/* roulang page: index */
:root{
      --bg:#0f1216;
      --bg-2:#151a20;
      --surface:#181e25;
      --surface-2:#1d242d;
      --panel:#202833;
      --line:#2b3440;
      --line-2:#384251;
      --text:#ecf2f7;
      --muted:#9aa7b4;
      --soft:#c7d0d9;
      --primary:#42e0c0;
      --primary-2:#27c7aa;
      --accent:#d8a65a;
      --accent-2:#f1c97e;
      --danger:#ff7e7e;
      --shadow:0 18px 40px rgba(0,0,0,.28);
      --shadow-2:0 10px 24px rgba(0,0,0,.22);
      --radius:18px;
      --radius-sm:12px;
      --radius-xs:10px;
      --container:1200px;
      --gap:24px;
      --gap-sm:16px;
      --gap-xs:10px;
      --header-h:78px;
      --topbar-h:38px;
      --transition:.24s ease;
    }
    *{box-sizing:border-box}
    html,body{margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
      background:
        radial-gradient(circle at top left, rgba(66,224,192,.08), transparent 30%),
        radial-gradient(circle at top right, rgba(216,166,90,.06), transparent 28%),
        linear-gradient(180deg, #0d1014 0%, #11151a 35%, #0e1115 100%);
      color:var(--text);
      line-height:1.72;
      letter-spacing:.01em;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none;transition:color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition), opacity var(--transition)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(66,224,192,.22);color:#fff}
    .container{
      width:min(var(--container),calc(100% - 32px));
      margin:0 auto;
    }
    .topbar{
      min-height:var(--topbar-h);
      display:flex;
      align-items:center;
      border-bottom:1px solid rgba(255,255,255,.05);
      background:rgba(10,13,17,.86);
      backdrop-filter:saturate(120%) blur(8px);
      position:relative;
      z-index:12;
    }
    .topbar .container{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      font-size:13px;
      color:var(--muted);
    }
    .topbar strong{
      color:var(--text);
      font-weight:600;
    }
    .topbar a{
      color:var(--primary);
      font-weight:600;
    }
    .topbar a:hover{color:#7bf0db}
    header.site-header{
      position:sticky;
      top:0;
      z-index:20;
      background:rgba(13,16,20,.92);
      backdrop-filter:saturate(120%) blur(10px);
      border-bottom:1px solid rgba(255,255,255,.06);
    }
    .nav-wrap{
      height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .brand-mark{
      width:42px;height:42px;
      border-radius:14px;
      background:
        linear-gradient(145deg, rgba(66,224,192,.2), rgba(66,224,192,.06)),
        linear-gradient(180deg, #18212b, #11161d);
      border:1px solid rgba(66,224,192,.28);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
      display:grid;
      place-items:center;
      position:relative;
      overflow:hidden;
    }
    .brand-mark::before,
    .brand-mark::after{
      content:"";
      position:absolute;
      border-radius:999px;
      background:linear-gradient(180deg, var(--primary), #7cf2de);
      opacity:.95;
    }
    .brand-mark::before{
      width:16px;height:3px;left:7px;top:14px;transform:rotate(45deg);
    }
    .brand-mark::after{
      width:16px;height:3px;right:7px;bottom:14px;transform:rotate(-45deg);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      gap:2px;
    }
    .brand-text strong{
      font-size:15px;
      line-height:1.1;
      letter-spacing:.02em;
    }
    .brand-text span{
      font-size:12px;
      color:var(--muted);
    }
    .nav{
      display:flex;
      align-items:center;
      gap:8px;
      flex:1;
      justify-content:center;
    }
    .nav a{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border-radius:12px;
      color:var(--soft);
      font-size:14px;
      border:1px solid transparent;
    }
    .nav a:hover{
      background:rgba(255,255,255,.04);
      border-color:rgba(255,255,255,.07);
      color:#fff;
    }
    .nav a.active{
      background:rgba(66,224,192,.1);
      border-color:rgba(66,224,192,.25);
      color:#eafffb;
      box-shadow:0 0 0 1px rgba(66,224,192,.03) inset;
    }
    .header-actions{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:max-content;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:0 18px;
      border-radius:14px;
      border:1px solid transparent;
      font-weight:700;
      letter-spacing:.01em;
      transition:transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), color var(--transition), opacity var(--transition);
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-1px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{
      background:linear-gradient(180deg, #50e5c8, #21bfa4);
      color:#04100d;
      box-shadow:0 14px 28px rgba(33,191,164,.22);
    }
    .btn-primary:hover{
      box-shadow:0 16px 28px rgba(33,191,164,.28);
      filter:brightness(1.04);
    }
    .btn-secondary{
      background:rgba(255,255,255,.04);
      border-color:rgba(255,255,255,.09);
      color:#eef5f8;
    }
    .btn-secondary:hover{
      border-color:rgba(66,224,192,.34);
      background:rgba(66,224,192,.08);
    }
    .menu-toggle{
      display:none;
      width:44px;height:44px;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.09);
      background:rgba(255,255,255,.04);
      color:var(--text);
      align-items:center;
      justify-content:center;
      gap:4px;
      flex-direction:column;
      padding:0;
    }
    .menu-toggle span{
      width:18px;
      height:2px;
      background:#e8eef2;
      border-radius:2px;
      display:block;
      transition:transform var(--transition), opacity var(--transition);
    }
    main{display:block}
    .hero{
      position:relative;
      padding:34px 0 28px;
    }
    .hero-shell{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      background:
        linear-gradient(180deg, rgba(10,14,18,.28), rgba(10,14,18,.72)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
    }
    .hero-shell::before{
      content:"";
      position:absolute;inset:0;
      background:
        linear-gradient(120deg, rgba(10,13,17,.86) 0%, rgba(10,13,17,.72) 44%, rgba(10,13,17,.46) 100%);
      pointer-events:none;
    }
    .hero-inner{
      position:relative;
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:30px;
      padding:34px;
      min-height:560px;
      align-items:center;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(66,224,192,.22);
      background:rgba(66,224,192,.08);
      color:#dffdf7;
      font-size:13px;
      font-weight:700;
      width:max-content;
    }
    .eyebrow .dot{
      width:8px;height:8px;border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 4px rgba(66,224,192,.14);
    }
    h1{
      margin:18px 0 14px;
      font-size:clamp(34px, 5vw, 62px);
      line-height:1.08;
      letter-spacing:-.02em;
      max-width:12em;
    }
    .hero p{
      margin:0;
      color:#d6e0e8;
      font-size:16px;
      max-width:56ch;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .hero-meta{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:22px;
    }
    .meta-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:38px;
      padding:0 14px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#eff6fa;
      font-size:13px;
      white-space:nowrap;
    }
    .meta-chip i{
      width:8px;height:8px;border-radius:50%;
      background:var(--accent);
      display:inline-block;
      box-shadow:0 0 0 4px rgba(216,166,90,.14);
    }
    .hero-aside{
      display:grid;
      gap:14px;
      align-content:center;
    }
    .aside-card{
      padding:18px;
      border-radius:18px;
      background:linear-gradient(180deg, rgba(28,35,44,.88), rgba(20,25,31,.92));
      border:1px solid rgba(255,255,255,.07);
      box-shadow:var(--shadow-2);
    }
    .aside-card .label{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#dffdf7;
      font-weight:700;
      font-size:13px;
      margin-bottom:10px;
    }
    .aside-card .label b{
      display:inline-block;
      width:10px;height:10px;border-radius:3px;
      background:linear-gradient(180deg, var(--primary), #8bf0df);
    }
    .aside-card h3{
      margin:0 0 8px;
      font-size:18px;
    }
    .aside-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .aside-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:12px;
    }
    .info-mini{
      padding:16px;
      border-radius:16px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.07);
    }
    .info-mini strong{
      display:block;
      font-size:18px;
      color:#f6fbfd;
      margin-bottom:5px;
    }
    .info-mini span{
      font-size:13px;
      color:var(--muted);
    }
    section{
      padding:18px 0 0;
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:16px;
      margin-bottom:18px;
    }
    .section-head h2{
      margin:0;
      font-size:clamp(22px, 3vw, 32px);
      line-height:1.15;
      letter-spacing:-.01em;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      max-width:58ch;
      font-size:14px;
    }
    .section-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary);
      font-weight:700;
      font-size:14px;
      white-space:nowrap;
    }
    .section-link:hover{color:#90f3e1}
    .card-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .feature-card{
      background:linear-gradient(180deg, rgba(27,34,43,.95), rgba(21,26,33,.96));
      border:1px solid rgba(255,255,255,.07);
      border-radius:20px;
      overflow:hidden;
      box-shadow:var(--shadow-2);
      display:flex;
      flex-direction:column;
      min-height:100%;
      transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    .feature-card:hover{
      transform:translateY(-3px);
      border-color:rgba(66,224,192,.22);
      box-shadow:0 18px 34px rgba(0,0,0,.32);
    }
    .feature-card figure{
      margin:0;
      aspect-ratio: 16 / 10;
      overflow:hidden;
      position:relative;
      background:#0f1318;
    }
    .feature-card figure::after{
      content:"";
      position:absolute;inset:0;
      background:linear-gradient(180deg, rgba(9,12,15,.1), rgba(9,12,15,.4));
    }
    .feature-card img{
      width:100%;
      height:100%;
      object-fit:cover;
      transform:scale(1.01);
      transition:transform var(--transition), filter var(--transition);
      filter:saturate(1.02) contrast(1.02);
    }
    .feature-card:hover img{transform:scale(1.05)}
    .feature-body{
      padding:18px;
      display:flex;
      flex-direction:column;
      gap:12px;
      flex:1;
    }
    .feature-body h3{
      margin:0;
      font-size:18px;
      line-height:1.28;
    }
    .feature-body p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      flex:1;
    }
    .tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      min-height:30px;
      padding:0 11px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#eaf2f8;
      font-size:12px;
    }
    .card-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary);
      font-weight:700;
      font-size:14px;
      margin-top:auto;
    }
    .card-link:hover{color:#9ef6e8}
    .split{
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:18px;
      align-items:stretch;
    }
    .panel{
      background:linear-gradient(180deg, rgba(25,31,39,.95), rgba(18,22,28,.96));
      border:1px solid rgba(255,255,255,.07);
      border-radius:24px;
      overflow:hidden;
      box-shadow:var(--shadow-2);
    }
    .panel-inner{
      padding:24px;
    }
    .panel h3{
      margin:0 0 10px;
      font-size:24px;
      line-height:1.2;
    }
    .panel p{
      margin:0 0 18px;
      color:var(--muted);
    }
    .list{
      display:grid;
      gap:12px;
    }
    .list-item{
      display:flex;
      align-items:flex-start;
      gap:12px;
      padding:14px 14px;
      border-radius:16px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.06);
    }
    .bullet{
      width:10px;height:10px;
      border-radius:50%;
      margin-top:7px;
      background:linear-gradient(180deg, var(--primary), #9bf4e7);
      box-shadow:0 0 0 4px rgba(66,224,192,.12);
      flex:0 0 auto;
    }
    .list-item strong{
      display:block;
      margin-bottom:3px;
      font-size:15px;
    }
    .list-item span{
      display:block;
      color:var(--muted);
      font-size:14px;
    }
    .visual-stack{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
      height:100%;
      padding:14px;
    }
    .visual-card{
      position:relative;
      min-height:280px;
      border-radius:20px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      background:#10151a;
    }
    .visual-card img{
      width:100%;
      height:100%;
      object-fit:cover;
    }
    .visual-card .overlay{
      position:absolute;inset:0;
      background:linear-gradient(180deg, rgba(8,10,14,.08) 0%, rgba(8,10,14,.64) 100%);
      display:flex;
      flex-direction:column;
      justify-content:flex-end;
      padding:18px;
    }
    .visual-card h4{
      margin:0 0 6px;
      font-size:18px;
    }
    .visual-card p{
      margin:0;
      font-size:13px;
      color:#d5e3eb;
    }
    .stats{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:16px;
      margin-top:16px;
    }
    .stat{
      padding:18px;
      border-radius:18px;
      background:linear-gradient(180deg, rgba(30,36,44,.95), rgba(20,25,31,.96));
      border:1px solid rgba(255,255,255,.07);
    }
    .stat strong{
      display:block;
      font-size:26px;
      line-height:1;
      margin-bottom:8px;
      color:#f2f9fc;
    }
    .stat span{
      color:var(--muted);
      font-size:13px;
    }
    .timeline{
      display:grid;
      gap:14px;
    }
    .timeline-item{
      display:grid;
      grid-template-columns:92px 1fr;
      gap:14px;
      align-items:start;
      padding:16px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.06);
      border-radius:18px;
    }
    .time{
      display:inline-flex;
      justify-content:center;
      align-items:center;
      min-height:34px;
      padding:0 12px;
      border-radius:999px;
      background:rgba(66,224,192,.10);
      border:1px solid rgba(66,224,192,.18);
      color:#dffdf7;
      font-size:13px;
      font-weight:700;
      width:max-content;
    }
    .timeline-item h4{
      margin:0 0 6px;
      font-size:16px;
    }
    .timeline-item p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .banner{
      margin-top:18px;
      border-radius:26px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.07);
      background:
        linear-gradient(90deg, rgba(13,16,20,.92), rgba(13,16,20,.72)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      box-shadow:var(--shadow-2);
    }
    .banner-inner{
      padding:28px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .banner h3{
      margin:0 0 8px;
      font-size:24px;
    }
    .banner p{
      margin:0;
      color:#d6e1e9;
      max-width:60ch;
    }
    .notice-box{
      margin-top:18px;
      background:linear-gradient(180deg, rgba(26,32,40,.96), rgba(17,21,27,.96));
      border:1px solid rgba(255,255,255,.07);
      border-radius:24px;
      padding:24px;
      box-shadow:var(--shadow-2);
    }
    .notice-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      margin-bottom:14px;
    }
    .notice-head h3{
      margin:0;
      font-size:24px;
    }
    .notice-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:14px;
    }
    .notice{
      padding:18px;
      border-radius:18px;
      background:rgba(255,255,255,.035);
      border:1px solid rgba(255,255,255,.06);
    }
    .notice .kicker{
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:var(--accent-2);
      font-size:12px;
      font-weight:700;
      text-transform:none;
      margin-bottom:10px;
    }
    .notice .kicker .mini{
      width:8px;height:8px;border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 4px rgba(216,166,90,.12);
    }
    .notice h4{
      margin:0 0 8px;
      font-size:17px;
    }
    .notice p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .faq{
      display:grid;
      gap:12px;
    }
    .faq-item{
      border:1px solid rgba(255,255,255,.07);
      background:linear-gradient(180deg, rgba(25,31,39,.95), rgba(18,22,28,.97));
      border-radius:18px;
      overflow:hidden;
    }
    .faq-question{
      width:100%;
      border:0;
      background:transparent;
      color:var(--text);
      text-align:left;
      padding:18px 18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      min-height:64px;
    }
    .faq-question strong{
      font-size:16px;
      line-height:1.4;
    }
    .faq-question .icon{
      width:28px;
      height:28px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.08);
      display:grid;
      place-items:center;
      color:var(--primary);
      flex:0 0 auto;
      transition:transform var(--transition), background var(--transition);
    }
    .faq-item.open .faq-question .icon{
      background:rgba(66,224,192,.1);
      transform:rotate(45deg);
    }
    .faq-answer{
      display:none;
      padding:0 18px 18px;
      color:var(--muted);
      font-size:14px;
    }
    .faq-item.open .faq-answer{display:block}
    .cta{
      margin:18px 0 10px;
    }
    .cta-box{
      border-radius:28px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.07);
      background:
        linear-gradient(90deg, rgba(10,14,17,.92), rgba(10,14,17,.72)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .cta-inner{
      padding:30px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .cta h3{
      margin:0 0 8px;
      font-size:28px;
    }
    .cta p{
      margin:0;
      color:#d8e3ea;
      max-width:60ch;
    }
    .footer{
      margin-top:24px;
      border-top:1px solid rgba(255,255,255,.07);
      background:rgba(8,10,13,.96);
    }
    .footer-inner{
      padding:30px 0 22px;
      display:grid;
      gap:22px;
    }
    .footer-top{
      display:grid;
      grid-template-columns:1.1fr .9fr .8fr;
      gap:20px;
      align-items:start;
    }
    .footer h4{
      margin:0 0 12px;
      font-size:16px;
    }
    .footer p, .footer li, .footer a{
      color:var(--muted);
      font-size:14px;
    }
    .footer a:hover{color:#fff}
    .footer ul{
      margin:0;padding:0;list-style:none;
      display:grid;
      gap:10px;
    }
    .footer-brand p{
      max-width:38ch;
      margin:12px 0 0;
    }
    .footer-meta{
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.06);
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:10px;
      color:#95a2af;
      font-size:13px;
    }
    .footer-meta a{color:#b8c6d1}
    .footer-meta a:hover{color:#fff}
    .sr-only{
      position:absolute !important;
      width:1px;height:1px;
      padding:0;margin:-1px;
      overflow:hidden;clip:rect(0,0,0,0);
      white-space:nowrap;border:0;
    }
    .focusable:focus,
    .btn:focus,
    .nav a:focus,
    .menu-toggle:focus,
    .faq-question:focus{
      outline:2px solid rgba(66,224,192,.75);
      outline-offset:2px;
    }
    @media (max-width: 1120px){
      .hero-inner{grid-template-columns:1fr;min-height:auto}
      .hero-aside{grid-template-columns:repeat(2,1fr)}
      .card-grid{grid-template-columns:repeat(2,1fr)}
      .split{grid-template-columns:1fr}
      .notice-grid{grid-template-columns:1fr}
      .footer-top{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 920px){
      .nav{gap:4px}
      .nav a{padding:10px 11px;font-size:13px}
      .header-actions .btn-secondary{display:none}
      .visual-stack{grid-template-columns:1fr}
      .stats{grid-template-columns:1fr}
      .banner-inner,.cta-inner,.section-head,.notice-head{flex-direction:column;align-items:flex-start}
      .timeline-item{grid-template-columns:1fr}
      .footer-top{grid-template-columns:1fr}
    }
    @media (max-width: 768px){
      .topbar .container{font-size:12px;gap:10px}
      .nav-wrap{height:auto;padding:12px 0}
      .menu-toggle{display:flex}
      .nav{
        position:absolute;
        left:16px;right:16px;top:calc(var(--header-h) - 2px);
        display:none;
        flex-direction:column;
        align-items:stretch;
        justify-content:flex-start;
        gap:6px;
        padding:12px;
        border-radius:18px;
        background:rgba(15,18,22,.98);
        border:1px solid rgba(255,255,255,.08);
        box-shadow:var(--shadow);
      }
      .nav.open{display:flex}
      .nav a{justify-content:flex-start}
      .header-actions .btn-primary{display:none}
      .hero{padding:20px 0}
      .hero-shell{border-radius:22px}
      .hero-inner{padding:22px}
      .hero-aside{grid-template-columns:1fr}
      .card-grid{grid-template-columns:1fr}
      .banner-inner,.cta-inner{padding:22px}
      .section-head h2{font-size:24px}
      .notice-box,.panel-inner{padding:20px}
      .footer-meta{flex-direction:column}
    }
    @media (max-width: 520px){
      .container{width:min(var(--container),calc(100% - 22px))}
      h1{font-size:clamp(30px, 9vw, 42px)}
      .hero p,.cta p,.banner p{font-size:14px}
      .btn{width:100%}
      .hero-actions{flex-direction:column}
      .hero-meta{gap:8px}
      .meta-chip{width:100%;justify-content:center}
      .aside-grid{grid-template-columns:1fr}
      .feature-body h3,.aside-card h3,.panel h3,.notice h4,.cta h3,.banner h3{font-size:18px}
      .faq-question strong{font-size:15px}
      .nav{left:11px;right:11px}
    }

/* roulang page: category1 */
:root{
      --bg:#0b0e11;
      --bg-2:#101418;
      --bg-3:#151a20;
      --card:#141a20;
      --card-2:#10151a;
      --line:#27313a;
      --line-2:#32404b;
      --text:#e8eef3;
      --muted:#9aa7b2;
      --soft:#6f7d88;
      --brand:#22d3c5;
      --brand-2:#7af0a9;
      --accent:#d9a24a;
      --accent-2:#f0c36f;
      --danger:#ff8b6e;
      --shadow:0 18px 36px rgba(0,0,0,.28);
      --shadow-soft:0 10px 24px rgba(0,0,0,.18);
      --radius:18px;
      --radius-sm:12px;
      --radius-xs:10px;
      --container:1180px;
      --gap:24px;
      --gap-sm:16px;
      --gap-xs:10px;
      --transition:.22s ease;
    }
    *{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 CJK SC",Arial,sans-serif;
      background:
        radial-gradient(1200px 800px at 20% -10%, rgba(34,211,197,.12), transparent 60%),
        radial-gradient(900px 600px at 100% 0%, rgba(217,162,74,.08), transparent 50%),
        linear-gradient(180deg, #0a0d10 0%, #0c1014 42%, #0b0e11 100%);
      color:var(--text);
      line-height:1.7;
      letter-spacing:.2px;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea{font:inherit}
    button{border:0;background:none;color:inherit}
    ::selection{background:rgba(34,211,197,.24);color:#fff}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .skip{
      position:absolute;left:-999px;top:12px;
      background:#fff;color:#000;padding:10px 14px;border-radius:10px;z-index:1000
    }
    .skip:focus{left:12px}
    .topbar{
      background:linear-gradient(90deg, rgba(34,211,197,.12), rgba(217,162,74,.08));
      border-bottom:1px solid rgba(255,255,255,.06);
      color:#d8e3ea;
      font-size:13px;
    }
    .topbar .container{
      min-height:42px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:8px 0;
    }
    .topbar strong{
      color:#fff;
      font-weight:600;
    }
    .topbar .tip{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;
    }
    .topbar .pill{
      display:inline-flex;align-items:center;gap:6px;
      padding:5px 10px;
      border:1px solid rgba(255,255,255,.12);
      border-radius:999px;
      background:rgba(255,255,255,.04);
      color:#cfe7e3;
    }
    .header{
      position:sticky;top:0;z-index:100;
      backdrop-filter:saturate(160%) blur(14px);
      background:rgba(11,14,17,.78);
      border-bottom:1px solid rgba(255,255,255,.06);
    }
    .header-inner{
      min-height:74px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:12px 0;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      width:44px;height:44px;flex:0 0 44px;
      border-radius:14px;
      background:
        linear-gradient(145deg, rgba(34,211,197,.95), rgba(34,211,197,.35)),
        linear-gradient(315deg, rgba(255,255,255,.22), rgba(255,255,255,0));
      position:relative;
      box-shadow:0 12px 26px rgba(34,211,197,.16);
      border:1px solid rgba(255,255,255,.12);
    }
    .brand-mark::before,
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:10px;
      border-radius:10px;
      border:2px solid rgba(11,14,17,.75);
      transform:skew(-8deg);
    }
    .brand-mark::after{
      inset:14px 8px 8px 14px;
      border-color:rgba(11,14,17,.52);
      transform:skew(8deg);
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
    .brand-text strong{
      font-size:15px;
      letter-spacing:.4px;
      white-space:nowrap;
    }
    .brand-text span{
      font-size:12px;
      color:var(--muted);
      margin-top:4px;
      white-space:nowrap;
    }
    .nav{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
      justify-content:center;
    }
    .nav a{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:42px;
      padding:0 16px;
      color:#d7e0e8;
      border-radius:999px;
      transition:background var(--transition), color var(--transition), transform var(--transition);
      border:1px solid transparent;
      white-space:nowrap;
    }
    .nav a:hover,
    .nav a:focus-visible{
      color:#fff;
      background:rgba(255,255,255,.05);
      border-color:rgba(255,255,255,.08);
      outline:none;
    }
    .nav a.active{
      color:#081114;
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      box-shadow:0 8px 20px rgba(34,211,197,.16);
      font-weight:700;
    }
    .header-actions{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:0 16px;
      border-radius:14px;
      border:1px solid transparent;
      transition:transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), color var(--transition);
      cursor:pointer;
      user-select:none;
      white-space:nowrap;
    }
    .btn:hover,
    .btn:focus-visible{
      transform:translateY(-1px);
      outline:none;
    }
    .btn-primary{
      background:linear-gradient(135deg, var(--brand), #45e3d6);
      color:#061014;
      box-shadow:0 14px 26px rgba(34,211,197,.16);
      font-weight:700;
    }
    .btn-primary:hover,
    .btn-primary:focus-visible{
      box-shadow:0 16px 28px rgba(34,211,197,.22);
    }
    .btn-secondary{
      background:rgba(255,255,255,.03);
      border-color:rgba(255,255,255,.12);
      color:#e8eef3;
    }
    .btn-secondary:hover,
    .btn-secondary:focus-visible{
      border-color:rgba(34,211,197,.42);
      background:rgba(34,211,197,.08);
    }
    .btn-ghost{
      color:#d7e0e8;
      border-color:rgba(255,255,255,.1);
      background:rgba(255,255,255,.02);
    }
    .btn-ghost:hover,
    .btn-ghost:focus-visible{
      border-color:rgba(217,162,74,.36);
      background:rgba(217,162,74,.08);
      color:#fff;
    }
    .hero{
      position:relative;
      overflow:hidden;
      padding:28px 0 10px;
    }
    .hero-panel{
      position:relative;
      border:1px solid rgba(255,255,255,.08);
      border-radius:28px;
      overflow:hidden;
      box-shadow:var(--shadow);
      background:
        linear-gradient(180deg, rgba(8,11,14,.28), rgba(8,11,14,.82)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      min-height:560px;
    }
    .hero-panel::before{
      content:"";
      position:absolute;inset:0;
      background:
        radial-gradient(900px 360px at 20% 16%, rgba(34,211,197,.20), transparent 52%),
        radial-gradient(650px 360px at 88% 26%, rgba(217,162,74,.12), transparent 50%),
        linear-gradient(180deg, rgba(11,14,17,.22), rgba(11,14,17,.84));
    }
    .hero-inner{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.35fr .85fr;
      gap:28px;
      align-items:stretch;
      padding:34px;
    }
    .crumbs{
      display:flex;align-items:center;gap:8px;flex-wrap:wrap;
      color:#c2d1db;font-size:13px;
      margin-bottom:18px;
    }
    .crumbs a{color:#dce8ef}
    .crumbs span{color:#7f919e}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      border:1px solid rgba(34,211,197,.24);
      background:rgba(34,211,197,.08);
      color:#c9f4ef;
      font-size:13px;
      margin-bottom:16px;
    }
    .eyebrow i{
      width:8px;height:8px;border-radius:999px;background:var(--brand);
      box-shadow:0 0 0 4px rgba(34,211,197,.12);
      display:inline-block;
    }
    .hero h1{
      margin:0;
      font-size:clamp(32px, 4.6vw, 58px);
      line-height:1.08;
      letter-spacing:.2px;
      max-width:12ch;
    }
    .hero p{
      margin:18px 0 0;
      color:#d7e2e9;
      font-size:16px;
      max-width:56ch;
    }
    .hero-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      margin-top:26px;
    }
    .hero-meta{
      display:grid;
      grid-template-columns:repeat(2, minmax(0, 1fr));
      gap:14px;
      margin-top:26px;
      max-width:620px;
    }
    .meta-card{
      padding:16px;
      border-radius:18px;
      background:rgba(8,11,14,.46);
      border:1px solid rgba(255,255,255,.08);
      backdrop-filter:blur(8px);
      box-shadow:var(--shadow-soft);
    }
    .meta-card .k{
      display:block;
      font-size:13px;
      color:#9fc0bc;
      margin-bottom:8px;
    }
    .meta-card strong{
      display:block;
      font-size:18px;
      color:#fff;
      margin-bottom:6px;
    }
    .meta-card p{
      margin:0;
      font-size:13px;
      color:#c6d4dd;
    }
    .hero-side{
      display:grid;
      gap:14px;
      align-content:start;
    }
    .hero-side .info{
      padding:18px;
      border-radius:20px;
      background:rgba(15,19,23,.72);
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow-soft);
      backdrop-filter:blur(10px);
    }
    .hero-side .info h3{
      margin:0 0 8px;
      font-size:17px;
      color:#fff;
    }
    .hero-side .info p{
      margin:0;
      color:#c7d2db;
      font-size:14px;
    }
    .hero-side .icon{
      width:42px;height:42px;border-radius:14px;
      display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(34,211,197,.18), rgba(217,162,74,.14));
      border:1px solid rgba(255,255,255,.08);
      color:#fff;
      margin-bottom:12px;
      font-size:18px;
    }
    .section{
      padding:34px 0 8px;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:end;
      gap:18px;
      margin-bottom:18px;
      flex-wrap:wrap;
    }
    .section-title{
      margin:0;
      font-size:clamp(24px, 3vw, 34px);
      line-height:1.15;
    }
    .section-sub{
      margin:8px 0 0;
      color:var(--muted);
      max-width:62ch;
      font-size:15px;
    }
    .section-link{
      color:#d6ece8;
      display:inline-flex;
      gap:8px;
      align-items:center;
      padding:10px 12px;
      border-radius:12px;
      border:1px solid rgba(255,255,255,.09);
      background:rgba(255,255,255,.03);
    }
    .section-link:hover,
    .section-link:focus-visible{
      border-color:rgba(34,211,197,.36);
      background:rgba(34,211,197,.08);
      outline:none;
    }
    .filter-bar{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      margin:16px 0 22px;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:38px;
      padding:0 14px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.1);
      color:#d7e3ea;
      background:rgba(255,255,255,.03);
      cursor:pointer;
      transition:background var(--transition), border-color var(--transition), transform var(--transition), color var(--transition);
    }
    .chip:hover,
    .chip:focus-visible{
      outline:none;
      transform:translateY(-1px);
      border-color:rgba(34,211,197,.34);
      background:rgba(34,211,197,.08);
    }
    .chip.active{
      border-color:rgba(34,211,197,.44);
      background:rgba(34,211,197,.12);
      color:#effffb;
      box-shadow:0 10px 20px rgba(34,211,197,.08);
    }
    .grid-3{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:18px;
    }
    .card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius);
      background:linear-gradient(180deg, rgba(20,26,32,.96), rgba(15,19,23,.98));
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow-soft);
      transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    .card:hover{
      transform:translateY(-3px);
      border-color:rgba(34,211,197,.24);
      box-shadow:0 18px 32px rgba(0,0,0,.26);
    }
    .card .cover{
      aspect-ratio:16 / 10;
      overflow:hidden;
      background:#0d1116;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .card .cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      filter:saturate(.96) contrast(1.02);
      transition:transform .35s ease;
    }
    .card:hover .cover img{transform:scale(1.04)}
    .card .body{
      padding:18px;
    }
    .tag-row{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
      margin-bottom:12px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      min-height:28px;
      padding:0 10px;
      border-radius:999px;
      font-size:12px;
      color:#c9f4ef;
      background:rgba(34,211,197,.08);
      border:1px solid rgba(34,211,197,.18);
    }
    .tag.alt{
      color:#ffe7be;
      background:rgba(217,162,74,.09);
      border-color:rgba(217,162,74,.18);
    }
    .card h3{
      margin:0;
      font-size:20px;
      line-height:1.25;
      color:#fff;
    }
    .card p{
      margin:10px 0 0;
      color:#c8d4dd;
      font-size:14px;
    }
    .card .action{
      margin-top:16px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
    }
    .mini-link{
      color:#dff7f3;
      display:inline-flex;
      align-items:center;
      gap:6px;
      font-weight:600;
    }
    .mini-link span{
      transition:transform var(--transition);
      display:inline-block;
    }
    .card:hover .mini-link span{transform:translateX(2px)}
    .feature-wrap{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
      align-items:start;
    }
    .panel{
      border-radius:24px;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(16,20,24,.92);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .panel-head{
      padding:20px 20px 0;
    }
    .panel-head h3{
      margin:0;
      font-size:22px;
      line-height:1.2;
    }
    .panel-head p{
      margin:10px 0 0;
      color:var(--muted);
      font-size:14px;
    }
    .steps{
      padding:20px;
      display:grid;
      gap:14px;
    }
    .step{
      display:flex;
      gap:14px;
      padding:16px;
      border-radius:18px;
      background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));
      border:1px solid rgba(255,255,255,.06);
    }
    .step-num{
      flex:0 0 40px;
      width:40px;height:40px;border-radius:14px;
      display:grid;place-items:center;
      font-weight:700;
      color:#071114;
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      box-shadow:0 8px 18px rgba(34,211,197,.14);
    }
    .step h4{
      margin:0;
      font-size:16px;
      color:#fff;
    }
    .step p{
      margin:6px 0 0;
      font-size:14px;
      color:#c7d2db;
    }
    .notice-list{
      padding:20px;
      display:grid;
      gap:12px;
    }
    .notice-item{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px 14px 14px 0;
      border-bottom:1px solid rgba(255,255,255,.06);
    }
    .notice-item:last-child{border-bottom:0;padding-bottom:0}
    .notice-dot{
      width:11px;height:11px;border-radius:999px;
      margin-top:6px;
      background:linear-gradient(135deg, var(--brand), var(--accent));
      box-shadow:0 0 0 5px rgba(34,211,197,.08);
      flex:0 0 auto;
    }
    .notice-item h4{
      margin:0;
      font-size:16px;
    }
    .notice-item p{
      margin:6px 0 0;
      color:#c6d2db;
      font-size:14px;
    }
    .notice-item .meta{
      margin-top:8px;
      color:#8ea0aa;
      font-size:12px;
    }
    .timeline{
      display:grid;
      gap:14px;
    }
    .timeline-item{
      display:grid;
      grid-template-columns:auto 1fr;
      gap:14px;
      align-items:flex-start;
      padding:16px 18px;
      border-radius:18px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.06);
    }
    .timeline-time{
      min-width:84px;
      color:#c7d8e0;
      font-weight:700;
      font-size:13px;
      padding-top:2px;
    }
    .timeline-item h4{
      margin:0;
      font-size:16px;
    }
    .timeline-item p{
      margin:6px 0 0;
      color:#c4d0d8;
      font-size:14px;
    }
    .faq{
      display:grid;
      gap:12px;
    }
    .faq-item{
      border-radius:18px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(16,20,24,.92);
      box-shadow:var(--shadow-soft);
    }
    .faq-q{
      width:100%;
      text-align:left;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      color:#f0f6fa;
      cursor:pointer;
      transition:background var(--transition), color var(--transition);
      font-weight:700;
      font-size:16px;
    }
    .faq-q:hover,
    .faq-q:focus-visible{
      outline:none;
      background:rgba(255,255,255,.03);
    }
    .faq-icon{
      width:28px;height:28px;border-radius:999px;
      display:grid;place-items:center;
      flex:0 0 auto;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:#d8e8ef;
      transition:transform var(--transition), background var(--transition);
    }
    .faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(34,211,197,.12)}
    .faq-a{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s ease;
      border-top:1px solid rgba(255,255,255,.06);
    }
    .faq-a p{
      margin:0;
      padding:16px 20px 20px;
      color:#c8d4dd;
      font-size:14px;
    }
    .cta{
      padding:34px 0 60px;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      padding:28px;
      border:1px solid rgba(255,255,255,.08);
      background:
        linear-gradient(135deg, rgba(34,211,197,.12), rgba(217,162,74,.08)),
        linear-gradient(180deg, rgba(18,22,27,.96), rgba(13,17,21,.98));
      box-shadow:var(--shadow);
    }
    .cta-box::after{
      content:"";
      position:absolute;
      inset:auto -10% -30% auto;
      width:340px;height:340px;
      background:radial-gradient(circle, rgba(34,211,197,.16), transparent 65%);
      pointer-events:none;
    }
    .cta-grid{
      position:relative;
      z-index:1;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      flex-wrap:wrap;
    }
    .cta h2{
      margin:0;
      font-size:clamp(24px, 3vw, 36px);
      line-height:1.15;
    }
    .cta p{
      margin:10px 0 0;
      color:#c7d4dd;
      max-width:58ch;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
    }
    .footer{
      margin-top:10px;
      background:#090c0f;
      border-top:1px solid rgba(255,255,255,.06);
      color:#d7e2e9;
    }
    .footer-inner{
      padding:34px 0 24px;
    }
    .footer-top{
      display:grid;
      grid-template-columns:1.2fr .7fr .9fr;
      gap:24px;
      align-items:start;
    }
    .footer-brand p{
      margin:16px 0 0;
      color:#94a4af;
      max-width:34ch;
      font-size:14px;
    }
    .footer h4{
      margin:0 0 14px;
      font-size:15px;
      color:#fff;
    }
    .footer ul{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .footer a{
      color:#d7e3ea;
      transition:color var(--transition), opacity var(--transition);
    }
    .footer a:hover,
    .footer a:focus-visible{
      color:#fff;
      opacity:.92;
      outline:none;
    }
    .footer-meta{
      margin-top:24px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.06);
      display:flex;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
      color:#91a0ab;
      font-size:13px;
    }
    .focusable:focus-visible{
      outline:2px solid rgba(34,211,197,.62);
      outline-offset:2px;
    }
    @media (max-width: 1080px){
      .hero-inner,
      .feature-wrap,
      .footer-top{
        grid-template-columns:1fr;
      }
      .hero-panel{min-height:auto}
      .grid-3{
        grid-template-columns:repeat(2, minmax(0, 1fr));
      }
    }
    @media (max-width: 820px){
      .header-inner{
        flex-wrap:wrap;
        justify-content:center;
      }
      .header-actions{
        width:100%;
        justify-content:center;
      }
      .hero-inner{
        padding:24px;
      }
      .hero h1{
        max-width:100%;
      }
      .hero-meta{
        grid-template-columns:1fr;
      }
      .section-head{
        align-items:flex-start;
      }
      .grid-3{
        grid-template-columns:1fr;
      }
      .timeline-item{
        grid-template-columns:1fr;
      }
      .timeline-time{
        min-width:0;
      }
    }
    @media (max-width: 560px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .topbar .container{
        flex-direction:column;
        align-items:flex-start;
      }
      .nav{
        width:100%;
        justify-content:flex-start;
        overflow:auto;
        padding-bottom:4px;
        scrollbar-width:none;
      }
      .nav::-webkit-scrollbar{display:none}
      .brand-text strong{font-size:14px}
      .brand-mark{width:40px;height:40px;border-radius:12px}
      .hero{
        padding-top:20px;
      }
      .hero-panel{
        border-radius:22px;
      }
      .hero-inner{
        padding:20px;
      }
      .hero p,
      .section-sub,
      .cta p{
        font-size:14px;
      }
      .hero-actions,
      .cta-actions,
      .header-actions{
        width:100%;
      }
      .btn{
        flex:1 1 auto;
      }
      .cta-box{
        padding:20px;
        border-radius:22px;
      }
      .faq-q{
        font-size:15px;
        padding:16px;
      }
      .faq-a p{
        padding:0 16px 16px;
      }
      .card .body,
      .panel-head,
      .steps,
      .notice-list{
        padding-left:16px;
        padding-right:16px;
      }
      .section{
        padding-top:28px;
      }
      .footer-inner{
        padding:28px 0 20px;
      }
    }