/* roulang page: index */
:root{
  --ink:#1e262b;--night:#12171a;--amber:#c8893a;--amber-dark:#a86d28;
  --paper:#f4f1ea;--stone:#e7e2d8;--white:#fffdf8;--muted:#687176;
  --line:#d9d3c8;--green:#3f6f5b;--danger:#9a5b43;--radius:9px;
  --shadow:0 8px 24px rgba(30,38,43,.07);--container:1220px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;max-width:100%;object-fit:cover}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
.section{padding:104px 0;position:relative}
.section.stone{background:var(--stone)}
.section.paper{background:var(--paper)}
.section-head{max-width:720px;margin-bottom:42px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--amber-dark);font-size:13px;letter-spacing:.13em;font-weight:700;margin-bottom:13px}
.eyebrow:before{content:"";width:24px;height:2px;background:var(--amber)}
h1,h2,h3{line-height:1.28;letter-spacing:-.035em}
h1{font-size:clamp(34px,4.4vw,56px);font-weight:750}
h2{font-size:clamp(27px,3vw,36px);font-weight:730}
h3{font-size:20px;font-weight:700}
.section-head h2:after{content:"";display:block;width:42px;height:3px;background:var(--amber);margin-top:16px}
.section-head p{color:var(--muted);margin-top:16px;max-width:680px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:47px;padding:0 21px;border:1px solid var(--ink);border-radius:5px;font-weight:700;transition:.25s ease}
.btn.primary{background:var(--ink);color:var(--white)}
.btn.primary:hover,.btn.primary:focus{background:var(--amber);border-color:var(--amber);color:#fff}
.btn.outline{background:transparent;color:var(--ink)}
.btn.outline:hover,.btn.outline:focus{background:var(--ink);color:#fff}
.btn.light{border-color:#f6f1e8;color:#f6f1e8}
.btn.light:hover{background:var(--amber);border-color:var(--amber)}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--amber);outline-offset:3px}
.topbar{height:35px;background:#dcd7cd;color:#596267;font-size:12px}
.topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between;gap:18px}
.topbar-right{display:flex;gap:22px}
.site-header{position:relative;z-index:20}
.mainbar{height:76px;background:rgba(244,241,234,.97);border-bottom:1px solid var(--line)}
.mainbar .container{height:100%;display:flex;align-items:center;gap:28px}
.logo{font-size:21px;font-weight:800;letter-spacing:-.05em;white-space:nowrap}
.logo i{display:inline-block;width:8px;height:8px;background:var(--amber);border-radius:50%;margin:0 7px 3px 0}
.nav-links{display:flex;align-items:center;justify-content:center;gap:23px;flex:1}
.nav-links a{font-size:14px;color:#4f595d;position:relative;white-space:nowrap}
.nav-links a:after{content:"";position:absolute;bottom:-8px;left:0;width:0;height:2px;background:var(--amber);transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-links a:hover:after,.nav-links a.active:after{width:100%}
.nav-cta{font-size:13px;min-height:42px;padding:0 15px;white-space:nowrap}
.menu-toggle{display:none;background:none;font-size:26px;color:var(--ink);width:44px;height:44px}
.hero{min-height:680px;position:relative;background:var(--night);color:#fff;overflow:hidden}
.hero-slides{height:680px;position:relative}
.hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;visibility:hidden;transition:opacity .6s ease}
.hero-slide:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,23,26,.9) 0%,rgba(18,23,26,.66) 44%,rgba(18,23,26,.16) 100%)}
.hero-slide.active{opacity:1;visibility:visible}
.hero-content{position:relative;z-index:1;padding-top:145px;max-width:690px}
.hero h1{max-width:650px}
.hero h1 span{color:#e6b16c}
.hero-copy{font-size:17px;line-height:1.9;color:#eee9df;max-width:630px;margin:24px 0 30px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-note{display:flex;gap:26px;flex-wrap:wrap;margin-top:47px;color:#ddd6ca;font-size:13px}
.hero-note strong{display:block;color:#fff;font-size:22px;line-height:1.2}
.hero-controls{position:absolute;z-index:3;bottom:40px;right:max(24px,calc((100% - var(--container))/2));display:flex;align-items:center;gap:14px}
.hero-arrow{width:40px;height:40px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.42);color:#fff;border-radius:4px;font-size:20px}
.hero-arrow:hover{background:var(--amber);border-color:var(--amber)}
.dots{display:flex;gap:8px}
.dot{width:28px;height:3px;background:rgba(255,255,255,.4);transition:.2s}
.dot.active{background:var(--amber);width:46px}
.hero-ruler{position:absolute;bottom:42px;left:max(24px,calc((100% - var(--container))/2));color:#cfc8bc;font-size:11px;letter-spacing:.16em}
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:68px;align-items:center}
.intro-image{height:430px;border-radius:var(--radius);overflow:hidden;position:relative}
.intro-image img{height:100%}
.intro-image:after{content:"企业用车 / SERVICE DESK";position:absolute;bottom:18px;left:20px;color:#fff;font-size:11px;letter-spacing:.12em}
.intro-copy p{color:var(--muted);margin:20px 0}
.check-list{list-style:none;display:grid;gap:11px;margin-top:23px}
.check-list li{display:flex;gap:11px;align-items:flex-start}
.check-list b{color:var(--green);font-size:19px;line-height:1.5}
.proof{margin-top:25px;padding:17px 19px;background:var(--white);border-left:3px solid var(--amber);font-size:14px}
.proof strong{display:block;font-size:21px;line-height:1.3}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.feature-card{background:var(--paper);padding:30px 28px;min-height:220px;transition:.25s}
.feature-card:hover{background:var(--white);transform:translateY(-2px);box-shadow:0 8px 20px rgba(30,38,43,.06);border-bottom:2px solid var(--amber)}
.line-icon{height:36px;width:36px;color:var(--amber);margin-bottom:20px}
.feature-card p{color:var(--muted);font-size:14px;margin:10px 0 17px;line-height:1.7}
.metric{font-size:13px;color:var(--green);font-weight:700}
.plans-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.plan-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.plan-img{height:218px;position:relative}
.plan-img img{height:100%}
.plan-img span{position:absolute;left:18px;bottom:16px;background:var(--ink);color:#fff;padding:3px 9px;font-size:12px}
.plan-body{padding:24px}
.plan-body p{color:var(--muted);font-size:14px;margin:10px 0 17px}
.plan-meta{font-size:13px;border-top:1px solid var(--line);padding-top:14px;line-height:1.8}
.plan-body .btn{margin-top:20px;font-size:13px;min-height:40px}
.fleet-wrap{border:1px solid var(--line);background:var(--white);overflow:auto}
.fleet-table{width:100%;border-collapse:collapse;min-width:700px}
.fleet-table th,.fleet-table td{text-align:left;padding:18px 20px;border-bottom:1px solid var(--line);font-size:14px}
.fleet-table th{background:#ded9cf;color:#4d575b;font-size:13px}
.fleet-table tr:last-child td{border-bottom:0}
.fleet-table td:first-child{font-weight:700}
.fleet-tag{color:var(--green);font-size:12px;font-weight:700}
.scene-rail{display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.scene-item{padding:26px 17px 29px;border-right:1px solid var(--line);position:relative}
.scene-item:last-child{border-right:0}
.scene-item:before{content:"";position:absolute;top:-5px;left:17px;width:9px;height:9px;background:var(--amber);border-radius:50%;border:2px solid var(--paper)}
.scene-no{color:var(--amber-dark);font-size:12px;letter-spacing:.1em}
.scene-item h3{font-size:17px;margin:18px 0 12px}
.scene-item p{font-size:13px;color:var(--muted);line-height:1.7}
.scene-item strong{display:block;font-size:12px;color:var(--ink);margin-top:15px}
.demo{background:#ded9cf}
.demo-board{display:grid;grid-template-columns:1.2fr .8fr;gap:34px;align-items:center}
.device{background:var(--night);border:9px solid #2e373b;border-radius:14px;padding:24px;box-shadow:0 12px 28px rgba(18,23,26,.14)}
.device-top{display:flex;justify-content:space-between;color:#d8d1c6;font-size:12px;border-bottom:1px solid #465055;padding-bottom:16px}
.route-line{height:170px;margin:20px 0;position:relative;background:linear-gradient(155deg,transparent 47%,#56645f 48%,#56645f 50%,transparent 51%),linear-gradient(25deg,transparent 48%,#394348 49%,#394348 51%,transparent 52%);border:1px solid #374247}
.route-line i{position:absolute;width:12px;height:12px;background:var(--amber);border-radius:50%;box-shadow:0 0 0 5px rgba(200,137,58,.18)}
.route-line i:first-child{left:17%;top:65%}.route-line i:last-child{right:18%;top:24%}
.device-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.device-stats div{background:#252e32;padding:12px;color:#d9d3c8;font-size:11px}
.device-stats b{display:block;color:#fff;font-size:17px}
.steps{display:grid;gap:18px}
.step{display:grid;grid-template-columns:40px 1fr;gap:15px}
.step-number{width:34px;height:34px;border:1px solid var(--amber);color:var(--amber-dark);display:grid;place-items:center;font-weight:700}
.step p{color:var(--muted);font-size:14px;margin-top:4px}
.cases{background:var(--night);color:#f6f1e8}
.cases .section-head p{color:#abb1b0}
.case-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}
.case-quote{font-size:28px;line-height:1.5;border-left:3px solid var(--amber);padding-left:24px}
.case-quote small{display:block;color:#aeb5b2;font-size:13px;margin-top:23px}
.case-list{display:grid;gap:16px}
.case-row{border-top:1px solid #485054;padding:18px 0;display:grid;grid-template-columns:155px 1fr;gap:20px}
.case-row h3{font-size:17px;color:#f6f1e8}
.case-row p{font-size:14px;color:#c0c3bd}
.case-result{color:#e5ad67;font-weight:700;margin-top:5px}
.stories{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.story{background:var(--white);border:1px solid var(--line);padding:30px;position:relative}
.story:before{content:"“";font-family:Georgia;font-size:72px;color:#d6c4aa;position:absolute;right:23px;top:4px}
.story-role{display:flex;align-items:center;gap:13px;margin-bottom:18px}
.avatar{width:43px;height:43px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:700}
.story p{font-size:15px;color:#515c60}
.story em{display:block;font-style:normal;color:var(--green);font-size:13px;margin-top:17px}
.stats-bar{background:var(--ink);color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(5,1fr)}
.stat{padding:10px 22px;border-right:1px solid #445054}
.stat:last-child{border-right:0}
.stat b{font-size:32px;color:#e5ad67;display:block;line-height:1.3}
.stat span{font-size:12px;color:#d0d2cb}
.price-table{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start}
.price-card{background:var(--white);border:1px solid var(--line);padding:28px 25px;border-radius:var(--radius)}
.price-card.featured{border:2px solid var(--amber);margin-top:-12px;box-shadow:var(--shadow)}
.price-label{font-size:12px;color:var(--amber-dark);font-weight:700}
.price-card h3{margin:10px 0}
.price{font-size:27px;font-weight:800;margin-bottom:18px}
.price small{font-size:13px;color:var(--muted);font-weight:400}
.price-card ul{list-style:none;border-top:1px solid var(--line);padding-top:14px}
.price-card li{font-size:13px;color:#5d676a;padding:7px 0;border-bottom:1px dotted var(--line)}
.price-card .btn{width:100%;margin-top:21px;font-size:13px}
.reviews{columns:4 220px;column-gap:16px}
.review-tile{display:inline-block;width:100%;background:var(--white);border:1px solid var(--line);padding:19px;margin:0 0 16px;break-inside:avoid}
.review-tile:nth-child(2n){padding-bottom:30px}
.review-tile p{font-size:14px;line-height:1.7}
.review-tile footer{color:var(--amber-dark);font-size:12px;margin-top:12px}
.testimonials{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testimonial{padding:28px;background:#e0dbd1;border-top:3px solid var(--ink)}
.testimonial blockquote{font-size:16px;line-height:1.85}
.testimonial cite{display:block;font-style:normal;font-size:13px;color:var(--muted);margin-top:20px}
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.news-card{background:var(--white);border:1px solid var(--line);overflow:hidden;transition:.2s}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.news-card img{height:145px}
.news-body{padding:18px}
.news-type{font-size:11px;color:var(--amber-dark);font-weight:700}
.news-body h3{font-size:17px;margin:8px 0}
.news-body p{font-size:13px;color:var(--muted);line-height:1.7}
.news-more{margin-top:25px;text-align:right}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;padding:21px 8px;cursor:pointer;font-weight:700;display:flex;justify-content:space-between;gap:15px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";font-size:25px;font-weight:400;line-height:1;transition:.2s}
.faq-item[open] summary:after{transform:rotate(45deg);color:var(--amber)}
.faq-answer{background:var(--stone);padding:0 45px 21px 18px;color:var(--muted);font-size:14px}
.cta-section{background:var(--amber);color:#fff;padding:95px 0}
.cta-grid{display:grid;grid-template-columns:.83fr 1.17fr;gap:70px;align-items:start}
.cta-section .eyebrow{color:#fff4e7}.cta-section .eyebrow:before{background:#fff}
.cta-section h2{font-size:38px}
.cta-section p{color:#fff3e5;margin-top:17px}
.open-steps{list-style:none;margin-top:34px;display:grid;gap:17px}
.open-steps li{display:flex;gap:14px;align-items:center}
.open-steps b{width:30px;height:30px;background:var(--ink);display:grid;place-items:center;border-radius:50%;font-size:13px}
.form-box{background:var(--white);color:var(--ink);padding:28px;border-radius:var(--radius)}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}
.field{display:grid;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:700}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);background:#fff;padding:10px 12px;border-radius:4px;min-height:46px;color:var(--ink)}
.field textarea{height:82px;resize:vertical}
.checkbox-group{display:flex;flex-wrap:wrap;gap:10px}
.checkbox-group label{font-weight:400;border:1px solid var(--line);padding:7px 10px;font-size:12px;cursor:pointer}
.checkbox-group input{accent-color:var(--amber);min-height:auto;width:auto;margin-right:4px}
.form-box .btn{width:100%;margin-top:18px}
.form-note{font-size:12px;color:var(--muted);margin-top:10px}
.form-message{font-size:13px;color:var(--green);margin-top:8px;min-height:20px}
.site-footer{background:var(--night);color:#f0ebe2;padding:65px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.1fr 1fr;gap:45px;padding-bottom:45px}
.footer-brand p{color:#aeb6b4;font-size:13px;margin-top:14px;max-width:270px}
.site-footer h3{font-size:15px;margin-bottom:15px;color:#fff}
.footer-links{display:grid;gap:8px}
.footer-links a,.contact-list li{font-size:13px;color:#adb5b3}
.footer-links a:hover{color:#e4ad68}
.contact-list{list-style:none;display:grid;gap:7px}
.footer-bottom{border-top:1px solid #394247;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#8f9998;font-size:12px;flex-wrap:wrap}
@media(max-width:1200px){
  .nav-links{gap:14px}.nav-cta{padding:0 11px}.scene-rail{grid-template-columns:repeat(3,1fr)}
  .scene-item:nth-child(3){border-right:0}.scene-item:nth-child(n+4){border-top:1px solid var(--line)}
}
@media(max-width:992px){
  .section{padding:82px 0}.intro-grid,.demo-board,.case-grid,.cta-grid{grid-template-columns:1fr;gap:34px}
  .nav-links{gap:10px}.nav-links a{font-size:13px}.mainbar .container{gap:13px}
  .plans-grid,.testimonials{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}.stats-grid{grid-template-columns:repeat(3,1fr)}
  .stat:nth-child(3){border-right:0}.stat:nth-child(n+4){border-top:1px solid #445054}
}
@media(max-width:768px){
  .container{width:min(100% - 32px,var(--container))}.topbar{display:none}.mainbar{height:68px;position:sticky;top:0}
  .mainbar .container{justify-content:space-between}.nav-links{position:absolute;top:68px;left:0;right:0;background:var(--paper);display:none;flex-direction:column;align-items:stretch;padding:10px 22px 22px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .nav-links.open{display:flex}.nav-links a{padding:11px 0;font-size:15px;border-bottom:1px solid var(--line)}
  .nav-links a:after{display:none}.nav-cta{display:none}.nav-links .mobile-cta{display:flex;margin-top:15px}
  .menu-toggle{display:block}.hero,.hero-slides{min-height:640px;height:640px}.hero-content{padding-top:105px}.hero-copy{font-size:15px}
  .hero-controls{bottom:26px;right:16px}.hero-ruler{left:16px;bottom:31px}.intro-image{height:300px}
  .feature-grid{grid-template-columns:1fr}.plans-grid,.price-table,.stories,.testimonials{grid-template-columns:1fr}
  .price-card.featured{margin-top:0}.scene-rail{grid-template-columns:repeat(2,1fr)}
  .scene-item:nth-child(2n){border-right:0}.scene-item:nth-child(3){border-right:1px solid var(--line)}
  .news-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr);gap:30px}
  .cta-section h2{font-size:30px}
}
@media(max-width:520px){
  .section{padding:65px 0}.section-head{margin-bottom:28px}.hero h1{font-size:32px}.hero-copy{line-height:1.75}
  .hero-note{gap:17px;margin-top:30px}.hero-note strong{font-size:19px}.scene-rail{grid-template-columns:1fr}
  .scene-item,.scene-item:nth-child(3){border-right:0;border-bottom:1px solid var(--line)}.scene-item:last-child{border-bottom:0}
  .news-grid,.stats-grid,.form-grid{grid-template-columns:1fr}.stat{border-right:0;border-bottom:1px solid #445054;padding:14px 10px}
  .stat:last-child{border-bottom:0}.device{padding:15px 12px}.device-stats{grid-template-columns:1fr}
  .case-row{grid-template-columns:1fr;gap:4px}.footer-grid{grid-template-columns:1fr}
  .form-box{padding:20px}.field.full{grid-column:auto}.form-grid{gap:12px}
  .hero-actions .btn{width:100%}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
}
@media(max-width:375px){.container{width:calc(100% - 28px)}h2{font-size:24px}.hero-content{padding-top:88px}.logo{font-size:19px}}

/* roulang page: index */
:root{
            --ink:#1c2429;
            --ink-deep:#12171a;
            --copper:#c45c26;
            --copper-dark:#a9491c;
            --moss:#3d5c4a;
            --paper:#f4f0e8;
            --card:#fffdf8;
            --line:#e4d9cc;
            --muted:#6d716f;
            --cream:#ede6da;
            --shadow:0 8px 24px rgba(28,36,41,.08);
            --shadow-lg:0 18px 42px rgba(28,36,41,.13);
            --radius:8px;
            --container:1240px;
            --ease:all .25s ease;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;scroll-padding-top:116px}
        body{
            background:var(--paper);
            color:var(--ink);
            font-family:"Noto Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
            font-size:16px;
            line-height:1.8;
            -webkit-font-smoothing:antialiased;
        }
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%;height:auto}
        button,input,select,textarea{font:inherit}
        button{cursor:pointer}
        ul{list-style:none}
        .container{width:min(var(--container),calc(100% - 48px));margin-inline:auto}
        .topbar{height:40px;background:var(--ink-deep);color:#c8c4bc;font-size:13px}
        .topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
        .topbar-left,.topbar-right{display:flex;align-items:center;gap:22px}
        .topbar a{transition:var(--ease)}
        .topbar a:hover{color:#fff}
        .topbar strong{color:#fff;font-weight:600}
        .main-nav{
            height:76px;
            background:rgba(255,253,248,.96);
            border-bottom:1px solid var(--line);
            position:relative;
            z-index:20;
            transition:var(--ease);
        }
        .main-nav.is-sticky{position:sticky;top:0;box-shadow:0 4px 18px rgba(28,36,41,.08)}
        .nav-inner{height:100%;display:flex;align-items:center;gap:34px}
        .logo{display:flex;align-items:center;gap:10px;min-width:208px;font-weight:800;letter-spacing:.02em}
        .logo-mark{width:34px;height:34px;border:2px solid var(--copper);position:relative;display:grid;place-items:center}
        .logo-mark:before,.logo-mark:after{content:"";position:absolute;background:var(--copper)}
        .logo-mark:before{width:18px;height:2px;top:9px}
        .logo-mark:after{width:12px;height:2px;bottom:9px;right:6px}
        .logo-text{font-size:18px}.logo-text em{font-style:normal;color:var(--copper)}
        .nav-links{display:flex;align-items:center;gap:24px;flex:1;justify-content:center}
        .nav-links a{font-size:14px;color:#4f5554;position:relative;padding:25px 0;white-space:nowrap;transition:var(--ease)}
        .nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:17px;height:2px;background:var(--copper);transition:var(--ease)}
        .nav-links a:hover,.nav-links a.active{color:var(--copper)}
        .nav-links a:hover:after,.nav-links a.active:after{right:0}
        .nav-cta{white-space:nowrap}
        .menu-toggle{display:none;background:none;border:0;width:46px;height:46px;color:var(--ink);font-size:25px}
        .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:5px;padding:11px 20px;font-weight:700;font-size:14px;line-height:1.4;transition:var(--ease)}
        .btn-primary{background:var(--copper);color:#fff}
        .btn-primary:hover{background:var(--copper-dark);transform:translateY(-2px)}
        .btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
        .btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
        .btn-light{border-color:#b9b1a6;color:var(--cream);background:transparent}
        .btn-light:hover{border-color:var(--copper);color:#fff;background:var(--copper)}
        .btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--copper);outline-offset:3px}
        .hero{min-height:610px;position:relative;color:#fff;overflow:hidden;background:var(--ink-deep)}
        .hero-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .5s ease}
        .hero-slide.active{opacity:1;visibility:visible}
        .hero-slide img{width:100%;height:100%;object-fit:cover}
        .hero-slide:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,23,26,.9) 0%,rgba(18,23,26,.68) 45%,rgba(18,23,26,.25) 100%)}
        .hero-content{position:relative;z-index:2;min-height:610px;display:flex;align-items:center}
        .hero-copy{max-width:710px;padding:72px 0 84px}
        .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--copper);font-size:13px;font-weight:800;letter-spacing:.14em;margin-bottom:18px}
        .eyebrow:before{content:"";width:25px;height:2px;background:var(--copper)}
        h1{font-size:clamp(32px,4vw,48px);line-height:1.25;letter-spacing:-.04em;margin-bottom:18px;font-weight:800}
        .hero-copy p{max-width:650px;color:#eee8de;font-size:17px;line-height:1.9;margin-bottom:28px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .trust-bar{position:absolute;z-index:3;bottom:28px;left:0;right:0;border-top:1px solid rgba(237,230,218,.32);padding-top:16px}
        .trust-items{display:flex;gap:32px;color:#d8d2c7;font-size:13px}
        .trust-items span:before{content:"✓";color:var(--copper);font-weight:800;margin-right:7px}
        .hero-controls{position:absolute;z-index:4;right:calc((100% - var(--container))/2);bottom:31px;display:flex;gap:8px}
        .hero-arrow,.dot{border:1px solid rgba(255,255,255,.5);background:rgba(18,23,26,.35);color:white}
        .hero-arrow{width:38px;height:34px}.dot{width:9px;height:9px;border-radius:50%;padding:0;margin-top:13px}
        .dot.active{background:var(--copper);border-color:var(--copper)}
        section{padding:98px 0;scroll-margin-top:116px}
        .section-head{max-width:720px;margin-bottom:42px}
        .section-head.right{margin-left:auto}
        .section-kicker{font-size:12px;color:var(--copper);font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin-bottom:8px}
        h2{font-size:clamp(26px,3vw,34px);line-height:1.35;letter-spacing:-.035em;margin-bottom:14px}
        h3{font-size:19px;line-height:1.45;margin-bottom:8px}
        .section-head p,.intro-copy p{color:var(--muted);line-height:1.85}
        .intro{background:var(--card)}
        .intro-grid{display:grid;grid-template-columns:5fr 6fr;gap:74px;align-items:center}
        .intro-copy .section-head{margin-bottom:21px}
        .intro-image{position:relative}
        .intro-image img{width:100%;height:480px;object-fit:cover;border-radius:var(--radius)}
        .spec-box{position:absolute;bottom:-22px;left:-22px;background:var(--ink);color:#fff;padding:20px 24px;border-left:4px solid var(--copper);box-shadow:var(--shadow-lg)}
        .spec-box b{display:block;font-size:28px;color:var(--copper);line-height:1.2}.spec-box span{font-size:13px;color:#d0cbc2}
        .check-list{display:grid;gap:12px;margin-top:24px}
        .check-list li{display:flex;gap:12px;color:#404746}.check-list li:before{content:"01";color:var(--copper);font-weight:800}.check-list li:nth-child(2):before{content:"02"}.check-list li:nth-child(3):before{content:"03"}
        .functions{background:var(--paper)}
        .process{display:grid;grid-template-columns:repeat(5,1fr);border-top:2px solid var(--ink);margin-bottom:42px}
        .process-item{position:relative;padding:18px 14px 10px;color:var(--muted);font-size:14px}
        .process-item:before{content:"";position:absolute;top:-7px;left:14px;width:12px;height:12px;background:var(--copper);border:3px solid var(--paper);border-radius:50%}
        .process-item strong{display:block;color:var(--ink);font-size:16px;margin-bottom:3px}
        .function-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
        .function-card{background:var(--card);border:1px solid var(--line);padding:25px;min-height:166px;transition:var(--ease)}
        .function-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
        .line-icon{width:34px;height:34px;border:1px solid var(--copper);color:var(--copper);display:grid;place-items:center;margin-bottom:17px;font-weight:800}
        .function-card p,.adv-card p{font-size:14px;color:var(--muted);line-height:1.7}
        .advantages{background:var(--card)}
        .adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
        .adv-card{border-top:3px solid var(--ink);padding:22px 20px 20px;background:#faf7f0}
        .adv-card .metric{font-size:25px;font-weight:800;color:var(--copper);line-height:1.2;margin-bottom:8px}
        .adv-card h3{font-size:17px}
        .scenes{background:var(--paper)}
        .scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
        .scene-card{min-height:280px;position:relative;overflow:hidden;border-radius:var(--radius);color:#fff;background:var(--ink)}
        .scene-card img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover;opacity:.55;transition:var(--ease)}
        .scene-card:hover img{transform:scale(1.04);opacity:.68}
        .scene-card:after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(18,23,26,.9))}
        .scene-body{position:absolute;z-index:1;bottom:0;padding:25px;width:100%}
        .scene-body h3{font-size:21px}.scene-body ul{display:flex;gap:14px;flex-wrap:wrap;color:#e8e0d4;font-size:13px}.scene-body li:before{content:"·";color:var(--copper);margin-right:5px}
        .products{background:var(--card)}
        .product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
        .product-card{background:#fff;border:1px solid var(--line);overflow:hidden;border-radius:var(--radius);transition:var(--ease);display:flex;flex-direction:column}
        .product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
        .product-image{height:270px;overflow:hidden;position:relative}.product-image img{width:100%;height:100%;object-fit:cover;transition:var(--ease)}.product-card:hover .product-image img{transform:scale(1.04)}
        .badge{position:absolute;top:16px;left:16px;background:var(--copper);color:#fff;padding:4px 9px;border-radius:3px;font-size:12px}
        .product-body{padding:24px;display:flex;flex-direction:column;flex:1}.product-body h3{font-size:21px}.product-body p{font-size:14px;color:var(--muted);margin-bottom:15px}
        .chips{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:20px}.chip{border:1px solid var(--line);color:#58605d;font-size:12px;padding:4px 8px;background:var(--paper);border-radius:3px}
        .product-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px}.product-foot strong{font-size:18px}.product-foot small{font-size:12px;color:var(--muted);font-weight:400}
        .demo{background:#e9e3d9}
        .demo-stage{display:grid;grid-template-columns:290px 1fr;gap:26px;background:var(--ink-deep);padding:25px;border-radius:var(--radius);color:var(--cream)}
        .demo-steps{display:grid;align-content:center;gap:4px}.demo-step{padding:17px;border-left:3px solid transparent;color:#aeb0aa;cursor:pointer;transition:var(--ease)}.demo-step.active,.demo-step:hover{background:#20292d;border-left-color:var(--copper);color:#fff}.demo-step b{display:block;color:inherit}.demo-step span{font-size:12px}
        .console{background:#f5f0e7;color:var(--ink);min-height:330px;padding:27px;border-radius:4px;position:relative}.console-top{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:20px}.console-title{font-weight:800}.status{color:var(--moss);font-size:13px}.route-line{height:5px;background:var(--line);margin:35px 15px;position:relative}.route-line:before{content:"";position:absolute;left:0;top:-5px;width:62%;height:5px;background:var(--copper)}.route-points{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.console-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:30px}.console-cell{background:#fff;border:1px solid var(--line);padding:12px}.console-cell small{display:block;color:var(--muted);font-size:11px}.console-cell b{font-size:15px}
        .cases{background:var(--ink-deep);color:var(--cream)}
        .cases .section-head p{color:#b9b5ad}.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#394044}.case-item{background:var(--ink-deep);padding:30px 27px;min-height:235px}.case-item h3{color:#fff;font-size:21px}.case-item p{font-size:14px;color:#bdb9b0;line-height:1.75}.case-results{display:flex;gap:25px;border-top:1px solid #3c4548;margin-top:20px;padding-top:17px}.case-results b{display:block;color:var(--copper);font-size:25px;line-height:1.2}.case-results span{font-size:11px;color:#aaa9a2}
        .stories{background:var(--card)}
        .story-line{display:grid;grid-template-columns:repeat(3,1fr);gap:0;position:relative}.story-line:before{content:"";position:absolute;top:22px;left:9%;right:9%;height:1px;background:var(--line)}.story{position:relative;padding:58px 28px 10px;border-right:1px solid var(--line)}.story:last-child{border:0}.story:before{content:"";position:absolute;top:16px;left:28px;width:13px;height:13px;border-radius:50%;background:var(--copper);border:4px solid var(--card);box-shadow:0 0 0 1px var(--copper)}.story-label{font-size:12px;color:var(--copper);font-weight:800}.story p{font-size:14px;color:var(--muted);line-height:1.75}
        .pricing{background:var(--paper)}
        .price-layout{display:grid;grid-template-columns:1fr 1.6fr;gap:28px;align-items:stretch}.price-list{background:var(--ink);color:var(--cream);padding:30px}.price-list h3{color:#fff}.price-option{border-top:1px solid #465055;padding:18px 0}.price-option strong{display:flex;justify-content:space-between;color:#fff}.price-option span{font-size:13px;color:#bcb9b2}.price-table-wrap{overflow-x:auto;background:var(--card);border:1px solid var(--line)}.price-table{width:100%;border-collapse:collapse;min-width:560px}.price-table th,.price-table td{text-align:left;padding:17px 18px;border-bottom:1px solid var(--line);font-size:14px}.price-table th{color:var(--muted);font-weight:600;background:#fbf8f1}.price-table .recommended{background:#fff1e8}.price-table .recommended th{color:var(--copper)}
        .stats{padding:48px 0;background:var(--copper);color:#fff}.stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}.stat{text-align:center;border-right:1px solid rgba(255,255,255,.35)}.stat:last-child{border:0}.stat b{display:block;font-size:35px;line-height:1.2}.stat span{font-size:13px;color:#fae9dc}
        .reviews{background:var(--card)}.review-grid{columns:3 260px;column-gap:18px}.review{break-inside:avoid;background:#faf7f0;border:1px solid var(--line);padding:22px;margin-bottom:18px}.stars{color:var(--copper);letter-spacing:2px;margin-bottom:9px}.review p{font-size:14px;line-height:1.75;margin-bottom:13px}.review footer{font-size:12px;color:var(--muted)}
        .voices{background:var(--paper)}.voice-box{display:grid;grid-template-columns:1fr 1.5fr;gap:50px;align-items:center;border-left:5px solid var(--copper);padding:25px 38px;background:var(--card)}.voice-box blockquote{font-size:24px;line-height:1.6;font-weight:700}.voice-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.voice-meta div{border-left:1px solid var(--line);padding-left:16px}.voice-meta b{display:block;font-size:20px}.voice-meta span{font-size:13px;color:var(--muted)}
        .news{background:var(--card)}.news-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:22px}.news-feature,.news-small{border:1px solid var(--line);background:#fff;overflow:hidden}.news-feature img{width:100%;height:260px;object-fit:cover}.news-copy{padding:21px}.news-copy time{font-size:12px;color:var(--copper)}.news-copy h3{margin:7px 0;font-size:19px}.news-copy p{font-size:14px;color:var(--muted);line-height:1.75}.news-list{display:grid;gap:12px}.news-small{display:grid;grid-template-columns:125px 1fr}.news-small img{width:125px;height:100%;min-height:125px;object-fit:cover}.news-small .news-copy{padding:15px}.news-small h3{font-size:16px}.news-small p{font-size:13px;line-height:1.6}
        .faq{background:var(--paper)}.faq-list{max-width:900px;border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line);background:var(--card)}.faq-item summary{list-style:none;cursor:pointer;padding:19px 24px;font-weight:700;position:relative}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";position:absolute;right:24px;color:var(--copper);font-size:22px;font-weight:400;top:14px}.faq-item[open] summary{border-left:3px solid var(--copper);color:var(--copper)}.faq-item[open] summary:after{content:"−"}.faq-answer{padding:0 52px 22px 27px;color:var(--muted);font-size:14px;line-height:1.9}
        .cta-section{padding:98px 0;background:var(--ink-deep);color:var(--cream)}.cta-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}.cta-section h2{color:#fff}.cta-section .section-head p{color:#bdbab2}.contact-list{display:grid;gap:12px;margin-top:28px;color:#d2cec5;font-size:14px}.contact-list strong{color:var(--copper);margin-right:10px}.lead-form{background:#f8f3ea;padding:27px;border-radius:var(--radius);color:var(--ink);display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:flex;flex-direction:column;gap:5px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field input,.field select{border:1px solid #d8cbbb;background:#fffdf8;border-radius:6px;padding:11px 12px;color:var(--ink);min-height:46px}.field input:focus,.field select:focus{border-color:var(--copper);outline:2px solid rgba(196,92,38,.18)}.form-submit{grid-column:1/-1;display:flex;align-items:center;gap:14px;margin-top:5px}.form-status{font-size:13px;color:var(--moss);display:none}.form-status.show{display:block}
        footer{background:#0e1214;color:#bdbbb4;padding:54px 0 22px;font-size:13px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:42px;padding-bottom:36px;border-bottom:1px solid #303638}.footer-brand strong{font-size:19px;color:#fff;display:block;margin-bottom:12px}.footer-brand p{max-width:270px;line-height:1.8}.footer-col h3{color:#fff;font-size:14px;margin-bottom:14px}.footer-col li{margin:8px 0}.footer-col a:hover{color:var(--copper)}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;color:#898c88}.footer-bottom a{color:#c8c5bd}.footer-bottom a:hover{color:var(--copper)}
        @media(max-width:1024px){
            .nav-inner{gap:17px}.logo{min-width:190px}.nav-links{gap:14px}.nav-links a{font-size:13px}.nav-cta{padding-inline:14px}
            .intro-grid{gap:40px}.hero-controls{right:24px}.container{width:min(var(--container),calc(100% - 40px))}
        }
        @media(max-width:768px){
            html{scroll-padding-top:74px}.topbar{height:auto;min-height:38px}.topbar .container{padding:7px 0;gap:8px}.topbar-right{gap:10px}.topbar-right a:first-child{display:none}.topbar{font-size:11px}
            .main-nav{height:72px}.nav-inner{justify-content:space-between}.logo{min-width:0}.nav-links{position:fixed;inset:72px 0 0;background:var(--card);display:flex;flex-direction:column;justify-content:flex-start;align-items:stretch;gap:0;padding:18px 24px;transform:translateX(100%);transition:transform .3s ease;box-shadow:var(--shadow-lg)}.nav-links.open{transform:translateX(0)}.nav-links a{padding:15px 5px;border-bottom:1px solid var(--line);font-size:16px}.nav-links a:after{bottom:0}.nav-cta{display:none}.menu-toggle{display:block}
            .hero,.hero-content{min-height:550px}.hero-copy{padding:64px 0 105px}.hero-copy p{font-size:15px}.trust-items{gap:12px;flex-wrap:wrap;font-size:11px}.hero-controls{bottom:30px;right:20px}
            section{padding:70px 0}.section-head{margin-bottom:28px}.intro-grid,.price-layout,.cta-grid,.voice-box{grid-template-columns:1fr;gap:30px}.intro-image img{height:350px}.spec-box{left:15px}
            .process{overflow-x:auto;grid-template-columns:repeat(5,150px)}.function-grid,.adv-grid{grid-template-columns:repeat(2,1fr)}.product-grid,.scene-grid{grid-template-columns:1fr}.product-image{height:300px}.demo-stage{grid-template-columns:1fr}.demo-steps{grid-template-columns:repeat(4,1fr)}.demo-step{padding:12px 8px;font-size:13px}.demo-step span{display:none}.case-grid{grid-template-columns:1fr}.story-line{grid-template-columns:1fr;gap:15px}.story-line:before{top:12px;bottom:12px;left:8px;width:1px;height:auto}.story{padding:10px 20px 20px 45px;border:0}.story:before{top:12px;left:2px}.stats-grid{grid-template-columns:repeat(3,1fr);row-gap:25px}.stat:nth-child(3){border:0}.stat b{font-size:28px}.news-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}
        }
        @media(max-width:520px){
            .container{width:calc(100% - 32px)}h1{font-size:31px}.hero-copy{padding-top:46px}.hero{min-height:570px}.hero-content{min-height:570px}.hero-slide:after{background:linear-gradient(90deg,rgba(18,23,26,.92),rgba(18,23,26,.45))}
            .hero-actions .btn{width:100%}.trust-bar{bottom:18px}.trust-items{display:grid;grid-template-columns:1fr 1fr;gap:4px}.hero-controls{bottom:76px}
            .function-grid,.adv-grid{grid-template-columns:repeat(2,1fr);gap:10px}.function-card{padding:17px;min-height:185px}.adv-card{padding:17px 13px}.adv-card .metric{font-size:21px}.adv-card h3{font-size:15px}.adv-card p{font-size:12px}
            .product-image{height:235px}.product-body{padding:19px}.demo-stage{padding:14px}.demo-steps{grid-template-columns:repeat(2,1fr)}.console{padding:18px;min-height:290px}.console-grid{gap:6px}.console-cell{padding:8px}.console-cell b{font-size:12px}
            .case-item{padding:23px 18px}.case-results{gap:14px}.price-list{padding:22px}.price-table-wrap:after{content:"左右滑动查看套餐";display:block;padding:9px 15px;color:var(--muted);font-size:12px}.voice-box{padding:22px 20px}.voice-box blockquote{font-size:19px}.voice-meta{grid-template-columns:1fr 1fr}.voice-meta div:last-child{grid-column:1/-1}
            .news-small{grid-template-columns:105px 1fr}.news-small img{width:105px;min-height:135px}.news-small .news-copy{padding:11px}.news-small p{display:none}.lead-form{grid-template-columns:1fr;padding:20px}.field.full,.form-submit{grid-column:auto}.form-submit{display:block}.form-submit .btn{width:100%}.form-status{margin-top:10px}
            .footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-brand{grid-column:1/-1}
        }