/* roulang page: index */
:root{
  --ink:#171b1a;--muted:#66706b;--paper:#f7f8f4;--white:#fff;
  --line:#dfe5df;--lime:#c7f36b;--green:#285d4b;--deep:#13221d;
  --amber:#f2b85b;--radius:16px;--shadow:0 16px 45px rgba(25,47,38,.09);
  --max:1220px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:15px}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;object-fit:cover}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.eyebrow{color:var(--green);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}
.section{padding:104px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:42px}
.section-head h2{font-size:clamp(27px,3vw,44px);line-height:1.2;letter-spacing:-.05em;max-width:650px}
.section-head p{color:var(--muted);max-width:460px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(247,248,244,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-top{height:72px;display:flex;align-items:center;gap:28px}
.logo{font-weight:900;font-size:19px;letter-spacing:-.06em;white-space:nowrap}
.logo i{display:inline-block;background:var(--lime);width:10px;height:10px;border-radius:50%;margin-right:8px}
.main-nav{display:flex;gap:22px;align-items:center;flex:1}
.main-nav a,.sub-nav a{font-size:13px;color:#58635d;transition:.25s}
.main-nav a:hover,.main-nav a.active,.sub-nav a:hover{color:var(--ink)}
.nav-cta,.btn-primary{background:var(--green);color:white;padding:11px 18px;border-radius:9px;font-weight:700;transition:.25s}
.nav-cta:hover,.btn-primary:hover{background:#1b4436;transform:translateY(-2px)}
.sub-row{border-top:1px solid var(--line)}
.sub-nav{height:42px;display:flex;align-items:center;gap:25px}
.sub-nav a.active{font-weight:800;border-bottom:2px solid var(--green);height:42px;display:flex;align-items:center}
.menu-toggle{display:none;background:none;font-size:24px;padding:8px}
.hero{min-height:650px;background:var(--deep);color:#fff;position:relative;overflow:hidden;padding:76px 0 70px}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(19,34,29,.98) 15%,rgba(19,34,29,.68) 53%,rgba(19,34,29,.3)),url("/assets/images/backpic/back-1.webp") center/cover}
.hero .container{position:relative}
.hero-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:70px;align-items:center}
.hero h1{font-size:clamp(42px,6vw,78px);line-height:1.06;letter-spacing:-.075em;max-width:650px;margin:18px 0 24px}
.hero-copy{color:#c9d5ce;max-width:590px;font-size:17px;line-height:1.9}
.hero-actions{display:flex;gap:12px;margin:32px 0 32px;flex-wrap:wrap}
.btn-outline{border:1px solid rgba(255,255,255,.42);color:#fff;padding:11px 18px;border-radius:9px;transition:.25s}
.btn-outline:hover{border-color:var(--lime);color:var(--lime)}
.hero-note{font-size:12px;color:#aebdb4}
.stage{background:#f8fbf6;color:var(--ink);padding:18px;border:1px solid rgba(255,255,255,.3);border-radius:20px;box-shadow:0 22px 60px rgba(0,0,0,.28)}
.stage-screen{height:300px;border-radius:13px;overflow:hidden;position:relative}
.stage-screen img{height:100%}
.screen-label{position:absolute;left:18px;top:16px;background:var(--lime);padding:4px 10px;border-radius:20px;font-size:11px;font-weight:800}
.stage-bottom{display:flex;justify-content:space-between;gap:15px;padding:20px 5px 4px}
.stage-bottom strong{font-size:25px;display:block;line-height:1.2}
.stage-bottom span{font-size:12px;color:var(--muted)}
.dots{display:flex;gap:6px;margin-top:18px}.dots b{width:22px;height:4px;background:#c9d4cc;border-radius:5px}.dots b:first-child{background:var(--green)}
.intro-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}
.intro-image{height:440px;border-radius:var(--radius);overflow:hidden}
.intro-image img{height:100%}
.intro-copy h2{font-size:clamp(28px,4vw,48px);line-height:1.18;letter-spacing:-.06em;margin:14px 0 22px}
.intro-copy p{color:var(--muted);font-size:16px}
.proof{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}.proof span{padding:10px 13px;border:1px solid var(--line);background:#fff;border-radius:9px;font-size:13px}
.kpi-section{background:#e8eee7}
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #bdcbbf;border-bottom:1px solid #bdcbbf}
.kpi{padding:28px 22px;border-right:1px solid #bdcbbf}.kpi:last-child{border:0}.kpi strong{font-size:42px;line-height:1;letter-spacing:-.06em;display:block}.kpi em{color:var(--green);font-style:normal;font-size:13px}.kpi p{color:var(--muted);font-size:13px;margin-top:10px}
.matrix{display:grid;grid-template-columns:1.05fr 1fr 1fr;gap:14px}.matrix-item{padding:27px;background:#fff;border:1px solid var(--line);min-height:190px;transition:.28s}.matrix-item:first-child{grid-row:span 2;background:var(--green);color:#fff}.matrix-item:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.matrix-item h3{font-size:20px;margin:18px 0 8px}.matrix-item p{color:var(--muted);font-size:13px}.matrix-item:first-child p{color:#d6e6dc}
.compare{background:var(--deep);color:#fff}.compare .section-head p{color:#b7c8bd}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.compare-box{padding:30px;border:1px solid #355147;border-radius:var(--radius)}.compare-box.good{background:#244c3e;border-color:#5a806f}.compare-box h3{font-size:20px;margin-bottom:20px}.compare-box li{list-style:none;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.13);color:#cbd8d0}.compare-box li::before{content:"—";color:var(--lime);margin-right:10px}
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line)}.step{padding:25px 18px 10px;border-right:1px solid var(--line);position:relative}.step:before{content:"";width:11px;height:11px;background:var(--lime);border:3px solid var(--paper);box-shadow:0 0 0 1px var(--green);border-radius:50%;position:absolute;top:-6px;left:18px}.step b{display:block;color:var(--green);font-size:12px}.step h3{font-size:17px;margin:14px 0 8px}.step p{font-size:13px;color:var(--muted)}
.news-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}.news-list,.feature-news{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.news-item{display:grid;grid-template-columns:130px 1fr;gap:20px;padding:20px;border-bottom:1px solid var(--line)}.news-item:last-child{border:0}.news-item img{height:90px;border-radius:9px}.news-item h3{font-size:17px;line-height:1.45;margin:5px 0}.news-item p,.feature-news p{font-size:13px;color:var(--muted)}.tag{font-size:11px;color:var(--green);font-weight:800}.feature-news img{height:190px}.feature-news .pad{padding:23px}.feature-news h3{font-size:23px;line-height:1.35;margin:10px 0}
.security{background:#1c3028;color:#fff}.security-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:70px}.security h2{font-size:42px;line-height:1.2;letter-spacing:-.06em;margin:14px 0}.security p{color:#c4d3ca}.security-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.security-list div{border:1px solid #436054;padding:20px;border-radius:12px}.security-list strong{display:block;color:var(--lime);margin-bottom:7px}.security-list span{font-size:13px;color:#c4d3ca}
.quick{background:#edf2ec}.quick-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:25px}.quick-tabs button{padding:10px 15px;background:#fff;border:1px solid var(--line);border-radius:30px;color:var(--muted)}.quick-tabs button.active,.quick-tabs button:hover{background:var(--green);color:#fff;border-color:var(--green)}.quick-answer{background:#fff;border-left:5px solid var(--lime);padding:28px;font-size:18px;max-width:850px}
.case-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px}.case-main{min-height:330px;border-radius:var(--radius);overflow:hidden;position:relative;color:#fff}.case-main img{height:100%;position:absolute}.case-main:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,25,19,.9),transparent 70%)}.case-text{position:absolute;z-index:1;left:30px;bottom:25px;max-width:600px}.case-text h3{font-size:28px;line-height:1.3}.case-side{background:var(--lime);padding:30px;border-radius:var(--radius)}.case-side strong{font-size:52px;display:block;line-height:1}.case-side p{margin:12px 0 25px}
.reviews{background:#fff}.review-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:25px}.quote{background:var(--green);color:#fff;border-radius:var(--radius);padding:38px}.quote blockquote{font-size:25px;line-height:1.55;letter-spacing:-.03em}.quote footer{margin-top:25px;color:#d0e1d6;font-size:13px}.review-points{display:grid;gap:12px}.review-points div{border:1px solid var(--line);padding:20px;border-radius:12px}.review-points strong{display:block;margin-bottom:5px}.stars{color:#df9c2e;letter-spacing:3px}
.faq-list{max-width:850px}.faq-item{border-top:1px solid var(--line)}.faq-q{width:100%;background:none;text-align:left;padding:20px 3px;display:flex;justify-content:space-between;font-weight:800;font-size:16px}.faq-q span{font-size:22px;color:var(--green);transition:.2s}.faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease;padding-right:40px}.faq-item.open .faq-a{max-height:180px;padding-bottom:20px}.faq-item.open .faq-q span{transform:rotate(45deg)}
.contact-section{background:var(--lime)}.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}.contact-section h2{font-size:45px;line-height:1.15;letter-spacing:-.06em;margin:13px 0}.contact-section p{max-width:420px}.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:13px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:12px;font-weight:800}.field input,.field select,.field textarea{border:1px solid #a9c36d;background:rgba(255,255,255,.65);border-radius:8px;padding:12px 13px;outline:none}.field textarea{min-height:100px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(40,93,75,.15)}.form-submit{grid-column:1/-1;justify-self:start;background:var(--deep);color:#fff;padding:13px 25px;border-radius:9px;font-weight:800}.privacy{font-size:12px;color:#526747;grid-column:1/-1}
.site-footer{background:#111d19;color:#b4c4ba;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 #30463d}.footer-brand{color:#fff;font-size:20px;font-weight:900}.site-footer h3{color:#fff;font-size:14px;margin-bottom:14px}.site-footer a{display:block;font-size:13px;margin:8px 0}.site-footer a:hover{color:var(--lime)}.footer-bottom{display:flex;justify-content:space-between;gap:15px;padding-top:22px;font-size:12px}.toast{position:fixed;right:20px;bottom:20px;background:var(--deep);color:#fff;padding:13px 17px;border-radius:8px;display:none}
@media(max-width:900px){.main-nav{gap:12px}.hero-grid,.intro-grid,.security-grid,.case-grid,.contact-grid,.review-grid{grid-template-columns:1fr;gap:35px}.hero{padding-top:55px}.stage{max-width:680px}.matrix{grid-template-columns:1fr 1fr}.matrix-item:first-child{grid-row:auto}.timeline{grid-template-columns:1fr 1fr}.kpi-row{grid-template-columns:repeat(2,1fr)}.kpi:nth-child(2){border-right:0}.kpi:nth-child(-n+2){border-bottom:1px solid #bdcbbf}.news-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}}
@media(max-width:620px){.container{width:min(100% - 30px,var(--max))}.nav-top{height:62px}.main-nav,.nav-cta,.sub-row{display:none}.menu-toggle{display:block;margin-left:auto}.site-header.mobile-open .main-nav{display:flex;position:absolute;top:62px;left:0;right:0;background:var(--paper);padding:15px;flex-direction:column;align-items:stretch;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.site-header.mobile-open .nav-cta{display:block;position:absolute;top:250px;left:15px;right:15px;text-align:center}.logo{font-size:16px}.hero{min-height:auto;padding:48px 0 55px}.hero h1{font-size:42px}.hero-copy{font-size:15px}.stage-screen{height:230px}.stage-bottom{flex-wrap:wrap}.section{padding:70px 0}.section-head{display:block;margin-bottom:28px}.section-head p{margin-top:14px}.intro-image{height:300px}.kpi{padding:22px 13px}.kpi strong{font-size:32px}.matrix,.security-list,.contact-form{grid-template-columns:1fr}.news-item{grid-template-columns:95px 1fr;gap:12px;padding:15px}.news-item img{height:78px}.security h2,.contact-section h2{font-size:35px}.timeline{grid-template-columns:1fr}.step{border-right:0;border-bottom:1px solid var(--line);padding-left:25px}.step:before{left:3px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}.contact-form .form-submit{width:100%}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category1 */
:root{
 --ink:#171b1a;--muted:#66706b;--paper:#f7f8f4;--white:#fff;
 --line:#dfe5df;--lime:#c7f36b;--green:#285d4b;--deep:#13221d;
 --amber:#f2b85b;--red:#d86551;--radius:16px;
 --shadow:0 16px 45px rgba(25,47,38,.09);--max:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:15px}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;object-fit:cover}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.eyebrow{color:var(--green);font-size:12px;font-weight:800;letter-spacing:.16em}
.section{padding:94px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:38px}
.section-head h2{font-size:clamp(28px,3vw,44px);line-height:1.2;letter-spacing:-.055em;max-width:680px;margin:12px 0 0}
.section-head p{color:var(--muted);max-width:475px;margin:0}
.site-header{position:sticky;top:0;z-index:20;background:rgba(247,248,244,.95);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-top{height:72px;display:flex;align-items:center;gap:28px}
.logo{font-weight:900;font-size:19px;letter-spacing:-.06em;white-space:nowrap}
.logo i{display:inline-block;background:var(--lime);width:10px;height:10px;border-radius:50%;margin-right:8px}
.main-nav{display:flex;gap:22px;align-items:center;flex:1}
.main-nav a,.sub-nav a{font-size:13px;color:#58635d;transition:.25s}
.main-nav a:hover,.main-nav a.active,.sub-nav a:hover{color:var(--ink)}
.main-nav a.active{font-weight:800}
.nav-cta,.btn-primary{background:var(--green);color:white;padding:11px 18px;border-radius:9px;font-weight:700;transition:.25s;display:inline-block}
.nav-cta:hover,.btn-primary:hover{background:#1b4436;transform:translateY(-2px)}
.sub-row{border-top:1px solid var(--line)}
.sub-nav{height:42px;display:flex;align-items:center;gap:25px;overflow:auto}
.sub-nav a.active{font-weight:800;border-bottom:2px solid var(--green);height:42px;display:flex;align-items:center;white-space:nowrap}
.menu-toggle{display:none;background:none;font-size:24px;padding:8px;min-width:44px;min-height:44px}
.page-intro{padding:72px 0 60px;background:#e8eee7;border-bottom:1px solid var(--line)}
.page-intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
.page-intro h1{font-size:clamp(42px,6vw,76px);line-height:1.06;letter-spacing:-.075em;max-width:750px;margin:18px 0 22px}
.lead{font-size:17px;color:var(--muted);max-width:680px;line-height:1.9}
.intro-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat-chip{background:var(--white);border:1px solid var(--line);border-radius:13px;padding:19px}
.stat-chip strong{font-size:29px;line-height:1;display:block;margin-bottom:8px}
.stat-chip span{font-size:12px;color:var(--muted)}
.filter-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:30px}
.filter-tabs{display:flex;gap:9px;flex-wrap:wrap}
.filter-tabs button{background:var(--white);color:var(--muted);border:1px solid var(--line);padding:9px 16px;border-radius:30px;transition:.25s}
.filter-tabs button:hover,.filter-tabs button.active{background:var(--green);color:#fff;border-color:var(--green)}
.filter-select{background:var(--white);border:1px solid var(--line);border-radius:9px;padding:10px 13px;color:var(--muted);outline:none}
.filter-select:focus,.filter-tabs button:focus,.btn-primary:focus,.btn-outline:focus,.faq-q:focus,.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:3px solid rgba(199,243,107,.75);outline-offset:2px}
.content-flow{display:grid;grid-template-columns:1.12fr .88fr;gap:18px}
.content-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.28s}
.content-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.content-card.large{grid-row:span 2}
.content-card img{height:190px}
.content-card.large img{height:310px}
.content-card-body{padding:22px}
.content-card h3{font-size:22px;line-height:1.35;margin:9px 0}
.content-card.small h3{font-size:18px}
.content-card p{font-size:13px;color:var(--muted);margin:0 0 17px}
.meta{display:flex;justify-content:space-between;gap:14px;color:var(--muted);font-size:12px;border-top:1px solid var(--line);padding-top:14px}
.tag{font-size:11px;color:var(--green);font-weight:800}
.detail-link{color:var(--green);font-size:13px;font-weight:800}
.detail-link:after{content:" →";transition:.2s}
.detail-link:hover:after{padding-left:4px}
.parameter-section{background:#fff}
.parameter-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:75px;align-items:start}
.parameter-note{border-left:3px solid var(--lime);padding-left:22px;color:var(--muted)}
.parameter-note strong{display:block;color:var(--ink);font-size:21px;margin-bottom:10px}
.parameter-list{border-top:1px solid var(--line)}
.parameter-row{display:grid;grid-template-columns:1.1fr .8fr 1fr;gap:20px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}
.parameter-row strong{font-size:16px}
.parameter-row span{font-size:13px;color:var(--muted)}
.status{display:inline-flex;justify-self:end;align-items:center;gap:7px;color:var(--green)!important;font-weight:700}
.status:before{content:"";width:7px;height:7px;background:var(--lime);border-radius:50%}
.scenario-section{background:var(--deep);color:#fff}
.scenario-section .section-head p{color:#b7c8bd}
.scenario-layout{display:grid;grid-template-columns:.95fr 1.05fr;gap:28px}
.scenario-image{min-height:390px;border-radius:var(--radius);overflow:hidden;position:relative}
.scenario-image img{height:100%}
.scenario-image:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,25,19,.85),transparent 65%)}
.scenario-caption{position:absolute;z-index:1;bottom:25px;left:25px;right:25px}
.scenario-caption strong{font-size:24px;display:block}
.scenario-caption span{color:#c8d9ce;font-size:13px}
.scenario-list{display:grid;gap:12px}
.scenario-item{border:1px solid #436054;border-radius:12px;padding:22px;display:grid;grid-template-columns:54px 1fr;gap:18px;transition:.25s}
.scenario-item:hover{border-color:var(--lime);transform:translateX(4px)}
.scenario-no{font-size:25px;color:var(--lime);font-weight:900}
.scenario-item h3{margin:0 0 5px;font-size:19px}
.scenario-item p{margin:0;color:#c4d3ca;font-size:13px}
.faq-list{max-width:880px}
.faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;background:none;text-align:left;padding:20px 3px;display:flex;justify-content:space-between;gap:20px;font-weight:800;font-size:16px;color:var(--ink);min-height:60px}
.faq-q span{font-size:22px;color:var(--green);transition:.2s}
.faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease;padding-right:40px}
.faq-item.open .faq-a{max-height:180px;padding-bottom:20px}
.faq-item.open .faq-q span{transform:rotate(45deg)}
.cta-section{background:var(--lime);padding:75px 0}
.cta-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:65px;align-items:start}
.cta-section h2{font-size:clamp(32px,4vw,54px);line-height:1.13;letter-spacing:-.06em;margin:12px 0 16px}
.cta-section p{max-width:430px}
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:12px;font-weight:800}
.field input,.field select,.field textarea{width:100%;border:1px solid rgba(23,27,26,.22);background:rgba(255,255,255,.7);border-radius:9px;padding:12px 13px;color:var(--ink);outline:none}
.field textarea{min-height:108px;resize:vertical}
.form-bottom{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:4px}
.form-tip{font-size:12px;color:#4c5c52}
.site-footer{background:var(--deep);color:#fff;padding:60px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.35fr .7fr .7fr 1.1fr;gap:34px}
.footer-brand{font-size:20px;font-weight:900;letter-spacing:-.05em}
.site-footer p{color:#b8c8bf;line-height:1.7}
.site-footer h3{font-size:14px;margin:0 0 14px}
.site-footer a{display:block;color:#b8c8bf;font-size:13px;margin:8px 0;transition:.2s}
.site-footer a:hover{color:var(--lime)}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #385247;margin-top:40px;padding-top:19px;color:#9eb0a6;font-size:12px}
.empty-state{display:none;padding:35px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:var(--radius);background:#fff}
@media(max-width:1024px){
 .main-nav{gap:13px}.nav-top{gap:17px}.page-intro-grid,.parameter-layout,.scenario-layout,.cta-grid{gap:35px}
 .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
 .container{width:min(var(--max),calc(100% - 32px))}
 .nav-top{height:64px}.menu-toggle{display:block;margin-left:auto}
 .main-nav{display:none;position:absolute;top:64px;left:0;right:0;padding:12px 16px 18px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 12px 25px rgba(25,47,38,.08);flex-direction:column;align-items:stretch;gap:0}
 .main-nav.open{display:flex}.main-nav a{padding:13px 8px;border-bottom:1px solid var(--line)}
 .nav-cta{display:none}.sub-row{display:none}
 .page-intro{padding:55px 0 46px}.page-intro-grid,.content-flow,.parameter-layout,.scenario-layout,.cta-grid{grid-template-columns:1fr}
 .page-intro h1{font-size:clamp(40px,11vw,62px)}
 .intro-stats{max-width:500px}.content-card.large{grid-row:auto}.content-card.large img{height:230px}
 .filter-bar{align-items:flex-start;flex-direction:column}.filter-select{width:100%}
 .parameter-row{grid-template-columns:1fr 1fr}.parameter-row .status{grid-column:2}
 .scenario-image{min-height:270px}.section{padding:70px 0}
 .form-bottom{align-items:flex-start;flex-direction:column}
}
@media(max-width:520px){
 body{font-size:14px}.logo{font-size:16px}.section-head{display:block;margin-bottom:28px}.section-head p{margin-top:16px}
 .intro-stats{grid-template-columns:1fr 1fr}.stat-chip{padding:14px}.stat-chip strong{font-size:23px}
 .content-card img,.content-card.large img{height:190px}
 .parameter-row{display:block}.parameter-row span{display:block;margin-top:5px}.parameter-row .status{display:inline-flex;margin-top:9px}
 .contact-form{grid-template-columns:1fr}.field.full{grid-column:auto}.form-bottom{grid-column:auto}
 .footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-grid>div:first-child,.footer-grid>div:last-child{grid-column:1/-1}
 .footer-bottom{display:block}.footer-bottom span{display:block;margin:6px 0}
}
@media(prefers-reduced-motion:reduce){
 *,*:before,*:after{scroll-behavior:auto!important;transition:none!important}
}

/* roulang page: category2 */
:root{
 --ink:#171b1a;--muted:#66706b;--paper:#f7f8f4;--white:#fff;
 --line:#dfe5df;--lime:#c7f36b;--green:#285d4b;--deep:#13221d;
 --amber:#f2b85b;--radius:16px;--shadow:0 16px 45px rgba(25,47,38,.09);
 --max:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:15px}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;object-fit:cover}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
:focus-visible{outline:3px solid var(--amber);outline-offset:3px}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.eyebrow{color:var(--green);font-size:12px;font-weight:800;letter-spacing:.16em}
.section{padding:92px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:38px}
.section-head h2{font-size:clamp(27px,3vw,44px);line-height:1.2;letter-spacing:-.05em;max-width:650px;margin:12px 0 0}
.section-head p{color:var(--muted);max-width:470px;margin:0}
.site-header{position:sticky;top:0;z-index:20;background:rgba(247,248,244,.95);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-top{height:72px;display:flex;align-items:center;gap:28px}
.logo{font-weight:900;font-size:19px;letter-spacing:-.06em;white-space:nowrap}
.logo i{display:inline-block;background:var(--lime);width:10px;height:10px;border-radius:50%;margin-right:8px}
.main-nav{display:flex;gap:22px;align-items:center;flex:1}
.main-nav a,.sub-nav a{font-size:13px;color:#58635d;transition:.25s}
.main-nav a:hover,.main-nav a.active,.sub-nav a:hover{color:var(--ink)}
.main-nav a.active{font-weight:800}
.nav-cta,.btn-primary{background:var(--green);color:#fff;padding:11px 18px;border-radius:9px;font-weight:700;transition:.25s;display:inline-block}
.nav-cta:hover,.btn-primary:hover{background:#1b4436;transform:translateY(-2px)}
.sub-row{border-top:1px solid var(--line)}
.sub-nav{height:42px;display:flex;align-items:center;gap:25px;overflow:auto;white-space:nowrap}
.sub-nav a.active{font-weight:800;border-bottom:2px solid var(--green);height:42px;display:flex;align-items:center}
.menu-toggle{display:none;background:none;font-size:24px;padding:8px;width:44px;height:44px}
.page-banner{position:relative;overflow:hidden;background:var(--deep);color:#fff;padding:80px 0 86px}
.page-banner:after{content:"";position:absolute;right:-8%;top:-55%;width:64%;height:190%;background:var(--lime);transform:rotate(-16deg);opacity:.95}
.page-banner .container{position:relative;z-index:1}
.banner-copy{max-width:760px}
.banner-copy .eyebrow{color:var(--lime)}
.banner-copy h1{font-size:clamp(42px,6vw,76px);line-height:1.06;letter-spacing:-.075em;margin:18px 0 22px}
.banner-copy p{color:#d1ddd5;max-width:630px;font-size:17px;margin:0}
.banner-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.badge,.tag{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:30px;padding:5px 11px;font-size:12px;color:var(--green);font-weight:800}
.banner-meta .badge{color:#fff;border-color:rgba(255,255,255,.3)}
.filters{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
.filter-tabs{display:flex;gap:8px;flex-wrap:wrap}
.filter-tabs button{background:var(--paper);border:1px solid var(--line);border-radius:30px;padding:9px 16px;color:var(--muted);transition:.25s}
.filter-tabs button:hover,.filter-tabs button.active{background:var(--green);color:#fff;border-color:var(--green)}
.filter-select{border:1px solid var(--line);border-radius:9px;background:#fff;padding:10px 13px;color:var(--muted)}
.content-layout{display:grid;grid-template-columns:1.32fr .68fr;gap:24px;align-items:start}
.content-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.content-item{display:grid;grid-template-columns:190px 1fr;gap:24px;padding:22px;border-bottom:1px solid var(--line);transition:.25s}
.content-item:last-child{border-bottom:0}
.content-item:hover{background:#fbfdf8}
.content-item img{height:145px;border-radius:11px}
.content-item h3{font-size:21px;line-height:1.4;margin:9px 0 7px}
.content-item p{color:var(--muted);font-size:14px;margin:0 0 12px}
.item-foot{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:12px}
.detail-link{color:var(--green);font-weight:800}
.side-panel{background:var(--green);color:#fff;border-radius:var(--radius);padding:28px;position:sticky;top:145px}
.side-panel h3{font-size:24px;line-height:1.3;margin:12px 0}
.side-panel p{color:#d4e3d9;font-size:14px}
.side-stat{border-top:1px solid rgba(255,255,255,.25);padding:16px 0;display:flex;justify-content:space-between}
.side-stat strong{font-size:27px;color:var(--lime);line-height:1}
.more-link{display:inline-block;margin:22px;color:var(--green);font-weight:800}
.data-band{background:#e8eee7}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #bdcbbf;border-bottom:1px solid #bdcbbf}
.data-cell{padding:25px 20px;border-right:1px solid #bdcbbf}
.data-cell:last-child{border-right:0}
.data-cell strong{display:block;font-size:38px;letter-spacing:-.06em;line-height:1.15}
.data-cell span{display:block;color:var(--muted);font-size:13px;margin-top:7px}
.meter{height:6px;background:#ced9ce;border-radius:10px;margin-top:16px;overflow:hidden}
.meter i{display:block;height:100%;background:var(--green);border-radius:10px}
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:grid;grid-template-columns:.82fr 1fr}
.feature-card img{height:100%;min-height:210px}
.feature-card .pad{padding:25px}
.feature-card h3{font-size:22px;line-height:1.35;margin:10px 0}
.feature-card p{color:var(--muted);font-size:14px}
.faq-list{max-width:860px}
.faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;background:none;text-align:left;padding:20px 3px;display:flex;justify-content:space-between;align-items:center;font-weight:800;font-size:16px}
.faq-q span{font-size:22px;color:var(--green);transition:.2s}
.faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease;padding-right:40px}
.faq-item.open .faq-a{max-height:160px;padding-bottom:20px}
.faq-item.open .faq-q span{transform:rotate(45deg)}
.contact-section{background:var(--lime)}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}
.contact-section h2{font-size:clamp(34px,4vw,52px);line-height:1.15;letter-spacing:-.06em;margin:13px 0}
.contact-section p{max-width:430px}
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:800}
.field input,.field select,.field textarea{width:100%;border:1px solid rgba(23,27,26,.25);border-radius:9px;background:rgba(255,255,255,.66);padding:12px 13px;color:var(--ink)}
.field textarea{min-height:105px;resize:vertical}
.form-submit{background:var(--deep);color:#fff;border-radius:9px;padding:13px 22px;font-weight:800;transition:.25s}
.form-submit:hover{background:var(--green);transform:translateY(-2px)}
.form-note{font-size:12px;color:#536056;margin:0}
.site-footer{background:var(--deep);color:#fff;padding:60px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.35fr .75fr .75fr 1.2fr;gap:35px}
.footer-brand{font-size:21px;font-weight:900}
.site-footer h3{font-size:14px;margin:0 0 15px;color:var(--lime)}
.site-footer a{display:block;font-size:13px;color:#c3d0c8;margin:8px 0;transition:.2s}
.site-footer a:hover{color:var(--lime)}
.site-footer p{color:#c3d0c8;margin:7px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.16);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#9eafa5;font-size:12px}
@media(max-width:900px){
 .main-nav{gap:13px}.nav-top{gap:14px}.content-layout,.contact-grid{grid-template-columns:1fr}.side-panel{position:static}.feature-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:700px){
 .container{width:min(var(--max),calc(100% - 32px))}
 .nav-top{height:64px}.logo{font-size:17px}.menu-toggle{display:block;margin-left:auto}
 .main-nav{display:none;position:absolute;left:16px;right:16px;top:62px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:12px;padding:10px;flex-direction:column;align-items:stretch;gap:0}
 .site-header.menu-open .main-nav{display:flex}.main-nav a{padding:13px 12px;border-bottom:1px solid var(--line)}
 .site-header.menu-open .nav-cta{display:block}.nav-cta{display:none;padding:11px 12px;margin-top:8px;text-align:center}
 .sub-row{display:none}.page-banner{padding:62px 0 68px}.page-banner:after{right:-38%;width:70%;opacity:.75}
 .section{padding:68px 0}.section-head{display:block;margin-bottom:27px}.section-head p{margin-top:15px}
 .filters{display:block}.filter-tabs{margin-bottom:13px}.filter-select{width:100%}
 .content-item{grid-template-columns:1fr;gap:15px}.content-item img{height:190px}.item-foot{display:block}.item-foot .detail-link{display:block;margin-top:6px}
 .data-grid{grid-template-columns:1fr 1fr}.data-cell:nth-child(2){border-right:0}.data-cell:nth-child(-n+2){border-bottom:1px solid #bdcbbf}
 .feature-card{grid-template-columns:1fr}.feature-card img{height:190px;min-height:0}
 .contact-form{grid-template-columns:1fr}.field.full{grid-column:auto}
 .footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin:8px 0}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category3 */
:root{
 --ink:#171b1a;--muted:#66706b;--paper:#f7f8f4;--white:#fff;
 --line:#dfe5df;--lime:#c7f36b;--green:#285d4b;--deep:#13221d;
 --amber:#f2b85b;--radius:16px;--shadow:0 16px 45px rgba(25,47,38,.09);
 --max:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:15px}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;object-fit:cover}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.eyebrow{color:var(--green);font-size:12px;font-weight:800;letter-spacing:.16em}
.section{padding:92px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:38px}
.section-head h2{font-size:clamp(28px,3vw,44px);line-height:1.2;letter-spacing:-.05em;margin:10px 0 0}
.section-head p{color:var(--muted);max-width:460px;margin:0}
.site-header{position:sticky;top:0;z-index:20;background:rgba(247,248,244,.95);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-top{height:72px;display:flex;align-items:center;gap:28px}
.logo{font-weight:900;font-size:19px;letter-spacing:-.06em;white-space:nowrap}
.logo i{display:inline-block;background:var(--lime);width:10px;height:10px;border-radius:50%;margin-right:8px}
.main-nav{display:flex;gap:22px;align-items:center;flex:1}
.main-nav a,.sub-nav a{font-size:13px;color:#58635d;transition:.25s}
.main-nav a:hover,.main-nav a.active,.sub-nav a:hover{color:var(--ink)}
.main-nav a.active{font-weight:800}
.nav-cta,.btn-primary{background:var(--green);color:white;padding:11px 18px;border-radius:9px;font-weight:700;transition:.25s}
.nav-cta:hover,.btn-primary:hover{background:#1b4436;transform:translateY(-2px)}
.sub-row{border-top:1px solid var(--line)}
.sub-nav{height:42px;display:flex;align-items:center;gap:25px}
.sub-nav a.active{font-weight:800;border-bottom:2px solid var(--green);height:42px;display:flex;align-items:center}
.menu-toggle{display:none;background:none;font-size:24px;padding:8px}
.page-intro{padding:76px 0 66px;background:#e8eee7;border-bottom:1px solid var(--line)}
.intro-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
.page-intro h1{font-size:clamp(42px,6vw,76px);line-height:1.06;letter-spacing:-.08em;margin:17px 0 22px;max-width:760px}
.lead{font-size:17px;line-height:1.9;color:var(--muted);max-width:680px}
.status-panel{background:var(--deep);color:#fff;border-radius:18px;padding:24px;box-shadow:var(--shadow)}
.status-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #466054;padding-bottom:16px;margin-bottom:18px}
.status-dot{width:9px;height:9px;background:var(--lime);border-radius:50%;display:inline-block;margin-right:8px}
.status-panel small{color:#b9cabe}
.status-row{display:flex;justify-content:space-between;align-items:end;margin-top:18px}
.status-row strong{font-size:32px;line-height:1}
.status-row span{font-size:12px;color:#b9cabe}
.filter-bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:18px 0;border-bottom:1px solid var(--line)}
.filter-bar label{font-weight:800;font-size:13px;margin-right:8px}
.filter-btn{padding:9px 16px;border:1px solid var(--line);background:var(--white);border-radius:30px;color:var(--muted);transition:.25s}
.filter-btn:hover,.filter-btn.active{background:var(--green);border-color:var(--green);color:#fff}
.list-section{padding-top:70px}
.content-flow{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}
.feature-card,.article-list{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.feature-card{display:grid;grid-template-columns:.9fr 1.1fr;min-height:360px}
.feature-card img{height:100%;min-height:300px}
.feature-copy{padding:32px}
.tag{display:inline-flex;color:var(--green);background:#edf5e7;border-radius:30px;padding:4px 10px;font-size:11px;font-weight:800}
.feature-copy h2{font-size:30px;line-height:1.3;letter-spacing:-.04em;margin:22px 0 14px}
.feature-copy p,.article-item p{color:var(--muted);font-size:14px}
.text-link{display:inline-block;margin-top:14px;color:var(--green);font-weight:800;border-bottom:1px solid var(--green);transition:.2s}
.text-link:hover{color:#13221d;padding-left:4px}
.article-item{display:grid;grid-template-columns:104px 1fr;gap:16px;padding:17px;border-bottom:1px solid var(--line)}
.article-item:last-child{border-bottom:0}
.article-item img{height:82px;border-radius:10px}
.article-item h3{font-size:16px;line-height:1.45;margin:4px 0}
.article-item p{font-size:12px;margin:0}
.support-section{background:var(--deep);color:#fff}
.support-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:start}
.support-section .eyebrow{color:var(--lime)}
.support-section h2{font-size:42px;line-height:1.2;letter-spacing:-.06em;margin:12px 0 18px}
.support-section .intro-text{color:#bfd0c5}
.param-list{border-top:1px solid #466054}
.param{display:grid;grid-template-columns:160px 1fr;gap:25px;padding:20px 0;border-bottom:1px solid #466054}
.param strong{color:var(--lime)}
.param span{color:#d0ddd4}
.scene-section{background:#f0f3ed}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.scene{min-height:220px;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;position:relative;overflow:hidden}
.scene:nth-child(2){background:var(--lime);transform:translateY(28px)}
.scene:nth-child(3){background:var(--green);color:#fff}
.scene:nth-child(3) p{color:#d6e6dc}
.scene h3{font-size:22px;margin:18px 0 8px}
.scene p{color:var(--muted);font-size:14px;margin:0}
.scene-index{font-family:monospace;font-size:13px;color:var(--green);font-weight:800}
.scene:nth-child(3) .scene-index{color:var(--lime)}
.faq-list{max-width:870px}
.faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;background:none;text-align:left;padding:20px 3px;display:flex;justify-content:space-between;font-weight:800;font-size:16px;color:var(--ink)}
.faq-q span{font-size:22px;color:var(--green);transition:.2s}
.faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease;padding-right:40px}
.faq-item.open .faq-a{max-height:160px;padding-bottom:20px}
.faq-item.open .faq-q span{transform:rotate(45deg)}
.contact-section{background:var(--lime);padding:76px 0}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}
.contact-section h2{font-size:clamp(34px,4vw,54px);line-height:1.15;letter-spacing:-.06em;margin:13px 0}
.contact-section p{max-width:420px}
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:800}
.field input,.field select,.field textarea{width:100%;border:1px solid rgba(23,27,26,.22);background:rgba(255,255,255,.66);border-radius:9px;padding:12px 13px;color:var(--ink);outline:0}
.field textarea{min-height:100px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(40,93,75,.16)}
.form-submit{grid-column:1/-1;display:flex;align-items:center;gap:18px;margin-top:5px}
.form-submit button{background:var(--deep);color:#fff;border-radius:9px;padding:13px 24px;font-weight:800;transition:.25s}
.form-submit button:hover{background:var(--green);transform:translateY(-2px)}
.form-note{font-size:12px;color:#4f5c53}
.site-footer{background:var(--deep);color:#fff;padding:64px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr 1.2fr;gap:35px}
.footer-brand{font-size:20px;font-weight:900}
.site-footer p{color:#b9cabe;margin:0}
.site-footer h3{font-size:14px;margin:0 0 14px;color:var(--lime)}
.site-footer a{display:block;color:#c8d4cc;font-size:13px;margin:8px 0;transition:.2s}
.site-footer a:hover{color:var(--lime);padding-left:3px}
.footer-bottom{border-top:1px solid #385247;margin-top:44px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#9fb1a6;font-size:12px}
[aria-hidden="true"]{user-select:none}
@media(max-width:900px){
 .main-nav{gap:12px}
 .nav-top{gap:15px}
 .intro-layout,.content-flow,.support-layout,.contact-grid{grid-template-columns:1fr;gap:30px}
 .feature-card{grid-template-columns:1fr}
 .feature-card img{height:230px;min-height:0}
 .support-layout{gap:35px}
 .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
 .container{width:min(var(--max),calc(100% - 30px))}
 .nav-top{height:64px}
 .logo{font-size:16px}
 .menu-toggle{display:block;margin-left:auto}
 .main-nav{display:none;position:absolute;top:64px;left:15px;right:15px;padding:12px;background:var(--white);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .main-nav.open{display:flex}
 .main-nav a{padding:11px 12px;min-height:44px}
 .nav-cta{display:none}
 .sub-nav{overflow-x:auto;gap:20px;white-space:nowrap}
 .page-intro{padding:56px 0 48px}
 .page-intro h1{font-size:44px}
 .section{padding:68px 0}
 .section-head{display:block;margin-bottom:28px}
 .section-head p{margin-top:15px}
 .scene-grid{grid-template-columns:1fr}
 .scene:nth-child(2){transform:none}
 .contact-form{grid-template-columns:1fr}
 .field.full,.form-submit{grid-column:auto}
 .form-submit{display:block}
 .form-submit button{width:100%;margin-bottom:10px}
 .footer-grid{grid-template-columns:1fr;gap:27px}
 .footer-bottom{display:block;line-height:2}
}
@media(prefers-reduced-motion:reduce){
 *,*:before,*:after{scroll-behavior:auto!important;transition:none!important}
}

/* roulang page: category4 */
:root{
 --ink:#171b1a;--muted:#66706b;--paper:#f7f8f4;--white:#fff;
 --line:#dfe5df;--lime:#c7f36b;--green:#285d4b;--deep:#13221d;
 --amber:#f2b85b;--red:#d86e55;--radius:16px;
 --shadow:0 16px 45px rgba(25,47,38,.09);--max:1220px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:15px;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;object-fit:cover}
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(40,93,75,.35);outline-offset:3px}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.eyebrow{color:var(--green);font-size:12px;font-weight:800;letter-spacing:.16em}
.section{padding:94px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:38px}
.section-head h2{font-size:clamp(28px,3.4vw,46px);line-height:1.16;letter-spacing:-.06em;max-width:670px}
.section-head p{color:var(--muted);max-width:465px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(247,248,244,.95);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-top{height:72px;display:flex;align-items:center;gap:28px}
.logo{font-weight:900;font-size:19px;letter-spacing:-.06em;white-space:nowrap}
.logo i{display:inline-block;background:var(--lime);width:10px;height:10px;border-radius:50%;margin-right:8px}
.main-nav{display:flex;gap:22px;align-items:center;flex:1}
.main-nav a,.sub-nav a{font-size:13px;color:#58635d;transition:.25s}
.main-nav a:hover,.main-nav a.active,.sub-nav a:hover{color:var(--ink)}
.main-nav a.active{font-weight:800}
.nav-cta,.btn-primary{background:var(--green);color:white;padding:11px 18px;border-radius:9px;font-weight:700;transition:.25s}
.nav-cta:hover,.btn-primary:hover{background:#1b4436;transform:translateY(-2px)}
.sub-row{border-top:1px solid var(--line)}
.sub-nav{height:42px;display:flex;align-items:center;gap:25px}
.sub-nav a.active{font-weight:800;border-bottom:2px solid var(--green);height:42px;display:flex;align-items:center}
.menu-toggle{display:none;background:none;font-size:24px;padding:8px;min-width:44px;min-height:44px}
.page-intro{padding:75px 0 62px;background:#e8eee7;border-bottom:1px solid var(--line)}
.intro-layout{display:grid;grid-template-columns:1fr .82fr;gap:70px;align-items:end}
.page-intro h1{font-size:clamp(42px,6vw,76px);line-height:1.04;letter-spacing:-.08em;margin:15px 0 22px;max-width:700px}
.lead{font-size:18px;color:var(--muted);max-width:670px;line-height:1.9}
.intro-panel{background:var(--deep);color:#fff;border-radius:20px;padding:26px;position:relative;overflow:hidden}
.intro-panel:after{content:"";position:absolute;width:170px;height:170px;border:1px solid rgba(199,243,107,.3);border-radius:50%;right:-48px;top:-55px}
.intro-panel strong{font-size:42px;line-height:1;color:var(--lime);display:block;margin:12px 0 4px}
.intro-panel span{font-size:13px;color:#c4d3ca}
.filter-section{padding:30px 0;background:#fff;border-bottom:1px solid var(--line)}
.filter-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.filter-label{font-weight:800;margin-right:8px}
.filter-btn{padding:9px 17px;border:1px solid var(--line);border-radius:30px;background:var(--paper);color:var(--muted);transition:.25s}
.filter-btn:hover,.filter-btn.active{background:var(--green);border-color:var(--green);color:#fff}
.content-flow{display:grid;grid-template-columns:1.45fr .75fr;gap:24px;align-items:start}
.article-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.article-item{display:grid;grid-template-columns:220px 1fr;gap:25px;padding:23px;border-bottom:1px solid var(--line);transition:.25s}
.article-item:last-child{border:0}
.article-item:hover{background:#fbfcf8}
.article-item img{height:142px;border-radius:11px}
.article-item h3{font-size:21px;line-height:1.4;margin:7px 0 8px;letter-spacing:-.03em}
.article-item p{font-size:13px;color:var(--muted);line-height:1.8}
.meta{display:flex;align-items:center;gap:13px;color:#89948e;font-size:12px}
.tag{font-size:11px;color:var(--green);font-weight:800}
.more-link{display:inline-flex;margin:23px;padding:10px 15px;border:1px solid var(--green);border-radius:8px;color:var(--green);font-weight:700;transition:.25s}
.more-link:hover{background:var(--green);color:#fff}
.side-panel{background:var(--deep);color:#fff;border-radius:var(--radius);padding:27px;position:sticky;top:145px}
.side-panel h3{font-size:23px;line-height:1.35;margin:10px 0 22px}
.side-stat{padding:18px 0;border-top:1px solid rgba(255,255,255,.16)}
.side-stat b{font-size:30px;color:var(--lime);display:block;line-height:1.2}
.side-stat span{font-size:12px;color:#c2d1c8}
.support-section{background:#e8eee7}
.support-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}
.support-copy h2{font-size:40px;line-height:1.2;letter-spacing:-.06em;margin:12px 0 18px}
.support-copy p{color:var(--muted)}
.metric-table{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.metric-row{display:grid;grid-template-columns:1.2fr .7fr 1.5fr;gap:18px;align-items:center;padding:18px 22px;border-bottom:1px solid var(--line)}
.metric-row:last-child{border:0}
.metric-row strong{font-size:22px}
.metric-row small{color:var(--muted);font-size:12px}
.progress{height:7px;background:#e4eae3;border-radius:10px;overflow:hidden}
.progress i{display:block;height:100%;background:var(--green);border-radius:10px}
.scene-section{background:#fff}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.scene-card{min-height:310px;border-radius:var(--radius);overflow:hidden;position:relative;color:#fff}
.scene-card img{position:absolute;inset:0;height:100%;transition:.4s}
.scene-card:hover img{transform:scale(1.04)}
.scene-card:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(12,28,21,.92),rgba(12,28,21,.06) 72%)}
.scene-text{position:absolute;z-index:1;left:27px;right:27px;bottom:25px}
.scene-text h3{font-size:25px;margin:8px 0}
.scene-text p{font-size:13px;color:#d5e0d9;max-width:470px}
.faq-section{background:var(--paper)}
.faq-list{max-width:880px}
.faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;background:none;text-align:left;padding:20px 3px;display:flex;justify-content:space-between;gap:20px;font-weight:800;font-size:16px}
.faq-q span{font-size:22px;color:var(--green);transition:.2s}
.faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease;padding-right:45px}
.faq-item.open .faq-a{max-height:180px;padding-bottom:20px}
.faq-item.open .faq-q span{transform:rotate(45deg)}
.contact-section{background:var(--lime);padding:78px 0}
.contact-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:70px;align-items:start}
.contact-section h2{font-size:clamp(34px,4vw,53px);line-height:1.12;letter-spacing:-.07em;margin:12px 0 17px}
.contact-section p{max-width:430px}
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:12px;font-weight:800}
.field input,.field select,.field textarea{width:100%;border:1px solid rgba(23,27,26,.22);background:rgba(255,255,255,.65);border-radius:9px;padding:12px 13px;color:var(--ink)}
.field textarea{min-height:105px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);background:#fff;outline:2px solid rgba(40,93,75,.18)}
.form-submit{grid-column:1/-1;display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:4px}
.form-submit button{background:var(--deep);color:#fff;padding:13px 25px;border-radius:9px;font-weight:800;transition:.25s}
.form-submit button:hover{background:var(--green);transform:translateY(-2px)}
.form-submit small{color:#526057}
.site-footer{background:var(--deep);color:#fff;padding:58px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.3fr .75fr .75fr 1.15fr;gap:35px}
.footer-brand{font-size:20px;font-weight:900}
.site-footer p{color:#b9c9bf}
.site-footer h3{font-size:14px;margin-bottom:13px;color:var(--lime)}
.site-footer a{display:block;color:#bdcbc2;font-size:13px;margin:7px 0;transition:.2s}
.site-footer a:hover{color:var(--lime)}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.15);margin-top:42px;padding-top:18px;color:#92a49a;font-size:12px}
[hidden]{display:none!important}
@media(max-width:900px){
 .main-nav{gap:12px}.intro-layout,.support-grid,.contact-grid{grid-template-columns:1fr;gap:35px}
 .content-flow{grid-template-columns:1fr}.side-panel{position:static}
 .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
 .container{width:min(100% - 32px,var(--max))}
 .nav-top{height:64px;gap:10px}.logo{font-size:16px}.nav-cta{display:none}
 .menu-toggle{display:block;margin-left:auto}
 .main-nav{display:none;position:absolute;left:16px;right:16px;top:60px;padding:12px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:12px;flex-direction:column;align-items:stretch;gap:0}
 .main-nav.open{display:flex}.main-nav a{padding:12px 14px;border-bottom:1px solid var(--line)}
 .main-nav a:last-child{border:0}
 .sub-nav{height:39px;gap:18px;overflow-x:auto;white-space:nowrap}.sub-nav a{font-size:12px}
 .page-intro{padding:52px 0 42px}.page-intro h1{font-size:45px}
 .section{padding:68px 0}.section-head{display:block;margin-bottom:27px}.section-head p{margin-top:14px}
 .article-item{grid-template-columns:1fr;gap:15px}.article-item img{height:190px}
 .metric-row{grid-template-columns:1fr .55fr;gap:8px}.metric-row .progress{grid-column:1/-1}
 .scene-grid{grid-template-columns:1fr}.scene-card{min-height:270px}
 .contact-form{grid-template-columns:1fr}.field.full,.form-submit{grid-column:auto}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child,.footer-grid>div:last-child{grid-column:1/-1}
 .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category5 */
:root{
 --ink:#171b1a;--muted:#66706b;--paper:#f7f8f4;--white:#fff;
 --line:#dfe5df;--lime:#c7f36b;--green:#285d4b;--deep:#13221d;
 --amber:#f2b85b;--red:#c96255;--radius:16px;
 --shadow:0 16px 45px rgba(25,47,38,.09);--max:1220px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.75;font-size:15px}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;object-fit:cover}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
:focus-visible{outline:3px solid var(--amber);outline-offset:3px}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(247,248,244,.95);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-top{height:72px;display:flex;align-items:center;gap:28px}
.logo{font-weight:900;font-size:19px;letter-spacing:-.06em;white-space:nowrap}
.logo i{display:inline-block;background:var(--lime);width:10px;height:10px;border-radius:50%;margin-right:8px}
.main-nav{display:flex;gap:22px;align-items:center;flex:1}
.main-nav a,.sub-nav a{font-size:13px;color:#58635d;transition:.25s}
.main-nav a:hover,.main-nav a.active,.sub-nav a:hover{color:var(--ink)}
.main-nav a.active{font-weight:800}
.nav-cta,.btn-primary{background:var(--green);color:#fff;padding:11px 18px;border-radius:9px;font-weight:700;transition:.25s;display:inline-block}
.nav-cta:hover,.btn-primary:hover{background:#1b4436;transform:translateY(-2px)}
.sub-row{border-top:1px solid var(--line)}
.sub-nav{height:42px;display:flex;align-items:center;gap:25px;overflow:auto}
.sub-nav a.active{font-weight:800;border-bottom:2px solid var(--green);height:42px;display:flex;align-items:center;white-space:nowrap}
.menu-toggle{display:none;background:none;font-size:24px;padding:8px;min-width:44px;min-height:44px}
.page-banner{background:var(--deep);color:#fff;padding:76px 0 68px;position:relative;overflow:hidden}
.page-banner:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(19,34,29,.96),rgba(19,34,29,.72)),url("/assets/images/backpic/back-6.webp") center/cover}
.page-banner .container{position:relative}
.banner-grid{display:grid;grid-template-columns:1fr 360px;gap:70px;align-items:end}
.crumb{font-size:12px;color:#b8c9be;margin-bottom:23px}
.eyebrow{color:var(--green);font-size:12px;font-weight:800;letter-spacing:.16em}
.page-banner .eyebrow{color:var(--lime)}
.page-banner h1{font-size:clamp(40px,6vw,72px);line-height:1.08;letter-spacing:-.075em;margin:14px 0 22px;max-width:760px}
.banner-copy{font-size:17px;color:#cbd8d0;max-width:700px}
.banner-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.banner-stat{border:1px solid rgba(255,255,255,.2);padding:18px;border-radius:12px;background:rgba(255,255,255,.06)}
.banner-stat strong{display:block;font-size:28px;color:var(--lime);line-height:1.1}
.banner-stat span{font-size:12px;color:#bfcec4}
.section{padding:92px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:36px}
.section-head h2{font-size:clamp(27px,3vw,43px);line-height:1.2;letter-spacing:-.05em;max-width:650px;margin:0}
.section-head p{color:var(--muted);max-width:470px;margin:0}
.index-panel{background:#e8eee7;border-top:1px solid #c7d3c9;border-bottom:1px solid #c7d3c9;padding:25px 0}
.index-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.index-label{font-weight:800;margin-right:10px}
.filter{padding:9px 15px;border:1px solid #c8d3ca;background:var(--white);border-radius:30px;color:var(--muted);transition:.25s}
.filter:hover,.filter.active{background:var(--green);border-color:var(--green);color:#fff}
.list-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:22px;align-items:start}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.feature-card img{height:330px}
.feature-card .pad{padding:25px}
.tag{font-size:11px;color:var(--green);font-weight:800;letter-spacing:.04em}
.feature-card h3{font-size:26px;line-height:1.35;margin:10px 0}
.feature-card p,.list-item p{color:var(--muted);font-size:14px;margin:0}
.content-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.list-item{display:grid;grid-template-columns:122px 1fr;gap:19px;padding:19px;border-bottom:1px solid var(--line);transition:.25s}
.list-item:last-child{border-bottom:0}
.list-item:hover{background:#f2f6f0}
.list-item img{height:100px;border-radius:10px}
.list-item h3{font-size:18px;line-height:1.4;margin:6px 0}
.meta{display:flex;gap:12px;color:#8a948d;font-size:12px;margin-top:10px}
.more-link{display:inline-flex;margin-top:25px;color:var(--green);font-weight:800;border-bottom:2px solid var(--lime);padding-bottom:3px}
.param-section{background:#fff}
.param-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:75px;align-items:center}
.param-grid img{height:390px;border-radius:18px}
.param-copy h2{font-size:38px;line-height:1.2;letter-spacing:-.05em;margin:12px 0 16px}
.param-copy p{color:var(--muted)}
.param-bars{margin-top:25px}
.bar-row{margin:17px 0}
.bar-title{display:flex;justify-content:space-between;font-size:13px;font-weight:700}
.bar{height:7px;background:#e8ede8;border-radius:10px;overflow:hidden;margin-top:7px}
.bar i{display:block;height:100%;background:var(--green);border-radius:10px}
.scene-section{background:#eef2ec}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.scene{padding:25px;background:#fff;border:1px solid var(--line);min-height:195px;border-radius:14px;transition:.25s}
.scene:nth-child(2){margin-top:32px;background:var(--green);color:#fff}
.scene:nth-child(2) p{color:#d7e5dc}
.scene:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.scene-number{font-size:13px;color:var(--amber);font-weight:900}
.scene h3{font-size:20px;margin:22px 0 8px;line-height:1.35}
.scene p{font-size:13px;color:var(--muted);margin:0}
.faq-list{max-width:850px}
.faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;background:none;text-align:left;padding:20px 3px;display:flex;justify-content:space-between;font-weight:800;font-size:16px;min-height:60px}
.faq-q span{font-size:22px;color:var(--green);transition:.2s}
.faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease;padding-right:40px}
.faq-item.open .faq-a{max-height:170px;padding-bottom:20px}
.faq-item.open .faq-q span{transform:rotate(45deg)}
.contact-section{background:var(--lime);padding:82px 0}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}
.contact-section h2{font-size:clamp(34px,4vw,52px);line-height:1.15;letter-spacing:-.06em;margin:13px 0}
.contact-section p{max-width:430px}
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:12px;font-weight:800}
.field input,.field select,.field textarea{width:100%;border:1px solid rgba(23,27,26,.2);background:rgba(255,255,255,.7);border-radius:9px;padding:12px 13px;color:var(--ink);outline:none}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(40,93,75,.14)}
.form-submit{grid-column:1/-1;margin-top:5px;background:var(--deep);color:#fff;padding:13px 22px;border-radius:9px;font-weight:800;transition:.25s}
.form-submit:hover{background:var(--green);transform:translateY(-2px)}
.form-note{grid-column:1/-1;font-size:12px;color:#536357}
.site-footer{background:var(--deep);color:#fff;padding:62px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.3fr .8fr .8fr 1.25fr;gap:35px}
.footer-brand{font-size:20px;font-weight:900;letter-spacing:-.05em}
.site-footer h3{font-size:14px;margin:0 0 15px;color:var(--lime)}
.site-footer a{display:block;color:#bdcbc1;font-size:13px;margin:8px 0;transition:.2s}
.site-footer a:hover{color:var(--lime)}
.site-footer p{color:#bdcbc1;margin:7px 0;line-height:1.7}
.footer-bottom{border-top:1px solid #34483e;margin-top:44px;padding-top:20px;display:flex;justify-content:space-between;gap:15px;color:#91a59a;font-size:12px}
@media(max-width:900px){
 .main-nav{gap:13px}.nav-top{gap:14px}
 .banner-grid,.param-grid,.contact-grid,.list-layout{grid-template-columns:1fr;gap:35px}
 .banner-stats{max-width:500px}
 .scene-grid{grid-template-columns:1fr 1fr}
 .scene:nth-child(2){margin-top:0}
 .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
 .container{width:min(var(--max),calc(100% - 32px))}
 .nav-top{height:64px}.logo{font-size:16px}
 .menu-toggle{display:block;margin-left:auto}
 .main-nav{display:none;position:absolute;left:16px;right:16px;top:60px;background:var(--paper);padding:12px;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
 .main-nav.open{display:flex}
 .main-nav a{padding:12px;min-height:44px}
 .nav-cta{display:none}
 .sub-row{display:none}
 .page-banner{padding:52px 0 48px}
 .page-banner h1{font-size:42px}
 .banner-stats{grid-template-columns:1fr 1fr}
 .section{padding:65px 0}
 .section-head{display:block;margin-bottom:27px}
 .section-head p{margin-top:14px}
 .scene-grid,.footer-grid,.contact-form{grid-template-columns:1fr}
 .scene{min-height:auto}
 .list-item{grid-template-columns:92px 1fr;gap:13px}
 .list-item img{height:84px}
 .list-item h3{font-size:16px}
 .param-grid img{height:260px}
 .param-copy h2{font-size:32px}
 .field.full,.form-submit,.form-note{grid-column:auto}
 .footer-bottom{display:block;line-height:2}
}
@media(max-width:390px){
 .banner-stats{gap:8px}.banner-stat{padding:13px}.banner-stat strong{font-size:23px}
 .page-banner h1{font-size:37px}
}
@media(prefers-reduced-motion:reduce){
 *,*::before,*::after{scroll-behavior:auto!important;transition:none!important}
}