/* roulang page: index */
:root{
      --bg:#07111b;
      --bg-soft:#0d1724;
      --surface:#101d2d;
      --surface-2:#132436;
      --surface-3:#172b41;
      --line:#27425e;
      --text:#eef5ff;
      --muted:#a6bad2;
      --muted-2:#7f95ad;
      --brand:#31d0aa;
      --brand-2:#ff8a65;
      --brand-3:#ffd166;
      --danger:#ff5d73;
      --shadow:0 18px 50px rgba(3,10,18,.34);
      --radius:16px;
      --radius-sm:12px;
      --radius-xs:10px;
      --container:1180px;
      --speed:.22s ease;
    }

    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        linear-gradient(180deg, #07111b 0%, #081520 42%, #061019 100%);
      line-height:1.6;
      letter-spacing:0;
      overflow-x:hidden;
      padding-bottom:84px;
    }
    a{color:inherit;text-decoration:none;transition:color var(--speed),transform var(--speed),background-color var(--speed),border-color var(--speed),box-shadow var(--speed)}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    ::selection{background:rgba(49,208,170,.24);color:#fff}
    :focus-visible{outline:3px solid rgba(49,208,170,.45);outline-offset:2px}

    .site-shell{
      position:relative;
      min-height:100vh;
      background:
        linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0) 20%),
        repeating-linear-gradient(90deg, rgba(255,255,255,.018) 0, rgba(255,255,255,.018) 1px, transparent 1px, transparent 84px);
    }

    .container-narrow{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1030;
      backdrop-filter:saturate(140%) blur(16px);
      background:rgba(7,17,27,.76);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .navbar{
      padding:.9rem 0;
    }
    .navbar-brand{
      display:inline-flex;
      align-items:center;
      gap:.7rem;
      font-weight:800;
      color:var(--text)!important;
      letter-spacing:0;
      white-space:nowrap;
    }
    .brand-mark{
      width:40px;height:40px;
      border-radius:14px;
      background:
        linear-gradient(135deg, rgba(49,208,170,.18), rgba(255,138,101,.18)),
        linear-gradient(135deg, #17344d, #102235);
      border:1px solid rgba(255,255,255,.12);
      display:grid;
      place-items:center;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
      flex:0 0 auto;
    }
    .brand-mark i{color:var(--brand);font-size:1.05rem}
    .brand-name{
      font-size:1.05rem;
      line-height:1.1;
    }
    .brand-sub{
      display:block;
      font-size:.76rem;
      color:var(--muted-2);
      font-weight:500;
      margin-top:.15rem;
    }

    .navbar-toggler{
      border:1px solid rgba(255,255,255,.16)!important;
      background:rgba(255,255,255,.04)!important;
      box-shadow:none!important;
    }
    .navbar-toggler-icon{
      filter:brightness(1.3);
    }
    .navbar-nav{
      gap:.45rem;
    }
    .nav-link{
      color:var(--muted)!important;
      padding:.6rem .95rem!important;
      border-radius:999px;
      font-weight:600;
      border:1px solid transparent;
      transition:background-color var(--speed),color var(--speed),border-color var(--speed),transform var(--speed);
    }
    .nav-link:hover,
    .nav-link:focus{
      color:#fff!important;
      background:rgba(255,255,255,.05);
      border-color:rgba(255,255,255,.08);
    }
    .nav-link.active{
      color:#051219!important;
      background:linear-gradient(135deg, var(--brand), #8ef0d4);
      border-color:transparent;
      box-shadow:0 10px 24px rgba(49,208,170,.18);
    }

    .nav-cta{
      display:flex;
      align-items:center;
      gap:.75rem;
      margin-left:1rem;
    }
    .btn-ui{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:.55rem;
      border-radius:999px;
      padding:.8rem 1.12rem;
      font-weight:700;
      border:1px solid transparent;
      transition:transform var(--speed),box-shadow var(--speed),background-color var(--speed),border-color var(--speed),color var(--speed),opacity var(--speed);
      white-space:nowrap;
      letter-spacing:0;
    }
    .btn-ui:hover{transform:translateY(-1px)}
    .btn-ui:active{transform:translateY(0)}
    .btn-brand{
      background:linear-gradient(135deg, var(--brand), #8ef0d4);
      color:#06111a;
      box-shadow:0 14px 28px rgba(49,208,170,.18);
    }
    .btn-brand:hover{
      color:#041018;
      box-shadow:0 16px 30px rgba(49,208,170,.24);
    }
    .btn-soft{
      background:rgba(255,255,255,.05);
      color:var(--text);
      border-color:rgba(255,255,255,.1);
    }
    .btn-soft:hover{
      background:rgba(255,255,255,.08);
      color:#fff;
      border-color:rgba(255,255,255,.14);
    }
    .btn-warm{
      background:linear-gradient(135deg, var(--brand-2), #ffb48f);
      color:#201009;
      box-shadow:0 14px 28px rgba(255,138,101,.18);
    }
    .btn-warm:hover{
      color:#120905;
      box-shadow:0 16px 30px rgba(255,138,101,.24);
    }

    .hero{
      padding:34px 0 18px;
    }
    .hero-panel{
      position:relative;
      border:1px solid rgba(255,255,255,.08);
      background:
        linear-gradient(135deg, rgba(17,29,44,.96), rgba(8,15,24,.96));
      border-radius:24px;
      overflow:hidden;
      box-shadow:var(--shadow);
    }
    .hero-panel::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(135deg, rgba(49,208,170,.08), transparent 26%),
        linear-gradient(225deg, rgba(255,138,101,.08), transparent 28%),
        repeating-linear-gradient(90deg, rgba(255,255,255,.03) 0, rgba(255,255,255,.03) 1px, transparent 1px, transparent 76px);
      pointer-events:none;
      opacity:.95;
    }
    .hero-inner{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:26px;
      padding:30px;
      align-items:stretch;
    }
    .hero-copy{
      display:flex;
      flex-direction:column;
      justify-content:center;
      padding:4px 0;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:.5rem;
      width:max-content;
      padding:.45rem .8rem;
      border-radius:999px;
      color:#dffcf4;
      background:rgba(49,208,170,.12);
      border:1px solid rgba(49,208,170,.18);
      font-weight:700;
      letter-spacing:0;
      font-size:.95rem;
      margin-bottom:1rem;
    }
    .hero h1{
      margin:0;
      font-size:3rem;
      line-height:1.08;
      letter-spacing:0;
      max-width:11ch;
    }
    .hero p{
      margin:1rem 0 0;
      color:var(--muted);
      max-width:56ch;
      font-size:1.03rem;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:.8rem;
      margin-top:1.5rem;
    }
    .hero-tags{
      display:flex;
      flex-wrap:wrap;
      gap:.55rem;
      margin-top:1.3rem;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.48rem .72rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:var(--text);
      font-size:.92rem;
    }

    .hero-stage{
      position:relative;
      min-height:100%;
    }
    .stage-card{
      height:100%;
      border-radius:20px;
      background:
        linear-gradient(180deg, rgba(20,35,52,.92), rgba(11,20,31,.96));
      border:1px solid rgba(255,255,255,.1);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
      padding:18px;
      display:flex;
      flex-direction:column;
      gap:14px;
    }
    .stage-head{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      color:var(--muted);
      font-size:.92rem;
    }
    .live-badge{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.4rem .7rem;
      border-radius:999px;
      background:rgba(255,93,115,.12);
      border:1px solid rgba(255,93,115,.24);
      color:#ffd7dd;
      font-weight:700;
    }
    .live-badge i{color:var(--danger)}
    .stage-visual{
      position:relative;
      flex:1;
      border-radius:18px;
      overflow:hidden;
      min-height:290px;
      background:
        linear-gradient(135deg, rgba(16,30,46,.96), rgba(11,20,30,.96)),
        linear-gradient(90deg, rgba(49,208,170,.16), rgba(255,138,101,.08));
      border:1px solid rgba(255,255,255,.08);
    }
    .stage-visual::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, transparent 0, rgba(0,0,0,.1) 100%),
        repeating-linear-gradient(0deg, rgba(255,255,255,.03) 0, rgba(255,255,255,.03) 1px, transparent 1px, transparent 34px),
        repeating-linear-gradient(90deg, rgba(255,255,255,.022) 0, rgba(255,255,255,.022) 1px, transparent 1px, transparent 34px);
      opacity:.9;
      pointer-events:none;
    }
    .preview-stack{
      position:absolute;
      inset:16px;
      display:grid;
      grid-template-columns:1fr;
      gap:12px;
    }
    .preview-banner{
      height:86px;
      border-radius:16px;
      background:
        linear-gradient(135deg, rgba(49,208,170,.16), rgba(255,138,101,.12)),
        linear-gradient(90deg, #17334c, #12263a);
      border:1px solid rgba(255,255,255,.1);
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      padding:14px 16px;
    }
    .preview-banner strong{
      font-size:1rem;
      display:block;
    }
    .preview-banner span{
      color:var(--muted);
      font-size:.9rem;
      display:block;
      margin-top:.2rem;
    }
    .countdown-wrap{
      border-radius:16px;
      background:rgba(8,15,23,.7);
      border:1px solid rgba(255,255,255,.08);
      padding:14px;
      backdrop-filter:blur(10px);
    }
    .countdown-title{
      color:#dffcf4;
      font-weight:700;
      margin-bottom:10px;
      display:flex;
      align-items:center;
      gap:.45rem;
    }
    .countdown-grid{
      display:grid;
      grid-template-columns:repeat(4, 1fr);
      gap:10px;
    }
    .countdown-box{
      border-radius:14px;
      background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
      border:1px solid rgba(255,255,255,.08);
      text-align:center;
      padding:.85rem .25rem;
    }
    .countdown-box strong{
      display:block;
      font-size:1.45rem;
      line-height:1;
      color:#fff;
      margin-bottom:.2rem;
    }
    .countdown-box span{
      color:var(--muted-2);
      font-size:.78rem;
    }
    .stage-foot{
      color:var(--muted);
      font-size:.93rem;
      display:flex;
      align-items:center;
      gap:.55rem;
    }

    main{padding:10px 0 60px}
    .section{
      padding:54px 0;
      position:relative;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      gap:18px;
      align-items:flex-end;
      margin-bottom:22px;
    }
    .section-title h2{
      margin:0;
      font-size:2rem;
      line-height:1.16;
      letter-spacing:0;
    }
    .section-title p{
      margin:.7rem 0 0;
      color:var(--muted);
      max-width:62ch;
    }
    .section-link{
      flex:0 0 auto;
      display:inline-flex;
      align-items:center;
      gap:.4rem;
      color:#dffcf4;
      padding:.55rem .85rem;
      border-radius:999px;
      border:1px solid rgba(49,208,170,.18);
      background:rgba(49,208,170,.08);
      font-weight:700;
      white-space:nowrap;
    }
    .section-link:hover{
      background:rgba(49,208,170,.12);
      color:#fff;
      transform:translateY(-1px);
    }

    .grid-3{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:16px;
    }
    .grid-4{
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:16px;
    }
    .grid-2{
      display:grid;
      grid-template-columns:repeat(2, minmax(0, 1fr));
      gap:16px;
    }

    .card-ui{
      background:linear-gradient(180deg, rgba(19,36,54,.96), rgba(14,25,38,.96));
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius);
      box-shadow:0 10px 32px rgba(2,8,14,.18);
      overflow:hidden;
      transition:transform var(--speed), box-shadow var(--speed), border-color var(--speed);
    }
    .card-ui:hover{
      transform:translateY(-3px);
      border-color:rgba(49,208,170,.18);
      box-shadow:0 16px 40px rgba(2,8,14,.26);
    }
    .card-body{
      padding:18px;
    }
    .card-topline{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      margin-bottom:10px;
    }
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:.4rem;
      font-size:.8rem;
      padding:.35rem .6rem;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      color:#d7e7f5;
      border:1px solid rgba(255,255,255,.08);
    }
    .badge-hot{
      background:rgba(255,138,101,.12);
      color:#ffd2bf;
      border-color:rgba(255,138,101,.18);
    }
    .card-ui h3{
      margin:0 0 .55rem;
      font-size:1.08rem;
      line-height:1.35;
    }
    .card-ui p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }
    .quote{
      margin-top:14px;
      padding:14px 14px 0;
      border-top:1px solid rgba(255,255,255,.08);
      color:#d8e6f3;
      font-size:.96rem;
    }
    .quote:before{
      content:"“";
      color:var(--brand-3);
      margin-right:.2rem;
    }
    .quote:after{
      content:"”";
      color:var(--brand-3);
    }

    .stat-card{
      padding:20px;
      min-height:150px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .stat-value{
      font-size:2rem;
      font-weight:800;
      line-height:1;
      letter-spacing:0;
      margin-bottom:.4rem;
      color:#fff;
    }
    .stat-desc{
      color:var(--muted);
      font-size:.95rem;
    }
    .stat-foot{
      display:flex;
      align-items:center;
      gap:.45rem;
      color:#dffcf4;
      font-size:.9rem;
      margin-top:12px;
    }

    .compare-wrap{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:16px;
    }
    .compare-col{
      padding:20px;
    }
    .compare-label{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.4rem .7rem;
      border-radius:999px;
      font-weight:700;
      margin-bottom:12px;
      border:1px solid rgba(255,255,255,.08);
    }
    .compare-label.bad{
      background:rgba(255,93,115,.1);
      color:#ffccd2;
      border-color:rgba(255,93,115,.18);
    }
    .compare-label.good{
      background:rgba(49,208,170,.12);
      color:#dffcf4;
      border-color:rgba(49,208,170,.2);
    }
    .compare-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:12px;
    }
    .compare-list li{
      display:flex;
      gap:.7rem;
      align-items:flex-start;
      color:var(--text);
      padding:12px 12px;
      border-radius:14px;
      background:rgba(255,255,255,.035);
      border:1px solid rgba(255,255,255,.06);
    }
    .compare-list i{
      color:var(--brand-3);
      flex:0 0 auto;
      margin-top:.1rem;
    }
    .compare-list span{
      color:var(--muted);
      display:block;
      font-size:.94rem;
      margin-top:.1rem;
    }

    .zone-card{
      padding:22px;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:18px;
      align-items:center;
    }
    .zone-copy h3{
      margin:0 0 .7rem;
      font-size:1.35rem;
    }
    .zone-copy p{
      margin:0;
      color:var(--muted);
    }
    .zone-meta{
      display:flex;
      flex-wrap:wrap;
      gap:.55rem;
      margin:14px 0 0;
    }
    .zone-preview{
      border-radius:18px;
      padding:18px;
      background:
        linear-gradient(135deg, rgba(49,208,170,.12), rgba(255,138,101,.08)),
        linear-gradient(180deg, rgba(17,29,45,.95), rgba(11,20,31,.98));
      border:1px solid rgba(255,255,255,.08);
      min-height:180px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .zone-preview .mini{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      color:#dffcf4;
      font-weight:700;
    }
    .track{
      display:grid;
      gap:10px;
    }
    .track-line{
      height:12px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      overflow:hidden;
      position:relative;
    }
    .track-line::before{
      content:"";
      position:absolute;
      inset:0;
      width:var(--w);
      border-radius:inherit;
      background:linear-gradient(90deg, var(--brand), var(--brand-3));
    }

    .news-wrap{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:16px;
    }
    .news-list{
      display:grid;
      gap:12px;
    }
    .news-item{
      display:flex;
      align-items:flex-start;
      gap:12px;
      padding:14px 16px;
      border-radius:16px;
      background:rgba(255,255,255,.035);
      border:1px solid rgba(255,255,255,.06);
      transition:transform var(--speed), background-color var(--speed), border-color var(--speed);
    }
    .news-item:hover{
      transform:translateX(3px);
      background:rgba(255,255,255,.05);
      border-color:rgba(49,208,170,.16);
    }
    .news-item strong{
      display:block;
      font-size:1rem;
      line-height:1.45;
      margin-bottom:.25rem;
    }
    .news-item p{
      color:var(--muted);
      font-size:.92rem;
      margin:0;
    }
    .news-arrow{
      color:var(--brand-3);
      margin-top:.1rem;
      flex:0 0 auto;
    }
    .news-side{
      padding:20px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height:100%;
    }
    .news-side h3{
      margin:0 0 .75rem;
      font-size:1.18rem;
    }
    .news-side .side-note{
      color:var(--muted);
      margin:0 0 14px;
    }
    .mini-list{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .mini-list li{
      display:flex;
      align-items:flex-start;
      gap:.6rem;
      color:#eaf2ff;
      padding:10px 0;
      border-top:1px solid rgba(255,255,255,.08);
      font-size:.95rem;
    }
    .mini-list li:first-child{border-top:none;padding-top:0}
    .mini-list i{color:var(--brand);margin-top:.2rem}

    .form-grid{
      display:grid;
      grid-template-columns:.95fr 1.05fr;
      gap:16px;
      align-items:stretch;
    }
    .form-panel,.info-panel{
      padding:22px;
    }
    .form-panel h3,.info-panel h3{
      margin:0 0 .7rem;
      font-size:1.25rem;
    }
    .form-panel p,.info-panel p{
      margin:0;
      color:var(--muted);
    }
    .contact-form{
      margin-top:18px;
      display:grid;
      gap:12px;
    }
    .field{
      display:grid;
      gap:.45rem;
    }
    .field label{
      font-weight:700;
      color:#dbe9f7;
      font-size:.94rem;
    }
    .field input,.field textarea{
      width:100%;
      padding:.9rem 1rem;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(8,15,23,.68);
      color:var(--text);
      transition:border-color var(--speed), box-shadow var(--speed), background-color var(--speed);
    }
    .field input::placeholder,.field textarea::placeholder{color:#6e8197}
    .field input:focus,.field textarea:focus{
      border-color:rgba(49,208,170,.3);
      box-shadow:0 0 0 .22rem rgba(49,208,170,.12);
      background:rgba(8,15,23,.82);
      outline:none;
    }
    .field textarea{
      min-height:108px;
      resize:vertical;
    }
    .form-hint{
      color:var(--muted-2);
      font-size:.9rem;
    }
    .form-status{
      display:none;
      margin-top:10px;
      padding:12px 14px;
      border-radius:14px;
      background:rgba(49,208,170,.1);
      border:1px solid rgba(49,208,170,.18);
      color:#dffcf4;
      font-size:.95rem;
    }

    .faq-list{
      display:grid;
      gap:12px;
    }
    details.faq-item{
      background:linear-gradient(180deg, rgba(19,36,54,.96), rgba(14,25,38,.96));
      border:1px solid rgba(255,255,255,.08);
      border-radius:16px;
      overflow:hidden;
    }
    details.faq-item[open]{
      border-color:rgba(49,208,170,.18);
      box-shadow:0 10px 26px rgba(2,8,14,.18);
    }
    details.faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:16px 18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      font-weight:700;
      color:#fff;
    }
    details.faq-item summary::-webkit-details-marker{display:none}
    .faq-answer{
      padding:0 18px 16px;
      color:var(--muted);
      font-size:.95rem;
    }

    .feedback-bar{
      margin-top:16px;
      padding:14px 16px;
      border-radius:16px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      justify-content:space-between;
    }
    .feedback-bar strong{
      color:#fff;
      font-size:1rem;
    }
    .feedback-bar span{
      color:var(--muted);
      font-size:.94rem;
    }

    .site-footer{
      border-top:1px solid rgba(255,255,255,.08);
      background:rgba(6,13,21,.9);
      padding:28px 0 34px;
    }
    .footer-top{
      display:flex;
      justify-content:space-between;
      gap:16px;
      align-items:flex-start;
    }
    .footer-brand{
      max-width:46ch;
    }
    .footer-brand strong{
      display:block;
      font-size:1.08rem;
      margin-bottom:.55rem;
    }
    .footer-brand p{
      color:var(--muted);
      margin:0;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:.55rem;
      justify-content:flex-end;
    }
    .footer-links a{
      padding:.5rem .8rem;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      color:var(--muted);
    }
    .footer-links a:hover{
      color:#fff;
      border-color:rgba(49,208,170,.18);
      background:rgba(49,208,170,.08);
    }
    .copyright{
      margin-top:16px;
      padding-top:16px;
      border-top:1px solid rgba(255,255,255,.08);
      color:var(--muted-2);
      font-size:.92rem;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:space-between;
    }

    .floating-cta{
      position:fixed;
      right:18px;
      bottom:18px;
      z-index:1040;
      display:flex;
      gap:10px;
      align-items:center;
      padding:10px;
      border-radius:20px;
      background:rgba(8,15,23,.78);
      border:1px solid rgba(255,255,255,.09);
      backdrop-filter:blur(16px);
      box-shadow:var(--shadow);
    }

    .section-spacer{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(255,255,255,.12), transparent);
      margin:0;
    }

    @media (max-width: 991.98px){
      .hero-inner,
      .grid-3,
      .grid-4,
      .grid-2,
      .compare-wrap,
      .news-wrap,
      .form-grid,
      .zone-card{
        grid-template-columns:1fr;
      }
      .hero h1{font-size:2.45rem;max-width:none}
      .section-head{
        flex-direction:column;
        align-items:flex-start;
      }
      .nav-cta{
        margin-left:0;
        margin-top:1rem;
      }
      .navbar-collapse{
        margin-top:.75rem;
        padding:1rem;
        border-radius:18px;
        background:rgba(11,20,31,.96);
        border:1px solid rgba(255,255,255,.08);
      }
      .footer-top{
        flex-direction:column;
      }
      .footer-links{
        justify-content:flex-start;
      }
    }

    @media (max-width: 767.98px){
      .hero{
        padding-top:18px;
      }
      .hero-panel{
        border-radius:20px;
      }
      .hero-inner{
        padding:22px 18px 18px;
        gap:18px;
      }
      .hero h1{font-size:2rem}
      .hero p{font-size:.98rem}
      .stage-visual{min-height:250px}
      .countdown-grid{
        grid-template-columns:repeat(2, 1fr);
      }
      .section{
        padding:42px 0;
      }
      .section-title h2{
        font-size:1.6rem;
      }
      .floating-cta{
        left:12px;
        right:12px;
        bottom:12px;
        justify-content:space-between;
      }
      .floating-cta .btn-ui{
        flex:1 1 0;
        padding:.75rem .8rem;
      }
    }

    @media (max-width: 575.98px){
      .container-narrow{
        width:min(var(--container), calc(100% - 22px));
      }
      .brand-name{
        font-size:.98rem;
      }
      .brand-sub{
        display:none;
      }
      .hero h1{font-size:1.78rem}
      .hero-actions{
        flex-direction:column;
      }
      .hero-actions .btn-ui{
        width:100%;
      }
      .tag{
        width:100%;
        justify-content:flex-start;
      }
      .card-body,.compare-col,.zone-card,.form-panel,.info-panel,.news-side,.stat-card,.card-ui .card-body{
        padding:16px;
      }
      .countdown-box strong{
        font-size:1.22rem;
      }
      .copyright{
        flex-direction:column;
      }
    }

/* roulang page: category1 */
:root{
      --bg:#120b1b;
      --bg-2:#1b1028;
      --panel:#241632;
      --panel-soft:#2d1b3f;
      --card:#fffaf4;
      --card-2:#fff3df;
      --text:#fff8ef;
      --text-dark:#27152f;
      --muted:#bdaec9;
      --muted-dark:#6f5c7b;
      --brand:#ff8a3d;
      --brand-2:#ffcf64;
      --accent:#9e6bff;
      --accent-2:#39d0c8;
      --danger:#ff617d;
      --border:rgba(255,255,255,.14);
      --border-dark:rgba(39,21,47,.12);
      --shadow:0 24px 70px rgba(0,0,0,.34);
      --shadow-soft:0 16px 42px rgba(62,31,86,.18);
      --radius-xl:30px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --container:1160px;
      --ease:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 6%, rgba(255,138,61,.25), transparent 32%),
        radial-gradient(circle at 88% 10%, rgba(158,107,255,.28), transparent 30%),
        linear-gradient(180deg,#120b1b 0%,#1b1028 42%,#150d20 100%);
      line-height:1.72;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--brand-2)}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(255,207,100,.55);
      outline-offset:3px;
    }
    .container-narrow{max-width:var(--container)}
    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(18,11,27,.78);
      backdrop-filter:blur(18px);
      border-bottom:1px solid var(--border);
      box-shadow:0 12px 32px rgba(0,0,0,.18);
    }
    .navbar{padding:14px 0}
    .navbar-brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      margin-right:24px;
    }
    .brand-mark{
      width:48px;
      height:48px;
      border-radius:18px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:linear-gradient(135deg,var(--brand),var(--accent));
      box-shadow:0 12px 28px rgba(255,138,61,.26);
      color:#fff;
      font-size:22px;
      flex:0 0 auto;
    }
    .brand-name{
      display:flex;
      flex-direction:column;
      font-weight:900;
      letter-spacing:.01em;
      line-height:1.15;
      font-size:18px;
      color:#fff;
    }
    .brand-sub{
      margin-top:4px;
      font-size:12px;
      color:var(--muted);
      font-weight:600;
      letter-spacing:0;
    }
    .navbar-dark .navbar-nav .nav-link{
      color:#e9def1;
      font-weight:800;
      padding:10px 16px;
      border-radius:999px;
      margin:0 2px;
    }
    .navbar-dark .navbar-nav .nav-link:hover{
      background:rgba(255,255,255,.08);
      color:#fff;
      transform:translateY(-1px);
    }
    .navbar-dark .navbar-nav .nav-link.active{
      background:linear-gradient(135deg,rgba(255,138,61,.22),rgba(158,107,255,.22));
      color:var(--brand-2);
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);
    }
    .navbar-toggler{
      border:1px solid var(--border);
      border-radius:14px;
      padding:9px 11px;
    }
    .nav-cta{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
    }
    .btn-ui{
      border:0;
      border-radius:999px;
      padding:11px 18px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      font-weight:900;
      white-space:nowrap;
      transition:var(--ease);
      cursor:pointer;
      line-height:1.2;
    }
    .btn-ui:hover{transform:translateY(-2px)}
    .btn-ui:active{transform:translateY(0) scale(.98)}
    .btn-brand{
      color:#24112b;
      background:linear-gradient(135deg,var(--brand-2),var(--brand));
      box-shadow:0 14px 34px rgba(255,138,61,.32);
    }
    .btn-brand:hover{color:#1b0f22;box-shadow:0 18px 44px rgba(255,138,61,.42)}
    .btn-soft{
      color:#fff;
      background:rgba(255,255,255,.09);
      border:1px solid var(--border);
    }
    .btn-soft:hover{background:rgba(255,255,255,.14);color:#fff}
    .btn-darkline{
      color:var(--text-dark);
      background:#fff;
      border:1px solid var(--border-dark);
      box-shadow:0 12px 28px rgba(62,31,86,.12);
    }
    .btn-darkline:hover{color:var(--text-dark);box-shadow:0 18px 36px rgba(62,31,86,.2)}
    .floating-cta{
      position:fixed;
      right:22px;
      bottom:22px;
      z-index:999;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .floating-cta a{
      border-radius:999px;
      padding:12px 16px;
      background:linear-gradient(135deg,var(--brand),var(--accent));
      color:#fff;
      font-weight:900;
      box-shadow:0 18px 42px rgba(0,0,0,.35);
      display:flex;
      align-items:center;
      gap:8px;
      border:1px solid rgba(255,255,255,.18);
    }
    .floating-cta a:hover{transform:translateY(-3px);color:#fff}
    .section{padding:86px 0}
    .section-tight{padding:64px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.09);
      border:1px solid var(--border);
      color:var(--brand-2);
      font-size:13px;
      font-weight:900;
      margin-bottom:16px;
    }
    .hero{
      position:relative;
      padding:86px 0 72px;
      overflow:hidden;
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:auto -120px -180px auto;
      width:420px;
      height:420px;
      border-radius:50%;
      background:rgba(57,208,200,.14);
      filter:blur(8px);
      pointer-events:none;
    }
    .hero-title{
      font-size:clamp(34px,5vw,68px);
      line-height:1.04;
      font-weight:950;
      letter-spacing:-.045em;
      margin:0 0 18px;
      max-width:720px;
    }
    .hero-title .shine{
      background:linear-gradient(135deg,var(--brand-2),#fff,var(--accent-2));
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-lead{
      max-width:650px;
      color:#dfd1ea;
      font-size:18px;
      margin:0 0 26px;
    }
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px}
    .age-note{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px 16px;
      border:1px solid rgba(255,207,100,.22);
      background:rgba(255,207,100,.08);
      border-radius:var(--radius-md);
      color:#f5e6c9;
      max-width:680px;
      font-size:14px;
    }
    .coupon-wall{
      position:relative;
      border-radius:var(--radius-xl);
      padding:18px;
      background:linear-gradient(145deg,rgba(255,255,255,.16),rgba(255,255,255,.06));
      border:1px solid var(--border);
      box-shadow:var(--shadow);
    }
    .main-coupon{
      position:relative;
      overflow:hidden;
      color:var(--text-dark);
      border-radius:26px;
      padding:28px;
      background:
        radial-gradient(circle at 0 50%, transparent 0 18px, #fff8ed 19px),
        radial-gradient(circle at 100% 50%, transparent 0 18px, #fff8ed 19px),
        linear-gradient(135deg,#fff8ed,#ffe0a9 60%,#ffc166);
      box-shadow:0 18px 50px rgba(0,0,0,.22);
      min-height:318px;
    }
    .main-coupon:after{
      content:"";
      position:absolute;
      top:26px;
      bottom:26px;
      left:62%;
      border-left:2px dashed rgba(39,21,47,.24);
    }
    .coupon-badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:#fff;
      background:#23132f;
      padding:7px 12px;
      border-radius:999px;
      font-weight:900;
      font-size:13px;
      margin-bottom:18px;
    }
    .coupon-value{
      font-size:56px;
      line-height:1;
      font-weight:950;
      letter-spacing:-.05em;
      margin-bottom:10px;
    }
    .coupon-title{font-size:24px;font-weight:950;margin-bottom:8px}
    .coupon-text{color:#644a72;max-width:350px;margin-bottom:20px}
    .coupon-cut{
      position:absolute;
      right:24px;
      top:50%;
      transform:translateY(-50%);
      width:30%;
      text-align:center;
      z-index:2;
    }
    .coupon-cut strong{display:block;font-size:18px;margin-bottom:10px}
    .mini-coupons{
      margin-top:14px;
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
    }
    .mini-coupon{
      border-radius:20px;
      padding:16px;
      background:rgba(255,255,255,.1);
      border:1px solid var(--border);
      color:#fff;
      display:flex;
      gap:12px;
      align-items:center;
    }
    .mini-coupon i{
      width:40px;height:40px;border-radius:14px;
      display:flex;align-items:center;justify-content:center;
      background:rgba(255,207,100,.16);
      color:var(--brand-2);
      flex:0 0 auto;
    }
    .mini-coupon span{display:block;color:var(--muted);font-size:13px;margin-top:2px}
    .summary-card{
      background:var(--card);
      color:var(--text-dark);
      border-radius:var(--radius-xl);
      padding:30px;
      box-shadow:var(--shadow-soft);
      border:1px solid rgba(255,255,255,.5);
    }
    .summary-title{font-size:32px;font-weight:950;letter-spacing:-.03em;margin-bottom:12px}
    .summary-text{color:var(--muted-dark);margin-bottom:0}
    .side-list{
      display:grid;
      gap:14px;
      margin-top:22px;
    }
    .side-item{
      display:flex;
      gap:14px;
      align-items:flex-start;
      padding:16px;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--border-dark);
    }
    .side-item .num{
      width:34px;height:34px;border-radius:12px;
      display:flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--brand),var(--accent));
      color:#fff;
      font-weight:950;
      flex:0 0 auto;
    }
    .side-item strong{display:block;margin-bottom:3px}
    .side-item p{margin:0;color:var(--muted-dark);font-size:14px}
    .dark-band{
      background:rgba(255,255,255,.055);
      border-top:1px solid var(--border);
      border-bottom:1px solid var(--border);
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      gap:24px;
      align-items:end;
      margin-bottom:30px;
    }
    .section-head h2{
      font-size:clamp(28px,3.2vw,44px);
      font-weight:950;
      letter-spacing:-.035em;
      margin:0;
    }
    .section-head p{max-width:520px;color:var(--muted);margin:0}
    .feature-row{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:24px;
      align-items:stretch;
    }
    .feature-panel{
      background:linear-gradient(145deg,#fffaf4,#fff1dc);
      color:var(--text-dark);
      border-radius:var(--radius-xl);
      padding:30px;
      border:1px solid rgba(255,255,255,.65);
      box-shadow:var(--shadow-soft);
      min-height:100%;
    }
    .feature-panel.highlight{
      background:linear-gradient(145deg,#2b173d,#1b1028);
      color:#fff;
      border:1px solid var(--border);
    }
    .feature-panel h3{font-size:25px;font-weight:950;margin-bottom:12px}
    .feature-panel p{color:var(--muted-dark);margin-bottom:18px}
    .feature-panel.highlight p{color:#d3c5de}
    .tag-list{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      display:inline-flex;align-items:center;gap:7px;
      padding:8px 12px;
      border-radius:999px;
      font-size:13px;
      font-weight:900;
      color:#4a2c59;
      background:#fff;
      border:1px solid var(--border-dark);
    }
    .feature-panel.highlight .tag{
      color:#fff;
      background:rgba(255,255,255,.09);
      border-color:var(--border);
    }
    .rank-list{display:grid;gap:12px;margin-top:18px}
    .rank-item{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      padding:14px 16px;
      border-radius:16px;
      background:rgba(255,255,255,.08);
      border:1px solid var(--border);
    }
    .rank-item strong{font-size:15px}
    .rank-badge{
      color:#23132f;
      background:var(--brand-2);
      border-radius:999px;
      padding:5px 10px;
      font-weight:950;
      font-size:12px;
      white-space:nowrap;
    }
    .proof-grid{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:24px;
    }
    .stat-stack{display:grid;gap:16px}
    .stat-card{
      border-radius:var(--radius-lg);
      padding:24px;
      background:rgba(255,255,255,.09);
      border:1px solid var(--border);
      box-shadow:0 14px 32px rgba(0,0,0,.16);
    }
    .stat-card b{display:block;font-size:34px;line-height:1;font-weight:950;color:var(--brand-2);margin-bottom:8px}
    .stat-card span{color:var(--muted)}
    .timeline{
      border-radius:var(--radius-xl);
      padding:28px;
      background:var(--card);
      color:var(--text-dark);
      box-shadow:var(--shadow-soft);
    }
    .timeline h3{font-weight:950;margin-bottom:20px}
    .timeline-item{
      position:relative;
      padding-left:34px;
      padding-bottom:20px;
      border-left:2px solid rgba(158,107,255,.18);
      margin-left:10px;
    }
    .timeline-item:last-child{padding-bottom:0}
    .timeline-item:before{
      content:"";
      position:absolute;
      left:-9px;
      top:4px;
      width:16px;height:16px;border-radius:50%;
      background:linear-gradient(135deg,var(--brand),var(--accent));
      box-shadow:0 0 0 5px rgba(158,107,255,.12);
    }
    .timeline-item strong{display:block;margin-bottom:4px}
    .timeline-item p{margin:0;color:var(--muted-dark)}
    .price-wrap{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:24px;
      align-items:stretch;
    }
    .price-card{
      color:var(--text-dark);
      background:#fffaf4;
      border-radius:var(--radius-xl);
      padding:30px;
      box-shadow:var(--shadow-soft);
      border:1px solid rgba(255,255,255,.65);
    }
    .price-card.featured{
      background:linear-gradient(145deg,#ffcf64,#ff8a3d);
      transform:translateY(-8px);
    }
    .price-card h3{font-weight:950;font-size:26px;margin-bottom:8px}
    .price-card .price{
      font-size:42px;
      font-weight:950;
      letter-spacing:-.04em;
      margin:16px 0 10px;
    }
    .price-card p,.price-card li{color:#654a72}
    .price-card.featured p,.price-card.featured li{color:#44244d}
    .check-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}
    .check-list li{display:flex;gap:10px;align-items:flex-start}
    .check-list i{color:#1f9f75;margin-top:4px}
    .form-panel{
      border-radius:var(--radius-xl);
      padding:30px;
      background:linear-gradient(145deg,rgba(255,255,255,.14),rgba(255,255,255,.06));
      border:1px solid var(--border);
      box-shadow:var(--shadow);
    }
    .form-control,.form-select{
      border:1px solid rgba(255,255,255,.18);
      background:rgba(255,255,255,.1);
      color:#fff;
      border-radius:16px;
      padding:13px 15px;
    }
    .form-control::placeholder{color:#c9b9d3}
    .form-control:focus,.form-select:focus{
      background:rgba(255,255,255,.13);
      color:#fff;
      border-color:rgba(255,207,100,.65);
      box-shadow:0 0 0 .25rem rgba(255,207,100,.14);
    }
    .form-select option{color:#27152f}
    .form-label{font-weight:900;color:#fff}
    .form-hint{font-size:13px;color:var(--muted);margin-top:10px}
    .alert-soft{
      display:none;
      margin-top:14px;
      border-radius:16px;
      padding:12px 14px;
      background:rgba(57,208,200,.13);
      border:1px solid rgba(57,208,200,.28);
      color:#d8fffb;
    }
    .faq-wrap{
      display:grid;
      grid-template-columns:.82fr 1.18fr;
      gap:28px;
      align-items:start;
    }
    .faq-note{
      position:sticky;
      top:104px;
      border-radius:var(--radius-xl);
      padding:28px;
      background:rgba(255,255,255,.08);
      border:1px solid var(--border);
    }
    .accordion-item{
      background:#fffaf4;
      color:var(--text-dark);
      border:1px solid rgba(39,21,47,.1)!important;
      border-radius:18px!important;
      overflow:hidden;
      margin-bottom:12px;
      box-shadow:0 10px 24px rgba(62,31,86,.09);
    }
    .accordion-button{
      font-weight:950;
      color:var(--text-dark);
      background:#fffaf4;
      padding:18px 20px;
    }
    .accordion-button:not(.collapsed){
      color:var(--text-dark);
      background:#ffe9c4;
      box-shadow:none;
    }
    .accordion-button:focus{box-shadow:0 0 0 .25rem rgba(255,138,61,.16)}
    .accordion-body{color:var(--muted-dark);padding:0 20px 20px}
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:34px;
      padding:42px;
      background:
        radial-gradient(circle at 15% 30%, rgba(255,207,100,.28), transparent 26%),
        linear-gradient(135deg,#2a173b,#140c1f);
      border:1px solid var(--border);
      box-shadow:var(--shadow);
    }
    .cta-box:after{
      content:"";
      position:absolute;
      right:-80px;top:-80px;
      width:220px;height:220px;border-radius:50%;
      background:rgba(158,107,255,.26);
      filter:blur(2px);
    }
    .cta-box h2{font-size:clamp(28px,4vw,46px);font-weight:950;letter-spacing:-.035em;margin-bottom:12px}
    .cta-box p{color:#dacce5;max-width:690px;margin-bottom:22px}
    .site-footer{
      padding:48px 0 34px;
      background:#0d0713;
      border-top:1px solid var(--border);
    }
    .footer-top{
      display:flex;
      justify-content:space-between;
      gap:30px;
      align-items:flex-start;
      padding-bottom:24px;
      border-bottom:1px solid var(--border);
    }
    .footer-brand strong{display:block;font-size:20px;margin-bottom:8px}
    .footer-brand p{max-width:560px;color:var(--muted);margin:0}
    .footer-links{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .footer-links a{
      padding:9px 12px;
      border-radius:999px;
      color:#e9def1;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      font-weight:800;
      font-size:14px;
    }
    .footer-links a:hover{background:rgba(255,255,255,.12);color:var(--brand-2)}
    .copyright{
      padding-top:20px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:#9d8aaa;
      font-size:14px;
    }
    @media (max-width:1024px){
      .coupon-value{font-size:46px}
      .main-coupon:after,.coupon-cut{display:none}
      .coupon-text{max-width:none}
      .feature-row,.proof-grid,.price-wrap,.faq-wrap{grid-template-columns:1fr}
      .faq-note{position:static}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    @media (max-width:991.98px){
      .navbar-collapse{
        padding:16px;
        margin-top:14px;
        border-radius:22px;
        background:rgba(255,255,255,.08);
        border:1px solid var(--border);
      }
      .navbar-dark .navbar-nav .nav-link{margin:4px 0}
      .nav-cta{margin-top:12px}
    }
    @media (max-width:768px){
      .section{padding:66px 0}
      .hero{padding:64px 0 54px}
      .hero-lead{font-size:16px}
      .summary-card,.feature-panel,.timeline,.price-card,.form-panel,.faq-note,.cta-box{padding:24px}
      .mini-coupons{grid-template-columns:1fr}
      .price-card.featured{transform:none}
      .floating-cta{right:14px;bottom:14px}
      .floating-cta a span{display:none}
    }
    @media (max-width:520px){
      .brand-mark{width:42px;height:42px;border-radius:15px}
      .brand-name{font-size:15px;max-width:235px}
      .brand-sub{font-size:11px}
      .hero-actions,.nav-cta{flex-direction:column;align-items:stretch}
      .btn-ui{width:100%}
      .coupon-value{font-size:38px}
      .main-coupon{padding:22px}
      .footer-top{flex-direction:column}
      .footer-links{justify-content:flex-start}
      .copyright{flex-direction:column}
    }