/* roulang page: index */
:root{
      --bg:#08101f;
      --bg-2:#0d1730;
      --panel:rgba(15,24,46,.78);
      --panel-2:rgba(10,18,34,.9);
      --line:rgba(255,255,255,.10);
      --line-2:rgba(255,255,255,.14);
      --text:#edf2ff;
      --muted:#9aa8c7;
      --muted-2:#7f8bb0;
      --brand:#7c5cff;
      --brand-2:#27d7c4;
      --brand-3:#ff7ab6;
      --warning:#ffcc66;
      --success:#5be38f;
      --shadow:0 18px 45px rgba(0,0,0,.35);
      --shadow-soft:0 10px 28px rgba(0,0,0,.22);
      --radius:22px;
      --radius-sm:14px;
      --radius-xs:10px;
      --container:1180px;
      --gap:24px;
      --gap-sm:16px;
      --transition:all .24s ease;
      --focus:0 0 0 3px rgba(39,215,196,.24),0 0 0 1px rgba(39,215,196,.45) inset;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Segoe UI,Roboto,Helvetica,Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(124,92,255,.22), transparent 26%),
        radial-gradient(circle at top right, rgba(39,215,196,.16), transparent 28%),
        linear-gradient(180deg, #07101f 0%, #08101f 42%, #0a1326 100%);
      line-height:1.7;
      overflow-x:hidden;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none;transition:var(--transition)}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    ::selection{background:rgba(124,92,255,.35);color:#fff}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .skip-link{
      position:absolute;
      left:-9999px;
      top:8px;
      z-index:1000;
      background:#fff;
      color:#000;
      padding:10px 14px;
      border-radius:12px;
    }
    .skip-link:focus{left:16px;outline:none}
    .topbar{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:blur(20px);
      background:linear-gradient(180deg, rgba(6,12,24,.88), rgba(6,12,24,.62));
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .nav{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      min-height:78px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:14px;
      min-width:0;
    }
    .brand-mark{
      width:44px;height:44px;
      border-radius:14px;
      background:
        linear-gradient(135deg, rgba(124,92,255,1), rgba(39,215,196,1));
      box-shadow:0 12px 24px rgba(124,92,255,.22);
      position:relative;
      overflow:hidden;
      flex:0 0 auto;
    }
    .brand-mark:before,.brand-mark:after{
      content:"";
      position:absolute;
      inset:auto;
      border-radius:999px;
      background:rgba(255,255,255,.4);
    }
    .brand-mark:before{width:18px;height:18px;left:9px;top:11px;filter:blur(.2px)}
    .brand-mark:after{width:8px;height:8px;right:11px;bottom:11px;background:rgba(255,255,255,.65)}
    .brand-text{
      min-width:0;
    }
    .brand-text strong{
      display:block;
      font-size:1.02rem;
      line-height:1.15;
      letter-spacing:.2px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-text span{
      display:block;
      color:var(--muted);
      font-size:.86rem;
      margin-top:2px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:14px;
      flex-wrap:wrap;
    }
    .nav-links a{
      position:relative;
      padding:10px 14px;
      border-radius:999px;
      color:var(--muted);
      font-weight:600;
      font-size:.95rem;
    }
    .nav-links a:hover,
    .nav-links a:focus{
      color:#fff;
      background:rgba(255,255,255,.06);
      outline:none;
    }
    .nav-links a.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(124,92,255,.2), rgba(39,215,196,.18));
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
    }
    .nav-cta{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:46px;
      padding:0 18px;
      border-radius:999px;
      font-weight:700;
      letter-spacing:.1px;
      transition:var(--transition);
      white-space:nowrap;
    }
    .btn:focus{outline:none;box-shadow:var(--focus)}
    .btn-primary{
      color:#07101f;
      background:linear-gradient(135deg, #7cf2e6, #fff08c);
      box-shadow:0 16px 32px rgba(39,215,196,.18);
    }
    .btn-primary:hover{transform:translateY(-1px);filter:saturate(1.08)}
    .btn-secondary{
      color:#fff;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.1);
    }
    .btn-secondary:hover{
      background:rgba(255,255,255,.11);
      border-color:rgba(255,255,255,.18);
      transform:translateY(-1px);
    }
    .menu-toggle{
      display:none;
      width:46px;height:46px;
      border-radius:14px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.1);
      color:#fff;
      align-items:center;
      justify-content:center;
      gap:4px;
      flex-direction:column;
    }
    .menu-toggle span{
      width:18px;height:2px;background:#fff;border-radius:999px;display:block;
    }
    .hero{
      position:relative;
      padding:30px 0 12px;
    }
    .hero-shell{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.1);
      border-radius:calc(var(--radius) + 8px);
      background:
        linear-gradient(135deg, rgba(6,11,23,.86), rgba(13,23,48,.75)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .hero-shell:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 20% 20%, rgba(124,92,255,.26), transparent 26%),
        radial-gradient(circle at 78% 22%, rgba(39,215,196,.18), transparent 23%),
        linear-gradient(180deg, rgba(8,16,31,.04), rgba(8,16,31,.44));
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:1.12fr .88fr;
      gap:28px;
      align-items:stretch;
      padding:34px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      color:#fff;
      border:1px solid rgba(255,255,255,.10);
      font-size:.88rem;
      font-weight:700;
      letter-spacing:.2px;
    }
    .eyebrow i{
      width:8px;height:8px;border-radius:999px;background:var(--success);display:inline-block;box-shadow:0 0 0 6px rgba(91,227,143,.12);
    }
    .hero h1{
      margin:18px 0 14px;
      font-size:clamp(2rem, 4vw, 4.15rem);
      line-height:1.08;
      letter-spacing:-.02em;
      max-width:12ch;
    }
    .hero p{
      margin:0;
      color:#d9e1f6;
      font-size:1.04rem;
      max-width:58ch;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .hero-metrics{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
      margin-top:24px;
    }
    .metric{
      padding:16px 16px 15px;
      border-radius:18px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.09);
      backdrop-filter:blur(12px);
    }
    .metric strong{
      display:block;
      font-size:1.24rem;
      line-height:1.2;
      margin-bottom:4px;
      color:#fff;
    }
    .metric span{
      color:var(--muted);
      font-size:.92rem;
    }
    .hero-card{
      display:flex;
      flex-direction:column;
      gap:14px;
      min-height:100%;
      padding:16px;
      border-radius:24px;
      background:rgba(8,16,31,.54);
      border:1px solid rgba(255,255,255,.08);
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.03);
    }
    .hero-cover{
      position:relative;
      overflow:hidden;
      border-radius:20px;
      min-height:250px;
      background:#16233f;
      border:1px solid rgba(255,255,255,.08);
    }
    .hero-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      opacity:.95;
      transform:scale(1.02);
    }
    .hero-cover .overlay{
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, transparent 0%, rgba(8,16,31,.18) 50%, rgba(8,16,31,.86) 100%);
    }
    .hero-cover .caption{
      position:absolute;
      left:16px;
      right:16px;
      bottom:16px;
      display:flex;
      flex-direction:column;
      gap:8px;
    }
    .caption .tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 11px;
      border-radius:999px;
      font-size:.84rem;
      color:#fff;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.08);
    }
    .badge.brand{
      background:linear-gradient(135deg, rgba(124,92,255,.9), rgba(39,215,196,.82));
      border-color:transparent;
      color:#07101f;
      font-weight:800;
    }
    .hero-side-title{
      font-size:1.08rem;
      line-height:1.35;
      margin:0;
    }
    .hero-side-desc{
      margin:0;
      color:var(--muted);
      font-size:.96rem;
    }
    .hero-side-list{
      display:grid;
      gap:10px;
      margin-top:2px;
    }
    .mini-row{
      display:flex;
      align-items:flex-start;
      gap:12px;
      padding:12px 12px;
      border-radius:16px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
    }
    .mini-icon{
      flex:0 0 auto;
      width:36px;height:36px;
      border-radius:12px;
      display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(124,92,255,.24), rgba(39,215,196,.18));
      color:#fff;
      font-weight:900;
    }
    .mini-row strong{display:block;font-size:.95rem;margin-bottom:2px}
    .mini-row span{display:block;color:var(--muted);font-size:.9rem}
    .section{
      padding:26px 0 8px;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:end;
      gap:18px;
      margin-bottom:18px;
    }
    .section-head h2{
      margin:0;
      font-size:clamp(1.45rem, 2vw, 2.1rem);
      line-height:1.2;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      max-width:54ch;
      font-size:.96rem;
    }
    .grid-3{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:var(--gap);
    }
    .grid-2{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:var(--gap);
    }
    .card{
      border-radius:var(--radius);
      background:linear-gradient(180deg, rgba(18,28,53,.86), rgba(10,18,34,.88));
      border:1px solid var(--line);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .card.hover{
      transition:var(--transition);
    }
    .card.hover:hover{
      transform:translateY(-4px);
      border-color:rgba(255,255,255,.16);
      box-shadow:0 24px 48px rgba(0,0,0,.34);
    }
    .feature{
      padding:18px;
      display:flex;
      flex-direction:column;
      gap:14px;
      min-height:100%;
    }
    .feature-top{
      display:flex;
      gap:14px;
      align-items:flex-start;
    }
    .feature-thumb{
      width:92px;height:120px;
      flex:0 0 auto;
      border-radius:18px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      position:relative;
      background:#172341;
    }
    .feature-thumb img{
      width:100%;
      height:100%;
      object-fit:cover;
    }
    .feature-content{
      min-width:0;
      flex:1;
    }
    .feature-content h3{
      margin:2px 0 8px;
      font-size:1.08rem;
      line-height:1.35;
    }
    .feature-content p{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
    }
    .list{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .list li{
      position:relative;
      padding-left:18px;
      color:#dce5ff;
      font-size:.94rem;
    }
    .list li:before{
      content:"";
      position:absolute;
      left:0;top:.7em;
      width:7px;height:7px;border-radius:999px;
      background:linear-gradient(135deg, var(--brand-2), var(--brand));
      box-shadow:0 0 0 5px rgba(39,215,196,.08);
    }
    .pill-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .pill{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      color:#e7edff;
      font-size:.88rem;
      transition:var(--transition);
    }
    .pill:hover{
      transform:translateY(-1px);
      background:rgba(255,255,255,.1);
      border-color:rgba(255,255,255,.14);
    }
    .pill strong{color:#fff}
    .showcase{
      padding:18px;
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:18px;
      align-items:center;
    }
    .showcase-media{
      position:relative;
      overflow:hidden;
      border-radius:22px;
      min-height:320px;
      background:#13203c;
      border:1px solid rgba(255,255,255,.08);
    }
    .showcase-media img{
      width:100%;
      height:100%;
      object-fit:cover;
    }
    .showcase-copy{
      padding:6px 6px 6px 2px;
    }
    .showcase-copy h3{
      margin:0 0 12px;
      font-size:1.5rem;
      line-height:1.25;
    }
    .showcase-copy p{
      margin:0 0 16px;
      color:var(--muted);
    }
    .panel{
      padding:18px;
    }
    .panel-title{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      margin-bottom:14px;
    }
    .panel-title h3{
      margin:0;
      font-size:1.1rem;
    }
    .panel-title span{
      color:var(--muted);
      font-size:.9rem;
    }
    .post-list{
      display:grid;
      gap:12px;
    }
    .post-item{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:14px;
      align-items:start;
      padding:15px;
      border-radius:18px;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.04);
      transition:var(--transition);
    }
    .post-item:hover{
      transform:translateY(-2px);
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.14);
    }
    .post-thumb{
      width:72px;height:72px;
      border-radius:16px;
      overflow:hidden;
      background:#16233f;
      border:1px solid rgba(255,255,255,.08);
      flex:0 0 auto;
    }
    .post-thumb img{
      width:100%;height:100%;object-fit:cover;
    }
    .post-main{min-width:0}
    .post-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:8px;
      color:var(--muted);
      font-size:.85rem;
    }
    .post-title{
      display:block;
      font-size:1.03rem;
      line-height:1.4;
      font-weight:800;
      margin-bottom:8px;
      color:#fff;
    }
    .post-excerpt{
      color:var(--muted);
      font-size:.92rem;
      margin:0;
    }
    .post-link{
      color:var(--brand-2);
      font-size:.92rem;
      font-weight:800;
      padding-top:4px;
      white-space:nowrap;
    }
    .post-link:hover{color:#97fff3}
    .empty-state{
      padding:24px 18px;
      border-radius:18px;
      border:1px dashed rgba(255,255,255,.18);
      color:var(--muted);
      text-align:center;
      background:rgba(255,255,255,.03);
    }
    .stats{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:12px;
    }
    .stat{
      padding:18px 16px;
      border-radius:20px;
      background:linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.08);
    }
    .stat strong{
      display:block;
      font-size:1.62rem;
      line-height:1.1;
      margin-bottom:6px;
    }
    .stat span{
      color:var(--muted);
      font-size:.92rem;
    }
    .faq-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:16px;
    }
    details.faq{
      padding:18px;
      border-radius:18px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      transition:var(--transition);
    }
    details.faq:hover{
      background:rgba(255,255,255,.05);
      border-color:rgba(255,255,255,.12);
    }
    details.faq[open]{box-shadow:var(--shadow-soft)}
    details.faq summary{
      list-style:none;
      cursor:pointer;
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:14px;
      font-weight:800;
      font-size:1rem;
      outline:none;
    }
    details.faq summary::-webkit-details-marker{display:none}
    .faq p{
      margin:12px 0 0;
      color:var(--muted);
      font-size:.94rem;
    }
    .faq-icon{
      flex:0 0 auto;
      width:24px;height:24px;
      border-radius:999px;
      display:grid;place-items:center;
      background:rgba(124,92,255,.18);
      color:#fff;
      font-size:1rem;
      transition:var(--transition);
    }
    details[open] .faq-icon{
      transform:rotate(45deg);
      background:rgba(39,215,196,.22);
    }
    .cta{
      padding:26px 0 10px;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      border:1px solid rgba(255,255,255,.1);
      background:
        linear-gradient(135deg, rgba(8,16,31,.9), rgba(18,28,53,.82)),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .cta-box:before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(90deg, rgba(8,16,31,.22), rgba(8,16,31,.82));
      pointer-events:none;
    }
    .cta-inner{
      position:relative;
      padding:28px;
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:22px;
      align-items:center;
    }
    .cta-copy h2{
      margin:0 0 12px;
      font-size:clamp(1.45rem, 2.5vw, 2.35rem);
      line-height:1.18;
    }
    .cta-copy p{
      margin:0;
      color:#d9e1f6;
      max-width:56ch;
    }
    .cta-note{
      margin-top:14px;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .form{
      padding:18px;
      border-radius:22px;
      background:rgba(9,16,31,.74);
      border:1px solid rgba(255,255,255,.09);
      backdrop-filter:blur(14px);
    }
    .field-row{
      display:grid;
      gap:12px;
    }
    .field{
      display:grid;
      gap:8px;
    }
    .field label{
      font-size:.9rem;
      color:#dbe5ff;
      font-weight:700;
    }
    .field input,
    .field textarea{
      width:100%;
      border-radius:16px;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.04);
      color:#fff;
      padding:13px 14px;
      outline:none;
      transition:var(--transition);
    }
    .field input::placeholder,
    .field textarea::placeholder{color:var(--muted-2)}
    .field input:focus,
    .field textarea:focus{
      border-color:rgba(39,215,196,.42);
      box-shadow:var(--focus);
      background:rgba(255,255,255,.06);
    }
    .field textarea{min-height:108px;resize:vertical}
    .form-actions{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:14px;
    }
    .form-hint{
      margin-top:10px;
      color:var(--muted);
      font-size:.86rem;
    }
    footer{
      margin-top:10px;
      padding:24px 0 30px;
      color:var(--muted);
    }
    .footer-box{
      padding:22px 0 0;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.3fr .7fr;
      gap:20px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .footer-brand p{
      margin:0;
      max-width:62ch;
      color:var(--muted);
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px 14px;
      justify-content:flex-end;
    }
    .footer-links a{
      color:#dbe5ff;
      padding:6px 0;
      border-bottom:1px solid transparent;
    }
    .footer-links a:hover{
      color:#fff;
      border-color:rgba(255,255,255,.24);
    }
    .copyright{
      margin-top:18px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.08);
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:space-between;
      font-size:.9rem;
      color:var(--muted-2);
    }
    .notice{
      margin-top:14px;
      padding:14px 16px;
      border-radius:16px;
      background:rgba(255,204,102,.08);
      border:1px solid rgba(255,204,102,.14);
      color:#f6e8bf;
      font-size:.92rem;
    }
    .icon-dot{
      width:10px;height:10px;border-radius:999px;background:var(--brand-2);box-shadow:0 0 0 5px rgba(39,215,196,.12);display:inline-block;
    }
    .anchor{scroll-margin-top:92px}
    .hero-aura{
      position:absolute;
      inset:auto -120px -120px auto;
      width:280px;height:280px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(124,92,255,.22), transparent 68%);
      pointer-events:none;
      filter:blur(5px);
    }
    .hero-aura.left{
      inset:-90px auto auto -100px;
      background:radial-gradient(circle, rgba(39,215,196,.16), transparent 66%);
    }
    @media (max-width: 1024px){
      .hero-grid,
      .cta-inner,
      .showcase{
        grid-template-columns:1fr;
      }
      .hero h1{max-width:100%}
      .grid-3,
      .grid-2,
      .stats{
        grid-template-columns:repeat(2,minmax(0,1fr));
      }
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width: 768px){
      .nav{
        position:relative;
        min-height:72px;
      }
      .menu-toggle{display:inline-flex}
      .nav-links{
        position:absolute;
        top:calc(100% + 12px);
        left:0;
        right:0;
        display:grid;
        gap:8px;
        padding:14px;
        border-radius:20px;
        background:rgba(8,16,31,.96);
        border:1px solid rgba(255,255,255,.10);
        box-shadow:var(--shadow);
        transform:translateY(-8px);
        opacity:0;
        pointer-events:none;
      }
      .nav-links.is-open{
        transform:translateY(0);
        opacity:1;
        pointer-events:auto;
      }
      .nav-links a{
        padding:12px 14px;
        border-radius:14px;
      }
      .hero-grid,
      .cta-inner{
        padding:22px;
      }
      .hero-metrics,
      .grid-3,
      .grid-2,
      .stats,
      .faq-grid{
        grid-template-columns:1fr;
      }
      .section-head{
        flex-direction:column;
        align-items:flex-start;
      }
      .post-item{
        grid-template-columns:auto 1fr;
      }
      .post-link{
        grid-column:2;
      }
      .showcase-media{min-height:260px}
    }
    @media (max-width: 520px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .brand-text span{display:none}
      .nav-cta .btn-secondary{display:none}
      .hero-shell{border-radius:24px}
      .hero-grid,
      .cta-inner{padding:18px}
      .hero h1{font-size:2rem}
      .hero p{font-size:.98rem}
      .card,
      .cta-box{border-radius:24px}
      .feature-top{
        flex-direction:column;
      }
      .feature-thumb{width:100%;height:190px}
      .post-item{
        grid-template-columns:1fr;
      }
      .post-thumb{
        width:100%;
        height:180px;
      }
      .post-link{
        grid-column:auto;
      }
    }

/* roulang page: article */
:root{
      --bg:#08101f;
      --bg-2:#0d1730;
      --panel:rgba(15,24,46,.78);
      --panel-2:rgba(10,18,34,.9);
      --line:rgba(255,255,255,.10);
      --line-2:rgba(255,255,255,.14);
      --text:#edf2ff;
      --muted:#9aa8c7;
      --muted-2:#7f8bb0;
      --brand:#7c5cff;
      --brand-2:#27d7c4;
      --brand-3:#ff7ab6;
      --warning:#ffcc66;
      --success:#5be38f;
      --shadow:0 18px 45px rgba(0,0,0,.35);
      --shadow-soft:0 10px 28px rgba(0,0,0,.22);
      --radius:22px;
      --radius-sm:14px;
      --radius-xs:10px;
      --container:1180px;
      --gap:24px;
      --gap-sm:16px;
      --transition:all .24s ease;
      --focus:0 0 0 3px rgba(39,215,196,.24),0 0 0 1px rgba(39,215,196,.45) inset;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Segoe UI,Roboto,Helvetica,Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(124,92,255,.22), transparent 26%),
        radial-gradient(circle at top right, rgba(39,215,196,.16), transparent 28%),
        linear-gradient(180deg, #07101f 0%, #08101f 42%, #0a1326 100%);
      line-height:1.7;
      overflow-x:hidden;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none;transition:var(--transition)}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    ::selection{background:rgba(39,215,196,.3);color:#fff}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .topbar{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:blur(20px);
      background:linear-gradient(180deg, rgba(6,12,24,.88), rgba(6,12,24,.62));
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .nav{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      min-height:78px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:14px;
      min-width:0;
    }
    .brand-mark{
      width:44px;height:44px;
      border-radius:14px;
      background:linear-gradient(135deg, rgba(124,92,255,1), rgba(39,215,196,1));
      box-shadow:0 12px 24px rgba(124,92,255,.22);
      position:relative;
      overflow:hidden;
      flex:0 0 auto;
    }
    .brand-mark:before,.brand-mark:after{
      content:"";
      position:absolute;
      inset:auto;
      border-radius:999px;
      background:rgba(255,255,255,.4);
    }
    .brand-mark:before{width:18px;height:18px;left:9px;top:11px;filter:blur(.2px)}
    .brand-mark:after{width:8px;height:8px;right:11px;bottom:11px;background:rgba(255,255,255,.65)}
    .brand-text{min-width:0}
    .brand-text strong{
      display:block;
      font-size:1.02rem;
      line-height:1.15;
      letter-spacing:.2px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-text span{
      display:block;
      color:var(--muted);
      font-size:.86rem;
      margin-top:2px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:14px;
      flex-wrap:wrap;
    }
    .nav-links a{
      position:relative;
      padding:10px 14px;
      border-radius:999px;
      color:var(--muted);
      font-weight:600;
      font-size:.95rem;
    }
    .nav-links a:hover,
    .nav-links a:focus{
      color:#fff;
      background:rgba(255,255,255,.06);
      outline:none;
    }
    .nav-links a.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(124,92,255,.2), rgba(39,215,196,.18));
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
    }
    .nav-cta{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:46px;
      padding:0 18px;
      border-radius:999px;
      font-weight:700;
      letter-spacing:.1px;
      transition:var(--transition);
      white-space:nowrap;
    }
    .btn:focus{outline:none;box-shadow:var(--focus)}
    .btn-primary{
      color:#07101f;
      background:linear-gradient(135deg, #7cf2e6, #fff08c);
      box-shadow:0 16px 32px rgba(39,215,196,.18);
    }
    .btn-primary:hover{transform:translateY(-1px);filter:saturate(1.08)}
    .btn-secondary{
      color:#fff;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.1);
    }
    .btn-secondary:hover{
      background:rgba(255,255,255,.11);
      border-color:rgba(255,255,255,.18);
      transform:translateY(-1px);
    }
    .menu-toggle{
      display:none;
      width:46px;height:46px;
      border-radius:14px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.1);
      color:#fff;
      align-items:center;
      justify-content:center;
      gap:4px;
      flex-direction:column;
    }
    .menu-toggle span{
      width:18px;height:2px;background:#fff;border-radius:999px;display:block;
    }
    .article-hero{
      padding:30px 0 20px;
    }
    .article-banner{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.1);
      border-radius:calc(var(--radius) + 8px);
      background:
        linear-gradient(135deg, rgba(6,11,23,.90), rgba(13,23,48,.76)),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
      box-shadow:var(--shadow);
      min-height:360px;
      display:flex;
      align-items:flex-end;
    }
    .article-banner:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 18% 20%, rgba(124,92,255,.26), transparent 24%),
        radial-gradient(circle at 80% 30%, rgba(39,215,196,.18), transparent 24%),
        linear-gradient(180deg, rgba(8,16,31,.08), rgba(8,16,31,.78));
      pointer-events:none;
    }
    .article-hero-content{
      position:relative;
      width:100%;
      padding:44px;
      max-width:920px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      color:#fff;
      border:1px solid rgba(255,255,255,.10);
      font-size:.88rem;
      font-weight:700;
      letter-spacing:.2px;
    }
    .eyebrow:before{
      content:"";
      width:8px;height:8px;
      border-radius:999px;
      background:var(--brand-2);
      box-shadow:0 0 0 5px rgba(39,215,196,.12);
    }
    h1{
      margin:18px 0 14px;
      font-size:clamp(2rem, 4vw, 4.1rem);
      line-height:1.12;
      font-weight:900;
      letter-spacing:-1px;
      max-width:900px;
      word-break:break-word;
    }
    .article-summary{
      margin:0;
      color:#c9d4ef;
      font-size:1.06rem;
      max-width:780px;
    }
    .meta-row{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .badge-soft,.meta-chip,.tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:34px;
      padding:6px 12px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.07);
      color:#dfe7ff;
      font-size:.9rem;
      font-weight:700;
    }
    .badge-soft strong{color:#fff}
    .tag{
      color:#9ff4ec;
      background:rgba(39,215,196,.09);
      border-color:rgba(39,215,196,.18);
    }
    main{padding:22px 0 64px}
    .page-grid{
      display:grid;
      grid-template-columns:minmax(0, 1fr) 330px;
      gap:28px;
      align-items:start;
    }
    .content-card,.side-card,.notice-card,.faq-card,.cta-panel{
      border:1px solid rgba(255,255,255,.10);
      background:linear-gradient(180deg, rgba(15,24,46,.82), rgba(10,18,34,.72));
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .content-card{padding:34px}
    .article-cover{
      margin:0 0 28px;
      overflow:hidden;
      border-radius:calc(var(--radius) - 4px);
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.04);
    }
    .article-cover img{
      width:100%;
      aspect-ratio:16/8;
      object-fit:cover;
      transition:transform .35s ease;
    }
    .article-cover:hover img{transform:scale(1.025)}
    .article-body{
      color:#d7def5;
      font-size:1.05rem;
    }
    .article-body :where(p,ul,ol,blockquote,figure,pre,table){margin-bottom:1.2em}
    .article-body h2{
      margin:1.55em 0 .65em;
      font-size:1.8rem;
      line-height:1.25;
      font-weight:900;
      color:#fff;
      letter-spacing:-.3px;
    }
    .article-body h3{
      margin:1.35em 0 .55em;
      font-size:1.35rem;
      font-weight:850;
      color:#fff;
    }
    .article-body p{color:#d7def5}
    .article-body a{
      color:#8ff4ea;
      border-bottom:1px solid rgba(143,244,234,.35);
    }
    .article-body a:hover{
      color:#fff08c;
      border-color:rgba(255,240,140,.55);
    }
    .article-body img{
      border-radius:var(--radius-sm);
      border:1px solid rgba(255,255,255,.10);
      margin:22px auto;
    }
    .article-body blockquote{
      padding:18px 20px;
      border-left:4px solid var(--brand-2);
      border-radius:0 var(--radius-sm) var(--radius-sm) 0;
      background:rgba(39,215,196,.08);
      color:#eef7ff;
    }
    .article-body ul,.article-body ol{padding-left:1.35em}
    .article-body li{margin:.45em 0}
    .article-body table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      overflow:hidden;
      border-radius:var(--radius-sm);
      border:1px solid rgba(255,255,255,.10);
    }
    .article-body th,.article-body td{
      padding:12px 14px;
      border-bottom:1px solid rgba(255,255,255,.08);
      color:#dbe4fb;
    }
    .article-body th{
      background:rgba(255,255,255,.07);
      color:#fff;
    }
    .article-empty{
      text-align:center;
      padding:48px 20px;
    }
    .article-empty h2{
      font-size:2rem;
      margin:0 0 12px;
      color:#fff;
    }
    .article-empty p{
      color:var(--muted);
      margin-bottom:24px;
    }
    .side-stack{
      display:grid;
      gap:18px;
      position:sticky;
      top:100px;
    }
    .side-card{padding:22px}
    .side-title{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      margin-bottom:14px;
    }
    .side-title h2,.side-title h3{
      margin:0;
      font-size:1.08rem;
      font-weight:900;
      color:#fff;
    }
    .side-title span{
      color:var(--muted-2);
      font-size:.88rem;
    }
    .info-list{
      display:grid;
      gap:12px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .info-list li{
      display:flex;
      justify-content:space-between;
      gap:12px;
      padding:12px 0;
      border-bottom:1px solid rgba(255,255,255,.08);
      color:var(--muted);
      font-size:.94rem;
    }
    .info-list li:last-child{border-bottom:0}
    .info-list strong{
      color:#fff;
      text-align:right;
      font-weight:800;
      word-break:break-word;
    }
    .mini-cover{
      border-radius:var(--radius-sm);
      overflow:hidden;
      border:1px solid rgba(255,255,255,.10);
      margin-bottom:16px;
    }
    .mini-cover img{
      width:100%;
      aspect-ratio:4/3;
      object-fit:cover;
      transition:var(--transition);
    }
    .side-card:hover .mini-cover img{transform:scale(1.03)}
    .check-list{
      display:grid;
      gap:11px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .check-list li{
      position:relative;
      padding-left:26px;
      color:#c8d3ee;
      font-size:.96rem;
    }
    .check-list li:before{
      content:"";
      position:absolute;
      left:0;
      top:.48em;
      width:12px;
      height:12px;
      border-radius:999px;
      background:linear-gradient(135deg, var(--brand-2), var(--warning));
      box-shadow:0 0 0 5px rgba(39,215,196,.08);
    }
    .section{
      margin-top:28px;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:18px;
    }
    .section-head h2{
      margin:0;
      font-size:clamp(1.45rem, 2.4vw, 2.1rem);
      line-height:1.25;
      font-weight:900;
      color:#fff;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      max-width:620px;
    }
    .notice-card{
      padding:26px;
      display:grid;
      grid-template-columns:1fr 1fr 1fr;
      gap:18px;
    }
    .notice-item{
      padding:18px;
      border-radius:var(--radius-sm);
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.08);
      transition:var(--transition);
    }
    .notice-item:hover{
      transform:translateY(-3px);
      background:rgba(255,255,255,.075);
      border-color:rgba(39,215,196,.18);
    }
    .notice-item b{
      display:block;
      font-size:1.02rem;
      color:#fff;
      margin-bottom:6px;
    }
    .notice-item p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }
    .faq-card{padding:8px}
    .faq-item{
      padding:20px;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .faq-item:last-child{border-bottom:0}
    .faq-item h3{
      margin:0 0 8px;
      font-size:1.05rem;
      color:#fff;
      font-weight:900;
    }
    .faq-item p{
      margin:0;
      color:var(--muted);
    }
    .cta-panel{
      position:relative;
      overflow:hidden;
      padding:30px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
      background:
        linear-gradient(135deg, rgba(124,92,255,.23), rgba(39,215,196,.12)),
        linear-gradient(180deg, rgba(15,24,46,.9), rgba(10,18,34,.78));
    }
    .cta-panel:before{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      right:-90px;
      top:-120px;
      border-radius:999px;
      background:rgba(39,215,196,.16);
      filter:blur(6px);
    }
    .cta-text{position:relative}
    .cta-text h2{
      margin:0 0 8px;
      font-size:1.8rem;
      font-weight:900;
      color:#fff;
    }
    .cta-text p{
      margin:0;
      color:#cbd6f1;
      max-width:720px;
    }
    .cta-actions{
      position:relative;
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      flex:0 0 auto;
    }
    footer{
      border-top:1px solid rgba(255,255,255,.08);
      background:rgba(5,10,20,.72);
      padding:42px 0 26px;
    }
    .footer-box{
      display:grid;
      gap:24px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1fr auto;
      gap:28px;
      align-items:start;
    }
    .footer-brand p{
      max-width:660px;
      margin:16px 0 0;
      color:var(--muted);
      font-size:.96rem;
    }
    .footer-links{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .footer-links a{
      padding:9px 12px;
      border-radius:999px;
      color:var(--muted);
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.07);
      font-weight:700;
      font-size:.92rem;
    }
    .footer-links a:hover{
      color:#fff;
      background:rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.14);
    }
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      padding-top:20px;
      border-top:1px solid rgba(255,255,255,.08);
      color:var(--muted-2);
      font-size:.9rem;
    }
    @media (max-width:1024px){
      .page-grid{grid-template-columns:1fr}
      .side-stack{position:static;grid-template-columns:1fr 1fr}
      .notice-card{grid-template-columns:1fr}
      .cta-panel{align-items:flex-start;flex-direction:column}
      .article-hero-content{padding:36px}
    }
    @media (max-width:768px){
      .nav{min-height:70px}
      .menu-toggle{display:flex}
      .nav-links{
        position:absolute;
        left:16px;
        right:16px;
        top:78px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:8px;
        padding:14px;
        border-radius:var(--radius-sm);
        background:rgba(8,16,31,.96);
        border:1px solid rgba(255,255,255,.12);
        box-shadow:var(--shadow);
      }
      .nav-links.is-open{display:flex}
      .nav-links a{width:100%;text-align:center}
      .nav-cta{display:none}
      .article-banner{min-height:330px}
      .article-hero-content{padding:28px}
      .content-card{padding:24px}
      .side-stack{grid-template-columns:1fr}
      .section-head{display:block}
      .section-head p{margin-top:8px}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:520px){
      .container{width:min(100% - 24px, var(--container))}
      .brand-text strong{font-size:.96rem;max-width:210px}
      .brand-text span{font-size:.78rem;max-width:210px}
      .article-hero{padding-top:18px}
      .article-banner{border-radius:20px;min-height:300px}
      .article-hero-content{padding:22px}
      h1{font-size:2rem;letter-spacing:-.5px}
      .article-summary{font-size:.98rem}
      .meta-row{gap:8px}
      .badge-soft,.meta-chip,.tag{font-size:.82rem}
      .content-card{padding:18px;border-radius:18px}
      .article-cover img{aspect-ratio:4/3}
      .article-body{font-size:1rem}
      .article-body h2{font-size:1.45rem}
      .cta-panel{padding:22px}
      .cta-text h2{font-size:1.45rem}
      .btn{width:100%}
      .cta-actions{width:100%}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}