/* roulang page: index */
:root{
  --ink:#18231f;--muted:#68736d;--paper:#f5f4ef;--white:#fff;
  --deep:#17211d;--deep2:#223129;--line:#dfe3dc;--accent:#d9f447;
  --orange:#e8753d;--ok:#4fa979;--warn:#e2a53a;--danger:#d95e52;
  --radius:18px;--radius-sm:11px;--shadow:0 16px 40px rgba(24,35,31,.09);
  --container:1240px;--ease:all .28s ease;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7;font-size:16px;overflow-x:hidden}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(216,244,71,.75);outline-offset:3px}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}.topline{background:var(--deep);color:#dce5dc;height:48px;font-size:13px}.topline .container{height:100%;display:flex;align-items:center;justify-content:space-between}.trust{display:flex;gap:26px}.top-contact{display:flex;align-items:center;gap:20px}.phone{color:var(--accent);font-weight:700}.header{position:sticky;top:0;z-index:20;background:rgba(245,244,239,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:var(--ease)}.header.scrolled{box-shadow:0 8px 25px rgba(24,35,31,.1)}.navrow{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;letter-spacing:-.04em}.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--accent);position:relative}.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--deep);height:4px;border-radius:4px;left:8px;right:8px;transform:rotate(-35deg)}.brand-mark:before{top:11px}.brand-mark:after{top:19px}.navlinks{display:flex;gap:27px;align-items:center}.navlinks a{font-size:14px;color:#52605a;position:relative;padding:27px 0}.navlinks a:after{content:"";position:absolute;bottom:16px;left:0;width:0;height:2px;background:var(--orange);transition:var(--ease)}.navlinks a:hover,.navlinks a.active{color:var(--ink)}.navlinks a.active:after,.navlinks a:hover:after{width:100%}.nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:9px;padding:13px 20px;font-weight:700;transition:var(--ease)}.nav-cta,.btn-primary{background:var(--orange);color:#fff}.nav-cta:hover,.btn-primary:hover{background:#c95e2c;transform:translateY(-2px)}.menu-btn{display:none;background:none;font-size:25px;color:var(--ink);padding:8px}.hero{min-height:650px;position:relative;color:#fff;background:var(--deep);overflow:hidden}.slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity .7s ease}.slide:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,29,25,.94) 0%,rgba(20,29,25,.68) 48%,rgba(20,29,25,.2));}.slide.active{opacity:1}.hero-content{position:relative;z-index:2;min-height:650px;display:flex;align-items:center}.hero-copy{width:min(690px,100%)}.eyebrow,.section-kicker{font-size:12px;text-transform:uppercase;letter-spacing:.14em;color:var(--orange);font-weight:800}.hero h1{font-size:clamp(40px,5vw,72px);line-height:1.13;letter-spacing:-.06em;margin:16px 0 22px;max-width:700px}.hero p{font-size:18px;color:#d8e0d8;max-width:650px;margin:0 0 28px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.btn-secondary{border:1px solid rgba(255,255,255,.42);color:#fff;background:transparent}.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}.hero-tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:36px}.tag,.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:30px;padding:6px 11px;font-size:12px;color:var(--muted);background:#fff}.hero .tag{border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.08);color:#e4ebe3}.hero-sticker{position:absolute;right:6%;top:20%;z-index:3;background:var(--accent);color:var(--deep);width:110px;height:110px;border-radius:50%;display:grid;place-items:center;text-align:center;font-weight:800;font-size:14px;transform:rotate(10deg)}.slider-controls{position:absolute;z-index:4;bottom:34px;right:calc((100% - var(--container))/2);display:flex;gap:8px}.slider-controls button{width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.3)}.slider-controls button:hover{background:var(--orange)}.dots{position:absolute;left:calc((100% - var(--container))/2);bottom:49px;z-index:4;display:flex;gap:8px}.dots button{width:28px;height:4px;background:#758077;border-radius:4px}.dots button.active{background:var(--accent);width:52px}
section{padding:105px 0;scroll-margin-top:80px}.section-head{max-width:720px;margin-bottom:45px}.section-head h2{font-size:clamp(29px,3.5vw,46px);line-height:1.22;letter-spacing:-.045em;margin:10px 0 17px}.section-head p{color:var(--muted);margin:0;font-size:17px}.split{display:grid;grid-template-columns:5fr 7fr;gap:70px;align-items:center}.visual-frame{border-radius:24px;overflow:hidden;background:#dce3d9;box-shadow:var(--shadow);position:relative}.visual-frame img{width:100%;height:430px;object-fit:cover}.visual-frame .caption{position:absolute;bottom:0;left:0;right:0;padding:20px 24px;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.7));font-size:14px}.spec-list{border-top:1px solid var(--line);margin-top:28px}.spec-list div{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);gap:20px}.spec-list strong{font-size:14px}.spec-list span{color:var(--muted);font-size:14px;text-align:right}.capability{background:#ebece5}.map-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.cap-card{background:var(--white);padding:25px;border:1px solid var(--line);min-height:200px;border-radius:var(--radius);transition:var(--ease)}.cap-card:hover,.product:hover,.case:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#bdc9b8}.num{color:var(--orange);font-size:13px;font-weight:800}.cap-card h3{font-size:20px;margin:25px 0 8px}.cap-card p,.product p,.case p{color:var(--muted);font-size:14px;margin:0}.product-area{background:#fff}.product-layout{display:grid;grid-template-columns:1.35fr .8fr .8fr;gap:16px;align-items:stretch}.product{border:1px solid var(--line);border-radius:var(--radius);padding:18px;transition:var(--ease);background:#fff}.product.main-product{grid-row:span 2;background:var(--deep);color:#fff}.product-img{height:190px;border-radius:12px;overflow:hidden;margin-bottom:21px}.product-img img{width:100%;height:100%;object-fit:cover}.product:not(.main-product) .product-img{height:115px}.product h3{margin:0 0 8px;font-size:20px}.main-product p{color:#bdc9c0}.product .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:18px}.product .badge{background:#f3f4ed;padding:4px 8px}.main-product .badge{background:#314239;color:#e4eee2;border-color:#46584b}
.scenarios{background:#f0eee6}.scenario-wrap{display:grid;grid-template-columns:270px 1fr;gap:24px}.scenario-tabs{display:flex;flex-direction:column;gap:8px}.scenario-tab{text-align:left;padding:18px;background:transparent;border-left:3px solid transparent;color:var(--muted);border-radius:0 10px 10px 0}.scenario-tab:hover,.scenario-tab.active{background:#fff;color:var(--ink);border-left-color:var(--orange);font-weight:700}.scenario-panel{display:none;background:#fff;padding:35px;border-radius:22px;min-height:300px}.scenario-panel.active{display:block}.scenario-panel h3{font-size:28px;margin:0 0 12px}.scenario-panel p{color:var(--muted);max-width:650px}.scenario-meta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.demo{background:#fff}.dashboard{display:grid;grid-template-columns:1.4fr .6fr;gap:18px;background:var(--deep);padding:18px;border-radius:24px;box-shadow:var(--shadow)}.dash-map{min-height:390px;background:url('/assets/images/32c93522183bbf6b.webp') center/cover;border-radius:15px;position:relative}.route{position:absolute;left:18%;top:48%;width:58%;height:90px;border-top:3px solid var(--accent);border-radius:50%;transform:rotate(-12deg)}.node{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 6px rgba(232,117,61,.2)}.node.one{left:18%;top:45%}.node.two{left:74%;top:29%}.dash-side{display:flex;flex-direction:column;gap:12px}.dash-card{background:#2b3b31;padding:18px;border-radius:12px;color:#fff}.dash-card small{color:#a9b9ae}.dash-card strong{display:block;font-size:27px;color:var(--accent);margin-top:6px}.process{background:#e4e8df}.process-line{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}.process-line:before{content:"";position:absolute;top:24px;left:8%;right:8%;height:2px;background:#c1cbc0}.step{position:relative;text-align:center;padding:0 12px}.step b{display:grid;place-items:center;width:50px;height:50px;background:var(--orange);color:#fff;border-radius:50%;margin:0 auto 20px;position:relative;border:7px solid #e4e8df}.step h3{font-size:17px;margin:0 0 8px}.step p{font-size:13px;color:var(--muted);margin:0}.dark-case{background:var(--deep);color:#fff}.dark-case .section-kicker{color:var(--accent)}.dark-case .section-head p{color:#b9c7bd}.case-highlight{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}.quote{font-size:clamp(26px,3.4vw,46px);line-height:1.35;letter-spacing:-.04em;margin:0}.case-stat{border-left:1px solid #526157;padding-left:28px}.case-stat strong{font-size:58px;color:var(--accent);display:block;line-height:1}.case-stat span{color:#c2cec4}.cases{background:#fff}.case-track{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.case{border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:var(--ease);background:#fff}.case img{height:190px;width:100%;object-fit:cover}.case-body{padding:23px}.case-body h3{margin:0 0 9px;font-size:19px}.case-body .badge{margin-bottom:14px;background:#f1f3ed}.plans{background:#eeefe9}.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.plan{background:#fff;border:1px solid var(--line);padding:29px;border-radius:18px;position:relative}.plan.recommended{border:2px solid var(--orange);padding:28px}.recommend{position:absolute;right:20px;top:20px;color:var(--orange);font-size:12px;font-weight:800}.plan h3{margin:0 0 12px;font-size:22px}.plan p{color:var(--muted);font-size:14px;min-height:50px}.plan ul{padding:0;margin:22px 0;list-style:none;border-top:1px solid var(--line)}.plan li{padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}.plan li:before{content:"✓";color:var(--ok);font-weight:bold;margin-right:8px}.reviews{background:#f8f8f4}.review-wall{display:flex;gap:16px;overflow-x:auto;padding:4px 3px 20px}.review{min-width:340px;background:#fff;border:1px solid var(--line);padding:27px;border-radius:17px}.stars{color:var(--orange);letter-spacing:3px}.review blockquote{font-size:17px;margin:18px 0;line-height:1.8}.review small{color:var(--muted)}.story{background:#dedfd5}.story-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:center}.story img{height:370px;width:100%;object-fit:cover;border-radius:23px}.story-steps{border-left:2px solid var(--orange);padding-left:25px}.story-step{margin:0 0 25px}.story-step strong{display:block;font-size:18px;margin-bottom:5px}.story-step p{margin:0;color:var(--muted);font-size:14px}.stats{padding:58px 0;background:var(--orange);color:#fff}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.stat{border-left:1px solid rgba(255,255,255,.4);padding-left:25px}.stat strong{font-size:39px;display:block}.stat span{font-size:14px;color:#ffe2d4}.news{background:#fff}.news-grid{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:16px}.news-item{padding:24px;border:1px solid var(--line);border-radius:15px;transition:var(--ease)}.news-item:hover{border-color:var(--orange);transform:translateY(-3px)}.news-item:first-child{background:var(--deep);color:#fff}.news-item:first-child p,.news-item:first-child small{color:#b9c7bd}.news-item h3{font-size:19px;margin:13px 0 10px}.news-item p{font-size:14px;color:var(--muted);margin:0 0 20px}.faq{background:#f0f1eb}.faq-list{max-width:900px}.faq-item{border-top:1px solid #cbd2c8}.faq-q{width:100%;background:none;text-align:left;padding:21px 0;display:flex;justify-content:space-between;font-weight:700;color:var(--ink);font-size:17px}.faq-q span{color:var(--orange);font-size:25px;line-height:1}.faq-a{max-height:0;overflow:hidden;color:var(--muted);font-size:15px;transition:max-height .3s ease}.faq-item.open .faq-a{max-height:150px;padding:0 35px 21px 0}.contact{background:var(--deep);color:#fff}.contact .section-head p{color:#bac8bd}.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px}.contact-points{margin-top:30px;display:grid;gap:14px}.contact-point{display:flex;gap:12px;align-items:center;color:#ccd7ce}.contact-point i{width:30px;height:30px;border-radius:50%;background:var(--accent);display:grid;place-items:center;color:var(--deep);font-style:normal;font-weight:800}.form{background:#fff;color:var(--ink);padding:30px;border-radius:20px;display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field input,.field select,.field textarea{border:1px solid var(--line);border-radius:8px;padding:12px 13px;background:#fafbf8;color:var(--ink);transition:var(--ease)}.field textarea{min-height:100px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--orange);background:#fff;outline:2px solid rgba(232,117,61,.15)}.form .btn{grid-column:1/-1;justify-self:start}.form-note{grid-column:1/-1;color:var(--muted);font-size:12px;margin:0}.form-status{grid-column:1/-1;font-size:13px;color:var(--ok);display:none}.footer{background:#111815;color:#aebbb0;padding:55px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:40px;border-bottom:1px solid #34413a}.footer .brand{color:#fff;margin-bottom:14px}.footer h3{color:#fff;font-size:15px;margin:0 0 15px}.footer a{display:block;font-size:14px;margin:8px 0}.footer a:hover{color:var(--accent)}.footer p{font-size:13px;margin:7px 0}.copyright{display:flex;justify-content:space-between;gap:20px;padding-top:22px;font-size:12px}.disabled{opacity:.55;cursor:not-allowed}
@media(max-width:1024px){.navlinks{gap:15px}.navlinks a{font-size:13px}.split,.case-highlight,.story-grid,.contact-grid{gap:35px}.product-layout{grid-template-columns:1fr 1fr}.product.main-product{grid-row:auto;grid-column:1/-1}.news-grid{grid-template-columns:1fr 1fr}.news-item:first-child{grid-column:1/-1}}
@media(max-width:768px){.container{width:min(100% - 32px,var(--container))}.topline{display:none}.header{height:66px}.navrow{height:66px}.navlinks{position:absolute;top:65px;left:0;right:0;background:var(--paper);display:none;padding:10px 16px 20px;border-bottom:1px solid var(--line);box-shadow:0 15px 20px rgba(0,0,0,.08)}.navlinks.open{display:flex;flex-direction:column;align-items:stretch;gap:0}.navlinks a{padding:13px 8px}.navlinks a:after{bottom:5px}.nav-cta{display:none}.menu-btn{display:block}.hero,.hero-content{min-height:650px}.hero h1{font-size:43px}.hero p{font-size:16px}.hero-sticker{right:8%;top:13%;width:84px;height:84px;font-size:12px}.slider-controls{right:16px}.dots{left:16px}.split,.scenario-wrap,.dashboard,.case-highlight,.story-grid,.contact-grid{grid-template-columns:1fr}.map-grid,.case-track,.plan-grid{grid-template-columns:1fr 1fr}.scenario-tabs{display:grid;grid-template-columns:1fr 1fr}.process-line{grid-template-columns:1fr;gap:22px}.process-line:before{top:24px;bottom:24px;left:calc(50% - 1px);width:2px;height:auto;right:auto}.step{display:grid;grid-template-columns:70px 1fr;text-align:left;align-items:center}.step b{grid-row:span 2;margin:0}.step h3{align-self:end}.step p{align-self:start}.stat-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{flex-direction:column}.visual-frame img{height:330px}}
@media(max-width:520px){section{padding:72px 0}.hero h1{font-size:37px}.hero-sticker{display:none}.hero-actions .btn{width:100%}.map-grid,.product-layout,.case-track,.plan-grid,.news-grid,.form{grid-template-columns:1fr}.product.main-product{grid-column:auto}.news-item:first-child{grid-column:auto}.scenario-tabs{grid-template-columns:1fr}.scenario-panel{padding:25px}.dash-map{min-height:270px}.stat strong{font-size:30px}.review{min-width:285px}.form{padding:21px}.footer-grid{grid-template-columns:1fr}.footer{padding-top:40px}}