/* roulang page: index */
:root{
      --orange:#f36b32;
      --orange-dark:#c94c1d;
      --mint:#79c9a4;
      --mint-light:#e3f4ea;
      --ink:#202521;
      --muted:#69716b;
      --paper:#fbfaf6;
      --warm:#f3efe7;
      --line:#e3ded4;
      --dark:#202622;
      --dark-2:#2b332d;
      --white:#fff;
      --radius:22px;
      --shadow:0 16px 40px rgba(31,37,32,.08);
      --container:1200px;
      --ease:all .28s ease;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;line-height:1.7;font-size:16px}
    body,button,input,select,textarea{font-family:inherit}
    a{color:inherit;text-decoration:none}
    img{display:block;width:100%;max-width:100%;object-fit:cover}
    button,input,select,textarea{font-size:inherit}
    button{border:0;cursor:pointer}
    :focus-visible{outline:3px solid var(--mint);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:3px;background:var(--orange);border-radius:3px}
    h1,h2,h3,p{margin-top:0}
    h1,h2,h3{line-height:1.18;letter-spacing:-.04em}
    h1{font-size:clamp(42px,6vw,78px);margin-bottom:22px}
    h2{font-size:clamp(30px,4vw,50px);margin-bottom:16px}
    h3{font-size:21px;margin-bottom:10px}
    .section{padding:110px 0;scroll-margin-top:112px}
    .section-head{max-width:720px;margin-bottom:44px}
    .section-head p{color:var(--muted);font-size:17px;max-width:650px}
    .topline{height:42px;background:var(--dark);color:#dce5db;font-size:13px}
    .topline .container{height:100%;display:flex;align-items:center;justify-content:space-between}
    .topline span{display:flex;align-items:center;gap:9px}
    .status-dot{width:8px;height:8px;background:var(--mint);border-radius:50%;box-shadow:0 0 0 5px rgba(121,201,164,.14)}
    .header{position:sticky;top:0;z-index:20;background:rgba(251,250,246,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .nav{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;font-weight:900;font-size:20px;white-space:nowrap}
    .logo-mark{width:35px;height:35px;background:var(--orange);border-radius:11px;position:relative}
    .logo-mark:before{content:"";position:absolute;width:12px;height:20px;border:3px solid var(--white);border-left:0;border-radius:0 10px 10px 0;left:9px;top:7px}
    .logo-mark:after{content:"";position:absolute;width:7px;height:3px;background:var(--mint);right:3px;top:16px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;border-radius:10px;font-size:14px;color:#4f5951;transition:var(--ease)}
    .nav-links a:hover,.nav-links a.active{color:var(--orange-dark);background:#fff0e8}
    .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:13px 20px;font-weight:800;transition:var(--ease)}
    .nav-cta,.btn-primary{background:var(--orange);color:#fff}
    .nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px)}
    .btn-secondary{border:1px solid #b8b5ab;color:var(--ink);background:transparent}
    .btn-secondary:hover{border-color:var(--orange);color:var(--orange-dark);transform:translateY(-2px)}
    .menu-btn{display:none;background:transparent;font-size:25px;padding:8px}
    .hero{min-height:720px;position:relative;color:#fff;display:flex;align-items:center;overflow:hidden;background:#303a32}
    .hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity .7s}
    .hero-slide.active{opacity:1}
    .hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,25,20,.88) 0%,rgba(18,25,20,.56) 48%,rgba(18,25,20,.12) 100%)}
    .hero-content{position:relative;z-index:2;width:min(750px,100%);padding:90px 0}
    .hero .eyebrow{color:var(--mint-light)}
    .hero h1{max-width:700px}
    .hero-copy{font-size:18px;color:#eef3eb;max-width:680px;margin-bottom:31px}
    .hero-actions{display:flex;gap:13px;flex-wrap:wrap}
    .hero .btn-secondary{border-color:rgba(255,255,255,.6);color:#fff}
    .hero-meta{display:flex;gap:30px;margin-top:45px;flex-wrap:wrap}
    .hero-meta strong{display:block;font-size:25px;color:var(--mint-light)}
    .hero-meta small{color:#cad4ca}
    .hero-tools{position:absolute;right:7%;bottom:55px;z-index:3;display:flex;align-items:center;gap:18px}
    .charge-ring{width:88px;height:88px;border:7px solid rgba(255,255,255,.22);border-top-color:var(--orange);border-right-color:var(--mint);border-radius:50%;display:grid;place-items:center;font-weight:800}
    .hero-tools small{color:#e8eee7}
    .slider-dots{position:absolute;z-index:4;bottom:30px;left:50%;display:flex;gap:8px}
    .slider-dots button{width:28px;height:4px;background:rgba(255,255,255,.45);border-radius:5px;padding:0}
    .slider-dots button.active{background:var(--orange);width:48px}
    .intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}
    .intro-image{position:relative}
    .intro-image img{height:470px;border-radius:var(--radius)}
    .image-note{position:absolute;bottom:22px;left:22px;background:var(--dark);color:#fff;border-left:4px solid var(--orange);padding:15px 18px;border-radius:12px;font-size:14px}
    .entry-list{border-top:1px solid var(--line)}
    .entry{display:grid;grid-template-columns:80px 1fr auto;gap:20px;align-items:center;padding:23px 0;border-bottom:1px solid var(--line);transition:var(--ease)}
    .entry:hover{padding-left:10px;color:var(--orange-dark)}
    .entry-no{font-size:14px;color:var(--orange);font-weight:900}
    .entry p{margin:0;color:var(--muted);font-size:14px}
    .arrow{font-size:22px}
    .feature-strip{background:var(--mint-light);padding:0}
    .features{display:grid;grid-template-columns:repeat(3,1fr)}
    .feature{padding:35px 30px;border-right:1px solid rgba(41,82,58,.14)}
    .feature:last-child{border:0}
    .feature-icon{color:var(--orange);font-size:28px;margin-bottom:15px}
    .feature p{color:#56665a;font-size:14px}
    .tag{display:inline-block;padding:5px 10px;background:#fff3e9;color:var(--orange-dark);border-radius:20px;font-size:12px;font-weight:800}
    .products{background:var(--warm)}
    .product-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px}
    .product{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:var(--ease)}
    .product:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
    .product img{height:220px;transition:transform .45s}
    .product:hover img{transform:scale(1.04)}
    .product-body{padding:24px}
    .product-body p{color:var(--muted);font-size:14px;min-height:68px}
    .product-foot{display:flex;align-items:center;justify-content:space-between;margin-top:19px;padding-top:17px;border-top:1px solid var(--line);font-size:13px}
    .product-foot a{color:var(--orange-dark);font-weight:800}
    .scenes{background:#fff}
    .scene-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:36px;align-items:stretch}
    .scene-photo{min-height:440px;border-radius:var(--radius);background:url('/assets/images/4568d25ee9b19a90.webp') center/cover;position:relative;overflow:hidden}
    .scene-photo:after{content:"充电路径 · 停车空间 · 用电检查";position:absolute;bottom:22px;left:22px;color:#fff;background:rgba(25,32,27,.82);padding:11px 15px;border-radius:10px;font-size:13px}
    .scene-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
    .scene-tabs button{background:#f0eee8;color:#586057;border-radius:10px;padding:11px 15px}
    .scene-tabs button.active{background:var(--orange);color:#fff}
    .scene-panel{display:none}
    .scene-panel.active{display:block}
    .scene-panel h3{font-size:29px}
    .scene-panel p{color:var(--muted)}
    .scene-points{list-style:none;padding:0;margin:25px 0}
    .scene-points li{padding:11px 0;border-bottom:1px solid var(--line)}
    .scene-points li:before{content:"✓";color:var(--orange);font-weight:900;margin-right:10px}
    .dark-section{background:var(--dark);color:#fff;position:relative;overflow:hidden}
    .dark-section:before{content:"";position:absolute;width:460px;height:460px;border:1px solid rgba(121,201,164,.22);border-radius:50%;right:-130px;top:-170px}
    .case-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px;align-items:center;position:relative}
    .case-label{color:var(--mint);font-size:13px;font-weight:800}
    .case-layout p{color:#bdc8be}
    .case-line{height:3px;background:#3a453c;margin:27px 0}
    .case-line span{display:block;width:72%;height:100%;background:var(--orange)}
    .case-data{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .case-data div{border-left:2px solid var(--mint);padding-left:15px}
    .case-data strong{font-size:25px;display:block}
    .case-data small{color:#aeb9af}
    .safety-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px}
    .checks{display:grid;gap:13px}
    .check{padding:19px 20px;background:#fff;border:1px solid var(--line);border-radius:14px;display:flex;gap:15px}
    .check b{color:var(--orange-dark);font-size:18px}
    .parameter{border-top:2px solid var(--ink)}
    .parameter-row{display:grid;grid-template-columns:1fr 1fr;padding:16px 0;border-bottom:1px solid var(--line)}
    .parameter-row span:last-child{text-align:right;color:var(--muted)}
    .comparison{background:var(--warm)}
    .compare-wrap{overflow-x:auto}
    .compare{width:100%;min-width:650px;border-collapse:collapse;background:#fff;border-radius:18px;overflow:hidden}
    .compare th,.compare td{text-align:left;padding:19px 22px;border-bottom:1px solid var(--line)}
    .compare th{background:var(--dark);color:#fff;font-weight:700}
    .compare td:first-child{font-weight:800}
    .compare tr:last-child td{border-bottom:0}
    .story{display:grid;grid-template-columns:1fr .9fr;gap:70px;align-items:center}
    .quote{font-size:29px;line-height:1.45;letter-spacing:-.03em}
    .quote:before{content:"“";font-size:75px;color:var(--orange);display:block;height:48px}
    .story-card{background:var(--mint-light);border-radius:var(--radius);padding:32px}
    .route{display:flex;justify-content:space-between;gap:10px;margin-top:25px}
    .route span{font-size:13px;color:#4e6656;position:relative;padding-top:18px}
    .route span:before{content:"";position:absolute;top:0;left:0;width:11px;height:11px;border-radius:50%;background:var(--orange)}
    .stats{background:var(--orange);color:#fff;padding:45px 0}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
    .stat{border-right:1px solid rgba(255,255,255,.3)}
    .stat:last-child{border:0}
    .stat strong{font-size:38px;display:block;line-height:1.1}
    .stat span{font-size:13px;color:#fff0e8}
    .reviews{background:#fff}
    .review-layout{display:grid;grid-template-columns:1fr 1fr .6fr;gap:20px}
    .review{padding:29px;background:var(--warm);border-radius:18px}
    .review p{font-size:17px}
    .review small{color:var(--muted)}
    .review-score{background:var(--dark);color:#fff;border-radius:18px;padding:29px;display:flex;flex-direction:column;justify-content:center}
    .review-score strong{font-size:43px;color:var(--mint)}
    .news{background:var(--warm)}
    .news-list{display:grid;grid-template-columns:1.3fr .7fr;gap:20px}
    .news-feature{background:#fff;border-radius:var(--radius);overflow:hidden;display:grid;grid-template-columns:1fr 1fr}
    .news-feature img{height:100%;min-height:270px}
    .news-copy{padding:30px}
    .news-copy p,.news-mini p{font-size:14px;color:var(--muted)}
    .news-mini{background:#fff;border-radius:18px;padding:25px;margin-bottom:20px;border-left:4px solid var(--mint)}
    .news-mini:last-child{margin-bottom:0}
    .faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;background:none;text-align:left;padding:21px 0;font-weight:800;display:flex;justify-content:space-between;gap:15px}
    .faq-question span:last-child{color:var(--orange);font-size:23px}
    .faq-answer{display:none;color:var(--muted);padding:0 35px 22px 0}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .process{background:var(--mint-light);padding:45px 0}
    .process-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .process-step{position:relative;padding-right:16px}
    .process-step:not(:last-child):after{content:"→";position:absolute;right:0;top:4px;color:var(--orange);font-size:22px}
    .process-step b{display:block;color:var(--orange-dark);font-size:14px;margin-bottom:7px}
    .process-step span{font-weight:800}
    .contact{background:var(--orange);color:#fff;padding:100px 0 115px}
    .contact-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px;align-items:start}
    .contact p{color:#fff4ee}
    .contact-form{background:#fff;color:var(--ink);border-radius:var(--radius);padding:30px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .field{display:flex;flex-direction:column;gap:7px}
    .field.full{grid-column:1/-1}
    .field label{font-size:13px;font-weight:800}
    .field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 13px;background:#fff}
    .field textarea{min-height:90px;resize:vertical}
    .form-note{grid-column:1/-1;color:var(--muted);font-size:12px}
    .contact-form .btn{grid-column:1/-1}
    .form-success{display:none;grid-column:1/-1;background:var(--mint-light);color:#24583c;padding:12px;border-radius:9px;font-size:14px}
    .footer{background:var(--dark);color:#dce5db;padding:48px 0 105px}
    .footer-grid{display:grid;grid-template-columns:1.3fr .7fr .9fr;gap:50px}
    .footer .logo{color:#fff;margin-bottom:15px}
    .footer p,.footer li{font-size:13px;color:#aeb9af}
    .footer ul{list-style:none;padding:0;margin:0;line-height:2.2}
    .footer h3{font-size:16px;color:#fff;letter-spacing:0}
    .copyright{border-top:1px solid #3b443d;margin-top:35px;padding-top:20px;color:#8d998f;font-size:12px}
    .fixed-cta{position:fixed;z-index:15;right:22px;bottom:20px;background:var(--dark);color:#fff;border-radius:15px;padding:12px 14px 12px 19px;display:flex;align-items:center;gap:15px;box-shadow:0 10px 30px rgba(0,0,0,.2)}
    .fixed-cta a{background:var(--orange);border-radius:9px;padding:8px 13px;font-weight:800;font-size:13px}
    @media(max-width:1024px){
      .nav-links a{padding:9px 8px;font-size:13px}
      .intro-grid,.scene-layout,.case-layout,.story,.faq-layout,.contact-layout{gap:35px}
      .case-layout{grid-template-columns:1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(100% - 32px,var(--container))}
      .topline{display:none}
      .header{position:sticky}
      .nav{height:68px}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);padding:14px 16px 20px;border-bottom:1px solid var(--line);box-shadow:0 12px 25px rgba(0,0,0,.08);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}
      .nav-links a{padding:13px 14px}
      .nav-cta{display:none}
      .menu-btn{display:block}
      .hero{min-height:650px}
      .hero-tools{right:20px;bottom:72px}
      .hero-meta{margin-top:32px;gap:20px}
      .section{padding:75px 0}
      .intro-grid,.scene-layout,.case-layout,.safety-grid,.story,.faq-layout,.contact-layout{grid-template-columns:1fr}
      .intro-image img{height:330px}
      .features,.product-grid,.review-layout,.stats-grid,.news-list{grid-template-columns:1fr}
      .feature{border-right:0;border-bottom:1px solid rgba(41,82,58,.14)}
      .product-grid{gap:16px}
      .case-layout{gap:35px}
      .case-data{grid-template-columns:repeat(3,1fr)}
      .stats{padding:35px 0}
      .stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.3);padding-bottom:18px}
      .stat:last-child{border:0}
      .news-feature{grid-template-columns:1fr}
      .news-feature img{height:220px;min-height:0}
      .process-grid{grid-template-columns:repeat(5,minmax(130px,1fr));overflow-x:auto;padding-bottom:8px}
      .process-step{min-width:125px}
      .contact-form{grid-template-columns:1fr}
      .field.full,.form-note,.contact-form .btn,.form-success{grid-column:auto}
      .fixed-cta{left:12px;right:12px;bottom:12px;justify-content:space-between}
      .footer{padding-bottom:105px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
    }
    @media(max-width:520px){
      h1{font-size:42px}
      h2{font-size:32px}
      .hero-copy{font-size:16px}
      .hero-tools{display:none}
      .entry{grid-template-columns:42px 1fr auto;gap:10px}
      .case-data strong{font-size:20px}
      .quote{font-size:24px}
      .contact{padding:75px 0 90px}
    }
    @media(prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
    }