/* 成都广宇星灯具 - 18 模块全局样式
   设计原则：Flex 布局 / 系统字体 / 1:1 图片 / 无 float / 5 必选 + 13 选用 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.6;color:var(--text);background:var(--bg);font-size:15px}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary)}
img,svg{display:block;max-width:100%;height:auto;aspect-ratio:1/1;object-fit:cover}
ul,ol{list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font:inherit}
h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:600}
h1{font-size:28px}
h2{font-size:24px}
h3{font-size:18px}
.container{max-width:1200px;margin:0 auto;padding:0 16px}
.row{display:flex;flex-wrap:wrap;gap:16px}
.col{flex:1 1 0}
.text-center{text-align:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:6px;font-weight:500;font-size:14px;transition:all .2s ease;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px)}
.btn-outline{border:1px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-lg{padding:14px 28px;font-size:16px}
.badge{display:inline-block;padding:3px 10px;border-radius:99px;background:var(--primary-soft);color:var(--primary-dark);font-size:12px;font-weight:500}
.section{padding:48px 0}
.section-title{text-align:center;margin-bottom:32px}
.section-title h2{color:var(--text);position:relative;display:inline-block;padding:0 16px}
.section-title h2::before,.section-title h2::after{content:"";position:absolute;top:50%;width:32px;height:2px;background:var(--primary)}
.section-title h2::before{left:-32px}
.section-title h2::after{right:-32px}
.section-subtitle{color:var(--muted);margin-top:8px;font-size:14px}
/* ====== [1] Topbar ====== */
.m-topbar{background:#0f172a;color:#cbd5e1;font-size:13px;padding:6px 0}
.m-topbar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.m-topbar a{color:#cbd5e1}
.m-topbar a:hover{color:var(--accent)}
.m-topbar .tb-phone{color:#f5a623;font-weight:600}
/* ====== [2] Nav ====== */
.m-nav{position:sticky;top:0;z-index:50;background:#fff;box-shadow:var(--shadow)}
.m-nav .container{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;gap:16px}
.m-nav-logo{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--primary);font-size:18px}
.m-nav-logo svg{width:36px;height:36px;flex:0 0 36px}
.m-nav-menu{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.m-nav-menu a{padding:8px 0;font-size:14px;font-weight:500;position:relative}
.m-nav-menu a.active::after,.m-nav-menu a:hover::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--primary)}
.m-nav-cta{display:flex;align-items:center;gap:8px}
.m-nav-burger{display:none;width:36px;height:36px;align-items:center;justify-content:center;background:var(--primary-soft);border-radius:6px}
.m-nav-burger span{width:18px;height:2px;background:var(--primary);position:relative;display:block}
.m-nav-burger span::before,.m-nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--primary)}
.m-nav-burger span::before{top:-6px}
.m-nav-burger span::after{top:6px}
/* ====== [3] Hero ====== */
.m-hero{background:linear-gradient(135deg,var(--primary-50),#fff);padding:48px 0;position:relative;overflow:hidden}
.m-hero::before{content:"";position:absolute;inset:0;background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60" viewBox="0 0 60 60"><circle cx="30" cy="30" r="1" fill="currentColor" opacity="0.05"/></svg>');color:var(--primary);pointer-events:none}
.m-hero .container{display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:center;position:relative;z-index:1}
.m-hero h1{font-size:36px;margin-bottom:16px;color:var(--text);line-height:1.2}
.m-hero h1 em{color:var(--primary);font-style:normal}
.m-hero p.lead{color:var(--text-soft);font-size:16px;margin-bottom:24px;max-width:560px}
.m-hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px}
.m-hero-stats{display:flex;gap:24px;flex-wrap:wrap;color:var(--text-soft);font-size:13px}
.m-hero-stats strong{color:var(--primary);font-size:24px;display:block;font-weight:700}
.m-hero-image{position:relative;border-radius:12px;overflow:hidden;box-shadow:var(--shadow-lg);background:#fff;padding:8px}
.m-hero-image img{aspect-ratio:4/3;border-radius:8px}
.m-hero-badge{position:absolute;top:12px;left:12px;background:var(--accent);color:#fff;padding:4px 10px;border-radius:4px;font-size:12px;font-weight:500}
/* Hero variants for city templates */
body.tpl-cd_01 .m-hero{background:linear-gradient(135deg,#fef3c7,#fff)}
body.tpl-cd_02 .m-hero{background:linear-gradient(135deg,var(--primary-50),#fff);padding:64px 0}
body.tpl-cd_03 .m-hero .container{grid-template-columns:1fr 1.2fr}
body.tpl-cd_04 .m-hero{background:#0f172a;color:#e2e8f0}
body.tpl-cd_04 .m-hero h1,body.tpl-cd_04 .m-hero .lead{color:#fff}
body.tpl-cd_04 .m-hero-stats{color:#cbd5e1}
body.tpl-cd_05 .m-hero{background:linear-gradient(120deg,var(--primary-50),#fff 60%)}
/* ====== [4] AI Overview ====== */
.m-ai-overview{padding:24px 0;background:var(--bg-soft)}
.m-ai-overview-card{background:#fff;border-left:4px solid var(--primary);padding:20px 24px;border-radius:8px;box-shadow:var(--shadow);font-size:14px;color:var(--text-soft);line-height:1.8}
.m-ai-overview-card strong{color:var(--primary-dark)}
.m-ai-overview-card .ai-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.m-ai-overview-card .ai-tags span{background:var(--primary-50);color:var(--primary-dark);padding:3px 8px;border-radius:4px;font-size:12px}
/* ====== [5] Breadcrumb ====== */
.m-breadcrumb{padding:12px 0;background:var(--bg-soft);font-size:13px}
.m-breadcrumb ol{display:flex;flex-wrap:wrap;gap:4px;color:var(--muted)}
.m-breadcrumb li{display:flex;align-items:center;gap:4px}
.m-breadcrumb li::after{content:"/";color:#cbd5e1;margin-left:4px}
.m-breadcrumb li:last-child::after{display:none}
.m-breadcrumb li span{color:var(--text);font-weight:500}
.m-breadcrumb a:hover{color:var(--primary)}
/* ====== [6] 行业应用 ====== */
.m-industry{padding:48px 0}
.m-industry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.m-industry-card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:20px;transition:all .2s ease}
.m-industry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--primary)}
.m-industry-icon{width:48px;height:48px;background:var(--primary-soft);border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:22px;margin-bottom:12px;font-weight:700}
.m-industry-card h3{font-size:16px;margin-bottom:8px;color:var(--text)}
.m-industry-card .desc{font-size:13px;color:var(--text-soft);margin-bottom:8px}
.m-industry-card .pain{font-size:12px;color:var(--muted);margin-bottom:8px}
.m-industry-card .tags{display:flex;flex-wrap:wrap;gap:4px}
.m-industry-card .tags span{background:var(--bg-soft);color:var(--text-soft);padding:2px 6px;border-radius:3px;font-size:11px}
/* ====== [7] 产品中心 ====== */
.m-products{padding:48px 0;background:var(--bg-soft)}
.m-products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.m-product-card{background:#fff;border-radius:8px;overflow:hidden;border:1px solid var(--line);transition:all .2s ease}
.m-product-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--primary)}
.m-product-image{aspect-ratio:1/1;background:var(--bg-soft);overflow:hidden}
.m-product-image img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.m-product-card:hover .m-product-image img{transform:scale(1.05)}
.m-product-info{padding:12px}
.m-product-info h3{font-size:14px;margin-bottom:4px;color:var(--text)}
.m-product-info .model{font-size:12px;color:var(--muted);margin-bottom:6px}
.m-product-info .intro{font-size:12px;color:var(--text-soft);margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.m-product-info .btn{padding:5px 10px;font-size:12px}
/* ====== [8] 关于我们 ====== */
.m-about{padding:48px 0}
.m-about .container{display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:center}
.m-about-text h2{margin-bottom:16px;color:var(--text)}
.m-about-text p{color:var(--text-soft);margin-bottom:12px}
.m-about-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.m-about-badges .badge{padding:6px 14px;font-size:13px}
.m-about-image{border-radius:12px;overflow:hidden;box-shadow:var(--shadow-lg)}
/* ====== [9] 技术专题 ====== */
.m-tech{padding:48px 0;background:var(--bg-soft)}
.m-tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.m-tech-card{background:#fff;border-radius:8px;padding:20px;border-left:3px solid var(--primary)}
.m-tech-card h3{font-size:15px;margin-bottom:8px;color:var(--text)}
.m-tech-card p{font-size:13px;color:var(--text-soft);margin-bottom:10px;line-height:1.6}
.m-tech-card .tags{display:flex;flex-wrap:wrap;gap:4px}
.m-tech-card .tags span{background:var(--primary-50);color:var(--primary-dark);padding:2px 6px;border-radius:3px;font-size:11px}
/* ====== [10] 解决方案 ====== */
.m-solution{padding:48px 0}
.m-solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.m-solution-card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:20px;border-top:3px solid var(--primary-dark);position:relative}
.m-solution-card h3{font-size:15px;margin-bottom:6px;color:var(--text)}
.m-solution-card .scene{font-size:12px;color:var(--primary);margin-bottom:8px}
.m-solution-card p{font-size:13px;color:var(--text-soft);line-height:1.6}
/* ====== [11] 优势展示 ====== */
.m-advantages{padding:48px 0;background:var(--bg-soft)}
.m-advantages-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.m-advantage-card{background:#fff;border-radius:8px;padding:20px;text-align:center;border:1px solid var(--line)}
.m-advantage-card .icon{width:48px;height:48px;background:var(--primary-soft);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;color:var(--primary);font-size:22px;font-weight:700}
.m-advantage-card h3{font-size:14px;margin-bottom:6px;color:var(--text)}
.m-advantage-card p{font-size:12px;color:var(--text-soft);line-height:1.5}
/* ====== [12] 服务流程 ====== */
.m-process{padding:48px 0}
.m-process-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;counter-reset:step}
.m-process-step{background:#fff;border:1px solid var(--line);border-radius:8px;padding:20px;text-align:center;position:relative}
.m-process-step::before{counter-increment:step;content:counter(step);position:absolute;top:-16px;left:50%;transform:translateX(-50%);width:32px;height:32px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.m-process-step h3{font-size:14px;margin:8px 0 6px;color:var(--text)}
.m-process-step p{font-size:12px;color:var(--text-soft);line-height:1.5}
/* ====== [13] 客户案例 ====== */
.m-cases{padding:48px 0;background:var(--bg-soft)}
.m-cases-privacy{text-align:center;font-size:12px;color:var(--muted);margin-bottom:16px;font-style:italic}
.m-cases-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.m-case-card{background:#fff;border-radius:8px;padding:20px;border-left:3px solid var(--primary);position:relative}
.m-case-card .industry{position:absolute;top:12px;right:12px;font-size:11px;background:var(--primary-soft);color:var(--primary-dark);padding:2px 8px;border-radius:3px}
.m-case-card h3{font-size:14px;margin-bottom:8px;color:var(--text);padding-right:60px}
.m-case-card .location{font-size:12px;color:var(--muted);margin-bottom:8px}
.m-case-card .spec{font-size:12px;color:var(--primary);margin-bottom:8px;font-weight:500}
.m-case-card .effect{font-size:12px;color:var(--text-soft);line-height:1.5}
/* ====== [14] 技术负责人 ====== */
.m-director{padding:48px 0}
.m-director .container{display:grid;grid-template-columns:280px 1fr;gap:32px;align-items:center}
.m-director-avatar{width:240px;height:240px;border-radius:50%;overflow:hidden;box-shadow:var(--shadow-lg);border:6px solid var(--primary-soft);margin:0 auto}
.m-director-avatar img{width:100%;height:100%;object-fit:cover}
.m-director-info h2{font-size:24px;margin-bottom:8px;color:var(--text)}
.m-director-info .title{color:var(--primary);font-weight:500;margin-bottom:4px}
.m-director-info .years{color:var(--text-soft);margin-bottom:16px}
.m-director-info .bio{color:var(--text-soft);line-height:1.8;margin-bottom:16px}
.m-director-info .skills{display:flex;flex-wrap:wrap;gap:8px}
.m-director-info .skills span{background:var(--primary-soft);color:var(--primary-dark);padding:4px 12px;border-radius:4px;font-size:13px}
/* ====== [15] 资质证书 ====== */
.m-cert{padding:48px 0;background:var(--bg-soft)}
.m-cert-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}
.m-cert-cell{aspect-ratio:1/1;border:1px solid var(--line);border-radius:6px;background:#fff;display:flex;align-items:center;justify-content:center;text-align:center;font-size:11px;color:var(--text-soft);padding:8px;overflow:hidden}
.m-cert-cell img{width:100%;height:100%;object-fit:contain;background:#fff}
/* ====== [16] FAQ ====== */
.m-faq{padding:48px 0}
.m-faq-list{max-width:880px;margin:0 auto}
.m-faq-item{background:#fff;border:1px solid var(--line);border-radius:8px;margin-bottom:8px;overflow:hidden;transition:all .2s ease}
.m-faq-item.open{border-color:var(--primary);box-shadow:var(--shadow)}
.m-faq-q{padding:14px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;font-weight:500;font-size:15px;color:var(--text)}
.m-faq-q::after{content:"+";font-size:20px;color:var(--primary);transition:transform .2s;flex:0 0 24px;height:24px;display:flex;align-items:center;justify-content:center;background:var(--primary-soft);border-radius:50%}
.m-faq-item.open .m-faq-q::after{content:"−";transform:rotate(180deg)}
.m-faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:all .3s ease;color:var(--text-soft);line-height:1.8;font-size:14px}
.m-faq-item.open .m-faq-a{padding:0 20px 16px;max-height:600px}
/* ====== [17] 联系我们 ====== */
.m-contact{padding:48px 0;background:var(--bg-soft)}
.m-contact .container{display:grid;grid-template-columns:1fr 360px;gap:32px;align-items:start}
.m-contact-info{background:#fff;padding:24px;border-radius:8px;box-shadow:var(--shadow)}
.m-contact-info h2{margin-bottom:16px;color:var(--text)}
.m-contact-item{display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.m-contact-item:last-child{border-bottom:none}
.m-contact-item .icon{width:40px;height:40px;background:var(--primary-soft);border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--primary);flex:0 0 40px;font-size:18px}
.m-contact-item .label{font-size:12px;color:var(--muted);margin-bottom:2px}
.m-contact-item .value{color:var(--text);font-weight:500;font-size:14px}
.m-contact-qr{background:#fff;padding:20px;border-radius:8px;box-shadow:var(--shadow);text-align:center}
.m-contact-qr img{aspect-ratio:1/1;width:200px;height:200px;margin:0 auto 12px;border:1px solid var(--line);padding:8px;background:#fff}
.m-contact-qr .label{color:var(--text-soft);font-size:14px}
.m-contact-qr .sub{color:var(--muted);font-size:12px;margin-top:4px}
/* ====== [18] Footer ====== */
.m-footer{background:#0f172a;color:#cbd5e1;padding:32px 0 16px;font-size:13px}
.m-footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:24px}
.m-footer h4{color:#fff;font-size:14px;margin-bottom:12px;font-weight:600}
.m-footer ul li{padding:4px 0}
.m-footer a{color:#94a3b8}
.m-footer a:hover{color:var(--accent)}
.m-footer-bottom{border-top:1px solid #1e293b;padding-top:16px;text-align:center;color:#64748b;font-size:12px;line-height:1.8}
.m-footer-bottom a{color:#94a3b8}
/* ====== CTA / Floating ====== */
.m-cta-band{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;padding:32px 0;text-align:center}
.m-cta-band h2{color:#fff;margin-bottom:8px}
.m-cta-band p{color:rgba(255,255,255,.85);margin-bottom:16px}
.m-cta-band .btn{background:#fff;color:var(--primary);font-weight:600}
.m-cta-band .btn:hover{background:var(--accent);color:#fff}
.m-floating{position:fixed;right:16px;bottom:24px;z-index:40;display:flex;flex-direction:column;gap:8px}
.m-floating a{width:48px;height:48px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);font-size:18px;transition:all .2s}
.m-floating a:hover{transform:scale(1.08);background:var(--accent)}
/* ====== Responsive ====== */
@media (max-width:1024px){
  .m-products-grid,.m-advantages-grid{grid-template-columns:repeat(3,1fr)}
  .m-industry-grid,.m-tech-grid,.m-solution-grid{grid-template-columns:repeat(2,1fr)}
  .m-process-grid{grid-template-columns:repeat(3,1fr)}
  .m-cert-grid{grid-template-columns:repeat(5,1fr)}
  .m-cases-grid{grid-template-columns:repeat(2,1fr)}
  .m-footer-grid{grid-template-columns:repeat(2,1fr)}
  .m-director .container{grid-template-columns:200px 1fr}
  .m-director-avatar{width:180px;height:180px}
}
@media (max-width:768px){
  h1{font-size:24px}
  h2{font-size:20px}
  .m-nav-menu{display:none}
  .m-nav-burger{display:flex}
  .m-hero{padding:32px 0}
  .m-hero .container{grid-template-columns:1fr;gap:24px}
  .m-hero h1{font-size:24px}
  .m-about .container{grid-template-columns:1fr}
  .m-contact .container{grid-template-columns:1fr}
  .m-products-grid,.m-industry-grid,.m-tech-grid,.m-solution-grid,.m-advantages-grid,.m-cases-grid{grid-template-columns:1fr}
  .m-process-grid{grid-template-columns:repeat(2,1fr)}
  .m-cert-grid{grid-template-columns:repeat(3,1fr)}
  .m-footer-grid{grid-template-columns:1fr}
  .m-director .container{grid-template-columns:1fr;text-align:center}
  .m-director-info .skills{justify-content:center}
}
@media (max-width:480px){
  .m-products-grid,.m-industry-grid,.m-tech-grid,.m-solution-grid,.m-advantages-grid,.m-cases-grid{grid-template-columns:1fr}
  .m-process-grid{grid-template-columns:1fr}
  .m-cert-grid{grid-template-columns:repeat(2,1fr)}
  .m-topbar .container{font-size:12px}
}

/* ====== 全国 hub 省份网格 ====== */
.m-hub-provinces{background:var(--bg-soft);padding:48px 0}
.prov-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.prov-card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px 12px;display:flex;flex-direction:column;align-items:center;gap:4px;transition:all .2s ease;border-top:3px solid hsl(var(--hue,0),70%,50%)}
.prov-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:hsl(var(--hue,0),70%,45%)}
.prov-card .prov-name{font-size:14px;font-weight:600;color:var(--text)}
.prov-card .prov-meta{font-size:11px;color:var(--muted)}
@media (max-width:900px){.prov-grid{grid-template-columns:repeat(4,1fr)}}
@media (max-width:600px){.prov-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:400px){.prov-grid{grid-template-columns:repeat(2,1fr)}}

/* ====== 产品卡扩展（价格） ====== */
.m-product-info .price{color:var(--primary-dark);font-weight:600;font-size:13px;margin-bottom:6px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;transition:all .2s ease}
.prod-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--primary)}
.prod-card img{width:100%;aspect-ratio:1/1;object-fit:cover}
.prod-card h3{font-size:14px;margin:12px 12px 4px;color:var(--text)}
.prod-card .model{font-size:12px;color:var(--muted);margin:0 12px 6px}
.prod-card .price{font-size:13px;color:var(--primary-dark);font-weight:600;margin:0 12px 12px}