/* ============================================
   四虎视频 修车改装视频社区 - 原创样式表
   配色：深蓝 #1B2838 + 橙色 #E67E22 + 钢灰 #7F8C8D
   ============================================ */

/* === 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;color:#2c3e50;background:#f5f6fa;line-height:1.8}
a{text-decoration:none;color:inherit;transition:color .3s}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}

/* === 容器 === */
.xs9ge{max-width:1200px;margin:0 auto;padding:0 20px}

/* === 顶部导航 === */
.y97538fq{background:linear-gradient(135deg,#1B2838 0%,#2c3e50 100%);position:sticky;top:0;z-index:1000;box-shadow:0 2px 15px rgba(0,0,0,.3)}
.y97538fq .xs9ge{display:flex;align-items:center;justify-content:space-between;height:70px}
.n4uayb2g{display:flex;align-items:center;gap:10px}
.n4uayb2g img{height:45px;width:auto}
.n4uayb2g span{font-size:22px;font-weight:700;color:#E67E22}
.fz6dgx{display:flex;gap:28px}
.fz6dgx a{color:#ecf0f1;font-size:15px;font-weight:500;padding:8px 0;position:relative;transition:color .3s}
.fz6dgx a::after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:#E67E22;transition:width .3s}
.fz6dgx a:hover{color:#E67E22}
.fz6dgx a:hover::after{width:100%}
.fbo8k{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.fbo8k span{display:block;width:26px;height:3px;background:#ecf0f1;border-radius:2px;transition:transform .3s}

/* === Hero Banner === */
.pham606{position:relative;height:520px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.pham606 .rxf6yo9w{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.45)}
.pham606 .fufp3ef{position:relative;z-index:2;text-align:center;color:#fff;max-width:800px;padding:0 20px}
.pham606 h1{font-size:42px;font-weight:800;margin-bottom:16px;text-shadow:0 3px 10px rgba(0,0,0,.5)}
.pham606 h1 em{color:#E67E22;font-style:normal}
.pham606 p{font-size:18px;line-height:1.8;opacity:.92;margin-bottom:24px}
.pham606 .b26bejht{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.pham606 .b26bejht span{background:rgba(230,126,34,.25);border:1px solid rgba(230,126,34,.5);color:#fff;padding:6px 16px;border-radius:20px;font-size:13px}

/* === 通用区块 === */
.vdralxh{padding:60px 0}
.vdralxh:nth-child(even){background:#fff}
.gjo5q40f{text-align:center;margin-bottom:45px}
.gjo5q40f h2{font-size:32px;font-weight:700;color:#1B2838;margin-bottom:12px}
.gjo5q40f h2 em{color:#E67E22;font-style:normal}
.gjo5q40f p{font-size:16px;color:#7F8C8D;max-width:650px;margin:0 auto}

/* === 视频卡片网格 === */
.uo00ho{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.vg3vvuij{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.08);transition:transform .3s,box-shadow .3s}
.vg3vvuij:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(0,0,0,.15)}
.b02h0om{position:relative;padding-top:56.25%;overflow:hidden}
.b02h0om img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.vg3vvuij:hover .b02h0om img{transform:scale(1.06)}
.k2vry{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.35);opacity:0;transition:opacity .3s;cursor:pointer}
.k2vry svg{width:52px;height:52px;fill:#E67E22;filter:drop-shadow(0 2px 6px rgba(0,0,0,.4))}
.vg3vvuij:hover .k2vry{opacity:1}
.zjim5g2{position:absolute;top:10px;left:10px;background:#E67E22;color:#fff;font-size:12px;font-weight:600;padding:3px 10px;border-radius:4px;z-index:3}
.mhp8t{padding:14px 16px}
.mhp8t h3{font-size:15px;font-weight:600;color:#1B2838;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mhp8t .c3qti{display:flex;align-items:center;gap:8px;font-size:12px;color:#95a5a6}
.mhp8t .c3qti span{display:flex;align-items:center;gap:3px}
.bm0e7elu{display:flex;gap:6px;padding:0 16px 14px;flex-wrap:wrap}
.bm0e7elu span{background:#eef2f7;color:#5a6c7d;font-size:11px;padding:3px 8px;border-radius:10px}

/* === video隐藏（SEO保留） === */
.b02h0om video{display:none}

/* === 专家团队 === */
.aaaev{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.yliuay{background:#fff;border-radius:12px;padding:30px 20px;text-align:center;box-shadow:0 4px 18px rgba(0,0,0,.06);transition:transform .3s}
.yliuay:hover{transform:translateY(-5px)}
.yliuay img{width:100px;height:100px;border-radius:50%;object-fit:cover;margin:0 auto 15px;border:3px solid #E67E22}
.yliuay h3{font-size:17px;font-weight:600;color:#1B2838;margin-bottom:4px}
.yliuay .u42rc{color:#E67E22;font-size:13px;margin-bottom:8px}
.yliuay p{font-size:13px;color:#7F8C8D;line-height:1.6}

/* === 社区功能 === */
.xaafyqzq{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.wggojl{background:linear-gradient(145deg,#1B2838,#2c3e50);border-radius:14px;padding:35px 25px;color:#fff;transition:transform .3s}
.wggojl:hover{transform:translateY(-5px)}
.wggojl .kqimd4f{width:55px;height:55px;background:rgba(230,126,34,.2);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;font-size:26px}
.wggojl h3{font-size:18px;font-weight:600;margin-bottom:10px}
.wggojl p{font-size:14px;color:#bdc3c7;line-height:1.7}

/* === AI赋能 === */
.hd6k2d{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.t85hrwo{background:#fff;border-radius:12px;padding:30px 24px;border-left:4px solid #E67E22;box-shadow:0 4px 18px rgba(0,0,0,.06);transition:transform .3s}
.t85hrwo:hover{transform:translateY(-5px)}
.t85hrwo h3{font-size:17px;font-weight:600;color:#1B2838;margin-bottom:10px}
.t85hrwo p{font-size:14px;color:#7F8C8D;line-height:1.7}

/* === 用户评价 === */
.q3b6hg5g{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.ntw79io0{background:#fff;border-radius:12px;padding:25px;box-shadow:0 4px 18px rgba(0,0,0,.06)}
.ntw79io0 .mwtw0r6{color:#E67E22;font-size:16px;margin-bottom:10px}
.ntw79io0 p{font-size:14px;color:#555;line-height:1.7;margin-bottom:12px;font-style:italic}
.ntw79io0 .knqkc9{font-size:13px;color:#95a5a6;font-weight:600}

/* === FAQ === */
.oybj3{max-width:800px;margin:0 auto}
.ia7lm{background:#fff;border-radius:10px;margin-bottom:12px;box-shadow:0 2px 10px rgba(0,0,0,.05);overflow:hidden}
.ia7lm summary{padding:18px 24px;font-size:16px;font-weight:600;color:#1B2838;cursor:pointer;display:flex;align-items:center;justify-content:space-between;transition:background .3s}
.ia7lm summary:hover{background:#f8f9fa}
.ia7lm summary::after{content:"+";font-size:22px;color:#E67E22;font-weight:700}
.ia7lm[open] summary::after{content:"-"}
.ia7lm .yewdiafh{padding:0 24px 18px;font-size:14px;color:#666;line-height:1.8}

/* === 信任信号 === */
.l4ktji{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.glwg5jw{background:#fff;border-radius:10px;padding:25px;text-align:center;box-shadow:0 3px 12px rgba(0,0,0,.05)}
.glwg5jw .ca2wse38{font-size:28px;font-weight:800;color:#E67E22;margin-bottom:6px}
.glwg5jw p{font-size:14px;color:#7F8C8D}

/* === 面包屑 === */
.bti82{background:#eef2f7;padding:12px 0;font-size:13px;color:#95a5a6}
.bti82 a{color:#E67E22}
.bti82 a:hover{text-decoration:underline}

/* === 页脚 === */
.k5vtwln0{background:linear-gradient(135deg,#1B2838 0%,#0f1923 100%);color:#bdc3c7;padding:50px 0 0}
.yn4smd{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:35px}
.hvsoj2d h4{color:#E67E22;font-size:17px;font-weight:600;margin-bottom:15px}
.hvsoj2d p{font-size:13px;line-height:1.8;margin-bottom:10px}
.hvsoj2d a{display:block;font-size:13px;color:#95a5a6;padding:3px 0;transition:color .3s}
.hvsoj2d a:hover{color:#E67E22}
.hvsoj2d img{max-width:120px;margin-top:8px}
.jz5d2{border-top:1px solid rgba(255,255,255,.08);margin-top:35px;padding:18px 0;text-align:center;font-size:12px;color:#7f8c8d}

/* === 动画 === */
.fade-in{opacity:0;transform:translateY(25px);transition:opacity .7s ease,transform .7s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* === 内页视频网格 === */
.pgm7de{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}

/* === 关于页 === */
.tjm5wfo{padding:50px 0}
.tjm5wfo h2{font-size:28px;color:#1B2838;margin-bottom:20px}
.tjm5wfo p{font-size:15px;color:#555;line-height:1.9;margin-bottom:16px}
.m6g2hc0t{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:30px}
.m6g2hc0t .glwg5jw{text-align:left;padding:20px}
.m6g2hc0t .glwg5jw h3{font-size:18px;color:#1B2838;margin-bottom:8px}

/* === 响应式 === */
@media(max-width:1024px){
.uo00ho{grid-template-columns:repeat(3,1fr)}
.aaaev{grid-template-columns:repeat(2,1fr)}
.yn4smd{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.fz6dgx{display:none;position:absolute;top:70px;left:0;right:0;background:#1B2838;flex-direction:column;padding:20px;gap:15px;box-shadow:0 5px 15px rgba(0,0,0,.3)}
.fz6dgx.active{display:flex}
.fbo8k{display:flex}
.pham606{height:400px}
.pham606 h1{font-size:28px}
.pham606 p{font-size:15px}
.uo00ho{grid-template-columns:repeat(2,1fr)}
.xaafyqzq{grid-template-columns:1fr}
.hd6k2d{grid-template-columns:1fr}
.aaaev{grid-template-columns:repeat(2,1fr)}
.q3b6hg5g{grid-template-columns:1fr}
.l4ktji{grid-template-columns:1fr}
.yn4smd{grid-template-columns:1fr}
.pgm7de{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
.uo00ho{grid-template-columns:1fr}
.aaaev{grid-template-columns:1fr}
.pgm7de{grid-template-columns:1fr}
.pham606{height:350px}
.pham606 h1{font-size:24px}
}