/* roulang page: index */
:root{
      --ink:#121510;
      --moss:#2d3529;
      --slate:#40463b;
      --paper:#f4f1e8;
      --white:#fcfbf6;
      --lime:#c8ff3d;
      --line:#d8d9d0;
      --muted:#697064;
      --danger:#a94436;
      --shadow:0 15px 32px rgba(38,42,32,.08);
      --radius:16px;
      --radius-lg:22px;
      --container:1200px;
      --ease:cubic-bezier(.2,.7,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    ::selection{background:var(--lime);color:var(--ink)}
    :focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    .container{width:min(calc(100% - 40px),var(--container));margin:auto}
    .site-header{height:78px;background:var(--ink);color:var(--white);position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(255,255,255,.13);transition:height .2s var(--ease),box-shadow .2s var(--ease)}
    .site-header.compact{height:64px;box-shadow:0 8px 24px rgba(0,0,0,.16)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:inline-flex;align-items:center;gap:11px;font-size:17px;font-weight:800;letter-spacing:-.5px;white-space:nowrap}
    .brand-mark{width:25px;height:25px;border:2px solid var(--lime);display:grid;place-items:center;position:relative}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--lime)}
    .brand-mark:before{width:9px;height:2px}
    .brand-mark:after{height:9px;width:2px}
    .main-nav{display:flex;align-items:stretch;height:100%;gap:25px}
    .main-nav a{display:flex;align-items:center;color:#c7c9c0;font-size:14px;position:relative;transition:color .2s var(--ease)}
    .main-nav a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--lime);box-shadow:0 0 10px rgba(200,255,61,.75);transition:width .2s var(--ease)}
    .main-nav a:hover,.main-nav a.active{color:#fff}
    .main-nav a:hover:after,.main-nav a.active:after{width:100%}
    .nav-cta,.button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--ink);border-radius:11px;padding:0 18px;background:var(--ink);color:var(--white);font-weight:700;font-size:14px;letter-spacing:.1px;position:relative;overflow:hidden;transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease)}
    .nav-cta{min-height:40px;border-color:var(--lime);padding:0 14px}
    .nav-cta:after,.button:after{content:"";width:7px;height:7px;border-top:2px solid var(--lime);border-right:2px solid var(--lime);transform:rotate(45deg)}
    .nav-cta:hover,.button:hover{transform:translateY(-2px);background:#20251d}
    .nav-cta:active,.button:active{transform:scale(.98)}
    .button.secondary{background:transparent;color:var(--ink);border-color:#9ba093}
    .button.secondary:after{border-color:var(--ink)}
    .button.secondary:hover{background:var(--white);border-color:var(--moss)}
    .menu-toggle{display:none;border:1px solid rgba(255,255,255,.35);background:transparent;color:var(--white);width:42px;height:40px;border-radius:10px}
    .hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:72px 0 58px;background:var(--paper)}
    .hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(18,21,16,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(18,21,16,.035) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,black,transparent)}
    .hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;align-items:end;gap:72px}
    .eyebrow,.section-kicker{display:flex;align-items:center;gap:10px;color:var(--slate);font-size:13px;font-weight:800;letter-spacing:1.2px}
    .eyebrow:before,.section-kicker:before{content:"";width:30px;height:2px;background:var(--lime)}
    h1,h2,h3,p{margin-top:0}
    h1{max-width:760px;margin:18px 0 22px;font-size:clamp(42px,5.3vw,66px);letter-spacing:-3px;line-height:1.12}
    .hero-copy{max-width:680px;color:var(--slate);font-size:17px;line-height:1.9;margin-bottom:29px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .text-link{display:inline-flex;align-items:center;gap:8px;padding:11px 4px;color:var(--ink);font-size:14px;font-weight:750;border-bottom:1px solid var(--ink)}
    .text-link:hover{color:var(--moss);border-color:var(--lime)}
    .search-panel{background:var(--ink);padding:25px;border-radius:var(--radius-lg);color:var(--white);box-shadow:var(--shadow);transform:translateY(18px)}
    .search-panel small{display:block;color:#bfc3b6;margin-bottom:13px;font-size:13px}
    .search-field{display:flex;background:var(--white);border-radius:10px;overflow:hidden}
    .search-field input{border:0;min-width:0;flex:1;padding:14px;color:var(--ink);outline:none;background:transparent}
    .search-field button{width:50px;border:0;background:var(--lime);color:var(--ink);font-size:20px;font-weight:800}
    .quick-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:17px}
    .quick-tags a{border:1px solid rgba(255,255,255,.25);padding:5px 9px;font-size:12px;color:#e7e9df;transition:.18s var(--ease)}
    .quick-tags a:hover{border-color:var(--lime);color:var(--lime)}
    main section{padding:110px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:38px}
    .section-head h2{font-size:clamp(30px,3.4vw,42px);line-height:1.18;letter-spacing:-1.5px;margin:11px 0 0}
    .section-intro{max-width:430px;margin:0;color:var(--slate);font-size:15px}
    .dashboard{padding-top:96px}
    .data-flow{display:grid;grid-template-columns:1.25fr .8fr .8fr;grid-template-rows:170px 145px;gap:14px}
    .metric{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative;overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
    .metric:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .metric.large{grid-row:span 2;display:flex;flex-direction:column;justify-content:space-between}
    .metric.wide{grid-column:span 2}
    .metric .num{font-size:clamp(40px,4.6vw,60px);font-weight:850;letter-spacing:-3px;line-height:1}
    .metric .num em{font-size:16px;font-style:normal;letter-spacing:0;background:linear-gradient(transparent 55%,var(--lime) 55%)}
    .metric-label{font-size:14px;font-weight:800;margin-top:10px}
    .metric-note{font-size:13px;line-height:1.65;color:var(--muted);margin:6px 0 0}
    .metric-index{position:absolute;right:18px;top:15px;color:#9da195;font-size:12px;letter-spacing:1px}
    .metric-line{height:5px;background:repeating-linear-gradient(90deg,var(--ink) 0 26px,transparent 26px 38px);opacity:.75;margin-top:28px}
    .matrix{background:#ece9df;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .matrix-grid{display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:14px;align-items:start}
    .index-card{background:var(--white);border:1px solid var(--line);padding:24px;border-radius:var(--radius);min-height:220px;position:relative;transition:.22s var(--ease)}
    .index-card:nth-child(2){margin-top:38px;min-height:280px}
    .index-card:nth-child(4){margin-top:-30px}
    .index-card:nth-child(5){margin-top:24px}
    .index-card:before{content:"";display:block;width:32px;height:3px;background:var(--lime);margin-bottom:27px;transition:width .22s var(--ease)}
    .index-card:hover{transform:translateY(-4px);border-color:var(--moss);box-shadow:var(--shadow)}
    .index-card:hover:before{width:70px}
    .card-no{position:absolute;right:20px;top:18px;font-size:12px;color:#858a7e;letter-spacing:1px}
    .tag{display:inline-block;border:1px solid var(--line);color:var(--slate);padding:3px 8px;font-size:11px;font-weight:700;letter-spacing:.5px}
    .index-card h3{font-size:21px;line-height:1.3;letter-spacing:-.6px;margin:15px 0 9px}
    .index-card p{font-size:14px;line-height:1.7;color:var(--muted);margin-bottom:15px}
    .card-foot{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:13px;font-size:12px;color:var(--slate)}
    .arrow{font-size:20px;line-height:1;transition:transform .2s var(--ease)}
    .index-card:hover .arrow{transform:translateX(5px)}
    .comparison{background:var(--ink);color:var(--white);position:relative;overflow:hidden}
    .comparison:before{content:"02 / ROUTE";position:absolute;right:-10px;top:7px;font-size:116px;font-weight:900;line-height:1;color:rgba(255,255,255,.035);letter-spacing:-8px}
    .comparison .section-kicker,.comparison .section-intro{color:#c6cabe}
    .comparison h2{color:var(--white)}
    .route-grid{position:relative;display:grid;grid-template-columns:1fr 74px 1fr;gap:18px;align-items:stretch}
    .route-card{background:var(--moss);border:1px solid rgba(255,255,255,.13);padding:31px;border-radius:var(--radius-lg)}
    .route-card.after{background:#1b2019}
    .state{display:inline-flex;background:rgba(200,255,61,.14);color:var(--lime);font-size:12px;font-weight:800;padding:4px 9px;margin-bottom:21px}
    .route-card h3{font-size:25px;margin-bottom:17px;line-height:1.25}
    .route-card ul{padding:0;margin:0;list-style:none}
    .route-card li{padding:11px 0;border-top:1px solid rgba(255,255,255,.12);font-size:14px;color:#e4e6de}
    .route-card li:before{content:"—";color:var(--lime);margin-right:10px}
    .route-divider{display:flex;align-items:center;justify-content:center;position:relative}
    .route-divider:before{content:"";height:100%;border-left:1px dashed rgba(200,255,61,.55)}
    .route-divider span{position:absolute;background:var(--lime);width:32px;height:32px;color:var(--ink);border-radius:50%;display:grid;place-items:center;font-weight:900}
    .faq-layout{display:grid;grid-template-columns:.76fr 1.24fr;gap:90px}
    .faq-aside{border-top:2px solid var(--ink);padding-top:19px}
    .faq-big{font-size:88px;line-height:.9;letter-spacing:-6px;font-weight:900;color:var(--lime);text-shadow:2px 2px 0 var(--ink)}
    .faq-aside h2{font-size:37px;line-height:1.18;letter-spacing:-1.5px;margin:17px 0}
    .faq-aside p{color:var(--slate);font-size:15px}
    .faq-item{border-top:1px solid var(--line)}
    .faq-item:last-child{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;border:0;background:none;padding:21px 2px;display:flex;justify-content:space-between;align-items:center;text-align:left;color:var(--ink);font-weight:800;font-size:17px;line-height:1.5}
    .faq-question span:last-child{font-size:25px;font-weight:400;transition:transform .18s var(--ease)}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .faq-answer{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s var(--ease)}
    .faq-answer > div{overflow:hidden}
    .faq-answer p{color:var(--slate);font-size:14px;margin:0;padding:0 0 20px;line-height:1.85}
    .faq-item.open .faq-answer{grid-template-rows:1fr}
    .contact-area{padding-top:0}
    .form-shell{display:grid;grid-template-columns:.76fr 1.24fr;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
    .form-side{background:var(--ink);color:var(--white);padding:42px}
    .form-side .section-kicker{color:#c7c9bf}
    .form-side h2{font-size:34px;line-height:1.2;letter-spacing:-1px;margin:18px 0}
    .form-side p{color:#c7cabf;font-size:14px;line-height:1.85}
    .mini-steps{list-style:none;padding:0;margin:30px 0 0;border-top:1px solid rgba(255,255,255,.18)}
    .mini-steps li{padding:13px 0;border-bottom:1px solid rgba(255,255,255,.18);font-size:13px;color:#e5e7df}
    .mini-steps b{color:var(--lime);display:inline-block;width:30px}
    .feedback-form{padding:40px}
    .form-top{display:flex;justify-content:space-between;gap:15px;align-items:baseline;margin-bottom:22px}
    .form-top h3{font-size:23px;margin:0}
    .required-note{font-size:12px;color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}
    .field.full{grid-column:1/-1}
    label{display:block;color:var(--slate);font-size:13px;font-weight:750;margin-bottom:7px}
    label i{color:var(--danger);font-style:normal}
    input,select,textarea{width:100%;background:#f8f7f1;border:1px solid var(--line);border-radius:10px;color:var(--ink);outline:none;padding:11px 13px;min-height:47px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease)}
    textarea{min-height:96px;resize:vertical}
    input:focus,select:focus,textarea:focus{background:var(--white);border-color:var(--moss);box-shadow:0 0 0 4px rgba(200,255,61,.28)}
    .privacy{font-size:12px;color:var(--muted);margin:16px 0}
    .form-status{font-size:13px;min-height:21px;margin:12px 0 0;color:var(--slate)}
    .form-status.error{color:var(--danger)}
    .form-status.success{color:#36551f}
    .site-footer{background:var(--ink);color:#d9dcd1;padding:57px 0 20px;margin-top:110px}
    .footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr;gap:50px;padding-bottom:41px;border-bottom:1px solid rgba(255,255,255,.15)}
    .footer-brand{color:#fff;margin-bottom:15px}
    .footer-text{max-width:400px;color:#aeb3a5;font-size:13px;margin:0}
    .footer-title{font-size:12px;letter-spacing:1px;color:var(--lime);margin:3px 0 14px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{font-size:14px;color:#d6d9ce;transition:color .18s var(--ease)}
    .footer-links a:hover{color:var(--lime)}
    .copyright{padding-top:17px;display:flex;justify-content:space-between;gap:15px;color:#92988b;font-size:12px}
    @media(max-width:960px){
      .hero-grid,.faq-layout{grid-template-columns:1fr;gap:35px}
      .search-panel{transform:none}
      .matrix-grid{grid-template-columns:1fr 1fr}
      .index-card:nth-child(2),.index-card:nth-child(4),.index-card:nth-child(5){margin-top:0}
      .faq-layout{gap:36px}
      .form-shell{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:768px){
      .site-header{height:68px}
      .main-nav,.nav-cta{display:none}
      .menu-toggle{display:block}
      .site-header.menu-open .main-nav{position:absolute;display:flex;height:auto;flex-direction:column;align-items:stretch;gap:0;left:0;right:0;top:68px;background:var(--ink);padding:8px 20px 20px;border-bottom:1px solid rgba(255,255,255,.15)}
      .site-header.menu-open .main-nav a{height:47px;border-bottom:1px solid rgba(255,255,255,.1)}
      .site-header.menu-open .main-nav a:after{bottom:0}
      h1{letter-spacing:-2px}
      main section{padding:72px 0}
      .section-head{display:block;margin-bottom:28px}
      .section-intro{margin-top:14px}
      .data-flow{grid-template-columns:1fr 1fr;grid-template-rows:auto}
      .metric.large{grid-row:span 1;grid-column:span 2;min-height:210px}
      .metric.wide{grid-column:span 2}
      .route-grid{grid-template-columns:1fr;gap:14px}
      .route-divider{height:42px}
      .route-divider:before{height:100%;border-left:1px dashed rgba(200,255,61,.55)}
      .form-side,.feedback-form{padding:28px}
      .site-footer{margin-top:72px}
    }
    @media(max-width:520px){
      .container{width:min(calc(100% - 36px),var(--container))}
      .brand{font-size:14px}
      .brand-mark{width:22px;height:22px}
      .hero{padding:53px 0 45px}
      .hero-copy{font-size:15px}
      .hero-actions .button{width:100%}
      .data-flow,.matrix-grid,.form-grid{grid-template-columns:1fr}
      .metric.large,.metric.wide{grid-column:span 1}
      .metric{min-height:145px}
      .matrix-grid .index-card{min-height:auto}
      .route-card{padding:24px}
      .faq-big{font-size:72px}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:6px}
    }
    @media(prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}
    }

/* roulang page: category2 */
:root{
 --ink:#121510;--moss:#2d3529;--slate:#40463b;--paper:#f4f1e8;--white:#fcfbf6;
 --lime:#c8ff3d;--line:#d8d9d0;--muted:#697064;--danger:#a94436;
 --shadow:0 15px 32px rgba(38,42,32,.08);--radius:16px;--radius-lg:22px;
 --container:1200px;--ease:cubic-bezier(.2,.7,.2,1)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;font-size:16px;line-height:1.8}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%}
button,input,select,textarea{outline:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(200,255,61,.7);outline-offset:3px}
.container{width:min(calc(100% - 40px),var(--container));margin:auto}
.site-header{height:78px;background:var(--ink);color:var(--white);position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(255,255,255,.13);transition:height .2s var(--ease),box-shadow .2s var(--ease)}
.site-header.compact{height:64px;box-shadow:0 8px 24px rgba(0,0,0,.16)}
.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:inline-flex;align-items:center;gap:11px;font-size:17px;font-weight:800;letter-spacing:-.5px;white-space:nowrap}
.brand-mark{width:25px;height:25px;border:2px solid var(--lime);display:grid;place-items:center;position:relative;flex:0 0 auto}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--lime)}
.brand-mark:before{width:9px;height:2px}.brand-mark:after{height:9px;width:2px}
.main-nav{display:flex;align-items:stretch;height:100%;gap:25px}
.main-nav a{display:flex;align-items:center;color:#c7c9c0;font-size:14px;position:relative;transition:color .2s var(--ease)}
.main-nav a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--lime);box-shadow:0 0 10px rgba(200,255,61,.75);transition:width .2s var(--ease)}
.main-nav a:hover,.main-nav a.active{color:#fff}.main-nav a:hover:after,.main-nav a.active:after{width:100%}
.nav-cta,.button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--ink);border-radius:11px;padding:0 18px;background:var(--ink);color:var(--white);font-weight:700;font-size:14px;letter-spacing:.1px;position:relative;overflow:hidden;transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease)}
.nav-cta{min-height:40px;border-color:var(--lime);padding:0 14px}
.nav-cta:after,.button:after{content:"";width:7px;height:7px;border-top:2px solid var(--lime);border-right:2px solid var(--lime);transform:rotate(45deg)}
.nav-cta:hover,.button:hover{transform:translateY(-2px);background:#20251d}.nav-cta:active,.button:active{transform:scale(.98)}
.button.secondary{background:transparent;color:var(--ink);border-color:#9ba093}.button.secondary:after{border-color:var(--ink)}.button.secondary:hover{background:var(--white);border-color:var(--moss)}
.menu-toggle{display:none;border:1px solid rgba(255,255,255,.35);background:transparent;color:var(--white);width:42px;height:40px;border-radius:10px;font-size:19px}
.inner-hero{background:var(--ink);color:var(--white);position:relative;overflow:hidden;padding:65px 0 68px}
.inner-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(200,255,61,.09) 1px,transparent 1px),linear-gradient(rgba(200,255,61,.06) 1px,transparent 1px);background-size:45px 45px;mask-image:linear-gradient(90deg,black,transparent 85%)}
.inner-hero .container{position:relative}
.breadcrumb{display:flex;gap:9px;align-items:center;color:#bcc0b5;font-size:13px;margin-bottom:25px}.breadcrumb span{color:var(--lime)}
.hero-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:70px;align-items:end}
.eyebrow{color:var(--lime);font-size:12px;font-weight:800;letter-spacing:1.5px;display:flex;align-items:center;gap:10px}.eyebrow:before{content:"";width:28px;height:2px;background:var(--lime)}
h1{font-size:clamp(38px,5vw,62px);line-height:1.15;letter-spacing:-2.5px;margin:14px 0 18px}
.hero-copy{max-width:650px;color:#d3d6cd;margin:0;font-size:16px;line-height:1.9}
.hero-back{display:inline-flex;align-items:center;justify-content:space-between;border:1px solid rgba(255,255,255,.24);padding:15px 17px;color:#f6f7f1;transition:.2s var(--ease);font-size:14px}.hero-back:hover{border-color:var(--lime);color:var(--lime);transform:translateX(-3px)}
.hero-back b{font-size:19px;font-weight:400;margin-right:10px}
.section{padding:106px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:35px}
.section-kicker{display:flex;align-items:center;gap:10px;color:var(--slate);font-size:13px;font-weight:800;letter-spacing:1.2px}.section-kicker:before{content:"";width:30px;height:2px;background:var(--lime)}
.section-head h2{font-size:clamp(29px,3.5vw,42px);line-height:1.2;letter-spacing:-1.5px;margin:10px 0 0}.section-head p{max-width:415px;color:var(--slate);font-size:15px;margin:0}
.tag-field{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:25px 0;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.field-caption{font-size:13px;color:var(--muted);font-weight:800;margin-right:8px;letter-spacing:.6px}
.topic-tag{border:1px solid #bfc3b7;background:var(--white);padding:8px 12px;font-size:13px;font-weight:700;transition:.18s var(--ease);position:relative}
.topic-tag:before{content:"";width:5px;height:5px;background:var(--lime);display:inline-block;margin-right:7px;vertical-align:middle}.topic-tag:hover,.topic-tag.active{border-color:var(--moss);background:#eef0e5;transform:translateY(-2px)}
.topic-tag.active{color:var(--ink)}
.board{display:grid;grid-template-columns:1.08fr 1.08fr .76fr;grid-auto-rows:minmax(205px,auto);gap:14px;margin-top:44px}
.topic-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:25px;display:flex;flex-direction:column;position:relative;overflow:hidden;transition:.22s var(--ease)}
.topic-card:hover{transform:translateY(-4px);border-color:var(--moss);box-shadow:var(--shadow)}.topic-card:hover .card-arrow{transform:translateX(5px);color:var(--ink)}
.topic-card.featured{grid-column:span 2;min-height:315px;background:#ecece2;padding:32px}.topic-card.tall{grid-row:span 2;background:var(--moss);color:var(--white)}.topic-card.wide{grid-column:span 2}
.topic-card:after{content:"";position:absolute;bottom:0;left:0;width:0;height:3px;background:var(--lime);transition:width .25s var(--ease)}.topic-card:hover:after{width:100%}
.card-top{display:flex;justify-content:space-between;gap:15px;align-items:start}.card-no{font-size:12px;color:var(--muted);letter-spacing:1px}.tall .card-no{color:#bfc6b8}
.card-label{font-size:11px;font-weight:800;letter-spacing:.7px;border:1px solid var(--line);padding:3px 7px;color:var(--slate)}.tall .card-label{border-color:rgba(255,255,255,.28);color:#eef0e7}
.topic-card h3{font-size:clamp(21px,2.3vw,29px);letter-spacing:-1px;line-height:1.28;margin:25px 0 10px}.topic-card:not(.featured) h3{font-size:21px;margin-top:19px}
.topic-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.75;max-width:44em}.tall p{color:#d2d7cc}
.card-bottom{margin-top:auto;padding-top:22px;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}.tall .card-bottom{color:#c6cdc1}
.card-arrow{font-size:20px;line-height:1;transition:.2s var(--ease)}
.read-path{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.path-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}.path-title h2{font-size:clamp(30px,3.6vw,43px);line-height:1.18;letter-spacing:-1.5px;margin:11px 0}.path-title p{color:var(--slate);margin:0;max-width:360px;font-size:15px}
.steps{border-left:1px solid var(--line);padding-left:35px}.step{position:relative;padding:0 0 27px 24px}.step:last-child{padding-bottom:0}.step:before{content:"";position:absolute;left:-41px;top:7px;width:11px;height:11px;background:var(--paper);border:2px solid var(--moss);border-radius:50%}.step:first-child:before{background:var(--lime);border-color:var(--lime)}
.step-no{font-size:12px;color:var(--muted);letter-spacing:1.2px;font-weight:800}.step h3{font-size:20px;line-height:1.3;margin:5px 0}.step p{font-size:14px;color:var(--slate);margin:0;max-width:600px}
.faq-feedback{padding:106px 0}.bottom-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:55px}
.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;padding:19px 0;background:none;border:0;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:22px;color:var(--ink);font-size:16px;font-weight:750}.faq-question span:last-child{font-size:25px;font-weight:300;transition:transform .2s var(--ease)}.faq-answer{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s var(--ease)}.faq-answer>div{overflow:hidden}.faq-answer p{color:var(--slate);font-size:14px;margin:0 0 20px;padding-right:25px}.faq-item.open .faq-answer{grid-template-rows:1fr}.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.feedback-box{background:var(--ink);padding:34px;border-radius:var(--radius-lg);color:var(--white);position:relative;overflow:hidden}.feedback-box:before{content:"";position:absolute;width:150px;height:150px;border:1px solid rgba(200,255,61,.3);border-radius:50%;right:-55px;top:-60px}.feedback-box h2{font-size:30px;line-height:1.25;letter-spacing:-1px;margin:9px 0 12px;position:relative}.feedback-box p{color:#cbd0c4;font-size:14px;position:relative;margin:0 0 23px}.feedback-box .button{background:var(--white);color:var(--ink);border-color:var(--white)}.feedback-box .button:hover{background:var(--lime)}
.feedback-notes{margin:24px 0 0;padding:0;list-style:none;border-top:1px solid rgba(255,255,255,.16)}.feedback-notes li{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.16);font-size:13px;color:#d8ddd2}.feedback-notes li:before{content:"/";color:var(--lime);font-weight:800;margin-right:9px}
.site-footer{background:var(--ink);color:var(--white);padding:58px 0 23px}.footer-grid{display:grid;grid-template-columns:1.5fr .75fr .75fr;gap:45px}.footer-brand{margin-bottom:17px}.footer-text{color:#bfc4b8;max-width:380px;font-size:14px;line-height:1.8;margin:0}.footer-title{font-size:13px;color:var(--lime);font-weight:800;letter-spacing:1px;margin:4px 0 14px}.footer-links{display:grid;gap:9px}.footer-links a{color:#d5d8cf;font-size:14px;transition:.18s var(--ease)}.footer-links a:hover{color:var(--lime);transform:translateX(3px)}.copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:45px;padding-top:20px;display:flex;justify-content:space-between;gap:15px;color:#aeb5a7;font-size:12px}.copyright a{color:#dce1d8}.copyright a:hover{color:var(--lime)}
.mobile-panel{display:none}
@media(max-width:1200px){.hero-layout{gap:35px}.board{grid-template-columns:1fr 1fr .72fr}.section,.faq-feedback{padding:88px 0}}
@media(max-width:960px){.main-nav{gap:16px}.nav-wrap{gap:16px}.hero-layout{grid-template-columns:1fr}.hero-back{width:max-content}.board{grid-template-columns:1fr 1fr}.topic-card.tall{grid-row:span 1}.topic-card.featured,.topic-card.wide{grid-column:span 2}.path-grid,.bottom-grid{grid-template-columns:1fr;gap:38px}.footer-grid{grid-template-columns:1.2fr 1fr 1fr}}
@media(max-width:768px){.site-header{height:68px}.main-nav,.nav-cta{display:none}.menu-toggle{display:block}.brand{font-size:15px}.mobile-panel{position:absolute;display:none;left:0;right:0;top:68px;background:var(--ink);border-top:1px solid rgba(255,255,255,.15);padding:14px 20px 20px;box-shadow:0 15px 25px rgba(0,0,0,.18)}.mobile-panel.open{display:grid}.mobile-panel a{padding:11px 0;border-bottom:1px solid rgba(255,255,255,.11);color:#d9ddd5;font-size:14px}.mobile-panel a.active{color:var(--lime)}.mobile-panel .nav-cta{display:inline-flex;margin-top:14px;width:max-content}.inner-hero{padding:48px 0 52px}.section,.faq-feedback{padding:70px 0}.section-head{display:block;margin-bottom:25px}.section-head p{margin-top:15px}.tag-field{gap:8px}.topic-tag{padding:7px 9px}.board{margin-top:30px}.footer-grid{grid-template-columns:1fr 1fr;gap:34px}.footer-grid>div:first-child{grid-column:span 2}.copyright{display:block}.copyright span{display:block}.copyright span+span{margin-top:6px}}
@media(max-width:520px){.container{width:min(calc(100% - 36px),var(--container))}.brand{font-size:13px;letter-spacing:-.7px}.brand-mark{width:22px;height:22px}.inner-hero{padding:39px 0 43px}h1{letter-spacing:-1.6px}.hero-copy{font-size:15px}.section,.faq-feedback{padding:58px 0}.board{grid-template-columns:1fr;gap:12px}.topic-card.featured,.topic-card.wide{grid-column:span 1}.topic-card.featured{min-height:270px;padding:25px}.topic-card{padding:22px}.topic-card h3{font-size:22px}.topic-card:not(.featured) h3{font-size:20px}.tag-field{align-items:flex-start}.field-caption{width:100%;margin-bottom:2px}.steps{padding-left:27px}.step{padding-left:18px}.step:before{left:-33px}.feedback-box{padding:27px 23px}.feedback-box .button{width:100%}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-text{max-width:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* roulang page: category1 */
:root{
 --ink:#121510;--moss:#2d3529;--slate:#40463b;--paper:#f4f1e8;--white:#fcfbf6;
 --lime:#c8ff3d;--line:#d8d9d0;--muted:#697064;--danger:#a94436;
 --shadow:0 15px 32px rgba(38,42,32,.08);--radius:16px;--radius-lg:22px;
 --container:1200px;--ease:cubic-bezier(.2,.7,.2,1)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;font-size:16px;line-height:1.8}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%}
::selection{background:var(--lime);color:var(--ink)}
.container{width:min(calc(100% - 40px),var(--container));margin:auto}
.site-header{height:78px;background:var(--ink);color:var(--white);position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(255,255,255,.13);transition:height .2s var(--ease),box-shadow .2s var(--ease)}
.site-header.compact{height:64px;box-shadow:0 8px 24px rgba(0,0,0,.16)}
.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:inline-flex;align-items:center;gap:11px;font-size:17px;font-weight:800;letter-spacing:-.5px;white-space:nowrap}
.brand-mark{width:25px;height:25px;border:2px solid var(--lime);display:grid;place-items:center;position:relative;flex:0 0 auto}
.brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--lime)}
.brand-mark:before{width:9px;height:2px}.brand-mark:after{height:9px;width:2px}
.main-nav{display:flex;align-items:stretch;height:100%;gap:25px}
.main-nav a{display:flex;align-items:center;color:#c7c9c0;font-size:14px;position:relative;transition:color .2s var(--ease)}
.main-nav a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--lime);box-shadow:0 0 10px rgba(200,255,61,.75);transition:width .2s var(--ease)}
.main-nav a:hover,.main-nav a.active{color:#fff}.main-nav a:hover:after,.main-nav a.active:after{width:100%}
.nav-cta,.button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--ink);border-radius:11px;padding:0 18px;background:var(--ink);color:var(--white);font-weight:700;font-size:14px;letter-spacing:.1px;position:relative;overflow:hidden;transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease)}
.nav-cta{min-height:40px;border-color:var(--lime);padding:0 14px}
.nav-cta:after,.button:after{content:"";width:7px;height:7px;border-top:2px solid var(--lime);border-right:2px solid var(--lime);transform:rotate(45deg)}
.nav-cta:hover,.button:hover{transform:translateY(-2px);background:#20251d}.nav-cta:active,.button:active{transform:scale(.98)}
.button.secondary{background:transparent;color:var(--ink);border-color:#9ba093}.button.secondary:after{border-color:var(--ink)}.button.secondary:hover{background:var(--white);border-color:var(--moss)}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(200,255,61,.75);outline-offset:3px}
.menu-toggle{display:none;border:1px solid rgba(255,255,255,.35);background:transparent;color:var(--white);width:42px;height:40px;border-radius:10px;font-size:18px}
.page-hero{position:relative;overflow:hidden;padding:68px 0 62px;border-bottom:1px solid var(--line);background:var(--paper)}
.page-hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(18,21,16,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(18,21,16,.035) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,black,transparent)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:end}
.breadcrumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);margin-bottom:28px}.breadcrumb span{color:#9da195}.breadcrumb a:hover{color:var(--ink)}
.eyebrow,.section-kicker{display:flex;align-items:center;gap:10px;color:var(--slate);font-size:13px;font-weight:800;letter-spacing:1.2px}.eyebrow:before,.section-kicker:before{content:"";width:30px;height:2px;background:var(--lime)}
h1,h2,h3,p{margin-top:0}h1{font-size:clamp(38px,5.2vw,64px);line-height:1.14;letter-spacing:-2.4px;margin:14px 0 20px;max-width:760px}h2{font-size:clamp(29px,3.5vw,42px);line-height:1.18;letter-spacing:-1.5px;margin:11px 0 0}h3{font-size:20px;line-height:1.34;letter-spacing:-.5px}
.hero-copy{max-width:690px;color:var(--slate);font-size:16px;line-height:1.9;margin:0}
.hero-stamp{background:var(--ink);color:var(--white);border-radius:var(--radius-lg);padding:27px;box-shadow:var(--shadow);position:relative;overflow:hidden}.hero-stamp:after{content:"INDEX / 01";position:absolute;right:-9px;bottom:5px;font-size:38px;letter-spacing:-2px;font-weight:800;color:rgba(255,255,255,.08)}
.stamp-line{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.15);font-size:13px;color:#cfd3c6}.stamp-line strong{font-size:23px;color:var(--lime);letter-spacing:-1px}.stamp-line:last-child{border-bottom:0;padding-bottom:0}
main section{padding:100px 0}.filter-section{padding-top:44px;padding-bottom:66px}
.filter-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px;display:grid;grid-template-columns:1.55fr .9fr .9fr auto;gap:12px;box-shadow:0 10px 26px rgba(38,42,32,.05)}
.field{position:relative}.field label{display:block;font-size:12px;font-weight:800;color:var(--slate);margin:0 0 6px}.field input,.field select{width:100%;height:47px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);padding:0 13px;outline:0;transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}.field input:focus,.field select:focus{border-color:var(--moss);box-shadow:0 0 0 4px rgba(200,255,61,.25)}.filter-action{align-self:end;min-height:47px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:34px}.section-intro{max-width:410px;margin:0;color:var(--slate);font-size:15px}
.index-rail{display:flex;gap:0;overflow-x:auto;border-top:1px solid var(--line);border-bottom:1px solid var(--line);scrollbar-width:thin}.rail-item{min-width:218px;padding:19px 20px;border-right:1px solid var(--line);background:transparent;transition:.2s var(--ease)}.rail-item:first-child{border-left:1px solid var(--line)}.rail-item span{display:block;font-size:11px;font-weight:800;letter-spacing:1px;color:var(--muted)}.rail-item strong{display:block;margin-top:6px;font-size:16px}.rail-item:hover,.rail-item.current{background:var(--ink);color:var(--white)}.rail-item.current span{color:var(--lime)}
.catalog-layout{display:grid;grid-template-columns:minmax(0,1fr) 275px;gap:45px;align-items:start}.catalog-list{border-top:1px solid var(--line)}
.catalog-card{display:grid;grid-template-columns:68px minmax(0,1fr) 40px;gap:22px;align-items:start;padding:28px 6px 27px;border-bottom:1px solid var(--line);transition:.22s var(--ease)}.catalog-card:hover{padding-left:17px;padding-right:17px;background:var(--white);border-color:var(--moss);box-shadow:var(--shadow)}
.catalog-no{font-size:13px;font-weight:800;letter-spacing:1.5px;color:var(--muted);padding-top:6px}.catalog-card h3{margin:9px 0 8px;font-size:22px}.catalog-card p{max-width:610px;margin:0;color:var(--muted);font-size:14px;line-height:1.78}.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin-top:15px;font-size:12px;color:var(--muted)}.tag{display:inline-block;border:1px solid var(--line);color:var(--slate);padding:3px 8px;font-size:11px;font-weight:700;letter-spacing:.5px;background:var(--white)}.catalog-card:hover .tag{border-color:#a5ad99}
.arrow-link{width:38px;height:38px;border:1px solid var(--line);display:grid;place-items:center;margin-top:10px;font-size:19px;line-height:1;transition:.2s var(--ease)}.catalog-card:hover .arrow-link{transform:translateX(5px);border-color:var(--moss);background:var(--lime)}
.side-index{position:sticky;top:95px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px}.side-index h3{margin:0 0 15px;font-size:18px}.side-index p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:18px}.side-links{display:grid;border-top:1px solid var(--line)}.side-links a{padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;display:flex;justify-content:space-between;transition:.18s var(--ease)}.side-links a:after{content:"↗";color:var(--muted)}.side-links a:hover{color:var(--moss);padding-left:5px}.side-links a:hover:after{color:var(--ink)}
.notice-band{background:var(--ink);color:var(--white);padding:47px 0!important}.notice-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:60px;align-items:center}.notice-grid h2{color:var(--white);margin:10px 0 0}.notice-grid p{color:#c7cbbf;margin:0;max-width:660px;font-size:15px}.notice-points{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.notice-points span{font-size:12px;border:1px solid rgba(255,255,255,.25);padding:5px 9px}.notice-points span:before{content:"•";color:var(--lime);padding-right:7px}
.continue-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:38px 0 0}.continue-wrap p{margin:0;color:var(--slate);font-size:14px}
.faq-mini{padding-top:78px}.faq-mini-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}.faq-intro p{color:var(--slate);max-width:350px}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;padding:18px 0;background:none;border:0;color:var(--ink);display:flex;align-items:center;justify-content:space-between;text-align:left;font-weight:800;font-size:16px;gap:20px}.faq-question b{font-size:22px;font-weight:400;color:var(--moss);transition:transform .18s var(--ease)}.faq-answer{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s var(--ease)}.faq-answer>div{overflow:hidden}.faq-answer p{margin:0;padding:0 35px 0 0;color:var(--slate);font-size:14px}.faq-item.open .faq-answer{grid-template-rows:1fr}.faq-item.open .faq-answer p{padding-bottom:20px}.faq-item.open .faq-question b{transform:rotate(45deg)}
.feedback{padding-top:50px}.feedback-box{display:grid;grid-template-columns:1fr auto;gap:35px;align-items:center;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px 38px;box-shadow:var(--shadow)}.feedback-box h2{font-size:28px;margin:0 0 8px}.feedback-box p{margin:0;color:var(--slate);font-size:14px;max-width:650px}
.site-footer{margin-top:100px;background:var(--ink);color:var(--white);padding:61px 0 24px}.footer-grid{display:grid;grid-template-columns:1.45fr .7fr .7fr;gap:55px;padding-bottom:48px}.footer-brand{margin-bottom:16px}.footer-text{max-width:380px;color:#b9bdb1;font-size:14px;line-height:1.8;margin:0}.footer-title{font-size:13px;font-weight:800;letter-spacing:.8px;color:var(--lime);margin-bottom:14px}.footer-links{display:grid;gap:9px}.footer-links a{color:#d9dcd4;font-size:14px;transition:color .18s var(--ease),padding-left .18s var(--ease)}.footer-links a:hover{color:var(--lime);padding-left:4px}.copyright{border-top:1px solid rgba(255,255,255,.15);padding-top:19px;display:flex;justify-content:space-between;gap:15px;color:#aeb4a7;font-size:12px}.copyright a{color:#dbe0d3}.copyright a:hover{color:var(--lime)}
@media(max-width:1200px){.hero-inner{gap:40px}.catalog-layout{gap:30px}}
@media(max-width:960px){.filter-panel{grid-template-columns:1fr 1fr}.filter-action{width:100%}.hero-inner,.catalog-layout,.faq-mini-grid{grid-template-columns:1fr}.hero-stamp{max-width:530px}.side-index{position:relative;top:auto;display:grid;grid-template-columns:.7fr 1.3fr;gap:22px}.side-index h3{margin:0}.side-index p{margin:8px 0 0}.side-links{border-top:0}.notice-grid{grid-template-columns:1fr;gap:20px}.footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:30px}}
@media(max-width:768px){.site-header{height:66px}.brand{font-size:14px}.main-nav,.nav-cta{display:none}.menu-toggle{display:block}.mobile-panel{display:none;position:absolute;top:66px;left:0;right:0;background:var(--ink);border-top:1px solid rgba(255,255,255,.15);padding:12px 20px 20px}.mobile-panel.open{display:grid}.mobile-panel a{padding:13px 0;border-bottom:1px solid rgba(255,255,255,.13);color:#d7dacf;font-size:15px}.mobile-panel a.active{color:var(--lime)}.mobile-panel .nav-cta{display:inline-flex;margin-top:15px;width:max-content}.page-hero{padding:50px 0}.hero-inner{gap:28px}main section{padding:70px 0}.filter-section{padding-top:30px;padding-bottom:45px}.section-head{display:block;margin-bottom:25px}.section-intro{margin-top:15px}.catalog-card{grid-template-columns:52px minmax(0,1fr) 34px;gap:12px}.catalog-card h3{font-size:19px}.catalog-card:hover{padding-left:10px;padding-right:10px}.side-index{grid-template-columns:1fr}.notice-band{padding:38px 0!important}.feedback-box{grid-template-columns:1fr;padding:28px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block}.copyright span+span{margin-top:6px}}
@media(max-width:480px){.container{width:min(calc(100% - 36px),var(--container))}h1{font-size:38px;letter-spacing:-1.7px}.filter-panel{grid-template-columns:1fr;padding:14px}.filter-action{width:100%}.filter-action.button{width:100%}.catalog-card{grid-template-columns:42px minmax(0,1fr)}.catalog-card .arrow-link{display:none}.catalog-no{font-size:11px}.catalog-card p{font-size:13px}.rail-item{min-width:185px}.feedback-box{padding:24px}.feedback-box .button{width:100%}.footer-grid{grid-template-columns:1fr;gap:30px}.footer-grid>div:first-child{grid-column:auto}.site-footer{margin-top:72px}.brand-mark{width:22px;height:22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}