/* roulang page: index */
:root{
      --primary:#2f65d9;
      --primary-dark:#194dbb;
      --primary-soft:#eaf1ff;
      --secondary:#00a7c7;
      --accent:#ffb547;
      --success:#12a474;
      --danger:#e05252;
      --ink:#14213d;
      --text:#334155;
      --muted:#64748b;
      --light:#f7faff;
      --surface:#ffffff;
      --surface-2:#f1f6ff;
      --border:#d9e4f5;
      --shadow-sm:0 8px 24px rgba(20,33,61,.08);
      --shadow-md:0 18px 50px rgba(31,78,156,.14);
      --shadow-lg:0 28px 80px rgba(18,42,88,.18);
      --radius-sm:12px;
      --radius:22px;
      --radius-lg:34px;
      --container:1180px;
      --nav-height:76px;
      --transition:all .25s ease;
    }

    *{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 10% 0%, rgba(47,101,217,.12), transparent 32%),
        linear-gradient(180deg,#f8fbff 0%,#ffffff 38%,#f7faff 100%);
      line-height:1.72;
      text-rendering:optimizeLegibility;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:var(--transition)}
    a:hover{color:var(--primary)}
    img,svg{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{border:0}
    ::selection{background:rgba(47,101,217,.18);color:var(--ink)}
    :focus-visible{
      outline:3px solid rgba(47,101,217,.35);
      outline-offset:3px;
      border-radius:10px;
    }

    .skip-link{
      position:absolute;
      left:-999px;
      top:10px;
      z-index:9999;
      padding:10px 16px;
      background:var(--ink);
      color:#fff;
      border-radius:999px;
    }
    .skip-link:focus{left:14px}

    .container-custom{
      width:min(100% - 32px,var(--container));
      margin-inline:auto;
    }
    .section{
      padding:86px 0;
      position:relative;
    }
    .section-tight{padding:62px 0}
    .section-band{
      background:linear-gradient(180deg,rgba(234,241,255,.82),rgba(255,255,255,.92));
      border-block:1px solid rgba(217,228,245,.7);
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary-dark);
      background:rgba(47,101,217,.1);
      border:1px solid rgba(47,101,217,.18);
      border-radius:999px;
      padding:7px 13px;
      font-size:14px;
      font-weight:700;
      letter-spacing:.02em;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:999px;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 0 0 5px rgba(47,101,217,.12);
    }
    .section-title{
      margin:16px 0 12px;
      color:var(--ink);
      font-weight:850;
      letter-spacing:-.03em;
      line-height:1.18;
      font-size:clamp(30px,4vw,46px);
    }
    .section-lead{
      color:var(--muted);
      font-size:17px;
      max-width:760px;
      margin:0;
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:32px;
    }
    .section-head .section-lead{max-width:620px}

    .site-header{
      position:fixed;
      inset:0 0 auto 0;
      height:var(--nav-height);
      z-index:1050;
      display:flex;
      align-items:center;
      transition:var(--transition);
      background:rgba(255,255,255,.52);
      border-bottom:1px solid rgba(255,255,255,.45);
      box-shadow:0 10px 34px rgba(31,78,156,.08);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
    }
    .site-header.is-scrolled{
      background:rgba(255,255,255,.94);
      border-bottom-color:rgba(217,228,245,.9);
      box-shadow:0 14px 36px rgba(20,33,61,.1);
    }
    .navbar{
      width:100%;
      padding:0;
    }
    .navbar-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:900;
      color:var(--ink);
      letter-spacing:-.03em;
      max-width:520px;
      white-space:normal;
      line-height:1.15;
    }
    .brand-mark{
      width:42px;
      height:42px;
      flex:0 0 42px;
      border-radius:15px;
      background:
        linear-gradient(135deg,#2f65d9,#00a7c7);
      display:grid;
      place-items:center;
      color:#fff;
      box-shadow:0 12px 28px rgba(47,101,217,.28);
      position:relative;
      overflow:hidden;
    }
    .brand-mark::after{
      content:"";
      width:16px;
      height:16px;
      border-radius:50%;
      border:3px solid rgba(255,255,255,.9);
      border-left-color:transparent;
      transform:rotate(-25deg);
    }
    .brand-text{
      font-size:16px;
    }
    .navbar-toggler{
      border:1px solid rgba(47,101,217,.18);
      background:#fff;
      border-radius:14px;
      padding:9px 11px;
      box-shadow:var(--shadow-sm);
    }
    .navbar-toggler:focus{box-shadow:0 0 0 .22rem rgba(47,101,217,.18)}
    .navbar-toggler-icon{
      width:1.15em;
      height:1.15em;
    }
    .navbar-nav{
      align-items:center;
      gap:8px;
    }
    .nav-link{
      color:var(--text);
      font-weight:750;
      border-radius:999px;
      padding:10px 16px!important;
      position:relative;
    }
    .nav-link:hover{
      color:var(--primary-dark);
      background:rgba(47,101,217,.08);
    }
    .nav-link.active{
      color:#fff!important;
      background:linear-gradient(135deg,var(--primary),var(--primary-dark));
      box-shadow:0 10px 22px rgba(47,101,217,.24);
    }
    .nav-search{
      display:flex;
      align-items:center;
      gap:8px;
      padding:8px 10px 8px 14px;
      background:rgba(255,255,255,.78);
      border:1px solid rgba(217,228,245,.9);
      border-radius:999px;
      min-width:250px;
      transition:var(--transition);
    }
    .nav-search:focus-within{
      border-color:rgba(47,101,217,.5);
      box-shadow:0 0 0 4px rgba(47,101,217,.1);
      background:#fff;
    }
    .nav-search span{color:var(--muted)}
    .nav-search input{
      border:0;
      outline:0;
      background:transparent;
      width:100%;
      color:var(--ink);
      font-size:14px;
    }
    .nav-search input::placeholder{color:#8aa0bc}
    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      background:var(--ink);
      color:#fff!important;
      border-radius:999px;
      padding:11px 17px;
      font-weight:850;
      box-shadow:0 14px 30px rgba(20,33,61,.18);
    }
    .nav-cta:hover{
      transform:translateY(-2px);
      background:var(--primary-dark);
      color:#fff!important;
      box-shadow:0 18px 36px rgba(47,101,217,.24);
    }

    .btn-modern{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      border-radius:999px;
      padding:13px 20px;
      font-weight:850;
      line-height:1.2;
      transition:var(--transition);
      border:1px solid transparent;
      min-height:48px;
      white-space:nowrap;
    }
    .btn-primary-modern{
      background:linear-gradient(135deg,var(--primary),var(--primary-dark));
      color:#fff;
      box-shadow:0 16px 34px rgba(47,101,217,.26);
    }
    .btn-primary-modern:hover{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 20px 44px rgba(47,101,217,.32);
    }
    .btn-secondary-modern{
      background:#fff;
      color:var(--primary-dark);
      border-color:rgba(47,101,217,.22);
      box-shadow:var(--shadow-sm);
    }
    .btn-secondary-modern:hover{
      color:var(--primary-dark);
      border-color:rgba(47,101,217,.45);
      transform:translateY(-2px);
      box-shadow:var(--shadow-md);
    }
    .btn-ghost-modern{
      color:var(--ink);
      background:rgba(255,255,255,.62);
      border-color:rgba(217,228,245,.9);
    }
    .btn-ghost-modern:hover{
      color:var(--primary-dark);
      background:#fff;
      border-color:rgba(47,101,217,.24);
      transform:translateY(-2px);
    }

    .hero{
      min-height:820px;
      padding:132px 0 86px;
      display:flex;
      align-items:center;
      background:
        linear-gradient(165deg,rgba(255,255,255,.65) 0%,rgba(234,241,255,.75) 48%,rgba(255,255,255,.92) 49%),
        radial-gradient(circle at 50% 20%,rgba(0,167,199,.16),transparent 34%);
      overflow:hidden;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:auto -12% -26% -12%;
      height:360px;
      background:#fff;
      transform:skewY(-4deg);
      transform-origin:left top;
      box-shadow:0 -28px 60px rgba(47,101,217,.06);
    }
    .hero-grid{
      display:grid;
      grid-template-columns:1fr minmax(340px,520px) 1fr;
      align-items:center;
      gap:24px;
      position:relative;
      z-index:1;
    }
    .hero-side{
      display:flex;
      flex-direction:column;
      gap:18px;
    }
    .hero-copy{
      background:rgba(255,255,255,.7);
      border:1px solid rgba(217,228,245,.75);
      border-radius:var(--radius-lg);
      padding:26px;
      box-shadow:var(--shadow-md);
      backdrop-filter:blur(14px);
    }
    .hero h1{
      color:var(--ink);
      font-size:clamp(34px,4.8vw,60px);
      line-height:1.08;
      font-weight:950;
      letter-spacing:-.055em;
      margin:14px 0 18px;
    }
    .hero-intro{
      color:#43546e;
      font-size:18px;
      margin:0;
    }
    .hero-points{
      display:grid;
      gap:12px;
      margin-top:22px;
    }
    .value-pill{
      display:flex;
      gap:12px;
      align-items:flex-start;
      background:#fff;
      border:1px solid rgba(217,228,245,.86);
      border-radius:18px;
      padding:14px;
      box-shadow:0 8px 22px rgba(20,33,61,.06);
      transition:var(--transition);
    }
    .value-pill:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-md);
      border-color:rgba(47,101,217,.24);
    }
    .value-icon{
      width:36px;
      height:36px;
      flex:0 0 36px;
      border-radius:13px;
      background:var(--primary-soft);
      color:var(--primary-dark);
      display:grid;
      place-items:center;
      font-weight:900;
    }
    .value-pill strong{
      display:block;
      color:var(--ink);
      margin-bottom:2px;
    }
    .value-pill span{
      color:var(--muted);
      font-size:14px;
      line-height:1.5;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .hero-mini-stats{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:10px;
      margin-top:20px;
    }
    .mini-stat{
      background:rgba(255,255,255,.74);
      border:1px solid rgba(217,228,245,.8);
      border-radius:18px;
      padding:13px;
      text-align:center;
    }
    .mini-stat b{
      display:block;
      color:var(--primary-dark);
      font-size:21px;
      line-height:1;
    }
    .mini-stat span{
      display:block;
      color:var(--muted);
      font-size:12px;
      margin-top:6px;
    }

    .product-stage{
      position:relative;
      padding:18px;
      border-radius:38px;
      background:linear-gradient(145deg,rgba(255,255,255,.92),rgba(234,241,255,.78));
      border:1px solid rgba(217,228,245,.86);
      box-shadow:var(--shadow-lg);
    }
    .product-stage::before,
    .product-stage::after{
      content:"";
      position:absolute;
      border-radius:999px;
      filter:blur(6px);
      z-index:-1;
    }
    .product-stage::before{
      width:160px;height:160px;
      background:rgba(47,101,217,.18);
      left:-38px;top:48px;
    }
    .product-stage::after{
      width:190px;height:190px;
      background:rgba(0,167,199,.14);
      right:-42px;bottom:40px;
    }
    .browser-card{
      overflow:hidden;
      border-radius:28px;
      background:#fff;
      border:1px solid rgba(217,228,245,.95);
      box-shadow:0 22px 50px rgba(20,33,61,.14);
    }
    .browser-top{
      height:48px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:0 16px;
      background:linear-gradient(180deg,#ffffff,#f4f7fd);
      border-bottom:1px solid var(--border);
    }
    .dots{display:flex;gap:7px}
    .dots i{
      width:10px;height:10px;border-radius:50%;
      background:#ff6b6b;
    }
    .dots i:nth-child(2){background:#ffc857}
    .dots i:nth-child(3){background:#2ed573}
    .secure-badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:var(--success);
      background:rgba(18,164,116,.1);
      border:1px solid rgba(18,164,116,.16);
      border-radius:999px;
      padding:5px 10px;
      font-size:12px;
      font-weight:800;
    }
    .stage-body{padding:22px}
    .stage-title{
      display:flex;
      align-items:start;
      justify-content:space-between;
      gap:18px;
      margin-bottom:18px;
    }
    .stage-title h2{
      font-size:21px;
      color:var(--ink);
      font-weight:900;
      margin:0;
      line-height:1.28;
    }
    .stage-tag{
      color:var(--primary-dark);
      background:var(--primary-soft);
      border-radius:999px;
      padding:7px 10px;
      font-size:12px;
      font-weight:850;
      white-space:nowrap;
    }
    .stage-list{
      display:grid;
      gap:12px;
      padding:0;
      margin:0;
      list-style:none;
    }
    .stage-list li{
      display:grid;
      grid-template-columns:42px 1fr auto;
      align-items:center;
      gap:12px;
      padding:12px;
      border-radius:18px;
      background:linear-gradient(180deg,#f9fbff,#ffffff);
      border:1px solid rgba(217,228,245,.78);
    }
    .rank{
      width:42px;height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      color:#fff;
      font-weight:950;
      box-shadow:0 10px 20px rgba(47,101,217,.2);
    }
    .stage-list strong{
      color:var(--ink);
      display:block;
      line-height:1.25;
    }
    .stage-list small{color:var(--muted)}
    .status-chip{
      font-size:12px;
      font-weight:850;
      padding:6px 9px;
      border-radius:999px;
      background:rgba(18,164,116,.1);
      color:var(--success);
      white-space:nowrap;
    }
    .stage-foot{
      margin-top:16px;
      padding:14px;
      border-radius:20px;
      background:linear-gradient(135deg,rgba(47,101,217,.1),rgba(0,167,199,.08));
      color:#43546e;
      font-size:14px;
      border:1px solid rgba(47,101,217,.13);
    }
    .download-box{
      background:linear-gradient(145deg,#14213d,#1d3d83);
      color:#fff;
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:var(--shadow-lg);
      position:relative;
      overflow:hidden;
    }
    .download-box::after{
      content:"";
      position:absolute;
      width:180px;height:180px;
      border-radius:50%;
      background:rgba(255,255,255,.08);
      right:-70px;top:-70px;
    }
    .download-box h2{
      position:relative;
      font-size:23px;
      font-weight:900;
      margin:0 0 10px;
    }
    .download-box p{
      position:relative;
      color:rgba(255,255,255,.78);
      margin:0 0 18px;
    }
    .download-actions{
      position:relative;
      display:grid;
      gap:10px;
    }
    .download-actions a{
      justify-content:flex-start;
      background:rgba(255,255,255,.12);
      color:#fff;
      border:1px solid rgba(255,255,255,.18);
      box-shadow:none;
    }
    .download-actions a:hover{
      background:#fff;
      color:var(--primary-dark);
      transform:translateX(3px);
    }
    .notice-strip{
      margin-top:18px;
      display:flex;
      align-items:flex-start;
      gap:10px;
      padding:14px;
      border-radius:18px;
      background:rgba(255,181,71,.14);
      border:1px solid rgba(255,181,71,.24);
      color:#66512a;
      font-size:14px;
    }

    .case-layout{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:26px;
      align-items:stretch;
    }
    .case-feature{
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid rgba(217,228,245,.9);
      box-shadow:var(--shadow-md);
      padding:34px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height:390px;
      position:relative;
      overflow:hidden;
    }
    .case-feature::after{
      content:"";
      position:absolute;
      width:260px;height:260px;
      border-radius:50%;
      background:rgba(47,101,217,.08);
      right:-90px;bottom:-110px;
    }
    .case-quote{
      position:relative;
      z-index:1;
      font-size:24px;
      line-height:1.55;
      color:var(--ink);
      font-weight:800;
      margin:20px 0;
    }
    .case-person{
      position:relative;
      z-index:1;
      display:flex;
      align-items:center;
      gap:14px;
      margin-top:24px;
    }
    .avatar{
      width:52px;height:52px;
      border-radius:18px;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      color:#fff;
      display:grid;
      place-items:center;
      font-weight:950;
      box-shadow:0 14px 28px rgba(47,101,217,.22);
    }
    .case-person strong{display:block;color:var(--ink)}
    .case-person span{color:var(--muted);font-size:14px}
    .case-stack{
      display:grid;
      gap:16px;
    }
    .case-card{
      background:#fff;
      border:1px solid rgba(217,228,245,.88);
      border-radius:24px;
      padding:22px;
      box-shadow:var(--shadow-sm);
      transition:var(--transition);
    }
    .case-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-md);
      border-color:rgba(47,101,217,.22);
    }
    .case-card h3{
      color:var(--ink);
      font-size:19px;
      font-weight:900;
      margin:0 0 8px;
    }
    .case-card p{
      color:var(--muted);
      margin:0;
      font-size:15px;
    }

    .metrics-wrap{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .metric-card{
      background:linear-gradient(180deg,#ffffff,#f7faff);
      border:1px solid rgba(217,228,245,.9);
      border-radius:26px;
      padding:26px 22px;
      box-shadow:var(--shadow-sm);
      min-height:178px;
      transition:var(--transition);
    }
    .metric-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-md);
    }
    .metric-card b{
      display:block;
      color:var(--primary-dark);
      font-size:clamp(30px,4vw,44px);
      line-height:1;
      letter-spacing:-.04em;
      margin-bottom:12px;
    }
    .metric-card strong{
      display:block;
      color:var(--ink);
      font-size:17px;
      margin-bottom:6px;
    }
    .metric-card span{
      color:var(--muted);
      font-size:14px;
      display:block;
    }

    .comparison{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:22px;
      align-items:stretch;
    }
    .compare-card{
      border-radius:var(--radius-lg);
      padding:30px;
      border:1px solid rgba(217,228,245,.9);
      box-shadow:var(--shadow-sm);
      background:#fff;
    }
    .compare-card.before{
      background:linear-gradient(180deg,#fff,#fff7f7);
      border-color:rgba(224,82,82,.15);
    }
    .compare-card.after{
      background:linear-gradient(180deg,#fff,#f3fbff);
      border-color:rgba(47,101,217,.18);
      box-shadow:var(--shadow-md);
    }
    .compare-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:18px;
    }
    .compare-head h3{
      color:var(--ink);
      margin:0;
      font-size:24px;
      font-weight:950;
    }
    .compare-badge{
      border-radius:999px;
      padding:7px 11px;
      font-size:13px;
      font-weight:900;
      background:rgba(224,82,82,.1);
      color:var(--danger);
    }
    .after .compare-badge{
      background:rgba(18,164,116,.1);
      color:var(--success);
    }
    .check-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:13px;
    }
    .check-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#43546e;
    }
    .check-list i{
      width:24px;height:24px;
      flex:0 0 24px;
      border-radius:50%;
      display:grid;
      place-items:center;
      font-style:normal;
      font-size:13px;
      font-weight:950;
      margin-top:2px;
    }
    .before .check-list i{background:rgba(224,82,82,.1);color:var(--danger)}
    .after .check-list i{background:rgba(18,164,116,.12);color:var(--success)}

    .news-layout{
      display:grid;
      grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);
      gap:24px;
      align-items:start;
    }
    .news-panel,.recommend-panel{
      background:#fff;
      border:1px solid rgba(217,228,245,.92);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-sm);
      overflow:hidden;
    }
    .news-list{
      list-style:none;
      padding:0;
      margin:0;
    }
    .news-item a{
      display:grid;
      grid-template-columns:112px 1fr auto;
      gap:18px;
      align-items:center;
      padding:20px 24px;
      border-bottom:1px solid rgba(217,228,245,.74);
      color:var(--text);
    }
    .news-item:last-child a{border-bottom:0}
    .news-item a:hover{
      background:rgba(47,101,217,.045);
      color:var(--primary-dark);
    }
    .news-date{
      color:var(--muted);
      font-size:14px;
      font-weight:750;
    }
    .news-title{
      color:var(--ink);
      font-weight:850;
      line-height:1.45;
    }
    .news-item a:hover .news-title{color:var(--primary-dark)}
    .news-arrow{
      width:34px;height:34px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:var(--primary-soft);
      color:var(--primary-dark);
      transition:var(--transition);
    }
    .news-item a:hover .news-arrow{
      transform:translateX(4px);
      background:var(--primary);
      color:#fff;
    }
    .recommend-panel{
      padding:24px;
      position:sticky;
      top:96px;
    }
    .recommend-panel h3{
      color:var(--ink);
      font-size:22px;
      font-weight:950;
      margin:0 0 14px;
    }
    .topic-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:20px;
    }
    .topic-tags a{
      padding:8px 11px;
      border-radius:999px;
      color:var(--primary-dark);
      background:var(--primary-soft);
      border:1px solid rgba(47,101,217,.12);
      font-size:13px;
      font-weight:800;
    }
    .topic-tags a:hover{
      background:var(--primary);
      color:#fff;
      transform:translateY(-2px);
    }
    .recommend-note{
      padding:18px;
      border-radius:22px;
      background:linear-gradient(135deg,#14213d,#2455bc);
      color:#fff;
    }
    .recommend-note strong{
      display:block;
      margin-bottom:8px;
      font-size:18px;
    }
    .recommend-note p{
      color:rgba(255,255,255,.76);
      margin:0;
      font-size:14px;
    }

    .updates-grid{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:24px;
      align-items:stretch;
    }
    .update-kpis{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
    }
    .update-kpi{
      background:#fff;
      border:1px solid rgba(217,228,245,.9);
      border-radius:24px;
      padding:22px;
      box-shadow:var(--shadow-sm);
    }
    .update-kpi b{
      color:var(--primary-dark);
      display:block;
      font-size:34px;
      line-height:1;
      margin-bottom:10px;
    }
    .update-kpi span{color:var(--muted);font-size:14px}
    .update-table{
      background:#fff;
      border:1px solid rgba(217,228,245,.9);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-md);
      overflow:hidden;
    }
    .update-row{
      display:grid;
      grid-template-columns:1fr 130px 110px;
      gap:16px;
      align-items:center;
      padding:18px 22px;
      border-bottom:1px solid rgba(217,228,245,.75);
    }
    .update-row:last-child{border-bottom:0}
    .update-row strong{color:var(--ink)}
    .update-row span{color:var(--muted);font-size:14px}
    .state{
      justify-self:start;
      border-radius:999px;
      padding:7px 10px;
      font-size:12px!important;
      font-weight:900;
      color:var(--success)!important;
      background:rgba(18,164,116,.1);
    }
    .state.wait{
      color:var(--accent)!important;
      background:rgba(255,181,71,.16);
    }

    .pricing-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .price-card{
      position:relative;
      background:#fff;
      border:1px solid rgba(217,228,245,.92);
      border-radius:var(--radius-lg);
      padding:28px;
      box-shadow:var(--shadow-sm);
      transition:var(--transition);
      overflow:hidden;
    }
    .price-card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow-md);
    }
    .price-card.recommended{
      border-color:rgba(47,101,217,.32);
      box-shadow:var(--shadow-lg);
      background:linear-gradient(180deg,#fff,#f4f8ff);
    }
    .recommend-ribbon{
      position:absolute;
      right:18px;
      top:18px;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      border-radius:999px;
      padding:7px 11px;
      font-size:12px;
      font-weight:950;
    }
    .price-card h3{
      color:var(--ink);
      font-size:24px;
      font-weight:950;
      margin:0 0 10px;
    }
    .price{
      color:var(--primary-dark);
      font-size:36px;
      font-weight:950;
      letter-spacing:-.04em;
      margin:12px 0;
    }
    .price small{
      color:var(--muted);
      font-size:14px;
      font-weight:700;
      letter-spacing:0;
    }
    .price-card p{
      color:var(--muted);
      margin:0 0 18px;
      min-height:52px;
    }
    .price-list{
      padding:0;
      margin:0 0 22px;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .price-list li{
      display:flex;
      gap:9px;
      color:#43546e;
      font-size:15px;
    }
    .price-list li::before{
      content:"✓";
      color:var(--success);
      font-weight:950;
    }

    .festival{
      background:linear-gradient(135deg,#173f9a 0%,#2f65d9 58%,#00a7c7 100%);
      color:#fff;
      border-radius:42px;
      padding:44px;
      box-shadow:var(--shadow-lg);
      overflow:hidden;
      position:relative;
    }
    .festival::before{
      content:"";
      position:absolute;
      width:340px;height:340px;
      border-radius:50%;
      background:rgba(255,255,255,.12);
      right:-130px;top:-110px;
    }
    .festival-grid{
      position:relative;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:28px;
      align-items:center;
    }
    .festival h2{
      font-size:clamp(30px,4vw,48px);
      line-height:1.16;
      font-weight:950;
      letter-spacing:-.04em;
      margin:12px 0;
    }
    .festival p{
      color:rgba(255,255,255,.78);
      margin:0;
      font-size:17px;
    }
    .gift-wall{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
    }
    .gift-card{
      padding:18px;
      border-radius:24px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.18);
      backdrop-filter:blur(10px);
      transition:var(--transition);
    }
    .gift-card:hover{
      transform:translateY(-4px);
      background:rgba(255,255,255,.18);
    }
    .gift-card strong{
      display:block;
      color:#fff;
      margin-bottom:6px;
      font-size:17px;
    }
    .gift-card span{
      color:rgba(255,255,255,.76);
      font-size:14px;
    }

    .faq-wrap{
      display:grid;
      grid-template-columns:.78fr 1.22fr;
      gap:26px;
      align-items:start;
    }
    .faq-aside{
      background:#fff;
      border:1px solid rgba(217,228,245,.9);
      border-radius:var(--radius-lg);
      padding:28px;
      box-shadow:var(--shadow-sm);
      position:sticky;
      top:96px;
    }
    .faq-aside h2{
      color:var(--ink);
      font-size:30px;
      font-weight:950;
      line-height:1.2;
      margin:14px 0 12px;
    }
    .faq-aside p{color:var(--muted);margin:0 0 18px}
    .accordion{
      display:grid;
      gap:14px;
    }
    .accordion-item{
      border:1px solid rgba(217,228,245,.92)!important;
      border-radius:22px!important;
      overflow:hidden;
      background:#fff;
      box-shadow:var(--shadow-sm);
    }
    .accordion-button{
      padding:20px 22px;
      color:var(--ink);
      font-weight:900;
      background:#fff;
      box-shadow:none!important;
      line-height:1.45;
    }
    .accordion-button:not(.collapsed){
      color:var(--primary-dark);
      background:linear-gradient(180deg,#fff,#f5f8ff);
    }
    .accordion-button:focus{
      border-color:transparent;
      box-shadow:0 0 0 .22rem rgba(47,101,217,.14)!important;
    }
    .accordion-body{
      padding:0 22px 22px;
      color:var(--muted);
      font-size:15px;
    }

    .contact-card{
      display:grid;
      grid-template-columns:.95fr 1.05fr;
      gap:28px;
      padding:34px;
      border-radius:42px;
      background:#fff;
      border:1px solid rgba(217,228,245,.92);
      box-shadow:var(--shadow-lg);
      position:relative;
      overflow:hidden;
    }
    .contact-card::before{
      content:"";
      position:absolute;
      inset:0 56% 0 0;
      background:linear-gradient(135deg,rgba(47,101,217,.12),rgba(0,167,199,.08));
      pointer-events:none;
    }
    .contact-copy,.contact-form{position:relative;z-index:1}
    .contact-copy h2{
      color:var(--ink);
      font-size:clamp(30px,4vw,46px);
      font-weight:950;
      line-height:1.15;
      letter-spacing:-.04em;
      margin:14px 0;
    }
    .contact-copy p{
      color:var(--muted);
      font-size:17px;
      margin:0 0 22px;
    }
    .contact-channels{
      display:grid;
      gap:12px;
    }
    .channel{
      display:flex;
      align-items:center;
      gap:12px;
      padding:14px;
      background:rgba(255,255,255,.72);
      border:1px solid rgba(217,228,245,.88);
      border-radius:18px;
    }
    .channel i{
      width:38px;height:38px;
      border-radius:14px;
      background:var(--primary-soft);
      color:var(--primary-dark);
      display:grid;
      place-items:center;
      font-style:normal;
      font-weight:950;
    }
    .channel strong{display:block;color:var(--ink)}
    .channel span{display:block;color:var(--muted);font-size:14px}
    .form-shell{
      background:linear-gradient(180deg,#f8fbff,#fff);
      border:1px solid rgba(217,228,245,.9);
      border-radius:30px;
      padding:24px;
    }
    .form-label{
      color:var(--ink);
      font-weight:850;
      margin-bottom:8px;
    }
    .form-control,.form-select{
      border:1px solid rgba(217,228,245,.95);
      border-radius:16px;
      padding:13px 14px;
      color:var(--ink);
      background:#fff;
      transition:var(--transition);
    }
    .form-control:focus,.form-select:focus{
      border-color:rgba(47,101,217,.55);
      box-shadow:0 0 0 .22rem rgba(47,101,217,.12);
    }
    textarea.form-control{min-height:112px;resize:vertical}
    .form-hint{
      color:var(--muted);
      font-size:13px;
      margin:10px 0 0;
    }

    .site-footer{
      background:#0f1b33;
      color:rgba(255,255,255,.76);
      padding:56px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:28px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.1);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-weight:950;
      margin-bottom:14px;
    }
    .footer-brand .brand-mark{
      box-shadow:none;
    }
    .footer-desc{
      max-width:520px;
      margin:0;
      color:rgba(255,255,255,.66);
    }
    .footer-col h3{
      color:#fff;
      font-size:17px;
      font-weight:900;
      margin:0 0 14px;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:rgba(255,255,255,.66);
    }
    .footer-links a:hover{
      color:#fff;
      padding-left:4px;
    }
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      align-items:center;
      padding-top:22px;
      color:rgba(255,255,255,.55);
      font-size:14px;
    }
    .footer-badges{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .footer-badges span{
      padding:6px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      color:rgba(255,255,255,.72);
    }

    .floating-cta{
      position:fixed;
      left:50%;
      bottom:18px;
      transform:translateX(-50%);
      z-index:1040;
      width:min(100% - 28px,720px);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:12px 14px 12px 18px;
      border:1px solid rgba(217,228,245,.9);
      border-radius:999px;
      background:rgba(255,255,255,.88);
      box-shadow:0 18px 50px rgba(20,33,61,.14);
      backdrop-filter:blur(16px);
    }
    .floating-cta span{
      color:var(--ink);
      font-weight:850;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }

    @media (max-width:1199px){
      .hero-grid{
        grid-template-columns:1fr 1.05fr;
      }
      .hero-side.right{
        grid-column:1 / -1;
        display:grid;
        grid-template-columns:1fr 1fr;
      }
      .metrics-wrap{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:991px){
      :root{--nav-height:70px}
      .navbar-collapse{
        margin-top:12px;
        padding:16px;
        border-radius:24px;
        background:rgba(255,255,255,.96);
        border:1px solid rgba(217,228,245,.9);
        box-shadow:var(--shadow-md);
      }
      .navbar-nav{align-items:stretch}
      .nav-search{min-width:0;width:100%;margin:10px 0}
      .nav-cta{width:100%}
      .hero{
        padding-top:112px;
        min-height:auto;
      }
      .hero-grid{
        grid-template-columns:1fr;
      }
      .hero-side.right{
        grid-column:auto;
        grid-template-columns:1fr;
      }
      .product-stage{order:2}
      .hero-side.left{order:1}
      .hero-side.right{order:3}
      .case-layout,.comparison,.news-layout,.updates-grid,.faq-wrap,.contact-card,.festival-grid{
        grid-template-columns:1fr;
      }
      .recommend-panel,.faq-aside{position:relative;top:auto}
      .pricing-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid > div:first-child{grid-column:1 / -1}
      .contact-card::before{inset:0 0 62% 0}
    }
    @media (max-width:767px){
      .container-custom{width:min(100% - 24px,var(--container))}
      .section{padding:64px 0}
      .section-tight{padding:48px 0}
      .section-head{
        display:block;
      }
      .section-title{font-size:32px}
      .hero-copy,.case-feature,.compare-card,.festival,.contact-card{
        padding:24px;
        border-radius:28px;
      }
      .hero h1{font-size:39px}
      .hero-mini-stats{grid-template-columns:1fr}
      .stage-list li{grid-template-columns:38px 1fr}
      .status-chip{grid-column:2}
      .metrics-wrap,.update-kpis,.gift-wall{
        grid-template-columns:1fr;
      }
      .news-item a{
        grid-template-columns:1fr auto;
        gap:10px;
      }
      .news-date{
        grid-column:1 / -1;
      }
      .update-row{
        grid-template-columns:1fr;
        gap:8px;
      }
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{
        flex-direction:column;
        align-items:flex-start;
      }
      .floating-cta{
        border-radius:24px;
        align-items:stretch;
        flex-direction:column;
      }
      .floating-cta .btn-modern{width:100%}
    }
    @media (max-width:520px){
      .brand-text{font-size:14px}
      .brand-mark{width:38px;height:38px;flex-basis:38px}
      .hero{padding-top:102px}
      .hero h1{font-size:34px}
      .hero-intro,.section-lead{font-size:16px}
      .hero-actions .btn-modern{width:100%}
      .browser-top{height:42px}
      .stage-body{padding:16px}
      .case-quote{font-size:20px}
      .metric-card{min-height:auto}
      .price-card,.form-shell{padding:22px}
      .festival{padding:24px}
      .footer-bottom{padding-bottom:82px}
    }

/* 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}