/* ============================================================
   前台样式表：红色主题，和后台共用同一套配色
   ============================================================ */
:root{
    --red:#C8102E; --red-d:#9A0C22; --red-l:#E23A4E; --orange:#FF5A1F;
    --ink:#1A1A1A; --gray:#5A5A5A; --gray-l:#F4F5F7; --gray-m:#E3E6EA;
    --white:#FFFFFF; --radius:14px; --shadow:0 8px 30px rgba(0,0,0,.08);
    --shadow-h:0 14px 40px rgba(200,16,46,.22); --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
    color:var(--ink);line-height:1.65;background:var(--white)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.btn{display:inline-block;padding:13px 28px;border-radius:50px;font-weight:700;font-size:15px;
    cursor:pointer;border:none;transition:.25s;white-space:nowrap}
.btn-red{background:var(--red);color:#fff;box-shadow:0 6px 18px rgba(200,16,46,.35)}
.btn-red:hover{background:var(--red-d);transform:translateY(-2px)}
.btn-ghost{background:transparent;border:2px solid #fff;color:#fff}
.btn-ghost:hover{background:#fff;color:var(--red)}
.btn-outline{background:#fff;border:2px solid var(--red);color:var(--red)}
.btn-outline:hover{background:var(--red);color:#fff}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:34px;font-weight:800;letter-spacing:.5px}
.section-title h2 .accent{color:var(--red)}
.section-title p{color:var(--gray);margin-top:12px;font-size:16px}
.tag{display:inline-block;background:rgba(200,16,46,.1);color:var(--red);font-weight:700;
    padding:6px 16px;border-radius:50px;font-size:13px;margin-bottom:18px}

/* 头部导航 */
header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
    backdrop-filter:blur(8px);border-bottom:1px solid var(--gray-m)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;color:var(--ink)}
.logo .mark{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--red),var(--orange));
    display:grid;place-items:center;color:#fff;font-size:22px;box-shadow:0 4px 12px rgba(200,16,46,.35)}
.logo span{color:var(--red)}
.logo-img{height:38px;width:auto;display:block}   /* 导航栏里的图片 Logo */
.logo-name{color:var(--red);font-size:22px;font-weight:800}
.nav-links{display:flex;gap:32px;list-style:none;font-weight:600}
.nav-links a{position:relative;padding:6px 0;color:var(--ink);transition:.2s}
.nav-links a:hover{color:var(--red)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--red);transition:.25s}
.nav-links a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:14px}
.hotline{font-size:14px;color:var(--gray);text-align:right}
.hotline b{display:block;color:var(--red);font-size:18px;font-weight:800}
.menu-btn{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--red)}

/* 首屏 Hero */
.hero{position:relative;background:
    radial-gradient(1200px 500px at 80% -10%,rgba(255,90,31,.35),transparent 60%),
    linear-gradient(135deg,var(--red-d),var(--red) 60%,var(--red-l));
    color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
    background-size:26px 26px;opacity:.5}
.hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:90px 0 80px}
.hero h1{font-size:46px;line-height:1.2;font-weight:800;letter-spacing:1px}
.hero h1 .hl{color:#FFD23F}
.hero p.lead{font-size:18px;margin:22px 0 34px;opacity:.95;max-width:520px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:46px}
.hero-stats .s b{font-size:30px;font-weight:800;display:block}
.hero-stats .s span{font-size:14px;opacity:.85}
.hero-card{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);
    border-radius:20px;padding:26px;backdrop-filter:blur(6px)}
.hero-card h3{font-size:18px;margin-bottom:16px;font-weight:700}
.search-row{display:flex;gap:10px;margin-bottom:12px}
.search-row select,.search-row input{flex:1;padding:12px 14px;border-radius:10px;border:none;
    font-size:14px;background:#fff;color:var(--ink);min-width:0}
.hero-card .btn{width:100%;text-align:center;margin-top:6px}

/* 业务分类 */
.categories{padding:80px 0;background:var(--gray-l)}
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.cat-card{background:#fff;border-radius:var(--radius);padding:34px 28px;box-shadow:var(--shadow);
    transition:.3s;border:1px solid transparent;position:relative;overflow:hidden}
.cat-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--red);transform:scaleX(0);transition:.3s}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-h);border-color:rgba(200,16,46,.15)}
.cat-card:hover::before{transform:scaleX(1)}
.cat-ico{width:64px;height:64px;border-radius:16px;background:rgba(200,16,46,.1);
    display:grid;place-items:center;margin-bottom:20px;color:var(--red)}
.cat-card h3{font-size:21px;margin-bottom:10px}
.cat-card p{color:var(--gray);font-size:15px;margin-bottom:16px}
.cat-card ul{list-style:none;font-size:14px;color:var(--gray)}
.cat-card ul li{padding:5px 0 5px 22px;position:relative}
.cat-card ul li::before{content:"✓";position:absolute;left:0;color:var(--red);font-weight:800}

/* 精选车源 */
.stock{padding:80px 0}
.tabs{display:flex;justify-content:center;gap:12px;margin-bottom:38px;flex-wrap:wrap}
.tab{padding:10px 24px;border-radius:50px;border:1.5px solid var(--gray-m);background:#fff;
    font-weight:600;cursor:pointer;transition:.2s;color:var(--gray)}
.tab.active,.tab:hover{background:var(--red);color:#fff;border-color:var(--red)}
.car-grid{display:grid;grid-template-columns:repeat(3,369px);gap:26px;justify-content:center}   /* 首页/详情页相关车源：一排三个，卡片宽度 369px */
.car-grid.list{display:grid;grid-template-columns:repeat(3,369px);gap:26px;justify-content:center}   /* 列表页：一排三个，卡片宽度 369px */
.car-grid.list .car-img{height:492px}   /* 列表页车源图片：369 宽 × 492 高（宽度由列宽决定） */
.car{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
    transition:.3s;border:1px solid var(--gray-m)}
.car:hover{transform:translateY(-6px);box-shadow:var(--shadow-h)}
.car-img{height:492px;position:relative;display:grid;place-items:center;color:#fff;overflow:hidden}   /* 首页/详情页相关车源图片：369 宽 × 492 高（宽度由列宽决定） */
.car-img.has-img{background:none!important;padding:0}
.car-img.has-img img{width:100%;height:100%;object-fit:cover}
.car-img svg{width:130px;height:auto;opacity:.95}
.car-badge{position:absolute;top:14px;left:14px;background:var(--orange);color:#fff;
    font-size:12px;font-weight:700;padding:5px 12px;border-radius:50px;z-index:2}
.car-body{padding:20px}
.car-body h3{font-size:19px;margin-bottom:6px}
.car-meta{display:flex;flex-wrap:wrap;gap:8px 14px;color:var(--gray);font-size:13px;margin:12px 0 16px}
.car-meta span{display:flex;align-items:center;gap:5px}
.car-foot{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--gray-m);padding-top:16px}
.price{color:var(--red);font-weight:800;font-size:22px}
.price small{font-size:13px;color:var(--gray);font-weight:500}

/* 优势 */
.why{padding:80px 0;background:linear-gradient(135deg,#1c1c1c,#2a2a2a);color:#fff}
.why .section-title h2{color:#fff}
.why .section-title p{color:#bbb}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
    border-radius:var(--radius);padding:30px 26px;transition:.3s}
.feat:hover{background:rgba(200,16,46,.15);border-color:var(--red)}
.feat .fi{width:52px;height:52px;border-radius:14px;background:var(--red);display:grid;place-items:center;margin-bottom:18px}
.feat h3{font-size:18px;margin-bottom:10px}
.feat p{color:#c9c9c9;font-size:14px;line-height:1.6}

/* 流程 */
.flow{padding:80px 0;background:var(--gray-l)}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.step{background:#fff;border-radius:var(--radius);padding:28px 20px;text-align:center;
    box-shadow:var(--shadow);position:relative}
.step .num{width:46px;height:46px;border-radius:50%;background:var(--red);color:#fff;
    font-weight:800;font-size:20px;display:grid;place-items:center;margin:0 auto 14px}
.step h4{font-size:16px;margin-bottom:8px}
.step p{font-size:13px;color:var(--gray)}

/* 联系 */
.contact{padding:80px 0}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info h2{font-size:30px;margin-bottom:18px}
.contact-info h2 .accent{color:var(--red)}
.contact-info p{color:var(--gray);margin-bottom:26px}
.info-row{display:flex;gap:14px;align-items:flex-start;margin-bottom:20px}
.info-row .ic{width:44px;height:44px;border-radius:12px;background:rgba(200,16,46,.1);
    color:var(--red);display:grid;place-items:center;flex-shrink:0}
.info-row b{display:block;font-size:15px}
.info-row span{color:var(--gray);font-size:14px}
.contact-qr{display:block;width:160px;max-width:100%;height:auto;margin-top:10px;border-radius:10px;border:1px solid var(--gray-m);box-shadow:var(--shadow)}
.form{background:#fff;border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);border:1px solid var(--gray-m)}
.form h3{font-size:20px;margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border-radius:10px;
    border:1.5px solid var(--gray-m);font-size:14px;font-family:inherit;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--red);outline:none}
.form .btn{width:100%;text-align:center;margin-top:6px}

/* 页脚 */
footer{background:#141414;color:#aaa;padding:50px 0 26px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;margin-bottom:34px}
.foot-logo{font-size:20px;font-weight:800;color:#fff;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.foot-logo .mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--red),var(--orange));display:grid;place-items:center;color:#fff;font-size:18px}
.foot-logo .logo-img{height:42px;width:auto;display:block}   /* 页脚里的图片 Logo */
.foot-logo .logo-name{color:#fff;font-size:20px;font-weight:800}
footer h4{color:#fff;font-size:15px;margin-bottom:16px}
footer ul{list-style:none}
footer ul li{padding:6px 0;font-size:14px}
footer ul li a:hover{color:var(--red-l)}
.foot-bottom{border-top:1px solid #2a2a2a;padding-top:20px;text-align:center;font-size:13px;color:#777}
.foot-bottom a{color:#bbb;text-decoration:underline;text-underline-offset:2px;margin:0 4px}
.foot-bottom a:hover{color:#fff}
.gongan-badge{display:inline-block;width:18px;height:18px;vertical-align:middle;margin-right:4px;margin-top:-2px}

/* 响应式 */
@media(max-width:980px){
    .hero-grid{grid-template-columns:1fr}
    .cat-grid,.car-grid,.feat-grid{grid-template-columns:repeat(2,1fr)}
    .steps{grid-template-columns:repeat(2,1fr)}
    .contact-grid{grid-template-columns:1fr}
    .foot-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
    .nav-links,.nav-cta .hotline{display:none}
    .menu-btn{display:block}
    .nav-links.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;
        background:#fff;padding:20px;gap:14px;box-shadow:var(--shadow);border-top:1px solid var(--gray-m)}
    .hero h1{font-size:34px}
    .cat-grid,.car-grid,.feat-grid,.steps{grid-template-columns:1fr}
    .hero-stats{gap:20px}
    .section-title h2{font-size:26px}
}

/* ===== 子页（列表页 / 详情页）样式 ===== */
.page-hero{background:linear-gradient(135deg,var(--red-d),var(--red) 60%,var(--red-l));color:#fff;padding:54px 0 46px}
.page-hero h1{font-size:34px;font-weight:800;letter-spacing:1px}
.page-hero p{margin-top:10px;opacity:.92;font-size:16px}
.page-hero b{color:#FFD23F}
.list-page{padding:46px 0 70px}
.filter-bar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;background:#fff;border:1px solid var(--gray-m);
    border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);margin-bottom:34px}
.filter-bar select,.filter-bar input{flex:1;min-width:150px;padding:11px 13px;border:1.5px solid var(--gray-m);
    border-radius:10px;font-size:14px;font-family:inherit;background:#fff;color:var(--ink)}
.filter-bar select:focus,.filter-bar input:focus{border-color:var(--red);outline:none}
.filter-bar .btn{flex:0 0 auto;min-width:96px}
.breadcrumb{padding:22px 20px 0;font-size:14px;color:var(--gray)}
.breadcrumb a:hover{color:var(--red)}
.breadcrumb span{color:var(--ink);font-weight:600}
.detail-grid{display:grid;grid-template-columns:auto 1fr;gap:36px;align-items:start;margin-bottom:24px}
.detail-img{width:450px;height:600px;border-radius:var(--radius);display:grid;place-items:center;color:#fff;overflow:hidden;box-shadow:var(--shadow)}
.detail-img.has-img{background:none!important;padding:0}
.detail-img.has-img img{width:100%;height:100%;object-fit:cover}
.detail-img svg{width:180px;height:auto;opacity:.95}
.detail-info .di-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.detail-info h1{font-size:28px;font-weight:800}
.di-price-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:14px 0 20px}
.di-price{color:var(--red);font-weight:800;font-size:34px;margin:0}
.di-price small{font-size:16px;color:var(--gray);font-weight:500}
.spec-list{list-style:none;border:1px solid var(--gray-m);border-radius:12px;overflow:hidden;margin-bottom:22px}
.spec-list li{display:flex;justify-content:space-between;padding:13px 18px;border-bottom:1px solid var(--gray-m);font-size:15px}
.spec-list li:last-child{border-bottom:none}
.spec-list span{color:var(--gray)}
.spec-list b{color:var(--ink)}
.di-desc{color:var(--gray);font-size:15px;line-height:1.7;margin-bottom:14px}
.di-points{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.di-points li{background:rgba(200,16,46,.06);color:var(--red);font-size:13px;font-weight:600;padding:7px 14px;border-radius:50px}
.di-form{margin-top:8px}
.rel-block{margin-top:54px}
.rel-title{font-size:24px;font-weight:800;margin-bottom:24px;text-align:center}
.rel-title::after{content:"";display:block;width:54px;height:4px;background:var(--red);border-radius:2px;margin:12px auto 0}
.empty-tip{text-align:center;color:var(--gray);padding:60px 20px;font-size:16px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}
.flash{background:#e7f7ec;border:1px solid #b7e3c5;color:#1a7a3c;padding:13px 18px;border-radius:10px;margin-bottom:16px;font-size:15px}
@media(max-width:980px){
    .detail-grid{grid-template-columns:1fr}
    .detail-img{width:100%;height:auto;aspect-ratio:3/4;max-width:450px}
}

/* 详情页：车辆详情编辑器内容展示区 */
.di-detail{max-width:1100px;margin:8px auto 0;border-top:1px dashed var(--gray-m);padding-top:28px}   /* 整块最宽1100，不限制高度 */
.di-detail h3{font-size:19px;font-weight:800;margin-bottom:16px}
.di-detail-body{color:var(--ink);font-size:15px;line-height:1.8}
.di-detail-body ul{margin:8px 0 8px 20px;list-style:disc}
.di-detail-body li{margin:4px 0}
.di-detail-body p{margin:8px 0}
.di-detail-body hr{border:none;border-top:1px solid var(--gray-m);margin:14px 0}
.di-detail-body img{display:block;margin:12px auto;max-width:100%;width:860px;height:auto;border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,.08)}   /* 详情图统一宽度 860px，窄屏自动缩窄，保证整页整齐 */
.di-detail-body table{border-collapse:collapse;width:100%;margin:10px 0;font-size:14px}
.di-detail-body th,.di-detail-body td{border:1px solid var(--gray-m);padding:8px 10px;text-align:left}
.di-detail-body a{color:var(--red)}

/* ===== 车源详情页：咨询弹窗 ===== */
.di-consult{margin:0;width:auto;padding:9px 18px;font-size:14px}   /* 价格右侧的小按钮 */
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;
           align-items:center;justify-content:center;z-index:999;padding:20px}
.modal-mask.show{display:flex}                    /* 加上 .show 才显示 */
.modal-box{position:relative;background:#fff;border-radius:16px;padding:34px 30px;
           max-width:360px;width:100%;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.25);
           animation:pop .25s ease}
@keyframes pop{from{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}
.modal-box h3{font-size:20px;color:var(--red);margin-bottom:6px}
.modal-close{position:absolute;top:10px;right:16px;border:none;background:none;
             font-size:28px;line-height:1;color:#999;cursor:pointer}
.modal-close:hover{color:var(--red)}
.cm-car{font-weight:700;font-size:16px;color:var(--ink);margin-bottom:18px}
.cm-info{background:var(--gray-l);border-radius:12px;padding:12px 14px;margin-bottom:18px;text-align:left}
.cm-row{display:flex;justify-content:space-between;align-items:center;padding:6px 0;font-size:15px}
.cm-row span{color:var(--gray)}
.cm-row b{color:var(--red);font-size:17px}
.cm-qr{width:200px;height:200px;margin:0 auto;border:1px solid var(--gray-m);border-radius:12px;
       display:flex;align-items:center;justify-content:center;overflow:hidden;background:#fafafa}
.cm-qr img{max-width:100%;max-height:100%}
.qr-text{font-size:15px;font-weight:700;color:var(--ink);margin-top:14px}
.cm-wechat{font-size:13px;color:var(--gray);margin-top:6px}
.no-qr{font-size:13px;color:#bbb}