/* ============================================
   91 精神小妹 - 原创样式表
   品牌色系：赛车红 #E63946 / 琥珀金 #F4A261 / 机械蓝 #457B9D
   背景色系：碳纤维黑 #1D1D2B / 深钢灰 #2B2D42
   ============================================ */

/* === 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","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:#1D1D2B;color:#F1FAEE;line-height:1.7;overflow-x:hidden}
a{color:#E63946;text-decoration:none;transition:color .3s}
a:hover{color:#F4A261}
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}
h5{font-size:16px;margin-bottom:16px;color:#E63946}
h6{font-size:14px;color:#A8DADC;font-weight:600}

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

/* === 头部导航 === */
.site-header{background:rgba(43,45,66,.97);position:sticky;top:0;z-index:1000;border-bottom:1px solid rgba(230,57,70,.2);backdrop-filter:blur(12px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;max-width:1200px;margin:0 auto;padding:0 20px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{width:42px;height:42px;border-radius:8px}
.logo-wrap .brand-name{font-size:22px;font-weight:800;background:linear-gradient(135deg,#E63946,#F4A261);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 16px;border-radius:20px;font-size:15px;color:#F1FAEE;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:linear-gradient(135deg,#E63946,#F4A261);color:#fff}
.nav-toggle{display:none;background:none;border:none;color:#F1FAEE;font-size:26px;cursor:pointer}

/* === 搜索栏 === */
.search-bar-wrap{background:linear-gradient(135deg,rgba(230,57,70,.08),rgba(244,162,97,.08));padding:14px 0;border-bottom:1px solid rgba(230,57,70,.1)}
.search-bar{max-width:680px;margin:0 auto;display:flex;gap:10px;padding:0 20px}
.search-bar input{flex:1;padding:10px 20px;border-radius:25px;border:2px solid rgba(230,57,70,.3);background:rgba(43,45,66,.8);color:#F1FAEE;font-size:15px;outline:none;transition:border-color .3s}
.search-bar input:focus{border-color:#E63946}
.search-bar button{padding:10px 28px;border-radius:25px;border:none;background:linear-gradient(135deg,#E63946,#F4A261);color:#fff;font-size:15px;cursor:pointer;font-weight:600;transition:transform .2s}
.search-bar button:hover{transform:scale(1.05)}

/* === Hero 横幅 === */
.hero-section{position:relative;height:540px;overflow:hidden;display:flex;align-items:center}
.545ct{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.5)}
.x4ae07{position:absolute;inset:0;background:linear-gradient(180deg,rgba(29,29,43,.2) 0%,rgba(29,29,43,.88) 100%)}
.tnqe5{position:relative;z-index:2;text-align:center;width:100%;padding:0 20px}
.tnqe5 h1{font-size:44px;margin-bottom:14px;background:linear-gradient(135deg,#E63946,#F4A261);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.dy2h5d{font-size:20px;color:#A8DADC;margin-bottom:24px}
.juzhtms{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.juzhtms span{padding:6px 18px;border-radius:20px;background:rgba(230,57,70,.15);color:#E63946;font-size:14px;border:1px solid rgba(230,57,70,.3)}
.33s5v55n{display:inline-block;margin-top:24px;padding:14px 40px;border-radius:30px;background:linear-gradient(135deg,#E63946,#F4A261);color:#fff;font-size:17px;font-weight:700;transition:transform .3s,box-shadow .3s}
.33s5v55n:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(230,57,70,.4);color:#fff}

/* === 统计栏 === */
.51u8ew{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:30px 0;text-align:center}
.ls4l36h{padding:20px;background:rgba(43,45,66,.6);border-radius:12px;border:1px solid rgba(230,57,70,.1)}
.3q21drgj{font-size:32px;font-weight:800;background:linear-gradient(135deg,#E63946,#F4A261);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.yxody1k{font-size:14px;color:#A8DADC;margin-top:6px}

/* === 通用标题 === */
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:30px;margin-bottom:10px;color:#F1FAEE}
.section-title p{font-size:16px;color:#A8DADC}

/* === 视频播放器 === */
.i2ixhbbv{max-width:800px;margin:0 auto;border-radius:16px;overflow:hidden;border:2px solid rgba(230,57,70,.2)}
.i2ixhbbv video{width:100%;display:block}
.xc3536{padding:14px 20px;background:rgba(43,45,66,.8);font-size:14px;color:#A8DADC;text-align:center}

/* === 视频卡片网格 === */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.video-card{background:#2B2D42;border-radius:14px;overflow:hidden;transition:transform .3s,box-shadow .3s;cursor:pointer;text-decoration:none;color:#F1FAEE;display:block}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(230,57,70,.2);color:#F1FAEE}
.video-card .thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.video-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .thumb img{transform:scale(1.08)}
.video-card .play-icon{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(29,29,43,.5);opacity:0;transition:opacity .3s}
.video-card:hover .play-icon{opacity:1}
.video-card .play-icon span{width:56px;height:56px;background:rgba(230,57,70,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff}
.video-card .card-info{padding:14px}
.video-card .card-info h3{font-size:15px;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .meta{display:flex;justify-content:space-between;font-size:12px;color:#A8DADC}
.video-card .tag{display:inline-block;padding:3px 10px;border-radius:12px;background:rgba(230,57,70,.12);color:#E63946;font-size:12px;margin-top:6px}

/* === 分类标签 === */
.yq937sm{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:30px}
.yq937sm .tab{padding:8px 22px;border-radius:22px;background:rgba(43,45,66,.6);color:#A8DADC;font-size:14px;cursor:pointer;transition:all .3s;border:1px solid transparent}
.yq937sm .tab.active,.yq937sm .tab:hover{background:linear-gradient(135deg,#E63946,#F4A261);color:#fff;border-color:transparent}

/* === 服务卡片 === */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:linear-gradient(145deg,#2B2D42,#1D1D2B);border-radius:16px;padding:32px 24px;border:1px solid rgba(230,57,70,.1);transition:transform .3s,border-color .3s;text-align:center}
.service-card:hover{transform:translateY(-4px);border-color:rgba(230,57,70,.4)}
.service-card .svc-icon{font-size:42px;margin-bottom:16px}
.service-card h3{font-size:18px;margin-bottom:10px;color:#F1FAEE}
.service-card p{font-size:14px;color:#A8DADC;line-height:1.6}

/* === AI赋能 === */
.4qus54a{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.hl5tkj{background:linear-gradient(145deg,rgba(69,123,157,.12),rgba(43,45,66,.8));border-radius:16px;padding:28px;border:1px solid rgba(69,123,157,.2);transition:transform .3s}
.hl5tkj:hover{transform:translateY(-4px)}
.hl5tkj .6yq5g1{font-size:38px;margin-bottom:14px}
.hl5tkj h3{font-size:17px;margin-bottom:8px;color:#F1FAEE}
.hl5tkj p{font-size:14px;color:#A8DADC}

/* === 社区功能 === */
.9f09g14{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tltruc0j{background:#2B2D42;border-radius:16px;padding:28px;text-align:center;border:1px solid rgba(244,162,97,.1);transition:transform .3s}
.tltruc0j:hover{transform:translateY(-4px)}
.tltruc0j .20xhpvyi{font-size:38px;margin-bottom:14px}
.tltruc0j h3{font-size:17px;margin-bottom:8px}
.tltruc0j p{font-size:14px;color:#A8DADC}

/* === 专家展示 === */
.w99lks{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.ku516rh{background:#2B2D42;border-radius:16px;overflow:hidden;text-align:center;border:1px solid rgba(230,57,70,.1);transition:transform .3s}
.ku516rh:hover{transform:translateY(-4px)}
.ku516rh .avatar{width:100%;aspect-ratio:1;object-fit:cover}
.ku516rh .card-info{padding:18px}
.ku516rh h3{font-size:16px;margin-bottom:4px}
.ku516rh .t61e0{font-size:13px;color:#F4A261;margin-bottom:8px}
.ku516rh p{font-size:13px;color:#A8DADC;line-height:1.5}
.ku516rh .ypdykn2{display:flex;gap:8px;justify-content:center;margin-top:12px}
.ku516rh .ypdykn2 a{padding:6px 14px;border-radius:16px;font-size:12px;border:1px solid rgba(230,57,70,.3);color:#E63946;transition:all .3s}
.ku516rh .ypdykn2 a:hover{background:#E63946;color:#fff}

/* === 合作品牌墙 === */
.9tr4f94{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;padding:20px 0}
.kuuegn{padding:16px 32px;background:rgba(43,45,66,.6);border-radius:12px;font-size:18px;font-weight:700;color:#A8DADC;border:1px solid rgba(69,123,157,.15);transition:all .3s}
.kuuegn:hover{border-color:#E63946;color:#E63946}

/* === How-To 步骤 === */
.nhmc60mi{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.ko8sh{background:#2B2D42;border-radius:16px;padding:28px;text-align:center;border:1px solid rgba(244,162,97,.1);position:relative}
.ko8sh .djk5b{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#E63946,#F4A261);color:#fff;font-size:20px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.ko8sh h3{font-size:16px;margin-bottom:8px}
.ko8sh p{font-size:14px;color:#A8DADC}

/* === FAQ === */
.sko8z{max-width:800px;margin:0 auto}
.faq-item{background:#2B2D42;border-radius:12px;margin-bottom:12px;border:1px solid rgba(230,57,70,.1);overflow:hidden}
.4n19a{padding:18px 24px;font-size:16px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.4n19a:hover{background:rgba(230,57,70,.05)}
.4n19a .fluyuz{transition:transform .3s;color:#E63946}
.faq-item.open .4n19a .fluyuz{transform:rotate(180deg)}
.odm2e{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;font-size:14px;color:#A8DADC;line-height:1.7}
.faq-item.open .odm2e{max-height:300px;padding:0 24px 18px}

/* === 用户评论 === */
.dwl0ve{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.vbwls2wp{background:#2B2D42;border-radius:16px;padding:24px;border:1px solid rgba(244,162,97,.1)}
.vbwls2wp .hqwihix{color:#F4A261;font-size:16px;margin-bottom:10px}
.vbwls2wp .8bad4ee{font-size:14px;color:#A8DADC;line-height:1.7;margin-bottom:14px}
.vbwls2wp .oyl2ka{display:flex;align-items:center;gap:10px}
.vbwls2wp .bwgb4{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#E63946,#F4A261);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px}
.vbwls2wp .9oo1q8r .6fcm6{font-size:14px;font-weight:600}
.vbwls2wp .9oo1q8r .hr5b7x4t{font-size:12px;color:#666}

/* === 分享栏 === */
.share-section{padding:40px 0;text-align:center}
.0l3yig6i{font-size:20px;margin-bottom:20px}
.fqbjdxf{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.share-btn{padding:12px 28px;border-radius:25px;font-size:14px;font-weight:600;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s;color:#fff}
.share-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.3)}
.share-btn.wechat{background:#07C160}
.share-btn.weibo{background:#E6162D}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00A1D6}
.share-btn.qq{background:#12B7F5}

/* === 页脚 === */
.site-footer{background:#16182A;border-top:1px solid rgba(230,57,70,.15);padding:50px 0 0}
.cfw5khi7{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.05z34 h4{font-size:16px;margin-bottom:16px;color:#F1FAEE}
.05z34 p,.05z34 a{font-size:14px;color:#A8DADC;line-height:2}
.05z34 a:hover{color:#E63946}
.vj2buu{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.vj2buu img{width:36px;height:36px;border-radius:8px}
.vj2buu .brand-name{font-size:20px;font-weight:800;background:linear-gradient(135deg,#E63946,#F4A261);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.jnd8y{font-size:14px;color:#A8DADC;line-height:1.8}
.youy0v{display:flex;gap:20px;margin-top:16px}
.kmsft{text-align:center}
.kmsft img{width:100px;height:100px;border-radius:8px;margin-bottom:6px}
.kmsft p{font-size:12px;color:#A8DADC}
.cso26{border-top:1px solid rgba(230,57,70,.1);padding:20px 0;text-align:center;font-size:13px;color:#666}

/* === 面包屑 === */
.breadcrumb{padding:14px 0;font-size:13px;color:#A8DADC}
.breadcrumb a{color:#E63946}
.breadcrumb span{margin:0 8px;color:#666}

/* === 内页通用 === */
.pew165e2{position:relative;height:300px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.pew165e2 .nmri9l1{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.4)}
.pew165e2 .aitxi{position:absolute;inset:0;background:linear-gradient(180deg,rgba(29,29,43,.3),rgba(29,29,43,.9))}
.pew165e2 .d6tpp{position:relative;z-index:2;text-align:center}
.pew165e2 h1{font-size:36px;background:linear-gradient(135deg,#E63946,#F4A261);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.pew165e2 p{color:#A8DADC;font-size:16px;margin-top:8px}
.wit2auim{font-size:15px;color:#A8DADC;line-height:1.8;margin-bottom:30px}
.zv93ul{max-width:800px;margin:0 auto}
.m82ke99{font-size:15px;color:#A8DADC;line-height:1.8;margin-bottom:20px}
.0oyrea{display:inline-block;padding:12px 32px;border-radius:25px;background:linear-gradient(135deg,#E63946,#F4A261);color:#fff;font-weight:600;transition:transform .2s}
.0oyrea:hover{transform:translateY(-2px);color:#fff}
.3xukt{display:inline-block;padding:12px 32px;border-radius:25px;border:2px solid #E63946;color:#E63946;font-weight:600;transition:all .2s}
.3xukt:hover{background:#E63946;color:#fff}
.9o1lvi6{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.mcvvuhf{list-style:none}
.4wbg1x{display:flex;gap:14px;align-items:flex-start;margin-bottom:20px}
.00tpe3{width:44px;height:44px;border-radius:12px;background:rgba(230,57,70,.1);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.uf7tbeg h4{font-size:15px;margin-bottom:4px;color:#F1FAEE}
.uf7tbeg p{font-size:14px;color:#A8DADC}
.text-center{text-align:center}
.text-muted{color:#A8DADC}
.m0i0ues{font-size:15px;color:#A8DADC;text-align:center;margin-bottom:30px}

/* === 懒加载 === */
img[loading="lazy"]{opacity:0;transition:opacity .5s}
img.loaded,img[loading="lazy"]{opacity:1}

/* === 响应式 === */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid,.4qus54a,.9f09g14{grid-template-columns:repeat(2,1fr)}
  .w99lks{grid-template-columns:repeat(2,1fr)}
  .nhmc60mi{grid-template-columns:repeat(2,1fr)}
  .cfw5khi7{grid-template-columns:repeat(2,1fr)}
  .51u8ew{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:#2B2D42;flex-direction:column;padding:20px;gap:8px;border-bottom:2px solid #E63946}
  .main-nav.open{display:flex}
  .nav-toggle{display:block}
  .hero-section{height:420px}
  .tnqe5 h1{font-size:28px}
  .dy2h5d{font-size:16px}
  .video-grid{grid-template-columns:1fr}
  .service-grid,.4qus54a,.9f09g14{grid-template-columns:1fr}
  .w99lks{grid-template-columns:1fr}
  .dwl0ve{grid-template-columns:1fr}
  .nhmc60mi{grid-template-columns:1fr}
  .cfw5khi7{grid-template-columns:1fr}
  .51u8ew{grid-template-columns:repeat(2,1fr)}
  .9o1lvi6{grid-template-columns:1fr}
  .section-title h2{font-size:24px}
}
@media(max-width:480px){
  .51u8ew{grid-template-columns:1fr}
  .hero-section{height:360px}
  .tnqe5 h1{font-size:24px}
}

/* === 辅助类 === */
.text-sm{font-size:13px}