/* ============================================
   里番动漫网站 修车改装视频社区 - 原创CSS v2
   配色：钛蓝#0F1932 + 银灰#C8D0DC + 亮红#DC1E1E + 冰蓝#3AAFFF
   ============================================ */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg-primary:#0B1120;
  --bg-secondary:#111B2E;
  --bg-card:#162036;
  --accent-red:#DC1E1E;
  --accent-blue:#3AAFFF;
  --accent-silver:#C8D0DC;
  --text-main:#E8ECF2;
  --text-muted:#8A94A6;
  --text-dark:#1A1A2E;
  --gradient-hero:linear-gradient(135deg,#0B1120 0%,#1A2744 50%,#0F1932 100%);
  --gradient-red:linear-gradient(135deg,#DC1E1E,#FF4444);
  --gradient-blue:linear-gradient(135deg,#3AAFFF,#1E90FF);
  --radius:10px;
  --shadow:0 4px 20px rgba(0,0,0,0.4);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg-primary);color:var(--text-main);line-height:1.7;overflow-x:hidden}
a{color:var(--accent-blue);text-decoration:none;transition:color .3s}
a:hover{color:var(--accent-red)}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* === 导航栏 === */
.site-header{background:rgba(11,17,32,0.95);backdrop-filter:blur(12px);position:fixed;top:0;left:0;width:100%;z-index:1000;border-bottom:1px solid rgba(58,175,255,0.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1200px;margin:0 auto}
.logo-link{display:flex;align-items:center;gap:10px}
.logo-link img{height:44px;width:auto}
.main-nav{display:flex;gap:6px}
.main-nav a{color:var(--text-main);padding:8px 14px;border-radius:6px;font-size:.9rem;font-weight:500;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:var(--accent-red);color:#fff}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* === 搜索框 === */
.search-bar{background:var(--bg-secondary);padding:12px 0;border-bottom:1px solid rgba(58,175,255,0.1)}
.search-bar .container{display:flex;justify-content:center}
.search-form{display:flex;max-width:560px;width:100%}
.search-form input{flex:1;padding:10px 18px;border:2px solid rgba(58,175,255,0.2);border-right:none;border-radius:var(--radius) 0 0 var(--radius);background:var(--bg-card);color:var(--text-main);font-size:.95rem;outline:none;transition:border-color .3s}
.search-form input:focus{border-color:var(--accent-blue)}
.search-form button{padding:10px 24px;background:var(--gradient-red);color:#fff;border:none;border-radius:0 var(--radius) var(--radius) 0;cursor:pointer;font-size:.95rem;font-weight:600;transition:opacity .3s}
.search-form button:hover{opacity:.85}

/* === Hero Banner === */
.hero-section{position:relative;margin-top:68px;min-height:520px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(0.4)}
.7gr2c0{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,17,32,0.6) 0%,rgba(11,17,32,0.9) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;padding:80px 20px;width:100%}
.pgtmjqvb{display:inline-block;background:var(--gradient-red);color:#fff;padding:6px 20px;border-radius:20px;font-size:.85rem;font-weight:600;margin-bottom:20px}
.hero-content h1{font-size:2.8rem;font-weight:800;margin-bottom:16px;line-height:1.3}
.hero-content h1 span{color:var(--accent-red)}
.hero-desc{font-size:1.1rem;color:var(--text-muted);max-width:700px;margin:0 auto 30px;line-height:1.8}
.206yqj0is{display:flex;justify-content:center;gap:50px;margin-top:30px}
.206yqj0i{text-align:center}
.206yqj0i .4mumrcq{font-size:2rem;font-weight:800;color:var(--accent-blue)}
.206yqj0i .jkr5iql{font-size:.85rem;color:var(--text-muted);margin-top:4px}
.hero-btns{display:flex;gap:16px;justify-content:center;margin-top:30px}
.btn-primary{display:inline-block;padding:12px 32px;background:var(--gradient-red);color:#fff;border-radius:var(--radius);font-weight:600;font-size:1rem;transition:transform .3s,box-shadow .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(220,30,30,0.4);color:#fff}
.btn-outline{display:inline-block;padding:12px 32px;border:2px solid var(--accent-blue);color:var(--accent-blue);border-radius:var(--radius);font-weight:600;font-size:1rem;transition:all .3s;background:transparent;cursor:pointer}
.btn-outline:hover{background:var(--accent-blue);color:#fff}

/* === 通用区块 === */
.section{padding:70px 0}
.yz54zz4h{background:var(--bg-secondary)}
.section-header{text-align:center;margin-bottom:50px}
.ljhy0{display:inline-block;background:rgba(58,175,255,0.12);color:var(--accent-blue);padding:4px 16px;border-radius:16px;font-size:.8rem;font-weight:600;margin-bottom:12px;letter-spacing:1px}
.section-header h2{font-size:2rem;font-weight:700;margin-bottom:12px}
.section-header h2 span{color:var(--accent-red)}
.section-header p{color:var(--text-muted);max-width:600px;margin:0 auto;font-size:1rem}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;transition:transform .3s,box-shadow .3s;border:1px solid rgba(58,175,255,0.08)}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,0.5)}
.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 .4s}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0.8);width:60px;height:60px;background:rgba(220,30,30,0.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .3s}
.play-btn::after{content:"";border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.video-card:hover .play-btn{opacity:1;transform:translate(-50%,-50%) scale(1)}
.2xfqwfe{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,0.8);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:16px}
.video-info h3{font-size:1rem;font-weight:600;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.j5zoic{display:flex;justify-content:space-between;color:var(--text-muted);font-size:.8rem}
.x99buf{color:var(--accent-blue);font-size:.75rem;margin-top:6px}

/* === 标签云 === */
.yxzqv{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:30px}
.l869u{background:var(--bg-card);color:var(--text-muted);padding:6px 16px;border-radius:20px;font-size:.85rem;border:1px solid rgba(58,175,255,0.12);transition:all .3s}
.l869u:hover{background:var(--accent-red);color:#fff;border-color:var(--accent-red)}

/* === 分类模块 === */
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.category-card{background:var(--bg-card);border-radius:var(--radius);padding:30px 20px;text-align:center;border:1px solid rgba(58,175,255,0.08);transition:all .3s}
.category-card:hover{border-color:var(--accent-red);transform:translateY(-4px)}
.category-icon{font-size:2.5rem;margin-bottom:14px}
.category-card h3{font-size:1.05rem;font-weight:600;margin-bottom:8px}
.category-card p{color:var(--text-muted);font-size:.85rem;line-height:1.6}

/* === AI赋能 === */
.197ykhu{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.7quwj{background:var(--bg-card);border-radius:var(--radius);padding:30px;border:1px solid rgba(58,175,255,0.08);transition:all .3s;position:relative;overflow:hidden}
.7quwj::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:var(--gradient-blue)}
.7quwj:hover{border-color:var(--accent-blue);transform:translateY(-4px)}
.7quwj h3{font-size:1.1rem;font-weight:600;margin-bottom:10px;color:var(--accent-blue)}
.7quwj p{color:var(--text-muted);font-size:.9rem;line-height:1.7}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.expert-card{background:var(--bg-card);border-radius:var(--radius);padding:24px;display:flex;gap:20px;align-items:center;border:1px solid rgba(58,175,255,0.08);transition:all .3s}
.expert-card:hover{border-color:var(--accent-red)}
.expert-avatar{width:100px;height:100px;border-radius:50%;object-fit:cover;border:3px solid var(--accent-red);flex-shrink:0}
.expert-info h3{font-size:1.1rem;font-weight:600;margin-bottom:4px}
.expert-info .title{color:var(--accent-blue);font-size:.85rem;margin-bottom:8px}
.expert-info p{color:var(--text-muted);font-size:.85rem;line-height:1.6}
.expert-links{display:flex;gap:10px;margin-top:10px}
.expert-links a{padding:4px 14px;border-radius:16px;font-size:.8rem;border:1px solid var(--accent-blue);color:var(--accent-blue);transition:all .3s}
.expert-links a:hover{background:var(--accent-blue);color:#fff}

/* === 社区JSON === */
.p415r2mm{background:#0D1117;border:1px solid rgba(58,175,255,0.15);border-radius:var(--radius);padding:20px;font-family:"Fira Code","Courier New",monospace;font-size:.85rem;line-height:1.8;overflow-x:auto;color:#C9D1D9}
.4bv1ga70{color:#79C0FF}
.kvkk9{color:#A5D6FF}
.yg00ahd{color:#56D364}
.lihx4u{color:#FF7B72}
.jm4t13j{color:#8B949E}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--bg-card);border-radius:var(--radius);margin-bottom:12px;border:1px solid rgba(58,175,255,0.08);overflow:hidden}
.faq-question{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;transition:background .3s}
.faq-question:hover{background:rgba(58,175,255,0.05)}
.faq-question::after{content:"+";font-size:1.4rem;color:var(--accent-blue);transition:transform .3s}
.faq-item.active .faq-question::after{transform:rotate(45deg);color:var(--accent-red)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-answer p{padding-bottom:18px;color:var(--text-muted);line-height:1.8;font-size:.95rem}

/* === 用户评价 === */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:var(--bg-card);border-radius:var(--radius);padding:24px;border:1px solid rgba(58,175,255,0.08)}
.jutcna{color:#FFD700;font-size:1.1rem;margin-bottom:10px}
.review-text{color:var(--text-muted);font-size:.95rem;line-height:1.7;margin-bottom:14px;font-style:italic}
.fjxxk{font-weight:600;font-size:.9rem;color:var(--accent-blue)}
.i50hb{color:var(--text-muted);font-size:.8rem;margin-top:4px}

/* === 统计数据 === */
.h9kh8{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.in9648{background:var(--bg-card);border-radius:var(--radius);padding:30px 20px;border:1px solid rgba(58,175,255,0.08)}
.8tkcng{font-size:2.2rem;font-weight:800;color:var(--accent-red);margin-bottom:6px}
.oojn0hp7{color:var(--text-muted);font-size:.9rem}

/* === 步骤指南 === */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{background:var(--bg-card);border-radius:var(--radius);padding:30px 20px;text-align:center;border:1px solid rgba(58,175,255,0.08);position:relative}
.yj694u{width:48px;height:48px;background:var(--gradient-red);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;margin:0 auto 16px}
.step-card h3{font-size:1rem;font-weight:600;margin-bottom:8px}
.step-card p{color:var(--text-muted);font-size:.85rem;line-height:1.6}

/* === 品牌墙 === */
.1ma0h{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.1ma0h-item{background:var(--bg-card);padding:16px 28px;border-radius:var(--radius);border:1px solid rgba(58,175,255,0.08);color:var(--text-muted);font-weight:600;font-size:.95rem;transition:all .3s}
.1ma0h-item:hover{border-color:var(--accent-red);color:var(--accent-red)}

/* === 分享栏 === */
.r30ti3b{display:flex;gap:12px;justify-content:center;margin-top:30px}
.k9asqv{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;color:#fff;transition:transform .3s}
.k9asqv:hover{transform:scale(1.15);color:#fff}
.0oenc1g{background:#07C160}
.6k1gir{background:#E6162D}
.07xc9upr{background:#161823}
.ch8ofp{background:#00A1D6}

/* === 联系方式 === */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.contact-card{background:var(--bg-card);border-radius:var(--radius);padding:24px;border:1px solid rgba(58,175,255,0.08)}
.contact-card h3{font-size:1.1rem;font-weight:600;margin-bottom:14px;color:var(--accent-blue)}
.contact-item{display:flex;gap:10px;margin-bottom:10px;color:var(--text-muted);font-size:.9rem}
.contact-label{font-weight:600;color:var(--text-main);min-width:70px}
.sw3z7{display:flex;gap:24px;margin-top:20px}
.3b9mzte{text-align:center}
.3b9mzte img{width:120px;height:120px;border-radius:var(--radius);border:2px solid rgba(58,175,255,0.15)}
.3b9mzte p{margin-top:8px;font-size:.8rem;color:var(--text-muted)}

/* === 页脚 === */
.site-footer{background:var(--bg-secondary);border-top:1px solid rgba(58,175,255,0.1);padding:50px 0 20px}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:40px}
.footer-brand img{height:40px;margin-bottom:14px}
.footer-brand-desc{color:var(--text-muted);font-size:.85rem;line-height:1.7}
.footer-col h4{font-size:1rem;font-weight:600;margin-bottom:14px;color:var(--accent-blue)}
.footer-col a{display:block;color:var(--text-muted);font-size:.85rem;margin-bottom:8px;transition:color .3s}
.footer-col a:hover{color:var(--accent-red)}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(58,175,255,0.08);color:var(--text-muted);font-size:.8rem}
.footer-bottom a{color:var(--accent-blue)}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:.85rem;color:var(--text-muted)}
.breadcrumb a{color:var(--accent-blue)}
.breadcrumb span{margin:0 8px;color:var(--text-muted)}

/* === 视频弹窗 === */
.video-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.85);z-index:9999;align-items:center;justify-content:center}
.video-modal.active{display:flex}
.modal-content{background:var(--bg-card);border-radius:var(--radius);padding:20px;max-width:800px;width:90%;position:relative}
.modal-close{position:absolute;top:-12px;right:-12px;width:36px;height:36px;background:var(--accent-red);color:#fff;border:none;border-radius:50%;font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center}
.modal-video{width:100%;aspect-ratio:16/9;background:#000;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:1.1rem}

/* === 动画 === */
.3nw4zd{opacity:0;transform:translateY(30px);transition:all .6s ease}
.3nw4zd.visible{opacity:1;transform:translateY(0)}
.560tloq6{transition-delay:.1s}
.zqggx8v{transition-delay:.2s}
.vrw1y43{transition-delay:.3s}
.6lgs2{transition-delay:.4s}

/* === 响应式 === */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .category-grid{grid-template-columns:repeat(2,1fr)}
  .197ykhu{grid-template-columns:repeat(2,1fr)}
  .h9kh8{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .main-nav{display:none;position:absolute;top:68px;left:0;width:100%;background:var(--bg-primary);flex-direction:column;padding:20px;border-bottom:1px solid rgba(58,175,255,0.15)}
  .main-nav.active{display:flex}
  .nav-toggle{display:block}
  .hero-content h1{font-size:1.8rem}
  .206yqj0is{gap:24px}
  .206yqj0i .4mumrcq{font-size:1.4rem}
  .video-grid{grid-template-columns:1fr}
  .category-grid{grid-template-columns:1fr}
  .197ykhu{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .expert-card{flex-direction:column;text-align:center}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .h9kh8{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .section-header h2{font-size:1.5rem}
  .hero-btns{flex-direction:column;align-items:center}
}