/* roulang page: index */
:root{
      --bg:#0c1015;
      --bg-2:#111720;
      --panel:#151c24;
      --panel-2:#1a232d;
      --line:rgba(255,255,255,.09);
      --line-strong:rgba(255,255,255,.14);
      --text:#edf2f7;
      --muted:#a8b3c1;
      --soft:#d5dde6;
      --accent:#2f7f74;
      --accent-2:#7ca7a1;
      --gold:#d6b38a;
      --gold-2:#f0dcc6;
      --danger:#ea6f5f;
      --shadow:0 16px 40px rgba(0,0,0,.32);
      --shadow-soft:0 10px 24px rgba(0,0,0,.18);
      --radius:20px;
      --radius-sm:14px;
      --radius-xs:10px;
      --container:1200px;
      --transition:.28s ease;
      --header-h:80px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
      background:
        radial-gradient(circle at top left, rgba(47,127,116,.16), transparent 34%),
        radial-gradient(circle at top right, rgba(214,179,138,.12), transparent 30%),
        linear-gradient(180deg, #0a0e13 0%, #0c1015 35%, #0d1218 100%);
      color:var(--text);
      line-height:1.7;
      letter-spacing:.2px;
      min-height:100vh;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }

    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
      background-size:72px 72px;
      opacity:.18;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.68), rgba(0,0,0,.12) 55%, rgba(0,0,0,.45));
    }

    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none;transition:color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition), opacity var(--transition)}
    button,input,textarea{
      font:inherit;
      color:inherit;
    }
    button{
      cursor:pointer;
      border:none;
      background:none;
    }
    ::selection{background:rgba(47,127,116,.34);color:#fff}
    :focus-visible{
      outline:2px solid rgba(214,179,138,.85);
      outline-offset:3px;
      border-radius:8px;
    }

    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:80;
      backdrop-filter:saturate(120%);
      background:rgba(10,14,19,.9);
      border-bottom:1px solid rgba(255,255,255,.06);
      transition:background var(--transition), box-shadow var(--transition), transform var(--transition);
    }
    .site-header.is-scrolled{
      background:rgba(10,14,19,.96);
      box-shadow:0 8px 30px rgba(0,0,0,.24);
    }
    .header-inner{
      min-height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:800;
      letter-spacing:.3px;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:
        linear-gradient(145deg, rgba(47,127,116,.95), rgba(26,35,45,.92));
      border:1px solid rgba(214,179,138,.18);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.08), 0 12px 24px rgba(0,0,0,.22);
      position:relative;
      overflow:hidden;
      flex:0 0 auto;
    }
    .brand-mark::before,
    .brand-mark::after{
      content:"";
      position:absolute;
      border-radius:999px;
      background:rgba(255,255,255,.18);
    }
    .brand-mark::before{
      width:18px;height:2px;left:10px;top:13px;
    }
    .brand-mark::after{
      width:2px;height:18px;left:20px;top:8px;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
      min-width:0;
    }
    .brand-text strong{
      font-size:1.05rem;
      letter-spacing:.2px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-text span{
      font-size:.8rem;
      color:var(--muted);
      margin-top:3px;
      white-space:nowrap;
    }

    .nav-wrap{
      display:flex;
      align-items:center;
      gap:14px;
    }
    .nav-toggle{
      display:none;
      width:44px;
      height:44px;
      border:1px solid var(--line);
      border-radius:12px;
      align-items:center;
      justify-content:center;
      background:rgba(255,255,255,.02);
      transition:background var(--transition), border-color var(--transition), transform var(--transition);
    }
    .nav-toggle:hover{
      background:rgba(255,255,255,.05);
      border-color:var(--line-strong);
    }
    .nav-toggle svg{width:20px;height:20px;fill:none;stroke:var(--text);stroke-width:1.8;stroke-linecap:round}
    .site-nav{
      display:flex;
      align-items:center;
      gap:8px;
    }
    .site-nav a{
      color:var(--soft);
      font-weight:600;
      font-size:.98rem;
      padding:10px 14px;
      border-radius:999px;
      border:1px solid transparent;
    }
    .site-nav a:hover{
      background:rgba(255,255,255,.04);
      border-color:rgba(255,255,255,.05);
      color:#fff;
    }
    .site-nav a.active{
      background:rgba(47,127,116,.16);
      border-color:rgba(47,127,116,.36);
      color:#fff;
    }

    .header-cta{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:11px 16px;
      border-radius:999px;
      font-weight:700;
      border:1px solid rgba(214,179,138,.28);
      background:linear-gradient(135deg, rgba(47,127,116,.96), rgba(31,93,86,.92));
      box-shadow:0 10px 24px rgba(0,0,0,.18);
    }
    .header-cta:hover{
      transform:translateY(-1px);
      border-color:rgba(214,179,138,.45);
      box-shadow:0 14px 28px rgba(0,0,0,.22);
    }

    .hero{
      position:relative;
      padding:30px 0 28px;
    }
    .hero-shell{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      border-radius:28px;
      background:
        linear-gradient(180deg, rgba(6,10,15,.34), rgba(6,10,15,.86)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .hero-shell::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg, rgba(12,16,21,.84) 0%, rgba(12,16,21,.68) 42%, rgba(12,16,21,.3) 100%);
    }
    .hero-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.18fr .82fr;
      gap:28px;
      align-items:stretch;
      padding:38px;
      min-height:620px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--gold-2);
      font-weight:700;
      font-size:.9rem;
      letter-spacing:.7px;
      text-transform:uppercase;
      margin-bottom:16px;
    }
    .eyebrow::before{
      content:"";
      width:28px;
      height:1px;
      background:linear-gradient(90deg, rgba(214,179,138,.08), rgba(214,179,138,.86));
    }
    .hero h1{
      margin:0;
      font-size:clamp(2.2rem, 4vw, 4.4rem);
      line-height:1.08;
      letter-spacing:-.6px;
      max-width:12em;
    }
    .hero h1 em{
      font-style:normal;
      color:var(--gold-2);
    }
    .hero-lead{
      margin:18px 0 0;
      max-width:40em;
      color:#d7e0e8;
      font-size:1.03rem;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:26px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 18px;
      border-radius:14px;
      font-weight:700;
      letter-spacing:.1px;
      border:1px solid transparent;
      transition:transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
    }
    .btn:hover{transform:translateY(-1px)}
    .btn-primary{
      background:linear-gradient(135deg, rgba(47,127,116,1), rgba(36,105,98,1));
      border-color:rgba(104,171,160,.42);
      box-shadow:0 14px 24px rgba(0,0,0,.22);
      color:#fff;
    }
    .btn-primary:hover{
      border-color:rgba(214,179,138,.32);
      box-shadow:0 18px 26px rgba(0,0,0,.28);
    }
    .btn-secondary{
      background:rgba(255,255,255,.03);
      border-color:rgba(255,255,255,.1);
      color:var(--text);
    }
    .btn-secondary:hover{
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.14);
    }
    .hero-meta{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:12px;
      margin-top:28px;
    }
    .meta-item{
      padding:16px 16px 15px;
      border-radius:18px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.08);
      min-height:112px;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
    }
    .meta-item strong{
      display:block;
      font-size:1.28rem;
      color:var(--gold-2);
      line-height:1.1;
      margin-bottom:8px;
    }
    .meta-item span{
      color:var(--soft);
      font-size:.95rem;
    }

    .hero-visual{
      display:grid;
      gap:14px;
      align-content:end;
      position:relative;
      z-index:1;
    }
    .visual-card{
      position:relative;
      overflow:hidden;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.08);
      background:var(--panel);
      box-shadow:var(--shadow-soft);
    }
    .visual-card img{
      width:100%;
      height:100%;
      object-fit:cover;
      transform:scale(1.01);
      transition:transform .55s ease, filter .55s ease;
    }
    .visual-card:hover img{
      transform:scale(1.04);
      filter:saturate(1.05);
    }
    .visual-main{
      min-height:390px;
    }
    .visual-float{
      position:absolute;
      left:18px;
      right:18px;
      bottom:18px;
      display:grid;
      grid-template-columns:1fr;
      gap:8px;
      padding:16px;
      border-radius:18px;
      background:linear-gradient(180deg, rgba(13,18,24,.08), rgba(13,18,24,.86));
      border:1px solid rgba(255,255,255,.09);
      backdrop-filter:none;
    }
    .visual-float strong{
      font-size:1.02rem;
    }
    .visual-float p{
      margin:0;
      color:var(--muted);
      font-size:.92rem;
    }
    .visual-sub{
      display:grid;
      grid-template-columns:1.04fr .96fr;
      gap:14px;
    }
    .mini-note{
      padding:18px 18px 17px;
      border-radius:22px;
      background:linear-gradient(180deg, rgba(26,35,45,.96), rgba(18,25,32,.96));
      border:1px solid rgba(255,255,255,.08);
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:12px;
      min-height:196px;
    }
    .mini-note .tag{
      display:inline-flex;
      width:max-content;
      padding:6px 10px;
      border-radius:999px;
      font-size:.78rem;
      font-weight:700;
      color:#d8f1ed;
      background:rgba(47,127,116,.16);
      border:1px solid rgba(47,127,116,.22);
    }
    .mini-note h3{
      margin:0;
      font-size:1.08rem;
    }
    .mini-note ul{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:9px;
    }
    .mini-note li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--soft);
      font-size:.95rem;
    }
    .mini-note li::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      margin-top:.52em;
      background:linear-gradient(135deg, var(--gold), var(--accent));
      flex:0 0 auto;
    }
    .mini-chip{
      padding:18px;
      border-radius:22px;
      background:
        linear-gradient(180deg, rgba(47,127,116,.14), rgba(12,16,21,.8)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border:1px solid rgba(255,255,255,.08);
      position:relative;
      overflow:hidden;
      display:flex;
      align-items:flex-end;
      min-height:196px;
    }
    .mini-chip::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(8,11,15,.12), rgba(8,11,15,.72));
    }
    .mini-chip .text{
      position:relative;
      z-index:1;
    }
    .mini-chip strong{
      display:block;
      font-size:1.02rem;
      margin-bottom:6px;
    }
    .mini-chip span{
      color:#dbe4ea;
      font-size:.94rem;
    }

    .section{
      padding:32px 0;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:22px;
    }
    .section-head h2{
      margin:0;
      font-size:clamp(1.5rem, 2.2vw, 2.2rem);
      line-height:1.18;
      letter-spacing:-.3px;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      max-width:40em;
      font-size:.98rem;
    }
    .section-badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      color:var(--gold-2);
      font-size:.82rem;
      font-weight:700;
      border:1px solid rgba(214,179,138,.2);
      background:rgba(214,179,138,.06);
      margin-bottom:10px;
    }

    .feature-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:16px;
    }
    .feature-card,
    .value-card,
    .scene-card,
    .info-card,
    .contact-card,
    .faq-wrap,
    .panel{
      border:1px solid rgba(255,255,255,.08);
      background:linear-gradient(180deg, rgba(20,27,35,.98), rgba(16,22,29,.98));
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
    }
    .feature-card{
      padding:20px;
      min-height:190px;
      position:relative;
      overflow:hidden;
      transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    .feature-card:hover,
    .value-card:hover,
    .scene-card:hover,
    .info-card:hover{
      transform:translateY(-4px);
      border-color:rgba(214,179,138,.18);
      box-shadow:0 16px 32px rgba(0,0,0,.26);
    }
    .icon{
      width:44px;
      height:44px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:rgba(47,127,116,.14);
      border:1px solid rgba(47,127,116,.22);
      color:#d8f1ed;
      margin-bottom:16px;
    }
    .icon svg{
      width:22px;
      height:22px;
      fill:none;
      stroke:currentColor;
      stroke-width:1.8;
      stroke-linecap:round;
      stroke-linejoin:round;
    }
    .feature-card h3,
    .value-card h3,
    .scene-card h3,
    .info-card h3,
    .contact-card h3{
      margin:0 0 10px;
      font-size:1.06rem;
      line-height:1.35;
    }
    .feature-card p,
    .value-card p,
    .scene-card p,
    .info-card p,
    .contact-card p{
      margin:0;
      color:var(--muted);
      font-size:.96rem;
    }
    .card-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-top:16px;
      color:var(--gold-2);
      font-weight:700;
      font-size:.92rem;
    }
    .card-link::after{
      content:"→";
      transition:transform var(--transition);
    }
    .feature-card:hover .card-link::after,
    .value-card:hover .card-link::after,
    .scene-card:hover .card-link::after{
      transform:translateX(3px);
    }

    .split{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:20px;
      align-items:stretch;
    }
    .value-card{
      padding:24px;
      overflow:hidden;
      position:relative;
    }
    .value-card.with-image{
      display:grid;
      grid-template-columns:1fr;
      gap:18px;
    }
    .value-image{
      position:relative;
      overflow:hidden;
      border-radius:20px;
      min-height:260px;
      border:1px solid rgba(255,255,255,.08);
    }
    .value-image img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .55s ease;
    }
    .value-image:hover img{
      transform:scale(1.04);
    }
    .value-list{
      margin:18px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }
    .value-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      color:#d7e0e8;
    }
    .value-list i{
      flex:0 0 auto;
      width:22px;
      height:22px;
      border-radius:50%;
      margin-top:.15em;
      background:rgba(214,179,138,.14);
      border:1px solid rgba(214,179,138,.2);
      position:relative;
    }
    .value-list i::before{
      content:"";
      position:absolute;
      left:6px;
      top:5px;
      width:7px;
      height:4px;
      border-left:2px solid var(--gold-2);
      border-bottom:2px solid var(--gold-2);
      transform:rotate(-45deg);
    }

    .stats-strip{
      margin-top:18px;
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:14px;
    }
    .stat{
      border-radius:18px;
      padding:18px 18px 17px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.08);
      min-height:122px;
    }
    .stat strong{
      display:block;
      font-size:2rem;
      line-height:1;
      color:var(--gold-2);
      letter-spacing:-.6px;
      margin-bottom:10px;
    }
    .stat span{
      display:block;
      color:var(--soft);
      font-size:.95rem;
    }

    .value-card .metric-band{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:20px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      font-size:.82rem;
      color:#dbe9e6;
      background:rgba(47,127,116,.12);
      border:1px solid rgba(47,127,116,.18);
      white-space:nowrap;
    }
    .tag.gold{
      background:rgba(214,179,138,.08);
      color:#f2ddc8;
      border-color:rgba(214,179,138,.18);
    }

    .scene-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:16px;
    }
    .scene-card{
      overflow:hidden;
      display:flex;
      flex-direction:column;
    }
    .scene-media{
      aspect-ratio:16/10;
      overflow:hidden;
      border-bottom:1px solid rgba(255,255,255,.08);
      position:relative;
    }
    .scene-media img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .55s ease;
    }
    .scene-card:hover .scene-media img{
      transform:scale(1.05);
    }
    .scene-body{
      padding:18px;
      display:grid;
      gap:12px;
    }
    .scene-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      color:var(--muted);
      font-size:.84rem;
    }
    .scene-meta .mini{
      padding:4px 8px;
      border-radius:999px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.06);
    }

    .process{
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:16px;
    }
    .step{
      padding:20px;
      border-radius:var(--radius);
      background:linear-gradient(180deg, rgba(20,27,35,.95), rgba(15,21,28,.98));
      border:1px solid rgba(255,255,255,.08);
      position:relative;
      overflow:hidden;
    }
    .step::after{
      content:"";
      position:absolute;
      inset:auto 18px 18px auto;
      width:44px;
      height:44px;
      border-radius:16px;
      background:radial-gradient(circle, rgba(47,127,116,.24), rgba(47,127,116,0));
      pointer-events:none;
    }
    .step-no{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:38px;
      height:38px;
      border-radius:12px;
      margin-bottom:14px;
      font-weight:800;
      color:#fff;
      background:linear-gradient(135deg, rgba(47,127,116,1), rgba(214,179,138,.28));
      border:1px solid rgba(214,179,138,.18);
    }
    .step h3{margin-bottom:8px}
    .step p{margin:0;color:var(--muted);font-size:.95rem}

    .faq-wrap{
      padding:6px;
      display:grid;
      gap:10px;
    }
    details{
      border-radius:18px;
      background:rgba(255,255,255,.025);
      border:1px solid rgba(255,255,255,.07);
      overflow:hidden;
    }
    summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      font-weight:700;
      color:#eef3f7;
    }
    summary::-webkit-details-marker{display:none}
    summary::after{
      content:"+";
      color:var(--gold-2);
      font-size:1.3rem;
      line-height:1;
      flex:0 0 auto;
    }
    details[open] summary::after{content:"–"}
    details .answer{
      padding:0 20px 18px;
      color:var(--muted);
      font-size:.96rem;
    }

    .contact-grid{
      display:grid;
      grid-template-columns:.95fr 1.05fr;
      gap:16px;
      align-items:stretch;
    }
    .contact-card{
      padding:24px;
    }
    .contact-list{
      display:grid;
      gap:12px;
      margin-top:16px;
    }
    .contact-item{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px 16px;
      border-radius:16px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.07);
    }
    .contact-item strong{
      display:block;
      margin-bottom:3px;
    }
    .contact-item span{
      color:var(--muted);
      font-size:.95rem;
    }
    .form{
      padding:24px;
    }
    .form-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
    }
    .field{
      display:grid;
      gap:8px;
    }
    .field.full{grid-column:1/-1}
    .field label{
      font-size:.93rem;
      color:#dfe8ef;
      font-weight:700;
    }
    .field input,
    .field textarea{
      width:100%;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.09);
      background:rgba(255,255,255,.03);
      padding:13px 14px;
      color:#fff;
      transition:border-color var(--transition), background var(--transition), box-shadow var(--transition);
    }
    .field input::placeholder,
    .field textarea::placeholder{color:#7f8993}
    .field input:focus,
    .field textarea:focus{
      outline:none;
      border-color:rgba(214,179,138,.34);
      box-shadow:0 0 0 4px rgba(214,179,138,.08);
      background:rgba(255,255,255,.05);
    }
    .field textarea{
      min-height:132px;
      resize:vertical;
    }
    .form-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      align-items:center;
      margin-top:16px;
    }
    .form-note{
      margin:14px 0 0;
      color:var(--muted);
      font-size:.9rem;
    }
    .form-status{
      margin-top:12px;
      color:#d8f1ed;
      font-size:.92rem;
      min-height:1.4em;
    }

    .footer{
      margin-top:26px;
      padding:28px 0 34px;
      border-top:1px solid rgba(255,255,255,.08);
      background:linear-gradient(180deg, rgba(10,14,19,.02), rgba(10,14,19,.82));
    }
    .footer-top{
      display:grid;
      grid-template-columns:1.2fr .8fr 1fr;
      gap:18px;
      align-items:start;
      padding-bottom:22px;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .footer-brand{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .footer-brand p{
      margin:0;
      color:var(--muted);
      max-width:32em;
    }
    .footer-nav,
    .footer-contact{
      display:grid;
      gap:10px;
      align-content:start;
    }
    .footer-title{
      font-size:.96rem;
      font-weight:800;
      color:#fff;
      margin-bottom:4px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .footer-links a{
      color:var(--soft);
      padding:8px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.06);
      font-size:.92rem;
    }
    .footer-links a:hover{
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.1);
    }
    .footer-bottom{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding-top:18px;
      color:var(--muted);
      font-size:.92rem;
      flex-wrap:wrap;
    }

    .back-top{
      position:fixed;
      right:20px;
      bottom:20px;
      width:48px;
      height:48px;
      border-radius:16px;
      background:rgba(20,27,35,.9);
      color:#fff;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow-soft);
      display:grid;
      place-items:center;
      opacity:0;
      visibility:hidden;
      transform:translateY(8px);
      transition:opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition);
      z-index:90;
    }
    .back-top.show{
      opacity:1;
      visibility:visible;
      transform:translateY(0);
    }
    .back-top:hover{background:rgba(47,127,116,.2)}
    .back-top svg{
      width:20px;
      height:20px;
      fill:none;
      stroke:currentColor;
      stroke-width:1.8;
      stroke-linecap:round;
      stroke-linejoin:round;
    }

    @media (max-width: 1080px){
      .hero-grid{grid-template-columns:1fr;min-height:auto}
      .hero h1{max-width:14em}
      .hero-visual{grid-template-columns:1fr 1fr}
      .visual-main{min-height:340px}
      .feature-grid,
      .scene-grid,
      .process,
      .stats-strip{grid-template-columns:repeat(2, minmax(0, 1fr))}
      .split,
      .contact-grid,
      .footer-top{grid-template-columns:1fr}
    }
    @media (max-width: 820px){
      :root{--header-h:72px}
      .header-inner{position:relative}
      .site-nav{
        position:absolute;
        top:calc(100% + 12px);
        right:0;
        left:0;
        flex-direction:column;
        align-items:stretch;
        padding:12px;
        background:rgba(12,16,21,.98);
        border:1px solid rgba(255,255,255,.08);
        border-radius:18px;
        box-shadow:var(--shadow);
        display:none;
      }
      .site-header.nav-open .site-nav{display:flex}
      .site-nav a{border-radius:14px}
      .nav-toggle{display:inline-flex}
      .header-cta{display:none}
      .hero-grid{padding:26px}
      .hero-visual{grid-template-columns:1fr}
      .hero-meta{grid-template-columns:1fr}
      .section{padding:26px 0}
      .section-head{flex-direction:column;align-items:flex-start}
      .form-grid{grid-template-columns:1fr}
    }
    @media (max-width: 560px){
      .container{width:min(var(--container), calc(100% - 28px))}
      .hero{padding:18px 0 18px}
      .hero-grid{padding:22px}
      .hero h1{font-size:clamp(1.95rem, 9vw, 3rem)}
      .hero-lead{font-size:.98rem}
      .hero-actions{gap:10px}
      .btn{width:100%}
      .feature-grid,
      .scene-grid,
      .process,
      .stats-strip{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column;align-items:flex-start}
      summary{padding:16px 16px}
      .answer{padding:0 16px 16px}
      .contact-card,.form,.value-card,.feature-card,.scene-body,.step{padding:18px}
    }

/* roulang page: category1 */
:root{
      --bg:#0b0f14;
      --bg-soft:#111723;
      --surface:#151c26;
      --surface-2:#1a2230;
      --line:rgba(255,255,255,.09);
      --line-strong:rgba(255,255,255,.15);
      --text:#e9eef5;
      --muted:#a8b3c2;
      --faint:#7f8a98;
      --brand:#9fc5b6;
      --brand-strong:#7fb9a9;
      --accent:#d6b36d;
      --accent-soft:rgba(214,179,109,.18);
      --shadow:0 16px 40px rgba(0,0,0,.28);
      --shadow-soft:0 10px 24px rgba(0,0,0,.16);
      --radius:18px;
      --radius-sm:12px;
      --radius-lg:28px;
      --container:1180px;
      --gap:24px;
      --gap-sm:14px;
      --ease:cubic-bezier(.2,.7,.2,1);
      --focus:0 0 0 3px rgba(159,197,182,.22);
      --header-h:86px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
      background:
        radial-gradient(1200px 700px at 15% -10%, rgba(127,185,169,.12), transparent 55%),
        radial-gradient(900px 500px at 92% 0%, rgba(214,179,109,.09), transparent 48%),
        linear-gradient(180deg, #0a0e13 0%, #0d1319 36%, #0b0f14 100%);
      color:var(--text);
      line-height:1.7;
      letter-spacing:.2px;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
      overflow-x:hidden;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none;transition:all .28s var(--ease)}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(159,197,182,.25);color:#fff}
    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }
    .skip-link{
      position:absolute;left:-9999px;top:12px;z-index:1000;
      background:#fff;color:#111;padding:10px 14px;border-radius:999px
    }
    .skip-link:focus{left:16px;outline:none;box-shadow:var(--focus)}
    .site-header{
      position:sticky;top:0;z-index:100;
      backdrop-filter:saturate(120%) blur(14px);
      background:linear-gradient(180deg, rgba(11,15,20,.92), rgba(11,15,20,.72));
      border-bottom:1px solid transparent;
      transition:all .3s var(--ease);
    }
    .site-header.is-scrolled{
      border-bottom-color:var(--line);
      box-shadow:0 8px 28px rgba(0,0,0,.16);
    }
    .header-inner{
      min-height:var(--header-h);
      display:flex;align-items:center;justify-content:space-between;gap:18px;
    }
    .brand{
      display:inline-flex;align-items:center;gap:14px;min-width:0;
    }
    .brand-mark{
      width:40px;height:40px;border-radius:14px;flex:none;
      background:
        linear-gradient(145deg, rgba(159,197,182,.95), rgba(127,185,169,.55)),
        linear-gradient(180deg, rgba(255,255,255,.18), transparent);
      position:relative;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.24), 0 12px 24px rgba(0,0,0,.18);
    }
    .brand-mark:before,
    .brand-mark:after{
      content:"";position:absolute;inset:10px;border-radius:10px;border:1.5px solid rgba(13,19,25,.72)
    }
    .brand-mark:after{
      inset:auto 8px 8px auto;width:10px;height:10px;border-radius:50%;
      background:rgba(13,19,25,.72);border:none
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
    .brand-text strong{
      font-size:1.02rem;letter-spacing:.4px;font-weight:800;color:var(--text)
    }
    .brand-text span{
      font-size:.85rem;color:var(--muted);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis
    }
    .nav-wrap{
      display:flex;align-items:center;gap:16px;min-width:0;
    }
    .site-nav{
      display:flex;align-items:center;gap:6px;
      padding:8px;background:rgba(255,255,255,.02);
      border:1px solid var(--line);
      border-radius:999px;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
    }
    .site-nav a{
      position:relative;
      padding:10px 16px;
      border-radius:999px;
      color:var(--muted);
      font-size:.96rem;
      font-weight:600;
      letter-spacing:.2px;
    }
    .site-nav a:hover,
    .site-nav a:focus-visible{
      color:var(--text);
      background:rgba(255,255,255,.04);
      outline:none;
    }
    .site-nav a.active,
    .site-nav a[aria-current="page"]{
      color:#0e151a;
      background:linear-gradient(135deg, rgba(159,197,182,1), rgba(214,179,109,.96));
      box-shadow:0 10px 20px rgba(159,197,182,.18);
    }
    .header-cta,
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:10px;
      min-height:46px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:700;
      letter-spacing:.2px;
      transition:transform .28s var(--ease), background .28s var(--ease), border-color .28s var(--ease), color .28s var(--ease), box-shadow .28s var(--ease);
      will-change:transform;
    }
    .header-cta{
      background:linear-gradient(135deg, rgba(159,197,182,1), rgba(127,185,169,.88));
      color:#0d1519;
      box-shadow:0 12px 24px rgba(127,185,169,.16);
    }
    .header-cta:hover,.header-cta:focus-visible,
    .btn:hover,.btn:focus-visible{transform:translateY(-1px);outline:none;box-shadow:var(--shadow-soft)}
    .header-cta:active,.btn:active{transform:translateY(0)}
    .btn-primary{
      background:linear-gradient(135deg, rgba(159,197,182,1), rgba(127,185,169,.9));
      color:#0d1519;
    }
    .btn-secondary{
      background:rgba(255,255,255,.03);
      color:var(--text);
      border-color:var(--line);
    }
    .btn-secondary:hover,.btn-secondary:focus-visible{
      border-color:rgba(159,197,182,.45);
      background:rgba(159,197,182,.07);
    }
    .btn-ghost{
      background:transparent;
      color:var(--muted);
      border-color:var(--line);
    }
    .nav-toggle{
      display:none;align-items:center;justify-content:center;
      width:46px;height:46px;border-radius:14px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.02);
      color:var(--text);
    }
    .nav-toggle svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round}
    .hero{
      position:relative;
      padding:38px 0 24px;
    }
    .hero-panel{
      position:relative;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(9,13,18,.88), rgba(16,21,29,.84)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      isolation:isolate;
    }
    .hero-panel:before{
      content:"";position:absolute;inset:0;
      background:
        radial-gradient(700px 420px at 15% 18%, rgba(159,197,182,.12), transparent 55%),
        radial-gradient(540px 320px at 88% 12%, rgba(214,179,109,.12), transparent 48%);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:1.2fr .88fr;
      gap:28px;
      align-items:stretch;
      padding:34px;
    }
    .crumbs{
      display:flex;align-items:center;flex-wrap:wrap;gap:10px;
      color:var(--muted);
      font-size:.92rem;
      margin-bottom:16px;
    }
    .crumbs span{opacity:.68}
    .crumbs strong{color:var(--text)}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(159,197,182,.1);
      border:1px solid rgba(159,197,182,.16);
      color:#d9eee6;
      font-size:.9rem;
      font-weight:700;
      margin-bottom:16px;
    }
    .eyebrow i{
      width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;
      box-shadow:0 0 0 5px rgba(214,179,109,.15)
    }
    .hero h1{
      margin:0;
      font-size:clamp(2.2rem, 5vw, 4.3rem);
      line-height:1.08;
      letter-spacing:-.8px;
      font-weight:900;
      max-width:12ch;
    }
    .hero p.lead{
      margin:18px 0 0;
      max-width:36em;
      font-size:1.06rem;
      color:var(--muted);
    }
    .hero-actions{
      display:flex;flex-wrap:wrap;gap:12px;
      margin-top:28px;
    }
    .mini-tags{
      display:flex;flex-wrap:wrap;gap:10px;
      margin-top:22px;
    }
    .tag{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      background:rgba(255,255,255,.03);
      border:1px solid var(--line);
      color:var(--muted);
      font-size:.9rem;
    }
    .tag::before{
      content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-strong);
      box-shadow:0 0 0 4px rgba(127,185,169,.12);
    }
    .hero-visual{
      display:flex;flex-direction:column;gap:14px;justify-content:space-between;
    }
    .visual-card{
      position:relative;overflow:hidden;
      min-height:290px;
      border-radius:24px;
      border:1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(8,12,16,.16), rgba(8,12,16,.72)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
    }
    .visual-card .overlay{
      position:absolute;inset:auto 0 0 0;
      padding:20px;
      background:linear-gradient(180deg, transparent, rgba(8,12,16,.88));
    }
    .visual-card .overlay h2{
      margin:0 0 8px;
      font-size:1.2rem;
      font-weight:800;
    }
    .visual-card .overlay p{
      margin:0;color:#d7dce4;font-size:.94rem;max-width:28ch
    }
    .hero-stat{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
    }
    .stat{
      padding:16px 14px;
      border-radius:18px;
      background:rgba(255,255,255,.03);
      border:1px solid var(--line);
    }
    .stat strong{
      display:block;font-size:1.42rem;line-height:1.1;
      color:#fff;
    }
    .stat span{
      display:block;margin-top:6px;font-size:.84rem;color:var(--muted)
    }
    main{padding:18px 0 72px}
    .section{
      padding:36px 0;
    }
    .section-head{
      display:flex;justify-content:space-between;align-items:flex-end;gap:18px;flex-wrap:wrap;
      margin-bottom:22px;
    }
    .section-head h2{
      margin:0;
      font-size:clamp(1.5rem, 2.6vw, 2.2rem);
      line-height:1.2;
      letter-spacing:-.3px;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      max-width:52ch;
    }
    .section-line{
      height:1px;background:linear-gradient(90deg, rgba(255,255,255,.12), transparent);
      margin-top:18px;
    }
    .feature-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .card{
      position:relative;
      overflow:hidden;
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.02));
      border-radius:var(--radius);
      box-shadow:0 10px 22px rgba(0,0,0,.12);
      transition:transform .28s var(--ease), border-color .28s var(--ease), box-shadow .28s var(--ease), background .28s var(--ease);
      height:100%;
    }
    .card:hover{
      transform:translateY(-2px);
      border-color:rgba(159,197,182,.24);
      box-shadow:0 18px 34px rgba(0,0,0,.18);
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.025));
    }
    .feature-card{
      padding:20px;
      min-height:188px;
    }
    .icon{
      width:48px;height:48px;border-radius:16px;
      display:inline-flex;align-items:center;justify-content:center;
      background:rgba(159,197,182,.1);
      border:1px solid rgba(159,197,182,.16);
      color:#d8efe7;
      margin-bottom:16px;
    }
    .icon svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.75;fill:none;stroke-linecap:round;stroke-linejoin:round}
    .card h3{
      margin:0 0 8px;
      font-size:1.08rem;
      line-height:1.35;
    }
    .card p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }
    .split{
      display:grid;
      grid-template-columns:1.03fr .97fr;
      gap:22px;
      align-items:stretch;
    }
    .split-media{
      min-height:100%;
      overflow:hidden;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(10,14,18,.12), rgba(10,14,18,.8)),
        url('/assets/images/coverpic/cover-2.webp') center/cover no-repeat;
      position:relative;
      box-shadow:var(--shadow);
    }
    .split-media .caption{
      position:absolute;left:18px;right:18px;bottom:18px;
      padding:16px 18px;
      border-radius:18px;
      background:rgba(10,14,18,.64);
      border:1px solid rgba(255,255,255,.12);
      backdrop-filter:blur(8px);
    }
    .split-media .caption strong{
      display:block;font-size:1rem;margin-bottom:6px
    }
    .split-media .caption span{
      color:#dce1e8;font-size:.92rem
    }
    .split-content{
      padding:24px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.02));
    }
    .split-content .lede{
      margin:0 0 18px;
      color:var(--muted);
    }
    .list{
      list-style:none;margin:0;padding:0;display:grid;gap:12px;
    }
    .list li{
      display:flex;gap:12px;align-items:flex-start;
      padding:12px 0;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .list li:first-child{border-top:none;padding-top:0}
    .check{
      width:24px;height:24px;flex:none;margin-top:1px;
      border-radius:8px;
      display:inline-flex;align-items:center;justify-content:center;
      background:rgba(214,179,109,.12);
      color:#f1d9a9;
      border:1px solid rgba(214,179,109,.18);
    }
    .check svg{width:15px;height:15px;stroke:currentColor;stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round}
    .list strong{display:block;margin-bottom:4px}
    .list span{display:block;color:var(--muted);font-size:.95rem}
    .metrics{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
    }
    .metric{
      padding:18px 16px;
      border-radius:18px;
      background:linear-gradient(180deg, rgba(159,197,182,.08), rgba(255,255,255,.025));
      border:1px solid rgba(159,197,182,.12);
    }
    .metric strong{
      display:block;
      font-size:1.8rem;
      line-height:1;
      color:#fff;
      letter-spacing:-.5px;
    }
    .metric span{
      display:block;margin-top:8px;color:var(--muted);font-size:.92rem
    }
    .toolbar{
      display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
      margin-bottom:18px;
    }
    .filter-group{
      display:flex;flex-wrap:wrap;gap:10px;
    }
    .filter-chip{
      display:inline-flex;align-items:center;gap:8px;
      padding:9px 14px;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.02);
      color:var(--muted);
      font-size:.92rem;
      font-weight:600;
    }
    .filter-chip.active{
      color:#0f1418;
      background:linear-gradient(135deg, rgba(159,197,182,1), rgba(214,179,109,.9));
      border-color:transparent;
    }
    .filter-chip:hover,.filter-chip:focus-visible{
      color:var(--text);
      outline:none;
      background:rgba(255,255,255,.04);
      border-color:rgba(159,197,182,.2);
    }
    .content-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .content-card{
      overflow:hidden;
      display:flex;flex-direction:column;
    }
    .content-thumb{
      position:relative;
      aspect-ratio:16/10;
      overflow:hidden;
      background:#1c2430;
    }
    .content-thumb img{
      width:100%;height:100%;object-fit:cover;
      transition:transform .5s var(--ease), filter .5s var(--ease);
    }
    .content-card:hover .content-thumb img{
      transform:scale(1.04);
      filter:saturate(1.06);
    }
    .content-body{
      padding:18px;
      display:flex;flex-direction:column;gap:12px;
      flex:1;
    }
    .meta-row{
      display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
      color:var(--faint);
      font-size:.86rem;
    }
    .badge{
      display:inline-flex;align-items:center;gap:6px;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(127,185,169,.1);
      border:1px solid rgba(127,185,169,.16);
      color:#d8efe7;
      font-weight:700;
    }
    .content-body h3{
      margin:0;
      font-size:1.08rem;
      line-height:1.45;
    }
    .content-body p{margin:0;color:var(--muted);font-size:.94rem}
    .content-body .link{
      margin-top:auto;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#d9ebdf;
      font-weight:700;
    }
    .content-body .link svg{
      width:16px;height:16px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round;
      transition:transform .28s var(--ease)
    }
    .content-card:hover .link svg{transform:translateX(2px)}
    .timeline{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .step{
      padding:20px;
      border-radius:22px;
      background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
      border:1px solid var(--line);
      position:relative;
      overflow:hidden;
    }
    .step .num{
      display:inline-flex;align-items:center;justify-content:center;
      width:42px;height:42px;border-radius:14px;
      background:linear-gradient(135deg, rgba(159,197,182,1), rgba(214,179,109,.9));
      color:#0d1519;font-weight:900;
      margin-bottom:14px;
      box-shadow:0 12px 24px rgba(159,197,182,.15);
    }
    .step h3{margin:0 0 8px;font-size:1.02rem}
    .step p{margin:0;color:var(--muted);font-size:.94rem}
    .info-panel{
      display:grid;
      grid-template-columns:1fr .9fr;
      gap:22px;
      align-items:stretch;
    }
    .contact-box,
    .panel{
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.02));
      overflow:hidden;
    }
    .panel{
      padding:24px;
    }
    .panel h3{margin:0 0 10px;font-size:1.16rem}
    .panel p{margin:0;color:var(--muted)}
    .contact-box{
      padding:24px;
      background:
        radial-gradient(680px 320px at 0% 0%, rgba(159,197,182,.12), transparent 52%),
        linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.02));
    }
    .form-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
      margin-top:18px;
    }
    .field{
      display:flex;flex-direction:column;gap:8px;
    }
    .field.full{grid-column:1/-1}
    .field label{
      font-size:.92rem;color:#dfe5ee;font-weight:700
    }
    .field input,.field textarea{
      width:100%;
      border-radius:14px;
      padding:14px 15px;
      border:1px solid var(--line);
      background:rgba(7,11,16,.46);
      color:var(--text);
      outline:none;
      transition:border-color .28s var(--ease), box-shadow .28s var(--ease), background .28s var(--ease);
    }
    .field input::placeholder,.field textarea::placeholder{color:#7f8a98}
    .field input:focus,.field textarea:focus{
      border-color:rgba(159,197,182,.34);
      box-shadow:var(--focus);
      background:rgba(7,11,16,.62);
    }
    .field textarea{
      min-height:132px;
      resize:vertical;
    }
    .form-actions{
      margin-top:16px;
      display:flex;flex-wrap:wrap;gap:12px;align-items:center;
    }
    .form-note{
      color:var(--faint);
      font-size:.9rem;
    }
    .faq-wrap{
      display:grid;
      gap:12px;
    }
    .faq-item{
      border:1px solid var(--line);
      border-radius:18px;
      background:rgba(255,255,255,.025);
      overflow:hidden;
    }
    .faq-item summary{
      list-style:none;
      padding:18px 20px;
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      cursor:pointer;
      font-weight:700;
      color:var(--text);
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary .plus{
      width:34px;height:34px;border-radius:12px;
      display:inline-flex;align-items:center;justify-content:center;
      border:1px solid var(--line);
      color:var(--muted);
      flex:none;
      transition:transform .28s var(--ease), background .28s var(--ease);
    }
    .faq-item[open] summary .plus{
      transform:rotate(45deg);
      background:rgba(159,197,182,.09);
      color:#d7ece4;
    }
    .faq-answer{
      padding:0 20px 18px;
      color:var(--muted);
    }
    .cta{
      padding:0 0 26px;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-lg);
      border:1px solid rgba(159,197,182,.18);
      background:
        linear-gradient(135deg, rgba(19,28,39,.96), rgba(10,14,20,.9)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .cta-inner{
      padding:28px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
      flex-wrap:wrap;
    }
    .cta-inner h2{
      margin:0 0 8px;
      font-size:clamp(1.45rem, 2.4vw, 2rem);
      line-height:1.22;
    }
    .cta-inner p{
      margin:0;
      color:var(--muted);
      max-width:48ch;
    }
    .cta-actions{
      display:flex;flex-wrap:wrap;gap:12px;align-items:center;
    }
    .related{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .related .card{
      padding:18px;
      min-height:150px;
      display:flex;flex-direction:column;justify-content:space-between;
    }
    .related .card .small{
      color:var(--muted);font-size:.92rem
    }
    .related .card .go{
      margin-top:16px;
      display:inline-flex;align-items:center;gap:8px;
      color:#d9ebdf;font-weight:700
    }
    .related .card .go svg{
      width:16px;height:16px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round
    }
    .footer{
      border-top:1px solid var(--line);
      background:linear-gradient(180deg, rgba(8,12,16,.2), rgba(6,10,14,.75));
      padding:34px 0 18px;
    }
    .footer-top{
      display:grid;
      grid-template-columns:1.3fr .8fr .9fr;
      gap:22px;
      padding-bottom:22px;
      border-bottom:1px solid var(--line);
    }
    .footer-brand p{
      margin:14px 0 0;
      color:var(--muted);
      max-width:34em;
      font-size:.95rem;
    }
    .footer-title{
      margin-bottom:14px;
      font-size:1rem;
      font-weight:800;
      color:#fff;
    }
    .footer-links{
      display:flex;flex-wrap:wrap;gap:10px;
    }
    .footer-links a{
      padding:8px 0;
      color:var(--muted);
      display:inline-flex;
    }
    .footer-links a:hover,.footer-links a:focus-visible{
      color:#fff;
      outline:none;
    }
    .footer-contact p{
      margin:0 0 14px;
      color:var(--muted)
    }
    .footer-bottom{
      display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
      padding-top:16px;
      color:var(--faint);
      font-size:.9rem;
    }
    .section-divider{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(255,255,255,.11), transparent);
      margin-top:4px;
    }
    .sr-only{
      position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
    }
    :focus-visible{outline:none;box-shadow:var(--focus)}
    @media (max-width: 1080px){
      .hero-grid,.split,.info-panel,.footer-top{grid-template-columns:1fr}
      .feature-grid,.content-grid,.timeline,.related,.metrics{grid-template-columns:repeat(2,1fr)}
      .hero h1{max-width:none}
    }
    @media (max-width: 860px){
      .site-nav{
        position:absolute;top:calc(var(--header-h) - 6px);right:20px;left:20px;
        display:none;flex-direction:column;align-items:stretch;gap:4px;
        padding:10px;border-radius:22px;
        background:rgba(12,16,22,.96);
        border:1px solid var(--line-strong);
        box-shadow:var(--shadow);
      }
      .site-nav.open{display:flex}
      .site-nav a{border-radius:14px}
      .nav-toggle{display:inline-flex}
      .header-cta{display:none}
      .hero{padding-top:24px}
      .hero-grid{padding:22px}
      .visual-card{min-height:240px}
      .feature-grid,.content-grid,.timeline,.related,.metrics,.hero-stat{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
      .cta-inner{padding:22px}
    }
    @media (max-width: 560px){
      :root{--header-h:76px}
      .container{width:min(var(--container), calc(100% - 28px))}
      .header-inner{min-height:var(--header-h)}
      .brand-mark{width:36px;height:36px;border-radius:12px}
      .brand-text strong{font-size:.98rem}
      .brand-text span{font-size:.8rem}
      .hero-grid,.panel,.split-content,.contact-box{padding:18px}
      .hero h1{font-size:clamp(2rem, 10vw, 2.7rem)}
      .hero p.lead{font-size:1rem}
      .section{padding:28px 0}
      .section-head{align-items:flex-start}
      .cta-inner{padding:18px}
      .faq-item summary{padding:16px}
      .faq-answer{padding:0 16px 16px}
      .footer{padding-top:28px}
    }