/* ============================================
   91 修车改装视频社区 - 全站样式表
   品牌：91 | 域名：expwcmk.cn
   原创设计 - 赛车红+深夜蓝黑+机油金
   ============================================ */

/* --- CSS Reset & Base --- */
*,*::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:#0D0D1A;color:#E8E8F0;line-height:1.7;overflow-x:hidden}
a{color:#F5A623;text-decoration:none;transition:color .3s}
a:hover{color:#E8350F}
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:#fff}

/* --- Container --- */
.fkcfl4{max-width:1200px;margin:0 auto;padding:0 20px}
.fioqg998{padding:60px 0}

/* --- Header / Navigation --- */
.dkbof4p{background:rgba(13,13,26,.96);position:fixed;top:0;left:0;width:100%;z-index:1000;border-bottom:1px solid rgba(232,53,15,.2);backdrop-filter:blur(12px)}
.hkvvvtkj{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1200px;margin:0 auto}
.q8ami29m{display:flex;align-items:center;gap:10px}
.q8ami29m img{height:42px;width:auto}
.u6fkmu1{font-size:1.5rem;font-weight:800;color:#E8350F;letter-spacing:2px}
.i6x0q{display:flex;align-items:center;gap:0}
.i6x0q a{padding:10px 16px;font-size:.95rem;color:#B0B0C8;transition:all .3s;position:relative}
.i6x0q a:hover,.i6x0q a.active{color:#E8350F}
.i6x0q a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:#E8350F;transition:width .3s}
.i6x0q a:hover::after,.i6x0q a.active::after{width:60%}
.ketw8qgb{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* --- Search Bar --- */
.q5ru6mtu{background:rgba(22,22,42,.9);padding:12px 0;border-bottom:1px solid rgba(245,166,35,.1)}
.ifp3vac{max-width:600px;margin:0 auto;display:flex;gap:8px;padding:0 20px}
.ifp3vac input{flex:1;padding:10px 16px;border:1px solid rgba(245,166,35,.3);border-radius:25px;background:rgba(13,13,26,.8);color:#fff;font-size:.9rem;outline:none;transition:border-color .3s}
.ifp3vac input:focus{border-color:#E8350F}
.ifp3vac input::placeholder{color:#666}
.ifp3vac button{padding:10px 24px;background:linear-gradient(135deg,#E8350F,#F5A623);border:none;border-radius:25px;color:#fff;font-size:.9rem;cursor:pointer;transition:transform .2s,box-shadow .3s}
.ifp3vac button:hover{transform:scale(1.05);box-shadow:0 4px 15px rgba(232,53,15,.4)}

/* --- Hero Banner --- */
.pyhznr{position:relative;height:70vh;min-height:480px;overflow:hidden;margin-top:68px;display:flex;align-items:center;justify-content:center}
.pyhznr .w3gyvx2{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.45)}
.pyhznr .qsdsbefq{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,13,26,.3) 0%,rgba(13,13,26,.85) 100%)}
.zr0o71{position:relative;z-index:2;text-align:center;padding:0 20px;max-width:800px}
.zr0o71 h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,.5)}
.zr0o71 h1 .dthfjn2{color:#E8350F;font-size:3.2rem}
.zr0o71 p{font-size:1.15rem;color:#ccc;margin-bottom:24px;line-height:1.8}
.zr0o71 .uwe3ti42{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:20px}
.zr0o71 .uwe3ti42 span{padding:6px 16px;background:rgba(232,53,15,.15);border:1px solid rgba(232,53,15,.3);border-radius:20px;font-size:.85rem;color:#F5A623}
.rhfe2{display:inline-flex;gap:16px;flex-wrap:wrap;justify-content:center}
.ciub18{padding:12px 32px;background:linear-gradient(135deg,#E8350F,#c42a0a);border:none;border-radius:30px;color:#fff;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;text-decoration:none;display:inline-block}
.ciub18:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(232,53,15,.5);color:#fff}
.t3m7bq{padding:12px 32px;background:transparent;border:2px solid #F5A623;border-radius:30px;color:#F5A623;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;text-decoration:none;display:inline-block}
.t3m7bq:hover{background:#F5A623;color:#0D0D1A;transform:translateY(-2px)}

/* --- Section Titles --- */
.ebndidck{text-align:center;margin-bottom:40px}
.ebndidck h2{font-size:2rem;margin-bottom:10px;position:relative;display:inline-block}
.ebndidck h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,#E8350F,#F5A623);margin:10px auto 0}
.ebndidck p{color:#888;font-size:1rem;margin-top:8px}

/* --- Video Card Grid --- */
.c0qgdn1j{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.zz8c8m{background:#16162A;border-radius:12px;overflow:hidden;transition:transform .3s,box-shadow .3s;cursor:pointer;position:relative}
.zz8c8m:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(232,53,15,.2)}
.zz8c8m .tczidy8d{position:relative;padding-top:56.25%;overflow:hidden}
.zz8c8m .tczidy8d img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.zz8c8m:hover .tczidy8d img{transform:scale(1.08)}
.zz8c8m .iz273xt{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(232,53,15,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s,transform .3s}
.zz8c8m:hover .iz273xt{opacity:1;transform:translate(-50%,-50%) scale(1.1)}
.iz273xt::after{content:'';display:block;width:0;height:0;border-left:18px solid #fff;border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.zz8c8m .x1vmvnq{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);padding:2px 8px;border-radius:4px;font-size:.75rem;color:#fff}
.zz8c8m .tpye3mn{padding:16px}
.zz8c8m .tpye3mn h3{font-size:1rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}
.zz8c8m .s2jsu{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:#888}
.zz8c8m .s2jsu .views{display:flex;align-items:center;gap:4px}
.zz8c8m .bm3o0{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.zz8c8m .bm3o0 span{padding:3px 10px;background:rgba(245,166,35,.1);border-radius:12px;font-size:.75rem;color:#F5A623}

/* --- Feature Modules --- */
.u2kbkonf{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.dofp9uy{background:#16162A;border-radius:12px;padding:30px 24px;text-align:center;transition:transform .3s,border-color .3s;border:1px solid rgba(245,166,35,.1)}
.dofp9uy:hover{transform:translateY(-4px);border-color:#E8350F}
.dofp9uy .icon{font-size:2.5rem;margin-bottom:16px;display:block}
.dofp9uy h3{font-size:1.1rem;margin-bottom:10px;color:#F5A623}
.dofp9uy p{font-size:.9rem;color:#999;line-height:1.6}

/* --- Expert Cards --- */
.jjo9ix6p{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.nje1v{background:#16162A;border-radius:12px;overflow:hidden;text-align:center;transition:transform .3s;border:1px solid rgba(245,166,35,.08)}
.nje1v:hover{transform:translateY(-4px)}
.nje1v .zcxveld0{width:120px;height:120px;border-radius:50%;margin:24px auto 16px;object-fit:cover;border:3px solid #E8350F}
.nje1v h3{font-size:1.05rem;margin-bottom:4px}
.nje1v .role{color:#F5A623;font-size:.85rem;margin-bottom:12px}
.nje1v p{font-size:.85rem;color:#999;padding:0 20px;line-height:1.5}
.nje1v .lwouvuh{padding:16px 20px;display:flex;gap:10px;justify-content:center}
.nje1v .lwouvuh a{padding:6px 16px;border-radius:20px;font-size:.8rem;border:1px solid #E8350F;color:#E8350F;transition:all .3s}
.nje1v .lwouvuh a:hover{background:#E8350F;color:#fff}

/* --- FAQ Section --- */
.u517d7s8{max-width:800px;margin:0 auto}
.df80e{background:#16162A;border-radius:10px;margin-bottom:12px;overflow:hidden;border:1px solid rgba(245,166,35,.08)}
.df80e .lkdk9vnv{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1rem;transition:background .3s}
.df80e .lkdk9vnv:hover{background:rgba(232,53,15,.05)}
.df80e .lkdk9vnv .arrow{transition:transform .3s;color:#F5A623;font-size:1.2rem}
.faq-item.open .lkdk9vnv .arrow{transform:rotate(180deg)}
.df80e .w78cd{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s;padding:0 24px}
.faq-item.open .w78cd{max-height:300px;padding:0 24px 18px}
.df80e .w78cd p{color:#999;font-size:.9rem;line-height:1.7}

/* --- Reviews / Testimonials --- */
.q1pmy1{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.yuipv0lo{background:#16162A;border-radius:12px;padding:24px;border:1px solid rgba(245,166,35,.08)}
.yuipv0lo .stars{color:#F5A623;font-size:1rem;margin-bottom:10px;letter-spacing:2px}
.yuipv0lo p{font-size:.9rem;color:#ccc;line-height:1.6;margin-bottom:12px;font-style:italic}
.yuipv0lo .k3cieqk{display:flex;align-items:center;gap:10px}
.yuipv0lo .k3cieqk .avatar{width:36px;height:36px;border-radius:50%;background:#E8350F;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.85rem}
.yuipv0lo .k3cieqk .name{font-size:.85rem;color:#F5A623}
.yuipv0lo .k3cieqk .date{font-size:.75rem;color:#666}

/* --- Partners Logo Wall --- */
.clasgz{background:#0a0a18}
.dxhrmc1{border-radius:12px;overflow:hidden;max-width:900px;margin:0 auto}

/* --- Community Guide --- */
.kfut6o9{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px;counter-reset:step}
.m25wvcsq{background:#16162A;border-radius:12px;padding:30px 24px;position:relative;border:1px solid rgba(245,166,35,.08);counter-increment:step}
.m25wvcsq::before{content:counter(step);position:absolute;top:-12px;left:24px;width:32px;height:32px;background:linear-gradient(135deg,#E8350F,#F5A623);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;color:#fff}
.m25wvcsq h3{margin-top:8px;font-size:1rem;margin-bottom:8px;color:#F5A623}
.m25wvcsq p{font-size:.85rem;color:#999;line-height:1.6}

/* --- Contact Section --- */
.xvk8k{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.yl6fhs{background:#16162A;border-radius:12px;padding:30px;border:1px solid rgba(245,166,35,.08)}
.yl6fhs h3{font-size:1.1rem;margin-bottom:16px;color:#F5A623}
.yl6fhs .b4seu9{display:flex;align-items:center;gap:10px;margin-bottom:12px;font-size:.9rem;color:#ccc}
.yl6fhs .b4seu9 .label{color:#888;min-width:70px}

/* --- Share Buttons --- */
.vwnwwgpe{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;padding:20px 0}
.j40uw{padding:8px 20px;border-radius:25px;font-size:.85rem;border:1px solid rgba(245,166,35,.3);color:#ccc;cursor:pointer;transition:all .3s;background:transparent}
.j40uw:hover{background:#E8350F;border-color:#E8350F;color:#fff}

/* --- Footer --- */
.a7k5rk70{background:#08081A;border-top:1px solid rgba(232,53,15,.15);padding:40px 0 20px}
.snmbbt0{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:30px;margin-bottom:30px}
.i3h35co h4{font-size:1rem;margin-bottom:16px;color:#F5A623;position:relative;padding-bottom:8px}
.i3h35co h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:#E8350F}
.i3h35co p,.i3h35co a{font-size:.85rem;color:#888;display:block;margin-bottom:8px;transition:color .3s}
.i3h35co a:hover{color:#E8350F}
.i3h35co .zorjeun{width:120px;border-radius:8px;margin-top:8px}
.os8zpwa3{text-align:center;padding-top:20px;border-top:1px solid rgba(255,255,255,.05);font-size:.8rem;color:#555}
.os8zpwa3 .em8ui{color:#888;margin-top:6px}

/* --- Breadcrumb --- */
.gf35r{padding:16px 0;font-size:.85rem;color:#888}
.gf35r a{color:#F5A623}
.gf35r span{margin:0 8px;color:#555}

/* --- Inner Page Hero --- */
.ptda0sv3{margin-top:68px;padding:60px 0 40px;background:linear-gradient(135deg,#0D0D1A 0%,#16162A 100%);text-align:center}
.ptda0sv3 h1{font-size:2.2rem;margin-bottom:10px}
.ptda0sv3 p{color:#888;font-size:1rem}

/* --- AI Module --- */
.fycp2cdn{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}
.fycp2cdn img{border-radius:12px}
.fycp2cdn .nvt01 h3{font-size:1.3rem;margin-bottom:12px;color:#F5A623}
.fycp2cdn .nvt01 p{color:#999;font-size:.95rem;line-height:1.7;margin-bottom:12px}

/* --- Lazy Load Placeholder --- */
.lazy{opacity:0;transition:opacity .5s}
.lazy.loaded{opacity:1}

/* --- Responsive --- */
@media(max-width:768px){
  .hkvvvtkj{flex-wrap:wrap}
  .i6x0q{display:none;flex-direction:column;width:100%;padding:10px 0}
  .main-nav.open{display:flex}
  .ketw8qgb{display:block}
  .pyhznr{height:55vh;min-height:360px}
  .zr0o71 h1{font-size:1.8rem}
  .zr0o71 h1 .dthfjn2{font-size:2rem}
  .c0qgdn1j{grid-template-columns:1fr}
  .u2kbkonf{grid-template-columns:1fr 1fr}
  .jjo9ix6p{grid-template-columns:1fr 1fr}
  .fycp2cdn{grid-template-columns:1fr}
  .fioqg998{padding:40px 0}
  .snmbbt0{grid-template-columns:1fr 1fr}
  .ifp3vac{flex-direction:column}
  .ifp3vac button{width:100%}
}
@media(max-width:480px){
  .u2kbkonf{grid-template-columns:1fr}
  .jjo9ix6p{grid-template-columns:1fr}
  .snmbbt0{grid-template-columns:1fr}
  .q1pmy1{grid-template-columns:1fr}
  .kfut6o9{grid-template-columns:1fr}
  .xvk8k{grid-template-columns:1fr}
}

/* --- Scrollbar --- */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:#0D0D1A}
::-webkit-scrollbar-thumb{background:#E8350F;border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:#F5A623}

/* --- Animation --- */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.uv77c{animation:fadeInUp .6s ease forwards}

/* --- MCP Frontend Placeholder --- */
.r6xqszgp{background:#16162A;border-radius:12px;padding:24px;border:1px solid rgba(245,166,35,.1);text-align:center;margin:20px 0}
.r6xqszgp h4{color:#F5A623;margin-bottom:10px}
.r6xqszgp .ur1m8t{display:inline-block;padding:6px 16px;background:rgba(232,53,15,.1);border-radius:20px;font-size:.85rem;color:#E8350F}

/* --- H5 Video Player in Cards --- */
.zz8c8m .tczidy8d video.hn91zt{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;display:none}
.zz8c8m .tczidy8d .uy5ge{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1;transition:transform .4s}
.zz8c8m:hover .tczidy8d .uy5ge{transform:scale(1.08)}
.zz8c8m .tczidy8d .iz273xt{z-index:3}
.zz8c8m .tczidy8d .x1vmvnq{z-index:2}

/* --- Footer Logo --- */
.y0q6w6to{text-align:center;margin-bottom:30px;padding-bottom:20px;border-bottom:1px solid rgba(245,166,35,.1)}
.y0q6w6to a{display:inline-block;text-decoration:none}
.y0q6w6to img{display:inline-block;margin:0 auto 8px}
.pqetd{text-align:center;padding:16px 0;border-top:1px solid rgba(255,255,255,.05);margin-top:20px;font-size:.8rem}
.pqetd a{color:#888;margin:0 12px;transition:color .3s}
.pqetd a:hover{color:#E8350F}