/* roulang page: index */
:root{
      --ink:#20272b;--body:#4b565a;--paper:#f6f7f4;--surface:#fff;
      --teal:#0e625c;--teal-dark:#093f3c;--signal:#d9783a;--mist:#dce5e1;
      --border:#d5ddda;--success:#327a5c;--muted:#718083;--shadow:0 12px 32px rgba(25,43,42,.08);
      --radius:7px;--container:1240px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--body);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid var(--signal);outline-offset:3px}
    .wrap{width:min(calc(100% - 64px),var(--container));margin:auto}
    .section{padding:86px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--teal);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--signal)}
    h1,h2,h3,p{margin-top:0}
    h1,h2,h3{color:var(--ink);line-height:1.27;font-weight:750}
    h2{font-size:36px;margin-bottom:15px}
    h3{font-size:20px;margin-bottom:8px}
    .section-intro{max-width:760px;margin-bottom:35px}
    .section-intro p{margin-bottom:0}
    .btn{min-height:46px;padding:10px 21px;border:1px solid transparent;border-radius:4px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;transition:.2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-main{background:var(--teal);color:#fff}.btn-main:hover{background:var(--teal-dark);color:#fff}
    .btn-light{background:#fff;color:var(--ink);border-color:#fff}.btn-light:hover{background:var(--mist);color:var(--ink)}
    .btn-outline{border-color:var(--teal);color:var(--teal);background:transparent}.btn-outline:hover{background:var(--teal);color:#fff}
    .btn-signal{background:var(--signal);color:#fff}.btn-signal:hover{background:#b95d27;color:#fff}
    .topbar{background:var(--teal-dark);color:#dbe8e4;font-size:13px}
    .topbar .wrap{min-height:39px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .brandline{display:flex;align-items:center;gap:13px}
    .brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;letter-spacing:.04em}
    .brand-mark{width:27px;height:27px;border:2px solid var(--signal);position:relative;border-radius:3px}
    .brand-mark:after{content:"";position:absolute;left:5px;right:5px;top:11px;height:2px;background:var(--signal);box-shadow:0 -6px 0 rgba(255,255,255,.8),0 6px 0 rgba(255,255,255,.8)}
    .sub-brand{color:#a9c5c0;border-left:1px solid rgba(255,255,255,.22);padding-left:13px}
    .top-tools{display:flex;gap:18px;align-items:center}.top-tools a:hover{color:#fff}
    .mainnav{background:rgba(255,255,255,.98);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40}
    .nav-inner{min-height:61px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .menu{display:flex;align-items:center;margin:0;gap:3px;list-style:none}
    .menu a{display:block;padding:18px 13px;color:#3c484b;font-size:14px;font-weight:650;border-bottom:3px solid transparent;transition:.2s}
    .menu a:hover,.menu a.active{color:var(--teal);border-bottom-color:var(--signal)}
    .nav-contact{font-size:14px;white-space:nowrap}
    .mobile-trigger{display:none;border:0;background:transparent;color:var(--teal);font-size:24px;min-width:44px;min-height:44px}
    .hero{height:650px;min-height:590px;position:relative;color:#fff;background:#193b39;overflow:hidden}
    .hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity .7s ease}
    .hero-slide.current{opacity:1}
    .hero-slide:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,28,27,.84) 0%,rgba(6,28,27,.62) 47%,rgba(6,28,27,.22) 100%)}
    .hero-content{position:relative;z-index:2;height:100%;display:flex;align-items:center;padding:62px 0 88px}
    .hero-copy{max-width:810px}
    .hero .eyebrow{color:#efaa7d}.hero .eyebrow:before{background:#efaa7d}
    .hero h1{font-size:49px;color:#fff;max-width:790px;margin:15px 0 21px}
    .hero p{font-size:17px;line-height:1.85;max-width:760px;color:#e3efec;margin-bottom:27px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
    .hero-bottom{position:absolute;bottom:0;left:0;right:0;z-index:3;background:rgba(5,34,32,.77);border-top:1px solid rgba(255,255,255,.22)}
    .hero-bottom .wrap{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .slide-status{display:flex;gap:9px;align-items:center;font-size:13px}.dots{display:flex;gap:7px}.dot{width:25px;height:3px;border:0;background:rgba(255,255,255,.42);padding:0}.dot.active{background:var(--signal)}
    .slide-controls{display:flex;gap:8px}.slide-controls button{width:42px;height:42px;border:1px solid rgba(255,255,255,.5);background:transparent;color:#fff;font-size:20px}.slide-controls button:hover{background:#fff;color:var(--teal-dark)}
    .intro-grid{display:grid;grid-template-columns:5fr 7fr;gap:74px;align-items:center}
    .intro-list{padding:0;margin:24px 0 0;list-style:none}.intro-list li{border-top:1px solid var(--border);padding:12px 0;display:flex;justify-content:space-between;gap:15px;color:var(--ink);font-weight:650}.intro-list span{color:var(--teal);font-size:13px}
    .visual-board{position:relative;min-height:430px;background:var(--teal-dark);overflow:hidden}
    .visual-board img{width:100%;height:430px;object-fit:cover;opacity:.68}
    .board-label{position:absolute;left:25px;bottom:23px;color:#fff;border-left:3px solid var(--signal);padding-left:14px}.board-label b{display:block;font-size:20px}.board-label small{color:#d5e8e3}
    .scene-strip{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:#fff}
    .scene-strip .wrap{padding:22px 0;display:flex;align-items:center;gap:25px;overflow:auto}
    .scene-title{color:var(--ink);font-weight:800;white-space:nowrap}
    .scene-link{white-space:nowrap;border:1px solid var(--border);padding:8px 13px;border-radius:3px;font-size:14px;color:#455255;transition:.2s}.scene-link:hover{border-color:var(--teal);color:var(--teal);background:#f1f7f5}
    .matrix{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:16px}
    .capability{min-height:245px;padding:24px;border:1px solid var(--border);background:#fff;position:relative;transition:.25s}
    .capability:hover{border-color:var(--teal);box-shadow:var(--shadow);transform:translateY(-3px)}
    .capability:nth-child(1),.capability:nth-child(4){background:#eaf1ef}
    .capability:nth-child(2){background:var(--teal-dark);color:#dcebe7}.capability:nth-child(2) h3{color:#fff}
    .capability:nth-child(3){grid-row:span 2}.capability:nth-child(6){background:#fbf0e9}
    .num{font-size:13px;color:var(--signal);font-weight:800;letter-spacing:.1em}
    .capability p{font-size:14px;line-height:1.7;margin:0}.tag{display:inline-block;margin-top:15px;padding:4px 8px;background:rgba(14,98,92,.1);color:var(--teal);font-size:12px;font-weight:700}.capability:nth-child(2) .tag{background:rgba(255,255,255,.13);color:#d9f0e9}
    .products{display:grid;grid-template-columns:1.35fr .8fr .8fr;gap:18px}
    .product{background:#fff;border:1px solid var(--border);overflow:hidden;display:flex;flex-direction:column}.product:first-child{grid-row:span 2}.product img{width:100%;height:180px;object-fit:cover}.product:first-child img{height:315px}.product-body{padding:20px;display:flex;flex:1;flex-direction:column}.product-body p{font-size:14px;margin-bottom:18px}.product .btn{margin-top:auto;align-self:flex-start}
    .metrics{background:#e6efec;border-top:1px solid #cbd9d5;border-bottom:1px solid #cbd9d5}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.metric{padding:18px 25px;border-left:1px solid #bfcec9}.metric:first-child{border-left:0}.metric strong{display:block;color:var(--teal-dark);font-size:41px;line-height:1.1}.metric span{font-size:14px;color:#455658}
    .verify-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
    .verify-list{border-top:2px solid var(--teal)}.verify-item{display:grid;grid-template-columns:150px 1fr;border-bottom:1px solid var(--border);padding:15px 0;gap:18px}.verify-item b{color:var(--ink)}.verify-item span{font-size:14px}
    .flow{background:#fff}.flow-row{display:grid;grid-template-columns:repeat(6,1fr);margin-top:42px}.flow-step{padding:0 18px 0 0;position:relative}.flow-step:after{content:"";height:1px;background:var(--border);position:absolute;left:35px;right:-1px;top:17px}.flow-step:last-child:after{display:none}.step-no{position:relative;z-index:1;width:35px;height:35px;border-radius:50%;background:var(--teal);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:800;margin-bottom:18px}.flow-step h3{font-size:17px}.flow-step p{font-size:13px;line-height:1.65}
    .security{background:var(--teal-dark);color:#cfe2de}.security h2{color:#fff}.security .section-intro p{color:#cfe2de}.security-grid{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid rgba(255,255,255,.25);border-left:1px solid rgba(255,255,255,.25)}.security-item{padding:22px;border-right:1px solid rgba(255,255,255,.25);border-bottom:1px solid rgba(255,255,255,.25)}.security-item b{color:#fff;display:block;margin-bottom:7px}.security-item span{font-size:13px;line-height:1.65;display:block}
    .cases{background:#172322;color:#d4e1dd}.cases h2{color:#fff}.case-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}.case-main{min-height:390px;position:relative;overflow:hidden}.case-main img{width:100%;height:100%;object-fit:cover;opacity:.55}.case-caption{position:absolute;left:0;bottom:0;right:0;padding:30px;background:linear-gradient(transparent,rgba(4,17,16,.95))}.case-caption h3{color:#fff;font-size:27px}.case-caption p{margin:0;color:#d7e4e0}.case-side{display:flex;flex-direction:column;gap:18px}.case-small{flex:1;padding:25px;background:#24403d;border-left:3px solid var(--signal)}.case-small h3{color:#fff}.case-small p{font-size:14px;margin:0}.case-id{color:#efae81;font-size:12px;font-weight:800;letter-spacing:.1em}
    .story-layout{display:grid;grid-template-columns:4fr 8fr;gap:58px}.story-quote{font-size:25px;line-height:1.65;color:var(--ink);font-weight:700;border-top:3px solid var(--signal);padding-top:20px}.story-line{border-left:1px solid var(--border)}.story-row{padding:0 0 26px 26px;position:relative}.story-row:before{content:"";position:absolute;width:11px;height:11px;border-radius:50%;background:var(--signal);left:-6px;top:8px}.story-row b{color:var(--teal);font-size:13px}.story-row p{font-size:14px;margin:5px 0 0}
    .statbar{background:var(--signal);color:#fff}.statbar .wrap{display:grid;grid-template-columns:repeat(4,1fr)}.stat-item{padding:26px 28px;border-left:1px solid rgba(255,255,255,.35)}.stat-item:first-child{border:0}.stat-item strong{font-size:31px;display:block;line-height:1.2}.stat-item span{font-size:13px}
    .review-box{background:#fff;border:1px solid var(--border);display:grid;grid-template-columns:180px 1fr}.review-box img{height:100%;width:100%;object-fit:cover}.review-content{padding:31px}.review-content blockquote{margin:0;color:var(--ink);font-size:22px;line-height:1.65;font-weight:700}.review-meta{margin-top:20px;color:var(--muted);font-size:14px}.review-meta b{color:var(--teal)}
    .news-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:22px}.news-list{background:#fff;border:1px solid var(--border)}.news-item{padding:20px 24px;border-bottom:1px solid var(--border);display:grid;grid-template-columns:105px 1fr;gap:18px}.news-item:last-child{border-bottom:0}.news-date{font-size:13px;color:var(--signal);font-weight:800}.news-item h3{font-size:18px;margin:0 0 5px}.news-item p{font-size:13px;margin:0}.news-feature{background:#e8f0ed;padding:29px;border-top:4px solid var(--teal)}.news-feature p{font-size:14px}.news-feature .btn{margin-top:10px}
    .partners{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:#fff}.partner-row{display:flex;flex-wrap:wrap;gap:10px}.partner{border:1px solid var(--border);padding:13px 20px;font-weight:750;color:#526264;background:#fafcfb}
    .faq-wrap{max-width:920px;margin:auto}.accordion{background:transparent}.accordion-item{border:1px solid var(--border);margin-bottom:10px;background:#fff}.accordion-title{border:0;color:var(--ink);font-weight:750;padding:18px 53px 18px 20px;line-height:1.55}.accordion-title:hover,.accordion-title:focus{background:#f0f6f4;color:var(--teal)}.accordion-title:before{color:var(--teal);font-size:22px;right:20px}.accordion-content{border:0;border-top:1px solid var(--border);padding:17px 20px;color:var(--body);font-size:15px;line-height:1.8}
    .assurance{background:#e9f0ee;border-top:1px solid var(--border)}.assurance-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.assurance-item{display:flex;gap:12px;align-items:flex-start}.assurance-icon{width:39px;height:39px;flex:0 0 39px;display:grid;place-items:center;background:var(--teal);color:#fff;font-weight:800}.assurance-item b{color:var(--ink);display:block}.assurance-item span{font-size:13px;line-height:1.55}
    .contact{background:#fff}.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}.contact-copy{background:var(--teal-dark);padding:37px;color:#d8e8e4}.contact-copy h2{color:#fff}.contact-copy p{font-size:15px}.contact-detail{margin-top:28px;border-top:1px solid rgba(255,255,255,.25);padding-top:20px}.contact-detail b{display:block;color:#fff}.contact-detail span{font-size:14px}.form-box{border:1px solid var(--border);padding:30px;background:#fbfcfb}.form-box label{color:var(--ink);font-size:14px;font-weight:700;margin-bottom:6px}.form-box input,.form-box select,.form-box textarea{margin:0 0 16px;border:1px solid #c9d4d0;border-radius:3px;box-shadow:none;min-height:46px;background:#fff;color:var(--ink)}.form-box textarea{min-height:104px;resize:vertical}.form-box input:focus,.form-box select:focus,.form-box textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(14,98,92,.13)}.form-message{display:none;margin-top:14px;padding:11px 13px;background:#e3f1eb;color:var(--success);font-size:14px;font-weight:700}
    footer{background:#1d2726;color:#b9c8c4;padding:54px 0 22px}footer .brand{margin-bottom:12px}.footer-grid{display:grid;grid-template-columns:1.3fr .8fr .8fr;gap:45px}.footer-grid h3{font-size:15px;color:#fff;margin-bottom:12px}.footer-grid p,.footer-grid li{font-size:13px;margin-bottom:5px}.footer-grid ul{padding:0;list-style:none}.footer-grid a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.18);margin-top:35px;padding-top:18px;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    .off-canvas{background:var(--teal-dark);color:#fff;padding:25px}.off-canvas .brand{margin-bottom:22px}.mobile-menu{list-style:none;padding:0;margin:0}.mobile-menu a{display:block;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.15);font-weight:700}.close-button{color:#fff}
    @media(max-width:1100px){.menu a{padding-left:8px;padding-right:8px;font-size:13px}.matrix{grid-template-columns:1fr 1fr}.capability:nth-child(3){grid-row:auto}.products{grid-template-columns:1fr 1fr}.product:first-child{grid-row:auto}.product:first-child img{height:230px}.security-grid{grid-template-columns:repeat(3,1fr)}}
    @media(max-width:820px){.top-tools,.nav-contact{display:none}.menu{display:none}.mobile-trigger{display:block}.nav-inner{min-height:57px}.intro-grid,.verify-grid,.story-layout,.contact-grid,.news-layout{grid-template-columns:1fr;gap:30px}.flow-row{grid-template-columns:repeat(3,1fr);row-gap:24px}.case-grid{grid-template-columns:1fr}.case-main{min-height:340px}.case-side{display:grid;grid-template-columns:1fr 1fr}.metric-grid{grid-template-columns:1fr 1fr}.metric:nth-child(3){border-left:0}.review-box{grid-template-columns:130px 1fr}.footer-grid{grid-template-columns:1fr 1fr}.hero h1{font-size:41px}.hero{height:620px}.assurance-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:520px){.wrap{width:min(calc(100% - 40px),var(--container))}.section{padding:57px 0}h2{font-size:29px}.topbar .wrap{min-height:40px}.sub-brand{font-size:11px}.brand{font-size:16px}.brand-mark{width:23px;height:23px}.hero{height:650px;min-height:620px}.hero-content{padding:44px 0 92px}.hero h1{font-size:31px}.hero p{font-size:15px;line-height:1.78}.hero-actions .btn{width:100%}.hero-bottom .wrap{min-height:61px}.slide-status span{display:none}.matrix,.products{grid-template-columns:1fr}.capability{min-height:190px}.products .product img,.product:first-child img{height:190px}.metric{padding:16px;border-bottom:1px solid #bfcec9}.metric strong{font-size:31px}.verify-item{grid-template-columns:1fr;gap:3px}.flow-row{grid-template-columns:1fr;margin-top:25px}.flow-step{padding-left:51px;padding-bottom:15px}.flow-step:after{width:1px;height:100%;left:17px;top:35px;right:auto}.step-no{position:absolute;left:0}.security-grid{grid-template-columns:1fr 1fr}.case-side{grid-template-columns:1fr}.case-main{min-height:330px}.case-caption{padding:20px}.case-caption h3{font-size:21px}.statbar .wrap{grid-template-columns:1fr 1fr}.stat-item{padding:18px;border-bottom:1px solid rgba(255,255,255,.35)}.review-box{grid-template-columns:1fr}.review-box img{height:180px}.news-item{grid-template-columns:1fr;gap:4px}.footer-grid{grid-template-columns:1fr;gap:22px}.assurance-grid{grid-template-columns:1fr}.contact-copy,.form-box{padding:24px}.hero-bottom{position:absolute}.scene-strip .wrap{width:100%;padding-left:20px;padding-right:20px}.scene-title{display:none}}
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}

/* roulang page: category1 */
:root{
 --ink:#20272b;--body:#4b565a;--paper:#f6f7f4;--surface:#fff;
 --teal:#0e625c;--teal-dark:#093f3c;--signal:#d9783a;--mist:#dce5e1;
 --border:#d5ddda;--success:#327a5c;--muted:#718083;
 --shadow:0 12px 32px rgba(25,43,42,.08);--radius:7px;--container:1240px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--body);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}
h1,h2,h3,h4,p{margin-top:0}h1,h2,h3,h4{color:var(--ink);line-height:1.28;font-weight:800}
h1{font-size:48px;margin-bottom:20px}h2{font-size:38px;margin-bottom:17px}h3{font-size:21px;margin-bottom:10px}
a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,select,textarea{font:inherit}
button{cursor:pointer}.wrap{width:min(var(--container),calc(100% - 64px));margin:0 auto}
.section{padding:84px 0}.section-soft{background:#edf2ef}.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.06em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--signal)}
.section-intro{max-width:770px;margin-bottom:34px}.section-intro p{margin-bottom:0}
.btn{min-height:46px;padding:10px 21px;border:1px solid transparent;border-radius:4px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;transition:.2s ease}
.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn:focus-visible,.menu a:focus-visible,.faq-q:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(217,120,58,.45);outline-offset:3px}
.btn-main{background:var(--teal);color:#fff}.btn-main:hover{background:var(--teal-dark);color:#fff}.btn-outline{border-color:var(--teal);color:var(--teal);background:transparent}.btn-outline:hover{background:var(--teal);color:#fff}
.topbar{background:var(--teal-dark);color:#dbe8e4;font-size:13px}.topbar .wrap{min-height:40px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brandline{display:flex;align-items:center;gap:13px}.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;letter-spacing:.04em}.brand-mark{width:27px;height:27px;border:2px solid var(--signal);position:relative;border-radius:3px}.brand-mark:after{content:"";position:absolute;left:5px;right:5px;top:11px;height:2px;background:var(--signal);box-shadow:0 -6px 0 rgba(255,255,255,.8),0 6px 0 rgba(255,255,255,.8)}.sub-brand{color:#a9c5c0;border-left:1px solid rgba(255,255,255,.22);padding-left:13px}.top-tools{display:flex;align-items:center;gap:22px}.top-tools a:hover{color:#fff}
.mainnav{background:rgba(255,255,255,.98);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40}.nav-inner{min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:18px}.menu{display:flex;align-items:center;margin:0;gap:2px;list-style:none}.menu a{display:block;padding:18px 12px;color:#3c484b;font-size:14px;font-weight:650;border-bottom:3px solid transparent;transition:.2s}.menu a:hover,.menu a.active{color:var(--teal);border-bottom-color:var(--signal)}.nav-contact{font-size:14px;white-space:nowrap}.mobile-trigger{display:none;border:0;background:transparent;color:var(--teal);font-size:24px;min-width:44px;min-height:44px}
.page-hero{position:relative;min-height:470px;display:flex;align-items:center;color:#fff;background:#163f3b url('/assets/images/backpic/back-4.webp') center/cover no-repeat}.page-hero:before{content:"";position:absolute;inset:0;background:rgba(7,38,36,.78)}.page-hero .wrap{position:relative;z-index:1}.page-hero h1{max-width:780px;color:#fff}.page-hero p{max-width:760px;color:#e0eeeb;font-size:18px}.hero-label{color:#efaa7d}.hero-label:before{background:#efaa7d}.hero-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}.hero-meta span{padding:6px 11px;border:1px solid rgba(255,255,255,.35);font-size:13px;color:#e0eeeb}
.split{display:grid;grid-template-columns:4fr 8fr;gap:70px;align-items:start}.split-copy{padding-top:12px}.scene-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:25px}.scene-tags span{padding:8px 12px;background:var(--surface);border:1px solid var(--border);color:var(--teal);font-weight:700;font-size:14px}
.image-panel{position:relative}.image-panel img{width:100%;height:330px;object-fit:cover}.image-caption{position:absolute;bottom:0;left:0;right:0;padding:16px 20px;background:rgba(9,63,60,.9);color:#fff;font-size:14px}
.capability-list{border-top:2px solid var(--teal)}.capability-row{display:grid;grid-template-columns:70px 1.1fr 1.7fr 130px;gap:22px;align-items:center;padding:23px 0;border-bottom:1px solid var(--border)}.capability-row:hover{background:rgba(220,229,225,.35)}.number{font-size:25px;font-weight:800;color:var(--signal)}.capability-row h3{margin:0;font-size:19px}.capability-row p{margin:0;font-size:14px}.result{color:var(--teal);font-weight:800;font-size:14px}.link-more{display:inline-flex;color:var(--teal);font-weight:800;margin-top:24px;border-bottom:1px solid var(--signal);padding-bottom:3px}
.process{background:var(--teal-dark);color:#dcebe7}.process h2,.process h3{color:#fff}.process .eyebrow{color:#e9a77c}.process .eyebrow:before{background:#e9a77c}.process-grid{display:grid;grid-template-columns:repeat(5,1fr);margin-top:42px;border-top:1px solid rgba(255,255,255,.28)}.process-step{padding:22px 20px 10px;border-right:1px solid rgba(255,255,255,.2);min-height:160px}.process-step:first-child{border-left:1px solid rgba(255,255,255,.2)}.process-step b{color:var(--signal);font-size:13px}.process-step h3{font-size:18px;margin:10px 0 8px}.process-step p{font-size:14px;color:#c8ddd8;margin:0}
.verify-layout{display:grid;grid-template-columns:1fr 1.25fr;gap:56px;align-items:start}.verify-box{border-top:2px solid var(--teal)}.verify-item{display:grid;grid-template-columns:150px 1fr;gap:20px;padding:15px 0;border-bottom:1px solid var(--border)}.verify-item b{color:var(--ink)}.verify-item span{font-size:14px}.signal-note{padding:22px;background:var(--mist);border-left:4px solid var(--signal)}.signal-note strong{display:block;color:var(--ink);margin-bottom:6px}
.case-section{background:#102f2d;color:#d7e8e3}.case-section h2,.case-section h3{color:#fff}.case-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:20px}.case-feature{min-height:320px;position:relative;background:url('/assets/images/coverpic/cover-9.webp') center/cover}.case-feature:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(5,30,28,.9),rgba(5,30,28,.12))}.case-content{position:absolute;z-index:1;left:28px;right:28px;bottom:25px}.case-content p{font-size:14px}.case-list{border-left:1px solid rgba(255,255,255,.28)}.case-item{padding:18px 24px;border-bottom:1px solid rgba(255,255,255,.25)}.case-item small{color:#efaa7d}.case-item h3{font-size:18px;margin:7px 0}.case-item p{font-size:14px;margin:0;color:#c7dcd7}
.faq-list{max-width:900px;border-top:2px solid var(--teal)}.faq-item{border-bottom:1px solid var(--border)}.faq-q{width:100%;min-height:60px;padding:17px 0;border:0;background:transparent;display:flex;justify-content:space-between;text-align:left;color:var(--ink);font-weight:800}.faq-q span:last-child{color:var(--signal);font-size:23px}.faq-a{display:none;padding:0 40px 18px 0;font-size:15px}.faq-item.open .faq-a{display:block}.faq-item.open .faq-q span:last-child{transform:rotate(45deg)}
.cta{background:#e7efeb;padding:66px 0}.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:start}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-field{display:flex;flex-direction:column;gap:6px}.form-field.full{grid-column:1/-1}.form-field label{font-size:14px;font-weight:700;color:var(--ink)}input,select,textarea{width:100%;border:1px solid var(--border);background:#fff;border-radius:4px;padding:10px 12px;color:var(--ink);min-height:46px}textarea{min-height:112px;resize:vertical}.form-message{display:none;margin-top:12px;color:var(--success);font-weight:700}.form-error{display:none;margin-top:10px;color:#a7472c;font-size:14px}
footer{background:var(--teal-dark);color:#bfd4cf;padding:55px 0 20px}footer .brand{margin-bottom:16px}footer p{font-size:14px;max-width:370px}footer h3{color:#fff;font-size:16px;margin-bottom:14px}footer ul{list-style:none;padding:0;margin:0;font-size:14px}footer li{margin-bottom:7px}footer a:hover{color:#fff}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.2);padding-top:18px;margin-top:40px;font-size:13px;color:#9dbab4}
@media(max-width:1024px){.menu a{padding-left:7px;padding-right:7px;font-size:13px}.nav-contact{display:none}.split,.verify-layout{gap:35px}.capability-row{grid-template-columns:55px 1fr 1.4fr 105px}}
@media(max-width:768px){.wrap{width:min(100% - 40px,var(--container))}.topbar{display:none}.mainnav{position:sticky}.nav-inner{min-height:62px}.nav-inner>.sub-brand,.menu{display:none}.mobile-trigger{display:block}.nav-inner:before{content:"汽车数据平台软件";font-weight:800;color:var(--teal);font-size:16px}.page-hero{min-height:430px}.page-hero h1{font-size:38px}.section{padding:64px 0}.split,.verify-layout,.cta-grid,.case-layout{grid-template-columns:1fr;gap:30px}.capability-row{grid-template-columns:48px 1fr;gap:8px 15px}.capability-row p{grid-column:2}.result{grid-column:2}.process-grid{grid-template-columns:1fr;margin-top:28px}.process-step{min-height:auto;border-left:1px solid rgba(255,255,255,.2);border-bottom:1px solid rgba(255,255,255,.2);border-right:1px solid rgba(255,255,255,.2)}.image-panel img{height:280px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:520px){h2{font-size:30px}h1{font-size:32px}.section{padding:52px 0}.page-hero p{font-size:16px}.form-grid{grid-template-columns:1fr}.form-field.full{grid-column:auto}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;gap:6px;margin-top:28px}.hero-meta span{font-size:12px}.case-feature{min-height:280px}.verify-item{grid-template-columns:1fr;gap:3px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category2 */
:root{
--ink:#20272b;--body:#4b565a;--paper:#f6f7f4;--surface:#fff;--teal:#0e625c;
--teal-dark:#093f3c;--signal:#d9783a;--mist:#dce5e1;--border:#d5ddda;
--success:#327a5c;--muted:#718083;--shadow:0 12px 32px rgba(25,43,42,.08);
--radius:7px;--container:1240px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--body);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}
a{color:inherit;text-decoration:none} img{max-width:100%;display:block} button,input,select,textarea{font:inherit}
button{cursor:pointer}.wrap{width:min(var(--container),calc(100% - 64px));margin:0 auto}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;margin-top:0} h1{font-size:48px;margin-bottom:22px} h2{font-size:36px;margin-bottom:16px} h3{font-size:21px;margin-bottom:10px}
p{margin:0 0 18px}.section{padding:84px 0}.section-intro{max-width:780px;margin-bottom:38px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--teal);font-size:13px;font-weight:700;letter-spacing:.08em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--signal)}
.btn{min-height:46px;padding:10px 21px;border:1px solid transparent;border-radius:4px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;transition:.2s ease}
.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn:focus-visible,.menu a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(217,120,58,.5);outline-offset:3px}
.btn-main{background:var(--teal);color:#fff}.btn-main:hover{background:var(--teal-dark);color:#fff}.btn-outline{border-color:var(--teal);color:var(--teal);background:transparent}.btn-outline:hover{background:var(--teal);color:#fff}
.topbar{background:var(--teal-dark);color:#dbe8e4;font-size:13px}.topbar .wrap{min-height:40px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brandline{display:flex;align-items:center;gap:13px}.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;letter-spacing:.04em}.brand-mark{width:27px;height:27px;border:2px solid var(--signal);position:relative;border-radius:3px}.brand-mark:after{content:"";position:absolute;left:5px;right:5px;top:11px;height:2px;background:var(--signal);box-shadow:0 -6px 0 rgba(255,255,255,.8),0 6px 0 rgba(255,255,255,.8)}.sub-brand{color:#a9c5c0;border-left:1px solid rgba(255,255,255,.22);padding-left:13px}.top-tools a{color:#fff;font-weight:700}
.mainnav{background:rgba(255,255,255,.98);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40}.nav-inner{min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:18px}.menu{display:flex;align-items:center;margin:0;gap:2px;list-style:none}.menu a{display:block;padding:18px 12px;color:#3c484b;font-size:14px;font-weight:650;border-bottom:3px solid transparent;transition:.2s}.menu a:hover,.menu a.active{color:var(--teal);border-bottom-color:var(--signal)}.nav-contact{font-size:14px;white-space:nowrap}.mobile-trigger{display:none;border:0;background:transparent;color:var(--teal);font-size:24px;min-width:44px;min-height:44px}
.page-hero{background:var(--teal-dark);color:#e5f0ed;padding:82px 0 76px;position:relative;overflow:hidden}.page-hero:after{content:"";position:absolute;right:-80px;bottom:-130px;width:430px;height:430px;border:1px solid rgba(217,120,58,.38);transform:rotate(28deg)}.page-hero h1{color:#fff;max-width:780px}.page-hero p{max-width:760px;font-size:18px;color:#d2e3df}.hero-checks{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 30px}.hero-checks span{border:1px solid rgba(255,255,255,.28);padding:8px 13px;color:#e5f0ed;font-size:14px}.hero-checks span:before{content:"✓";color:#f0a477;font-weight:800;margin-right:7px}
.split{display:grid;grid-template-columns:5fr 7fr;gap:68px;align-items:center}.image-frame{border-left:7px solid var(--signal);background:var(--mist);padding:12px}.image-frame img{width:100%;height:360px;object-fit:cover}.label-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}.tag{display:inline-block;padding:5px 10px;background:rgba(14,98,92,.1);color:var(--teal);font-size:13px;font-weight:700}
.scenario-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--teal);border-bottom:1px solid var(--border)}.scenario{padding:25px 22px;border-right:1px solid var(--border)}.scenario:last-child{border-right:0}.scenario b{display:block;color:var(--ink);font-size:18px;margin-bottom:7px}.scenario small{color:var(--muted)}
.capability-list{border-top:2px solid var(--teal)}.capability{display:grid;grid-template-columns:72px 230px 1fr 120px;gap:20px;align-items:center;border-bottom:1px solid var(--border);padding:22px 0}.capability-no{font-size:28px;color:var(--signal);font-weight:800}.capability h3{margin:0}.capability p{margin:0;font-size:14px}.capability strong{color:var(--teal);font-size:14px;text-align:right}
.flow{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--border);margin-top:38px}.flow-item{padding:23px 20px 0;border-right:1px solid var(--border);position:relative}.flow-item:before{content:"";display:block;width:13px;height:13px;border-radius:50%;background:var(--signal);margin-top:-30px;margin-bottom:18px}.flow-item:last-child{border-right:0}.flow-item b{color:var(--teal);font-size:14px}.flow-item h3{font-size:18px;margin:8px 0}.flow-item p{font-size:14px}
.verify{background:#eaf0ed}.verify-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px}.spec-table{border-top:2px solid var(--teal);background:#fff}.spec-row{display:grid;grid-template-columns:180px 1fr;border-bottom:1px solid var(--border);padding:16px 20px;gap:20px}.spec-row b{color:var(--ink)}.spec-row span{font-size:14px}
.case-section{background:var(--teal-dark);color:#cfe2de}.case-section h2{color:#fff}.case-list{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.case-item{border:1px solid rgba(255,255,255,.25);padding:28px;min-height:180px}.case-item:first-child{background:#124f4a;min-height:285px}.case-item h3{color:#fff}.case-item p{font-size:14px}.case-tag{color:#f0a477;font-size:13px;font-weight:700}
.faq-list{border-top:2px solid var(--teal);max-width:900px}.faq-item{border-bottom:1px solid var(--border)}.faq-question{width:100%;padding:19px 4px;text-align:left;background:transparent;border:0;color:var(--ink);font-weight:750;display:flex;justify-content:space-between;gap:20px}.faq-question:after{content:"＋";color:var(--teal);font-size:22px}.faq-question[aria-expanded=true]:after{content:"－"}.faq-answer{display:none;padding:0 42px 18px 4px;font-size:15px}.faq-answer.open{display:block}
.cta{background:var(--mist);padding:76px 0}.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:55px}.form-box{background:#fff;padding:28px;border-top:4px solid var(--signal);box-shadow:var(--shadow)}label{display:block;color:var(--ink);font-weight:700;font-size:14px;margin-bottom:6px}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:4px;padding:10px 12px;min-height:46px;background:#fff;margin-bottom:15px;color:var(--ink)}textarea{min-height:100px;resize:vertical}.form-error{display:none;color:#a6402b;font-size:13px;margin:-8px 0 12px}.form-success{display:none;color:var(--success);font-weight:700;margin-top:13px}
footer{background:#172a2a;color:#b8ceca;padding:54px 0 20px}.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr;gap:55px}.footer-grid .brand{margin-bottom:15px}.footer-grid p{font-size:14px;max-width:430px}.footer-grid h3{color:#fff;font-size:16px}.footer-grid ul{list-style:none;padding:0;margin:0;font-size:14px}.footer-grid li{margin-bottom:7px}.footer-grid a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.16);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;font-size:13px;color:#91aaa5}
@media(max-width:1100px){.menu a{padding-left:7px;padding-right:7px;font-size:13px}.nav-contact{display:none}.wrap{width:min(var(--container),calc(100% - 44px))}.capability{grid-template-columns:55px 190px 1fr 100px}}
@media(max-width:768px){.top-tools{display:none}.topbar .wrap{min-height:34px}.mainnav{top:0}.nav-inner{min-height:60px}.mainnav .sub-brand,.menu{display:none}.mobile-trigger{display:block}.section{padding:62px 0}h1{font-size:34px}h2{font-size:29px}.page-hero{padding:60px 0}.split,.verify-grid,.cta-grid{grid-template-columns:1fr;gap:30px}.image-frame img{height:280px}.scenario-strip{grid-template-columns:repeat(2,1fr)}.scenario:nth-child(2){border-right:0}.scenario:nth-child(-n+2){border-bottom:1px solid var(--border)}.capability{grid-template-columns:48px 1fr;gap:8px 15px}.capability p{grid-column:2}.capability strong{grid-column:2;text-align:left}.flow{grid-template-columns:1fr;border-left:1px solid var(--border);margin-left:8px}.flow-item{border-right:0;border-bottom:1px solid var(--border);padding:18px 18px 18px 28px}.flow-item:before{position:absolute;left:-7px;top:23px;margin:0}.case-list{grid-template-columns:1fr}.case-item:first-child{min-height:220px}.footer-grid{grid-template-columns:1fr;gap:25px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}}
@media(max-width:520px){.wrap{width:calc(100% - 40px)}.hero-checks{display:block}.hero-checks span{display:block;margin-bottom:9px}.scenario{padding:20px 14px}.spec-row{grid-template-columns:1fr;gap:3px}.form-box{padding:20px}.btn{width:100%}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category3 */
:root{
 --ink:#20272b;--body:#4b565a;--paper:#f6f7f4;--surface:#fff;
 --teal:#0e625c;--teal-dark:#093f3c;--signal:#d9783a;--mist:#dce5e1;
 --border:#d5ddda;--success:#327a5c;--muted:#718083;
 --shadow:0 12px 32px rgba(25,43,42,.08);--radius:7px;--container:1240px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--body);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}
h1,h2,h3,h4,p,ul,ol{margin-top:0}
h1,h2,h3,h4{color:var(--ink);line-height:1.3}
h1{font-size:clamp(32px,4vw,50px);margin-bottom:22px}
h2{font-size:clamp(28px,3.3vw,42px);margin-bottom:17px}
h3{font-size:21px;margin-bottom:10px}
p{margin-bottom:17px}
a{color:inherit;text-decoration:none}
a:hover{color:var(--teal)}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.wrap{width:min(var(--container),calc(100% - 64px));margin:0 auto}
.section{padding:84px 0}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--teal);font-size:13px;font-weight:700;letter-spacing:.08em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--signal)}
.section-intro{max-width:780px;margin-bottom:36px}
.section-intro p{margin-bottom:0}
.btn{min-height:46px;padding:10px 21px;border:1px solid transparent;border-radius:4px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;transition:.2s ease}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn:focus-visible,.menu a:focus-visible,.mobile-trigger:focus-visible,.accordion-button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(217,120,58,.45);outline-offset:3px}
.btn-main{background:var(--teal);color:#fff}.btn-main:hover{background:var(--teal-dark);color:#fff}
.btn-outline{border-color:var(--teal);color:var(--teal);background:transparent}.btn-outline:hover{background:var(--teal);color:#fff}
.btn-signal{background:var(--signal);color:#fff}.btn-signal:hover{background:#b95d27;color:#fff}
.topbar{background:var(--teal-dark);color:#dbe8e4;font-size:13px}
.topbar .wrap{min-height:39px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brandline{display:flex;align-items:center;gap:13px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;letter-spacing:.04em}
.brand:hover{color:#fff}
.brand-mark{width:27px;height:27px;border:2px solid var(--signal);position:relative;border-radius:3px}
.brand-mark:after{content:"";position:absolute;left:5px;right:5px;top:11px;height:2px;background:var(--signal);box-shadow:0 -6px 0 rgba(255,255,255,.8),0 6px 0 rgba(255,255,255,.8)}
.sub-brand{color:#a9c5c0;border-left:1px solid rgba(255,255,255,.22);padding-left:13px}
.top-tools{display:flex;align-items:center;gap:20px}.top-tools a{color:#fff}.top-tools a:hover{color:#efaa7d}
.mainnav{background:rgba(255,255,255,.98);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40}
.nav-inner{min-height:61px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.menu{display:flex;align-items:center;margin:0;gap:3px;list-style:none}
.menu a{display:block;padding:18px 12px;color:#3c484b;font-size:14px;font-weight:650;border-bottom:3px solid transparent;transition:.2s}
.menu a:hover,.menu a.active{color:var(--teal);border-bottom-color:var(--signal)}
.nav-contact{font-size:14px;white-space:nowrap}.mobile-trigger{display:none;border:0;background:transparent;color:var(--teal);font-size:24px;min-width:44px;min-height:44px}
.mobile-panel{display:none}
.page-hero{position:relative;min-height:440px;color:#fff;display:flex;align-items:center;background:#123b38 url('/assets/images/backpic/back-5.webp') center/cover no-repeat}
.page-hero:before{content:"";position:absolute;inset:0;background:rgba(7,38,36,.77)}
.page-hero .wrap{position:relative;z-index:1}
.page-hero .eyebrow{color:#f1ae82}.page-hero .eyebrow:before{background:#f1ae82}
.page-hero h1{color:#fff;max-width:790px;margin-top:16px}
.page-hero p{color:#e1efeb;max-width:760px;font-size:17px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-meta span,.tag{padding:5px 10px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);color:#e4f1ee;font-size:13px}
.split-layout{display:grid;grid-template-columns:1fr 1.18fr;gap:70px;align-items:center}
.image-frame{position:relative;background:var(--mist);padding:12px}
.image-frame img{width:100%;height:390px;object-fit:cover}
.image-note{position:absolute;left:28px;bottom:27px;background:var(--teal-dark);color:#fff;padding:12px 16px;font-size:13px}
.scene-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.scene-tags span{padding:8px 13px;border-left:3px solid var(--signal);background:#fff;color:var(--ink);font-weight:650}
.feature-list{border-top:2px solid var(--teal);margin-top:25px}
.feature-row{display:grid;grid-template-columns:42px 1fr 155px;gap:19px;align-items:center;padding:18px 0;border-bottom:1px solid var(--border)}
.feature-row strong{color:var(--teal);font-size:14px}.feature-row h3{margin:0;font-size:18px}.feature-row p{margin:3px 0 0;font-size:14px}.feature-row em{font-style:normal;color:var(--signal);font-size:13px;text-align:right}
.chain{background:#eaf0ed}.chain-grid{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--border);border-left:1px solid var(--border)}
.chain-item{padding:23px 20px;min-height:180px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);background:rgba(255,255,255,.45)}
.chain-item b{display:block;color:var(--signal);font-size:13px;margin-bottom:16px}.chain-item h3{font-size:18px}.chain-item p{font-size:14px;margin:0}
.verify-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px}
.verify-table{border-top:2px solid var(--teal);background:#fff}
.verify-line{display:grid;grid-template-columns:180px 1fr;gap:20px;padding:16px 20px;border-bottom:1px solid var(--border)}
.verify-line strong{color:var(--ink)}.verify-line span{font-size:14px}
.case-area{background:var(--teal-dark);color:#d8e8e4}
.case-area h2,.case-area h3{color:#fff}.case-area .eyebrow{color:#efaa7d}.case-area .eyebrow:before{background:#efaa7d}
.case-list{border-top:1px solid rgba(255,255,255,.25)}
.case-item{display:grid;grid-template-columns:90px 1fr 1.15fr;gap:28px;align-items:center;padding:24px 0;border-bottom:1px solid rgba(255,255,255,.2)}
.case-no{font-size:30px;color:var(--signal);font-weight:800}.case-item p{margin:0;color:#c9ddd8;font-size:14px}.case-item h3{margin:0 0 4px}
.faq-list{max-width:900px;border-top:2px solid var(--teal)}
.accordion-item{border-bottom:1px solid var(--border)}
.accordion-button{width:100%;min-height:62px;border:0;background:transparent;color:var(--ink);display:flex;align-items:center;justify-content:space-between;text-align:left;font-weight:700;padding:15px 4px}
.accordion-button span:last-child{font-size:24px;color:var(--teal);font-weight:400}
.accordion-content{display:none;padding:0 38px 19px 4px;color:var(--body);font-size:15px}.accordion-item.open .accordion-content{display:block}
.cta-band{background:var(--mist);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.cta-layout{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta-layout h2{margin-bottom:8px}.cta-layout p{margin:0}
footer{background:#172528;color:#b9cfca;padding:56px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.3fr .8fr .9fr;gap:70px}
footer .brand{margin-bottom:17px}footer p{max-width:440px;font-size:14px}footer h3{color:#fff;font-size:16px}footer ul{list-style:none;margin:0;padding:0;font-size:14px;line-height:2.1}footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.16);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:13px}
@media(max-width:1100px){.menu a{padding-left:7px;padding-right:7px;font-size:13px}.nav-inner>.sub-brand{display:none}.split-layout,.verify-layout{gap:38px}.wrap{width:min(var(--container),calc(100% - 48px))}}
@media(max-width:768px){.topbar .wrap{min-height:48px}.top-tools span{display:none}.mainnav{position:sticky}.menu,.nav-contact{display:none}.mobile-trigger{display:block}.nav-inner{min-height:60px}.mobile-panel{display:block;position:fixed;top:108px;right:-100%;width:min(330px,88vw);height:calc(100vh - 108px);background:#fff;z-index:60;padding:22px;box-shadow:-10px 0 28px rgba(0,0,0,.12);transition:right .25s ease}.mobile-panel.is-open{right:0}.mobile-panel ul{list-style:none;margin:0;padding:0}.mobile-panel li{border-bottom:1px solid var(--border)}.mobile-panel a{display:block;padding:14px 4px;color:var(--ink);font-weight:650}.mobile-panel a.active{color:var(--teal)}.page-hero{min-height:430px}.section{padding:64px 0}.split-layout,.verify-layout{grid-template-columns:1fr}.image-frame img{height:300px}.chain-grid{grid-template-columns:repeat(2,1fr)}.case-item{grid-template-columns:60px 1fr}.case-item p{grid-column:2}.cta-layout{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr;gap:35px}}
@media(max-width:520px){.wrap{width:calc(100% - 40px)}.brand{font-size:15px}.brand-mark{width:23px;height:23px}.brandline .sub-brand{display:none}.mobile-panel{top:108px}.page-hero h1{font-size:34px}.page-hero p{font-size:16px}.feature-row{grid-template-columns:32px 1fr;gap:12px}.feature-row em{grid-column:2;text-align:left}.chain-grid{grid-template-columns:1fr}.chain-item{min-height:0}.verify-line{grid-template-columns:1fr;gap:3px;padding:14px}.case-item{grid-template-columns:45px 1fr;gap:14px}.case-item p{grid-column:2}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:7px}.section-intro{margin-bottom:27px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* roulang page: category4 */
:root{
 --ink:#20272b;--body:#4b565a;--paper:#f6f7f4;--surface:#fff;
 --teal:#0e625c;--teal-dark:#093f3c;--signal:#d9783a;--mist:#dce5e1;
 --border:#d5ddda;--success:#327a5c;--muted:#718083;
 --shadow:0 12px 32px rgba(25,43,42,.08);--radius:7px;--container:1240px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--body);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;font-weight:800}
h2{font-size:38px;margin:12px 0 18px}
h3{font-size:21px;margin:0 0 12px}
p{margin-bottom:16px}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(217,120,58,.55);outline-offset:3px}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.wrap{width:min(var(--container),calc(100% - 64px));margin:0 auto}
.section{padding:86px 0}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.06em}
.eyebrow:before{content:"";width:26px;height:2px;background:var(--signal)}
.section-intro{max-width:790px;margin-bottom:36px}
.section-intro p{margin-bottom:0}
.btn{min-height:46px;padding:10px 21px;border:1px solid transparent;border-radius:4px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:750;transition:.2s ease}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-main{background:var(--teal);color:#fff}
.btn-main:hover{background:var(--teal-dark);color:#fff}
.btn-outline{border-color:var(--teal);color:var(--teal);background:transparent}
.btn-outline:hover{background:var(--teal);color:#fff}
.btn-signal{background:var(--signal);color:#fff}
.btn-signal:hover{background:#b95d27;color:#fff}
.topbar{background:var(--teal-dark);color:#dbe8e4;font-size:13px}
.topbar .wrap{min-height:40px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brandline{display:flex;align-items:center;gap:13px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;letter-spacing:.03em}
.brand-mark{width:27px;height:27px;border:2px solid var(--signal);position:relative;border-radius:3px}
.brand-mark:after{content:"";position:absolute;left:5px;right:5px;top:11px;height:2px;background:var(--signal);box-shadow:0 -6px 0 rgba(255,255,255,.8),0 6px 0 rgba(255,255,255,.8)}
.sub-brand{color:#a9c5c0;border-left:1px solid rgba(255,255,255,.22);padding-left:13px}
.top-tools{display:flex;align-items:center;gap:22px}
.top-tools a{color:#fff}
.mainnav{background:rgba(255,255,255,.98);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40}
.nav-inner{min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.menu{display:flex;align-items:center;margin:0;gap:2px;list-style:none}
.menu a{display:block;padding:18px 12px;color:#3c484b;font-size:14px;font-weight:700;border-bottom:3px solid transparent;transition:.2s}
.menu a:hover,.menu a.active{color:var(--teal);border-bottom-color:var(--signal)}
.nav-contact{font-size:14px;white-space:nowrap}
.mobile-trigger{display:none;border:0;background:transparent;color:var(--teal);font-size:24px;min-width:44px;min-height:44px}
.page-hero{background:var(--teal-dark);color:#fff;position:relative;overflow:hidden}
.page-hero:after{content:"";position:absolute;right:-90px;top:-130px;width:430px;height:430px;border:1px solid rgba(218,236,231,.2);transform:rotate(28deg)}
.page-hero .wrap{min-height:430px;display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;position:relative;z-index:1}
.page-hero h1{color:#fff;font-size:48px;max-width:700px;margin:15px 0 20px}
.page-hero p{color:#d8e7e3;max-width:680px;font-size:17px}
.hero-image{height:300px;overflow:hidden;border-left:5px solid var(--signal)}
.hero-image img{width:100%;height:100%;object-fit:cover;opacity:.78}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:27px}
.split{display:grid;grid-template-columns:4fr 8fr;gap:72px;align-items:start}
.side-note{border-top:3px solid var(--teal);padding-top:18px}
.side-note strong{display:block;color:var(--ink);font-size:24px;margin-bottom:8px}
.side-note span{color:var(--muted);font-size:14px}
.data-band{background:#e8efec;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.band-item{padding:25px 24px;border-right:1px solid var(--border)}
.band-item:first-child{border-left:1px solid var(--border)}
.band-item b{display:block;color:var(--teal);font-size:30px;line-height:1.2}
.band-item span{font-size:14px;color:var(--body)}
.capability-list{border-top:2px solid var(--teal)}
.capability-row{display:grid;grid-template-columns:70px 1fr 260px;gap:25px;align-items:center;padding:24px 0;border-bottom:1px solid var(--border)}
.capability-no{color:var(--signal);font-size:25px;font-weight:800}
.capability-row h3{margin-bottom:5px}
.capability-row p{margin:0;font-size:14px}
.capability-meta{display:flex;flex-wrap:wrap;gap:7px;justify-content:flex-end}
.tag{display:inline-block;padding:4px 9px;background:rgba(14,98,92,.1);color:var(--teal);font-size:12px;font-weight:750}
.image-panel{background:#fff;border:1px solid var(--border);padding:9px}
.image-panel img{width:100%;height:300px;object-fit:cover}
.chain{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--border);border-left:1px solid var(--border)}
.chain-step{min-height:180px;padding:22px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);position:relative}
.chain-step b{color:var(--signal);font-size:14px}
.chain-step h3{margin-top:17px;font-size:18px}
.chain-step p{font-size:14px;margin:0}
.spec-section{background:#fff}
.spec-layout{display:grid;grid-template-columns:1fr 1.2fr;gap:58px;align-items:start}
.spec-list{border-top:2px solid var(--teal)}
.spec-item{display:grid;grid-template-columns:155px 1fr;gap:20px;padding:17px 0;border-bottom:1px solid var(--border)}
.spec-item strong{color:var(--ink)}
.spec-item span{font-size:14px}
.case-strip{background:var(--teal-dark);color:#d9e9e5}
.case-strip h2,.case-strip h3{color:#fff}
.case-intro{display:grid;grid-template-columns:1fr 2fr;gap:50px;align-items:start}
.case-list{border-top:1px solid rgba(255,255,255,.25)}
.case-item{display:grid;grid-template-columns:80px 1fr 180px;gap:20px;padding:22px 0;border-bottom:1px solid rgba(255,255,255,.25);align-items:center}
.case-item b{color:#efaa7d;font-size:19px}
.case-item h3{font-size:19px;margin-bottom:5px}
.case-item p{font-size:14px;margin:0;color:#cfe2de}
.case-item em{font-style:normal;color:#efaa7d;font-weight:700;font-size:14px}
.faq-list{border-top:2px solid var(--teal);max-width:920px}
.faq-item{border-bottom:1px solid var(--border)}
.faq-question{width:100%;padding:19px 4px;background:none;border:0;text-align:left;color:var(--ink);font-weight:750;display:flex;justify-content:space-between;gap:20px}
.faq-question span:last-child{color:var(--signal);font-size:22px}
.faq-answer{display:none;padding:0 35px 19px 4px;color:var(--body);font-size:15px}
.faq-item.open .faq-answer{display:block}
.contact-section{background:#edf2ef}
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:70px;align-items:start}
.contact-note{border-left:4px solid var(--signal);padding-left:20px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-field.full{grid-column:1/-1}
.form-field label{display:block;color:var(--ink);font-weight:700;font-size:14px;margin-bottom:6px}
.form-field input,.form-field select,.form-field textarea{width:100%;border:1px solid var(--border);background:#fff;border-radius:4px;padding:11px 13px;min-height:46px;color:var(--ink)}
.form-field textarea{min-height:120px;resize:vertical}
.form-message{display:none;margin-top:14px;padding:12px 14px;background:#dceee3;color:var(--success);font-size:14px}
.form-error{display:none;color:#a34725;font-size:13px;margin-top:8px}
footer{background:#202d2e;color:#b9cbc7;padding:54px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:60px}
footer .brand{margin-bottom:18px}
footer p{font-size:14px;max-width:390px}
footer h3{color:#fff;font-size:16px;margin-bottom:15px}
footer ul{margin:0;padding:0;list-style:none;font-size:14px}
footer li{margin-bottom:8px}
footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.16);margin-top:38px;padding-top:17px;display:flex;justify-content:space-between;gap:20px;font-size:13px}
@media(max-width:1100px){
 .menu a{padding-left:8px;padding-right:8px;font-size:13px}
 .nav-inner>.sub-brand{display:none}
 .page-hero .wrap{gap:35px}
}
@media(max-width:768px){
 .wrap{width:min(var(--container),calc(100% - 40px))}
 .topbar .wrap{min-height:48px}
 .top-tools span{display:none}
 .top-tools{margin-left:auto}
 .mainnav{position:sticky}
 .nav-inner{min-height:60px}
 .menu,.nav-contact{display:none}
 .mobile-trigger{display:block}
 .page-hero .wrap,.split,.spec-layout,.contact-grid,.case-intro{grid-template-columns:1fr;gap:32px}
 .page-hero .wrap{padding:58px 0 62px;min-height:0}
 .page-hero h1{font-size:36px}
 .hero-image{height:230px}
 .section{padding:62px 0}
 h2{font-size:31px}
 .band-grid{grid-template-columns:repeat(2,1fr)}
 .band-item{border-bottom:1px solid var(--border)}
 .capability-row{grid-template-columns:48px 1fr;gap:13px}
 .capability-meta{grid-column:2;justify-content:flex-start}
 .chain{grid-template-columns:1fr}
 .chain-step{min-height:0}
 .case-item{grid-template-columns:52px 1fr;gap:12px}
 .case-item em{grid-column:2}
 .footer-grid{grid-template-columns:1fr;gap:28px}
 .footer-bottom{display:block}
 .footer-bottom span{display:block;margin-bottom:8px}
}
@media(max-width:520px){
 .form-grid{grid-template-columns:1fr}
 .form-field.full{grid-column:auto}
 .band-grid{grid-template-columns:1fr 1fr}
 .band-item{padding:20px 13px}
 .band-item b{font-size:25px}
 .page-hero h1{font-size:32px}
 .btn{width:100%}
 .hero-actions{display:grid}
 .spec-item{grid-template-columns:1fr;gap:3px}
}
@media(prefers-reduced-motion:reduce){
 *,*:before,*:after{scroll-behavior:auto!important;transition:none!important}
}

/* roulang page: category5 */
:root{--ink:#20272b;--body:#4b565a;--paper:#f6f7f4;--surface:#fff;--teal:#0e625c;--teal-dark:#093f3c;--signal:#d9783a;--mist:#dce5e1;--border:#d5ddda;--success:#327a5c;--muted:#718083;--shadow:0 12px 32px rgba(25,43,42,.08);--radius:7px;--container:1240px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--body);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,select,textarea{font:inherit}button{cursor:pointer}.wrap{width:min(var(--container),calc(100% - 64px));margin:auto}.section{padding:84px 0}.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--teal);font-size:13px;font-weight:700;letter-spacing:.08em}.eyebrow:before{content:"";width:26px;height:2px;background:var(--signal)}h1,h2,h3{color:var(--ink);line-height:1.25;margin:0 0 18px;font-weight:800}h1{font-size:clamp(34px,4.5vw,56px)}h2{font-size:clamp(29px,3.5vw,43px)}h3{font-size:20px}p{margin:0 0 18px}.section-intro{max-width:780px;margin-bottom:38px}.section-intro p{margin-bottom:0}.btn{min-height:46px;padding:10px 21px;border:1px solid transparent;border-radius:4px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;transition:.2s ease}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn:focus-visible,.menu a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #efaa7d;outline-offset:3px}.btn-main{background:var(--teal);color:#fff}.btn-main:hover{background:var(--teal-dark);color:#fff}.btn-outline{border-color:var(--teal);color:var(--teal);background:transparent}.btn-outline:hover{background:var(--teal);color:#fff}.btn-signal{background:var(--signal);color:#fff}.btn-signal:hover{background:#b95d27;color:#fff}.topbar{background:var(--teal-dark);color:#dbe8e4;font-size:13px}.topbar .wrap{min-height:40px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brandline{display:flex;align-items:center;gap:13px}.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:800;letter-spacing:.04em}.brand-mark{width:27px;height:27px;border:2px solid var(--signal);position:relative;border-radius:3px}.brand-mark:after{content:"";position:absolute;left:5px;right:5px;top:11px;height:2px;background:var(--signal);box-shadow:0 -6px 0 rgba(255,255,255,.8),0 6px 0 rgba(255,255,255,.8)}.sub-brand{color:#a9c5c0;border-left:1px solid rgba(255,255,255,.22);padding-left:13px}.top-tools a{color:#fff;font-weight:700;margin-left:20px}.mainnav{background:rgba(255,255,255,.98);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40}.nav-inner{min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:18px}.menu{display:flex;align-items:center;margin:0;gap:2px;list-style:none}.menu a{display:block;padding:18px 12px;color:#3c484b;font-size:14px;font-weight:650;border-bottom:3px solid transparent;transition:.2s}.menu a:hover,.menu a.active{color:var(--teal);border-bottom-color:var(--signal)}.nav-contact{font-size:14px;white-space:nowrap}.mobile-trigger{display:none;border:0;background:transparent;color:var(--teal);font-size:24px;min-width:44px;min-height:44px}.page-hero{min-height:480px;position:relative;color:#fff;background:url('/assets/images/backpic/back-7.webp') center/cover no-repeat;display:flex;align-items:center}.page-hero:after{content:"";position:absolute;inset:0;background:rgba(6,35,33,.72)}.page-hero .wrap{position:relative;z-index:1}.page-hero h1{color:#fff;max-width:760px;margin-top:15px}.page-hero p{max-width:720px;color:#e1efeb;font-size:18px}.hero-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:27px}.tag{display:inline-block;padding:5px 10px;background:rgba(14,98,92,.1);color:var(--teal);font-size:12px;font-weight:700}.page-hero .tag{background:rgba(255,255,255,.13);color:#e8f3ef;border:1px solid rgba(255,255,255,.25)}.split{display:grid;grid-template-columns:5fr 7fr;gap:72px;align-items:center}.split-image{height:390px;overflow:hidden}.split-image img{width:100%;height:100%;object-fit:cover}.scene-band{border-top:1px solid var(--border);border-bottom:1px solid var(--border);display:flex;flex-wrap:wrap}.scene-band span{padding:13px 22px;border-right:1px solid var(--border);color:var(--ink);font-weight:700}.number-list{border-top:2px solid var(--teal)}.number-item{display:grid;grid-template-columns:74px 1fr 220px;gap:22px;padding:24px 0;border-bottom:1px solid var(--border);align-items:start}.number-item strong{font-size:28px;color:var(--signal);line-height:1}.number-item h3{margin-bottom:7px}.number-item p{font-size:14px;margin:0}.number-item .tag{margin:0;text-align:left;background:var(--mist)}.chain{display:grid;grid-template-columns:repeat(5,1fr);border-left:1px solid var(--border);margin-top:35px}.chain-item{padding:25px 20px;min-height:165px;border-right:1px solid var(--border);border-top:1px solid var(--border);border-bottom:1px solid var(--border);position:relative}.chain-item:not(:last-child):after{content:"→";position:absolute;right:-11px;top:58px;background:var(--paper);color:var(--signal);font-size:20px;padding:0 3px;z-index:2}.chain-item b{display:block;color:var(--teal);font-size:14px;margin-bottom:10px}.chain-item span{font-size:14px}.check-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:52px;align-items:start}.check-panel{background:var(--surface);border:1px solid var(--border);padding:26px}.check-row{display:grid;grid-template-columns:180px 1fr;gap:15px;padding:15px 0;border-bottom:1px solid var(--border);font-size:14px}.check-row:first-child{padding-top:0}.check-row:last-child{border-bottom:0;padding-bottom:0}.check-row b{color:var(--ink)}.case-section{background:var(--teal-dark);color:#cfe2de}.case-section h2,.case-section h3{color:#fff}.case-section .eyebrow{color:#efaa7d}.case-section .eyebrow:before{background:#efaa7d}.case-list{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.case-feature{min-height:330px;position:relative;background:url('/assets/images/coverpic/cover-15.webp') center/cover}.case-feature:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(3,25,24,.88),rgba(3,25,24,.1))}.case-copy{position:absolute;z-index:1;left:28px;right:28px;bottom:24px}.case-copy p{font-size:14px}.case-side{border-top:1px solid rgba(255,255,255,.3)}.case-side article{padding:22px 0;border-bottom:1px solid rgba(255,255,255,.3)}.case-side article p{font-size:14px;margin:0;color:#cfe2de}.faq-grid{max-width:900px}.accordion{margin:0;background:transparent}.accordion-item{border:1px solid var(--border);border-bottom:0;background:var(--surface)}.accordion-item:last-child{border-bottom:1px solid var(--border)}.accordion-title{color:var(--ink);font-size:16px;font-weight:700;padding:20px 50px 20px 21px}.accordion-title:hover{background:#eef4f1;color:var(--teal)}.accordion-content{border-top:1px solid var(--border);padding:18px 22px;color:var(--body);font-size:15px}.support-strip{background:var(--mist);padding:27px 0}.support-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.support-grid b{display:block;color:var(--ink);margin-bottom:3px}.support-grid span{font-size:14px}.contact-section{background:#fff}.contact-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:start}.contact-box{background:var(--paper);border-top:4px solid var(--signal);padding:28px}.contact-box h2{font-size:33px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-field.full{grid-column:1/-1}.form-field label{display:block;color:var(--ink);font-size:14px;font-weight:700;margin-bottom:6px}.form-field input,.form-field select,.form-field textarea{width:100%;border:1px solid var(--border);background:#fff;border-radius:4px;padding:10px 12px;min-height:46px;color:var(--ink)}.form-field textarea{min-height:120px;resize:vertical}.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--teal);box-shadow:0 0 0 2px rgba(14,98,92,.12)}.form-note{font-size:13px;color:var(--muted);margin-top:12px}.form-status{display:none;color:var(--success);font-weight:700;margin-top:14px}.form-status.show{display:block}footer{background:var(--teal-dark);color:#b9cfca;padding:52px 0 20px}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:50px}.footer-grid .brand{margin-bottom:18px}.footer-grid p{font-size:14px;max-width:390px}.footer-grid h3{font-size:16px;color:#fff;margin-bottom:14px}.footer-grid ul{list-style:none;margin:0;padding:0;font-size:14px}.footer-grid li{margin-bottom:7px}.footer-grid a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.2);margin-top:35px;padding-top:17px;display:flex;justify-content:space-between;font-size:13px;gap:20px}@media(max-width:1100px){.menu a{padding-left:7px;padding-right:7px;font-size:13px}.nav-contact{display:none}.split{gap:35px}.number-item{grid-template-columns:60px 1fr 160px}}@media(max-width:768px){.wrap{width:min(100% - 40px,var(--container))}.topbar{display:none}.nav-inner{min-height:62px}.mainnav{position:sticky}.nav-inner>.sub-brand,.menu{display:none}.mobile-trigger{display:block}.nav-inner:before{content:"汽车数据平台软件";color:var(--teal-dark);font-weight:800;font-size:16px}.section{padding:62px 0}.page-hero{min-height:430px}.split,.check-layout,.contact-layout,.case-list{grid-template-columns:1fr;gap:30px}.split-image{height:280px}.scene-band span{flex:1 1 50%;border-bottom:1px solid var(--border);padding:11px 12px;font-size:14px}.number-item{grid-template-columns:55px 1fr;gap:12px}.number-item .tag{grid-column:2}.chain{grid-template-columns:1fr;margin-top:25px}.chain-item{min-height:0;padding:18px}.chain-item:not(:last-child):after{content:"↓";right:auto;left:22px;top:auto;bottom:-15px}.support-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{flex-direction:column;gap:4px}}@media(max-width:520px){.page-hero h1{font-size:34px}.page-hero p{font-size:16px}.form-grid{grid-template-columns:1fr}.form-field.full{grid-column:auto}.support-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-bottom{font-size:12px}.check-row{grid-template-columns:1fr;gap:4px}.case-feature{min-height:280px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}