/* roulang page: index */
:root{
            --orange:#e66d32;
            --orange-dark:#c95420;
            --cream:#f8f2e9;
            --paper:#fffdf9;
            --ink:#252522;
            --muted:#77736d;
            --line:#e7ded2;
            --green:#687c68;
            --deep:#292b27;
            --shadow:0 14px 38px rgba(62,47,31,.09);
            --radius:16px;
            --container:1200px;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:"Noto Sans SC","Microsoft YaHei","PingFang SC",sans-serif;background:var(--paper);color:var(--ink);line-height:1.75;font-size:15px}
        img{display:block;max-width:100%;height:auto}
        a{color:inherit;text-decoration:none}
        button,input,textarea{font:inherit}
        button{cursor:pointer;border:0}
        :focus-visible{outline:3px solid rgba(230,109,50,.4);outline-offset:3px}
        .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
        .topbar{height:78px;display:flex;align-items:center;border-bottom:1px solid rgba(231,222,210,.8);background:rgba(255,253,249,.94);position:sticky;top:0;z-index:20;backdrop-filter:blur(10px)}
        .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
        .brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.04em;font-size:18px;white-space:nowrap}
        .brand-mark{width:36px;height:36px;border-radius:11px;background:var(--orange);color:#fff;display:grid;place-items:center;font-size:17px;box-shadow:5px 5px 0 #f3d6bd}
        .nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
        .nav-links a{font-size:14px;color:#5e5a53;transition:.25s}
        .nav-links a:hover,.nav-links a.active{color:var(--orange)}
        .nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:8px;padding:12px 19px;font-weight:700;transition:transform .25s,background .25s,box-shadow .25s}
        .nav-cta,.btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 18px rgba(230,109,50,.2)}
        .nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px)}
        .menu-toggle{display:none;background:transparent;font-size:24px;color:var(--ink)}
        .hero{min-height:650px;display:flex;align-items:center;position:relative;overflow:hidden;background:linear-gradient(90deg,rgba(250,244,234,.98) 0%,rgba(250,244,234,.9) 45%,rgba(250,244,234,.35)),url('/assets/images/83b24853c9e97614.jpg') center/cover}
        .hero:after{content:"";position:absolute;inset:auto 0 0;height:90px;background:linear-gradient(transparent,var(--paper))}
        .hero-content{position:relative;z-index:1;padding:86px 0 110px;max-width:780px}
        .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.14em;margin-bottom:22px}
        .eyebrow:before{content:"";width:28px;height:2px;background:var(--orange)}
        h1{font-size:clamp(42px,6vw,78px);line-height:1.12;letter-spacing:-.07em;max-width:780px;margin-bottom:26px}
        .hero-copy{font-size:17px;color:#555048;max-width:650px;line-height:1.95;margin-bottom:30px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .btn{min-height:48px}
        .btn-outline{border:1px solid #bfb4a6;color:var(--ink);background:rgba(255,253,249,.65)}
        .btn-outline:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
        .hero-note{display:flex;gap:24px;margin-top:34px;color:#6e675e;font-size:13px}
        .hero-note strong{display:block;color:var(--ink);font-size:17px}
        section{padding:94px 0;position:relative}
        .section-soft{background:var(--cream)}
        .section-dark{background:var(--deep);color:#fff}
        .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:38px}
        .kicker{font-size:12px;color:var(--orange);font-weight:800;letter-spacing:.13em;margin-bottom:9px}
        h2{font-size:clamp(27px,3.3vw,44px);line-height:1.2;letter-spacing:-.05em}
        .section-intro{max-width:510px;color:var(--muted);font-size:15px}
        .section-dark .section-intro{color:#c9c6bd}
        .stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .stat{padding:27px 24px;border-right:1px solid var(--line)}
        .stat:last-child{border:0}
        .stat-num{font-size:34px;font-weight:800;letter-spacing:-.05em;color:var(--orange)}
        .stat-name{font-weight:700;margin:4px 0}
        .stat small{color:var(--muted)}
        .feature-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr;grid-template-rows:1fr 1fr;gap:15px}
        .feature{min-height:190px;padding:28px;background:#f1e9de;border-radius:var(--radius);position:relative;overflow:hidden;border:1px solid transparent;transition:.3s}
        .feature:hover{transform:translateY(-4px);border-color:#e9b18f;box-shadow:var(--shadow)}
        .feature.large{grid-row:span 2;min-height:395px;background:linear-gradient(160deg,rgba(40,40,35,.45),rgba(40,40,35,.1)),url('/assets/images/d4fabe225b8ce799.jpg') center/cover;color:#fff;display:flex;flex-direction:column;justify-content:end}
        .feature.large .tag{background:var(--orange);color:#fff}
        .feature h3{font-size:21px;line-height:1.35;margin:15px 0 8px;letter-spacing:-.03em}
        .feature p{font-size:13px;color:var(--muted)}
        .feature.large p{color:#f3eee7}
        .tag{display:inline-block;background:#fff7ee;color:var(--orange-dark);font-size:11px;font-weight:800;padding:4px 9px;border-radius:5px}
        .matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}
        .matrix-item{grid-column:span 4;border-top:2px solid var(--ink);padding:19px 3px 10px;min-height:165px}
        .matrix-item:first-child{grid-column:span 6;background:#f4e2d3;padding:24px;border-top-color:var(--orange)}
        .matrix-item:nth-child(2){grid-column:span 3}
        .matrix-item:nth-child(3){grid-column:span 3}
        .matrix-item:nth-child(4),.matrix-item:nth-child(5){grid-column:span 4}
        .matrix-num{font-size:12px;color:var(--orange);font-weight:800}
        .matrix h3{font-size:18px;margin:13px 0 8px}
        .matrix p{color:var(--muted);font-size:13px}
        .category-bar{display:flex;flex-wrap:wrap;gap:10px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:12px}
        .category{padding:10px 15px;border:1px solid var(--line);border-radius:100px;color:#5c574f;background:#fff;transition:.25s}
        .category:hover,.category.selected{background:var(--orange);border-color:var(--orange);color:#fff}
        .compare{display:grid;grid-template-columns:1fr 70px 1fr;align-items:stretch;border:1px solid var(--line);background:#fff}
        .compare-side{padding:34px}
        .compare-side:last-child{background:#f7e8da}
        .compare-side h3{font-size:20px;margin-bottom:18px}
        .compare-side ul{list-style:none;color:var(--muted)}
        .compare-side li{padding:10px 0;border-bottom:1px dashed var(--line)}
        .compare-side li:before{content:"—";color:var(--orange);margin-right:9px}
        .versus{display:grid;place-items:center;color:var(--orange);font-weight:900;border-left:1px solid var(--line);border-right:1px solid var(--line)}
        .updates{display:grid;grid-template-columns:1fr 1.1fr;gap:22px}
        .update-panel{padding:28px;background:#fff;border:1px solid var(--line);border-radius:12px}
        .update-date{color:var(--orange);font-size:12px;font-weight:800}
        .update-list{list-style:none;margin-top:12px}
        .update-list li{display:flex;justify-content:space-between;gap:14px;padding:15px 0;border-bottom:1px solid var(--line)}
        .update-list li:last-child{border:0}
        .update-title{font-weight:700}
        .status{font-size:11px;color:var(--green);white-space:nowrap;background:#edf2ea;padding:3px 8px;border-radius:5px;height:max-content}
        .timeline{display:grid;grid-template-columns:repeat(4,1fr);position:relative;margin-top:55px}
        .timeline:before{content:"";position:absolute;top:12px;left:8%;right:8%;height:1px;background:#656a60}
        .step{position:relative;padding:42px 20px 0 0}
        .step-dot{position:absolute;top:4px;width:17px;height:17px;border:4px solid var(--deep);background:var(--orange);border-radius:50%;z-index:1}
        .step-num{font-size:12px;color:#e8a17c;font-weight:800}
        .step h3{font-size:18px;margin:7px 0}
        .step p{color:#c9c6bd;font-size:13px;padding-right:16px}
        .scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
        .scene{min-height:250px;padding:30px;display:flex;flex-direction:column;justify-content:end;border-radius:14px;overflow:hidden;background-size:cover;background-position:center;color:#fff;position:relative}
        .scene:before{content:"";position:absolute;inset:0;background:linear-gradient(transparent,rgba(25,25,22,.78))}
        .scene>*{position:relative}
        .scene:first-child{background-image:url('/assets/images/b94fecf027dbc101.jpg')}
        .scene:last-child{background-image:url('/assets/images/c6ac1528b65b5e3c.jpg')}
        .scene h3{font-size:23px}.scene p{font-size:13px;color:#eee}
        .article-list{border-top:1px solid var(--line)}
        .article{display:grid;grid-template-columns:120px 1fr 100px;gap:20px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line)}
        .article-date{color:var(--orange);font-weight:800;font-size:13px}
        .article h3{font-size:17px}.article p{font-size:13px;color:var(--muted)}
        .article-arrow{text-align:right;color:var(--orange);font-size:24px}
        .assurance{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
        .assure{padding:24px 20px;border:1px solid var(--line);border-radius:12px;background:#fff}
        .assure-icon{width:34px;height:34px;border-radius:50%;background:#f4dfd0;color:var(--orange);display:grid;place-items:center;font-weight:900;margin-bottom:17px}
        .assure h3{font-size:16px;margin-bottom:7px}.assure p{font-size:13px;color:var(--muted)}
        .quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
        .quick{padding:24px;background:#f7eee4;border-left:3px solid var(--orange)}
        .quick h3{font-size:16px;margin-bottom:10px}.quick p{font-size:13px;color:var(--muted)}
        .faq-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:55px}
        .faq-menu p{color:var(--muted);margin-top:14px}
        details{border-top:1px solid var(--line);padding:19px 0}
        details:last-child{border-bottom:1px solid var(--line)}
        summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:20px}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"+";color:var(--orange);font-size:21px;font-weight:400}
        details[open] summary:after{content:"—"}
        details p{padding:12px 35px 3px 0;color:var(--muted);font-size:14px}
        .contact-box{display:grid;grid-template-columns:.85fr 1.15fr;gap:55px;align-items:center;background:var(--orange);color:#fff;padding:60px;border-radius:18px;overflow:hidden}
        .contact-box .kicker{color:#ffe4d4}.contact-box h2{max-width:430px}.contact-box p{color:#ffe9db;margin-top:14px}
        .form{background:#fff;padding:26px;border-radius:12px;color:var(--ink)}
        .form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
        label{font-size:13px;font-weight:700;display:block;margin-bottom:6px}
        input,textarea,select{width:100%;border:1px solid var(--line);background:#fffdf9;border-radius:7px;padding:11px 12px;color:var(--ink);margin-bottom:15px;transition:.2s}
        textarea{min-height:90px;resize:vertical}
        input:focus,textarea:focus,select:focus{border-color:var(--orange);outline:0;box-shadow:0 0 0 3px rgba(230,109,50,.12)}
        .form .btn{width:100%;background:var(--deep);color:#fff}.form .btn:hover{background:#44473f}
        .form-message{font-size:13px;margin-top:10px;min-height:22px}.form-message.error{color:#c94f3f}.form-message.success{color:var(--green)}
        footer{background:#252622;color:#eee;padding:46px 0 25px}
        .footer-main{display:flex;justify-content:space-between;gap:40px;padding-bottom:38px;border-bottom:1px solid #44463f}
        .footer-brand p{color:#aaa99f;font-size:13px;margin-top:12px;max-width:300px}
        .footer-links{display:flex;gap:45px}.footer-links a{color:#c9c6bd;font-size:13px}.footer-links a:hover{color:#f0a172}
        .copyright{display:flex;justify-content:space-between;color:#8d8c84;font-size:12px;padding-top:20px}
        @media (max-width:900px){
            .nav-links{display:none}.menu-toggle{display:block}
            .nav-cta{display:none}
            .stats{grid-template-columns:repeat(2,1fr)}.stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
            .feature-grid{grid-template-columns:1fr 1fr}.feature.large{grid-column:span 2;grid-row:auto;min-height:300px}
            .matrix-item,.matrix-item:first-child,.matrix-item:nth-child(2),.matrix-item:nth-child(3),.matrix-item:nth-child(4),.matrix-item:nth-child(5){grid-column:span 6}
            .assurance,.quick-grid{grid-template-columns:repeat(2,1fr)}
            .contact-box{grid-template-columns:1fr;gap:25px;padding:40px}
        }
        @media (max-width:640px){
            .container{width:min(100% - 32px,var(--container))}
            .topbar{height:68px}.brand{font-size:15px}.brand-mark{width:32px;height:32px}
            section{padding:66px 0}.hero{min-height:690px}.hero-content{padding:72px 0 100px}
            h1{font-size:43px}.hero-copy{font-size:15px}.hero-note{gap:17px;flex-wrap:wrap}
            .section-head{display:block}.section-intro{margin-top:14px}
            .stats{margin:0 -16px}.stat{padding:20px 16px}.stat-num{font-size:28px}
            .feature-grid,.updates,.scene-grid,.faq-layout{grid-template-columns:1fr}
            .feature.large{grid-column:auto}.feature{min-height:170px}
            .matrix{display:block}.matrix-item,.matrix-item:first-child,.matrix-item:nth-child(2),.matrix-item:nth-child(3),.matrix-item:nth-child(4),.matrix-item:nth-child(5){display:block;margin-bottom:14px;min-height:140px}
            .compare{grid-template-columns:1fr}.versus{padding:12px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);border-left:0;border-right:0}
            .timeline{display:block;margin-top:35px}.timeline:before{left:8px;top:10px;bottom:10px;width:1px;height:auto;right:auto}
            .step{padding:0 0 30px 40px}.step-dot{left:0;top:3px}.step p{padding:0}
            .article{grid-template-columns:75px 1fr}.article-arrow{display:none}
            .assurance,.quick-grid{grid-template-columns:1fr}.form-row{grid-template-columns:1fr}
            .footer-main,.copyright{display:block}.footer-links{margin-top:25px;gap:20px;flex-wrap:wrap}
            .copyright span{display:block;margin-top:7px}
        }
        @media (prefers-reduced-motion:reduce){*,html{scroll-behavior:auto!important;transition:none!important}}