/* roulang page: index */
:root{
            --ink:#202624;
            --muted:#6d7771;
            --paper:#f6f5f0;
            --white:#fff;
            --line:#dfe3dc;
            --orange:#e87532;
            --orange-dark:#c95d20;
            --lime:#c6dc54;
            --teal:#327f76;
            --deep:#202b28;
            --sand:#eae6d9;
            --radius:16px;
            --shadow:0 16px 42px rgba(28,39,34,.09);
            --container:1240px;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:"Noto Sans SC","思源黑体","Microsoft YaHei","PingFang SC",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:16px;overflow-x:hidden}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%;width:100%;object-fit:cover}
        button,input,textarea{font:inherit}
        button{border:0;cursor:pointer}
        :focus-visible{outline:3px solid rgba(232,117,50,.5);outline-offset:3px}
        .container{width:min(var(--container),calc(100% - 48px));margin:auto}
        .topbar{background:var(--deep);color:#dbe3da;font-size:13px;height:38px}
        .topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between}
        .topbar strong{color:var(--lime);font-weight:600}
        .toplinks{display:flex;gap:22px}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(246,245,240,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
        .nav-row{height:78px;display:flex;align-items:center;gap:36px}
        .brand{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;white-space:nowrap}
        .brand-mark{width:35px;height:35px;background:var(--orange);border-radius:10px 10px 10px 3px;position:relative}
        .brand-mark:after{content:"";position:absolute;left:8px;right:7px;top:16px;height:3px;background:var(--white);box-shadow:7px -7px 0 -1px var(--white),14px 7px 0 -1px var(--white)}
        .nav-list{display:flex;align-items:center;gap:24px;margin-left:auto}
        .nav-list a{font-size:14px;color:#4e5953;padding:10px 2px;position:relative;white-space:nowrap}
        .nav-list a:after{content:"";position:absolute;left:0;right:100%;bottom:3px;height:2px;background:var(--orange);transition:.2s}
        .nav-list a:hover,.nav-list a.active{color:var(--ink)}
        .nav-list a:hover:after,.nav-list a.active:after{right:0}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:9px;font-weight:700;transition:.22s}
        .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 rgba(255,255,255,.42);color:#fff;background:transparent}
        .btn-secondary:hover{background:#fff;color:var(--deep)}
        .menu-toggle{display:none;background:none;font-size:26px;color:var(--ink);min-width:44px;min-height:44px}
        .hero{min-height:650px;position:relative;color:white;display:flex;align-items:center;background:#33403b}
        .hero-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .5s}
        .hero-slide.active{opacity:1;visibility:visible}
        .hero-slide img{height:650px;filter:brightness(.54) saturate(.78)}
        .hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(21,29,27,.84) 0%,rgba(21,29,27,.47) 50%,rgba(21,29,27,.12) 100%)}
        .hero-content{position:relative;z-index:2;padding:105px 0 90px;max-width:760px}
        .eyebrow{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--lime);font-weight:700;margin-bottom:18px}
        h1{font-size:clamp(42px,6vw,74px);line-height:1.14;letter-spacing:-.04em;margin-bottom:24px}
        .hero-copy{font-size:18px;line-height:1.9;color:#e8eee8;max-width:690px;margin-bottom:30px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .hero-note{display:flex;gap:20px;flex-wrap:wrap;margin-top:48px;color:#e5ebe4;font-size:13px}
        .hero-note span{border-left:2px solid var(--lime);padding-left:10px}
        .slider-controls{position:absolute;right:calc((100% - var(--container))/2);bottom:40px;z-index:3;display:flex;gap:8px}
        .dot{width:42px;height:5px;background:rgba(255,255,255,.35);border-radius:3px}
        .dot.active{background:var(--lime)}
        .section{padding:112px 0}
        .section-head{max-width:700px;margin-bottom:48px}
        .section-kicker{color:var(--orange);font-size:13px;font-weight:800;letter-spacing:.12em;margin-bottom:12px}
        h2{font-size:clamp(30px,4vw,50px);line-height:1.25;letter-spacing:-.035em;margin-bottom:16px}
        h3{font-size:20px;line-height:1.4;margin-bottom:10px}
        .section-head p,.intro-copy p{color:var(--muted);line-height:1.9}
        .pain{background:#eeece4}
        .pain-grid{display:grid;grid-template-columns:1fr 1.45fr;gap:70px;align-items:start}
        .pain-lead{font-size:21px;line-height:1.7}
        .pain-list{border-top:1px solid #cbd0c8}
        .pain-item{display:grid;grid-template-columns:60px 1fr;gap:20px;padding:22px 0;border-bottom:1px solid #cbd0c8}
        .num{color:var(--orange);font-weight:800;font-size:14px}
        .pain-item p{color:var(--muted);font-size:14px}
        .intro{background:var(--white)}
        .intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:80px;align-items:center}
        .intro-media{position:relative}
        .intro-media img{height:450px;border-radius:18px}
        .floating-data{position:absolute;right:-28px;bottom:28px;background:var(--deep);color:#fff;padding:22px;border-left:5px solid var(--lime);width:220px}
        .floating-data b{font-size:28px;color:var(--lime);display:block}
        .intro-copy ul{list-style:none;margin-top:26px;display:grid;gap:12px}
        .intro-copy li{padding-left:24px;position:relative}
        .intro-copy li:before{content:"";position:absolute;left:0;top:12px;width:9px;height:9px;border-radius:50%;background:var(--orange)}
        .process{background:var(--sand)}
        .process-track{display:grid;grid-template-columns:repeat(5,1fr);position:relative;gap:20px}
        .process-track:before{content:"";position:absolute;top:25px;left:6%;right:6%;height:2px;background:#bfc9b9}
        .step{position:relative;z-index:1}
        .step-dot{width:52px;height:52px;border-radius:50%;background:var(--deep);color:var(--lime);display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:20px;border:5px solid var(--sand)}
        .step p{font-size:14px;color:var(--muted);line-height:1.7}
        .advantages{background:var(--paper)}
        .adv-grid{display:grid;grid-template-columns:1.25fr .9fr .9fr;gap:16px}
        .adv-card{background:#fff;border:1px solid var(--line);padding:28px;min-height:190px;border-radius:var(--radius);transition:.25s}
        .adv-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c6d19d}
        .adv-card.feature{grid-row:span 2;background:var(--deep);color:#fff;min-height:396px;display:flex;flex-direction:column;justify-content:flex-end}
        .adv-card p{font-size:14px;color:var(--muted);line-height:1.7}
        .adv-card.feature p{color:#c9d5cd}
        .card-no{color:var(--orange);font-weight:800;font-size:13px;margin-bottom:22px}
        .feature .card-no{color:var(--lime)}
        .icon{font-size:25px;margin-bottom:15px}
        .products{background:#fff}
        .product-grid{display:grid;grid-template-columns:1.35fr .82fr .82fr;gap:16px}
        .product-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--paper);transition:.25s}
        .product-card:first-child{background:var(--deep);color:#fff}
        .product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
        .product-card img{height:190px}
        .product-card:first-child img{height:255px}
        .product-body{padding:25px}
        .product-body p{color:var(--muted);font-size:14px;line-height:1.7;margin:12px 0 18px}
        .product-card:first-child p{color:#c9d5cd}
        .tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:20px}
        .tag{font-size:12px;padding:4px 9px;border-radius:99px;background:#e4e9dd;color:#49604e}
        .product-card:first-child .tag{background:#394a42;color:var(--lime)}
        .text-link{color:var(--orange);font-weight:700;font-size:14px}
        .dark-case{background:var(--deep);color:#fff}
        .dark-case .section-head p{color:#c6d1c8}
        .case-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}
        .case-image{height:360px;border-radius:14px;overflow:hidden}
        .case-image img{height:100%}
        .case-points{display:grid;gap:12px}
        .case-point{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid #45544c;padding:16px 0}
        .case-point span{color:#b9c7bb;font-size:14px}.case-point b{color:var(--lime);font-size:18px}
        .stories{background:#eee9dd}
        .story-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .story{background:#fff;padding:24px;border-radius:14px;border-top:4px solid var(--orange)}
        .story img{height:120px;border-radius:9px;margin-bottom:20px}
        .story p{font-size:14px;color:var(--muted);line-height:1.8}
        .story-meta{font-size:13px;font-weight:700;margin-top:16px}
        .stats{background:var(--orange);color:#fff}
        .stats .section-kicker{color:#ffe5bc}
        .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
        .stat{border-left:1px solid rgba(255,255,255,.45);padding-left:24px}
        .stat strong{font-size:48px;line-height:1;display:block;margin-bottom:14px}.stat small{color:#fff0dd;font-size:13px}
        .quotes{background:#fff}
        .quote-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:16px}
        .quote{padding:30px;background:var(--paper);border-radius:14px;min-height:220px;display:flex;flex-direction:column;justify-content:space-between}
        .quote:first-child{background:#e5efd1}
        .quote mark{background:none;color:var(--orange);font-size:42px;line-height:.8}
        .quote p{font-size:17px;line-height:1.8}.quote small{color:var(--muted)}
        .scenes{background:var(--paper)}
        .scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
        .scene{padding:24px;border:1px solid var(--line);background:#fff;min-height:175px;border-radius:12px}
        .scene:nth-child(2),.scene:nth-child(5){background:var(--deep);color:#fff}
        .scene:nth-child(2) p,.scene:nth-child(5) p{color:#cbd5ce}
        .scene p{color:var(--muted);font-size:14px;line-height:1.7}
        .news{background:#fff}
        .news-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
        .news-main{position:relative;min-height:340px;border-radius:15px;overflow:hidden;color:#fff}
        .news-main img{height:100%;position:absolute;inset:0;filter:brightness(.55)}
        .news-main div{position:absolute;left:30px;right:30px;bottom:28px}
        .news-main p{margin-top:10px;color:#edf0eb}
        .news-list{display:grid;gap:12px}
        .news-item{padding:20px;border:1px solid var(--line);border-radius:12px}
        .news-item time{font-size:12px;color:var(--orange)}.news-item h3{font-size:17px;margin:5px 0}.news-item p{font-size:13px;color:var(--muted)}
        .trust{background:#eeece4}
        .trust-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
        .metric-table{background:#fff;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
        .metric-row{display:grid;grid-template-columns:1fr 1fr;padding:16px 20px;border-bottom:1px solid var(--line);font-size:14px}.metric-row:last-child{border:0}.metric-row span{color:var(--muted)}
        .trust-notes{display:grid;gap:18px}.trust-note{padding-left:18px;border-left:3px solid var(--teal)}.trust-note p{color:var(--muted);font-size:14px}
        .faq{background:#fff}
        .faq-list{max-width:900px;border-top:1px solid var(--line)}
        .faq-item{border-bottom:1px solid var(--line)}
        .faq-q{width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;text-align:left;background:none;font-weight:700;color:var(--ink);padding:12px 0}
        .faq-q span:last-child{color:var(--orange);font-size:23px;transition:.2s}.faq-item.open .faq-q span:last-child{transform:rotate(45deg)}
        .faq-a{display:none;color:var(--muted);font-size:14px;line-height:1.8;padding:0 40px 20px 0}.faq-item.open .faq-a{display:block}
        .cta-section{padding:90px 0;background:var(--deep);color:#fff}
        .cta-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px;align-items:start}
        .cta-section .section-kicker{color:var(--lime)}.cta-section p{color:#c7d2c9}
        .contact-info{display:grid;gap:15px;margin-top:25px;color:#dce6dd;font-size:14px}
        .contact-info strong{color:#fff;display:inline-block;width:70px}
        .form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
        .field{display:grid;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;color:#d5ded6}
        input,textarea{width:100%;border:1px solid #53625a;background:#293732;color:#fff;border-radius:8px;padding:13px 14px;min-height:48px;transition:.2s}
        textarea{min-height:105px;resize:vertical}input:focus,textarea:focus{border-color:var(--lime);outline:none;box-shadow:0 0 0 3px rgba(198,220,84,.15)}
        .form .btn{margin-top:4px}.form-status{grid-column:1/-1;font-size:13px;color:var(--lime);min-height:22px}
        footer{background:#18211f;color:#aeb9b0;padding:38px 0 24px;font-size:13px}
        .footer-top{display:flex;justify-content:space-between;gap:30px;padding-bottom:30px;border-bottom:1px solid #36423c}
        .footer-brand{color:#fff;font-size:18px;font-weight:800}.footer-links{display:flex;gap:22px}.footer-links a:hover{color:var(--lime)}
        .copyright{display:flex;justify-content:space-between;gap:20px;padding-top:20px;flex-wrap:wrap}
        @media(max-width:1024px){
            .nav-row{gap:18px}.nav-list{gap:13px}.nav-list a{font-size:13px}.nav-cta{padding:0 13px}
            .pain-grid,.intro-grid,.case-grid,.cta-grid{gap:38px}.adv-grid{grid-template-columns:1fr 1fr}.adv-card.feature{grid-row:auto;grid-column:span 2;min-height:260px}
            .product-grid{grid-template-columns:1fr 1fr}.product-card:first-child{grid-column:span 2}.scene-grid{grid-template-columns:repeat(2,1fr)}
        }
        @media(max-width:768px){
            .container{width:min(100% - 40px,var(--container))}.topbar{height:auto;padding:7px 0}.toplinks{display:none}
            .nav-row{height:68px;justify-content:space-between}.menu-toggle{display:block}.nav-cta{display:none}
            .nav-list{position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 20px 20px;display:none;flex-direction:column;align-items:stretch;gap:2px;box-shadow:0 15px 25px rgba(0,0,0,.08)}
            .nav-list.open{display:flex}.nav-list a{padding:12px 4px;min-height:44px}.nav-list a:after{bottom:5px}
            .hero,.hero-slide img{min-height:600px;height:600px}.hero-content{padding:75px 0 80px}.hero-copy{font-size:16px}
            .section{padding:76px 0}.pain-grid,.intro-grid,.case-grid,.trust-grid,.news-layout,.cta-grid{grid-template-columns:1fr}
            .floating-data{right:16px}.process-track{grid-template-columns:1fr;gap:22px}.process-track:before{left:25px;top:25px;bottom:25px;width:2px;height:auto;right:auto}.step{display:grid;grid-template-columns:52px 1fr;column-gap:18px}.step-dot{grid-row:span 2}.step h3{margin-top:4px}
            .story-row,.quote-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr);gap:30px}.stat{border-left:0;padding-left:0}
            .news-main{min-height:280px}.footer-top{display:block}.footer-links{margin-top:20px;flex-wrap:wrap}.form{grid-template-columns:1fr}.field.full,.form-status{grid-column:auto}
        }
        @media(max-width:520px){
            h1{font-size:40px}.hero-actions .btn{width:100%}.hero-note{gap:11px;margin-top:32px}.hero-note span{font-size:12px}
            .adv-grid,.product-grid,.scene-grid{grid-template-columns:1fr}.adv-card.feature,.product-card:first-child{grid-column:auto}.adv-card.feature{min-height:280px}
            .stats-grid{grid-template-columns:1fr 1fr}.stat strong{font-size:36px}.copyright{display:block}.copyright div+div{margin-top:8px}
        }
        @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}