/* roulang page: index */
:root{
      --primary:#3478E5;
      --primary-dark:#245fc0;
      --secondary:#20A7A0;
      --secondary-soft:#E8FAF7;
      --text:#172033;
      --muted:#536174;
      --weak:#7B8798;
      --cloud:#F7FAFD;
      --paper:#FFFFFF;
      --line:#E3EAF3;
      --orange:#FFB45C;
      --orange-soft:#FFF3E3;
      --blue-soft:#ECF4FF;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:28px;
      --shadow:0 18px 45px rgba(23,32,51,.08);
      --shadow-hover:0 22px 58px rgba(47,111,214,.16);
      --nav-h:82px;
      --ease:all .24s ease;
      --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--text);
      background:var(--paper);
      line-height:1.75;
      overflow-x:hidden;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover,a:focus{color:var(--primary)}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea{font-family:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(52,120,229,.18)}
    :focus-visible{outline:3px solid rgba(52,120,229,.22);outline-offset:3px;border-radius:10px}
    .site-container{
      width:min(1180px,calc(100% - 40px));
      margin-inline:auto;
    }
    .section{
      padding:92px 0;
      position:relative;
    }
    .section-compact{padding:68px 0}
    .section-cloud{background:var(--cloud)}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:var(--blue-soft);
      color:var(--primary-dark);
      font-size:13px;
      font-weight:700;
      line-height:1.2;
      margin-bottom:16px;
    }
    .eyebrow::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--secondary);
      box-shadow:0 0 0 5px rgba(32,167,160,.12);
    }
    h1,h2,h3,h4{color:var(--text);line-height:1.18;margin:0 0 16px;font-weight:800;letter-spacing:-.02em}
    h1{font-size:clamp(34px,5vw,56px)}
    h2{font-size:clamp(28px,3.2vw,38px)}
    h3{font-size:22px}
    p{margin:0 0 16px;color:var(--muted);font-size:16px}
    .lead{font-size:18px;line-height:1.85;color:#465468}
    .muted{color:var(--weak)}
    .top-strip{
      background:linear-gradient(90deg,#F4FAFF,#F8FEFC);
      border-bottom:1px solid var(--line);
      color:#496075;
      font-size:13px;
    }
    .top-strip .site-container{
      min-height:36px;
      display:flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      text-align:center;
    }
    .top-strip strong{color:var(--primary-dark)}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.92);
      backdrop-filter:saturate(180%) blur(14px);
      border-bottom:1px solid rgba(227,234,243,.9);
    }
    .nav-shell{
      height:var(--nav-h);
      display:grid;
      grid-template-columns:1fr auto 1fr;
      align-items:center;
      gap:22px;
    }
    .nav-left,.nav-right{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .nav-left{justify-content:flex-end}
    .nav-right{justify-content:flex-start}
    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      min-height:38px;
      padding:8px 13px;
      border-radius:999px;
      color:#2B3548;
      font-size:15px;
      font-weight:650;
      white-space:nowrap;
    }
    .nav-link:hover{background:var(--blue-soft);color:var(--primary)}
    .nav-link.active{
      background:rgba(52,120,229,.1);
      color:var(--primary-dark);
    }
    .brand{
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      min-width:228px;
      color:var(--text);
    }
    .brand-mark{
      display:flex;
      align-items:center;
      gap:10px;
      font-weight:850;
      font-size:18px;
      line-height:1.1;
    }
    .brand-icon{
      width:36px;
      height:36px;
      border-radius:14px;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      display:grid;
      place-items:center;
      color:#fff;
      box-shadow:0 10px 24px rgba(52,120,229,.24);
      font-size:16px;
      flex:0 0 auto;
    }
    .brand-sub{
      margin-top:4px;
      color:var(--weak);
      font-size:11px;
      letter-spacing:.02em;
    }
    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:10px 16px;
      border-radius:999px;
      background:var(--text);
      color:#fff;
      font-size:14px;
      font-weight:750;
      box-shadow:0 12px 24px rgba(23,32,51,.12);
    }
    .nav-cta:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
    .mobile-bar{display:none}
    .menu-toggle{
      width:44px;
      height:44px;
      border:1px solid var(--line);
      border-radius:14px;
      background:#fff;
      display:grid;
      place-items:center;
      color:var(--text);
    }
    .menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{
      display:block;
      width:18px;
      height:2px;
      background:currentColor;
      border-radius:2px;
      position:relative;
      transition:var(--ease);
    }
    .menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0}
    .menu-toggle span::before{top:-6px}
    .menu-toggle span::after{top:6px}
    .mobile-menu{
      display:none;
      border-top:1px solid var(--line);
      background:#fff;
      padding:12px 20px 18px;
    }
    .mobile-menu.is-open{display:block}
    .mobile-menu a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:13px 10px;
      border-radius:14px;
      font-weight:700;
      color:var(--text);
    }
    .mobile-menu a:hover,.mobile-menu a.active{background:var(--blue-soft);color:var(--primary)}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:50px;
      padding:14px 24px;
      border-radius:999px;
      font-size:15px;
      font-weight:800;
      border:1px solid transparent;
      transition:var(--ease);
      line-height:1;
      white-space:nowrap;
    }
    .btn-primary{
      background:var(--primary);
      color:#fff;
      box-shadow:0 14px 28px rgba(52,120,229,.22);
    }
    .btn-primary:hover,.btn-primary:focus{background:var(--primary-dark);color:#fff;transform:translateY(-3px);box-shadow:0 18px 36px rgba(52,120,229,.28)}
    .btn-secondary{
      background:#fff;
      color:var(--primary-dark);
      border-color:#CFE0F7;
    }
    .btn-secondary:hover{background:var(--blue-soft);border-color:#AFCDF5;transform:translateY(-2px)}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary-dark);
      font-weight:800;
    }
    .text-link .arrow{transition:var(--ease)}
    .text-link:hover .arrow{transform:translateX(4px)}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .badge{
      display:inline-flex;
      align-items:center;
      padding:7px 11px;
      border-radius:999px;
      font-size:12px;
      font-weight:800;
      color:#315066;
      background:#F1F6FE;
      border:1px solid #DDEBFB;
      line-height:1.2;
    }
    .badge.green{background:var(--secondary-soft);border-color:#CDEFEA;color:#147E7A}
    .badge.orange{background:var(--orange-soft);border-color:#FFE0B3;color:#A15D10}
    .hero{
      position:relative;
      min-height:720px;
      overflow:hidden;
      background:
        radial-gradient(circle at 10% 18%,rgba(32,167,160,.12),transparent 28%),
        radial-gradient(circle at 84% 20%,rgba(52,120,229,.14),transparent 26%),
        linear-gradient(180deg,#FBFDFF 0%,#F4F9FF 100%);
      padding:82px 0 46px;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      background-image:linear-gradient(rgba(52,120,229,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(52,120,229,.055) 1px,transparent 1px);
      background-size:44px 44px;
      mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 82%);
      pointer-events:none;
    }
    .hero-grid{position:relative;z-index:1;align-items:center}
    .hero-copy{padding-right:24px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 22px}
    .hero-note{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      color:#5C6A7D;
      font-size:14px;
    }
    .hero-note span{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.75);
      border:1px solid rgba(227,234,243,.9);
    }
    .hero-note span::before{content:"✓";color:var(--secondary);font-weight:900}
    .visual-panel{
      position:relative;
      padding:18px;
      border-radius:32px;
      background:rgba(255,255,255,.72);
      border:1px solid rgba(227,234,243,.9);
      box-shadow:var(--shadow);
    }
    .visual-photo{
      position:relative;
      min-height:390px;
      border-radius:26px;
      overflow:hidden;
      background-image:linear-gradient(135deg,rgba(23,32,51,.18),rgba(52,120,229,.1)),url('/assets/images/backpic/back-1.webp');
      background-size:cover;
      background-position:center;
    }
    .visual-photo::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(247,250,253,.68));
    }
    .dashboard-card{
      position:absolute;
      z-index:2;
      left:26px;
      right:26px;
      bottom:26px;
      padding:20px;
      border-radius:22px;
      background:rgba(255,255,255,.94);
      box-shadow:0 18px 38px rgba(23,32,51,.12);
      border:1px solid rgba(227,234,243,.95);
    }
    .dash-head{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:14px;
      margin-bottom:14px;
    }
    .dash-title{font-weight:850;color:var(--text)}
    .dash-state{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:#14837E;
      font-size:12px;
      font-weight:800;
      background:var(--secondary-soft);
      border-radius:999px;
      padding:5px 9px;
    }
    .dash-state::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--secondary)}
    .metric-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:10px;
    }
    .metric{
      padding:13px;
      border-radius:16px;
      background:#F8FBFF;
      border:1px solid var(--line);
    }
    .metric strong{display:block;color:var(--primary-dark);font-size:18px;line-height:1.1}
    .metric span{display:block;color:var(--weak);font-size:12px;margin-top:5px}
    .floating-route{
      position:absolute;
      z-index:3;
      top:34px;
      right:-10px;
      width:176px;
      padding:14px;
      border-radius:20px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .route-line{
      height:6px;
      border-radius:999px;
      background:linear-gradient(90deg,var(--primary),var(--secondary),var(--orange));
      margin:10px 0 8px;
    }
    .floating-route small{display:block;color:var(--weak);line-height:1.45}
    .section-head{
      max-width:760px;
      margin:0 auto 46px;
      text-align:center;
    }
    .section-head.left{text-align:left;margin-left:0}
    .service-layout{
      display:grid;
      grid-template-columns:1.05fr 1.45fr;
      gap:24px;
      align-items:stretch;
    }
    .card{
      background:var(--paper);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:0 10px 28px rgba(23,32,51,.055);
      transition:var(--ease);
    }
    .card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-hover);
      border-color:#C9DCF7;
    }
    .feature-main{
      position:relative;
      overflow:hidden;
      padding:26px;
      min-height:520px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .feature-main::before{
      content:"";
      position:absolute;
      inset:0 0 auto 0;
      height:178px;
      background:linear-gradient(135deg,rgba(52,120,229,.11),rgba(32,167,160,.1));
      pointer-events:none;
    }
    .feature-main > *{position:relative;z-index:1}
    .feature-img{
      margin:-4px -4px 22px;
      border-radius:22px;
      overflow:hidden;
      height:224px;
      border:1px solid var(--line);
    }
    .feature-img img{width:100%;height:100%;object-fit:cover}
    .check-list{
      list-style:none;
      padding:0;
      margin:20px 0 0;
      display:grid;
      gap:10px;
    }
    .check-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#405066;
      font-size:15px;
    }
    .check-list li::before{
      content:"";
      width:18px;
      height:18px;
      margin-top:4px;
      flex:0 0 auto;
      border-radius:50%;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 0 0 4px rgba(52,120,229,.1);
    }
    .service-small-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:20px;
    }
    .service-card{
      padding:24px;
      min-height:250px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .icon-block{
      width:48px;
      height:48px;
      border-radius:17px;
      display:grid;
      place-items:center;
      background:var(--blue-soft);
      color:var(--primary);
      font-weight:900;
      font-size:20px;
      margin-bottom:18px;
    }
    .service-card:nth-child(2) .icon-block,
    .service-card:nth-child(4) .icon-block{background:var(--secondary-soft);color:#158984}
    .stats-band{
      position:relative;
      overflow:hidden;
      border-radius:34px;
      background:linear-gradient(135deg,#F2F8FF 0%,#F7FFFC 100%);
      border:1px solid var(--line);
      padding:34px;
    }
    .stats-band::after{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      right:-80px;
      top:-100px;
      border-radius:50%;
      background:rgba(52,120,229,.11);
    }
    .stat-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .stat-card{
      padding:22px;
      border-radius:22px;
      background:rgba(255,255,255,.86);
      border:1px solid rgba(227,234,243,.9);
    }
    .stat-num{
      color:var(--primary-dark);
      font-size:34px;
      font-weight:900;
      line-height:1;
      margin-bottom:8px;
    }
    .stat-card span{font-size:13px;color:var(--weak);font-weight:700}
    .scenario-wrap{
      position:relative;
      display:grid;
      grid-template-columns:1fr 1fr 1fr;
      gap:24px;
      align-items:start;
    }
    .scenario-card{
      position:relative;
      padding:24px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:0 12px 30px rgba(23,32,51,.06);
    }
    .scenario-card:nth-child(2){margin-top:44px}
    .scenario-card:nth-child(3){margin-top:88px}
    .scenario-card::before{
      content:attr(data-step);
      display:inline-grid;
      place-items:center;
      width:42px;
      height:42px;
      border-radius:16px;
      background:var(--text);
      color:#fff;
      font-weight:900;
      margin-bottom:18px;
    }
    .scenario-meta{
      display:grid;
      gap:12px;
      margin-top:18px;
    }
    .scenario-meta div{
      padding:12px 14px;
      border-radius:16px;
      background:#F8FBFF;
      border:1px solid var(--line);
      color:#43536A;
      font-size:14px;
    }
    .path-section{
      background:
        radial-gradient(circle at 15% 20%,rgba(255,180,92,.13),transparent 24%),
        linear-gradient(180deg,#FFFFFF,#F7FAFD);
    }
    .steps{
      display:grid;
      grid-template-columns:repeat(5,1fr);
      gap:14px;
      position:relative;
    }
    .step-card{
      position:relative;
      padding:22px 18px;
      border-radius:22px;
      background:#fff;
      border:1px solid var(--line);
      min-height:190px;
      box-shadow:0 10px 24px rgba(23,32,51,.05);
    }
    .step-card::after{
      content:"";
      position:absolute;
      top:39px;
      right:-15px;
      width:16px;
      height:2px;
      background:#CFE0F7;
    }
    .step-card:last-child::after{display:none}
    .step-no{
      color:var(--secondary);
      font-weight:900;
      font-size:13px;
      margin-bottom:12px;
    }
    .image-story{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:30px;
      align-items:center;
    }
    .story-image{
      border-radius:30px;
      overflow:hidden;
      min-height:380px;
      position:relative;
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .story-image img{width:100%;height:100%;min-height:380px;object-fit:cover}
    .story-image::after{
      content:"kaiyun.com 信息路径";
      position:absolute;
      left:22px;
      bottom:22px;
      padding:10px 14px;
      border-radius:999px;
      color:#fff;
      font-weight:850;
      background:rgba(23,32,51,.72);
      backdrop-filter:blur(8px);
    }
    .story-list{
      display:grid;
      gap:16px;
      margin-top:24px;
    }
    .story-item{
      display:flex;
      gap:14px;
      padding:16px;
      border-radius:20px;
      border:1px solid var(--line);
      background:#fff;
    }
    .story-item b{
      flex:0 0 auto;
      width:34px;
      height:34px;
      display:grid;
      place-items:center;
      border-radius:13px;
      background:var(--blue-soft);
      color:var(--primary-dark);
    }
    .accordion{
      background:transparent;
    }
    .accordion-item{
      margin-bottom:12px;
      border:1px solid var(--line);
      border-radius:18px;
      overflow:hidden;
      background:#fff;
      box-shadow:0 8px 20px rgba(23,32,51,.045);
    }
    .accordion-title{
      border:0!important;
      padding:20px 54px 20px 22px;
      color:var(--text);
      font-size:17px;
      font-weight:800;
      line-height:1.45;
    }
    .accordion-title:hover,.accordion-title:focus{background:#F8FBFF;color:var(--primary-dark)}
    .accordion-title::before{right:22px;font-size:24px;color:var(--primary)}
    .accordion-content{
      border:0!important;
      padding:0 22px 22px;
      background:#fff;
      color:var(--muted);
    }
    .contact-card{
      position:relative;
      overflow:hidden;
      border-radius:34px;
      background:linear-gradient(135deg,#EFF7FF 0%,#F8FFFC 100%);
      border:1px solid var(--line);
      padding:38px;
      box-shadow:var(--shadow);
    }
    .contact-card::before{
      content:"";
      position:absolute;
      right:-70px;
      bottom:-90px;
      width:280px;
      height:280px;
      border-radius:50%;
      background:rgba(32,167,160,.12);
    }
    .contact-card > .grid-x{position:relative;z-index:1}
    .form-box{
      padding:24px;
      border-radius:26px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:0 14px 30px rgba(23,32,51,.06);
    }
    .form-box label{
      color:#344154;
      font-weight:800;
      font-size:14px;
      margin-bottom:7px;
    }
    .form-box input,.form-box textarea{
      width:100%;
      min-height:52px;
      border:1px solid var(--line);
      border-radius:16px;
      background:#FAFCFF;
      box-shadow:none;
      margin-bottom:14px;
      padding:12px 14px;
      color:var(--text);
      transition:var(--ease);
    }
    .form-box textarea{min-height:112px;resize:vertical}
    .form-box input:focus,.form-box textarea:focus{
      border-color:var(--primary);
      background:#fff;
      box-shadow:0 0 0 4px rgba(52,120,229,.12);
    }
    .tip-card{
      padding:20px;
      border-radius:24px;
      background:rgba(255,255,255,.72);
      border:1px solid rgba(227,234,243,.95);
      margin-top:20px;
    }
    .tip-card ul{margin:12px 0 0;padding-left:0;list-style:none;display:grid;gap:8px}
    .tip-card li{color:#42536A;font-size:14px}
    .tip-card li::before{content:"•";color:var(--secondary);font-weight:900;margin-right:8px}
    .site-footer{
      background:#111827;
      color:#D8E0EA;
      padding:58px 0 26px;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:900;
      color:#fff;
      font-size:19px;
      margin-bottom:14px;
    }
    .footer-brand .brand-icon{width:38px;height:38px}
    .site-footer p{color:#AEB8C7;font-size:15px}
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{color:#C9D3E1;font-weight:700}
    .footer-links a:hover{color:#8EC5FF}
    .footer-title{
      color:#fff;
      font-size:15px;
      font-weight:900;
      margin-bottom:14px;
    }
    .footer-bottom{
      margin-top:38px;
      padding-top:22px;
      border-top:1px solid rgba(255,255,255,.1);
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      color:#91A0B4;
      font-size:13px;
    }
    .footer-mini-cta{
      margin-bottom:36px;
      padding:22px;
      border-radius:26px;
      background:linear-gradient(135deg,rgba(52,120,229,.18),rgba(32,167,160,.14));
      border:1px solid rgba(255,255,255,.12);
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:18px;
    }
    .footer-mini-cta strong{display:block;color:#fff;font-size:20px}
    .footer-mini-cta span{color:#B7C3D3;font-size:14px}
    .footer-mini-cta .btn{background:#fff;color:var(--text);box-shadow:none}
    .footer-mini-cta .btn:hover{background:#EAF3FF;color:var(--primary-dark)}
    @media (max-width:1024px){
      .site-container{width:min(100% - 32px,960px)}
      .nav-shell{display:none}
      .mobile-bar{
        min-height:72px;
        display:flex;
        justify-content:space-between;
        align-items:center;
      }
      .mobile-bar .brand{align-items:flex-start;min-width:0}
      .mobile-bar .brand-mark{font-size:17px}
      .hero{padding:64px 0 40px;min-height:auto}
      .hero-copy{padding-right:0;margin-bottom:32px}
      .service-layout,.image-story{grid-template-columns:1fr}
      .feature-main{min-height:auto}
      .stat-grid{grid-template-columns:repeat(2,1fr)}
      .scenario-wrap{grid-template-columns:1fr}
      .scenario-card:nth-child(2),.scenario-card:nth-child(3){margin-top:0}
      .steps{grid-template-columns:1fr 1fr}
      .step-card::after{display:none}
      .floating-route{right:16px}
    }
    @media (max-width:768px){
      .section{padding:62px 0}
      .section-compact{padding:50px 0}
      .lead{font-size:16px}
      .hero-actions{flex-direction:column}
      .btn{width:100%}
      .visual-photo{min-height:330px}
      .dashboard-card{left:16px;right:16px;bottom:16px;padding:16px}
      .floating-route{display:none}
      .service-small-grid{grid-template-columns:1fr}
      .stat-grid{grid-template-columns:1fr}
      .steps{grid-template-columns:1fr}
      .contact-card{padding:24px}
      .footer-mini-cta{align-items:flex-start;flex-direction:column}
      .footer-bottom{flex-direction:column}
      .story-image,.story-image img{min-height:300px}
    }
    @media (max-width:520px){
      .site-container{width:min(100% - 24px,480px)}
      .top-strip .site-container{font-size:12px}
      .brand-sub{display:none}
      .hero-note{display:grid}
      .metric-grid{grid-template-columns:1fr}
      .dashboard-card{position:relative;left:auto;right:auto;bottom:auto;margin:16px}
      .visual-photo{display:flex;align-items:flex-end;min-height:260px}
      .visual-panel{padding:10px;border-radius:24px}
      .feature-img{height:180px}
      .section-head{margin-bottom:30px}
      .accordion-title{font-size:16px;padding-right:48px}
    }

/* roulang page: category1 */
:root{
      --primary:#3478E5;
      --primary-dark:#245FB8;
      --primary-soft:#EAF2FF;
      --secondary:#20A7A0;
      --secondary-soft:#E8F8F6;
      --ink:#172033;
      --text:#536174;
      --muted:#7A8798;
      --bg:#F7FAFD;
      --card:#FFFFFF;
      --line:#E3EAF3;
      --warm:#FFB45C;
      --warm-soft:#FFF3E2;
      --footer:#111827;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:28px;
      --shadow:0 18px 45px rgba(23,32,51,.08);
      --shadow-hover:0 24px 60px rgba(23,32,51,.13);
      --container:1200px;
      --ease:all .25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      color:var(--text);
      background:var(--bg);
      line-height:1.75;
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover,a:focus{color:var(--primary)}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(52,120,229,.16);color:var(--ink)}
    :focus-visible{outline:3px solid rgba(52,120,229,.28);outline-offset:3px;border-radius:10px}
    h1,h2,h3,h4,p{margin-top:0}
    h1,h2,h3,h4{color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.18}
    h1{font-size:clamp(34px,5vw,52px);margin-bottom:20px}
    h2{font-size:clamp(27px,3vw,38px);margin-bottom:16px}
    h3{font-size:21px;margin-bottom:12px}
    p{margin-bottom:16px}
    .site-container{
      width:min(calc(100% - 40px),var(--container));
      margin:0 auto;
    }
    .section{
      padding:88px 0;
      position:relative;
    }
    .section-tight{padding:64px 0}
    .section-head{
      max-width:760px;
      margin-bottom:34px;
    }
    .section-head.center{
      margin-left:auto;
      margin-right:auto;
      text-align:center;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary);
      background:var(--primary-soft);
      border:1px solid rgba(52,120,229,.16);
      border-radius:999px;
      padding:7px 12px;
      font-size:13px;
      font-weight:700;
      margin-bottom:16px;
    }
    .eyebrow::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:999px;
      background:var(--secondary);
      box-shadow:0 0 0 5px rgba(32,167,160,.12);
    }
    .muted{color:var(--muted)}
    .topbar{
      background:linear-gradient(90deg,#F4FAFF,#FFFFFF,#F2FBF9);
      border-bottom:1px solid var(--line);
      color:#526176;
      font-size:13px;
    }
    .topbar .site-container{
      min-height:34px;
      display:flex;
      align-items:center;
      justify-content:center;
      text-align:center;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.92);
      backdrop-filter:saturate(160%) blur(14px);
      border-bottom:1px solid rgba(227,234,243,.88);
    }
    .nav-wrap{
      width:min(calc(100% - 40px),var(--container));
      margin:0 auto;
      min-height:78px;
      display:flex;
      align-items:center;
      justify-content:center;
      position:relative;
    }
    .nav-shell{
      width:100%;
      display:grid;
      grid-template-columns:1fr auto 1fr;
      align-items:center;
      gap:20px;
    }
    .nav-left,.nav-right{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .nav-left{justify-content:flex-start}
    .nav-right{justify-content:flex-end}
    .nav-link{
      display:inline-flex;
      align-items:center;
      min-height:40px;
      padding:0 13px;
      border-radius:999px;
      color:var(--ink);
      font-size:15px;
      font-weight:600;
      position:relative;
      white-space:nowrap;
    }
    .nav-link:hover{
      background:var(--primary-soft);
      color:var(--primary);
    }
    .nav-link.active{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .brand{
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      color:var(--ink);
      min-width:260px;
      padding:6px 12px;
      border-radius:18px;
    }
    .brand:hover{background:#F5F9FF;color:var(--ink)}
    .brand-mark,.footer-brand{
      display:flex;
      align-items:center;
      gap:10px;
      font-weight:800;
      color:var(--ink);
    }
    .brand-icon{
      width:34px;
      height:34px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:12px;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      color:#fff;
      font-weight:900;
      box-shadow:0 10px 22px rgba(52,120,229,.22);
    }
    .brand-sub{
      margin-top:2px;
      color:var(--muted);
      font-size:12px;
      line-height:1.2;
    }
    .nav-cta,.btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:0 20px;
      border-radius:999px;
      background:var(--primary);
      color:#fff;
      font-weight:700;
      border:1px solid transparent;
      box-shadow:0 12px 28px rgba(52,120,229,.22);
      transition:var(--ease);
      white-space:nowrap;
    }
    .nav-cta:hover,.btn:hover,.nav-cta:focus,.btn:focus{
      background:var(--primary-dark);
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 16px 36px rgba(52,120,229,.3);
    }
    .btn.secondary{
      background:#fff;
      color:var(--primary);
      border-color:#CFE0FA;
      box-shadow:none;
    }
    .btn.secondary:hover{
      background:var(--primary-soft);
      color:var(--primary-dark);
      border-color:#B7D0F7;
      box-shadow:0 12px 28px rgba(52,120,229,.12);
    }
    .mobile-header{display:none}
    .menu-toggle{
      width:44px;height:44px;border:1px solid var(--line);
      background:#fff;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
      color:var(--ink);
    }
    .menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{
      display:block;width:20px;height:2px;background:currentColor;border-radius:2px;content:"";position:relative;transition:var(--ease)
    }
    .menu-toggle span::before{position:absolute;top:-7px}
    .menu-toggle span::after{position:absolute;top:7px}
    .mobile-panel{
      display:none;
      border-top:1px solid var(--line);
      background:#fff;
      padding:12px 20px 20px;
    }
    .mobile-panel.is-open{display:block}
    .mobile-panel a{
      display:flex;
      align-items:center;
      min-height:46px;
      padding:0 14px;
      border-radius:14px;
      font-weight:700;
      color:var(--ink);
    }
    .mobile-panel a.active,.mobile-panel a:hover{background:var(--primary-soft);color:var(--primary)}
    .inner-hero{
      padding:70px 0 62px;
      background:
        radial-gradient(circle at 12% 20%,rgba(32,167,160,.14),transparent 28%),
        radial-gradient(circle at 86% 18%,rgba(52,120,229,.16),transparent 30%),
        linear-gradient(135deg,#F8FBFF 0%,#EFF6FF 52%,#F7FFFD 100%);
      position:relative;
      overflow:hidden;
      border-bottom:1px solid var(--line);
    }
    .inner-hero::after{
      content:"";
      position:absolute;
      inset:auto -80px -150px auto;
      width:430px;height:430px;
      border:1px solid rgba(52,120,229,.13);
      border-radius:50%;
      background:repeating-linear-gradient(45deg,rgba(52,120,229,.045) 0 2px,transparent 2px 12px);
    }
    .breadcrumb{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:8px;
      font-size:14px;
      color:var(--muted);
      margin-bottom:22px;
    }
    .breadcrumb a{font-weight:700;color:var(--primary)}
    .breadcrumb span:last-child{color:var(--ink);font-weight:700}
    .hero-copy{
      position:relative;
      z-index:2;
      max-width:750px;
    }
    .hero-copy p{
      font-size:18px;
      color:#536174;
      max-width:720px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:26px;
    }
    .hero-map-card{
      position:relative;
      z-index:2;
      border:1px solid rgba(227,234,243,.95);
      background:rgba(255,255,255,.82);
      box-shadow:var(--shadow);
      border-radius:var(--radius-lg);
      padding:18px;
      overflow:hidden;
    }
    .hero-map-card img{
      width:100%;
      min-height:310px;
      object-fit:cover;
      border-radius:22px;
      filter:saturate(1.02) contrast(.98);
    }
    .hero-map-overlay{
      position:absolute;
      left:34px;
      right:34px;
      bottom:34px;
      background:rgba(255,255,255,.92);
      border:1px solid rgba(227,234,243,.9);
      border-radius:20px;
      padding:16px;
      box-shadow:0 16px 38px rgba(23,32,51,.12);
    }
    .route-line{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      margin-top:14px;
    }
    .route-node{
      width:12px;height:12px;border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 7px rgba(52,120,229,.12);
      flex:0 0 auto;
    }
    .route-dash{
      height:2px;
      flex:1;
      background:linear-gradient(90deg,var(--primary),var(--secondary));
      opacity:.55;
    }
    .badge-list{display:flex;flex-wrap:wrap;gap:9px;margin:14px 0 0}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:5px;
      border-radius:999px;
      padding:6px 10px;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-size:12px;
      font-weight:700;
      border:1px solid rgba(52,120,229,.13);
    }
    .badge.green{background:var(--secondary-soft);color:#087B75;border-color:rgba(32,167,160,.16)}
    .badge.orange{background:var(--warm-soft);color:#9A5A00;border-color:rgba(255,180,92,.22)}
    .layout-section{
      background:#fff;
    }
    .sticky-aside{
      position:sticky;
      top:112px;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      padding:22px;
      background:linear-gradient(180deg,#fff,#F9FCFF);
      box-shadow:var(--shadow);
    }
    .aside-title{
      color:var(--ink);
      font-weight:800;
      margin-bottom:12px;
      display:flex;
      align-items:center;
      gap:9px;
    }
    .aside-title::before{
      content:"";
      width:10px;height:10px;border-radius:50%;
      background:var(--secondary);
      box-shadow:0 0 0 6px rgba(32,167,160,.12);
    }
    .aside-nav{
      display:flex;
      flex-direction:column;
      gap:8px;
      margin:16px 0 22px;
    }
    .aside-nav a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:12px 14px;
      border-radius:15px;
      color:var(--ink);
      background:#fff;
      border:1px solid var(--line);
      font-weight:700;
    }
    .aside-nav a:hover{
      border-color:#BCD5FB;
      background:var(--primary-soft);
      transform:translateX(3px);
    }
    .aside-card{
      background:var(--ink);
      color:#DCE6F3;
      border-radius:22px;
      padding:20px;
      margin-top:20px;
      position:relative;
      overflow:hidden;
    }
    .aside-card::after{
      content:"";
      position:absolute;
      width:120px;height:120px;border-radius:50%;
      right:-52px;top:-42px;
      background:rgba(32,167,160,.22);
    }
    .aside-card strong{display:block;color:#fff;font-size:18px;margin-bottom:8px}
    .aside-card p{font-size:14px;margin-bottom:16px;color:#DCE6F3}
    .topic-stack{display:flex;flex-direction:column;gap:18px}
    .topic-card{
      display:grid;
      grid-template-columns:112px 1fr auto;
      gap:22px;
      align-items:center;
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      padding:18px;
      box-shadow:0 12px 34px rgba(23,32,51,.055);
      transition:var(--ease);
      position:relative;
      overflow:hidden;
    }
    .topic-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-hover);
      border-color:#C7DAF7;
    }
    .topic-media{
      width:112px;height:104px;border-radius:22px;
      overflow:hidden;
      background:var(--primary-soft);
      position:relative;
    }
    .topic-media img{
      width:100%;height:100%;object-fit:cover;
    }
    .topic-index{
      position:absolute;
      left:10px;top:10px;
      width:34px;height:34px;
      display:flex;align-items:center;justify-content:center;
      border-radius:13px;
      background:rgba(255,255,255,.9);
      color:var(--primary);
      font-weight:900;
      box-shadow:0 8px 18px rgba(23,32,51,.1);
    }
    .topic-content h3{margin-bottom:8px}
    .topic-content p{margin-bottom:12px;color:var(--text)}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:var(--primary);
      font-weight:800;
      white-space:nowrap;
    }
    .text-link::after{
      content:"→";
      transition:var(--ease);
    }
    .text-link:hover::after{transform:translateX(4px)}
    .choice-section{
      background:
        linear-gradient(180deg,#F7FAFD 0%,#FFFFFF 100%);
    }
    .choice-card{
      height:100%;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:#fff;
      padding:26px;
      box-shadow:var(--shadow);
      transition:var(--ease);
      position:relative;
      overflow:hidden;
    }
    .choice-card::before{
      content:"";
      position:absolute;
      left:0;top:0;right:0;
      height:5px;
      background:linear-gradient(90deg,var(--primary),var(--secondary));
      opacity:.82;
    }
    .choice-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-hover);
      border-color:#C4D9F8;
    }
    .choice-label{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:42px;height:42px;
      border-radius:15px;
      background:var(--primary-soft);
      color:var(--primary);
      font-weight:900;
      margin-bottom:18px;
    }
    .feature-list{
      list-style:none;
      padding:0;
      margin:18px 0 0;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .feature-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#465466;
    }
    .feature-list li::before{
      content:"";
      width:8px;height:8px;
      margin-top:10px;
      border-radius:999px;
      background:var(--secondary);
      flex:0 0 auto;
    }
    .process-band{
      background:#172033;
      color:#D8E3F0;
      overflow:hidden;
    }
    .process-band h2,.process-band h3{color:#fff}
    .process-band .section-head p{color:#C7D3E2}
    .route-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
      position:relative;
    }
    .route-step{
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.12);
      border-radius:24px;
      padding:22px;
      min-height:190px;
      transition:var(--ease);
    }
    .route-step:hover{
      background:rgba(255,255,255,.09);
      transform:translateY(-4px);
    }
    .route-num{
      color:#9BE4DF;
      font-weight:900;
      font-size:14px;
      margin-bottom:14px;
    }
    .route-step p{color:#D8E3F0;margin-bottom:0;font-size:15px}
    .faq-section{background:#fff}
    .accordion{
      background:transparent;
      border:0;
    }
    .accordion-item{
      border:1px solid var(--line);
      border-radius:20px;
      overflow:hidden;
      margin-bottom:12px;
      background:#fff;
      box-shadow:0 10px 28px rgba(23,32,51,.045);
    }
    .accordion-title{
      border:0!important;
      color:var(--ink)!important;
      font-size:17px;
      font-weight:800;
      padding:19px 48px 19px 22px;
      background:#fff;
      line-height:1.5;
    }
    .accordion-title:hover,.accordion-title:focus{
      background:var(--primary-soft);
      color:var(--primary)!important;
    }
    .accordion-title::before{
      color:var(--primary);
      font-size:22px;
      right:22px;
      margin-top:-13px;
    }
    .accordion-content{
      border:0!important;
      border-top:1px solid var(--line)!important;
      color:var(--text);
      padding:20px 22px;
      background:#FBFDFF;
    }
    .cta-panel{
      border-radius:32px;
      padding:38px;
      background:
        radial-gradient(circle at 12% 20%,rgba(32,167,160,.16),transparent 30%),
        linear-gradient(135deg,#EDF5FF,#FFFFFF 58%,#F0FBF8);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:26px;
    }
    .cta-panel h2{margin-bottom:10px}
    .cta-panel p{margin-bottom:0;max-width:680px}
    .site-footer{
      background:var(--footer);
      color:#C8D2E1;
      padding:54px 0 26px;
    }
    .footer-mini-cta{
      margin-top:-96px;
      margin-bottom:50px;
      background:#fff;
      color:var(--text);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      border-radius:26px;
      padding:24px;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:20px;
    }
    .footer-mini-cta strong{
      display:block;
      color:var(--ink);
      font-size:20px;
      margin-bottom:4px;
    }
    .site-footer .footer-brand{
      color:#fff;
      margin-bottom:18px;
      font-size:19px;
    }
    .site-footer p{color:#C8D2E1}
    .footer-title{
      color:#fff;
      font-weight:800;
      margin-bottom:14px;
    }
    .footer-links{
      display:flex;
      flex-direction:column;
      gap:9px;
    }
    .footer-links a{
      color:#C8D2E1;
    }
    .footer-links a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{
      border-top:1px solid rgba(255,255,255,.12);
      margin-top:34px;
      padding-top:20px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:#98A6BA;
      font-size:13px;
    }
    @media (max-width:1024px){
      .nav-shell{display:none}
      .mobile-header{
        min-height:72px;
        display:flex;
        align-items:center;
        justify-content:space-between;
        width:100%;
      }
      .mobile-header .brand{align-items:flex-start;min-width:0;padding-left:0}
      .section{padding:70px 0}
      .topic-card{grid-template-columns:96px 1fr;align-items:start}
      .topic-card .text-link{grid-column:2}
      .topic-media{width:96px;height:96px}
      .route-grid{grid-template-columns:repeat(2,1fr)}
      .sticky-aside{position:relative;top:auto;margin-bottom:26px}
    }
    @media (max-width:768px){
      .site-container,.nav-wrap{width:min(calc(100% - 28px),var(--container))}
      .inner-hero{padding:46px 0 50px}
      .hero-map-card{margin-top:28px}
      .hero-map-card img{min-height:240px}
      .hero-map-overlay{left:26px;right:26px;bottom:26px}
      .topic-card{
        grid-template-columns:1fr;
        gap:14px;
        padding:16px;
      }
      .topic-card .text-link{grid-column:auto}
      .topic-media{width:100%;height:170px}
      .route-grid{grid-template-columns:1fr}
      .cta-panel{
        padding:28px;
        flex-direction:column;
        align-items:flex-start;
      }
      .footer-mini-cta{
        flex-direction:column;
        align-items:flex-start;
        margin-top:-82px;
      }
      .footer-bottom{flex-direction:column}
    }
    @media (max-width:520px){
      h1{font-size:32px}
      .brand-mark{font-size:15px}
      .brand-icon{width:32px;height:32px;border-radius:11px}
      .hero-actions,.cta-panel .btn,.footer-mini-cta .btn{width:100%}
      .hero-actions .btn,.cta-panel .btn,.footer-mini-cta .btn{justify-content:center}
      .section{padding:58px 0}
      .section-tight{padding:50px 0}
      .badge-list{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}
      .badge{white-space:nowrap}
    }