color-card-hover:#1C2A4A;
  --color-border:#2A2A4A;
  --font-main:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --max-width:1280px;
  --radius:12px;
  --shadow:0 4px 24px rgba(0,0,0,0.3);
  --transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-main);background:var(--color-bg);color:var(--color-text);line-height:1.7;overflow-x:hidden}
a{color:var(--color-accent);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--color-secondary)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}

/* 干扰标签隐藏 */
.kkt-noise{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;opacity:0;pointer-events:none}

/* ========== 顶部导航 ========== */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(15,15,26,0.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--color-border);transition:var(--transition)}
.site-header.scrolled{background:rgba(15,15,26,0.98);box-shadow:0 2px 20px rgba(0,0,0,0.5)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;max-width:var(--max-width);margin:0 auto;padding:0 20px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:48px;width:auto}
.logo-wrap .brand-name{font-size:1.4rem;font-weight:700;color:var(--color-accent);letter-spacing:2px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 14px;font-size:0.9rem;color:var(--color-text);border-radius:8px;transition:var(--transition);white-space:nowrap}
.main-nav a:hover,.main-nav a.active{background:var(--color-secondary);color:#fff}
.mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.mobile-toggle span{width:24px;height:2px;background:var(--color-text);transition:var(--transition)}

/* 搜索框 */
.search-bar{background:var(--color-primary);border-bottom:1px solid var(--color-border);padding:12px 0;margin-top:72px}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:10px 18px;background:var(--color-card);border:1px solid var(--color-border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);color:var(--color-text);font-size:0.95rem;outline:none;transition:var(--transition)}
.search-box input:focus{border-color:var(--color-accent)}
.search-box input::placeholder{color:var(--color-muted)}
.search-box button{padding:10px 24px;background:var(--color-secondary);color:#fff;border:none;border-radius:0 var(--radius) var(--radius) 0;cursor:pointer;font-size:0.95rem;transition:var(--transition)}
.search-box button:hover{background:#d63a52}

/* ========== Hero Banner ========== */
.hero-section{position:relative;height:85vh;min-height:500px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.hero-section .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:opacity 1.2s ease}
.hero-section .hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,15,26,0.85) 0%,rgba(26,26,46,0.6) 50%,rgba(233,69,96,0.2) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;padding:0 20px;max-width:800px}
.hero-content h1{font-size:3.2rem;font-weight:800;margin-bottom:16px;line-height:1.2}
.hero-content h1 .highlight{color:var(--color-accent)}
.hero-content p{font-size:1.2rem;color:var(--color-muted);margin-bottom:32px;line-height:1.8}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:var(--radius);font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition);border:none}
.btn-primary{background:var(--color-secondary);color:#fff}
.btn-primary:hover{background:#d63a52;transform:translateY(-2px);box-shadow:0 8px 24px rgba(233,69,96,0.4);color:#fff}
.btn-outline{background:transparent;color:var(--color-accent);border:2px solid var(--color-accent)}
.btn-outline:hover{background:var(--color-accent);color:var(--color-primary);transform:translateY(-2px)}

/* ========== 通用Section ========== */
.section{padding:80px 0}
.section-header{text-align:center;margin-bottom:56px}
.section-header h2{font-size:2.2rem;font-weight:700;margin-bottom:12px;position:relative;display:inline-block}
.section-header h2::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:var(--color-secondary);border-radius:2px}
.section-header p{color:var(--color-muted);font-size:1.05rem;margin-top:20px;max-width:600px;margin-left:auto;margin-right:auto}
.section-alt{background:var(--color-primary)}

/* ========== 视频卡片 ========== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.video-card{background:var(--color-card);border-radius:var(--radius);overflow:hidden;transition:var(--transition);position:relative;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.video-card .thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.video-card:hover .thumb img{transform:scale(1.08)}
.video-card .play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:64px;height:64px;background:rgba(233,69,96,0.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--transition);z-index:2}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(1)}
.play-btn::after{content:'';border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-card .card-body{padding:16px}
.video-card .card-body h3{font-size:1.05rem;font-weight:600;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-meta{display:flex;align-items:center;gap:16px;color:var(--color-muted);font-size:0.85rem}
.video-card .card-meta span{display:flex;align-items:center;gap:4px}
.video-card .tag{display:inline-block;padding:3px 10px;background:rgba(233,69,96,0.15);color:var(--color-secondary);border-radius:20px;font-size:0.78rem;margin-top:8px}
.video-card .duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,0.8);color:#fff;padding:2px 8px;border-radius:4px;font-size:0.78rem;z-index:2}

/* ========== 模块卡片网格 ========== */
.module-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.module-card{background:var(--color-card);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:var(--transition);border:1px solid transparent}
.module-card:hover{border-color:var(--color-secondary);transform:translateY(-4px);box-shadow:var(--shadow)}
.module-card .icon{width:64px;height:64px;margin:0 auto 20px;background:linear-gradient(135deg,var(--color-secondary),var(--color-accent));border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem}
.module-card h3{font-size:1.1rem;font-weight:600;margin-bottom:10px}
.module-card p{color:var(--color-muted);font-size:0.9rem;line-height:1.6}

/* ========== 专家展示 ========== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:32px}
.expert-card{background:var(--color-card);border-radius:var(--radius);overflow:hidden;transition:var(--transition)}
.expert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.expert-card .avatar{width:100%;height:280px;overflow:hidden}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.expert-card:hover .avatar img{transform:scale(1.05)}
.expert-card .info{padding:24px}
.expert-card .info h3{font-size:1.15rem;font-weight:700;margin-bottom:4px}
.expert-card .info .role{color:var(--color-secondary);font-size:0.9rem;margin-bottom:12px}
.expert-card .info p{color:var(--color-muted);font-size:0.88rem;line-height:1.6;margin-bottom:16px}
.expert-card .info .badges{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.expert-card .info .badge{padding:3px 10px;background:rgba(255,215,0,0.1);color:var(--color-accent);border-radius:20px;font-size:0.78rem}
.expert-card .actions{display:flex;gap:10px}
.expert-card .actions a{flex:1;text-align:center;padding:8px;border-radius:8px;font-size:0.85rem;transition:var(--transition)}
.expert-card .actions .btn-contact{background:var(--color-secondary);color:#fff}
.expert-card .actions .btn-work{background:rgba(255,215,0,0.15);color:var(--color-accent)}

/* ========== 合作品牌 ========== */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:32px;align-items:center}
.brand-wall .brand-item{width:140px;height:80px;background:var(--color-card);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;padding:16px;transition:var(--transition);border:1px solid var(--color-border)}
.brand-wall .brand-item:hover{border-color:var(--color-accent);transform:scale(1.05)}
.brand-wall .brand-item span{color:var(--color-muted);font-size:0.85rem;font-weight:600;text-align:center}

/* ========== FAQ ========== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--color-card);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;border:1px solid var(--color-border);transition:var(--transition)}
.faq-item:hover{border-color:var(--color-secondary)}
.faq-item .faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;transition:var(--transition)}
.faq-item .faq-q::after{content:'+';font-size:1.4rem;color:var(--color-accent);transition:var(--transition)}
.faq-item.active .faq-q::after{content:'-';color:var(--color-secondary)}
.faq-item .faq-a{max-height:0;overflow:hidden;transition:max-height 0.4s ease;padding:0 24px}
.faq-item.active .faq-a{max-height:300px;padding:0 24px 18px}
.faq-item .faq-a p{color:var(--color-muted);font-size:0.92rem;line-height:1.7}

/* ========== 用户评论 ========== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.review-card{background:var(--color-card);border-radius:var(--radius);padding:28px;transition:var(--transition);border:1px solid var(--color-border)}
.review-card:hover{border-color:var(--color-accent);transform:translateY(-3px)}
.review-card .stars{color:var(--color-accent);font-size:1rem;margin-bottom:12px;letter-spacing:2px}
.review-card .review-text{color:var(--color-muted);font-size:0.92rem;line-height:1.7;margin-bottom:16px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:12px}
.review-card .reviewer-avatar{width:44px;height:44px;border-radius:50%;background:var(--color-secondary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem;color:#fff}
.review-card .reviewer-info .name{font-weight:600;font-size:0.9rem}
.review-card .reviewer-info .date{color:var(--color-muted);font-size:0.8rem}

/* ========== 联系我们 ========== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.contact-card{background:var(--color-card);border-radius:var(--radius);padding:28px;text-align:center;transition:var(--transition);border:1px solid var(--color-border)}
.contact-card:hover{border-color:var(--color-secondary)}
.contact-card .contact-icon{font-size:2rem;margin-bottom:12px}
.contact-card h4{font-size:1rem;margin-bottom:8px;color:var(--color-accent)}
.contact-card p{color:var(--color-muted);font-size:0.88rem;line-height:1.6}

/* ========== 社交分享 ========== */
.share-bar{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;padding:24px 0}
.share-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--radius);font-size:0.9rem;transition:var(--transition);cursor:pointer;border:1px solid var(--color-border);color:var(--color-text);background:var(--color-card)}
.share-btn:hover{transform:translateY(-2px);border-color:var(--color-secondary);color:var(--color-secondary)}

/* ========== 页脚 ========== */
.site-footer{background:var(--color-primary);border-top:1px solid var(--color-border);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px;margin-bottom:32px}
.footer-col h4{font-size:1rem;font-weight:700;margin-bottom:16px;color:var(--color-accent)}
.footer-col p,.footer-col a{color:var(--color-muted);font-size:0.88rem;line-height:1.8}
.footer-col a:hover{color:var(--color-secondary)}
.footer-col .qr-wrap{display:flex;gap:16px;margin-top:12px}
.footer-col .qr-wrap img{width:120px;height:120px;border-radius:8px;object-fit:cover}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid var(--color-border);color:var(--color-muted);font-size:0.85rem}
.footer-bottom .update-time{margin-top:6px;font-size:0.8rem}

/* ========== 面包屑 ========== */
.breadcrumb{padding:16px 0;font-size:0.88rem;color:var(--color-muted)}
.breadcrumb a{color:var(--color-accent)}
.breadcrumb span{margin:0 8px;color:var(--color-border)}

/* ========== How-To 指南 ========== */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px;max-width:1000px;margin:0 auto}
.howto-step{background:var(--color-card);border-radius:var(--radius);padding:28px;text-align:center;position:relative;transition:var(--transition)}
.howto-step:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.howto-step .step-num{width:48px;height:48px;border-radius:50%;background:var(--color-secondary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;margin:0 auto 16px}
.howto-step h4{font-size:1rem;margin-bottom:8px}
.howto-step p{color:var(--color-muted);font-size:0.88rem;line-height:1.6}

/* ========== 内页通用 ========== */
.page-hero{padding:120px 0 60px;text-align:center;background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-bg) 100%)}
.page-hero h1{font-size:2.4rem;font-weight:800;margin-bottom:12px}
.page-hero p{color:var(--color-muted);font-size:1.05rem;max-width:600px;margin:0 auto}

/* ========== 响应式 ========== */
@media(max-width:968px){
  .main-nav{display:none;position:absolute;top:72px;left:0;width:100%;background:var(--color-primary);flex-direction:column;padding:16px;border-bottom:1px solid var(--color-border)}
  .main-nav.show{display:flex}
  .mobile-toggle{display:flex}
  .hero-content h1{font-size:2rem}
  .hero-section{height:65vh}
  .section{padding:48px 0}
  .section-header h2{font-size:1.6rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
  .expert-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:580px){
  .header-inner{height:60px}
  .logo-wrap img{height:36px}
  .logo-wrap .brand-name{font-size:1.1rem}
  .hero-content h1{font-size:1.6rem}
  .hero-content p{font-size:1rem}
  .hero-btns{flex-direction:column;align-items:center}
  .btn{padding:12px 24px;font-size:0.9rem}
  .video-grid{grid-template-columns:1fr}
  .module-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .search-bar{margin-top:60px}
}

/* ========== 动画 ========== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.animate-in{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease}
.animate-in.visible{opacity:1;transform:translateY(0)}

/* ========== 懒加载占位 ========== */
img[data-src]{opacity:0;transition:opacity 0.5s ease}
img[data-src].loaded,img:not([data-src]){opacity:1}