/* roulang page: index */
:root{
      --bg:#f5f8fd;
      --bg-2:#edf3fb;
      --card:#ffffff;
      --text:#14314f;
      --muted:#64748b;
      --line:#d8e2f0;
      --primary:#2d6cdf;
      --primary-2:#163f91;
      --accent:#4f86ff;
      --success:#16835f;
      --warning:#b66b00;
      --shadow:0 18px 40px rgba(19, 49, 79, .08);
      --shadow-sm:0 8px 24px rgba(19, 49, 79, .08);
      --radius:20px;
      --radius-sm:14px;
      --container:1180px;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(45,108,223,.12), transparent 28%),
        radial-gradient(circle at top right, rgba(79,134,255,.10), transparent 24%),
        linear-gradient(180deg, #f8fbff 0%, var(--bg) 44%, #f7faff 100%);
      line-height:1.7;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    a:hover{color:var(--primary)}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    ::selection{background:rgba(45,108,223,.18);color:var(--primary-2)}
    .site-wrap{min-height:100vh}
    .container-xl.custom-container{max-width:var(--container)}
    .topbar{
      background:rgba(255,255,255,.86);
      backdrop-filter: blur(12px);
      border-bottom:1px solid rgba(216,226,240,.9);
      box-shadow:0 1px 0 rgba(255,255,255,.45);
      position:sticky;
      top:0;
      z-index:1030;
    }
    .brand-line{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:14px 0 10px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:14px;
      min-width:0;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      background:linear-gradient(145deg, var(--primary), var(--primary-2));
      color:#fff;
      display:grid;
      place-items:center;
      box-shadow:0 12px 24px rgba(45,108,223,.28);
      font-weight:800;
      letter-spacing:.08em;
      flex:0 0 auto;
    }
    .brand-text{min-width:0}
    .brand-name{
      font-size:1.02rem;
      font-weight:800;
      letter-spacing:.02em;
      margin:0;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-sub{
      font-size:.84rem;
      color:var(--muted);
      margin:2px 0 0;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .top-right{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .search-box{
      width:min(340px, 36vw);
      position:relative;
    }
    .search-box input{
      width:100%;
      border:1px solid var(--line);
      background:rgba(255,255,255,.92);
      border-radius:999px;
      padding:11px 18px 11px 44px;
      outline:none;
      box-shadow:0 8px 20px rgba(19,49,79,.04);
      transition:.2s ease;
      color:var(--text);
    }
    .search-box input:focus{
      border-color:rgba(45,108,223,.45);
      box-shadow:0 0 0 .25rem rgba(45,108,223,.12);
    }
    .search-box .icon{
      position:absolute;
      left:16px;
      top:50%;
      transform:translateY(-50%);
      color:#7a8da7;
      font-size:.95rem;
    }
    .hot-tags{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
      justify-content:flex-end;
      max-width: 380px;
    }
    .hot-tags .tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 11px;
      border-radius:999px;
      border:1px solid transparent;
      background:linear-gradient(180deg, #f8fbff, #eef4fc);
      color:#385579;
      font-size:.82rem;
      line-height:1;
      transition:.2s ease;
    }
    .hot-tags .tag:hover{
      border-color:rgba(45,108,223,.18);
      color:var(--primary);
      transform:translateY(-1px);
      box-shadow:var(--shadow-sm);
    }
    .navbar{
      padding:0;
      border-top:1px solid rgba(216,226,240,.65);
    }
    .nav-wrap{
      display:flex;
      align-items:center;
      gap:14px;
      padding:10px 0 14px;
    }
    .nav-links{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
      align-items:center;
      min-width:0;
    }
    .nav-links a{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 15px;
      border-radius:999px;
      color:#39536f;
      border:1px solid transparent;
      background:transparent;
      transition:.2s ease;
      font-weight:600;
      font-size:.95rem;
    }
    .nav-links a:hover,
    .nav-links a:focus{
      background:#eef4ff;
      border-color:rgba(45,108,223,.12);
      color:var(--primary-2);
      box-shadow:0 8px 16px rgba(45,108,223,.08);
    }
    .nav-links a.active{
      background:linear-gradient(135deg, rgba(45,108,223,.14), rgba(79,134,255,.12));
      color:var(--primary-2);
      border-color:rgba(45,108,223,.15);
    }
    .nav-cta{
      margin-left:auto;
      display:flex;
      gap:10px;
      flex:0 0 auto;
    }
    .btn-ui{
      border:none;
      border-radius:999px;
      padding:11px 18px;
      font-weight:700;
      transition:.22s ease;
      text-decoration:none;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      box-shadow:none;
    }
    .btn-primary-ui{
      background:linear-gradient(135deg, var(--primary), var(--primary-2));
      color:#fff;
      box-shadow:0 16px 28px rgba(45,108,223,.22);
    }
    .btn-primary-ui:hover,
    .btn-primary-ui:focus{
      color:#fff;
      transform:translateY(-1px);
      box-shadow:0 20px 32px rgba(45,108,223,.28);
    }
    .btn-light-ui{
      background:#fff;
      color:var(--primary-2);
      border:1px solid rgba(45,108,223,.14);
      box-shadow:var(--shadow-sm);
    }
    .btn-light-ui:hover,
    .btn-light-ui:focus{
      background:#f7faff;
      color:var(--primary);
      transform:translateY(-1px);
      box-shadow:0 14px 24px rgba(19,49,79,.08);
    }
    .hero{
      padding:34px 0 18px;
    }
    .hero-shell{
      background:
        linear-gradient(135deg, rgba(22,63,145,.96), rgba(45,108,223,.94)),
        linear-gradient(135deg, #163f91, #2d6cdf);
      border-radius:28px;
      padding:26px;
      color:#fff;
      position:relative;
      overflow:hidden;
      box-shadow:0 28px 60px rgba(22,63,145,.24);
      min-height: 420px;
    }
    .hero-shell::before{
      content:"";
      position:absolute;
      inset:auto -10% -30% auto;
      width:320px;
      height:320px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(255,255,255,.24), transparent 65%);
      pointer-events:none;
    }
    .hero-shell::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(110deg, rgba(255,255,255,.10) 0 2px, transparent 2px 100%),
        linear-gradient(180deg, rgba(255,255,255,.08), transparent 35%);
      opacity:.55;
      pointer-events:none;
      mix-blend-mode:screen;
    }
    .hero-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap:20px;
      align-items:stretch;
    }
    .hero-copy{
      padding:22px 10px 6px 8px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.14);
      color:#edf4ff;
      font-size:.88rem;
      margin-bottom:18px;
    }
    .hero h1{
      margin:0 0 16px;
      font-size:clamp(2rem, 4vw, 3.8rem);
      line-height:1.1;
      font-weight:900;
      letter-spacing:-.03em;
      max-width: 12ch;
    }
    .hero p{
      margin:0 0 20px;
      font-size:1.05rem;
      color:rgba(245,248,255,.92);
      max-width: 58ch;
    }
    .hero-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      margin:22px 0 18px;
    }
    .hero-metrics{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      margin-top:6px;
    }
    .metric-chip{
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.12);
      border-radius:18px;
      padding:12px 14px;
      min-width: 142px;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
    }
    .metric-chip strong{
      display:block;
      font-size:1.05rem;
      color:#fff;
      margin-bottom:2px;
    }
    .metric-chip span{
      color:rgba(235,243,255,.86);
      font-size:.86rem;
    }
    .hero-visual{
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.14);
      border-radius:24px;
      padding:18px;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height: 370px;
      position:relative;
      overflow:hidden;
    }
    .visual-frame{
      border-radius:22px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.14), rgba(255,255,255,.06)),
        url('https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1200&q=80') center/cover;
      min-height: 240px;
      position:relative;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.12);
      box-shadow:0 18px 36px rgba(0,0,0,.22);
    }
    .visual-frame::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, transparent 0%, rgba(8,20,39,.18) 56%, rgba(8,20,39,.55) 100%);
    }
    .play-badge{
      position:absolute;
      left:16px;
      bottom:16px;
      z-index:1;
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:10px 14px;
      border-radius:999px;
      background:rgba(15,31,58,.72);
      color:#fff;
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter: blur(10px);
      font-size:.9rem;
    }
    .play-dot{
      width:12px;
      height:12px;
      border-radius:50%;
      background:#4ade80;
      box-shadow:0 0 0 0 rgba(74,222,128,.55);
      animation:pulse 1.8s infinite;
    }
    @keyframes pulse{
      0%{box-shadow:0 0 0 0 rgba(74,222,128,.45)}
      70%{box-shadow:0 0 0 12px rgba(74,222,128,0)}
      100%{box-shadow:0 0 0 0 rgba(74,222,128,0)}
    }
    .stack-card{
      margin-top:14px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      border-radius:18px;
      padding:14px 16px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
    }
    .stack-card .left strong{
      display:block;
      font-size:1rem;
      color:#fff;
    }
    .stack-card .left span{
      display:block;
      font-size:.86rem;
      color:rgba(235,243,255,.86);
    }
    .stack-card .right{
      min-width:82px;
      text-align:right;
      color:#dce9ff;
      font-size:.82rem;
    }
    .section{
      padding:22px 0;
    }
    .section-head{
      margin-bottom:18px;
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }
    .section-title{
      margin:0;
      font-size:clamp(1.35rem, 2vw, 2rem);
      font-weight:850;
      letter-spacing:-.02em;
    }
    .section-desc{
      margin:8px 0 0;
      color:var(--muted);
      max-width:72ch;
      font-size:.98rem;
    }
    .panel{
      background:rgba(255,255,255,.9);
      border:1px solid rgba(216,226,240,.9);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .panel-body{
      padding:22px;
    }
    .kpi-grid{
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap:18px;
    }
    .kpi-main{
      padding:24px;
      position:relative;
      min-height: 100%;
    }
    .kpi-main .labels{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
      margin-bottom:14px;
    }
    .badge-ui{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 11px;
      border-radius:999px;
      font-size:.82rem;
      font-weight:700;
      background:#edf4ff;
      color:var(--primary-2);
      border:1px solid rgba(45,108,223,.12);
    }
    .kpi-main h2{
      margin:0 0 12px;
      font-size:1.52rem;
      font-weight:850;
      line-height:1.3;
    }
    .kpi-main p{
      color:var(--muted);
      margin:0 0 18px;
      max-width:58ch;
    }
    .kpi-list{
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:12px;
      margin-top:12px;
    }
    .kpi-item{
      background:linear-gradient(180deg, #ffffff, #f8fbff);
      border:1px solid var(--line);
      border-radius:18px;
      padding:16px;
      box-shadow:0 10px 20px rgba(19,49,79,.04);
      transition:.2s ease;
    }
    .kpi-item:hover{
      transform:translateY(-2px);
      box-shadow:0 16px 28px rgba(19,49,79,.08);
    }
    .kpi-item .num{
      font-size:1.55rem;
      font-weight:900;
      color:var(--primary-2);
      letter-spacing:-.02em;
      line-height:1;
      margin-bottom:8px;
    }
    .kpi-item .txt{
      color:#39536f;
      font-size:.92rem;
      margin:0;
    }
    .side-rail{
      display:grid;
      gap:14px;
    }
    .mini-card{
      padding:18px;
      border-radius:22px;
      background:linear-gradient(180deg, #ffffff, #f5f8fd);
      border:1px solid var(--line);
      box-shadow:0 12px 26px rgba(19,49,79,.05);
    }
    .mini-card h3{
      margin:0 0 8px;
      font-size:1.02rem;
      font-weight:800;
    }
    .mini-card p{
      margin:0;
      color:var(--muted);
      font-size:.92rem;
    }
    .mini-list{
      list-style:none;
      padding:0;
      margin:14px 0 0;
      display:grid;
      gap:10px;
    }
    .mini-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#39536f;
      font-size:.92rem;
    }
    .mini-list li::before{
      content:"";
      width:10px;
      height:10px;
      margin-top:8px;
      border-radius:50%;
      background:linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow:0 0 0 4px rgba(45,108,223,.08);
      flex:0 0 auto;
    }
    .news-layout{
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:18px;
    }
    .news-list{
      padding:18px;
    }
    .news-list .list-group{
      border-radius:18px;
      overflow:hidden;
    }
    .news-list .list-group-item{
      border-color:rgba(216,226,240,.82);
      padding:15px 10px;
      background:transparent;
      display:flex;
      justify-content:space-between;
      align-items:flex-start;
      gap:18px;
      transition:.2s ease;
    }
    .news-list .list-group-item:hover{
      background:#f8fbff;
      padding-left:14px;
    }
    .news-list .title{
      display:block;
      font-weight:700;
      color:var(--text);
      margin-bottom:4px;
    }
    .news-list .meta{
      color:var(--muted);
      font-size:.86rem;
      margin:0;
    }
    .news-list .arrow{
      color:var(--primary);
      font-weight:700;
      flex:0 0 auto;
      margin-top:2px;
    }
    .feature-col{
      display:grid;
      gap:14px;
    }
    .feature-card{
      position:relative;
      padding:18px;
      border-radius:22px;
      background:linear-gradient(180deg, #ffffff, #f7faff);
      border:1px solid var(--line);
      box-shadow:0 12px 24px rgba(19,49,79,.05);
      transition:.22s ease;
    }
    .feature-card:hover{
      transform:translateY(-2px);
      box-shadow:0 18px 34px rgba(19,49,79,.08);
    }
    .feature-card .top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      margin-bottom:10px;
      gap:12px;
    }
    .feature-card h3{
      font-size:1.02rem;
      margin:0;
      font-weight:800;
    }
    .feature-card .kicker{
      font-size:.78rem;
      color:var(--success);
      background:rgba(22,131,95,.08);
      padding:6px 10px;
      border-radius:999px;
      white-space:nowrap;
    }
    .feature-card p{
      color:var(--muted);
      margin:0;
      font-size:.92rem;
    }
    .service-grid{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:16px;
    }
    .service-card{
      background:rgba(255,255,255,.94);
      border:1px solid rgba(216,226,240,.9);
      border-radius:22px;
      padding:20px;
      box-shadow:var(--shadow-sm);
      transition:.22s ease;
      position:relative;
      overflow:hidden;
      min-height: 206px;
    }
    .service-card::before{
      content:"";
      position:absolute;
      inset:-45px auto auto -45px;
      width:110px;
      height:110px;
      background:radial-gradient(circle, rgba(45,108,223,.12), transparent 70%);
    }
    .service-card:hover{
      transform:translateY(-4px);
      box-shadow:0 18px 34px rgba(19,49,79,.08);
    }
    .service-card .icon{
      width:52px;
      height:52px;
      border-radius:16px;
      display:grid;
      place-items:center;
      font-size:1.2rem;
      background:linear-gradient(135deg, rgba(45,108,223,.14), rgba(79,134,255,.14));
      color:var(--primary-2);
      margin-bottom:14px;
    }
    .service-card h3{
      margin:0 0 8px;
      font-weight:800;
      font-size:1.04rem;
    }
    .service-card p{
      margin:0 0 14px;
      color:var(--muted);
      font-size:.92rem;
    }
    .service-card ul{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:8px;
    }
    .service-card li{
      display:flex;
      gap:8px;
      align-items:flex-start;
      color:#39536f;
      font-size:.9rem;
    }
    .service-card li::before{
      content:"";
      width:8px;
      height:8px;
      margin-top:8px;
      border-radius:999px;
      background:var(--primary);
      flex:0 0 auto;
    }
    .app-block{
      display:grid;
      grid-template-columns: .9fr 1.1fr;
      gap:18px;
      align-items:stretch;
    }
    .app-preview{
      min-height:100%;
      border-radius:26px;
      overflow:hidden;
      position:relative;
      border:1px solid var(--line);
      background:linear-gradient(180deg, #f9fbff, #eef5ff);
      box-shadow:var(--shadow);
      padding:18px;
    }
    .phone{
      max-width:320px;
      margin:0 auto;
      background:#0f1f39;
      color:#fff;
      border-radius:34px;
      padding:14px;
      box-shadow:0 24px 52px rgba(15,31,57,.24);
    }
    .phone-screen{
      background:linear-gradient(180deg, #133a7d, #2d6cdf);
      border-radius:24px;
      padding:18px;
      min-height:440px;
      position:relative;
      overflow:hidden;
    }
    .phone-screen::after{
      content:"";
      position:absolute;
      inset:auto -20% -8% auto;
      width:180px;
      height:180px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(255,255,255,.16), transparent 66%);
    }
    .phone-bar{
      display:flex;
      justify-content:space-between;
      font-size:.78rem;
      color:rgba(255,255,255,.82);
      margin-bottom:14px;
    }
    .phone-card{
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.12);
      border-radius:18px;
      padding:14px;
      margin-bottom:12px;
      backdrop-filter: blur(8px);
    }
    .phone-card strong{
      display:block;
      margin-bottom:6px;
      font-size:.96rem;
    }
    .phone-card span{
      display:block;
      color:rgba(240,246,255,.86);
      font-size:.86rem;
    }
    .phone-dots{
      display:flex;
      gap:8px;
      margin-top:14px;
    }
    .phone-dots i{
      width:10px;
      height:10px;
      border-radius:999px;
      background:rgba(255,255,255,.36);
    }
    .phone-dots i.active{background:#fff}
    .app-copy{
      padding:10px 6px;
    }
    .app-copy h3{
      margin:0 0 12px;
      font-size:1.45rem;
      font-weight:850;
    }
    .app-copy p{
      color:var(--muted);
      margin:0 0 18px;
      max-width:56ch;
    }
    .steps{
      display:grid;
      gap:12px;
    }
    .step{
      display:flex;
      gap:14px;
      align-items:flex-start;
      background:#fff;
      border:1px solid var(--line);
      border-radius:18px;
      padding:16px;
      box-shadow:0 10px 22px rgba(19,49,79,.04);
    }
    .step-num{
      width:34px;
      height:34px;
      border-radius:12px;
      background:linear-gradient(135deg, rgba(45,108,223,.14), rgba(79,134,255,.14));
      color:var(--primary-2);
      display:grid;
      place-items:center;
      font-weight:800;
      flex:0 0 auto;
    }
    .step h4{
      margin:0 0 4px;
      font-size:1rem;
      font-weight:800;
    }
    .step p{
      margin:0;
      color:var(--muted);
      font-size:.92rem;
    }
    .faq-wrap{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:18px;
    }
    .accordion{
      --bs-accordion-border-color: rgba(216,226,240,.9);
      --bs-accordion-btn-focus-box-shadow: 0 0 0 .25rem rgba(45,108,223,.10);
      --bs-accordion-active-bg: #f4f8ff;
      --bs-accordion-active-color: var(--primary-2);
      --bs-accordion-btn-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232d6cdf'%3e%3cpath fill-rule='evenodd' d='M1.5 5.5a.5.5 0 0 1 .5-.5h12a.5.5 0 0 1 0 1h-12a.5.5 0 0 1-.5-.5z'/%3e%3c/svg%3e");
      --bs-accordion-btn-active-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23163f91'%3e%3cpath fill-rule='evenodd' d='M1.5 5.5a.5.5 0 0 1 .5-.5h12a.5.5 0 0 1 0 1h-12a.5.5 0 0 1-.5-.5z'/%3e%3c/svg%3e");
    }
    .accordion-item{
      border-radius:18px;
      overflow:hidden;
      margin-bottom:12px;
      border:1px solid var(--line);
      box-shadow:0 10px 22px rgba(19,49,79,.04);
    }
    .accordion-button{
      padding:18px 18px;
      font-weight:800;
      font-size:1rem;
      color:var(--text);
      background:#fff;
    }
    .accordion-button:not(.collapsed){
      box-shadow:none;
    }
    .accordion-body{
      padding:0 18px 18px;
      color:var(--muted);
    }
    .faq-side{
      background:linear-gradient(180deg, #fff, #f8fbff);
      border:1px solid var(--line);
      border-radius:24px;
      box-shadow:var(--shadow-sm);
      padding:22px;
    }
    .faq-side h3{
      margin:0 0 10px;
      font-size:1.14rem;
      font-weight:850;
    }
    .faq-side p{
      margin:0 0 14px;
      color:var(--muted);
    }
    .check-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .check-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:#39536f;
      font-size:.93rem;
    }
    .check-list li::before{
      content:"✓";
      color:var(--success);
      font-weight:900;
      margin-top:1px;
      flex:0 0 auto;
    }
    .cta{
      padding:18px 0 30px;
    }
    .cta-shell{
      background:linear-gradient(135deg, #133b7f, #2d6cdf);
      color:#fff;
      border-radius:28px;
      padding:28px;
      box-shadow:0 28px 60px rgba(22,63,145,.22);
      overflow:hidden;
      position:relative;
    }
    .cta-shell::before{
      content:"";
      position:absolute;
      inset:auto -4% -26% auto;
      width:280px;
      height:280px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(255,255,255,.20), transparent 67%);
    }
    .cta-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:16px;
      align-items:center;
    }
    .cta-shell h2{
      margin:0 0 12px;
      font-size:clamp(1.5rem, 2.6vw, 2.35rem);
      font-weight:900;
      letter-spacing:-.02em;
    }
    .cta-shell p{
      margin:0;
      color:rgba(245,248,255,.92);
      max-width:64ch;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .cta-mini{
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.14);
      border-radius:20px;
      padding:16px;
      margin-top:16px;
      display:grid;
      gap:8px;
      grid-template-columns: repeat(3, minmax(0,1fr));
    }
    .cta-mini div{
      padding-right:12px;
      border-right:1px solid rgba(255,255,255,.12);
    }
    .cta-mini div:last-child{border-right:none;padding-right:0}
    .cta-mini strong{
      display:block;
      font-size:1.02rem;
      margin-bottom:4px;
    }
    .cta-mini span{
      color:rgba(240,246,255,.86);
      font-size:.86rem;
    }
    .footer{
      padding:26px 0 36px;
      color:#53687f;
    }
    .footer-shell{
      background:rgba(255,255,255,.9);
      border:1px solid rgba(216,226,240,.92);
      border-radius:24px;
      box-shadow:var(--shadow-sm);
      padding:22px;
    }
    .footer-top{
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:16px;
      align-items:flex-start;
      padding-bottom:18px;
      border-bottom:1px solid var(--line);
    }
    .footer-brand{
      max-width:460px;
    }
    .footer-brand strong{
      display:block;
      color:var(--text);
      font-size:1.08rem;
      margin-bottom:8px;
      font-weight:900;
    }
    .footer-brand p{
      margin:0;
      color:var(--muted);
      font-size:.92rem;
    }
    .footer-links{
      display:flex;
      gap:10px 16px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .footer-links a{
      color:#4b6784;
      font-size:.92rem;
      padding:6px 0;
    }
    .footer-links a:hover{color:var(--primary)}
    .footer-bottom{
      padding-top:16px;
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:10px;
      font-size:.88rem;
      color:#6b7f96;
    }
    .note-box{
      background:#f8fbff;
      border:1px solid rgba(216,226,240,.9);
      border-radius:18px;
      padding:14px 16px;
      color:#53687f;
      font-size:.9rem;
    }
    .sticky-cta{
      position:fixed;
      right:18px;
      bottom:18px;
      z-index:1050;
      display:flex;
      gap:10px;
      align-items:center;
    }
    .sticky-cta .btn-ui{
      box-shadow:0 18px 30px rgba(19,49,79,.16);
    }
    .scroll-top{
      width:46px;
      height:46px;
      border-radius:16px;
      background:#fff;
      border:1px solid rgba(216,226,240,.92);
      display:grid;
      place-items:center;
      box-shadow:0 12px 26px rgba(19,49,79,.12);
    }
    .scroll-top:hover{transform:translateY(-2px)}
    .section-divider{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(216,226,240,.96), transparent);
      margin:8px 0 0;
    }
    @media (max-width: 1199.98px){
      .hero-grid,.kpi-grid,.news-layout,.app-block,.faq-wrap,.cta-grid{grid-template-columns:1fr}
      .hero-shell{min-height:auto}
      .hero-visual{min-height:auto}
      .service-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .cta-actions{justify-content:flex-start}
      .search-box{width:min(280px, 30vw)}
    }
    @media (max-width: 991.98px){
      .brand-line,.nav-wrap{flex-direction:column;align-items:stretch}
      .top-right,.nav-cta{margin-left:0;justify-content:space-between;flex-wrap:wrap}
      .hot-tags{justify-content:flex-start;max-width:none}
      .search-box{width:100%}
      .nav-links{overflow-x:auto;flex-wrap:nowrap;padding-bottom:2px}
      .nav-links a{white-space:nowrap}
      .cta-mini{grid-template-columns:1fr}
      .cta-mini div{border-right:none;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:10px;margin-bottom:10px}
      .cta-mini div:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}
    }
    @media (max-width: 767.98px){
      .hero{padding-top:22px}
      .hero-shell{padding:18px}
      .hero-copy{padding:10px 4px}
      .hero h1{max-width:none}
      .metric-chip{flex:1 1 100%;min-width:0}
      .service-grid,.kpi-list{grid-template-columns:1fr}
      .panel-body{padding:16px}
      .kpi-main,.news-list{padding:16px}
      .cta-shell{padding:20px}
      .sticky-cta{left:14px;right:14px;justify-content:space-between}
      .sticky-cta .btn-ui{flex:1}
      .footer-top,.footer-bottom{flex-direction:column}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width: 520px){
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .brand-name{font-size:.98rem}
      .brand-sub{font-size:.78rem}
      .hot-tags .tag,.nav-links a{font-size:.84rem;padding:8px 12px}
      .hero h1{font-size:2rem}
      .hero p{font-size:.98rem}
      .btn-ui{width:100%}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .news-list .list-group-item{flex-direction:column}
      .news-list .arrow{align-self:flex-end}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}