/* roulang page: index */
:root{
      --bg:#120913;
      --bg-2:#19101D;
      --bg-3:#211426;
      --card:#26172D;
      --card-2:#2A1831;
      --text:#FFF7FA;
      --muted:rgba(255,255,255,.72);
      --subtle:rgba(255,255,255,.54);
      --line:rgba(255,255,255,.11);
      --line-strong:rgba(255,61,141,.38);
      --primary:#FF3D8D;
      --primary-2:#FF6DA9;
      --secondary:#8B5CFF;
      --accent:#FF9A5A;
      --safe:#39D98A;
      --radius-xl:32px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-pill:999px;
      --shadow:0 24px 70px rgba(255,61,141,.16);
      --shadow-purple:0 22px 60px rgba(139,92,255,.14);
      --container:1220px;
      --ease:all .24s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 8% 8%,rgba(255,61,141,.20),transparent 28%),
        radial-gradient(circle at 86% 10%,rgba(139,92,255,.20),transparent 30%),
        linear-gradient(180deg,#120913 0%,#19101D 45%,#120913 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.86),transparent 86%);
      z-index:-2;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover,a:focus{color:var(--text)}
    img{max-width:100%;height:auto;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(255,61,141,.36);color:#fff}
    .grid-container{
      max-width:var(--container);
      padding-left:22px;
      padding-right:22px;
    }
    .section{
      padding:96px 0;
      position:relative;
    }
    .section.tight{padding-top:72px}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 14px;
      border:1px solid var(--line);
      border-radius:var(--radius-pill);
      color:rgba(255,255,255,.82);
      background:rgba(255,255,255,.07);
      font-size:14px;
      line-height:1.2;
    }
    .eyebrow:before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 16px rgba(255,61,141,.8);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      font-size:clamp(34px,5vw,56px);
      line-height:1.14;
      letter-spacing:-.04em;
      font-weight:850;
      margin-bottom:22px;
    }
    h2{
      font-size:clamp(28px,3.8vw,38px);
      line-height:1.22;
      letter-spacing:-.03em;
      font-weight:800;
      margin-bottom:14px;
    }
    h3{
      font-size:21px;
      line-height:1.35;
      font-weight:760;
      margin-bottom:10px;
    }
    p{
      color:var(--muted);
      font-size:16.5px;
      margin-bottom:16px;
    }
    .lead{
      font-size:18px;
      color:rgba(255,255,255,.78);
      max-width:680px;
    }
    .section-head{
      max-width:760px;
      margin-bottom:34px;
    }
    .section-head.center{
      text-align:center;
      margin-left:auto;
      margin-right:auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(18,9,19,.88);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .site-header:after{
      content:"";
      position:absolute;
      left:0;right:0;bottom:-1px;height:1px;
      background:linear-gradient(90deg,transparent,var(--primary),var(--secondary),transparent);
      opacity:.68;
    }
    .nav-shell{
      min-height:78px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      width:42px;height:42px;
      border-radius:16px;
      position:relative;
      background:
        radial-gradient(circle at 32% 28%,rgba(255,255,255,.9),transparent 8%),
        linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 12px 30px rgba(255,61,141,.30);
      flex:0 0 auto;
      overflow:hidden;
    }
    .brand-mark:before{
      content:"";
      position:absolute;
      width:18px;height:18px;
      border:2px solid rgba(255,255,255,.72);
      border-left-color:transparent;
      border-bottom-color:transparent;
      transform:rotate(45deg);
      top:12px;left:10px;
      border-radius:4px;
    }
    .brand-mark:after{
      content:"";
      position:absolute;
      left:7px;right:7px;bottom:8px;height:2px;
      background:rgba(255,255,255,.72);
      box-shadow:8px -8px 0 rgba(255,255,255,.28),18px -2px 0 rgba(255,255,255,.36);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.22;
      min-width:0;
    }
    .brand-text strong{
      font-size:16px;
      letter-spacing:-.02em;
      color:#fff;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:360px;
    }
    .brand-text span{
      font-size:12px;
      color:var(--subtle);
    }
    .desktop-nav{
      display:flex;
      align-items:center;
      gap:8px;
      margin-left:auto;
    }
    .nav-link{
      position:relative;
      padding:12px 14px;
      color:rgba(255,255,255,.72);
      font-size:15px;
      border-radius:14px;
    }
    .nav-link:hover{
      color:#fff;
      background:rgba(255,255,255,.06);
    }
    .nav-link.active{
      color:#fff;
      text-shadow:0 0 18px rgba(255,61,141,.38);
    }
    .nav-link.active:after{
      content:"";
      position:absolute;
      left:14px;right:14px;bottom:6px;height:2px;
      border-radius:4px;
      background:linear-gradient(90deg,var(--primary),var(--secondary));
      box-shadow:0 0 14px rgba(255,61,141,.65);
    }
    .nav-cta{
      margin-left:8px;
      padding:12px 18px;
      border-radius:var(--radius-pill);
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 12px 28px rgba(255,61,141,.22);
      font-weight:700;
      font-size:14px;
    }
    .nav-cta:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(255,61,141,.34);color:#fff}
    .menu-toggle{
      display:none;
      width:46px;height:42px;
      align-items:center;
      justify-content:center;
      border:1px solid rgba(255,61,141,.38);
      border-radius:14px;
      background:rgba(255,255,255,.04);
      color:#fff;
    }
    .menu-toggle span,.menu-toggle span:before,.menu-toggle span:after{
      content:"";
      display:block;
      width:20px;height:2px;
      background:#fff;
      border-radius:2px;
      position:relative;
      transition:var(--ease);
    }
    .menu-toggle span:before{position:absolute;top:-7px}
    .menu-toggle span:after{position:absolute;top:7px}
    .mobile-panel{
      display:none;
      padding:0 22px 18px;
      border-top:1px solid rgba(255,255,255,.07);
    }
    .mobile-panel.open{display:block}
    .mobile-panel a{
      display:block;
      padding:14px 10px;
      color:rgba(255,255,255,.78);
      border-bottom:1px solid rgba(255,255,255,.07);
    }
    .mobile-panel a.active{color:#fff}

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:13px 22px;
      border-radius:var(--radius-pill);
      border:1px solid transparent;
      font-weight:760;
      line-height:1.2;
      transition:var(--ease);
      user-select:none;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 16px 36px rgba(255,61,141,.24);
    }
    .btn-primary:hover,.btn-primary:focus{
      color:#fff;
      transform:translateY(-3px);
      box-shadow:0 22px 48px rgba(255,61,141,.34);
    }
    .btn-secondary{
      color:#fff;
      background:rgba(255,255,255,.045);
      border-color:rgba(255,255,255,.16);
    }
    .btn-secondary:hover,.btn-secondary:focus{
      color:#fff;
      background:rgba(255,61,141,.12);
      border-color:rgba(255,61,141,.42);
      transform:translateY(-2px);
    }
    .btn:focus-visible,.nav-link:focus-visible,.nav-cta:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{
      outline:3px solid rgba(255,61,141,.35);
      outline-offset:3px;
    }
    .btn:active{transform:translateY(0) scale(.98)}

    .hero{
      min-height:680px;
      display:flex;
      align-items:center;
      padding:78px 0 92px;
      position:relative;
      overflow:hidden;
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 20% 40%,rgba(255,61,141,.18),transparent 32%),
        radial-gradient(circle at 72% 35%,rgba(139,92,255,.18),transparent 34%),
        radial-gradient(circle at 50% 92%,rgba(255,154,90,.08),transparent 24%);
      z-index:-1;
    }
    .hero-copy{padding-top:20px}
    .hero-title .gradient{
      background:linear-gradient(90deg,#fff,var(--primary-2),#D6C7FF);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .cta-row{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin:30px 0 24px;
    }
    .badge-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:24px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:var(--radius-pill);
      border:1px solid var(--line);
      background:rgba(255,255,255,.07);
      color:rgba(255,255,255,.76);
      font-size:13.5px;
      line-height:1.2;
    }
    .badge i{
      width:8px;height:8px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 14px rgba(255,154,90,.75);
      display:inline-block;
      flex:0 0 auto;
    }
    .badge.safe i{background:var(--safe);box-shadow:0 0 14px rgba(57,217,138,.70)}
    .badge.pink i{background:var(--primary)}
    .badge.purple i{background:var(--secondary)}

    .dashboard-card{
      position:relative;
      padding:26px;
      border-radius:var(--radius-xl);
      border:1px solid rgba(255,255,255,.13);
      background:
        linear-gradient(180deg,rgba(255,255,255,.085),rgba(255,255,255,.035)),
        linear-gradient(135deg,rgba(42,24,49,.92),rgba(25,16,29,.94));
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .dashboard-card:before{
      content:"";
      position:absolute;
      left:0;right:0;top:0;height:3px;
      background:linear-gradient(90deg,var(--primary),var(--secondary),var(--accent));
    }
    .dashboard-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:20px;
      margin-bottom:24px;
    }
    .dashboard-top h2{
      font-size:24px;
      margin:0 0 4px;
    }
    .pulse{
      width:54px;height:54px;
      border-radius:20px;
      background:rgba(255,61,141,.13);
      border:1px solid rgba(255,61,141,.28);
      display:grid;
      place-items:center;
      position:relative;
    }
    .pulse:after{
      content:"";
      width:18px;height:18px;
      clip-path:polygon(0 0,100% 50%,0 100%);
      background:#fff;
      margin-left:3px;
      filter:drop-shadow(0 0 10px rgba(255,61,141,.8));
    }
    .metric-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:14px;
    }
    .metric-card{
      padding:18px;
      border:1px solid var(--line);
      border-radius:22px;
      background:rgba(255,255,255,.055);
      transition:var(--ease);
    }
    .metric-card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,61,141,.32);
      box-shadow:0 18px 42px rgba(255,61,141,.10);
    }
    .metric-num{
      display:block;
      font-size:34px;
      line-height:1;
      font-weight:860;
      letter-spacing:-.04em;
      color:#fff;
      margin-bottom:8px;
    }
    .metric-label{
      display:block;
      color:rgba(255,255,255,.78);
      font-weight:700;
      font-size:14px;
    }
    .metric-note{
      display:block;
      color:var(--subtle);
      font-size:13px;
      margin-top:4px;
    }
    .mini-bars{
      margin-top:22px;
      display:grid;
      gap:11px;
    }
    .bar-line{
      display:grid;
      grid-template-columns:96px 1fr 42px;
      align-items:center;
      gap:10px;
      font-size:13px;
      color:rgba(255,255,255,.62);
    }
    .bar-track{
      height:8px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      overflow:hidden;
    }
    .bar-fill{
      height:100%;
      border-radius:inherit;
      background:linear-gradient(90deg,var(--primary),var(--secondary));
      box-shadow:0 0 16px rgba(255,61,141,.45);
    }

    .board-wrap{
      padding:22px;
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      background:linear-gradient(135deg,rgba(255,255,255,.065),rgba(255,255,255,.025));
      box-shadow:var(--shadow-purple);
    }
    .stat-card{
      min-height:190px;
      padding:24px;
      border-radius:24px;
      border:1px solid var(--line);
      background:rgba(33,20,38,.78);
      transition:var(--ease);
      position:relative;
      overflow:hidden;
    }
    .stat-card:after{
      content:"";
      position:absolute;
      right:-32px;top:-32px;
      width:110px;height:110px;
      border-radius:50%;
      background:rgba(255,61,141,.10);
    }
    .stat-card:hover{
      transform:translateY(-5px);
      border-color:rgba(255,61,141,.32);
      box-shadow:0 20px 48px rgba(0,0,0,.25);
    }
    .stat-value{
      font-size:42px;
      line-height:1;
      letter-spacing:-.05em;
      font-weight:880;
      color:#fff;
      margin-bottom:12px;
    }
    .stat-name{
      font-size:18px;
      font-weight:780;
      margin-bottom:8px;
    }
    .stat-card p{
      font-size:14.5px;
      margin:0;
      color:rgba(255,255,255,.62);
    }

    .matrix{
      display:grid;
      grid-template-columns:1.22fr .78fr;
      gap:20px;
    }
    .matrix-main,.feature-card,.compare-card,.preview-card,.faq-card,.form-card{
      border:1px solid var(--line);
      background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.035));
      border-radius:var(--radius-lg);
      transition:var(--ease);
      position:relative;
      overflow:hidden;
    }
    .matrix-main{
      padding:32px;
      min-height:430px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      box-shadow:var(--shadow);
    }
    .matrix-main:before,.feature-card:before{
      content:"";
      position:absolute;
      left:0;right:0;top:0;height:3px;
      background:linear-gradient(90deg,var(--primary),var(--secondary));
      opacity:.86;
    }
    .matrix-visual{
      margin-top:24px;
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
    }
    .visual-node{
      padding:16px 12px;
      border-radius:18px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.09);
      text-align:center;
    }
    .visual-node strong{
      display:block;
      font-size:20px;
      color:#fff;
    }
    .visual-node span{font-size:12px;color:var(--subtle)}
    .feature-list{
      display:grid;
      grid-template-columns:1fr;
      gap:14px;
    }
    .feature-card{
      padding:20px;
    }
    .feature-card:hover,.preview-card:hover,.compare-card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,61,141,.32);
      box-shadow:0 20px 48px rgba(255,61,141,.10);
    }
    .feature-card p{font-size:14.5px;margin-bottom:0}
    .tag{
      display:inline-flex;
      align-items:center;
      padding:6px 10px;
      border-radius:999px;
      font-size:12.5px;
      font-weight:700;
      color:#fff;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,61,141,.13);
      margin-bottom:12px;
    }
    .tag.orange{background:rgba(255,154,90,.15)}
    .tag.purple{background:rgba(139,92,255,.16)}
    .tag.safe{background:rgba(57,217,138,.12)}

    .compare-grid{
      align-items:stretch;
    }
    .compare-card{
      padding:28px;
      height:100%;
    }
    .compare-card.dim{
      background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.02));
    }
    .compare-card.highlight{
      border-color:rgba(255,61,141,.35);
      background:
        radial-gradient(circle at 88% 10%,rgba(255,61,141,.18),transparent 32%),
        linear-gradient(135deg,rgba(255,61,141,.13),rgba(139,92,255,.08));
      box-shadow:var(--shadow);
    }
    .check-list{
      list-style:none;
      padding:0;
      margin:20px 0 0;
      display:grid;
      gap:13px;
    }
    .check-list li{
      display:flex;
      gap:10px;
      color:rgba(255,255,255,.72);
      font-size:15px;
    }
    .check-list li:before{
      content:"";
      width:18px;height:18px;
      margin-top:4px;
      border-radius:50%;
      flex:0 0 auto;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.13);
    }
    .compare-card.highlight .check-list li:before{
      background:var(--safe);
      border-color:rgba(57,217,138,.6);
      box-shadow:0 0 14px rgba(57,217,138,.35);
    }
    .progress-route{
      margin-top:28px;
      padding:18px;
      border:1px solid var(--line);
      border-radius:22px;
      background:rgba(255,255,255,.04);
    }
    .route-labels{
      display:flex;
      justify-content:space-between;
      gap:12px;
      color:rgba(255,255,255,.66);
      font-size:13.5px;
      margin-bottom:10px;
    }

    .preview-strip{
      display:grid;
      grid-template-columns:1.2fr repeat(2,.9fr);
      gap:18px;
    }
    .preview-card{
      padding:24px;
      min-height:250px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .preview-card.large{
      min-height:310px;
      background:
        radial-gradient(circle at 84% 20%,rgba(255,154,90,.16),transparent 34%),
        linear-gradient(135deg,rgba(255,61,141,.12),rgba(139,92,255,.08));
    }
    .abstract-cover{
      height:90px;
      border-radius:20px;
      margin-bottom:18px;
      background:
        radial-gradient(circle at 28% 35%,rgba(255,255,255,.34),transparent 9%),
        radial-gradient(circle at 66% 28%,rgba(255,61,141,.50),transparent 16%),
        linear-gradient(135deg,rgba(255,61,141,.55),rgba(139,92,255,.36),rgba(255,154,90,.24));
      border:1px solid rgba(255,255,255,.12);
      position:relative;
      overflow:hidden;
    }
    .abstract-cover:after{
      content:"";
      position:absolute;
      inset:18px;
      border:1px solid rgba(255,255,255,.18);
      border-radius:16px;
      transform:skewX(-10deg);
    }
    .preview-card p{font-size:14.5px}
    .card-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#fff;
      font-weight:780;
      margin-top:auto;
    }
    .card-link:hover{color:var(--primary-2);gap:12px}

    .faq-wrap .accordion{
      margin:0;
      background:transparent;
    }
    .faq-wrap .accordion-item{
      margin-bottom:14px;
      border:1px solid var(--line);
      border-radius:20px;
      overflow:hidden;
      background:rgba(255,255,255,.045);
      transition:var(--ease);
    }
    .faq-wrap .accordion-item.is-active{
      border-color:rgba(255,61,141,.38);
      box-shadow:0 18px 42px rgba(255,61,141,.10);
    }
    .faq-wrap .accordion-title{
      min-height:62px;
      display:flex;
      align-items:center;
      padding:20px 58px 20px 22px;
      color:#fff;
      font-size:16px;
      font-weight:760;
      border:0;
      background:transparent;
    }
    .faq-wrap .accordion-title:hover,.faq-wrap .accordion-title:focus{
      background:rgba(255,61,141,.08);
      color:#fff;
    }
    .faq-wrap .accordion-title:before{
      color:var(--primary);
      font-size:22px;
      right:22px;
      margin-top:-12px;
    }
    .faq-wrap .accordion-content{
      border:0;
      background:rgba(18,9,19,.24);
      color:rgba(255,255,255,.70);
      padding:0 22px 22px;
      line-height:1.85;
    }

    .cta-section{padding:70px 0 108px}
    .form-card{
      padding:34px;
      background:
        radial-gradient(circle at 16% 18%,rgba(255,61,141,.20),transparent 34%),
        radial-gradient(circle at 88% 20%,rgba(139,92,255,.18),transparent 32%),
        linear-gradient(135deg,rgba(255,255,255,.085),rgba(255,255,255,.03));
      box-shadow:var(--shadow);
    }
    .form-card label{
      color:rgba(255,255,255,.82);
      font-weight:700;
      font-size:14px;
      margin-bottom:8px;
    }
    .form-card input,.form-card select,.form-card textarea{
      height:52px;
      border-radius:16px;
      border:1px solid rgba(255,255,255,.13);
      background:rgba(18,9,19,.50);
      color:#fff;
      box-shadow:none;
      margin-bottom:16px;
      transition:var(--ease);
    }
    .form-card textarea{min-height:118px;padding-top:14px;resize:vertical}
    .form-card input::placeholder,.form-card textarea::placeholder{color:rgba(255,255,255,.36)}
    .form-card input:focus,.form-card select:focus,.form-card textarea:focus{
      background:rgba(18,9,19,.62);
      border-color:rgba(255,61,141,.64);
      box-shadow:0 0 0 4px rgba(255,61,141,.16);
      color:#fff;
    }
    .form-note{
      margin-top:14px;
      color:rgba(255,255,255,.58);
      font-size:13px;
    }

    .site-footer{
      position:relative;
      background:#0D070F;
      border-top:1px solid rgba(255,255,255,.08);
      padding:54px 0 24px;
    }
    .site-footer:before{
      content:"";
      position:absolute;
      left:0;right:0;top:0;height:1px;
      background:linear-gradient(90deg,transparent,var(--primary),var(--secondary),transparent);
    }
    .footer-title{
      font-weight:820;
      color:#fff;
      margin-bottom:12px;
    }
    .footer-text,.footer-link,.copyright{
      color:rgba(255,255,255,.62);
      font-size:14px;
    }
    .footer-link{
      display:block;
      padding:5px 0;
    }
    .footer-link:hover{color:#fff;transform:translateX(3px)}
    .compliance{
      padding:16px;
      border-radius:18px;
      border:1px solid rgba(255,154,90,.22);
      background:rgba(255,154,90,.08);
      color:rgba(255,255,255,.70);
      font-size:14px;
    }
    .footer-bottom{
      margin-top:34px;
      padding-top:20px;
      border-top:1px solid rgba(255,255,255,.08);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }

    @media (max-width:1024px){
      .desktop-nav,.nav-cta{display:none}
      .menu-toggle{display:flex}
      .brand-text strong{max-width:280px}
      .metric-grid{grid-template-columns:repeat(2,1fr)}
      .matrix{grid-template-columns:1fr}
      .feature-list{grid-template-columns:repeat(2,1fr)}
      .preview-strip{grid-template-columns:1fr 1fr}
      .preview-card.large{grid-column:1 / -1}
      .section{padding:78px 0}
    }
    @media (max-width:768px){
      .hero{min-height:auto;padding:54px 0 72px}
      .dashboard-card{margin-top:26px}
      .board-wrap{padding:16px}
      .stat-card{min-height:160px}
      .matrix-visual{grid-template-columns:1fr}
      .feature-list{grid-template-columns:1fr}
      .preview-strip{grid-template-columns:1fr}
      .compare-card{margin-bottom:18px}
      .form-card{padding:24px}
      .brand-text span{display:none}
    }
    @media (max-width:640px){
      .grid-container{padding-left:16px;padding-right:16px}
      .nav-shell{min-height:70px}
      .brand-mark{width:38px;height:38px;border-radius:14px}
      .brand-text strong{max-width:210px;font-size:14px}
      h1{font-size:34px}
      .lead{font-size:16px}
      .cta-row{flex-direction:column}
      .btn{width:100%;min-height:52px}
      .badge-row{gap:8px}
      .metric-grid{grid-template-columns:1fr}
      .bar-line{grid-template-columns:82px 1fr 38px}
      .stat-value{font-size:36px}
      .route-labels{font-size:12px}
      .footer-bottom{align-items:flex-start;flex-direction:column}
      .section{padding:62px 0}
      .cta-section{padding:54px 0 78px}
    }

/* roulang page: category1 */
:root{
      --bg:#120913;
      --bg-2:#19101d;
      --panel:#211426;
      --panel-2:#2a1831;
      --panel-3:#301b38;
      --text:#fff7fb;
      --muted:rgba(255,255,255,.74);
      --soft:rgba(255,255,255,.56);
      --line:rgba(255,255,255,.11);
      --line-strong:rgba(255,61,141,.38);
      --primary:#ff3d8d;
      --secondary:#8b5cff;
      --accent:#ff9a5a;
      --safe:#39d98a;
      --radius-xl:32px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-pill:999px;
      --shadow:0 22px 60px rgba(255,61,141,.14);
      --shadow-purple:0 18px 54px rgba(139,92,255,.18);
      --max:1220px;
      --ease:all .24s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 4%, rgba(255,61,141,.20), transparent 34%),
        radial-gradient(circle at 88% 12%, rgba(139,92,255,.20), transparent 32%),
        linear-gradient(180deg, #120913 0%, #19101d 48%, #120913 100%);
      line-height:1.8;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{max-width:100%;height:auto;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .grid-container{max-width:var(--max)}
    .section{padding:92px 0;position:relative}
    .section-tight{padding:68px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#ffd2e5;
      font-size:14px;
      font-weight:700;
      letter-spacing:.02em;
      padding:7px 12px;
      border:1px solid var(--line);
      border-radius:var(--radius-pill);
      background:rgba(255,255,255,.06);
      margin-bottom:16px;
    }
    .eyebrow::before,.badge-dot::before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 0 18px rgba(255,61,141,.75);
      flex:0 0 auto;
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      font-size:clamp(34px,5vw,54px);
      line-height:1.14;
      font-weight:850;
      letter-spacing:-.04em;
      margin-bottom:18px;
    }
    h2{
      font-size:clamp(28px,3.2vw,38px);
      line-height:1.22;
      font-weight:820;
      letter-spacing:-.03em;
      margin-bottom:16px;
    }
    h3{font-size:21px;line-height:1.35;font-weight:760;margin-bottom:10px}
    p{color:var(--muted);font-size:16px}
    .lead{font-size:18px;color:rgba(255,255,255,.78);max-width:760px}
    .muted{color:var(--soft)}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(18,9,19,.90);
      backdrop-filter:blur(16px);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .site-header::after{
      content:"";
      display:block;
      height:1px;
      background:linear-gradient(90deg,transparent,var(--primary),var(--secondary),transparent);
      opacity:.75;
    }
    .nav-shell{
      min-height:78px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:15px;
      position:relative;
      background:
        radial-gradient(circle at 70% 25%, rgba(255,255,255,.85), transparent 8%),
        linear-gradient(135deg,var(--primary),var(--secondary) 62%,var(--accent));
      box-shadow:0 0 28px rgba(255,61,141,.34);
      flex:0 0 auto;
    }
    .brand-mark::before{
      content:"";
      position:absolute;
      left:15px;top:11px;
      width:0;height:0;
      border-top:9px solid transparent;
      border-bottom:9px solid transparent;
      border-left:14px solid rgba(255,255,255,.92);
      filter:drop-shadow(0 0 8px rgba(255,255,255,.45));
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:7px;
      border:1px solid rgba(255,255,255,.36);
      border-radius:12px;
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
    .brand-text strong{
      font-size:17px;
      white-space:nowrap;
      letter-spacing:-.02em;
    }
    .brand-text span{
      font-size:12px;
      color:rgba(255,255,255,.58);
      white-space:nowrap;
    }
    .desktop-nav{
      display:flex;
      align-items:center;
      gap:8px;
      margin-left:auto;
    }
    .nav-link{
      position:relative;
      padding:12px 15px;
      color:rgba(255,255,255,.70);
      font-size:15px;
      font-weight:650;
      border-radius:var(--radius-pill);
    }
    .nav-link:hover,.nav-link:focus-visible{
      color:#fff;
      background:rgba(255,255,255,.06);
      outline:none;
    }
    .nav-link.active{
      color:#fff;
      text-shadow:0 0 16px rgba(255,61,141,.45);
      background:rgba(255,61,141,.10);
    }
    .nav-link.active::after{
      content:"";
      position:absolute;
      left:18px;right:18px;bottom:5px;
      height:2px;border-radius:4px;
      background:linear-gradient(90deg,var(--primary),var(--secondary));
      box-shadow:0 0 12px rgba(255,61,141,.65);
    }
    .nav-cta,.btn-primary{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:0 20px;
      border-radius:var(--radius-pill);
      border:0;
      color:white;
      font-weight:760;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 16px 32px rgba(255,61,141,.22);
      transition:var(--ease);
    }
    .nav-cta:hover,.btn-primary:hover,
    .nav-cta:focus-visible,.btn-primary:focus-visible{
      transform:translateY(-2px);
      box-shadow:0 20px 46px rgba(255,61,141,.34);
      color:white;
      outline:none;
    }
    .nav-cta:active,.btn-primary:active{transform:translateY(0) scale(.98)}
    .btn-secondary{
      display:inline-flex;align-items:center;justify-content:center;
      min-height:46px;padding:0 20px;border-radius:var(--radius-pill);
      border:1px solid rgba(255,61,141,.42);
      color:#ffd7e8;font-weight:720;
      background:rgba(255,255,255,.04);
    }
    .btn-secondary:hover,.btn-secondary:focus-visible{
      background:rgba(255,61,141,.12);
      border-color:rgba(255,61,141,.75);
      color:white;
      transform:translateY(-2px);
      outline:none;
    }
    .menu-toggle{
      display:none;
      width:46px;height:42px;
      border-radius:15px;
      border:1px solid rgba(255,61,141,.38);
      background:rgba(255,255,255,.05);
      position:relative;
    }
    .menu-toggle span,.menu-toggle::before,.menu-toggle::after{
      content:"";
      position:absolute;
      left:12px;right:12px;
      height:2px;border-radius:3px;
      background:#fff;
      transition:var(--ease);
    }
    .menu-toggle span{top:20px}
    .menu-toggle::before{top:13px}
    .menu-toggle::after{top:27px}
    .menu-toggle.is-open span{opacity:0}
    .menu-toggle.is-open::before{top:20px;transform:rotate(45deg)}
    .menu-toggle.is-open::after{top:20px;transform:rotate(-45deg)}
    .mobile-panel{
      display:none;
      padding:0 0 18px;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .mobile-panel a{
      display:block;
      padding:13px 8px;
      color:rgba(255,255,255,.75);
      font-weight:700;
      border-radius:14px;
    }
    .mobile-panel a:hover,.mobile-panel a.active{
      color:white;
      background:rgba(255,61,141,.10);
    }
    .intro{
      padding:64px 0 42px;
      position:relative;
      overflow:hidden;
    }
    .intro::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
      background-size:44px 44px;
      mask-image:linear-gradient(180deg,#000,transparent 88%);
      pointer-events:none;
    }
    .breadcrumb{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:22px;
      color:rgba(255,255,255,.58);
      font-size:14px;
      position:relative;
      z-index:1;
    }
    .breadcrumb a{color:#ffd4e6}
    .breadcrumb a:hover{color:white}
    .summary-board{
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 80% 0%, rgba(255,61,141,.16), transparent 38%),
        linear-gradient(145deg,rgba(42,24,49,.94),rgba(33,20,38,.88));
      box-shadow:var(--shadow);
      padding:24px;
      position:relative;
      overflow:hidden;
    }
    .summary-board::after{
      content:"";
      position:absolute;
      left:0;right:0;top:0;height:3px;
      background:linear-gradient(90deg,var(--primary),var(--secondary),var(--accent));
    }
    .summary-item{
      display:flex;
      align-items:flex-start;
      gap:13px;
      padding:17px;
      border-radius:20px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.09);
      margin-bottom:12px;
    }
    .summary-item:last-child{margin-bottom:0}
    .summary-icon{
      width:38px;height:38px;border-radius:14px;
      background:linear-gradient(135deg,rgba(255,61,141,.95),rgba(139,92,255,.95));
      display:grid;place-items:center;
      font-weight:900;
      box-shadow:0 12px 24px rgba(139,92,255,.22);
      flex:0 0 auto;
    }
    .summary-item strong{display:block;font-size:16px;margin-bottom:2px}
    .summary-item span{display:block;color:var(--soft);font-size:13px;line-height:1.55}
    .filter-shell{
      border:1px solid var(--line);
      background:rgba(255,255,255,.045);
      border-radius:26px;
      padding:14px;
      box-shadow:0 12px 34px rgba(0,0,0,.16);
    }
    .filter-tabs{
      display:flex;
      gap:10px;
      overflow:auto;
      padding:2px;
      scrollbar-width:none;
    }
    .filter-tabs::-webkit-scrollbar{display:none}
    .filter-tab{
      flex:0 0 auto;
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:42px;
      padding:0 16px;
      border-radius:var(--radius-pill);
      border:1px solid rgba(255,255,255,.12);
      color:rgba(255,255,255,.76);
      background:rgba(18,9,19,.35);
      font-weight:700;
      font-size:14px;
    }
    .filter-tab:hover,.filter-tab:focus-visible{
      color:white;
      border-color:rgba(255,61,141,.48);
      background:rgba(255,61,141,.10);
      outline:none;
    }
    .filter-tab.active{
      color:white;
      border-color:transparent;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 12px 28px rgba(255,61,141,.22);
    }
    .feature-card,.list-card,.step-card,.content-panel,.toc-card,.cta-card{
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:
        radial-gradient(circle at 88% 8%, rgba(255,61,141,.10), transparent 35%),
        linear-gradient(145deg,rgba(42,24,49,.88),rgba(33,20,38,.92));
      transition:var(--ease);
      position:relative;
      overflow:hidden;
    }
    .feature-card:hover,.list-card:hover,.step-card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,61,141,.32);
      box-shadow:var(--shadow);
    }
    .feature-card{
      min-height:100%;
      padding:28px;
    }
    .cover-abstract{
      height:178px;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.10);
      background:
        radial-gradient(circle at 24% 28%, rgba(255,154,90,.88), transparent 15%),
        radial-gradient(circle at 72% 36%, rgba(255,61,141,.78), transparent 19%),
        radial-gradient(circle at 56% 78%, rgba(139,92,255,.78), transparent 22%),
        linear-gradient(135deg,#2d1733,#160b18);
      margin-bottom:24px;
      position:relative;
      overflow:hidden;
    }
    .cover-abstract::before{
      content:"";
      position:absolute;
      inset:22px;
      border:1px solid rgba(255,255,255,.22);
      border-radius:22px;
      transform:skewX(-8deg);
    }
    .cover-abstract::after{
      content:"▶";
      position:absolute;
      right:26px;bottom:18px;
      width:56px;height:56px;border-radius:50%;
      display:grid;place-items:center;
      color:white;
      background:rgba(255,255,255,.13);
      border:1px solid rgba(255,255,255,.18);
      backdrop-filter:blur(8px);
      box-shadow:0 12px 28px rgba(0,0,0,.18);
    }
    .badge-row{display:flex;flex-wrap:wrap;gap:9px;margin:14px 0 18px}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 11px;
      border-radius:var(--radius-pill);
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.065);
      color:#ffe6f0;
      font-size:13px;
      font-weight:700;
      line-height:1.2;
    }
    .badge.safe{color:#d6ffe9;border-color:rgba(57,217,138,.28)}
    .badge.orange{color:#ffe2cc;border-color:rgba(255,154,90,.30)}
    .progress-line{
      height:10px;
      border-radius:20px;
      background:rgba(255,255,255,.08);
      overflow:hidden;
      margin:18px 0 20px;
    }
    .progress-line span{
      display:block;
      height:100%;
      width:82%;
      border-radius:20px;
      background:linear-gradient(90deg,var(--primary),var(--secondary),var(--accent));
      box-shadow:0 0 18px rgba(255,61,141,.45);
    }
    .list-stack{display:flex;flex-direction:column;gap:16px}
    .list-card{
      padding:20px;
      display:grid;
      grid-template-columns:1fr auto;
      gap:14px;
      align-items:center;
    }
    .list-card h3{font-size:18px;margin-bottom:6px}
    .list-card p{font-size:14px;line-height:1.65;margin-bottom:12px}
    .mini-cover{
      width:92px;height:92px;border-radius:22px;
      border:1px solid rgba(255,255,255,.11);
      background:
        linear-gradient(135deg,rgba(255,61,141,.45),rgba(139,92,255,.42)),
        repeating-linear-gradient(45deg,rgba(255,255,255,.12) 0 2px,transparent 2px 9px);
      display:grid;place-items:center;
      color:white;
      font-size:24px;
      font-weight:900;
    }
    .small-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:#ffd2e5;
      font-weight:760;
      font-size:14px;
    }
    .small-link:hover{color:white;gap:10px}
    .timeline{
      position:relative;
      display:grid;
      gap:18px;
    }
    .timeline::before{
      content:"";
      position:absolute;
      left:26px;
      top:22px;
      bottom:22px;
      width:2px;
      background:linear-gradient(180deg,var(--primary),var(--secondary),transparent);
      opacity:.75;
    }
    .step-card{
      padding:22px 22px 22px 76px;
      min-height:116px;
    }
    .step-num{
      position:absolute;
      left:18px;top:22px;
      width:38px;height:38px;border-radius:14px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      font-weight:900;
      box-shadow:0 0 20px rgba(255,61,141,.34);
    }
    .reading-wrap{align-items:flex-start}
    .content-panel{padding:34px}
    .content-panel h2{font-size:30px;margin-top:10px}
    .content-panel h3{margin-top:26px;color:#fff}
    .content-panel p{margin-bottom:14px}
    .highlight-box{
      margin:24px 0;
      padding:18px 20px;
      border-radius:20px;
      border:1px solid rgba(255,154,90,.28);
      background:rgba(255,154,90,.08);
      color:#ffe9dc;
    }
    .check-list{
      list-style:none;
      padding:0;
      margin:16px 0 0;
      display:grid;
      gap:10px;
    }
    .check-list li{
      position:relative;
      padding-left:28px;
      color:rgba(255,255,255,.76);
    }
    .check-list li::before{
      content:"";
      position:absolute;
      left:0;top:10px;
      width:10px;height:10px;border-radius:50%;
      background:var(--safe);
      box-shadow:0 0 14px rgba(57,217,138,.55);
    }
    .toc-card{
      padding:22px;
      position:sticky;
      top:106px;
    }
    .toc-card h3{font-size:18px}
    .toc-link{
      display:block;
      padding:10px 0;
      color:rgba(255,255,255,.68);
      border-bottom:1px solid rgba(255,255,255,.07);
      font-size:14px;
      font-weight:680;
    }
    .toc-link:hover{color:#fff;padding-left:6px}
    .notice{
      margin-top:18px;
      padding:14px;
      border-radius:18px;
      background:rgba(57,217,138,.08);
      border:1px solid rgba(57,217,138,.22);
      color:#d9ffed;
      font-size:13px;
      line-height:1.65;
    }
    .accordion{
      background:transparent;
      border:0;
      margin:24px 0 0;
    }
    .accordion-item{
      margin-bottom:14px;
      border:1px solid var(--line);
      border-radius:22px;
      overflow:hidden;
      background:rgba(255,255,255,.045);
      transition:var(--ease);
    }
    .accordion-item.is-active{
      border-color:rgba(255,61,141,.38);
      box-shadow:0 12px 34px rgba(255,61,141,.10);
    }
    .accordion-title{
      border:0!important;
      background:transparent!important;
      color:#fff!important;
      font-size:16px;
      font-weight:760;
      padding:18px 54px 18px 20px;
      line-height:1.5;
    }
    .accordion-title:hover,.accordion-title:focus{
      background:rgba(255,61,141,.08)!important;
    }
    .accordion-title::before{
      color:var(--primary);
      font-size:24px;
      right:20px;
      margin-top:-13px;
    }
    .accordion-content{
      border:0!important;
      background:rgba(18,9,19,.28)!important;
      color:rgba(255,255,255,.72);
      padding:0 20px 20px;
      line-height:1.8;
    }
    .cta-card{
      padding:30px;
      background:
        radial-gradient(circle at 12% 18%, rgba(255,154,90,.22), transparent 26%),
        radial-gradient(circle at 86% 18%, rgba(139,92,255,.24), transparent 32%),
        linear-gradient(135deg,rgba(255,61,141,.18),rgba(42,24,49,.92));
      box-shadow:var(--shadow-purple);
    }
    .inline-form{
      display:grid;
      grid-template-columns:1fr auto;
      gap:12px;
      margin-top:20px;
    }
    .form-field{
      min-height:52px;
      border-radius:18px;
      border:1px solid rgba(255,255,255,.14);
      background:rgba(18,9,19,.54);
      color:white;
      padding:0 16px;
      box-shadow:none;
      margin:0;
    }
    .form-field::placeholder{color:rgba(255,255,255,.42)}
    .form-field:focus{
      border-color:rgba(255,61,141,.78);
      background:rgba(18,9,19,.72);
      box-shadow:0 0 0 4px rgba(255,61,141,.18);
      outline:none;
    }
    .fineprint{
      margin-top:12px;
      color:rgba(255,255,255,.58);
      font-size:13px;
      line-height:1.6;
    }
    .site-footer{
      position:relative;
      padding:64px 0 26px;
      background:#0d070f;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .site-footer::before{
      content:"";
      position:absolute;
      left:0;right:0;top:0;height:2px;
      background:linear-gradient(90deg,transparent,var(--primary),var(--secondary),transparent);
    }
    .footer-text{color:rgba(255,255,255,.64);max-width:520px}
    .footer-title{
      color:#fff;
      font-weight:800;
      margin-bottom:14px;
      font-size:16px;
    }
    .footer-link{
      display:block;
      color:rgba(255,255,255,.62);
      padding:6px 0;
      font-weight:650;
    }
    .footer-link:hover{color:#fff;padding-left:5px}
    .compliance{
      padding:16px;
      border-radius:18px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.09);
      color:rgba(255,255,255,.66);
      font-size:14px;
      line-height:1.75;
    }
    .footer-bottom{
      margin-top:36px;
      padding-top:20px;
      border-top:1px solid rgba(255,255,255,.08);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }
    .copyright{color:rgba(255,255,255,.48);font-size:13px}
    @media (max-width:1024px){
      .desktop-nav,.nav-cta{display:none}
      .menu-toggle{display:inline-block}
      .mobile-panel.is-open{display:block}
      .brand-text span{display:none}
      .section{padding:74px 0}
      .list-card{grid-template-columns:1fr}
      .mini-cover{width:100%;height:92px}
      .toc-card{position:relative;top:auto;margin-top:22px}
    }
    @media (max-width:768px){
      .intro{padding:48px 0 30px}
      .summary-board,.feature-card,.content-panel,.cta-card{border-radius:24px;padding:22px}
      .timeline::before{left:21px}
      .step-card{padding-left:64px}
      .step-num{left:12px}
      .inline-form{grid-template-columns:1fr}
      .inline-form .btn-primary{width:100%}
      .footer-bottom{flex-direction:column}
    }
    @media (max-width:640px){
      .nav-shell{min-height:70px}
      .brand-mark{width:38px;height:38px;border-radius:14px}
      .brand-text strong{font-size:15px;max-width:220px;overflow:hidden;text-overflow:ellipsis}
      h1{font-size:33px}
      .lead{font-size:16px}
      .section{padding:58px 0}
      .filter-shell{border-radius:22px}
      .feature-card{padding:20px}
      .cover-abstract{height:138px}
      .badge-row{gap:7px}
      .badge{font-size:12px}
    }