/* roulang page: index */
:root{
            --green:#128c73;
            --green-dark:#0b6d5b;
            --orange:#e26a1a;
            --cyan:#2bb8c8;
            --ink:#1a1e22;
            --muted:#5c656c;
            --paper:#fffefb;
            --warm:#f3f1eb;
            --line:#dfe2dc;
            --graphite:#1c2127;
            --shadow:0 12px 30px rgba(27,38,34,.08);
            --radius:15px;
            --container:1240px;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:"Noto Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--warm);line-height:1.75;font-size:16px;overflow-x:hidden}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%;height:auto}
        button,input,select,textarea{font:inherit}
        button{cursor:pointer}
        section{scroll-margin-top:122px}
        .container{width:min(var(--container),calc(100% - 48px));margin:auto}
        .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
        .eyebrow:before{content:"";display:block;width:24px;height:2px;background:var(--orange)}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:34px}
        .section-head h2{font-size:clamp(28px,3vw,43px);line-height:1.2;letter-spacing:-.04em;margin-top:10px}
        .section-head p{max-width:560px;color:var(--muted);line-height:1.8}
        .topbar{height:39px;background:var(--graphite);color:#cbd2d0;font-size:12px}
        .topbar .container{height:100%;display:flex;justify-content:space-between;align-items:center}
        .topbar-right{display:flex;align-items:center;gap:22px}
        .topbar a:hover{color:#fff}
        .topbar .urgent{color:#ffad79}
        .navbar{height:82px;background:rgba(255,254,251,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
        .navbar .container{height:100%;display:flex;align-items:center;gap:34px}
        .brand{display:flex;align-items:center;gap:11px;min-width:250px;font-weight:800;font-size:18px;letter-spacing:-.04em}
        .brand-mark{width:34px;height:34px;border:2px solid var(--green);border-radius:8px;position:relative;display:grid;place-items:center;color:var(--green);font-size:15px}
        .brand-mark:after{content:"";position:absolute;width:8px;height:8px;background:var(--orange);border-radius:50%;right:-5px;top:-5px}
        .nav-links{display:flex;align-items:center;gap:24px;flex:1}
        .nav-links a{font-size:14px;color:var(--muted);padding:28px 0;position:relative;white-space:nowrap}
        .nav-links a:after{content:"";position:absolute;bottom:17px;left:0;width:0;height:3px;background:var(--green);transition:.25s}
        .nav-links a:hover,.nav-links a.active{color:var(--green);font-weight:700}
        .nav-links a:hover:after,.nav-links a.active:after{width:100%}
        .btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;min-height:46px;padding:0 21px;border:1px solid transparent;border-radius:8px;font-weight:700;font-size:14px;transition:.25s;white-space:nowrap}
        .btn-primary{background:var(--green);color:white}
        .btn-primary:hover{background:var(--green-dark);box-shadow:0 0 0 2px rgba(43,184,200,.35)}
        .btn-outline{border-color:#7b8585;color:var(--ink);background:transparent}
        .btn-outline:hover{border-color:var(--green);color:var(--green);box-shadow:0 0 0 2px rgba(43,184,200,.22)}
        .btn-orange{background:var(--orange);color:#fff}
        .btn-orange:hover{background:#bf5310;box-shadow:0 0 0 2px rgba(226,106,26,.24)}
        .menu-toggle{display:none;border:0;background:none;width:46px;height:46px;font-size:25px;color:var(--ink)}
        .hero{height:calc(100vh - 121px);min-height:620px;max-height:820px;position:relative;background:var(--graphite);overflow:hidden}
        .slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .7s ease;display:flex;align-items:center}
        .slide.active{opacity:1;visibility:visible}
        .slide-bg{position:absolute;inset:0;background-size:cover;background-position:center}
        .slide-bg:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,25,29,.94) 0%,rgba(20,25,29,.77) 42%,rgba(20,25,29,.14) 100%)}
        .slide:nth-child(2) .slide-bg:after{background:linear-gradient(90deg,rgba(20,25,29,.93),rgba(20,25,29,.54) 50%,rgba(20,25,29,.22))}
        .slide:nth-child(3) .slide-bg:after{background:linear-gradient(90deg,rgba(20,25,29,.91),rgba(20,25,29,.58) 45%,rgba(20,25,29,.18))}
        .hero-content{position:relative;z-index:1;color:#fff;width:min(650px,100%);padding-bottom:34px}
        .hero-content .eyebrow{color:#8fe1d0}
        .hero h1{font-size:clamp(40px,5.5vw,76px);line-height:1.1;letter-spacing:-.07em;margin:20px 0 23px}
        .hero h1 span{color:#7edbca}
        .hero p{font-size:17px;color:#d7dfdc;max-width:600px;line-height:1.9}
        .hero-actions{display:flex;gap:13px;margin-top:31px}
        .hero .btn-outline{color:#fff;border-color:#aab7b4}
        .hero-specs{display:flex;gap:34px;margin-top:54px;border-top:1px solid rgba(255,255,255,.22);padding-top:19px}
        .hero-specs strong{display:block;color:#8fe1d0;font-size:25px;font-family:ui-monospace,monospace}
        .hero-specs small{color:#c7d0cc;font-size:12px}
        .hero-controls{position:absolute;z-index:3;bottom:38px;right:max(24px,calc((100% - var(--container))/2));display:flex;align-items:center;gap:11px}
        .arrow,.dot{border:1px solid rgba(255,255,255,.45);background:rgba(20,25,29,.4);color:#fff;width:42px;height:42px;border-radius:50%;display:grid;place-items:center}
        .arrow:hover,.dot.active{background:var(--green);border-color:var(--green)}
        .dot{width:9px;height:9px;padding:0;border:0;background:#9da8a5}
        .progress{position:absolute;bottom:0;left:0;height:3px;background:var(--cyan);width:33.33%;z-index:4;transition:left .5s}
        .intro{padding:94px 0;background:var(--paper)}
        .intro-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:76px;align-items:center}
        .photo-frame{position:relative;padding:0 0 22px 22px}
        .photo-frame:before{content:"";position:absolute;left:0;bottom:0;width:75%;height:78%;border:1px solid var(--green);z-index:0}
        .photo-frame img{position:relative;z-index:1;width:100%;height:430px;object-fit:cover;border-radius:12px}
        .tech-note{position:absolute;z-index:2;bottom:0;right:-22px;background:var(--graphite);color:#fff;border-left:4px solid var(--orange);padding:17px 20px;width:245px;font-size:13px}
        .intro-copy h2{font-size:39px;line-height:1.25;letter-spacing:-.05em;margin:12px 0 20px}
        .intro-copy>p{color:var(--muted);line-height:1.95;margin-bottom:22px}
        .fact-list{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}
        .fact-list div{padding:15px 16px 12px 0;border-bottom:1px solid var(--line)}
        .fact-list strong{display:block;color:var(--green);font-size:22px;font-family:ui-monospace,monospace}
        .fact-list span{font-size:13px;color:var(--muted)}
        .service{padding:92px 0}
        .service-layout{display:grid;grid-template-columns:1fr 1.05fr;gap:28px;align-items:stretch}
        .service-list{display:grid;grid-template-columns:1fr 1fr;gap:13px}
        .service-item{background:var(--paper);border:1px solid var(--line);border-top:3px solid var(--green);border-radius:12px;padding:21px;transition:.25s}
        .service-item:hover{transform:translateY(-4px);border-color:var(--green);box-shadow:var(--shadow)}
        .service-item h3{font-size:18px;margin-bottom:9px}
        .service-item ul{list-style:none;color:var(--muted);font-size:13px;line-height:1.9}
        .service-item li:before{content:"—";color:var(--cyan);margin-right:7px}
        .service-item a{display:inline-block;color:var(--green);font-weight:700;font-size:13px;margin-top:11px}
        .service-visual{position:relative;min-height:530px;border-radius:14px;overflow:hidden}
        .service-visual img{width:100%;height:100%;object-fit:cover}
        .visual-caption{position:absolute;left:22px;bottom:22px;right:22px;background:rgba(28,33,39,.89);color:white;padding:19px;border-left:3px solid var(--cyan)}
        .visual-caption strong{display:block;font-size:20px}.visual-caption span{color:#cad3d0;font-size:13px}
        .advantages{padding:88px 0;background:#eae9e2}
        .adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
        .adv-card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:26px;min-height:190px;transition:.25s}
        .adv-card:hover{transform:translateY(-4px);border-color:var(--green);box-shadow:var(--shadow)}
        .line-icon{width:42px;height:42px;border:1.5px solid var(--cyan);border-radius:10px;color:var(--cyan);display:grid;place-items:center;font-weight:800;margin-bottom:17px}
        .adv-card h3{font-size:17px;margin-bottom:10px}.adv-card p{color:var(--muted);font-size:14px;line-height:1.8}
        .projects{padding:94px 0;background:var(--paper)}
        .project-grid{display:grid;grid-template-columns:1.3fr .85fr .85fr;gap:18px}
        .project-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--warm);transition:.25s}
        .project-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--green)}
        .project-card:first-child{grid-row:span 2}
        .project-card img{width:100%;height:205px;object-fit:cover}.project-card:first-child img{height:300px}
        .project-body{padding:21px}.project-body h3{font-size:20px;margin-bottom:10px}.project-body p{color:var(--muted);font-size:14px;line-height:1.8}.project-body a{display:inline-block;margin-top:14px;color:var(--green);font-weight:700;font-size:13px}
        .stats{background:var(--green);color:#fff;padding:38px 0}
        .stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
        .stat{padding:5px 28px;border-right:1px solid rgba(255,255,255,.28)}.stat:first-child{padding-left:0}.stat:last-child{border:0}
        .stat strong{font-family:ui-monospace,monospace;font-size:40px;letter-spacing:-.05em}.stat strong i{font-style:normal;font-size:18px;margin-left:4px}.stat span{display:block;color:#cce9e1;font-size:13px}
        .process{padding:92px 0}.process-track{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative;margin-top:50px}
        .process-track:before{content:"";position:absolute;top:18px;left:7%;right:7%;height:1px;background:#b5ccc5}
        .step{position:relative;text-align:center;padding:0 12px}.step-num{margin:auto;width:37px;height:37px;border-radius:50%;display:grid;place-items:center;background:var(--paper);border:2px solid var(--green);color:var(--green);font-weight:800;position:relative;z-index:1}.step h3{font-size:16px;margin:19px 0 8px}.step p{font-size:13px;color:var(--muted);line-height:1.75}
        .craft{padding:94px 0;background:var(--graphite);color:#fff;position:relative;overflow:hidden}.craft:after{content:"";position:absolute;right:-120px;top:-160px;width:500px;height:500px;border:1px solid rgba(43,184,200,.25);transform:rotate(45deg)}
        .craft-grid{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:center;position:relative;z-index:1}.craft h2{font-size:clamp(30px,4vw,52px);line-height:1.25;letter-spacing:-.06em;margin:15px 0 23px}.craft blockquote{font-size:20px;line-height:1.8;color:#dce8e4;border-left:3px solid var(--orange);padding-left:20px}.craft p{color:#aebbb7;margin-top:20px}
        .craft-images{display:grid;grid-template-columns:1fr 1fr;gap:13px}.craft-images img{width:100%;height:280px;object-fit:cover;border-radius:10px}.craft-images img+img{margin-top:38px}
        .cases{padding:92px 0;background:var(--warm)}.case-wall{display:grid;grid-template-columns:1.05fr .8fr 1fr;grid-template-rows:220px 220px;gap:15px}.case{position:relative;overflow:hidden;border-radius:13px;color:#fff;background:var(--graphite)}.case:first-child{grid-row:span 2}.case:nth-child(4){grid-column:2 / span 2}.case img{width:100%;height:100%;object-fit:cover;opacity:.72;transition:.3s}.case:hover img{transform:scale(1.04);opacity:.5}.case-info{position:absolute;left:20px;bottom:18px;right:17px}.case-info small{color:#9be5d6}.case-info h3{font-size:17px}.case-info p{font-size:12px;color:#e1e8e5}
        .scenes{padding:92px 0;background:var(--paper)}.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.scene{display:grid;grid-template-columns:190px 1fr;gap:22px;align-items:center;border-bottom:1px solid var(--line);padding:0 0 22px}.scene img{width:190px;height:145px;object-fit:cover;border-radius:11px}.scene h3{font-size:18px;margin-bottom:8px}.scene p{font-size:14px;color:var(--muted);line-height:1.8}
        .reviews{padding:88px 0;background:#eae9e2}.review-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.review{background:var(--paper);border-left:4px solid var(--green);padding:24px;border-radius:0 12px 12px 0}.stars{color:var(--orange);letter-spacing:2px}.review blockquote{font-size:14px;line-height:1.9;margin:15px 0;color:#384148}.review footer{font-size:12px;color:var(--muted)}
        .news{padding:92px 0;background:var(--paper)}.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.news-card{border:1px solid var(--line);border-radius:13px;overflow:hidden;background:var(--paper);transition:.25s}.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.news-card img{width:100%;height:175px;object-fit:cover}.news-card div{padding:18px}.news-card time{color:var(--orange);font-size:12px}.news-card h3{font-size:17px;line-height:1.5;margin:8px 0}.news-card p{font-size:13px;color:var(--muted)}
        .partners{padding:54px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--warm)}.partner-row{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}.partner-row span{padding:12px 21px;border:1px solid #cdd3cf;color:#68736f;font-size:13px;border-radius:6px;background:#f8f7f1}
        .faq{padding:91px 0;background:var(--paper)}.faq-list{max-width:900px;margin:auto;border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-q{width:100%;min-height:62px;border:0;background:transparent;text-align:left;display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:16px;color:var(--ink);padding:0 12px}.faq-q:after{content:"+";font-size:24px;color:var(--green);font-weight:400}.faq-item.open .faq-q{color:var(--green)}.faq-item.open .faq-q:after{content:"−"}.faq-a{max-height:0;overflow:hidden;color:var(--muted);font-size:14px;line-height:1.9;padding:0 12px;transition:max-height .3s ease}.faq-item.open .faq-a{max-height:180px;padding:0 12px 19px}
        .guarantees{padding:32px 0;background:#e5e5dd}.guarantee-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:15px}.guarantee{display:flex;gap:10px;align-items:center}.guarantee b{color:var(--green);font-size:20px}.guarantee span{font-size:13px;color:var(--muted);line-height:1.45}
        .contact{padding:94px 0;background:var(--warm)}.contact-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:55px}.contact h2{font-size:39px;line-height:1.3;margin:13px 0 15px;letter-spacing:-.05em}.contact-intro{color:var(--muted);margin-bottom:25px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field input,.field select,.field textarea{border:1px solid #ccd3ce;background:var(--paper);border-radius:7px;padding:0 13px;height:48px;outline:none;color:var(--ink);transition:.2s}.field textarea{height:95px;padding-top:12px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(43,184,200,.15)}.form-message{font-size:13px;color:var(--green);margin-top:12px;min-height:22px}.contact-info{background:var(--graphite);color:#fff;padding:30px;border-radius:14px;position:relative;overflow:hidden}.contact-info:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent 45%,rgba(43,184,200,.13));pointer-events:none}.contact-info h3{font-size:22px;margin-bottom:21px;position:relative}.info-row{position:relative;display:flex;gap:14px;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.13)}.info-row b{color:#8fe1d0;min-width:65px;font-size:13px}.info-row span,.info-row a{color:#d0dad6;font-size:14px}.map-box{height:165px;margin-top:22px;border-radius:9px;overflow:hidden;position:relative;background:url('/assets/images/396f05fbcbc6dad8.webp') center/cover}.map-box:after{content:"工场位置 · 杭州余杭";position:absolute;inset:0;display:grid;place-items:center;background:rgba(28,33,39,.58);color:#fff;font-weight:700}
        .safety-note{margin-top:24px;border-left:3px solid var(--orange);padding:11px 14px;background:rgba(226,106,26,.08);color:#8c461e;font-size:13px}
        footer{background:#15191d;color:#b9c2be;padding:58px 0 25px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:38px}.footer-brand{color:#fff;font-size:20px;font-weight:800;margin-bottom:14px}.footer h3{color:#fff;font-size:15px;margin-bottom:16px}.footer p,.footer a{font-size:13px;line-height:2;color:#aab5b1}.footer a{display:block}.footer a:hover{color:#8fe1d0}.footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:37px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;font-size:12px;color:#84908c}
        @media (max-width:1280px){.nav-links{gap:15px}.brand{min-width:220px}.hero-content{padding-left:0}.container{width:min(1120px,calc(100% - 42px))}}
        @media (max-width:1024px){.nav-links{gap:11px}.nav-links a{font-size:13px}.brand{min-width:205px;font-size:16px}.navbar .btn{padding:0 13px;font-size:12px}.intro-grid,.craft-grid,.contact-grid{gap:38px}.hero-content{width:58%}.adv-grid{gap:12px}.review-grid{grid-template-columns:repeat(2,1fr)}}
        @media (max-width:768px){section{scroll-margin-top:70px}.topbar{height:34px}.topbar .container{justify-content:center}.topbar-left{display:none}.topbar-right{gap:14px}.topbar-right span:nth-child(2){display:none}.navbar{height:68px}.navbar .container{gap:12px}.brand{flex:1;min-width:0}.brand-mark{width:31px;height:31px}.brand-name{font-size:15px}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);padding:10px 24px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}.nav-links.open{display:flex}.nav-links a{padding:13px 4px;border-bottom:1px solid var(--line)}.nav-links a:after{bottom:0}.navbar>.container>.btn{display:none}.menu-toggle{display:block}.hero{height:70vh;min-height:560px}.hero-content{width:76%}.hero h1{font-size:49px}.hero-specs{margin-top:34px;gap:18px}.intro,.service,.advantages,.projects,.process,.craft,.cases,.scenes,.reviews,.news,.faq,.contact{padding:64px 0}.section-head{display:block;margin-bottom:27px}.section-head p{margin-top:15px}.intro-grid,.service-layout,.craft-grid,.contact-grid{grid-template-columns:1fr}.intro-copy{order:1}.photo-frame img{height:330px}.service-visual{min-height:380px}.adv-grid{grid-template-columns:1fr 1fr}.project-grid{grid-template-columns:1fr}.project-card:first-child{grid-row:auto}.project-card img,.project-card:first-child img{height:220px}.stat-grid{grid-template-columns:repeat(2,1fr);gap:22px}.stat{border:0;padding:5px 0}.process-track{grid-template-columns:1fr;gap:25px;margin-top:25px}.process-track:before{left:18px;top:18px;bottom:18px;width:1px;height:auto;right:auto}.step{text-align:left;padding-left:62px}.step-num{position:absolute;left:0;top:0}.craft-images img{height:220px}.case-wall{grid-template-columns:1fr 1fr;grid-template-rows:200px 200px 200px}.case:first-child{grid-row:auto;grid-column:span 2}.case:nth-child(4){grid-column:auto}.scene-grid,.news-grid{grid-template-columns:1fr}.guarantee-grid{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1fr 1fr}}
        @media (max-width:520px){.container{width:calc(100% - 32px)}.topbar-right{font-size:11px}.hero{height:68vh;min-height:520px}.slide-bg:after{background:linear-gradient(90deg,rgba(20,25,29,.93),rgba(20,25,29,.55))!important}.hero-content{width:100%;padding-bottom:45px}.hero h1{font-size:39px}.hero p{font-size:14px;line-height:1.8}.hero-actions{flex-wrap:wrap;margin-top:23px}.hero-specs{margin-top:28px}.hero-specs strong{font-size:20px}.hero-controls{bottom:22px;right:16px}.intro-copy h2,.contact h2{font-size:30px}.photo-frame{padding-left:10px}.photo-frame img{height:260px}.tech-note{right:-3px;font-size:11px;width:205px;padding:12px}.service-list,.adv-grid{grid-template-columns:1fr}.service-item{padding:18px}.craft-images{gap:8px}.craft-images img{height:170px}.case-wall{grid-template-columns:1fr;grid-template-rows:repeat(4,200px)}.case:first-child{grid-column:auto}.scene{grid-template-columns:110px 1fr;gap:13px}.scene img{width:110px;height:105px}.scene h3{font-size:15px}.scene p{font-size:12px}.review-grid{grid-template-columns:1fr}.news-card img{height:155px}.guarantee-grid{grid-template-columns:1fr 1fr;gap:18px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.contact-info{padding:22px}.footer-grid{grid-template-columns:1fr;gap:25px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}
        @media (max-width:375px){body{font-size:15px}.brand-name{font-size:14px}.hero h1{font-size:35px}.hero-specs{gap:12px}.hero-specs small{font-size:10px}.btn{padding:0 16px}.section-head h2{font-size:27px}}
        :focus-visible{outline:3px solid var(--cyan);outline-offset:3px}