/* roulang page: index */
:root{
      --color-primary:#2563EB;
      --color-primary-dark:#1D4ED8;
      --color-primary-soft:#DBEAFE;
      --color-cyan:#06B6D4;
      --color-cyan-dark:#0891B2;
      --color-amber:#F59E0B;
      --color-bg:#F8FBFF;
      --color-bg-soft:#EEF6FF;
      --color-card:#FFFFFF;
      --color-title:#0F172A;
      --color-text:#334155;
      --color-muted:#64748B;
      --color-border:#E2E8F0;
      --color-line:#E5EAF2;
      --color-footer:#0F172A;
      --shadow-card:0 14px 35px rgba(15,23,42,.06);
      --shadow-hover:0 20px 45px rgba(37,99,235,.12);
      --radius-xl:24px;
      --radius-lg:20px;
      --radius-md:16px;
      --radius-sm:12px;
      --container:1200px;
      --header-height:72px;
      --font-main:-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-main);
      color:var(--color-text);
      background:var(--color-bg);
      line-height:1.8;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
    }
    a:hover{color:var(--color-primary)}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea{font-family:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(37,99,235,.18);color:var(--color-title)}
    :focus-visible{outline:3px solid rgba(37,99,235,.28);outline-offset:3px;border-radius:10px}

    .site-container{
      width:min(100% - 48px,var(--container));
      margin-inline:auto;
    }
    .section{
      padding:92px 0;
      position:relative;
    }
    .section-compact{padding:72px 0}
    .section-head{
      max-width:760px;
      margin-bottom:36px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(37,99,235,.08);
      color:var(--color-primary-dark);
      font-size:14px;
      font-weight:700;
      margin-bottom:14px;
    }
    .section-kicker::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:linear-gradient(135deg,var(--color-primary),var(--color-cyan));
    }
    h1,h2,h3,h4,p{margin-top:0}
    h1,h2,h3,h4{color:var(--color-title);line-height:1.22}
    h1{font-size:clamp(32px,5vw,52px);font-weight:800;letter-spacing:-.04em}
    h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:-.03em}
    h3{font-size:22px;font-weight:750}
    p{margin-bottom:0}
    .lead{
      font-size:18px;
      line-height:1.85;
      color:var(--color-muted);
    }
    .muted{color:var(--color-muted)}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:var(--color-primary);
      font-weight:700;
    }
    .text-link:hover{
      color:var(--color-primary-dark);
      text-decoration:underline;
      text-underline-offset:4px;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      height:var(--header-height);
      background:rgba(255,255,255,.92);
      backdrop-filter:saturate(160%) blur(14px);
      border-bottom:1px solid rgba(226,232,240,.82);
      box-shadow:0 8px 24px rgba(15,23,42,.04);
    }
    .site-header .top-bar{
      height:var(--header-height);
      padding:0;
      background:transparent;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:var(--color-title);
      font-weight:800;
      letter-spacing:-.02em;
      min-width:0;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      background:linear-gradient(145deg,var(--color-primary),var(--color-cyan));
      display:grid;
      place-items:center;
      color:#fff;
      font-weight:900;
      font-size:22px;
      box-shadow:0 12px 22px rgba(37,99,235,.22);
      position:relative;
      overflow:hidden;
      flex:0 0 auto;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      width:18px;
      height:18px;
      border:2px solid rgba(255,255,255,.6);
      border-radius:50%;
      right:-4px;
      bottom:-4px;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
    }
    .brand-name{
      font-size:16px;
      white-space:nowrap;
    }
    .brand-sub{
      font-size:12px;
      color:var(--color-muted);
      font-weight:600;
      margin-top:3px;
    }
    .nav-wrap{
      display:flex;
      align-items:center;
      justify-content:flex-end;
      gap:18px;
    }
    .main-menu{
      display:flex;
      align-items:center;
      gap:8px;
      list-style:none;
      margin:0;
      padding:0;
    }
    .main-menu a{
      display:inline-flex;
      align-items:center;
      min-height:42px;
      padding:0 16px;
      border-radius:999px;
      font-size:15px;
      font-weight:700;
      color:var(--color-text);
    }
    .main-menu a:hover,
    .main-menu a.active{
      background:rgba(37,99,235,.09);
      color:var(--color-primary-dark);
    }
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border:1px solid var(--color-border);
      border-radius:14px;
      background:#fff;
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      box-shadow:0 8px 18px rgba(15,23,42,.05);
    }
    .menu-toggle span{
      width:20px;
      height:2px;
      border-radius:99px;
      background:var(--color-title);
      transition:transform .2s ease,opacity .2s ease;
    }
    .menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .menu-toggle.is-open span:nth-child(2){opacity:0}
    .menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:46px;
      padding:0 22px;
      border-radius:999px;
      border:1px solid transparent;
      font-size:15px;
      font-weight:800;
      line-height:1;
      transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
      white-space:nowrap;
    }
    .btn-primary{
      background:var(--color-primary);
      color:#fff;
      box-shadow:0 12px 24px rgba(37,99,235,.22);
    }
    .btn-primary:hover{
      background:var(--color-primary-dark);
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 18px 30px rgba(37,99,235,.28);
    }
    .btn-outline{
      background:#fff;
      color:var(--color-primary-dark);
      border-color:rgba(37,99,235,.22);
      box-shadow:0 10px 24px rgba(15,23,42,.05);
    }
    .btn-outline:hover{
      border-color:rgba(37,99,235,.42);
      background:rgba(37,99,235,.06);
      color:var(--color-primary-dark);
      transform:translateY(-2px);
    }
    .btn:active{transform:translateY(0) scale(.99)}
    .btn-block{width:100%}

    .hero{
      min-height:690px;
      display:flex;
      align-items:center;
      padding:84px 0 76px;
      background:
        radial-gradient(circle at 82% 20%,rgba(6,182,212,.16),transparent 30%),
        radial-gradient(circle at 8% 10%,rgba(37,99,235,.12),transparent 35%),
        linear-gradient(180deg,#F8FBFF 0%,#EEF6FF 100%);
      position:relative;
      overflow:hidden;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      background-image:radial-gradient(rgba(37,99,235,.16) 1px,transparent 1px);
      background-size:24px 24px;
      opacity:.35;
      mask-image:linear-gradient(90deg,transparent 0%,#000 20%,#000 80%,transparent 100%);
    }
    .hero .site-container{position:relative;z-index:1}
    .hero-grid{
      align-items:center;
      gap:42px;
    }
    .hero-badge{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 14px;
      border:1px solid rgba(37,99,235,.18);
      border-radius:999px;
      background:rgba(255,255,255,.82);
      color:var(--color-primary-dark);
      font-size:14px;
      font-weight:800;
      box-shadow:0 10px 24px rgba(15,23,42,.04);
      margin-bottom:20px;
    }
    .hero-badge strong{
      display:inline-grid;
      place-items:center;
      width:24px;
      height:24px;
      border-radius:50%;
      color:#fff;
      background:linear-gradient(135deg,var(--color-primary),var(--color-cyan));
    }
    .hero h1{margin-bottom:22px}
    .hero-desc{
      max-width:680px;
      margin-bottom:28px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-bottom:34px;
    }
    .trust-row{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:14px;
      max-width:720px;
    }
    .trust-item{
      padding:15px 16px;
      background:rgba(255,255,255,.72);
      border:1px solid rgba(226,232,240,.82);
      border-radius:18px;
      box-shadow:0 10px 28px rgba(15,23,42,.04);
    }
    .trust-value{
      display:block;
      color:var(--color-title);
      font-size:18px;
      font-weight:850;
      line-height:1.35;
    }
    .trust-label{
      display:block;
      color:var(--color-muted);
      font-size:13px;
      margin-top:4px;
      line-height:1.45;
    }
    .service-panel{
      background:rgba(255,255,255,.9);
      border:1px solid rgba(226,232,240,.92);
      border-radius:28px;
      padding:26px;
      box-shadow:0 24px 60px rgba(37,99,235,.12);
      position:relative;
      overflow:hidden;
    }
    .service-panel::before{
      content:"";
      position:absolute;
      width:180px;
      height:180px;
      right:-74px;
      top:-70px;
      border-radius:50%;
      background:rgba(6,182,212,.12);
    }
    .panel-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      margin-bottom:22px;
      position:relative;
      z-index:1;
    }
    .panel-title{
      color:var(--color-title);
      font-size:19px;
      font-weight:850;
      line-height:1.35;
    }
    .status-pill{
      padding:7px 11px;
      border-radius:999px;
      background:rgba(16,185,129,.1);
      color:#047857;
      font-size:13px;
      font-weight:800;
      white-space:nowrap;
    }
    .panel-list{
      display:grid;
      gap:14px;
      position:relative;
      z-index:1;
    }
    .panel-item{
      display:flex;
      gap:14px;
      align-items:flex-start;
      padding:16px;
      border:1px solid rgba(226,232,240,.9);
      border-radius:18px;
      background:#fff;
      box-shadow:0 8px 22px rgba(15,23,42,.04);
    }
    .panel-icon{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      background:rgba(37,99,235,.09);
      color:var(--color-primary);
      font-weight:900;
    }
    .panel-item:nth-child(2) .panel-icon{background:rgba(6,182,212,.1);color:var(--color-cyan-dark)}
    .panel-item:nth-child(3) .panel-icon{background:rgba(245,158,11,.12);color:#B45309}
    .panel-item h3{
      font-size:16px;
      margin-bottom:3px;
    }
    .panel-item p{
      font-size:14px;
      color:var(--color-muted);
      line-height:1.65;
    }
    .panel-progress{
      margin-top:18px;
      padding:18px;
      border-radius:20px;
      background:linear-gradient(135deg,#EFF6FF,#F8FBFF);
      border:1px solid rgba(191,219,254,.9);
      position:relative;
      z-index:1;
    }
    .progress-head{
      display:flex;
      justify-content:space-between;
      color:var(--color-title);
      font-size:14px;
      font-weight:800;
      margin-bottom:10px;
    }
    .progress-track{
      height:9px;
      border-radius:999px;
      background:#DBEAFE;
      overflow:hidden;
    }
    .progress-bar{
      width:78%;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--color-primary),var(--color-cyan));
    }

    .card{
      background:var(--color-card);
      border:1px solid rgba(226,232,240,.92);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow-card);
      transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
    }
    .card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(37,99,235,.28);
    }
    .service-layout{
      display:grid;
      grid-template-columns:1.05fr 1.4fr;
      gap:24px;
      align-items:stretch;
    }
    .service-main{
      padding:34px;
      min-height:100%;
      background:
        radial-gradient(circle at 88% 12%,rgba(37,99,235,.1),transparent 34%),
        #fff;
    }
    .service-main .icon-large{
      width:58px;
      height:58px;
      border-radius:20px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--color-primary),var(--color-cyan));
      font-weight:900;
      font-size:24px;
      margin-bottom:22px;
      box-shadow:0 16px 30px rgba(37,99,235,.2);
    }
    .service-main h3{font-size:26px;margin-bottom:14px}
    .service-main p{color:var(--color-muted);margin-bottom:22px}
    .tag-list{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 11px;
      border-radius:999px;
      background:rgba(37,99,235,.08);
      color:var(--color-primary-dark);
      font-size:13px;
      font-weight:800;
    }
    .service-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:18px;
    }
    .service-card{
      padding:24px;
    }
    .mini-icon{
      width:44px;
      height:44px;
      border-radius:16px;
      display:grid;
      place-items:center;
      margin-bottom:16px;
      background:rgba(37,99,235,.08);
      color:var(--color-primary);
      font-weight:900;
    }
    .service-card:nth-child(even) .mini-icon{
      background:rgba(6,182,212,.1);
      color:var(--color-cyan-dark);
    }
    .service-card h3{
      font-size:19px;
      margin-bottom:8px;
    }
    .service-card p{
      color:var(--color-muted);
      font-size:15px;
      line-height:1.75;
      margin-bottom:14px;
    }

    .stats-section{
      background:linear-gradient(180deg,#EEF6FF 0%,#F8FBFF 100%);
      border-top:1px solid rgba(226,232,240,.78);
      border-bottom:1px solid rgba(226,232,240,.78);
    }
    .stats-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:1px;
      overflow:hidden;
      border-radius:24px;
      border:1px solid rgba(226,232,240,.92);
      background:var(--color-border);
      box-shadow:var(--shadow-card);
    }
    .stat-card{
      background:#fff;
      padding:30px 24px;
    }
    .stat-number{
      display:block;
      color:var(--color-primary);
      font-size:40px;
      font-weight:900;
      letter-spacing:-.04em;
      line-height:1.1;
      margin-bottom:8px;
    }
    .stat-card h3{
      font-size:18px;
      margin-bottom:7px;
    }
    .stat-card p{
      color:var(--color-muted);
      font-size:14px;
      line-height:1.65;
    }

    .scenario-grid{
      align-items:start;
      gap:36px;
    }
    .scenario-intro{
      position:sticky;
      top:100px;
    }
    .scenario-list{
      display:grid;
      gap:18px;
    }
    .scenario-card{
      padding:24px;
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:18px;
      align-items:start;
    }
    .scenario-num{
      width:46px;
      height:46px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:rgba(37,99,235,.08);
      color:var(--color-primary);
      font-weight:900;
    }
    .scenario-card h3{
      font-size:20px;
      margin-bottom:6px;
    }
    .scenario-card p{
      color:var(--color-muted);
      font-size:15px;
      line-height:1.75;
    }
    .scenario-fit{
      display:inline-flex;
      margin-top:12px;
      color:var(--color-cyan-dark);
      background:rgba(6,182,212,.08);
      padding:5px 10px;
      border-radius:999px;
      font-size:13px;
      font-weight:800;
    }

    .process-wrap{
      position:relative;
    }
    .process-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:20px;
      position:relative;
    }
    .process-grid::before{
      content:"";
      position:absolute;
      left:10%;
      right:10%;
      top:38px;
      border-top:2px dashed rgba(37,99,235,.22);
      z-index:0;
    }
    .process-card{
      position:relative;
      z-index:1;
      padding:24px;
      background:#fff;
      border:1px solid rgba(226,232,240,.92);
      border-radius:22px;
      box-shadow:var(--shadow-card);
      transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    }
    .process-card:nth-child(even){margin-top:28px}
    .process-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(37,99,235,.28);
    }
    .process-step{
      width:48px;
      height:48px;
      border-radius:18px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg,var(--color-primary),var(--color-cyan));
      color:#fff;
      font-weight:900;
      margin-bottom:18px;
      box-shadow:0 12px 24px rgba(37,99,235,.18);
    }
    .process-card h3{font-size:19px;margin-bottom:8px}
    .process-card p{color:var(--color-muted);font-size:15px;line-height:1.75}

    .news-section{
      background:#fff;
      border-top:1px solid rgba(226,232,240,.72);
      border-bottom:1px solid rgba(226,232,240,.72);
    }
    .news-head-row{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:22px;
      margin-bottom:34px;
    }
    .news-head-row .section-head{margin-bottom:0}
    .news-layout{
      display:grid;
      grid-template-columns:1.05fr 1.25fr;
      gap:22px;
    }
    .news-main-card{
      padding:30px;
      min-height:360px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      background:
        radial-gradient(circle at 90% 8%,rgba(37,99,235,.1),transparent 34%),
        #fff;
    }
    .news-meta{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:16px;
      color:var(--color-muted);
      font-size:13px;
      font-weight:700;
    }
    .news-badge{
      display:inline-flex;
      padding:5px 10px;
      border-radius:999px;
      background:rgba(37,99,235,.08);
      color:var(--color-primary-dark);
      font-size:13px;
      font-weight:800;
    }
    .news-main-card h3{
      font-size:26px;
      line-height:1.35;
      margin-bottom:12px;
    }
    .news-main-card h3 a:hover,
    .news-list-card h3 a:hover{color:var(--color-primary)}
    .news-summary{
      color:var(--color-muted);
      line-height:1.85;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .news-list{
      display:grid;
      gap:16px;
    }
    .news-list-card{
      padding:20px;
      display:grid;
      grid-template-columns:1fr auto;
      gap:18px;
      align-items:center;
    }
    .news-list-card h3{
      font-size:19px;
      margin-bottom:7px;
      line-height:1.42;
    }
    .news-list-card p{
      color:var(--color-muted);
      font-size:14px;
      line-height:1.65;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
      margin-bottom:12px;
    }
    .read-more{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      background:rgba(37,99,235,.08);
      color:var(--color-primary);
      font-weight:900;
    }
    .news-list-card:hover .read-more{
      background:var(--color-primary);
      color:#fff;
      transform:translateX(2px);
    }
    .empty-state{
      padding:44px 28px;
      text-align:center;
      border:1px dashed rgba(37,99,235,.28);
      border-radius:24px;
      background:linear-gradient(135deg,#F8FBFF,#EEF6FF);
    }
    .empty-icon{
      width:58px;
      height:58px;
      border-radius:22px;
      display:grid;
      place-items:center;
      margin:0 auto 16px;
      background:rgba(245,158,11,.12);
      color:#B45309;
      font-size:26px;
      font-weight:900;
    }
    .empty-state h3{font-size:22px;margin-bottom:8px}
    .empty-state p{color:var(--color-muted)}

    .faq-grid{
      align-items:start;
      gap:36px;
    }
    .faq-note{
      padding:24px;
      background:linear-gradient(135deg,#EFF6FF,#FFFFFF);
      border:1px solid rgba(191,219,254,.88);
      border-radius:22px;
      box-shadow:var(--shadow-card);
      margin-top:24px;
    }
    .faq-note h3{font-size:20px;margin-bottom:8px}
    .faq-note p{color:var(--color-muted);font-size:15px}
    .accordion{
      background:transparent;
      margin:0;
    }
    .accordion-item{
      margin-bottom:14px;
      border:1px solid rgba(226,232,240,.92);
      border-radius:18px;
      background:#fff;
      box-shadow:0 10px 28px rgba(15,23,42,.04);
      overflow:hidden;
      transition:border-color .2s ease,box-shadow .2s ease;
    }
    .accordion-item:hover{
      border-color:rgba(37,99,235,.28);
      box-shadow:var(--shadow-hover);
    }
    .accordion-title{
      border:0!important;
      color:var(--color-title);
      font-size:16px;
      font-weight:800;
      padding:20px 54px 20px 22px;
      background:#fff;
      line-height:1.5;
    }
    .accordion-title:hover,
    .accordion-title:focus{
      background:#F8FBFF;
      color:var(--color-primary-dark);
    }
    .accordion-title::before{
      right:22px;
      margin-top:-10px;
      color:var(--color-primary);
      font-size:22px;
      font-weight:700;
    }
    .is-active>.accordion-title{color:var(--color-primary-dark)}
    .accordion-content{
      border:0!important;
      padding:0 22px 22px;
      color:var(--color-muted);
      line-height:1.85;
      background:#fff;
    }

    .cta-section{
      padding:88px 0 96px;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:30px;
      padding:38px;
      background:
        radial-gradient(circle at 80% 18%,rgba(6,182,212,.18),transparent 35%),
        linear-gradient(135deg,#EEF6FF,#FFFFFF);
      border:1px solid rgba(191,219,254,.9);
      box-shadow:0 24px 60px rgba(37,99,235,.1);
    }
    .cta-box::before{
      content:"";
      position:absolute;
      inset:0;
      background-image:linear-gradient(rgba(37,99,235,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.07) 1px,transparent 1px);
      background-size:38px 38px;
      opacity:.4;
      pointer-events:none;
    }
    .cta-content{
      position:relative;
      z-index:1;
      align-items:center;
      gap:32px;
    }
    .contact-form{
      background:#fff;
      border:1px solid rgba(226,232,240,.92);
      border-radius:24px;
      padding:24px;
      box-shadow:var(--shadow-card);
    }
    .form-title{
      color:var(--color-title);
      font-size:19px;
      font-weight:850;
      margin-bottom:16px;
    }
    .form-field{margin-bottom:14px}
    .form-field label{
      display:block;
      color:var(--color-title);
      font-size:14px;
      font-weight:800;
      margin-bottom:7px;
    }
    .form-field input,
    .form-field textarea{
      width:100%;
      border:1px solid #D8E3F0;
      border-radius:14px;
      background:#fff;
      box-shadow:none;
      min-height:46px;
      padding:11px 13px;
      color:var(--color-title);
      font-size:15px;
      transition:border-color .2s ease,box-shadow .2s ease;
      margin:0;
    }
    .form-field textarea{
      min-height:96px;
      resize:vertical;
    }
    .form-field input:focus,
    .form-field textarea:focus{
      border-color:var(--color-primary);
      box-shadow:0 0 0 4px rgba(37,99,235,.1);
    }
    .form-hint{
      font-size:13px;
      color:var(--color-muted);
      line-height:1.6;
      margin-top:12px;
    }

    .site-footer{
      background:var(--color-footer);
      color:#CBD5E1;
      padding:64px 0 28px;
      position:relative;
    }
    .site-footer::before{
      content:"";
      position:absolute;
      left:0;
      right:0;
      top:0;
      height:3px;
      background:linear-gradient(90deg,var(--color-primary),var(--color-cyan),transparent);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.25fr .75fr .85fr .9fr;
      gap:34px;
      padding-bottom:40px;
      border-bottom:1px solid rgba(148,163,184,.2);
    }
    .footer-brand .brand{color:#fff;margin-bottom:16px}
    .footer-brand .brand-sub{color:#94A3B8}
    .footer-brand p{
      color:#CBD5E1;
      line-height:1.85;
      max-width:360px;
      font-size:15px;
    }
    .footer-title{
      color:#fff;
      font-size:16px;
      font-weight:850;
      margin-bottom:16px;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .footer-links a,
    .footer-links span{
      color:#CBD5E1;
      font-size:14px;
    }
    .footer-links a:hover{
      color:#93C5FD;
      text-decoration:underline;
      text-underline-offset:4px;
    }
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:16px;
      padding-top:24px;
      color:#94A3B8;
      font-size:14px;
      flex-wrap:wrap;
    }

    @media (prefers-reduced-motion:reduce){
      *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}
    }
    @media (max-width:1024px){
      .site-container{width:min(100% - 40px,var(--container))}
      .hero{min-height:auto;padding:66px 0}
      .hero-grid{gap:30px}
      .service-layout,
      .news-layout{grid-template-columns:1fr}
      .stats-grid{grid-template-columns:repeat(2,1fr)}
      .process-grid{grid-template-columns:repeat(2,1fr)}
      .process-grid::before{display:none}
      .process-card:nth-child(even){margin-top:0}
      .scenario-intro{position:static}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      :root{--header-height:66px}
      .site-container{width:min(100% - 32px,var(--container))}
      .section{padding:64px 0}
      .section-compact{padding:56px 0}
      .top-bar-left{min-width:0}
      .brand-name{font-size:14px;max-width:210px;overflow:hidden;text-overflow:ellipsis}
      .brand-sub{display:none}
      .menu-toggle{display:flex}
      .nav-wrap{
        position:absolute;
        left:16px;
        right:16px;
        top:74px;
        display:none;
        padding:14px;
        border-radius:20px;
        background:#fff;
        border:1px solid rgba(226,232,240,.92);
        box-shadow:0 18px 45px rgba(15,23,42,.12);
      }
      .nav-wrap.is-open{display:block}
      .main-menu{
        flex-direction:column;
        align-items:stretch;
        gap:6px;
      }
      .main-menu a{
        width:100%;
        justify-content:center;
        min-height:46px;
      }
      .nav-wrap .btn{width:100%;margin-top:10px}
      .hero{padding:48px 0 58px}
      .hero-actions{flex-direction:column}
      .hero-actions .btn{width:100%}
      .trust-row{grid-template-columns:1fr}
      .service-grid{grid-template-columns:1fr}
      .scenario-card{grid-template-columns:auto 1fr}
      .scenario-card .text-link{grid-column:2}
      .news-head-row{align-items:flex-start;flex-direction:column}
      .news-list-card{grid-template-columns:1fr}
      .read-more{width:auto;height:40px}
      .faq-grid,
      .cta-content{gap:24px}
      .cta-box{padding:24px;border-radius:24px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column}
    }
    @media (max-width:520px){
      .site-container{width:min(100% - 28px,var(--container))}
      .brand-mark{width:38px;height:38px;border-radius:14px;font-size:20px}
      .brand-name{max-width:180px}
      .hero-badge{font-size:13px}
      .service-panel,.service-main,.news-main-card,.contact-form{padding:20px}
      .stats-grid{grid-template-columns:1fr}
      .stat-card{padding:24px 20px}
      .process-grid{grid-template-columns:1fr}
      .panel-top{align-items:flex-start;flex-direction:column}
      .btn{width:100%}
    }

/* roulang page: article */
:root{
      --primary:#2563EB;
      --primary-dark:#1D4ED8;
      --primary-soft:#EEF6FF;
      --cyan:#06B6D4;
      --cyan-dark:#0891B2;
      --amber:#F59E0B;
      --bg:#F8FBFF;
      --bg-2:#F3F8FE;
      --card:#FFFFFF;
      --title:#0F172A;
      --text:#334155;
      --muted:#64748B;
      --line:#E2E8F0;
      --line-2:#E5EAF2;
      --footer:#0F172A;
      --radius-sm:12px;
      --radius:18px;
      --radius-lg:24px;
      --shadow:0 14px 35px rgba(15,23,42,.06);
      --shadow-hover:0 20px 45px rgba(37,99,235,.12);
      --container:1180px;
      --ease:all .22s 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:linear-gradient(180deg,#F8FBFF 0%,#FFFFFF 46%,#F8FBFF 100%);
      line-height:1.8;
      font-size:16px;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--primary)}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(37,99,235,.16);color:var(--title)}
    .site-container{
      width:min(100% - 48px,var(--container));
      margin-inline:auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:80;
      background:rgba(255,255,255,.92);
      backdrop-filter:saturate(160%) blur(14px);
      border-bottom:1px solid rgba(226,232,240,.85);
      box-shadow:0 10px 28px rgba(15,23,42,.04);
    }
    .top-bar{
      min-height:72px;
      padding:0;
      background:transparent;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .top-bar-left,.top-bar-right{display:flex;align-items:center}
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      color:var(--title);
      min-width:0;
    }
    .brand:hover{color:var(--title)}
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#fff;
      font-weight:800;
      font-size:22px;
      background:
        radial-gradient(circle at 30% 24%,rgba(255,255,255,.36),transparent 32%),
        linear-gradient(135deg,var(--primary),var(--cyan));
      box-shadow:0 12px 26px rgba(37,99,235,.22);
      flex:0 0 auto;
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
    .brand-name{font-size:17px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
    .brand-sub{font-size:12px;color:var(--muted);font-weight:600;margin-top:3px}
    .nav-wrap{
      display:flex;
      align-items:center;
      gap:24px;
    }
    .main-menu{
      display:flex;
      align-items:center;
      gap:8px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .main-menu a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:40px;
      padding:0 16px;
      border-radius:999px;
      color:var(--text);
      font-size:15px;
      font-weight:700;
    }
    .main-menu a:hover,.main-menu a.active{
      color:var(--primary);
      background:rgba(37,99,235,.09);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:0 20px;
      border-radius:999px;
      border:1px solid transparent;
      font-size:15px;
      font-weight:800;
      line-height:1;
      transition:var(--ease);
      text-align:center;
      box-shadow:none;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-dark));
      box-shadow:0 14px 26px rgba(37,99,235,.22);
    }
    .btn-primary:hover,.btn-primary:focus{
      color:#fff;
      transform:translateY(-1px);
      box-shadow:0 18px 32px rgba(37,99,235,.28);
    }
    .btn-secondary{
      color:var(--primary);
      background:#fff;
      border-color:rgba(37,99,235,.22);
    }
    .btn-secondary:hover{
      color:var(--primary-dark);
      border-color:rgba(37,99,235,.42);
      transform:translateY(-1px);
      box-shadow:var(--shadow);
    }
    .btn:active{transform:translateY(0) scale(.99)}
    .btn:focus-visible,
    .main-menu a:focus-visible,
    .brand:focus-visible,
    .footer-links a:focus-visible,
    .article-content a:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    button:focus-visible{
      outline:3px solid rgba(37,99,235,.22);
      outline-offset:3px;
    }
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border:1px solid var(--line);
      border-radius:14px;
      background:#fff;
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      transition:var(--ease);
    }
    .menu-toggle span{
      width:18px;
      height:2px;
      background:var(--title);
      border-radius:99px;
      transition:var(--ease);
    }
    .menu-toggle:hover{border-color:rgba(37,99,235,.35);box-shadow:var(--shadow)}
    .menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .menu-toggle.is-open span:nth-child(2){opacity:0}
    .menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
    .article-hero{
      position:relative;
      padding:66px 0 56px;
      overflow:hidden;
      background:
        radial-gradient(circle at 12% 18%,rgba(6,182,212,.12),transparent 28%),
        radial-gradient(circle at 86% 18%,rgba(37,99,235,.13),transparent 30%),
        linear-gradient(180deg,#F8FBFF 0%,#EEF6FF 100%);
      border-bottom:1px solid rgba(226,232,240,.8);
    }
    .article-hero:before{
      content:"";
      position:absolute;
      inset:0;
      opacity:.42;
      background-image:radial-gradient(rgba(37,99,235,.18) 1px,transparent 1px);
      background-size:22px 22px;
      mask-image:linear-gradient(90deg,transparent 0%,#000 16%,#000 82%,transparent 100%);
      pointer-events:none;
    }
    .article-hero-inner{position:relative;z-index:1;max-width:920px}
    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin:0 0 20px;
      padding:0;
      list-style:none;
      color:var(--muted);
      font-size:14px;
      font-weight:650;
    }
    .breadcrumb li{display:flex;align-items:center;gap:8px}
    .breadcrumb li:not(:last-child)::after{content:"/";color:#94A3B8}
    .breadcrumb a:hover{text-decoration:underline;text-underline-offset:3px}
    .meta-row{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:18px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      min-height:28px;
      padding:0 11px;
      border-radius:999px;
      font-size:13px;
      font-weight:800;
      color:var(--primary-dark);
      background:rgba(37,99,235,.1);
      border:1px solid rgba(37,99,235,.14);
    }
    .badge-cyan{
      color:#0E7490;
      background:rgba(6,182,212,.1);
      border-color:rgba(6,182,212,.2);
    }
    .article-hero h1{
      margin:0;
      color:var(--title);
      font-size:clamp(30px,4vw,44px);
      line-height:1.22;
      font-weight:850;
      letter-spacing:-.035em;
    }
    .article-desc{
      margin:18px 0 0;
      max-width:820px;
      color:var(--text);
      font-size:17px;
      line-height:1.85;
    }
    .main{
      padding:64px 0 88px;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 320px;
      gap:32px;
      align-items:start;
    }
    .content-card,
    .side-card,
    .related-card,
    .contact-panel{
      background:var(--card);
      border:1px solid rgba(226,232,240,.92);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
    }
    .content-card{
      padding:38px;
      overflow:hidden;
    }
    .article-content{
      color:var(--text);
      font-size:17px;
      line-height:1.95;
      word-break:break-word;
    }
    .article-content p{margin:0 0 1.15em}
    .article-content h2{
      margin:2.05em 0 .8em;
      color:var(--title);
      font-size:28px;
      line-height:1.35;
      font-weight:820;
      letter-spacing:-.02em;
    }
    .article-content h3{
      margin:1.65em 0 .7em;
      color:var(--title);
      font-size:22px;
      line-height:1.45;
      font-weight:780;
    }
    .article-content h4{
      margin:1.4em 0 .6em;
      color:var(--title);
      font-size:19px;
      font-weight:760;
    }
    .article-content ul,
    .article-content ol{
      margin:0 0 1.2em 1.35em;
      padding:0;
    }
    .article-content li{margin:.35em 0;padding-left:.2em}
    .article-content a{
      color:var(--primary);
      font-weight:700;
      border-bottom:1px solid rgba(37,99,235,.25);
    }
    .article-content a:hover{
      color:var(--primary-dark);
      border-color:var(--primary-dark);
    }
    .article-content blockquote{
      margin:1.6em 0;
      padding:18px 20px;
      border-left:4px solid var(--primary);
      background:linear-gradient(180deg,#F8FBFF,#EEF6FF);
      border-radius:14px;
      color:#1E3A8A;
      font-weight:600;
    }
    .article-content img{
      margin:1.6em auto;
      border-radius:16px;
      box-shadow:0 16px 38px rgba(15,23,42,.08);
    }
    .article-content table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin:1.5em 0;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:14px;
      display:block;
      max-width:100%;
      overflow-x:auto;
    }
    .article-content th,
    .article-content td{
      padding:12px 14px;
      border-bottom:1px solid var(--line-2);
      white-space:nowrap;
    }
    .article-content th{
      color:var(--title);
      background:#EEF6FF;
      font-weight:800;
    }
    .article-content tr:last-child td{border-bottom:0}
    .article-content code{
      padding:.14em .42em;
      border-radius:8px;
      background:#F1F5F9;
      color:#0F172A;
      font-size:.92em;
    }
    .empty-state{
      padding:38px 24px;
      border-radius:20px;
      border:1px dashed rgba(37,99,235,.28);
      background:linear-gradient(180deg,#F8FBFF,#FFFFFF);
      text-align:center;
    }
    .empty-icon{
      width:58px;
      height:58px;
      border-radius:18px;
      margin:0 auto 16px;
      display:grid;
      place-items:center;
      color:var(--primary);
      font-weight:900;
      font-size:24px;
      background:rgba(37,99,235,.1);
    }
    .empty-state h2{
      margin:0 0 10px;
      color:var(--title);
      font-size:24px;
      font-weight:820;
    }
    .empty-state p{margin:0 0 22px;color:var(--muted)}
    .article-sidebar{
      position:sticky;
      top:96px;
      display:flex;
      flex-direction:column;
      gap:18px;
    }
    .side-card{
      padding:22px;
    }
    .side-title{
      margin:0 0 16px;
      color:var(--title);
      font-size:18px;
      font-weight:820;
      display:flex;
      align-items:center;
      gap:10px;
    }
    .side-title:before{
      content:"";
      width:10px;
      height:10px;
      border-radius:999px;
      background:linear-gradient(135deg,var(--primary),var(--cyan));
      box-shadow:0 0 0 6px rgba(37,99,235,.08);
    }
    .info-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }
    .info-list li{
      display:flex;
      justify-content:space-between;
      gap:14px;
      padding-bottom:12px;
      border-bottom:1px solid var(--line-2);
      color:var(--muted);
      font-size:14px;
    }
    .info-list li:last-child{border-bottom:0;padding-bottom:0}
    .info-list strong{color:var(--title);font-weight:800}
    .recommend-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }
    .recommend-list a{
      display:block;
      padding:13px 14px;
      border-radius:14px;
      background:#F8FBFF;
      border:1px solid rgba(226,232,240,.85);
      color:var(--text);
      font-weight:750;
      line-height:1.55;
    }
    .recommend-list a:hover{
      color:var(--primary);
      border-color:rgba(37,99,235,.28);
      background:#EEF6FF;
      transform:translateY(-1px);
    }
    .small-note{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
    }
    .side-actions{
      display:grid;
      gap:10px;
      margin-top:16px;
    }
    .article-after{
      margin-top:28px;
      display:grid;
      gap:24px;
    }
    .related-card{
      padding:28px;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:18px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-bottom:8px;
      color:var(--primary);
      font-size:14px;
      font-weight:850;
    }
    .section-kicker:before{
      content:"";
      width:20px;
      height:2px;
      border-radius:99px;
      background:var(--cyan);
    }
    .section-title{
      margin:0;
      color:var(--title);
      font-size:26px;
      line-height:1.35;
      font-weight:850;
      letter-spacing:-.025em;
    }
    .related-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:16px;
    }
    .related-item{
      padding:18px;
      border-radius:18px;
      background:#F8FBFF;
      border:1px solid rgba(226,232,240,.9);
      transition:var(--ease);
    }
    .related-item:hover{
      transform:translateY(-3px);
      border-color:rgba(37,99,235,.28);
      box-shadow:var(--shadow-hover);
    }
    .related-item span{
      display:inline-flex;
      margin-bottom:10px;
      color:var(--cyan-dark);
      font-size:13px;
      font-weight:850;
    }
    .related-item h3{
      margin:0 0 8px;
      color:var(--title);
      font-size:17px;
      line-height:1.55;
      font-weight:820;
    }
    .related-item p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
    }
    .contact-panel{
      position:relative;
      overflow:hidden;
      padding:30px;
      background:
        radial-gradient(circle at 86% 18%,rgba(6,182,212,.18),transparent 28%),
        linear-gradient(135deg,#EEF6FF,#FFFFFF);
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:24px;
      align-items:center;
    }
    .contact-panel h2{
      margin:0 0 10px;
      color:var(--title);
      font-size:26px;
      line-height:1.35;
      font-weight:850;
    }
    .contact-panel p{
      margin:0;
      color:var(--text);
      max-width:680px;
    }
    .contact-actions{
      display:flex;
      justify-content:flex-end;
      flex-wrap:wrap;
      gap:12px;
    }
    .footer-spacer{height:0}
    .site-footer{
      background:var(--footer);
      color:#CBD5E1;
      padding:58px 0 26px;
      position:relative;
      overflow:hidden;
    }
    .site-footer:before{
      content:"";
      position:absolute;
      top:0;
      left:0;
      right:0;
      height:1px;
      background:linear-gradient(90deg,transparent,rgba(147,197,253,.6),transparent);
    }
    .footer-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.45fr .75fr .75fr 1fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(148,163,184,.2);
    }
    .site-footer .brand-name{color:#fff}
    .site-footer .brand-sub{color:#94A3B8}
    .footer-brand p{
      margin:18px 0 0;
      max-width:390px;
      color:#CBD5E1;
      line-height:1.8;
      font-size:14px;
    }
    .footer-title{
      color:#fff;
      font-weight:850;
      margin-bottom:14px;
      font-size:16px;
    }
    .footer-links{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:9px;
    }
    .footer-links a,.footer-links span{
      color:#CBD5E1;
      font-size:14px;
    }
    .footer-links a:hover{color:#93C5FD;text-decoration:underline;text-underline-offset:4px}
    .footer-bottom{
      position:relative;
      z-index:1;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      padding-top:22px;
      color:#94A3B8;
      font-size:13px;
    }
    @media (prefers-reduced-motion:reduce){
      *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition:none!important}
    }
    @media (max-width:1024px){
      .article-layout{grid-template-columns:1fr}
      .article-sidebar{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
      .article-sidebar .side-card:last-child{grid-column:1/-1}
      .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .site-container{width:min(100% - 32px,var(--container))}
      .top-bar{min-height:66px}
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .brand-name{font-size:15px}
      .brand-sub{font-size:11px}
      .menu-toggle{display:flex}
      .nav-wrap{
        position:absolute;
        top:76px;
        left:16px;
        right:16px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:14px;
        padding:16px;
        background:#fff;
        border:1px solid rgba(226,232,240,.95);
        border-radius:20px;
        box-shadow:0 22px 48px rgba(15,23,42,.12);
      }
      .nav-wrap.is-open{display:flex}
      .main-menu{display:grid;gap:8px}
      .main-menu a{justify-content:flex-start;min-height:44px}
      .nav-wrap .btn{width:100%}
      .article-hero{padding:46px 0 42px}
      .article-desc{font-size:16px}
      .main{padding:42px 0 66px}
      .content-card{padding:26px 22px;border-radius:20px}
      .article-content{font-size:16px;line-height:1.9}
      .article-content h2{font-size:24px}
      .article-content h3{font-size:20px}
      .article-sidebar{grid-template-columns:1fr}
      .section-head{display:block}
      .related-grid{grid-template-columns:1fr}
      .contact-panel{grid-template-columns:1fr;padding:24px}
      .contact-actions{justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr;gap:26px}
    }
    @media (max-width:520px){
      .site-container{width:min(100% - 28px,var(--container))}
      .brand-text{max-width:210px}
      .brand-name{overflow:hidden;text-overflow:ellipsis}
      .breadcrumb{font-size:13px}
      .meta-row{gap:8px}
      .badge{font-size:12px}
      .content-card{padding:22px 18px}
      .side-card,.related-card{padding:20px}
      .contact-actions .btn,.side-actions .btn{width:100%}
      .footer-bottom{display:grid}
    }